Elastic wedge-caulking type flat gate valve

A flat gate valve, wedge type technology, applied in the direction of sliding valve, valve device, engine components, etc., can solve the wear of the sealing surface of the gate and the sealing surface of the valve seat, affect the sealing performance and service life of the product, and cannot be disconnected in time, etc. problems, to achieve the effect of reliable sealing performance, long service life and light opening and closing

CN110107707APending Publication Date: 2019-08-09ZHEJIANG JINPU IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-08-09

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Abstract

The invention relates to an elastic wedge-caulking type flat gate valve. The elastic wedge-caulking type flat gate valve comprises a valve body, a valve seat, a valve cover, a valve rod and gate plates, the gate plates are composed of a main gate plate and an auxiliary gate plate, the main gate plate and the auxiliary gate plate are in contact with each other through inclined surfaces in a cooperating mode, a limiting plate fixedly connected with the auxiliary gate plate is arranged above the main gate plate, a positioning pile is arranged at the bottom of an inner cavity of the valve body, anelastic separation device is arranged between the main gate plate and the auxiliary gate plate mainly, the elastic separation device adopts a hook-shaped spring to be arranged between the main gate plate and the auxiliary gate plate, one end of the hook-shaped spring is pressed into a hook groove formed in one side of the inclined surface of the main gate plate, the other end of the hook-shaped spring penetrates through the auxiliary gate plate, and is fixedly arranged on a mounting inclined plane manufactured on one side of a sealing surface of the auxiliary gate plate through a nut. Friction-free opening and closing between the sealing surfaces of the two sides of the gate plates and the sealing surface of the valve seat are achieved, and the advantages that opening and closing are light, the sealing performance is reliable, the service life is long and the like are achieved.
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Description

technical field

[0001] The invention belongs to the field of valves, in particular to a wedge-tight flat gate valve. Background technique

[0002] The wedge-tight slab gate valve is generally composed of a main gate and an auxiliary gate. The main gate and the auxiliary gate adopt a slope or a K-shaped slope to cooperate with each other. The main gate and the auxiliary gate are installed in the gate frame. , the main ram rises and separates from the inclined surface of the auxiliary ram, and then pulls the auxiliary ram to lift together. When the auxiliary ram is in place, it is wedged tightly by the inclined surface of the main ram and is tightly matched with the valve seat to reduce the opening and closing. The wear between the gate sealing surface and the valve seat sealing surface during the process. Its main disadvantage is that when the gate valve is closed for a long time, mutual adhesion is likely to occur between the slopes of the main gate and the auxiliary gate, ...

Examples

Embodiment Construction

[0010] Such as figure 1 The elastic wedge-tight slab gate valve shown includes a valve body 1, a valve seat 2, a gate plate, a valve stem 8, and a valve cover 9. The gate plate is composed of a main gate plate 4 and an auxiliary gate plate 3. The main gate plate 4 and the auxiliary gate plate The gates 3 are in contact with each other using inclined surfaces. The center of the upper end of the main gate 4 is connected to the lower end of the valve stem 8. The main gate 4 is fixedly connected to the axial direction of the valve stem 8, and radially movable relative to the valve stem 8. A limit plate 11 fixedly connected to the auxiliary ram 3 is provided above the main ram 4, and a limit adjusting screw 10 is provided on the limit plate 11, and the limit adjusting screw 10 axially adjusts the main ram 4 and the auxiliary ram 3 The radial eccentric movement distance between them, the axial adjustment mentioned here refers to the adjustment along the direction of the centerline o...