Mechanical switch valve oil-well pump and oil pumping technology thereof
A technology of opening and closing valve and oil pump, which is used in mechanical equipment, liquid variable capacity machinery, pumps, etc., can solve the problems of reducing the fullness of the pump cavity, no sand control groove, and increased development cost, and achieves the effect of avoiding air lock.
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[0029] The mechanical opening and closing valve oil well pump that the present invention relates to is as figure 1 As shown, it is mainly composed of a pump barrel 18, a valve stem 9 inside the pump barrel 18, and a plunger body provided with the lower end of the valve stem 9. The plunger body divides the inside of the pump barrel 18 into an upper chamber 13 and a lower chamber. Chamber 17.
[0030] The plunger body includes a hard plunger body 15 and a soft plunger body 16 .
[0031] The hard plunger body 15 is arranged on the upper part of the soft plunger body 16 .
[0032] A plunger oil outlet valve 14 is arranged above the plunger body.
[0033] The valve stem 9 is provided with an air release hole 6 .
[0034] The upper end of the valve rod 9 is connected with the oil pushing rod 1 through the disconnector 2 .
[0035] A push block 10 is arranged on the valve stem 9 .
[0036] The working principle of the present invention is: the oil outlet valve on the plunger is ...
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