C-shaped ball valve

Abstract

The C-shaped ball valve comprises a valve body and a valve element, a cavity is formed in the valve body, sealing covers are installed at the top end and the bottom end of the valve body respectively, the sealing cover at the top end of the valve body is connected with an upper rotating rod in a rotating mode through a sealing bearing, and the sealing cover at the bottom end of the valve body is connected with a lower rotating rod in a rotating mode through a sealing bearing. The top end of the valve element is fixedly connected with the upper rotating rod. The sealing performance is improved by arranging the movable valve seat, when the ball valve is used and opened, the upper rotating rod at the top end drives the valve element to rotate at the moment, the valve is opened, the upper rotating rod and the lower rotating rod drive the sector gear to rotate through the transmission gear, the sector gear drives the eccentric block to rotate through the rotating rod, and the eccentric block is driven to rotate through the eccentric block. And the rotation of the valve core and the retraction of the valve seat are synchronously carried out, so that the abrasion between the valve core and the valve seat during rotation is reduced, the sealing performance of the ball valve is improved, and the service life of the ball valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a C-type ball valve. Background Art

[0002] C-type ball valve is a type of ball valve, which has the characteristics of simple structure and large fluid channel. However, since the valve seat is only set on one side, its stability and adjustment performance are not as good as ordinary ball valves.

[0003] The position of the valve seat of the traditional C-type ball valve is fixed. When the ball valve is opened and closed, the friction between the valve core and the valve seat will cause wear of the valve seat. Long-term practical use will easily cause the sealing of the valve seat and the valve core to decrease, affecting the sealing quality of the ball valve, shortening its service life and replacing cycle.

[0004] Therefore, how to provide a C-type ball valve to solve the problems existing in the prior art is of great significance to its application. Utility Model Content

[0005] In view of this, the purpose of the present application is to provide a C-type ball valve to solve the problem that the position of the valve seat of the traditional C-type ball valve is fixed. When the ball valve is opened and closed, the friction between the valve core and the valve seat will cause wear of the valve seat. Long-term practical use will easily cause the sealing of the valve seat and the valve core to decrease, affecting the sealing quality of the ball valve, and resulting in a short service life and a short replacement cycle.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A C-type ball valve comprises a valve body and a valve core, wherein a cavity is formed inside the valve body, and sealing covers are installed at the top and bottom ends of the valve body, the sealing cover at the top end of the valve body is rotatably connected to an upper rotating rod via a sealing bearing, and the sealing cover at the bottom end of the valve body is rotatably connected to a lower rotating rod via a sealing bearing, the top end of the valve core is fixedly connected to the upper rotating rod, and the bottom end of the valve core is fixedly connected to the lower rotating rod, the valve core is located inside the cavity, a movable groove is formed on one side of the cavity, a valve seat is slidably connected inside the movable groove, and the valve seat and the movable groove are elastically connected via a spring.

[0008] Preferably, the top and bottom ends of the valve body are both fixedly connected to brackets, the bracket is rotatably connected to a rotating rod, and one end of the rotating rod is fixedly connected to a sector gear.

[0009] Preferably, the middle parts of the upper rotating rod and the lower rotating rod are fixedly connected with transmission gears, and the sector gear is meshingly connected with the transmission gears.

[0010] Preferably, a movable cavity is opened in the side wall of the valve body, a sliding rod is slidably connected in the movable cavity, one end of the sliding rod is fixedly connected to the valve seat, and the other end of the sliding rod is fixedly connected to a protrusion.

[0011] Preferably, the other end of the rotating rod is fixedly connected with an eccentric block, the eccentric block is located inside the movable cavity, and the eccentric block is in contact with the protrusion.

[0012] Preferably, a water inlet flange and a water outlet flange are respectively installed on both sides of the valve body, and the water inlet flange is located on the side where the valve seat is located.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model improves the sealing performance by arranging a movable valve seat. During use, when the ball valve is opened, the valve core is driven to rotate by the upper rotating rod at the top to realize the opening of the valve. At this time, the upper and lower rotating rods drive the fan-shaped gear to rotate through the transmission gear, and the fan-shaped gear drives the eccentric block to rotate through the rotating rod, so that the protrusion drives the valve seat to retreat through the sliding rod, and the rotation of the valve core and the retreat of the valve seat are carried out synchronously, thereby reducing the wear of the valve core and the valve seat when the valve core rotates, and improving the sealing performance and service life of the ball valve.

[0015] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application so that it can be implemented in accordance with the contents of the specification, and to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following is a detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings as follows.

[0016] Based on the detailed description of the specific embodiments of the present application in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 for Figure 1 Enlarged view of point A.

[0020] In the figure: 1. valve body; 2. valve core; 3. lower rotating rod; 4. valve seat; 5. water inlet flange; 6. gear; 7. transmission gear; 8. sealing cover; 9. upper rotating rod; 10. sealing bearing; 11. cavity; 12. water outlet flange; 13. spring; 14. movable groove; 15. sliding rod; 16. eccentric block; 17. rotating rod; 18. bracket; 19. movable cavity. DETAILED DESCRIPTION

[0021] To make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme in the embodiment of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, rather than all of the embodiments. In the following description, specific details such as specific configuration and components are provided only to help fully understand the embodiments of the present application. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, for clarity and brevity, the description of known functions and structures is omitted in the embodiment.

[0022] In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0023] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that there can be two relationships. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0024] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusions.

[0025] See also Figure 1-2The present invention provides a technical solution for a C-type ball valve: 1. A C-type ball valve comprises a valve body 1 and a valve core 2. A cavity 11 is provided inside the valve body 1. Sealing covers 8 are installed at the top and bottom of the valve body 1. The sealing cover 8 at the top of the valve body 1 is rotatably connected to an upper rotating rod 9 through a sealing bearing 10. The sealing cover 8 at the bottom of the valve body 1 is rotatably connected to a lower rotating rod 3 through a sealing bearing 10. The top of the valve core 2 is fixedly connected to the upper rotating rod 9, and the bottom of the valve core 2 is fixedly connected to the lower rotating rod 3. The valve core 2 is located inside the cavity 11. A movable groove 14 is provided on one side of the cavity 11. A valve seat 4 is slidably connected inside the movable groove 14. The valve seat 4 and the movable groove 14 are elastically connected by a spring 13.

[0026] The top and bottom ends of the valve body 1 are fixedly connected with a bracket 18, the bracket 18 is rotatably connected with a rotating rod 17, one end of the rotating rod 17 is fixedly connected with a sector gear 6, the middle parts of the upper rotating rod 9 and the lower rotating rod 3 are fixedly connected with a transmission gear 7, the sector gear 6 is meshed with the transmission gear 7, an active cavity 19 is opened in the side wall of the valve body 1, a sliding rod 15 is slidably connected in the active cavity 19, one end of the sliding rod 15 is fixedly connected to the valve seat 4, the other end of the sliding rod 15 is fixedly connected with a protrusion, the other end of the rotating rod 17 is fixedly connected with an eccentric block 16, the eccentric block 16 is located inside the active cavity 19, and the eccentric block 16 fits with the protrusion.

[0027] In this embodiment, the upper rotating rod 9 and the lower rotating rod 3 respectively drive the sector gear 6 to rotate through the two transmission gears 7 , and the sector gear 6 drives the eccentric block 16 to rotate through the rotating rod 17 .

[0028] A water inlet flange 5 and a water outlet flange 12 are respectively installed on both sides of the valve body 1 , and the water inlet flange 5 is located on the side where the valve seat 4 is located.

[0029] When used specifically:

[0030] ① When the ball valve is opened, the valve core 2 is driven to rotate by the upper rotating rod 9 at the top to open the valve. At this time, the upper rotating rod 9 and the lower rotating rod 3 respectively drive the fan gear 6 to rotate through the two transmission gears 7, and the fan gear 6 drives the eccentric block 16 to rotate through the rotating rod 17, so that the protrusion drives the valve seat 4 to retreat through the sliding rod 15, and the rotation of the valve core 2 and the retreat of the valve seat 4 are synchronous, thereby reducing the wear of the valve core 2 and the valve seat 4 when rotating, and improving the sealing performance and service life of the ball valve;

[0031] ② When the ball valve is closed, the valve core 2 is driven to rotate through the upper rotating rod 9 at the top to open the valve. At this time, the upper rotating rod 9 and the lower rotating rod 3 respectively drive the fan gear 6 to rotate through the two transmission gears 7, and the fan gear 6 drives the eccentric block 16 to rotate through the rotating rod 17. In addition, due to the provision of a spring 13, the valve seat 4 is slowly released, and the valve seat 4 slides toward the direction of the valve core 2. When the spherical surface of the valve core 2 is completely rotated to the water inlet side, the valve seat 4 is completely released and tightly fits the valve core 2 under the action of the spring 13 to complete the sealing. The rotation of the valve core 2 and the pushing of the valve seat 4 are carried out synchronously, thereby reducing the wear of the valve core 2 and the valve seat 4 when the valve core 2 rotates, and improving the sealing performance and service life of the ball valve.

[0032] The above description is only the preferred embodiment of the utility model, which does not limit the protection scope of the utility model. For those skilled in the art, the utility model can be modified and varied in various ways. Any changes, modifications, substitutions, integrations and parameter changes to these embodiments within the spirit and principle of the utility model through conventional substitutions or capable of achieving the same functions without departing from the principles and spirit of the utility model shall fall within the protection scope of the utility model.

Claims

1. A C-type ball valve, characterized in that: The invention comprises a valve body (1) and a valve core (2), wherein a cavity (11) is provided inside the valve body (1), and sealing covers (8) are installed at the top and bottom ends of the valve body (1), and the sealing cover (8) at the top end of the valve body (1) is rotatably connected to an upper rotating rod (9) via a sealing bearing (10), and the sealing cover (8) at the bottom end of the valve body (1) is rotatably connected to a lower rotating rod (3) via a sealing bearing (10), the top end of the valve core (2) is fixedly connected to the upper rotating rod (9), and the bottom end of the valve core (2) is fixedly connected to the lower rotating rod (3), and the valve core (2) is located inside the cavity (11), and a movable groove (14) is provided on one side of the cavity (11), and a valve seat (4) is slidably connected inside the movable groove (14), and the valve seat (4) and the movable groove (14) are elastically connected via a spring (13).

2. A C-type ball valve according to claim 1, characterized in that: The top and bottom ends of the valve body (1) are both fixedly connected to a bracket (18), the bracket (18) is rotatably connected to a rotating rod (17), and one end of the rotating rod (17) is fixedly connected to a sector gear (6).

3. A C-type ball valve as claimed in claim 2, characterized in that: The middle parts of the upper rotating rod (9) and the lower rotating rod (3) are fixedly connected with a transmission gear (7), and the sector gear (6) is meshingly connected with the transmission gear (7).

4. A C-type ball valve as claimed in claim 3, characterized in that: A movable cavity (19) is provided in the side wall of the valve body (1), a sliding rod (15) is slidably connected in the movable cavity (19), one end of the sliding rod (15) is fixedly connected to the valve seat (4), and the other end of the sliding rod (15) is fixedly connected to a protrusion.

5. A C-type ball valve as claimed in claim 4, characterized in that: The other end of the rotating rod (17) is fixedly connected with an eccentric block (16), the eccentric block (16) is located inside the movable cavity (19), and the eccentric block (16) is in contact with the protrusion.

6. A C-type ball valve according to claim 5, characterized in that: A water inlet flange (5) and a water outlet flange (12) are respectively installed on both sides of the valve body (1), and the water inlet flange (5) is located on the side where the valve seat (4) is located.

Images