Lower channel three-way fixed ball valve

Abstract

The utility model relates to a lower channel three-way fixed ball valve which comprises a valve body, side valve covers are fixedly installed on the left side and the right side of the valve body respectively, valve seat assemblies and springs are installed in the side valve covers, a supporting plate and a ball body are installed in the valve body, a gland flange is connected to the upper portion of the valve body, a top flange is connected to the gland flange, and the top flange is connected to the lower portion of the valve body. The ball body is connected with a valve rod, the valve rod penetrates through the valve body to be connected with the ball body, meanwhile, a lower valve cover is fixedly installed on the lower side of the valve body, and the lower valve cover is communicated with the interior of the valve body. The supporting plate with the center hole larger than the channel and the lower valve cover below the valve body are installed, so that the channel can be located below the valve rod, and extra conversion connectors are not needed when pipelines are arranged on site.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of ball valve especially is a lower passage three -way fixed ball valve. BACKGROUND

[0002] Three -way ball valve is an important industrial control element, is mainly used for controlling the flow direction and flow of liquid or gas, but the majority of three -way ball valve on the market is floating ball valve, and the operating torque is big, and the valve seat is big, and the sealing performance is unstable, and the service life is short, and cannot be applicable to high -pressure, big -diameter occasion, and the existing market is mostly L type and T type three -way ball valve, and the passage is in the direction perpendicular to the valve stem, and when the pipeline needs to be arranged below the valve stem, then it is not good to use.

[0003] Meanwhile the existing three -way ball valve is all floating ball valve, and the sealing function is realized by the medium pressure to push the movement of the ball, and all the force is applied to the valve seat when switching, so that the operating torque is big, and the valve seat is big, and the sealing performance is unstable, and the service life is short. CONTENT OF UTILITY MODEL

[0004] The utility model discloses a lower passage three -way fixed ball valve, install a support plate and the lower valve cover below the valve body with the center hole being bigger than the passage, so that the passage can be located below the valve stem, so that when arranging the pipeline on the spot, no additional adapter is needed.

[0005] In order to realize the above -mentioned purpose, the utility model provides a lower passage three -way fixed ball valve, including the valve body, the left and right sides of valve body are all fixedly installed with side valve cover, install valve seat assembly and spring in side valve cover, install support plate and ball in the valve body, set up L -shaped flow channel in the ball, the upper side of valve body is connected with gland flange, the upper side of gland flange is connected with top flange, the upper side of ball is connected with valve stem, the valve stem passes through valve body and is connected with ball, and the downside of valve body is fixedly installed with lower valve cover, and the inside of lower valve cover is communicated with the inside of valve body.

[0006] Further, the side valve cover is fixedly installed on the valve body in a manner that the side valve cover stud and the side valve cover nut are fixed.

[0007] Further, the lower valve cover is fixedly installed on the valve body in a manner that the lower valve cover stud and the lower valve cover nut are fixed.

[0008] Further, the gland flange is fixedly connected to the valve body through the gland flange screw, and the top flange is fixedly connected to the gland flange through the top flange screw.

[0009] Further, the valve seat assembly comprises a valve seat, and the valve seat is provided with a lip-shaped sealing ring and a graphite ring.

[0010] The lower passage three-way fixed ball valve has the advantages that

[0011] 1、The ball is fixed by two bearings (support plate bearing and valve rod bearing), so that most of the medium pressure acts on the bearings, the bearings have a small friction coefficient, the torque is greatly reduced, the valve seat is pre-tightened by a spring, part of the medium pressure pushes the valve seat to the ball to realize the sealing function, the valve seat is small in stress and long in service life.

[0012] 2、The lower valve cover is installed below the valve body, so that the passage can be located below the valve rod, so that no additional conversion joint is needed when arranging the pipeline on site. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to make the content of the utility model more easily understood clearly, the utility model is further explained in detail below according to the specific embodiment of the utility model and in combination with the drawings.

[0014] Fig. 1 It is a structure schematic view of the lower passage three-way fixed ball valve of the utility model.

[0015] Fig. 2 It is a structure schematic view of the valve seat assembly.

[0016] In the drawing: 1, lower valve cover; 2, right side valve cover; 3, valve body; 4, support plate; 5, ball; 6, support plate bearing; 7, valve seat assembly; 8, valve rod bearing; 9, side valve cover stud; 10, side valve cover nut; 11, valve rod; 12, gland flange; 13, screw; 14, top flange; 15, lower valve cover stud; 16, lower valve cover nut; 17, lip-shaped sealing ring; 18, spring; 19, graphite ring; 20, valve seat. DETAILED DESCRIPTION

[0017] The utility model is further explained below in combination with the drawings and specific embodiments, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.

[0018] In combination Figs. 1-2 , the application provides a lower passage three-way fixed ball valve, including valve body 3, both sides of the valve body 3 are fixedly installed with side valve cover, the side valve cover includes left side valve cover located at the left side of valve body 3 and right side valve cover 2 located at the right side of valve body 3, the left side valve cover and right side valve cover 2 are fixedly installed on valve body 3 by the fixed mode of side valve cover stud 9 and side valve cover nut 10,

[0019] The valve body 3 is provided with a ball 5, the ball 5 is provided with an L-shaped flow channel, the upper portion of the valve body 3 is connected with a gland flange 12, the gland flange 12 is connected with a top flange 14, the ball 5 is connected with a valve stem 11 and can be rotated in the valve body 3 by the valve stem 11, the valve stem 11 penetrates through the valve body 3, the gland flange 12 and the top flange 14 and extends out of the valve body 3, meanwhile, the valve body 3 is installed with a valve stem bearing 8, the valve stem bearing 8 is sleeved on the outer side of the valve stem 11, so as to facilitate the rotation of the valve stem 11 relative to the valve body 3 and further drive the rotation of the ball 5.

[0020] The gland flange 12 is fixedly connected to the valve body 3 through a gland flange screw 13, and the top flange 14 is fixedly connected to the gland flange 12 through a top flange screw.

[0021] Meanwhile, the valve body 3 is also installed with a support plate 4, the support plate 4 is installed with a support plate bearing 6, the support plate bearing 6 abuts between the ball 5, the ball 5 can be supported by the support plate 4, and the ball 5 is more easily rotated by the support plate bearing 6.

[0022] In the embodiment, the side valve cover is installed with a valve seat assembly 7 and a plurality of springs 18, specifically, the valve seat assembly 7 includes a valve seat 20, the valve seat 20 abuts with the ball, the valve seat 20 is installed with a lip-shaped sealing ring 17 and a graphite ring 19 to ensure the sealing between the valve seat 20 and the side valve cover, the spring 18 abuts with the valve seat assembly 7, so that the valve seat assembly 7 abuts with the ball 5, thereby forming a sealing effect.

[0023] Meanwhile, a lower valve cover 1 is installed below the ball 5, the lower valve cover 1 is located between the left side valve cover and the right side valve cover 2, and the lower valve cover 1 is fixedly connected to the valve body 3 through a lower valve cover stud 15 and a lower valve cover nut 16, the lower valve cover 1 communicates with the inside of the valve body 3.

[0024] Specifically, when the valve is opened or closed, the fluid from the left side valve cover or the right side valve cover will always be diverted downward, realizing the function of connecting the pipeline below the valve,

[0025] Meanwhile, the ball 5 is completely limited by the support plate bearing 6 and the valve stem bearing 8, when the valve is full of medium, most of the pressure acts on the support plate bearing 6 and the valve stem bearing 8, the torque is very small when opening and closing, and a small part of the pressure acts on the valve seat 20, that is, the sealing specific pressure is formed, so that the downstream valve seat is sealed, and the valve seat 20 is also protected from being damaged by too much pressure.

[0026] In the description of the embodiments of the utility model, still need to explain, unless another explicit provision and limitation, if appear the term "arrangement", "connection" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0027] Obviously, the above embodiments are only examples for clearly illustrating, and not limited to the embodiments. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A lower ported tee fixed ball valve characterized by: The utility model provides a valve, including valve body, both sides of valve body are fixedly installed with side valve cover, side valve cover installs valve seat assembly and spring in, support plate and ball are installed in valve body, the top of valve body is connected with gland flange, the top flange is connected on the gland flange, the ball is connected with valve rod, valve rod passes through valve body and is connected with ball, the downside of valve body is fixedly installed with lower valve cover, and lower valve cover communicates with valve body inside.

2. A fixed ball valve with a lower passage according to claim 1, characterized in that: The side valve cover is fixedly installed on the valve body in a mode that the side valve cover stud and the side valve cover nut are fixed.

3. A fixed ball valve with a lower passage according to claim 1, characterized in that: The lower valve cover is fixedly installed on the valve body in a mode that the lower valve cover stud and the lower valve cover nut are fixed.

4. The fixed ball valve according to claim 1, wherein: The gland flange is fixedly connected to the valve body by a gland flange screw, and the top flange is fixedly connected to the gland flange by a top flange screw.

5. A fixed ball valve with a lower passage according to claim 1, characterized in that: The valve seat assembly includes a valve seat, a lip seal ring and a graphite ring are installed in the valve seat.

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