CN218582278U - Corrugated pipe stop valve - Google Patents

Abstract

The utility model relates to a bellows stop valve, including valve body, valve rod and rotation connecting piece, the valve body has the valve rod installation department, and along the radial direction of valve rod, the rotation connecting piece sets up between valve rod and valve rod installation department, wherein rotates connecting piece and valve rod fixed connection, and the valve rod can be connected in the valve rod installation department through rotating the connecting piece rotatoryly. The application provides a bellows stop valve during operation, the valve rod rotates in the valve rod installation department through rotating the connecting piece, has avoided the valve rod to contact at the valve rod installation department with other parts except that rotating the connecting piece, and valve rod and rotation connecting piece fixed connection, when the valve rod does the rotation of relative valve body through rotating the connecting piece like this, can not produce wearing and tearing to the valve rod, has extension valve rod life's effect.

Description

Corrugated pipe stop valve

Technical Field

The application relates to the technical field of stop valves, in particular to a corrugated pipe stop valve.

Background

A corrugated pipe stop valve belongs to a forced sealing type valve and is used for controlling on/off of medium flow in a pipeline. At present, current bellows stop valve sets up dog structure and spacing jump ring between valve rod and valve rod installation department usually, and the dog structure includes the pilot hole, spacing jump ring with locate the mounting groove matching on the valve rod. The valve rod is fixedly arranged on the valve body through the limiting clamp spring and the assembling hole, so that the axial displacement of the valve rod in the valve body is limited.

However, when the existing corrugated pipe stop valve works, contact friction exists between the limiting clamp spring and the valve rod, the friction resistance is large, the contact part is easy to wear, the service life of the valve rod is shortened, and meanwhile, energy consumption is caused by friction, and the driving of the valve rod is not facilitated.

SUMMERY OF THE UTILITY MODEL

Therefore, a need exists for a bellows stop valve, which solves the problem of wear of the contact portion of the valve rod during operation and prolongs the service life of the bellows stop valve.

The utility model provides a bellows stop valve, includes valve body, valve rod and rotation connecting piece, the valve body has the valve rod installation department, along the radial direction of valve rod, rotate the connecting piece set up in the valve rod with between the valve rod installation department, wherein, rotate the connecting piece with valve rod fixed connection, just the valve rod can pass through rotate the connecting piece connect with rotating in the valve rod installation department.

It can be understood that, through set up the rotation connecting piece between valve rod and valve rod installation department for the valve rod atress rotates the back, and the valve rod rotates in the valve rod installation department through rotating the connecting piece, has avoided the valve rod at the valve rod installation department with other part contacts except that rotating the connecting piece, and valve rod and rotation connecting piece fixed connection, when the valve rod does the rotation of relative valve body through rotating the connecting piece like this, can not produce wearing and tearing to the valve rod, has extension valve rod life's effect.

In one embodiment, the rotary connecting piece is provided with a rolling bearing, the rolling bearing is provided with an inner ring and an outer ring, and the valve rod is fixed with the inner ring in a welding mode or in an interference press-fitting mode; and the outer ring is welded and fixed or press-fitted and fixed with the valve rod mounting part in an interference manner.

It can be understood that, compared with the prior art, the friction resistance of the rolling bearing is smaller, so that the valve rod of the bellows stop valve is convenient to drive. And antifriction bearing's work wearing and tearing are little, and the gyration precision is high, can set up higher rotational speed to make valve rod working process more accurate smooth and easy, the efficiency of control bellows stop valve open or closed is higher.

In one embodiment, the valve rod comprises an annular boss, the annular boss is arranged at the position where the valve rod is matched with the valve rod mounting part, and the inner ring and the annular boss are fixed in a welding mode or in an interference press-fitting mode.

It can be understood that the connection strength between the valve rod and the inner ring of the rolling bearing meets the use requirement by welding fixation or interference press fitting fixation between the annular boss and the inner ring of the rolling bearing, so that the connection fixation between the valve rod and the inner ring of the rolling bearing can resist the impact of the valve rod during movement.

In one embodiment, a step surface is arranged on the valve rod mounting part, and the rotary connecting piece is arranged on the step surface and is connected and matched with the valve rod mounting part.

It can be understood that through the structural arrangement of the step surfaces, when the rotary connecting piece is connected and matched with the valve rod and the valve rod mounting part, the step surfaces on the valve rod mounting part can be used for supporting the rotary connecting piece, so that the rotary connecting piece is conveniently connected and connected with the valve rod and the valve rod mounting part.

In one embodiment, the bellows stop valve further comprises a bellows and a valve core, the bellows is sleeved on part of the periphery of the valve core, one end of the bellows is fixedly connected with the valve core, and the other end of the bellows is fixedly connected with the valve body and/or the rotary connecting piece.

It can be understood that, through the above structural arrangement, the bellows stop valve can limit circumferential movement of the valve core by using the bellows, so as to meet the use requirement that the valve rod of the bellows stop valve drives the valve core to move along the axial direction of the valve body.

In one embodiment, the other end of the corrugated pipe comprises a flanging structure, one end of the corrugated pipe is welded and fixed with the valve core, the flanging structure at the other end of the corrugated pipe is located between the step surface and the rotating connecting piece, and the flanging structure is welded and fixed with the step surface and the rotating connecting piece respectively.

It can be understood that, one end of the bellows which is far away from the valve core is arranged between the step surface and the rotary connecting piece, the position of the bellows between the rotary connecting piece and the step surface is set to be a flanging structure, the connecting position between the valve rod and the rotary connecting piece can be sealed, so that the bellows stop valve works, the leakage of medium flow in the valve body at the position where the rotary connecting piece is located can be prevented, and the bellows stop valve has good sealing performance, and the sealing reliability of the valve rod installation part can meet the use requirement of products.

In one embodiment, the valve rod is provided with an external thread, the valve core is provided with an internal thread, and the valve rod is in threaded connection with the valve core through the matching between the external thread and the internal thread.

In one embodiment, the valve body further comprises a communication port, a first connecting pipe and a second connecting pipe are mounted on the valve body, and when the valve core is far away from the communication port along the axial direction, the communication port is communicated with the first connecting pipe and the second connecting pipe; when the valve core is close to the communication opening along the axial direction and is abutted against the communication opening, the communication opening is not communicated with the first connecting pipe and the second connecting pipe.

In one embodiment, the valve rod comprises an annular boss, the valve rod is fixedly connected with the rotary connecting piece through the annular boss, and the valve core performs axial stroke limiting through the annular boss and the hole wall of the communication port.

In one embodiment, the first connecting pipe and the second connecting pipe are arranged at an angle.

Due to the application of the technical scheme, compared with the prior art, the method has the following advantages:

according to the corrugated pipe stop valve, through reasonable structural design, when the corrugated pipe stop valve works, the valve rod rotates relative to the valve rod mounting part through the rotary connecting piece, and due to the fact that the rotary connecting piece is connected and matched with the valve rod, abrasion cannot occur between the valve rod and the rotary connecting piece, and therefore the valve rod can be protected; and the structural characteristic of the rotary connecting piece is utilized, so that the resistance of the valve rod when the valve rod rotates on the valve body through the rotary connecting piece is reduced, the valve rod is driven to rotate, and the service life of the corrugated pipe stop valve is prolonged. Simultaneously, this bellows stop valve is compared in current product and is saved the dog structure, has improved original product structure to the rotation connecting piece on the replacement plays the supporting role of original dog, has simplified the installation procedure.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a perspective view of a bellows shut-off valve according to an embodiment of the present application.

Fig. 2 is a sectional view of a bellows shut-off valve according to an embodiment of the present application.

Fig. 3 is a partial enlarged view of fig. 2 at P.

Reference numerals: 100. a bellows stop valve; 10. a valve body; 11. a valve stem mounting portion; 111. a step surface; 12. a first connecting pipe; 13. a second connection pipe; 14. a valve assembly; 15. a communication port; 20. a valve stem; 21. an annular boss; 22. an external thread; 30. rotating the connecting piece; 301. a rolling bearing; 31. an inner ring; 32. an outer ring; 40. a bellows; 50. a valve core; 51. an internal thread.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The use of the terms "upper", "lower", "left", "right" and similar expressions in the description of the present application is for illustrative purposes only and does not indicate a unique embodiment.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the description of the present application, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 3, the present application provides a bellows stop valve 100, which includes a valve body 10, a valve stem 20, a rotary connector 30, a bellows 40, and a valve core 50. Wherein the valve stem 20 partially protrudes outwardly with respect to the valve body 10, as other embodiments, the valve stem 20 may be internally disposed in the valve body 10.

In the present application, the valve body 10 has a valve rod mounting portion 11, and along the radial direction of the valve rod 20, the rotary connecting member 30 is disposed between the valve rod 20 and the valve rod mounting portion 11, wherein the rotary connecting member 30 is connected to the valve rod 20, so that the valve rod 20 can be rotatably connected to the valve rod mounting portion 11 through the rotary connecting member 30, thereby specifically realizing the assembly connection between the valve rod 20 and the valve rod mounting portion 11 through the rotary connecting member 30. After the valve rod 20 is forced to rotate, the valve rod 20 rotates in the valve rod mounting part 11 through the rotary connecting piece 30, the valve rod 20 is prevented from contacting with other parts except the rotary connecting piece 30 in the valve rod mounting part 11, the corrugated pipe stop valve 100 is driven to rotate the valve rod 20 when in work, abrasion of the valve rod 20 is reduced, and the service life of the valve rod 20 is prolonged.

As shown in fig. 2, in an embodiment, the rotation connecting member 30 is provided as a rolling bearing 301, and the friction between the valve rod 20 and the valve rod mounting portion 11 is rolling friction by using the structural characteristics of the rolling bearing 301, and since the rolling bearing 301 is respectively connected with the valve rod 20 and the valve rod mounting portion 11 in a matching manner, the friction resistance when the valve rod 20 moves can be reduced, so as to facilitate driving of the rotation movement of the valve rod 20, and the rolling bearing has small working wear, high rotation precision, and a higher rotation speed can be set, so that the working process of the valve rod 20 is more precise and smooth, the efficiency of controlling the opening or closing of the bellows stop valve 100 is higher, and the wear of the valve rod 20 caused by the rotation of the valve rod 20 relative to the valve rod mounting portion 11 is avoided. It should be noted that the rotary connecting member 30 is not limited to the rolling bearing 301 shown in the drawings, and it will be apparent to those skilled in the art that the rotary connecting member 30 may be configured as other types of bearings, wherein the bearings are fixedly connected to the valve rod 20 and rotatably engaged with the valve rod mounting portion 11, and will not be described herein. Alternatively, the rotary joint 30 may be provided as another component capable of rotatably connecting the valve rod 20 and the valve rod mounting portion 11.

The rolling bearing 301 includes an inner ring 31, the inner ring 31 is fixedly connected to the valve rod 20, and specifically, the inner ring 31 and the valve rod 20 are fixed by welding or interference press-fitting, so as to facilitate connection between the inner ring 31 and the valve rod 20, and enable connection strength between the inner ring 31 and the valve rod 20 to meet use requirements. It should be noted that the welding manner between the valve rod 20 and the inner ring 31 may specifically select a welding process such as laser welding, argon arc welding, and the like, and will not be elaborated herein.

As shown in fig. 2, the valve stem 20 includes an annular boss 21, the annular boss 21 is disposed at a position where the valve stem 20 is fitted to the valve stem mounting portion 11, and the inner ring 31 of the rolling bearing 301 is fixed to the annular boss 21 by welding, interference press-fitting, or the like.

It can be understood that, through the structural setting of annular boss 21 on valve rod 20, make this bellows stop valve 100 during operation, when case 50 reaches the maximum displacement distance along axial direction to the motion of valve rod installation department 11 direction, case 50 can support with annular boss 21 and bump, make annular boss 21 restrict the maximum displacement of case 50 to the motion of valve rod installation department 11 direction, in order to prevent this bellows stop valve 100 when opening the valve, case 50 upward movement impact rotation connecting piece 30, the stability of avoiding rotating connecting piece 30 installation receives adverse effect.

The rolling bearing 301 further includes an outer ring 32, and the outer ring 32 is fixedly connected to the valve rod mounting portion 11, and may be fixed by welding or interference press-fitting. It should be noted that the fixing manner between the outer ring 32 of the rolling bearing 301 and the valve rod mounting portion 11 is not limited to the above, and it is obvious to those skilled in the art that the outer ring 32 of the rolling bearing 301 and the valve rod mounting portion 11 may be limited and fixed by using another limiting member such as a gland, wherein the gland can be screwed onto the valve rod mounting portion 11 in a threaded manner.

As shown in fig. 2 and 3, the valve rod mounting portion 11 is provided with a step surface 111, and the rotary joint 30 is provided on the step surface 111 and is coupled to the valve rod mounting portion 11 and the valve rod 20. This allows the pivotal connector 30 to be supported by the stepped surface 111 of the stem mounting portion 11 when the pivotal connector 30 is coupled to and engaged with the stem 20 and the stem mounting portion 11, thereby facilitating the assembly of the pivotal connector 30 to and from the stem 20 and the stem mounting portion 11.

As shown in fig. 2 and 3, the bellows 40 is sleeved on a part of the periphery of the valve core 50, one end of the bellows 40 is fixedly connected with the valve core 50, and the other end of the bellows 40 away from the valve core 50 is fixedly connected with the valve body 10 and/or the rotary connecting piece 30 to limit the circumferential movement of the valve core 50 relative to the valve body 10 along with the valve rod 20, so that the use requirement that the valve rod 20 drives the valve core 50 to move axially in the valve body 10 when the bellows stop valve 100 works can be met.

In the present embodiment, the other end of the bellows 40 facing away from the valve core 50 is fixedly disposed at a position between the step surface 111 and the rotary connection member 30, so as to implement the assembly connection of the bellows 40 in the bellows stop valve 100.

It can be understood that, the end of the bellows 40 away from the valve core 50 is disposed at the position between the step surface 111 and the rotary connector 30, the position of the bellows 40 between the rotary connector 30 and the step surface 111 is set to be a flanging structure, the flanging structure is welded and fixed with the step surface 111 and the rotary connector 30, so that the connection position between the valve rod 20 and the rotary connector 30 can be sealed, when the bellows stop valve 100 works, the medium in the valve body 10 can be prevented from leaking at the position of the rotary connector 30, and the bellows stop valve 100 has good sealing performance, the medium is prevented from leaking into the bellows 40, and the sealing reliability of the valve rod mounting portion 11 meets the product use requirements. Similarly, a flange structure may be disposed at an end of the bellows 40 fixedly connected to the valve core 50, and the bellows 40 is fixedly connected to the valve core 50 through the flange structure, for example, through welding.

In one embodiment, the bellows 40 is a metal member, and one end of the bellows 40 is welded to the valve core 50, and the other end of the bellows 40 is welded to the step surface 111. It should be noted that the bellows 40 may also be configured as a rubber member, so that the spacing between the bellows 40 and the valve core 50 and the step surface 111 may be limited and fixed by using a limiting member, which will not be described herein.

The valve body 10 is provided with a first connecting pipe 12 and a second connecting pipe 13, the valve body 10 comprises a communicating port 15, the valve core 50 can control the on-off of the communicating port 15, specifically, the valve core 50 can move away from the communicating port 15 along the axial direction, the first connecting pipe 12 is communicated with the second connecting pipe 13, and the valve core 50 is abutted against the annular boss 21 to limit the stroke of the valve core 50; the valve core 50 can also move close to the communication port 15 along the axial direction, so that the valve core 50 is abutted against the communication port 15 to form sealing, the first connecting pipe 12 is not communicated with the second connecting pipe 13, and the stroke of the valve core 50 is limited through the hole wall of the communication port 15.

Further, the first connecting pipe 12 and the second connecting pipe 13 of the present application are disposed at an angle, such as a right angle in the present embodiment, and of course, the angle between the first connecting pipe 12 and the second connecting pipe 13 may also be disposed at other degrees, such as 45 °, 135 °, etc., as required.

As shown in fig. 2, the external thread 22 is disposed on the valve rod 20, the internal thread 51 is disposed on the valve core 50, the valve rod 20 is in threaded fit with the valve core 50 through the fit between the external thread 22 and the internal thread 51, so that when the bellows stop valve 100 operates, and the valve rod 20 is driven by an external force to rotate (rotate circumferentially) relative to the valve rod mounting portion 11, because the rotational connecting member 30 is fixedly connected to the valve rod mounting portion 11, axial movement of the valve rod 20 is limited by the rotational connecting member 30, and because the valve core 50 is limited circumferentially by the bellows 40, axial movement (non-rotation circumferentially) of the valve core 50 can be realized by using the threaded fit structure between the valve rod 20 and the valve core 50, the bellows 40 can be driven by the valve core 50 to extend and retract while moving axially, circumferential limitation of the valve core 50 is realized, and sealing of the bellows stop valve 100 is realized by the bellows 40, thereby preventing leakage of the medium fluid.

In addition, the bellows cut-off valve 100 of the present application further includes a valve assembly 14, and when medium flows are circulated between the first connecting pipe 12 and the second connecting pipe 13, the outside may supplement the medium flows in the connecting pipes through the valve assembly 14 according to actual needs. Of course, the valve assembly 14 may be selectively disposed or not disposed according to actual requirements.

In summary, in the bellows stop valve 100 claimed in the present application, the valve rod 20 is rotatably connected to the valve rod mounting portion 11 through the rotary connector 30, wherein the rotary connector 30 is fixedly connected to the valve rod 20 and the valve rod mounting portion 11, respectively, so that after the valve rod 20 is rotated by a force, the valve rod 20 is rotated in the valve rod mounting portion 11 through the rotary connector 30, and the valve rod 20 is prevented from contacting with other components except the rotary connector 30 at the valve rod mounting portion 11, and therefore the valve rod 20 is not abraded. At the same time, the valve stem 20 is restrained by the rotational coupling 30 such that axial displacement of the valve stem 20 within the valve body 10 is limited when subjected to a force. Compared with the prior art, the stop block structure is omitted, and the structure is simplified.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims (10)

1. The utility model provides a bellows stop valve, its characterized in that includes valve body (10), valve rod (20) and rotation connecting piece (30), valve body (10) have valve rod installation department (11), along the radial direction of valve rod (20), rotation connecting piece (30) set up in valve rod (20) with between valve rod installation department (11), wherein rotation connecting piece (30) with valve rod (20) fixed connection, just valve rod (20) can pass through rotation connecting piece (30) rotationally connect in valve rod installation department (11).

2. The bellows shut-off valve according to claim 1, wherein the rotary connector (30) is provided as a rolling bearing (301), the rolling bearing (301) has an inner ring (31) and an outer ring (32), and the valve stem (20) is fixed to the inner ring (31) by welding or interference press fitting; the outer ring (32) and the valve rod mounting part (11) are fixed in a welding mode or in an interference press-fitting mode.

3. The bellows shut-off valve according to claim 2, wherein the valve stem (20) includes an annular boss (21), the annular boss (21) is provided at a position where the valve stem (20) is fitted to the valve stem mounting portion (11), and the inner ring (31) and the annular boss (21) are fixed by welding or press fitting with interference.

4. A stop valve according to any one of claims 1 to 3, wherein the valve stem mounting portion (11) is provided with a stepped surface (111), and the rotary joint member (30) is provided on the stepped surface (111) and is connected to and fitted to the valve stem mounting portion (11).

5. The bellows stop valve according to claim 4, wherein the bellows stop valve (100) further comprises a bellows (40) and a valve core (50), the bellows (40) is sleeved on a part of the outer periphery of the valve core (50), one end of the bellows (40) is fixedly connected with the valve core (50), and the other end of the bellows (40) is fixedly connected with the valve body (10) and/or the rotary connector (30).

6. The bellows stop valve according to claim 5, wherein the other end of the bellows (40) includes a flange structure, one end of the bellows (40) is welded to the valve element (50), the flange structure at the other end of the bellows (40) is located between the step surface (111) and the rotary connector (30), and the flange structures are welded to the step surface (111) and the rotary connector (30), respectively.

7. The bellows stop valve according to claim 5 or 6, characterized in that an external thread (22) is provided on the stem (20), an internal thread (51) is provided on the spool (50), and the stem (20) and the spool (50) are threadedly connected by cooperation between the external thread (22) and the internal thread (51).

8. The bellows shut-off valve according to claim 7, characterized in that the valve body (10) further comprises a communication port (15), the valve body (10) is provided with a first connection pipe (12) and a second connection pipe (13), and when the valve core (50) is axially away from the communication port (15), the communication port (15) communicates the first connection pipe (12) and the second connection pipe (13);

when the valve core (50) is close to the communication opening (15) along the axial direction and is abutted against the communication opening (15), the communication opening (15) is not communicated with the first connecting pipe (12) and the second connecting pipe (13).

9. The bellows shut-off valve according to claim 8, characterized in that the valve stem (20) comprises an annular boss (21), the valve stem (20) is fixedly connected with the rotary connector (30) through the annular boss (21), and the valve core (50) performs axial stroke limitation through the annular boss (21) and a hole wall of the communication port (15).

10. Bellows shut-off valve according to claim 8 or 9, characterised in that the first connecting pipe (12) and the second connecting pipe (13) are arranged at an angle.

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