Plunger type sampling valve
A sampling valve, plunger type technology, applied in the field of plunger type sampling valve, can solve the problem of not being able to prevent misoperation well
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[0012] As shown in the above drawings, the plunger type sampling valve provided by the present invention includes a valve body 1, a valve stem 2, a plunger 3 and a handwheel 4, the valve stem 2 and plunger 3 are arranged in the valve body 1, and The lower end of the valve stem 2 is connected to the plunger 3, the valve body 1 is provided with a flow channel 5, and one side of the valve body 1 is provided with a sampling tube 6 which can communicate with the flow channel 5, and the plunger 3 can block the sampling tube 6, and the plunger 3 is set with a plurality of sealing rings 7, which is characterized in that: the upper end of the valve stem 2 is provided with a first polygonal groove 8, and the first polygonal groove 8 is provided with The first polygonal linkage piece 9 that cooperates with it, the first polygonal linkage piece 9 upper end is provided with the second polygonal linkage piece 10 that width is smaller than the first polygonal linkage piece 9, and the second p...
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Abstract
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