CN218152438U - Top-mounted conical spherical valve - Google Patents

Abstract

The utility model relates to the technical field of valves, in particular to facial make-up circular cone centre of sphere valve. The device is characterized in that the upper portion of a shell is opened, a conical valve core is installed inside the shell through the opening in the upper portion of the shell, the side face of the conical valve core is designed into a conical surface, a through hole is transversely formed in the conical valve core and can be communicated with the inlet end and the outlet end of the shell, a guide cylinder is arranged at the upper end of the conical valve core, and a steering groove is formed in the upper end face of the guide cylinder. The utility model discloses a need not pull down the valve wholly when changing case and seal assembly, only need to open from upper portion and just can change case and seal assembly, for the maintenance of ball valve and overhauld and brought the convenience, sealed effect is reliable, increase of service life.

Description

Top loading conical spherical center valve

Technical field:

The utility model relates to the technical field of valves, in particular to a top-mounted conical spherical center valve.

Background technique:

The more commonly used ball valves today are basically spherical valve cores. When disassembling and assembling the valve cores, they are installed from the sides of the openings at both ends. In actual use, according to the process and safety requirements, many connecting pipelines are made of steel pipes. The hard link form. After using for a period of time, due to the wear of parts caused by frequent switching and the natural aging of the seals, the ball valve will not be closed tightly or the switch will not be in place. Since the two sides of the ball valve are rigidly connected by steel pipes, the ball valve assembly must be replaced or It is very time-consuming and laborious to repair and replace the valve core, which brings a lot of inconvenience to the operation and maintenance of the equipment or system, thus affecting the normal use.

Utility model content:

The technical problem to be solved by the utility model is to provide a top-mounted conical spherical center valve. This device realizes that when replacing the valve core and the sealing assembly, it is not necessary to disassemble the valve as a whole, and the valve core and seal can be replaced only by opening from the top. The assembly brings convenience to the maintenance and overhaul of the ball valve, the sealing effect is reliable, and the service life is prolonged. The invention overcomes the time-consuming, labor-intensive and inconvenient deficiencies that the existing spherical valve core needs to be dismantled when disassembling the valve core.

The technical solution adopted by the utility model is: a top-mounted conical spherical center valve, including a shell, the two sides of the shell are respectively provided with an inlet end and an outlet end, and the inlet end and the outlet end of the shell are respectively threaded to connect two steel pipes; The upper part of the shell is open, and the conical spool is installed inside the shell through the upper opening of the shell. The side of the conical spool is designed as a conical surface. At the outlet end, a guide cylinder is provided on the upper end of the conical valve core, and a steering groove is provided on the upper end surface of the guide cylinder;

The open end of the upper part of the housing is sealed and connected to the upper cover, and a compression spring is installed between the upper cover and the conical valve core, and the compression spring is set on the guide cylinder of the conical spool, and the lower end of the rotating rod passes through the upper cover and is inserted into the conical spool The rotating rod can drive the conical valve core to rotate, the pressure cap penetrates the upper end of the rotating rod and connects with the inner wall of the upper cover, and the lower end of the pressing cap presses on the stepped surface of the outer wall of the rotating rod;

The two sides of the conical valve core are respectively equipped with special-shaped sealing rings, which match the outer conical surface of the conical valve core, and the outer sides of the special-shaped sealing rings on both sides are provided with sealing ring thread seats, and the two sealing ring thread seats are respectively The threads are connected to the inner wall of the inlet end and the inner wall of the outlet end of the casing; the outer sides of the two steel pipes are respectively sealed and threaded to connect with lock nuts.

Further, the upper opening end of the housing is screwed to the upper cover, and the upper cover and the upper opening end of the housing are sealed by an O-ring I.

Further, a sealing ring is installed on the inner wall of the upper cover, and the inner wall of the upper cover and the rotating rod are sealed by the sealing ring.

Further, a limit step is provided inside the lock nut, and an O-ring II is arranged on the limit step, and the lock nut, the outer wall of the steel pipe, and the inlet or outlet end face of the casing are sealed by the O-ring II.

The beneficial effects of the utility model are:

1. When replacing the valve core and sealing components, it is not necessary to dismantle the valve as a whole, and the valve core and sealing components can be replaced only by opening from the top, which brings convenience to the maintenance and inspection of the ball valve;

2. The spool is conical, and the spool is more tightly sealed with the valve seat under the pressure of the spring. In the case of gradual wear during use, the spool moves downward through the compression spring pressure to compensate for the wear and ensure The sealing effect is reliable and the service life is prolonged;

3. The lock nuts on both sides ensure that the ball valve body needs to be positioned at a certain angle and the thread is not completely tightened to position the body. At the same time, it depends on the sealing ring between the ball valve body and the lock nut. Secondary sealing is achieved at the threaded connection.

Description of drawings:

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Fig. 1 is the split structure diagram of the utility model.

Fig. 2 is a schematic cross-sectional view of the utility model.

Fig. 3 is a schematic structural view of the cone valve core.

FIG. 4 is a top view of FIG. 3 .

Fig. 5 is a schematic structural diagram of a locking nut.

FIG. 6 is a top view of FIG. 5 .

Fig. 7 is a schematic diagram of the structure of the special-shaped sealing ring.

Figure 8 is a side view of the special-shaped sealing ring.

detailed description:

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, and Fig. 8, a top-mounted conical spherical center valve includes a shell 10, and inlet ports are respectively provided on both sides of the shell 10. and the outlet end, the inlet end and the outlet end of the housing 10 are threadedly connected to two steel pipes 13 respectively; the upper opening of the housing 10, the conical spool 11 is installed inside the housing 10 through the upper opening of the housing 10, the conical spool 11 The side is designed as a conical surface, and the conical spool 11 is horizontally provided with a through hole 14. The through hole 14 can communicate with the inlet and outlet ends of the housing 10. The upper end of the conical spool 11 is provided with a guide cylinder, and the upper end surface of the guide cylinder is Provided with a steering slot 15;

The upper opening end of the housing 10 is sealed and connected to the upper cover 3, and a compression spring 12 is installed between the upper cover 3 and the conical valve core 11. Insert the turning groove 15 of the conical valve core 11 through the upper cover 3, the rotating rod 5 can drive the conical valve core 11 to rotate, the pressing cap 1 penetrates the upper end of the rotating rod 5 and is connected with the inner wall of the upper cover 3, and the lower end of the pressing cap 1 presses On the stepped surface of the outer wall of the rotating rod 5;

The two sides of the conical spool 11 are respectively equipped with special-shaped sealing rings 9, the special-shaped sealing rings 9 are matched with the outer conical surface of the conical spool 11, and the outer sides of the special-shaped sealing rings 9 on both sides are all provided with sealing ring threaded seats 8. Two sealing ring threaded seats 8 are threadedly connected to the inner wall of the inlet end and the inner wall of the outlet end of the housing 10 respectively; the outer sides of the two steel pipes 13 are respectively sealed and threaded to the locking nut 6 .

The upper open end of the housing 10 is screwed to the upper cover 3 , and the upper cover 3 and the upper opening end of the housing 10 are sealed by an O-ring I4 .

A sealing ring 2 is installed on the inner wall of the upper cover 3 , and the inner wall of the upper cover 3 and the rotating rod 5 are sealed by the sealing ring 2 .

The inner side of the lock nut 6 is provided with a limit step 16, and an O-shaped sealing ring II7 is arranged on the limit step 16, and the O-shaped seal ring II7 is passed between the lock nut 6, the outer wall of the steel pipe 13, and the inlet end face or the outlet end face of the housing 10. seal.

When in use, first screw the sealing ring threaded seat 8 from both sides, so that a sealed space is formed between the front end of the sealing ring threaded seat 8 and the housing 10, and the special-shaped sealing ring 9 on both sides is loaded from the upper part of the housing 10, and the sealing ring is inserted from the housing 10. The upper part is sequentially loaded into the cone-shaped valve core 11, loaded with the compression spring 12, and loaded into the rotating rod 5, so that the lower end of the rotating rod 5 is inserted into the upper steering groove 15 of the cone-shaped valve core 11, loaded with the O-ring I4, and screwed into the upper part. Cover 3, put the sealing ring 2 in the upper cover 3, screw into the pressure cap 1, and the upper part is assembled. The special-shaped sealing ring 9 realizes the sealing between the conical valve core 11 and the two ends of the housing 10 . Screw the lock nut 6 and the O-ring Ⅱ7 into the steel pipe 13 from the side first, screw the steel pipe 13 into both sides of the valve, and lock the lock nut 6 after the valve installation angle is determined, and the O-ring Ⅱ7 is on the limit step 16 is squeezed and deformed to complete the secondary sealing between the steel pipe 13 and the housing 10 .

The conical valve core 11 and special-shaped sealing ring 9 of the utility model are loaded from the upper part of the housing, and the sealing ring thread seat 8 is screwed in from both sides of the housing to realize the connection between the special-shaped sealing ring 9 and the conical valve core 11 and the housing 10. Sealing, the compression spring 12 continuously provides downward pressure to the cone-shaped valve core 11 on the upper part of the cone-shaped valve core 11, thereby ensuring the compression degree of the cone-shaped valve core 11. Compression spring 12 top is loam cake 3, and rotating rod 5, pressure cap 1, seal ring 2 are all installed on loam cake 3, form control spool operation and seal housing and external space. The upper end of the cone-shaped spool 11 guides the cylinder as a spring base to ensure that the compression spring 12 does not shift during use.

It can be understood that the above specific description of the utility model is only used to illustrate the utility model and is not limited to the technical solutions described in the embodiments of the utility model. Those of ordinary skill in the art should understand that the utility model can still be Modifications or equivalent replacements are carried out to achieve the same technical effect; as long as the needs of use are met, they are all within the protection scope of the present utility model.

Claims (4)

1. A top-mounted conical spherical center valve, including a housing (10), the two sides of the housing (10) are respectively provided with an inlet end and an outlet end, and the inlet end and the outlet end of the housing (10) are respectively threaded to connect two steel pipes (13); it is characterized in that: the upper opening of the housing (10), the conical spool (11) is installed inside the housing (10) through the upper opening of the housing (10), and the side of the conical spool (11) is designed as The conical surface, the conical spool (11) has a through hole (14) horizontally, the through hole (14) can communicate with the inlet and outlet ends of the housing (10), and the upper end of the conical spool (11) is provided with a guide cylinder , a steering groove (15) is provided on the upper end surface of the guide cylinder; The upper opening end of the housing (10) is sealed and connected to the upper cover (3), and a compression spring (12) is installed between the upper cover (3) and the cone valve core (11), and the compression spring (12) is set on the cone valve On the guide cylinder of the core (11), the lower end of the rotating rod (5) passes through the loam cake (3) and inserts the turning groove (15) of the conical spool (11), and the rotating rod (5) can drive the conical spool (11) ) is rotated, the pressing cap (1) penetrates the upper end of the rotating rod (5) and is connected with the inner wall of the upper cover (3), and the lower end of the pressing cap (1) is pressed on the outer wall step surface of the rotating rod (5); The two sides of the conical spool (11) are respectively equipped with special-shaped sealing rings (9), and the special-shaped sealing rings (9) match the outer tapered surfaces of the conical spool (11), and the outer sides of the special-shaped sealing rings (9) on both sides Both are provided with sealing ring threaded seats (8), and the two sealing ring threaded seats (8) are threadedly connected to the inner wall of the inlet end and the inner wall of the outlet end of the housing (10); the outer sides of the two steel pipes (13) are respectively sealed Attach the locknut (6). 2. The top-mounted conical spherical center valve according to claim 1, characterized in that: the upper opening end of the housing (10) is threadedly connected to the upper cover (3), and the upper cover (3) is connected to the upper opening of the housing (10) The ends are sealed by O-ring I (4). 3. The top-mounted conical spherical center valve according to claim 1, characterized in that: a sealing ring (2) is installed on the inner wall of the upper cover (3), and a sealing ring (2) is installed between the inner wall of the upper cover (3) and the rotating rod (5). It is sealed by the sealing ring (2). 4. The top-mounted conical spherical center valve according to claim 1, characterized in that: a limit step (16) is provided inside the lock nut (6), and an O-shaped sealing ring II ( 7), between the lock nut (6), the outer wall of the steel pipe (13), and the inlet end face or the outlet end face of the housing (10) is sealed by an O-ring II (7).

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