Unloading ball valve
A ball valve and valve body technology, applied in the field of ball valves, can solve the problems of low safety and wrong passage connection, and achieve the effects of high safety, good sealing and reducing the possibility of misoperation
Pending Publication Date: 2019-01-29
NINGBO TIANXIANG XINHUA HYDRAULIC CO LTD
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AI Technical Summary
Problems solved by technology
[0003] The existing unloading ball valve only needs to adjust the switch of a control valve to control the flow direction of the two passages. However, there is a problem of low safety in this way, and workers may adjust the switch of the control valve under the condition of misoperation. , resulting in path connection errors
Method used
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Embodiment Construction
[0030] The present invention will be further described below in conjunction with the accompanying drawings. For the convenience of explanation, the following "clockwise" and "counterclockwise" are all related to the attached image 3 The direction described is the same.
[0031] An unloading ball valve, such as figure 1 , figure 2 and Figure 4As shown, the valve body 1 is included, the valve body 1 is provided with an oil inlet 11, a working port 12 opposite to the oil inlet 11, and an unloading port 13, and the valve body 1 is internally threaded with a first joint 14, The second joint 15 and the third joint 16, the oil inlet 11 is located in the first joint 14, the working port 12 is located in the second joint 15, the unloading port 13 is located in the third joint 16, the oil inlet 11 and the working port 12 A first flow channel 2 is opened between them, and a first valve chamber 21 is provided at the end of the first flow channel 2 close to the oil inlet 11, and a f...
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The invention discloses an unloading ball valve. The unloading ball valve comprises a valve body, an oil inlet, a working port and an unloading port are formed in the valve body, a first flow channelis formed between the oil inlet and the working port, a first valve ball is arranged in the first flow channel, a second flow channel is formed between the first flow channel and the unloading port, and a second valve ball is arranged in the second flow channel; the valve body is provided with a first communication hole and a second communication hole, a first valve rod is arranged on the first valve ball, a second valve rod is arranged on the second valve ball, the first valve rod is provided with a first positioning plate, and the second valve rod is provided with a second positioning plate;a second arc-shaped convex part and a second arc-shaped groove are arranged on the second positioning plate, a first arc-shaped groove and a first arc-shaped convex part are formed in the first positioning plate. The unloading ball valve has the following advantages and effects that a novel mechanical structure is utilized, the first positioning plate and the second positioning plate are matched,and the safety is high; an O-shaped ring, a gasket and a check ring are arranged at multiple positions, and the sealing performance is high; and the handle is used for operation, so that the labor issaved.
Description
technical field [0001] The invention relates to the technical field of ball valves, in particular to an unloading ball valve. Background technique [0002] The ball valve is a valve whose opening and closing parts are driven by the valve stem and rotate around the axis of the ball valve. In my country, ball valves are widely used in petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmaceuticals, water conservancy, electric power, municipal, steel and other industries, and play a pivotal role in the national economy. The body is a sphere with a circular through hole or pipe passing through its axis. The ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. It only needs to rotate 90 degrees and a small rotational torque to close tightly. Ball valves are most suitable for on-off and shut-off valves. The unloading ball valve is a kind of ball valve, which can play the role of unloading under...
Claims
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IPC IPC(8): F15B13/02F16K5/06
CPCF15B13/02F16K5/06
Inventor 杨吉军陈志明
Owner NINGBO TIANXIANG XINHUA HYDRAULIC CO LTD