CN218440765U - Valve seat device of top-mounted ball valve - Google Patents

Abstract

The application provides this application provides a disk seat device of facial make-up type ball valve, it includes valve body, disk seat and gland nut, be provided with the screw thread on the valve body, gland nut along the spiral line of screw thread makes a round trip to screw in or unscrew, the disk seat includes the disk seat hole, and the ball valve is packed into disk seat downthehole and quilt gland nut compresses tightly. The device also comprises a pre-tightening spring, wherein the pre-tightening spring is provided with a pre-tightening area, and the pre-tightening area is compressed to provide pre-tightening force. The application provides a disk seat device of this upper assembling type ball valve has the assembly ball valve simply, can provide the advantage of accurate pretightning force.

Description

Valve seat device of top-mounted ball valve

Technical Field

The application belongs to the field of mechanical equipment, and particularly relates to a valve seat device of an upper-mounted ball valve.

Background

Ball valves are often needed in mechanical equipment, but installation of the ball valves needs special tools, installation procedures are complex, and cost increase is inevitable due to the need of the special tools. Moreover, after the ball valve is installed, a certain pre-tightening force is required to achieve the desired sealing effect. However, in the prior art, the pretightening force of the ball valve cannot be accurately controlled, and the precision of parts can only be judged or improved by experienced workers, so that the judgment accuracy is not high, and the standard operation requirement cannot be met; improving part precision will raise the cost and also cannot accomplish accurate control pretightning force.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the application provides a disk seat device of upper assembling type ball valve, and it includes valve body, disk seat and gland nut, be provided with the screw thread on the valve body, gland nut along the spiral line of screw thread makes a round trip to screw in or unscrew, still be provided with the disk seat hole on the valve body, the disk seat is packed into the disk seat is downthehole and quilt gland nut compresses tightly.

According to one embodiment of the present application, the seat apparatus of the top-loading ball valve further comprises a spring installed between the valve body and the compression nut.

According to one embodiment of the application, the spring comprises a first branch and a second branch, the first branch and the second branch being connected together.

According to one embodiment of the present application, the springs are in a involutory combination.

According to one embodiment of the application, the spring has a pretensioning region, the region between the first branch and the second branch forming the pretensioning region.

According to one embodiment of the application, the pretensioning force is provided by compressing the pretensioning region.

According to one embodiment of the present application, the valve body has a valve body sealing surface.

According to an embodiment of the application, a sealing groove is arranged on the valve seat, the sealing groove is provided with a first sealing surface, a second sealing surface and a third sealing surface, the first sealing surface is connected with the second sealing surface on one hand, and the first sealing surface is connected with the second sealing surface on the other hand.

According to an embodiment of the application, be predetermined contained angle between the first sealing surface and the second sealing surface, be predetermined contained angle between the first sealing surface and the third sealing surface, the angle between the first sealing surface and the second sealing surface is 90 degrees, the angle between the first sealing surface and the third sealing surface is 90 degrees.

According to an embodiment of the application, still include the sealing strip, the sealing strip is arranged in the seal groove, and with the first sealed face, the second sealed face, the third sealed face of seal groove and the valve body sealed face of valve body forms sealedly.

The application provides a disk seat device of this upper assembling type ball valve has the assembly ball valve simply, can provide the advantage of accurate pretightning force.

Drawings

Fig. 1 is a schematic structural diagram of a valve seat device of a top-loading ball valve according to an embodiment of the present invention.

Fig. 2 is a partially enlarged view of a valve seat device of a top-loading ball valve according to an embodiment of the present invention.

Detailed Description

The present application will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments have been given like element numbers associated therewith. In the following description, numerous specific details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in this specification in order not to obscure the core of the present application with unnecessary detail, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments, and the operation steps involved in the embodiments may be interchanged or modified in order as will be apparent to those skilled in the art. Accordingly, the description and drawings are merely for clarity of description of certain embodiments and are not intended to necessarily refer to a required composition and/or order.

The numbering of the components herein, as such, "first", "second", etc., is used merely to distinguish between the objects depicted and not to imply any order or technical meaning. The terms "connected" and "coupled" when used herein, unless otherwise indicated, include both direct and indirect connections (couplings).

Fig. 1 is a schematic structural view of a valve seat device of a top-loading ball valve according to an embodiment of the present invention. The valve seat device of the top-loading ball valve comprises a valve body 10, wherein threads 101 are arranged on the valve body 10 and are provided with a valve body sealing surface 102, and the valve body sealing surface 102 and the threads 101 are not located in the same plane. Of course, the valve body sealing surface 102 and the threads 101 may also lie in the same plane, but in the preferred embodiment of the present application, the valve body sealing surface 102 and the threads do not lie in the same plane.

The valve seat device of the top-loading ball valve further comprises a valve seat 50, the valve seat 50 is assembled with the valve body 10, of course, the assembling mode between the valve seat 50 and the valve body 10 is various, for example, threaded screw connection, welding, bonding and the like, and in the preferred embodiment of the present application, the valve seat 50 and the valve body 10 are connected together through clearance fit.

The valve body 10 is further provided with a valve seat hole 60, the valve seat hole 60 is a cavity with a preset space, and the wall of the valve seat hole 60 is provided with the thread 101.

The valve seat apparatus of the top-loading ball valve further includes a compression nut 20, and the compression nut 20 is fitted to the thread 101, that is, the compression nut 20 can be screwed into the valve seat hole 60 of the valve body 10 in a rotation direction of the thread.

Further, the valve seat hole 60 is a cylindrical cavity, the valve seat device of the top-loading type ball valve can be accessed through the valve seat hole 60, and then the compression nut 20 compresses the spring 30 and the valve seat 50, thereby completing the installation procedure of the ball valve.

The valve seat 50 is further provided with a sealing groove 501, and the sealing groove 501 is engaged with the valve body sealing surface of the valve body 10, so as to form a sealing cavity with a preset space.

The sealing groove 501 has a first sealing surface 5011, a second sealing surface 5012 and a third sealing surface 5013, the first sealing surface 5011 being in contact with the second sealing surface 5012 on the one hand and the first sealing surface 5011 being in contact with the third sealing surface 5013 on the other hand.

Further, the first sealing surface 5011 and the second sealing surface 5012 are at a predetermined included angle relative to each other and the first sealing surface 5011 and the third sealing surface 5013 are also at a predetermined included angle relative to each other. Then, as can be seen from basic mathematical knowledge, the included angle between the first sealing surface 5011 and the second sealing surface 5012 ranges from 0 degrees to 180 degrees, and then, in the preferred embodiment of the present application, the included angle between the first sealing surface 5011 and the second sealing surface 5012 is 90 degrees.

Similarly, the first sealing surface 5011 and the third sealing surface 5013 also have a predetermined included angle therebetween, and the included angle between the first sealing surface 5011 and the third sealing surface 5013 ranges from 0 degrees to 180 degrees, so that in the preferred embodiment of the present application, the included angle between the first sealing surface 5011 and the third sealing surface 5013 is 90 degrees.

The valve seat apparatus of the top-loading ball valve further includes a sealing strip 40, the sealing strip 40 is installed in the sealing groove 501 of the valve seat 50, and the cross section of the sealing strip 40 may have various shapes, such as a circle, an ellipse, a rectangle, a square, a diamond, and the like. In the preferred embodiment of the present application, the sealing strip 40 is circular in cross-section.

Then, further, the sealing strip 40 having a circular cross section is press-fitted to the first sealing surface 5011 of the sealing groove of the valve seat 50, and a sealing surface is formed therebetween. The sealing strip 40 is also press-fitted with the second sealing surface 5012 of the sealing groove of the valve seat 50, and a sealing surface is formed therebetween. The sealing strip 40 is also pressed against the third sealing surface 5013 of the sealing groove of the valve seat 50, and a sealing surface is also formed between the sealing strip and the third sealing surface 5013. When the valve seat 50 and the valve body 10 are assembled together, the valve body sealing surface 102 of the valve body 10 and the sealing strip 40 are pressed together and form a sealing surface therebetween. Therefore, when the valve seat 50 and the valve body 10 are assembled together, the sealing strip 40 serves to seal a gap between the valve seat 50 and the valve body 10.

The valve seat apparatus of the top-loading type ball valve further includes a spring 30, the spring 30 is installed between the valve seat 50 and the valve seat hole 20, and the outer diameter of the spring 30 is larger than the diameter of the valve seat hole 20, which is designed in such a manner that, when a compression nut installed on the valve seat hole 20 is screwed into the valve seat hole 20 along the thread 101, the compression nut 20 compresses the spring 30 to move toward one end of the valve seat 50, thereby pressing the ball valve installed in the valve seat 50, thereby providing a preload force to the ball valve.

Further, the spring 30 is a belleville spring. The spring 30 has a first branch 301 and a second branch 302, and the first branch 301 and the second branch 302 are connected by a method including, but not limited to, a fixed connection, a one-piece connection, a hinge connection, a welding, a screw connection, and the like. In a preferred embodiment of the present application, the first leg 301 and the second leg 302 of the spring 30 are in a involutive combination.

Still further, a preset included angle is formed between the first branch 301 and the second branch 302 of the spring 30, where the preset included angle is an included angle that can be adjusted between the first branch 301 and the second branch 302 according to a requirement.

The spring 30 has a pre-tensioning region 303, the pre-tensioning region 303 being the region formed by compressing the spring 30 to an extreme position. The angle between the first branch 301 and the second branch 302 and the length of the first branch 301 and the second branch 302 form the pretensioning region 303.

Further, the pretensioning region 303 is a sector-shaped region. According to the requirement, the compression nut 30 is screwed in the screwing direction of the thread 101, so that the first branch 301 and the second branch 302 of the spring 30 are compressed, the pretensioning area 303 between the first branch 301 and the second branch 302 is continuously reduced, and the pretensioning force is provided for the ball valve.

Of course, the magnitude of the pre-tightening force can be accurately calculated according to the change of the area of the pre-tightening region 303, so that the magnitude of the pre-tightening force applied to the ball valve can be calculated.

The application provides a disk seat device of this upper assembling type ball valve has the assembly ball valve simply, can provide the advantage of accurate pretightning force.

It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical field of the utility model technical personnel, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replacement.

Claims (10)

1. The utility model provides a disk seat device of facial make-up type ball valve which characterized in that, includes valve body, disk seat and gland nut, be provided with the screw thread on the valve body, gland nut along the spiral line of screw thread is made a round trip to screw in or is unscrewed, the disk seat includes the disk seat hole, and the ball valve is packed into the disk seat is downthehole and by gland nut compresses tightly.

2. The seat assembly of a top-loading ball valve as claimed in claim 1 further comprising a spring mounted between said seat and said seat bore.

3. The seat apparatus of a top-loading ball valve as claimed in claim 2 wherein said spring includes a first leg and a second leg, said first leg and said second leg being connected together.

4. A seat means of a top-loading ball valve in accordance with claim 3, wherein said spring is in a folded or folded combination.

5. The seat assembly of a top-loading ball valve as claimed in claim 4 wherein said spring has a pre-load region, the region between said first leg and said second leg forming said pre-load region.

6. The seat assembly of a top-loading ball valve according to claim 5, wherein the pretension is provided by compressing the pretensioning region.

7. The seat assembly of a top-loading ball valve as set forth in claim 6 wherein said valve body has a body sealing surface.

8. A valve seat assembly of a top-loading ball valve according to claim 7, wherein the valve seat is provided with a sealing groove having a first sealing surface, a second sealing surface and a third sealing surface, the first sealing surface being contiguous with the second sealing surface on the one hand and the second sealing surface on the other hand.

9. The seat assembly of a top-loading ball valve according to claim 8, wherein the first sealing surface is at a predetermined angle to the second sealing surface, the first sealing surface is at a predetermined angle to the third sealing surface, the first sealing surface is at a 90 degree angle to the second sealing surface, and the first sealing surface is at a 90 degree angle to the third sealing surface.

10. The valve seat apparatus of a top-loading ball valve as defined in claim 9, further comprising a sealing strip disposed within the sealing groove and forming a seal with the first sealing surface, the second sealing surface, the third sealing surface of the sealing groove and the body sealing surface of the valve body.

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