A rotary variable diameter sealed oil extractor
An oil pumping and sealing seat technology, which is applied to machines/engines, variable volume pump components, liquid variable volume machinery, etc., can solve problems such as damage to the oil pump, prevent shaking, reduce friction, and ensure normal work. Effect
Active Publication Date: 2020-04-14
大连坤麟金属制品有限公司
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Problems solved by technology
[0004] The purpose of the patent of the present invention is to provide a rotary variable-diameter sealed oil extractor to solve the problem that the existing sealed oil extractor proposed in the above-mentioned background technology is used because the oil extractor will be in contact with the working cylinder when used. The internal friction of the mandrel causes damage to the oil extractor
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[0016] The technical solutions in the patent embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the patent embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the patent of the present invention, not all implementations example. Based on the embodiments in the patent of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the patent of the present invention.
[0017] see Figure 1-4 , the present invention patent provides a technical solution: a rotary variable diameter sealed oil pump, including a pump barrel 4, the lower end of the pump barrel 4 is provided with a lower oil pipe joint 3, and one end of the oil pipe lower joint 3 is provided with a lower oil pipe 2, the pump The barrel 4 and the lower oil pipe 2 are fixedly connect...
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The invention discloses a rotary variable-diameter sealed oil extractor which comprises a pump barrel. An oil pipe lower joint is arranged at the lower end of the pump barrel, a lower oil pipe is arranged at one end of the oil pipe lower joint, the pump barrel is fixedly connected to the lower oil pipe through the oil pipe lower joint, a sandproof double ball valve fixing end is arranged at one end of the lower oil pipe, an oil pipe upper joint is arranged at the upper end of the pump barrel, a center rod is arranged in the pump barrel, and a rotary oil extractor is arranged on the outer sideof the center rod. Through a positioning steel ball bearing bracket and positioning steel balls, when the oil extractor is used, the center rod is positioned by means of the three positioning steel balls on the outer side of the positioning steel ball bearing bracket, so that friction of the moving oil extractor and the inner wall of the pump barrel is prevented. Sliding friction is converted intorolling friction through the three positioning steel balls on the outer side of the positioning steel ball bearing bracket, so that the frictional force of the positioning steel ball bearing bracketpositioning steel ball bearing bracket is worn is prevented.
Description
technical field [0001] The patent of the invention belongs to the technical field of oil extractors, and in particular relates to a rotary variable-diameter sealed oil extractor. Background technique [0002] At present, the general pumping unit of pumping well at home and abroad, translated name (oil pump), its structure is: the working cylinder (pump cylinder) is connected to the lower end of the oil well, and is equipped with a sealing valve, commonly known as a fixed valve. There is a built-in oil extractor with a length of 1.2m and a working cylinder with a gap between 0.025mm and 0.18mm and a floating valve at both ends, commonly known as a floating valve, commonly known as a plunger. Pulled by the series sucker rods, polished rods and the big braids of the pumping unit, it reciprocates in the working cylinder, sucks the raw liquid to the wellhead, and transports it to the oil storage place through a special pipeline. At present, it has been used for nearly a hundred ...
Claims
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IPC IPC(8): F04B47/00F04B53/00F04B53/16
Inventor 李忠镇鲁广立刘景林张百鑫
Owner 大连坤麟金属制品有限公司