A sealing structure to prevent waste of oil in diaphragm pump

Abstract

The invention provides a sealing structure for preventing the waste of oil in the diaphragm pump, and solves the problems of short service life of the framework oil seal in the existing diaphragm pump and oil leakage in the rack during the movement of the tappet to waste the oil. The structure includes a frame, a crosshead sliding sleeve, a crosshead and a connecting body; the frame includes a hollow frame body, a connection plate arranged on the end face of the hollow frame body, and a through hole is provided in the middle of the connection plate; the inner surface of the connection body is a conical surface, and the connection body The large end is installed on the end of the hollow frame body with the connecting plate; the crosshead includes a crosshead sliding body and a crosshead connecting rod, the crosshead sliding body is set in the crosshead sliding sleeve, and the crosshead connecting rod extends into the crosshead after passing through the through hole. In the connecting body; the inner wall of the lower part of the connecting body is provided with an oil baffle in the radial direction, which divides the inner cavity of the connecting body into the first chamber and the first chamber, and the first chamber is located on the side close to the hollow frame; the inner wall of the lower part of the connecting body is opened There is a first oil passage located in the first chamber and a second oil passage located in the second chamber; screw plugs are provided on the first and second oil passages.

Description

technical field [0001] The invention relates to diaphragm pump technology, in particular to a sealing structure for preventing oil waste of the diaphragm pump. Background technique [0002] In the diaphragm pump, the crosshead is an important part that converts the rotational motion of the crankshaft into the reciprocating linear motion of the plunger through the connecting rod, and has a guiding role. Such as figure 1 As shown, there is a partial structural diagram of a diaphragm pump, which includes a connecting rod 01, a crosshead sliding sleeve 02, a crosshead 03, a crosshead pin 04, a plunger 05, a tappet 06, a frame 07, and a skeleton seal 08. The crosshead sliding sleeve 02 is set in the frame 07, the crosshead 03 is arranged in the crosshead sliding sleeve 02 and can move back and forth linearly relative to the crosshead sliding sleeve 02, and one end of the crosshead 03 is connected with one end of the tappet 06 by bolts , the other end of the tappet 06 protrudes ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of the short service life of the skeleton oil seal in the existing diaphragm pump and the oil leakage in the frame during the movement of the tappet to waste oil, the present invention provides a sealing structure for preventing the waste of oil in the diaphragm pump

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