Valve device for stop valve

Abstract

The utility model provides a valve device for a cut-off valve, which comprises a valve body of the cut-off valve, the valve body is provided with an air source channel, the air source channel is provided with a mounting hole, the mounting hole is perpendicular to the air source channel, the mounting hole is provided with a mounting seat, the lower end of the mounting seat is provided with a vent hole, and the vent hole is communicated with the air source channel. A movable valve rod is movably mounted in the middle of the mounting seat, an air valve element is mounted at the lower end of the movable valve rod, and a valve seat matched with the air valve element is arranged at the lower end of the mounting hole. The stop valve has the functions of guiding air, opening or closing the valve and sealing when being applied to the stop valve, is more suitable for rapid assembly of an automatic production line, and improves good leakproofness of the valve.

Description

Technical Field

[0001] The utility model relates to the technical field of cut-off valves, and in particular to an integrated shell design structure device for a cut-off valve suitable for rapid assembly on an automated production line and for improving the airtightness of the valve. Background Art

[0002] Various types of combustible gases have become an indispensable and important part of people's lives. They have brought a lot of convenience to people's lives; however, the use of gas has also brought some potential safety hazards to people's lives; the shut-off valve has a wide range of uses, mainly used to cut off gas and reduce safety hazards. The shut-off valve is a kind of actuator in the automation system, which is driven by the solenoid valve actuator.

[0003] The moving valve stem then transmits thrust to the rubber valve seat to form the valve closing and opening functions. The sealing structure of the moving valve stem of traditional valves mostly adopts a split structure, and the sealing cover and the sealing ring are fixed with a screw thread structure. The thread structure of the device is complex, the production process is cumbersome, and there are many interfaces, which are prone to leakage or low qualified rate in production. Utility Model Content

[0004] The utility model aims to provide a valve device for a shut-off valve, which can be used in the shut-off valve to guide air, open or close the valve and seal, realize an integrated valve body structure, and a plurality of sealing rings are integrated and installed on one accessory, thereby reducing the risk of air leakage at the threaded interface, improving the installation speed and the production qualification rate, etc.; it solves the problems that most of the sealing structures of traditional valves for the moving valve stem adopt a split structure, the sealing cover and the sealing ring are fixed with a threaded structure, the threaded structure of the device is complex, the production process is cumbersome, there are many interfaces, it is easy to cause air leakage or the qualification rate in production is low, etc.

[0005] The technical solution of the utility model is as follows:

[0006] A valve device for a cut-off valve comprises a valve body of the cut-off valve, the valve body being provided with an air source channel, the air source channel being provided with a mounting hole, the mounting hole being perpendicular to the air source channel, a mounting seat being mounted on the mounting hole, a vent being provided at the lower end of the mounting seat, a movable valve stem being movably mounted in the middle of the mounting seat, an air valve core being mounted at the lower end of the movable valve stem, and a rubber valve seat matching the air valve core being provided at the lower end of the mounting hole.

[0007] Among them, the upper end of the mounting hole is provided with a screw thread, the mounting seat is provided with a screw thread, the mounting seat is fastened to the mounting hole through the screw thread, the upper end of the mounting seat is provided with a positioning part, the positioning part and the valve body connecting surface are provided with an O-ring 1, and an O-ring 2 is provided between the lower end of the mounting seat and the mounting hole.

[0008] Wherein, a sealing hole is arranged in the upper end of the mounting seat, and two sealing rings are installed on the sealing hole.

[0009] Wherein, a sealing cover is also arranged above the sealing hole, and a sealing cover riveting opening is arranged at the upper end of the sealing hole.

[0010] Wherein, a clamping seat is arranged at the lower end of the rubber valve seat, and a spring is arranged at the lower end of the clamping seat.

[0011] The utility model has the following beneficial effects:

[0012] The utility model provides a mounting seat installed on the gas source channel of the valve body, and the mounting seat is provided with a vent hole to guide the gas in the gas source channel to pass through the mounting seat. The gas source channel is opened or closed by arranging a movable valve stem and a gas valve core on the mounting seat for use in conjunction with a rubber valve seat. An O-ring is arranged between the mounting seat and the rubber valve seat to improve the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the installation structure of the mounting seat and the movable valve stem of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the mounting seat of the utility model;

[0016] Figure 4 This is a schematic diagram of the valve body structure of the utility model.

[0017] The reference numerals in the figure are as follows:

[0018] 1-valve body; 2-air source channel; 3-mounting hole; 4-mounting seat; 5-vent hole; 6-movable valve stem; 7-air valve core; 8-rubber valve seat; 9-positioning part; 10-O-ring one; 11-O-ring two; 12-sealing hole; 13-sealing ring; 14-sealing cover; 15-seat; 16-spring; 17-rivet press port of sealing cover. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0020] like Figure 1-4As shown, a valve device for a cut-off valve comprises a valve body 1 of the cut-off valve, the valve body 1 is provided with an air source channel 2, the air source channel 2 is provided as an air source channel 2 with a Z-shaped corner, a mounting hole 3 is provided on the corner of the air source channel 2, the mounting hole 3 is perpendicular to the air source channel 2, a mounting seat 4 is installed on the mounting hole 3, a vent hole 5 is provided at the lower end of the mounting seat 4, a movable valve stem 6 is movably installed in the middle of the mounting seat 4, an air valve core 7 is installed at the lower end of the movable valve stem 6, the air valve core 7 is a rubber part, and a rubber valve seat 8 matching the air valve core 7 is provided at the lower end of the mounting hole 3.

[0021] Furthermore, a screw thread is provided at the upper end of the mounting hole 3, and a screw thread is provided at the mounting seat 4. The mounting seat 4 is fastened to the mounting hole 3 through the screw thread. A positioning portion 9 is provided at the upper end of the mounting seat 4, and an O-ring 10 is provided at the connecting surface between the positioning portion 9 and the valve body 1. An O-ring 2 11 is provided between the lower end of the mounting seat 4 and the mounting hole 3. The O-ring is provided to prevent air leakage at the connection between the mounting seat 4 and the valve body 1.

[0022] Furthermore, a sealing hole 12 is provided in the upper end of the mounting seat 4, and a sealing ring 13 is installed on the sealing hole 12; a sealing cover 14 is also provided above the sealing hole 12; a sealing cover riveting opening 17 is provided at the upper end of the sealing hole 12, and pressure is applied around the riveted opening by positioning protrusions of a fixed mold to reduce the inner circle of the sealing cover, thereby realizing rapid and firm fixation of the sealing cover; the sealing ring 13 is provided to prevent air leakage between the movable valve stem 6 and the mounting seat 4.

[0023] Furthermore, a holder 15 is provided at the lower end of the rubber valve seat 8, and a spring 16 is provided on the holder 15. When the valve closing button is lifted or the solenoid valve actuator is energized to drive the movable valve stem to move upward, the movable valve stem 6 moves upward to drive the air valve core 7 to move up to the mounting seat 4. The holder 15 is provided with a spring 16 whose upward thrust helps the rubber valve seat 15 to move upward and increase the airtightness of the valve.

[0024] Working principle of this utility model:

[0025] The utility model valve device, the mounting seat 4 is mounted on the mounting hole 3 of the valve body 1, the movable valve stem 6 is mounted in the mounting seat 4, the lower end of the movable valve stem 6 is mounted with an air valve core 7; the lower end of the mounting hole 3 of the valve body 1 is mounted with a rubber valve seat 8; the upper end of the movable valve stem 6 is connected to the valve closing button; when the valve closing button is pressed, the movable valve stem 6 moves downward to drive the air valve core 7 to move downward into the rubber valve seat 8, at this time, the vent hole 5 in the mounting seat 4 is connected, the air source enters from the air source channel 2 and exits through the vent hole 5 in the mounting seat 4, and the valve is opened for ventilation; when the valve closing button is lifted or the solenoid valve actuator is energized to drive the movable valve stem to move upward, the movable valve stem 6 moves upward to drive the air valve core 7 to move upward to the mounting seat 4, and the seat 15 is provided with a spring 16 to push the valve seat 15 upward and increase the airtightness of the valve, at this time, the air valve core 7 blocks the vent hole 5 in the mounting seat 4, the air source cannot pass through the mounting seat 4, the valve is closed, and the air source is cut off and ventilation is impossible.

[0026] In the description of the utility model, it is necessary to understand that the terms "upper end", "lower end", "inner", "upper part", "lower part", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the utility model.

[0027] In the utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0028] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A valve device for a cut-off valve, comprising a valve body (1) of the cut-off valve, wherein the valve body (1) is provided with an air source channel (2), characterized in that: The gas source channel (2) is provided with a mounting hole (3), the mounting hole (3) being perpendicular to the gas source channel (2), a mounting seat (4) being mounted on the mounting hole (3), a vent hole (5) being disposed at the lower end of the mounting seat (4), a movable valve stem (6) being movably mounted in the middle of the mounting seat (4), a gas valve core (7) being mounted at the lower end of the movable valve stem (6), and a rubber valve seat (8) matching the gas valve core (7) being disposed at the lower end of the mounting hole (3).

2. A valve device for a cut-off valve according to claim 1, characterized in that: The upper end of the mounting hole (3) is provided with a screw thread, the mounting seat (4) is provided with a screw thread, the mounting seat (4) is fastened to the mounting hole (3) by the screw thread, the upper end of the mounting seat (4) is provided with a positioning portion (9), the connection surface between the positioning portion (9) and the valve body (1) is provided with an O-ring 1 (10), and an O-ring 2 (11) is provided between the lower end of the mounting seat (4) and the mounting hole (3).

3. A valve device for a cut-off valve according to claim 1, characterized in that: A sealing hole (12) is provided in the upper end of the mounting seat (4), and two sealing rings (13) are installed on the sealing hole (12).

4. A valve device for a cut-off valve according to claim 3, characterized in that: A sealing cover (14) is also provided above the sealing hole (12), and a sealing cover riveting opening (17) is provided at the upper end of the sealing hole (12).

5. A valve device for a cut-off valve according to claim 1, characterized in that: A clamping seat (15) is provided at the lower end of the rubber valve seat (8), and a spring (16) is provided at the lower end of the clamping seat (15).

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