CN114857339A

CN114857339A - Valve rod connecting piece with internal protection mechanism

Info

Publication number: CN114857339A
Application number: CN202210632651.7A
Authority: CN
Inventors: 沈荣华; 周小芳
Original assignee: Dongtai Huixincheng Metal Products Factory
Current assignee: Dongtai Huixincheng Metal Products Factory
Priority date: 2022-06-07
Filing date: 2022-06-07
Publication date: 2022-08-05

Abstract

The invention relates to the technical field of sealing devices, in particular to a valve rod connecting piece with an internal protection mechanism. According to the valve rod connecting piece with the internal protection mechanism, the bottom limiting frame on the upper surface of the circular bottom assembling disc is inserted into the lower end assembling slot to be fixedly connected with the lower end bolt of the longitudinal assembling pipe, the inner side assembling slot with the built-in detachable bottom rubber sealing sheet is formed in the lower end of the circular bottom assembling disc, so that the early-stage assembly and the later-stage replacement and maintenance are facilitated, and the later-stage use cost is greatly reduced; the elastic adjusting device used for controlling the extension and contraction of the bottom rubber sealing sheet is arranged in the longitudinal assembling pipe, so that a crumple zone with an elastic buffering function can be formed on a sealing surface as required, the water hammer effect inside the pipe and the valve can be eliminated when the valve is opened and closed, and the safety of the whole valve pipe is greatly improved.

Description

Valve rod connecting piece with internal protection mechanism

Technical Field

The invention relates to the technical field of sealing devices, in particular to a valve rod connecting piece with an internal protection mechanism.

Background

Valves are accessories for pipes used to open and close the pipe, control flow direction, regulate and control parameters of the transport medium. According to their function, they can be classified into shut-off valves, check valves, regulating valves, and the like. The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like. Valves used in fluid control systems range in variety and size from the simplest shut-off valves to the variety of valves used in extremely complex autonomous systems.

The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The valves are divided into cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum vanadium steel valves, dual-phase steel valves, plastic valves, nonstandard valves and the like according to the materials.

The valve rod seat of honour is the main adapting unit in the valve, mainly comprises the axis of ordinates that is used for connecting the handle and the base that is used for fixed valve, and traditional valve rod seat of honour simple structure is fixed, and unable regulation leads to the structure and the specification of using the valve limited, and compressive strength is fixed, poor stability, the water hammer effect that the valve received when opening and close can't be dealt with to, and loading and unloading are inconvenient, lead to installation in earlier stage and later stage to dismantle the maintenance trouble, in case the problem can only the whole change, later stage use cost is high.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to solve the problem that exists among the above-mentioned background art, a modified valve rod connecting piece that has inside protection machanism is provided, it is fixed to solve traditional valve rod seat of honour simple structure, can't adjust, the structure and the specification that lead to using the valve are limited, compressive strength is fixed, poor stability, the water hammer effect that the valve received when opening and close can't be dealt with, loading and unloading are inconvenient, lead to installation in earlier stage and later stage to dismantle the maintenance trouble, in case the problem can only the whole change, problem that later stage use cost is high.

The technical scheme adopted by the invention for solving the technical problems is as follows: a valve rod connecting piece with an internal protection mechanism comprises a circular bottom assembly disc and a longitudinal assembly pipe, wherein the lower end of the circular bottom assembly disc is provided with a circular bottom accommodating groove, the central position inside the circular bottom accommodating groove is provided with a circular truncated cone-shaped structure adjusting opening, the inner side arc surface inside the circular bottom accommodating groove is provided with an inner side assembly groove, the side wall of the inner side assembly groove is provided with an inner side limiting groove, the inner side assembly groove is internally provided with a bottom rubber sealing sheet, the outer edge position of the bottom rubber sealing sheet is provided with an integral structure edge covering sleeve, the bottom rubber sealing sheet is inserted into the inner side limiting groove through the outer edge covering sleeve and is connected with the circular bottom assembly disc, the upper surface of the circular bottom assembly disc is positioned at the periphery of the circular truncated cone-shaped structure adjusting opening and is provided with an upward convex integral structure bottom limiting frame, the lower end of the outer side surface of the longitudinal assembly pipe is provided with a lower end assembly slot matched with the bottom limiting frame, lateral assembling screw holes with built-in fastening bolts are transversely formed in the outer side surface of the bottom limiting frame, and an elastic adjusting device is installed in the longitudinal assembling pipe.

The center of the inner side surface of the bottom rubber sealing sheet is fixedly provided with a metal sealing elastic sheet, and the upper surface of the metal sealing elastic sheet is fixedly connected with an internal sealing cover connected with an elastic adjusting device.

The size of the inner aperture of the adjusting port and the size of the outer diameter of the inner sealing cover are gradually increased from top to bottom by the round table-shaped structure.

The elasticity adjusting device comprises an inner control shaft arranged in the longitudinal assembly pipe, a bottom limiting frame axially fixed at the lower end of the inner control shaft, a buffer spring arranged on the inner side of the bottom limiting frame, an outer control frame axially fixed at the upper end of the inner control shaft and a lateral control block fixed on the outer lateral wall of the outer control frame, wherein lateral adjusting ports matched with the lateral control block are symmetrically formed in the outer lateral surface of the longitudinal assembly pipe.

The inner sealing cover upper surface provided with a circular assembly clamping groove, the lower end of the buffer spring is clamped and fixed with the inner sealing cover upper surface by inserting into the circular assembly clamping groove.

The lower surface of the round bottom assembly disc is provided with a bottom assembly screw hole communicated with the inner side limiting groove, the edge covering sleeve is positioned at the bottom assembly screw hole and is provided with a lateral loading and unloading notch, and a hard limiting strip is inserted into the edge covering sleeve through the lateral loading and unloading notch.

And a limit screw is inserted into the bottom assembly screw hole through threads.

The upper end of the inner side surface of the longitudinal assembly pipe is provided with an integrated structure assembly limiting ring, and the outer side surface of the longitudinal assembly pipe is positioned above the assembly limiting ring and is provided with a lateral mounting hole internally provided with a lateral mounting bolt.

The invention has the beneficial effects that:

(1) according to the valve rod connecting piece with the internal protection mechanism, the bottom limiting frame on the upper surface of the circular bottom assembling disc is inserted into the lower end assembling slot and fixedly connected with the lower end bolt of the longitudinal assembling pipe, the inner side assembling slot with the built-in detachable bottom rubber sealing sheet is formed in the lower end of the circular bottom assembling disc, the whole device is in split type layout, so that the valve rod connecting piece is convenient to assemble and disassemble, is convenient to assemble in the early stage and replace and maintain in the later stage, and the later-stage use cost is greatly reduced;

(2) an elastic adjusting device for controlling the extension and contraction of the bottom rubber sealing sheet is arranged in the longitudinal assembling pipe, so that a crumple zone with an elastic buffering function can be formed on a sealing surface according to needs, and the water hammer effect in the pipeline and the valve can be eliminated when the valve is opened and closed, so that the safety of the whole valve pipeline is greatly improved;

(3) adopt the spacing cover of borduring of stereoplasm to insert to make bottom rubber gasket installation spacing in the limiting groove inside, utilize bottom rubber gasket and buffer spring's elasticity to cooperate, it is more various to make its deformation direction that produces after receiving the impact, it is more extensive to receive the face of strikeing, the buffering effect is better, utilize the side direction control block on the outside control frame lateral wall to adjust along the side direction regulation mouth, thereby can switch between elastic buffer and rigid seal structure fast, the operation is very simple and convenient.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is an internal schematic view of the present invention.

Fig. 3 is a partial sectional view of a portion of fig. 2 at a position a.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

FIG. 1, FIG. 2 and FIG. 3 show a valve rod connecting piece with an internal protection mechanism, which comprises a circular bottom assembly tray 1 and a longitudinal assembly pipe 2, wherein the lower end of the circular bottom assembly tray 1 is provided with a circular bottom accommodating groove 3, the center position inside the circular bottom accommodating groove 3 is provided with a circular platform-shaped structure adjusting opening 4, the inner arc surface inside the circular bottom accommodating groove 3 is provided with an inner assembly groove 5, the side wall of the inner assembly groove 5 is provided with an inner limiting groove 6, the inner assembly groove 5 is internally provided with a bottom rubber sealing sheet 7, the outer edge position of the bottom rubber sealing sheet 7 is provided with an integral structure edge covering sleeve 8, the bottom rubber sealing sheet 7 is inserted into the inner limiting groove 6 through the outer edge covering sleeve 8 and is connected with the circular bottom assembly tray 1, the upper surface of the circular bottom assembly tray 1 is provided with an integral structure bottom limiting frame 9 protruding upwards at the periphery of the circular platform-shaped structure adjusting opening 4, the lower end of the outer side surface of the longitudinal assembling pipe 2 is provided with a lower end assembling slot 10 matched with the bottom limiting frame 9, the outer side surface of the bottom limiting frame 9 is transversely provided with a lateral assembling screw hole internally provided with a fastening bolt 11, and an elastic adjusting device is arranged inside the longitudinal assembling pipe 2.

Further, for convenient extrusion control and top seal, promote the durability, bottom rubber gasket 7 medial surface central point puts fixed assembly with metal seal shell fragment 12, and fixed surface is connected with the sealed lid 13 of inside that is connected with the elasticity adjusting device on the metal seal shell fragment 12, and further, for convenient processing production and promotion leakproofness, the interior aperture size of round platform shape structure regulation mouth 4 and the sealed 13 outside diameters size of lid of inside down grow gradually from last.

Further, in order to facilitate outer side adjustment and elastic extrusion, the elastic adjustment device comprises an inner control shaft 14 mounted inside the longitudinal assembly pipe 2, a bottom limiting frame 15 axially fixed at the lower end of the inner control shaft 14, a buffer spring 16 mounted inside the bottom limiting frame 15, an outer control frame 17 axially fixed at the upper end of the inner control shaft 14, and a lateral control block 18 fixed on the outer lateral wall of the outer control frame 17, wherein lateral adjustment ports 19 matched with the lateral control block 18 are symmetrically formed on the outer lateral surface of the longitudinal assembly pipe 2. The partial shape structure of the lateral adjustment opening 19 is shown in fig. 1.

Further, for the cooperation bottom installation is fixed, circular assembly slot 20 has been seted up to inside sealed lid 13 upper surface, 16 lower extremes of buffer spring are fixed through inserting inside and the 13 upper surface joint of inside sealed lid of circular assembly slot 20, furthermore, for the convenience from outside loading and unloading, conveniently change and install flexible sealing buffer gear, bottom assembly screw 21 that is linked together with inboard spacing groove 6 inside is seted up to 1 lower surface of circular bottom assembly dish, it has seted up side direction loading and unloading opening 22 to bordure cover 8 is located bottom assembly screw 21 position, 8 insidely of bordure cover are pegged graft through side direction loading and unloading opening 22 and are had stereoplasm spacing 23. The top surface is located bottom assembly screw 21 inboard in inboard spacing groove 6 and is fixed with the lug that both sides have the arc spigot surface, makes things convenient for spacing 23 of stereoplasm to insert and derive, the convenient change.

Further, for the cooperation is inside spacing, promotes locking performance that takes off, and the internal thread of bottom assembly screw 21 is pegged graft and is had stop screw 24, and further, for convenient top assembly is fixed, and 2 medial surface upper ends of vertical assembly pipe have an organic whole structure assembly spacing ring 25, and 2 lateral surfaces of vertical assembly pipe lie in and assemble the side direction mounting hole that 25 top seted up built-in side direction mounting bolt 26.

Example (b): when the flexible buffering state is changed, people translate and turn back the lateral control block 18 from the top of the lateral adjusting opening 19 to the bottom, at this time, the internal control shaft 14 drives the internal sealing cover 13 and the metal sealing elastic sheet 12 to extrude downwards through the buffer spring 16 at the bottom, at this time, the middle part of the bottom rubber sealing sheet 7 is propped up and deformed, meanwhile, the adjusting opening 4 with the circular truncated cone-shaped structure is opened, and at this time, the opening between the inner side assembling groove 5 and the inner side limiting groove 6 is closed through the edge covering sleeve 8;

when the state is changed into a hard state, people translate and turn back the lateral control block 18 to the top from the bottom of the lateral adjusting opening 19, at this time, the internal control shaft 14 drives the internal sealing cover 13 and the metal sealing elastic sheet 12 to retract upwards through the buffer spring 16 at the bottom, at this time, the middle part of the bottom rubber sealing sheet 7 retracts and is flat, meanwhile, the adjusting opening 4 with the circular truncated cone structure is closed, at this time, the edge covering sleeve 8 resets outwards, and the outer arc face of the inner side assembling groove 5 is closed.

According to the valve rod connecting piece with the internal protection mechanism, the bottom limiting frame 9 on the upper surface of the circular bottom assembling disc 1 is inserted into the lower end assembling slot 10 to be fixedly connected with the lower end bolt of the longitudinal assembling pipe 2, the inner side assembling slot 5 with the built-in detachable bottom rubber sealing sheet 7 is formed in the lower end of the circular bottom assembling disc 1, and the whole device is in split layout, so that the valve rod connecting piece is convenient to assemble and disassemble, convenient to replace and maintain in the early stage and greatly reduced in the later stage; an elastic adjusting device for controlling the extension and contraction of the bottom rubber sealing sheet 7 is arranged in the longitudinal assembly pipe 2, so that a crumple zone with an elastic buffering function can be formed on a sealing surface according to needs, and the water hammer effect in the pipeline and the valve can be eliminated when the valve is opened and closed, so that the safety of the whole valve pipeline is greatly improved; adopt stereoplasm spacing strip 23 to insert and bordure cover 8 and make bottom rubber gasket 7 installation spacing in the inboard spacing groove 6 insidely, utilize bottom rubber gasket 7 and buffer spring 16's elasticity to cooperate, it is more various to make its deformation direction that produces after receiving the impact, it is more extensive to receive the face of strikeing, the cushioning effect is better, utilize side direction control block 18 on the 17 lateral walls of outside control frame to adjust along side direction regulation mouth 19, thereby can switch between elastic buffer and rigid seal structure fast, it is very simple and convenient to operate.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A valve stem connector with internal protection mechanism comprising a circular bottom assembly disc (1) and a longitudinal assembly tube (2), characterized in that: the lower end of the circular bottom assembly disc (1) is provided with a circular bottom accommodating groove (3), the inner center position of the circular bottom accommodating groove (3) is provided with a circular truncated cone-shaped structure adjusting opening (4), the inner side arc surface of the circular bottom accommodating groove (3) is provided with an inner side assembly groove (5), the side wall of the inner side assembly groove (5) is provided with an inner side limiting groove (6), the inner side assembly groove (5) is internally provided with a bottom rubber sealing sheet (7), the outer edge position of the bottom rubber sealing sheet (7) is provided with an integral structure edge covering sleeve (8), the upper surface of the circular bottom assembly disc (1) is positioned at the periphery of the circular truncated cone-shaped structure adjusting opening (4) and is provided with an upward convex integral structure bottom limiting frame (9), the lower end of the outer side surface of the longitudinal assembly pipe (2) is provided with a lower end assembly slot (10) matched with the bottom limiting frame (9), lateral assembling screw holes with built-in fastening bolts (11) are transversely formed in the outer side face of the bottom limiting frame (9), and an elastic adjusting device is installed inside the longitudinal assembling pipe (2).

2. The valve stem connector of claim 1 having an internal shielding mechanism, wherein: the bottom rubber sealing piece (7) is characterized in that a metal sealing elastic piece (12) is fixedly assembled at the center of the inner side face of the bottom rubber sealing piece, and an inner sealing cover (13) connected with an elastic adjusting device is fixedly connected to the upper surface of the metal sealing elastic piece (12).

3. A valve stem connector with internal shielding mechanism as defined in claim 2, wherein: the inner aperture size of the adjusting opening (4) with the circular truncated cone-shaped structure and the outer diameter size of the inner sealing cover (13) are gradually increased from top to bottom.

4. A valve stem connector with internal shielding mechanism as defined in claim 2, wherein: the elasticity adjusting device comprises an internal control shaft (14) arranged inside a longitudinal assembly pipe (2), a bottom limiting frame (15) axially fixed at the lower end of the internal control shaft (14), a buffer spring (16) arranged on the inner side of the bottom limiting frame (15), an outer side control frame (17) axially fixed at the upper end of the internal control shaft (14) and a lateral control block (18) fixed on the outer side wall of the outer side control frame (17), wherein lateral adjusting ports (19) matched with the lateral control block (18) are symmetrically formed in the outer side surface of the longitudinal assembly pipe (2).

5. The valve stem connector of claim 4 having an internal shielding mechanism, wherein: the upper surface of the inner sealing cover (13) is provided with a circular assembling clamping groove (20), and the lower end of the buffer spring (16) is fixedly clamped with the upper surface of the inner sealing cover (13) by being inserted into the circular assembling clamping groove (20).

6. The valve stem connector of claim 1 having an internal shielding mechanism, wherein: the lower surface of the round bottom assembly disc (1) is provided with a bottom assembly screw hole (21) communicated with the inside of the inner side limiting groove (6), the position of the edge covering sleeve (8) on the bottom assembly screw hole (21) is provided with a lateral assembly and disassembly opening (22), and the inside of the edge covering sleeve (8) is spliced with a hard limiting strip (23) through the lateral assembly and disassembly opening (22).

7. The valve stem connector of claim 6 wherein said internal guard mechanism comprises: and a limit screw (24) is inserted into the bottom assembly screw hole (21) through threads.

8. The valve stem connector of claim 1 having an internal shielding mechanism, wherein: the upper end of the inner side surface of the longitudinal assembling pipe (2) is provided with an integrated structure assembling limiting ring (25), and the outer side surface of the longitudinal assembling pipe (2) is positioned above the assembling limiting ring (25) and is provided with a lateral installing hole internally provided with a lateral installing bolt (26).