CN216045576U

CN216045576U - Novel eccentric tank bottom half ball valve

Info

Publication number: CN216045576U
Application number: CN202122570779.9U
Authority: CN
Inventors: 谷成明; 田世忠; 张锋; 应柯辉; 余万吉; 林时庆; 苏晓春; 叶周龙
Original assignee: Huanqiu Valve Group Co ltd
Current assignee: Huanqiu Valve Group Co ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-03-15
Anticipated expiration: 2031-10-25

Abstract

The utility model belongs to the technical field of half-ball valves, in particular to a novel eccentric tank bottom half-ball valve which comprises a valve body, a lower valve rod, a half-ball valve clack, an integrated valve seat flange, a spherical tank bottom flange, an upper valve rod and a pneumatic actuator, wherein the valve body is provided with a valve seat; the integrated valve seat flange is fixed on the valve body through a cylindrical head hexagon socket head cap screw and a rubber O ring; the bottom and the top of the other end of the integrated valve seat flange are respectively fixedly connected with the valve body and the spherical tank bottom flange through a hexagon nut and a stud; the lower end of the hemispherical valve clack is fixedly connected with the valve body in a limiting way through a lower valve rod, a lower self-lubricating shaft sleeve and a spring shaft end retainer ring. The pneumatic actuator drives the hemispherical valve clack to rotate through the valve rod to realize the opening, closing and sealing functions of the valve; the middle cavity of the hemispherical valve clack can not retain media, the distance between the sealing surface of the inlet end of the valve and the tank body is greatly shortened, the retained amount is reduced, the pneumatic actuator obtains enough installation space through the rotation center of the inclined valve rod, the pneumatic actuator does not interfere with the tank bottom, and the pneumatic actuator is reliable and durable.

Description

Novel eccentric tank bottom half ball valve

Technical Field

The utility model belongs to the technical field of hemispherical valves, and particularly relates to a novel eccentric tank bottom hemispherical valve.

Background

The tank bottom valve adopts a floating soft seal ball valve on the market because the caliber is generally not large, and chemical raw materials such as melamine and other liquids can be crystallized and solidified after being retained for a long time or losing temperature. The middle cavity can retain media and generate crystallization and solidification after the floating soft seal ball valve is completely closed, the sealing surface is scratched to cause leakage when the ball body is opened and closed, and the ball body is stuck and clamped to be incapable of acting when the ball body is heavy. In addition, because a certain pipeline distance exists between the tank bottom and the ball valve, the retention medium in the space is easy to crystallize, solidify and block the pipeline. Once a valve or a pipeline at the bottom of the tank fails, the tank needs to be shut down and cleaned, and the valve and the pipeline are replaced in a narrow space at the bottom of the tank. Therefore, a novel ball valve needs to be developed, and the problems of pipeline blockage and valve blockage caused by retention of a tank bottom pipeline medium and retention of a valve middle cavity medium are solved.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a novel eccentric tank bottom half ball valve which has the advantages of close distance between a valve sealing surface and a tank bottom, convenient installation, no medium retention in a middle cavity, no valve clack blocking or pipeline blocking caused by crystallization and solidification of the retained medium, reliability and durability.

In order to achieve the purpose, the utility model provides the following technical scheme: a novel eccentric tank bottom half ball valve comprises a valve body, a lower self-lubricating shaft sleeve, a lower valve rod, a half ball valve clack, an integrated valve seat flange, a spherical tank bottom flange, an upper self-lubricating shaft sleeve, an upper valve rod, a filler gland, a support and a pneumatic actuator;

the integrated valve seat flange is fixed on the valve body through a cylindrical head hexagon socket head cap screw and a rubber O ring; the bottom and the top of the other end of the integrated valve seat flange are respectively fixedly connected with the valve body and the spherical tank bottom flange through a hexagon nut and a stud; the lower end of the hemispherical valve clack is limited and fixedly connected with the valve body through a lower valve rod, a lower self-lubricating shaft sleeve and a spring shaft end retainer ring; the upper end of the hemispherical valve clack is connected with an upper valve rod through a spline, and the upper valve rod is fixed with the valve body through an upper self-lubricating shaft sleeve; the upper valve rod penetrates through the valve body and is connected with a pneumatic actuator; the pneumatic actuator is fixedly connected with the valve body through a support and a bolt.

Preferably, a packing is filled between the upper valve rod and the valve body, and a packing gland is fixedly arranged on the port of the valve body through a bolt.

Preferably, the rotation centers of the hemispherical valve clack and the upper valve rod are inclined to form an inclination angle of 12-20 degrees eccentric with the sealing surface.

Preferably, a sealing ring is arranged at the joint of the hemispherical valve flap and the integrated valve seat flange.

Preferably, the edge welding surface of the spherical tank bottom flange is fixed with the tank bottom through welding; the inner spherical surface binding surface of the spherical tank bottom flange is attached and connected with the tank bottom.

Compared with the prior art, the utility model has the beneficial effects that:

the pneumatic actuator drives the hemispherical valve clack to rotate through the valve rod to realize the opening, closing and sealing functions of the valve; the middle cavity of the hemispherical valve clack can not retain media, the distance between the sealing surface of the inlet end of the valve and the tank body is greatly shortened, the retained amount is reduced, and the pneumatic actuator can obtain enough installation space through the rotation center of the inclined valve rod without interfering with the tank bottom; the distance between the sealing surface of the valve and the bottom of the tank is very close, the installation is convenient, the medium cannot be retained in the middle cavity, the valve clack is not blocked or the pipeline is not blocked due to crystallization and solidification of the retained medium, and the valve is reliable and durable; the valve is suitable for the transmission control of media at a bottom discharge hole of a chemical storage tank or a reaction kettle, and is generally installed with the center of a valve flow passage vertical to the ground, hereinafter referred to as a tank bottom valve.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of a novel eccentric tank bottom half ball valve of the present invention;

in the figure:

1. a valve body; 2. a lower self-lubricating shaft sleeve; 3. a lower valve stem; 4. a spring shaft end retainer ring; 5. a hemispherical valve flap; 6. a rubber O ring; 7. a socket head cap screw; 8. an integrated valve seat flange; 9. a spherical tank bottom flange; 10. a stud; 11. a hexagonal nut; 12. an upper self-lubricating shaft sleeve; 13. an upper valve stem; 14. a filler; 15. a packing gland; 16. a support; 17. a pneumatic actuator; 91. a spherical surface binding surface; 92. and (7) welding the edges to the surface.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Example 1

Referring to fig. 1, the present invention provides the following technical solutions: a novel eccentric tank bottom half ball valve is composed of a valve body 1, a lower self-lubricating shaft sleeve 2, a lower valve rod 3, a half ball valve clack 5, an integrated valve seat flange 8, a spherical tank bottom flange 9, an upper self-lubricating shaft sleeve 12, an upper valve rod 13, a filler 14, a filler gland 15, a support 16 and a pneumatic actuator 17;

the integrated valve seat flange 8 is fixed on the valve body 1 through a cylindrical head hexagon socket head cap screw 7 and a rubber O ring 6; the bottom and the top of the other end of the integrated valve seat flange 8 are respectively fixedly connected with the valve body 1 and a spherical tank bottom flange 9 through a hexagon nut 11 and a stud 10; the lower end of the hemispherical valve clack 5 is fixedly connected with the valve body 1 in a limiting way through a lower valve rod 3, a lower self-lubricating shaft sleeve 2 and a spring shaft end retainer ring 4; the upper end of the hemispherical valve clack 5 is connected with an upper valve rod 13 through a spline, and the upper valve rod 13 is fixed with the valve body 1 through an upper self-lubricating shaft sleeve 12; the upper valve rod 13 penetrates through the valve body 1 and is connected with a pneumatic actuator 17; the pneumatic actuator 17 is fixedly connected with the valve body 1 through a bracket 16 by bolts.

Specifically, a packing 14 is filled between the upper valve rod 13 and the valve body 1, and a packing gland 15 is fixedly arranged on a port of the valve body 1 through a bolt.

Specifically, the rotation centers of the hemispherical valve clack 5 and the upper valve rod 13 and the sealing surface are obliquely arranged to form an inclination angle of 12-20 degrees and are eccentric; the appearance position of the pneumatic actuator 17 is reduced and is far away from the outline of the tank bottom, so that the situation that the pneumatic actuator 17 is interfered with the outline of the tank bottom to cause the failure in installation is avoided.

Specifically, a sealing ring is arranged at the joint of the hemispherical valve clack 5 and the integrated valve seat flange 8.

Specifically, the edge welding surface 92 of the spherical tank bottom flange 9 is fixed with the tank bottom through welding; the inner spherical surface binding surface 91 of the spherical tank bottom flange 9 is bound and connected with the tank bottom.

The working principle and the using process of the utility model are as follows: when the integrated valve seat is used, the rotary action of opening and closing the valve is transmitted to the hemispherical valve clack 5 by the pneumatic actuator 17 through the upper valve rod 13 when the valve is opened and closed, the sealing and the cut-off of the valve are realized when the hemispherical valve clack 5 is rotated and attached to the integrated valve seat flange 8, and the opening of the valve and the transmission of media are realized when the hemispherical valve clack 5 is rotated and separated from the integrated valve seat flange 8; when the valve is installed, the edge welding surface 92 of the spherical tank bottom flange 9 is fixed with the tank bottom through welding; the inner spherical surface binding surface 91 of the spherical tank bottom flange 9 is bound and connected with the tank bottom; finally, a stud 10 is screwed into the spherical tank bottom flange 9, and the stud 10 penetrates through a screw hole at the inlet end of the valve and the integrated valve seat flange 8 to be fastened and fixed by a hexagon nut 11.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a novel eccentric tank bottoms half ball valve which characterized in that: the valve consists of a valve body (1), a lower self-lubricating shaft sleeve (2), a lower valve rod (3), a hemispherical valve clack (5), an integrated valve seat flange (8), a spherical tank bottom flange (9), an upper self-lubricating shaft sleeve (12), an upper valve rod (13), a filler (14), a filler gland (15), a support (16) and a pneumatic actuator (17);

the integrated valve seat flange (8) is fixed on the valve body (1) through a cylindrical head hexagon socket head cap screw (7) and a rubber O ring (6); the bottom and the top of the other end of the integrated valve seat flange (8) are respectively fixedly connected with the valve body (1) and the spherical tank bottom flange (9) through a hexagon nut (11) and a stud (10); the lower end of the hemispherical valve clack (5) is fixedly connected with the valve body (1) in a limiting way through a lower valve rod (3), a lower self-lubricating shaft sleeve (2) and a spring shaft end retainer ring (4); the upper end of the hemispherical valve clack (5) is connected with an upper valve rod (13) through a spline, and the upper valve rod (13) is fixed with the valve body (1) through an upper self-lubricating shaft sleeve (12); the upper valve rod (13) penetrates through the valve body (1) and is connected with a pneumatic actuator (17); the pneumatic actuator (17) is fixedly connected with the valve body (1) through a bracket (16) by a bolt.

2. The novel eccentric tank bottom hemisphere valve of claim 1, characterized in that: and a packing (14) is filled between the upper valve rod (13) and the valve body (1), and a packing gland (15) is fixedly arranged on the port of the valve body (1) through a bolt.

3. The novel eccentric tank bottom hemisphere valve of claim 1, characterized in that: the rotation centers of the hemispherical valve clack (5) and the upper valve rod (13) and the sealing surface are obliquely arranged to form an inclination angle of 12-20 degrees and are eccentric.

4. The novel eccentric tank bottom hemisphere valve of claim 1, characterized in that: and a sealing ring is arranged at the joint of the hemispherical valve clack (5) and the integrated valve seat flange (8).

5. The novel eccentric tank bottom hemisphere valve of claim 1, characterized in that: the edge welding surface (92) of the spherical tank bottom flange (9) is fixed with the tank bottom through welding; the inner spherical surface binding surface (91) of the spherical tank bottom flange (9) is bound and connected with the tank bottom.