CN218761489U

CN218761489U - Integrated valve rod

Info

Publication number: CN218761489U
Application number: CN202223340623.2U
Authority: CN
Inventors: 岑攀益; 章聪; 胡晓军; 孙凯; 但先勇; 彭琼
Original assignee: Ningbo Friendship Bronze Ware Co ltd
Current assignee: Ningbo Friendship Bronze Ware Co ltd
Priority date: 2022-12-10
Filing date: 2022-12-10
Publication date: 2023-03-28
Anticipated expiration: 2032-12-10

Abstract

An integral valve stem comprising: a stainless steel shaft; a sealing plastic cover sleeved on the stainless steel shaft lever; the copper alloy end covers are at least provided with 2 copper alloy end covers and are respectively arranged at two ends of the sealing plastic sleeve; the clamp spring is sleeved on the stainless steel shaft rod and presses the copper alloy end cover against the sealing plastic sleeve; sealed plastic cover forms an organic whole through mould internal injection molding process and stainless steel axostylus axostyle, and sets up flutedly on the stainless steel axostylus axostyle, and sealed plastic cover is at least partly embedded into in the recess. The utility model discloses place the stainless steel axostylus axostyle in the die cavity of mould during production, the sealed plastic cover of shaping play in the rethread in-mould injection technology on the stainless steel axostylus axostyle, the product after the shaping can form good fine and close cooperation to this valve rod ensures in the use that sealed plastic cover can not take place to leak between the stainless steel axostylus axostyle. Meanwhile, the stainless steel shaft lever and the sealing plastic sleeve form a whole, so that the strength is higher, and the use is more stable and reliable.

Description

Integrated valve rod

Technical Field

The utility model belongs to the technical field of the technique of valve accessories and specifically relates to integral type valve rod.

Background

Valves are plumbing accessories used to open and close a pipe, control flow direction, regulate and control parameters of the transport medium (temperature, pressure and flow). 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 pipeline fluid conveying system, is used for changing the passage section and the medium flowing direction, and has the functions of diversion, cutoff, throttling, check, shunting or overflowing pressure relief and the like. Valves used for fluid control range from the simplest shut-off valves to the various valves used in extremely complex autonomous systems, ranging in variety and specification from the very tiny instrument valves up to industrial pipeline valves with nominal diameters of up to 10 m. The valve can be used for controlling various types of fluid such as water, steam, oil products, gas, slurry, various corrosive media, liquid metal, radioactive fluid and the like to flow, the working pressure of the valve can be ultrahigh pressure from 0.0013MPa to 1000MPa, and the working temperature can be ultralow at-270 ℃ to high at 1430 ℃.

The valve can be used for controlling the flow of various types of fluid such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The valves are further classified into cast iron valves, cast steel valves, stainless steel valves (201, 304, 316, etc.), chrome molybdenum steel valves, chrome molybdenum vanadium steel valves, dual-phase steel valves, plastic valves, nonstandard valves, etc. according to the material.

The valve can be controlled by adopting various transmission modes, such as manual, electric, hydraulic, pneumatic, turbine, electromagnetic hydraulic, electrohydraulic, pneumatic hydraulic, spur gear, bevel gear drive and the like; the valve can be operated according to a preset requirement under the action of pressure, temperature or other forms of sensing signals, or can be opened or closed simply without depending on the sensing signals, and the valve can make the opening and closing piece do lifting, sliding, swinging or rotating motion by depending on a driving or automatic mechanism, so that the size of the flow passage area of the valve is changed to realize the control function of the valve.

The valve rod is an important part of the valve and is used for transmission, an actuating mechanism or a handle is connected to the valve rod, and the valve rod directly drives the valve core to move or rotate below the actuating mechanism or the handle so as to realize the opening and closing or adjusting function of the valve. The valve rod is not only a moving part and a stress part but also a sealing part in the opening and closing process of the valve. At the same time, it is impacted and corroded by the media and also rubs against the filler. Therefore, when selecting a valve stem material, it is necessary to ensure sufficient strength, good impact toughness, galling resistance, and corrosion resistance at a prescribed temperature. The valve rod is a quick-wear part, and the mechanical processing performance and the heat treatment performance of the material are also required to be paid attention to when the valve rod is selected.

As patent document CN205859179U, a novel accurate copper tin-plating stop valve is disclosed, including the copper valve body, the disk seat of setting in this valve body, the setting is at the valve gap of valve body upper end, and set up the valve rod in the valve gap, the valve rod lower extreme stretches into the valve body and is connected with the valve clack, this valve clack receives the valve rod drive and cooperates the disk seat to switch on and off this stop valve, the upper end of valve rod is equipped with an adjusting screw, the cover is equipped with adjustment handle on the adjusting screw, adjustment handle drives the valve rod and carries out elevating movement, be equipped with the cushion between adjusting hand wheel's the upper end and adjusting screw's the pin fin, the draw-in groove has been seted up on the upper portion of valve rod, the upper end of valve gap is equipped with a split pin, and this split pin can insert in the draw-in groove, the surface of valve body still plates and is equipped with the tin layer.

Disclosure of Invention

In order to overcome the above-mentioned not enough of prior art, the utility model provides an integral type valve rod.

The technical proposal of the utility model for solving the technical problem is that: an integrated valve stem comprising: a stainless steel shaft lever; the sealing plastic sleeve is sleeved on the stainless steel shaft rod; the copper alloy end covers are at least provided with 2 copper alloy end covers which are respectively arranged at two ends of the sealing plastic sleeve; the clamp spring is sleeved on the stainless steel shaft rod and presses the copper alloy end cover against the sealing plastic sleeve;

the sealing plastic sleeve is integrated with the stainless steel shaft rod through an in-mold injection molding process, a groove is formed in the stainless steel shaft rod, and at least part of the sealing plastic sleeve is embedded into the groove.

The technical scheme is further provided that the grooves comprise 2 groups, wherein one group of the grooves are continuous annular grooves, and the other group of the grooves are annular dotted grooves.

In some embodiments of the present invention, the two ends of the sealing plastic sleeve extend outward to form a ring-shaped annular wall, the annular wall is formed with a first accommodating cavity therein, the copper alloy end cap is installed at least in the first accommodating cavity, and the outer wall of the copper alloy end cap is offset from the annular wall.

In some embodiments of the present invention, the positioning groove is disposed at the bottom of the first accommodating chamber, the inner side of the copper alloy end cover is provided with a first protrusion, and the first protrusion is clamped into the positioning groove.

In some embodiments of the present invention, the fastening groove has been further opened on the stainless steel shaft rod, a part of the snap spring is clamped into the fastening groove, and the other part of the snap spring extends out of the fastening groove and is limited by the copper alloy end cover.

In some embodiments of the present invention, the outside of the copper alloy end cover is provided with a second protrusion, the second protrusion is annular and surrounds a second accommodating cavity, and the clamp spring is disposed in the second accommodating cavity.

In some embodiments of the present invention, the inner end of the stainless steel shaft is provided with a ball assembly.

According to the technical scheme, the inner end of the stainless steel shaft rod is provided with the semicircular groove, the ball assembly comprises a ball body and a limiting pressing sleeve, the ball body is embedded into the semicircular groove, and the limiting pressing sleeve is combined with the inner end of the stainless steel shaft rod and integrated with the inner end of the stainless steel shaft rod, so that at least part of the ball body is exposed out of the semicircular groove.

The technical scheme is further that a plurality of micro balls are further arranged in the semicircular groove, and the ball body is abutted to the micro balls.

The technical scheme is further characterized in that a limiting step is arranged in the semicircular groove;

the outer side of the semicircular groove, which is opposite to the limiting step, is provided with an internal thread, the limiting pressing sleeve is provided with an external thread, and the internal thread is connected with the external thread so that the limiting pressing sleeve is connected with the stainless steel shaft rod;

the inner side of the semicircular groove relative to the limiting step is provided with a smooth inner surface.

The beneficial effects of the utility model reside in that:

1. during production, the stainless steel shaft rod is placed in a cavity of the mold, the sealing plastic sleeve is formed on the stainless steel shaft rod through an in-mold injection process, and a formed product can form good compact fit, so that the valve rod ensures that no leakage occurs between the sealing plastic sleeve and the stainless steel shaft rod in the using process.

2. The stainless steel shaft lever and the sealing plastic sleeve are integrated, so that the strength is higher, and the use is more stable and reliable.

3. During the use, the week side of sealed plastic cover can form effectual sealed cooperation with the chamber wall butt of valve body.

4. Through the setting of recess to make sealing plastic cover at least part shaping in the recess, make joint strength higher.

5. The jump ring compresses tightly the copper alloy end cover at sealed plastic cover both ends to prevent that sealed plastic cover from receiving extrusion displacement transition and leading to breaking away from the condition emergence of stainless steel axostylus axostyle.

Drawings

FIG. 1 is an assembly view of the first embodiment.

Fig. 2 is an exploded view of the first embodiment.

FIG. 3 is a sectional view of the first embodiment.

FIG. 4 is a sectional view of the second embodiment.

Fig. 5 is an enlarged schematic view of a portion a in fig. 4.

Fig. 6 is a schematic structural view of the middle sealing plastic sleeve of the present invention.

In the figure: 1. a stainless steel shaft lever; 1a, a fastening groove; 2. sealing the plastic sleeve; 2a, sealing at least part of the plastic sleeve; 3. a copper alloy end cap; 3a, a first boss; 3b, a second boss; 4. a clamp spring; 4a, a part of a clamp spring; 4b, the other part; 5. a groove; 5a, an annular groove; 5b, annular dot-shaped grooves; 6. an annular wall; 7. a first accommodating cavity; 8. positioning a groove; 11. a second accommodating cavity; 12. a semicircular groove; 12a, a limiting step; 12b, internal threads; 13. a ball body; 14. limiting and pressing sleeves; 14a, external threads; 15. and (4) micro balls.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments are only specific illustrations of the present invention, and the purpose thereof is to make the technical solution of the present invention better understood by those skilled in the art, and should not be considered as limitations of the present invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., appear based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

Referring to fig. 1 to 3 and 6, the integrated valve stem includes: a stainless steel shaft rod 1; a sealing plastic cover 2 which is sleeved on the stainless steel shaft lever 1; the copper alloy end covers 3 are at least provided with 2 and are respectively arranged at two ends of the sealing plastic sleeve 2; the clamp spring 4 is sleeved on the stainless steel shaft lever 1 and presses the copper alloy end cover 3 against the sealing plastic sleeve 2;

the sealing plastic sleeve 2 is integrated with the stainless steel shaft rod 1 through an in-mold injection molding process, a groove 5 is formed in the stainless steel shaft rod 1, and at least part 2a of the sealing plastic sleeve is embedded into the groove 5.

The above content is the basic scheme of the utility model, compared with the prior art the characteristics lie in at least: 1. during production, the stainless steel shaft rod 1 is placed in a cavity of a mold, the sealing plastic sleeve 2 is formed on the stainless steel shaft rod 1 through an in-mold injection molding process, and a formed product can form good compact fit, so that the valve rod can ensure that no leakage occurs between the sealing plastic sleeve 2 and the stainless steel shaft rod 1 in the using process; 2. the stainless steel shaft lever 1 and the sealing plastic sleeve 2 are integrated, so that the strength is higher, and the use is more stable and reliable; 3. when in use, the peripheral side of the sealing plastic sleeve 2 can be abutted against the cavity wall of the valve body to form effective sealing fit; 4. through the arrangement of the groove 5, the sealing plastic sleeve 2 is at least partially molded in the groove 5, so that the connection strength is higher; 5. the jump ring 4 compresses tightly copper alloy end cover 3 at sealed plastic cover 2 both ends to prevent that sealed plastic cover 2 from receiving the condition emergence that extrusion displacement transition and lead to breaking away from stainless steel axostylus axostyle 1.

In relation to the above technical solution, there are 2 sets of the grooves 5, wherein one set of the grooves 5 is a continuous annular groove 5a, and the other set of the grooves 5 is an annular dotted groove 5b. Because the pressure on the inner end of the stainless steel shaft rod 1 is larger in the using process, and a larger connecting contact area is needed to enhance the connecting strength, the annular groove 5a is arranged close to the inner end of the stainless steel shaft rod 1; similarly, the pressure experienced at the outer end is relatively low, placing the annular point-shaped groove 5b near the outer end of the stainless steel shaft 1.

The preferable connection mode between the sealing plastic sleeve 2 and the copper alloy end cover 3 is as follows: the two ends of the sealing plastic sleeve 2 extend outwards to form a ring of annular wall 6, a first accommodating cavity 7 is formed in the annular wall 6, the copper alloy end cover 3 is at least installed in the first accommodating cavity 7, and the outer wall of the copper alloy end cover 3 is abutted to the annular wall 6. More specifically, a positioning groove 8 is formed in the bottom of the first accommodating cavity 7, a first protruding portion 3a is arranged on the inner side of the copper alloy end cover 3, and the first protruding portion 3a is clamped into the positioning groove 8. Under this mounting means, sealed plastic cover 2 provides the space of looks adaptation for the installation of copper alloy end cover 3, can not occupy unnecessary space, and both joints are very laminating, inseparable, firm.

In order to firmly press the copper alloy end cover 3 against the sealing plastic sleeve 2, a fastening groove 1a is further formed in the stainless steel shaft rod 1, one part 4a of the snap spring is clamped into the fastening groove 1a, and the other part 4b of the snap spring extends out of the fastening groove 1a and is abutted and limited with the copper alloy end cover 3. The outer side of the copper alloy end cover 3 is provided with a second protruding portion 3b, the second protruding portion 3b is annular and surrounds a second accommodating cavity 11, and the clamp spring 4 is arranged in the second accommodating cavity 11.

Example two

The inner end of the conventional shaft rod is planar, so that high installation accuracy is required in the installation process, the shaft rod cannot be normally installed in place once deviation exists, and the shaft rod is too direct in contact with the valve body, so that the shaft rod can be distorted and deformed and even damaged and broken.

In order to solve the defects of the prior art, referring to fig. 4 to 5, the present embodiment provides a solution that the inner end of the stainless steel shaft rod 1 is provided with a ball assembly. Specifically, the inner end of the stainless steel shaft rod 1 is provided with a semicircular groove 12, the ball assembly comprises a ball body 13 and a limiting pressing sleeve 14, after the ball body 13 is embedded into the semicircular groove 12, the limiting pressing sleeve 14 is combined with the inner end of the stainless steel shaft rod 1 to form a whole, so that at least part of the ball body 13 is exposed out of the semicircular groove 12. The connection between the limiting pressure sleeve 14 and the stainless steel shaft rod 1 may preferably be a snap connection, a magnetic connection, or the like, and is not limited herein. The arrangement of the limiting pressing sleeve 14 facilitates the installation and the disassembly and the replacement of the ball body 13, and the stainless steel shaft lever 1 is in a stable state when being jointed, so that the ball body 13 can rotate and do not rotate relatively when being contacted with a valve body, and the quick positioning, the installation and the use are convenient.

In the above technical solution, a plurality of micro balls 15 are further disposed in the semi-circular groove 12, and the ball body 13 is in contact with the micro balls 15. Through the setting of miniature ball 15 for ball body 13 forms indirect cooperation through miniature ball 15 and stainless steel axostylus axostyle 1, and then when the assembly, can effectively dump the contact pressure between stainless steel axostylus axostyle 1 and the valve body, with miniature ball 15 evenly to conducting everywhere, and then ensure that stainless steel axostylus axostyle 1 can not warp impaired.

The preferable joint structure of the limiting pressure sleeve 14 and the stainless steel shaft rod 1 is as follows: a limiting step 12a is arranged in the semicircular groove 12; the semicircular groove 12 is provided with an internal thread 12b on the outer side relative to the limit step 12a, the limit pressing sleeve 14 is provided with an external thread 14a, and the internal thread 12b is engaged with the external thread 14a so that the limit pressing sleeve 14 is connected with the stainless steel shaft rod 1. In addition, the inner side of the semicircular groove 12 relative to the limit step 12a has a smooth inner surface to eliminate friction, so that the micro ball 15 can roll more smoothly, and the service life of related parts is greatly prolonged.

The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to utility model technical entity to any simple modification, change and the equivalent structure change of doing above embodiment, all still belong to the utility model discloses technical scheme's within the scope of protection.

Claims

1. An integrated valve stem comprising: a stainless steel shaft (1); the sealing plastic sleeve (2) is sleeved on the stainless steel shaft lever (1); the copper alloy end covers (3) are at least provided with 2 and are respectively arranged at two ends of the sealing plastic sleeve (2); the clamp spring (4) is sleeved on the stainless steel shaft lever (1) and presses the copper alloy end cover (3) against the sealing plastic sleeve (2);

the method is characterized in that: sealed plastic cover (2) through the mould internal injection technology with stainless steel shaft pole (1) form an organic whole, just stainless steel shaft pole (1) on seted up recess (5), sealed plastic cover at least part (2 a) imbed to recess (5) in.

2. The integrated valve stem of claim 1, wherein: the grooves (5) are divided into 2 groups, wherein one group of grooves (5) are continuous annular grooves (5 a), and the other group of grooves (5) are annular dotted grooves (5 b).

3. The integrated valve stem of claim 1, wherein: the two ends of the sealing plastic sleeve (2) extend outwards to form a ring of annular wall (6), a first accommodating cavity (7) is formed in the annular wall (6), the copper alloy end cover (3) is at least installed in the first accommodating cavity (7), and the outer wall of the copper alloy end cover (3) is abutted to the annular wall (6).

4. The integrated valve stem of claim 3, wherein: locating slot (8) have been seted up to the bottom in first holding chamber (7), the inboard of copper alloy end cover (3) is equipped with first bellying (3 a), first bellying (3 a) card go into extremely locating slot (8) in.

5. The integrated valve stem of claim 3, wherein: stainless steel shaft pole (1) on still seted up fastening groove (1 a), partly (4 a) card of jump ring is gone into to fastening groove (1 a), another part (4 b) stretch out outside fastening groove (1 a) and with copper alloy end cover (3) butt is spacing.

6. The integrated valve stem of claim 1, wherein: the outside of copper alloy end cover (3) is equipped with second bellying (3 b), second bellying (3 b) are the annular and enclose out second holding chamber (11), jump ring (4) set up in second holding chamber (11).

7. The integrated valve stem of claim 1, wherein: the inner end of the stainless steel shaft lever (1) is provided with a ball assembly.

8. The integrated valve stem of claim 7, wherein: the inner end of the stainless steel shaft rod (1) is provided with a semicircular groove (12), the ball assembly comprises a ball body (13) and a limiting pressing sleeve (14), the ball body (13) is embedded into the semicircular groove (12), and the limiting pressing sleeve (14) is combined with the inner end of the stainless steel shaft rod (1) to form a whole, so that at least part of the ball body (13) is exposed out of the semicircular groove (12).

9. The integrated valve stem of claim 8, wherein: the semi-circular groove (12) is also provided with a plurality of micro balls (15), and the ball body (13) is abutted with the micro balls (15).

10. The integrated valve stem of claim 8, wherein: a limit step (12 a) is arranged in the semicircular groove (12);

the outer side of the semicircular groove (12) opposite to the limiting step (12 a) is provided with an internal thread (12 b), the limiting pressing sleeve (14) is provided with an external thread (14 a), and the internal thread (12 b) is jointed with the external thread (14 a) so that the limiting pressing sleeve (14) is connected with the stainless steel shaft rod (1);

the inner side of the semicircular groove (12) relative to the limiting step (12 a) is provided with a smooth inner surface.