a sealed box

Abstract

The invention discloses a sealing box, which comprises: a first through hole is opened on the box body; a second through hole is opened on the tubular sleeve, and the tubular sleeve is penetrated in the first through hole; the gland includes a first end, a second through hole The second end and the third through hole, the third through hole runs through the first end and the second end; the first end is fixedly inserted into the first through hole, and the end face of the first end fits the end face of the tubular sleeve; the third through hole There is a groove on the inner wall, and a sealing rubber ring is embedded in the groove; wherein, the centerlines of the first through hole, the second through hole and the third through hole coincide, and when the connecting rod is passed through it, the second through hole The gap between the inner wall of the hole and the connecting rod is less than a preset difference, and the sealing rubber ring is attached to the connecting rod, so as to prevent the oil on the connecting rod from flowing to the second end. The sealing box provided by the invention is used to solve the technical problems in the prior art that oil leakage is easy to occur, and the replacement of the skeleton oil seal after oil leakage is labor-intensive and costly. The technical effects of effectively preventing oil leakage and reducing maintenance costs are realized.

Description

technical field [0001] The invention relates to the technical field of oil exploitation, in particular to a sealed box. Background technique [0002] At present, the crankcase of the plunger pump used in the oil field is lubricated with splash oil, and the connecting rod is sealed with a skeleton oil seal. However, during the operation of the plunger pump, there is often a problem of oil leakage from the oil seal. The main reason for the oil seal leakage is that the connecting rod is a linear reciprocating motion, and the contact surface between the rubber of the skeleton oil seal lip and the connecting rod is small. The rubber is worn, and the gap between the skeleton oil seal lip and the connecting rod increases, causing oil leakage. [0003] After oil leakage occurs, the frame oil seal needs to be replaced, and the replacement of the frame oil seal is labor-intensive and costly. [0004] That is to say, in the prior art, the skeleton oil seal is used to seal the oil on ...

AI Technical Summary

Problems solved by technology

[0005] By providing a sealing box, the present invention solves the technical problem of using a frame oil seal to seal the oil on the connecting rod in the prior art, which is not only prone to oil leakage, but also has high labor intensity and high cost for replacing the frame oil seal after oil leakage

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