Rail type ball valve

Abstract

The utility model relates to the technical field of valve bodies, and discloses a rail type ball valve which comprises a valve body, the valve body comprises a valve body shell, a valve body assembly is rotationally arranged in the middle of the valve body shell, a front filter is installed at an opening in one end of the valve body shell, and a threaded pipe connector is welded to an opening in the other end of the valve body shell in a threaded mode. The valve body assembly comprises a valve element rotationally arranged in the valve body shell, an assembling groove is formed in the top end of the valve element, and a pin is fixedly connected into the assembling groove. The prefilter is installed at one end of the valve, media flowing through the valve body are filtered, impurities and particles in the media are removed, it is ensured that the cleanliness of the media entering the valve meets the requirement, the media are prevented from entering the ball valve to affect the sealing performance, and then the problems of valve clamping stagnation, damage and the like are avoided.

Description

Technical Field

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

[0002] A track-type ball valve is a type of ball valve whose ball moves along a specific track during opening and closing. It primarily consists of a valve body, ball, stem, and seat. The ball has a groove in it, into which a pin on the stem head fits. When the stem rotates, the pin drives the ball along the track within the valve body.

[0003] The existing track-type ball valves still have the following problems when in use: Although the track-type ball valve has a certain self-cleaning ability, in actual use, if the medium contains a large amount of impurities, particles or fibers and other substances, they may still enter the ball valve and affect the sealing performance, and even cause the valve to become stuck or damaged. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a track-type ball valve, which solves the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a track-type ball valve, comprising a valve body, the valve body comprising a valve body shell, a valve body assembly being rotatably arranged in the middle of the valve body shell, a pre-filter being installed at an opening at one end of the valve body shell, a threaded pipe connection being threadedly welded at an opening at the other end of the valve body shell, the valve body assembly comprising a valve core rotatably arranged inside the valve body shell, an assembly groove being provided at the top end of the valve core, and a pin being fixedly connected to the assembly groove, a track for the valve core to rotate being provided in the valve body shell, an ultra-high molecular weight polyethylene gasket being slidably connected to the junction of the inner side wall of the valve body shell and the threaded pipe connection, and the ultra-high molecular weight polyethylene gasket being located on the side of the valve core.

[0006] As a further solution of the present invention: the pre-filter includes a filter housing threadedly connected to an opening at one end of the valve body housing, a threaded groove is provided at one end of the annular outer wall of the filter housing, and a filter medium is fixedly connected to the other end of the annular inner wall of the filter housing.

[0007] As a further solution of the present invention: the valve body assembly also includes a valve seat fixedly installed at the upper opening of the valve body shell, a valve stem is rotatably installed in the valve seat, the bottom end of the valve stem is fixedly connected to a pin, a top limit sleeve is fixedly installed on the outer side of the upper end of the valve stem, the top limit sleeve is fastened to the outer side of the valve stem via an upper end locking nut, the locking nut is threadedly connected to the top end of the valve stem, and a handle is fixedly connected to the rear end of the top limit sleeve.

[0008] As a further solution of the present invention: the outer side wall of the upper end of the valve body shell is fixedly connected with a block and a baffle at a right angle, the front end of the block and the baffle is provided with a bottom front protruding block of the top limit sleeve, and the rear end of the block and the baffle is provided with a bottom rear protruding block of the top limit sleeve.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] 1. In the utility model, a pre-filter is installed at one end of the valve to filter the medium flowing through the valve body, remove impurities and particles therein, ensure that the cleanliness of the medium entering the valve meets the requirements, prevent the medium from entering the ball valve and affecting the sealing performance, thereby avoiding problems such as valve jamming and damage.

[0011] 2. In the present invention, the threaded connection between the pre-filter and the valve body shell allows for regular and convenient disassembly to clean and maintain the filter to ensure its filtering effect. In addition, the sealing surface of the valve is provided with an ultra-high molecular weight polyethylene gasket, which has a wear-resistant, corrosion-resistant and self-lubricating coating, which can reduce the impact of impurities on the sealing surface and improve the valve's anti-pollution ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The overall three-dimensional Figure 1 ;

[0013] Figure 2 The overall three-dimensional Figure 2 ;

[0014] Figure 3 A three-dimensional diagram of a valve body of a part of the present invention;

[0015] Figure 4 This is a three-dimensional view of another part of the valve body of the present invention.

[0016] In the figure: 1. Valve body; 2. Pre-filter; 11. Valve body shell; 12. Threaded pipe connection; 13. Ultra-high molecular weight polyethylene gasket; 14. Stop block; 15. Block plate; 16. Valve seat; 17. Valve core; 18. Valve stem; 19. Top limit sleeve; 110. Lock nut; 111. Handle; 112. Pin; 113. Assembly groove; 21. Filter shell; 22. Filter medium. DETAILED DESCRIPTION

[0017] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0018] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0020] See also Figures 1 to 4 In the embodiment of the present utility model, the track type ball valve includes a valve body 1, which includes a valve body shell 11, a valve body assembly is rotatably arranged in the middle of the valve body shell 11, a pre-filter 2 is installed at the opening of one end of the valve body shell 11, and a threaded pipe connection 12 is threadedly welded at the opening of the other end of the valve body shell 11. The valve body assembly includes a valve core 17 rotatably arranged inside the valve body shell 11, a mounting groove 113 is provided at the top of the valve core 17, and a pin 112 is fixedly connected in the mounting groove 113, and a track for the valve core 17 to rotate is provided in the valve body shell 11. The whole is filtered by installing a pre-filter 2 at one end of the valve to remove impurities and particles therein, thereby ensuring that the cleanliness of the medium entering the valve meets the requirements, preventing the medium from entering the ball valve and affecting the sealing performance, thereby avoiding problems such as valve jamming and damage.

[0021] The pre-filter 2 includes a filter housing 21 threadedly connected to the opening at one end of the valve body housing 11, a threaded groove is provided at one end of the annular outer wall of the filter housing 21, and a filter medium 22 is fixedly connected to the other end of the annular inner wall of the filter housing 21. An ultra-high molecular weight polyethylene gasket 13 is slidably connected to the junction of the inner wall of the valve body housing 11 and the threaded pipe connection 12. The ultra-high molecular weight polyethylene gasket 13 is located on the side of the valve core 17. The pre-filter 2 is threadedly connected to the valve body housing 11, and can be disassembled regularly and conveniently to clean and maintain the filter to ensure its filtering effect. In addition, the sealing surface of the valve is provided with an ultra-high molecular weight polyethylene gasket 13, which has a wear-resistant, corrosion-resistant and self-lubricating coating, which can reduce the influence of impurities on the sealing surface and improve the valve's anti-pollution ability.

[0022] The valve body assembly also includes a valve seat 16 fixedly mounted at the upper opening of the valve body shell 11, and a valve stem 18 is rotatably mounted in the valve seat 16. The bottom end of the valve stem 18 is fixedly connected to a pin 112, and a top limit sleeve 19 is fixedly mounted on the outer side of the upper end of the valve stem 18. The top limit sleeve 19 is fastened to the outer side of the valve stem 18 via an upper end locking nut 110. The locking nut 110 is threadedly connected to the top of the valve stem 18. The rear end of the top limit sleeve 19 is fixedly connected to a handle 111. The handle 111 can be gripped to drive the top limit sleeve 19 to rotate, and then the pin 112 drives the valve core 17 to rotate along the track through the valve stem 18.

[0023] The outer side wall of the upper end of the valve body shell 11 is fixedly connected with a stopper 14 and a baffle 15 at a right angle. The front end of the stopper 14 and the baffle 15 is provided with a front protruding block at the bottom of the top limit sleeve 19, and the rear end of the stopper 14 and the baffle 15 is provided with a rear protruding block at the bottom of the top limit sleeve 19. The stopper 14 and the baffle 15 play a role in limiting the rotation angle of the top limit sleeve 19, that is, limiting the rotation angle of the valve core 17 to prevent it from rotating excessively.

[0024] The working principle of the present utility model is: when the valve is operated to open, the valve stem 18 rotates, and the valve core 17 of the ball is driven to rotate through the pin 112. Since a through groove is provided in the middle of the valve core 17 of the ball, when the through groove is arranged horizontally relative to the valve body shell 11, the ball valve is arranged in a connected state, so that the valve channel is fully opened. At this time, the valve stem 18 is rotated, and its rotation direction is opposite to that when the valve is opened before. When the through groove is arranged vertically relative to the valve body shell 11, the valve body shell 11 closes the front and rear openings of the through groove, and the entire valve is arranged in a closed state to achieve sealing. The entire valve is provided with a pre-filter 2 installed at one end of the valve to filter the medium flowing through the valve body 1 to remove impurities and particles therein, thereby ensuring that the cleanliness of the medium entering the valve meets the requirements, preventing the medium from entering the ball valve and affecting the sealing performance, thereby avoiding problems such as valve jamming and damage.

[0025] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A track-type ball valve, comprising a valve body (1), wherein the valve body (1) comprises a valve body shell (11), wherein a valve body assembly is rotatably arranged in the middle of the valve body shell (11); Its characteristics are: A pre-filter (2) is installed at an opening at one end of the valve body shell (11), and a threaded pipe connection (12) is threadedly welded at an opening at the other end of the valve body shell (11); The valve body assembly comprises a valve core (17) rotatably arranged inside the valve body shell (11), a mounting groove (113) is provided at the top end of the valve core (17), a pin (112) is fixedly connected in the mounting groove (113), and a track for the valve core (17) to rotate is provided in the valve body shell (11); An ultra-high molecular weight polyethylene gasket (13) is slidably connected at the junction of the inner side wall of the valve body shell (11) and the threaded pipe joint (12), and the ultra-high molecular weight polyethylene gasket (13) is located on the side of the valve core (17).

2. The track-type ball valve according to claim 1, characterized in that: The pre-filter (2) comprises a filter housing (21) threadedly connected to an opening at one end of the valve body housing (11).

3. The track-type ball valve according to claim 2, characterized in that: A threaded groove is provided at one end of the annular outer side wall of the filter housing (21), and a filter medium (22) is fixedly connected to the other end of the annular inner side wall of the filter housing (21).

4. The track-type ball valve according to claim 1, characterized in that: The valve body assembly further comprises a valve seat (16) fixedly mounted at the upper end opening of the valve body housing (11), with a valve stem (18) rotatably mounted in the valve seat (16).

5. The track-type ball valve according to claim 4, characterized in that: The bottom end of the valve stem (18) is fixedly connected to a pin (112), and a top limiting sleeve (19) is fixedly installed on the outer side of the upper end of the valve stem (18).

6. The track-type ball valve according to claim 5, characterized in that: The top limiting sleeve (19) is fastened to the outside of the valve stem (18) via an upper locking nut (110), the locking nut (110) is threadedly connected to the top of the valve stem (18), and the rear end of the top limiting sleeve (19) is fixedly connected to a handle (111).

7. The track-type ball valve according to claim 1, characterized in that: The outer side wall of the upper end of the valve body shell (11) is fixedly connected with a stopper (14) and a stopper plate (15) at a right angle, and the front ends of the stopper (14) and the stopper plate (15) are provided with a bottom front protruding block of the top limit sleeve (19), and the rear ends of the stopper (14) and the stopper plate (15) are provided with a bottom rear protruding block of the top limit sleeve (19).

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