Noncontact reciprocating motion counter

Abstract

The invention belongs to the field of oil-gas lubrication devices and relates to a noncontact reciprocating motion counter applied to a progressive type fuel-flow divider. A body structure of the noncontact reciprocating motion counter comprises a connection rod, a connection sleeve, an annular magnet, a bolt, a plug, a shell, a columnar magnet and a rubber plug. The connection sleeve is installed on the progressive type fuel-flow divider. One end of the connection sleeve is provided with the plug. An inner cavity of the connection sleeve communicates with an inner cavity of a piston rod of the progressive divider. The connection rod is arranged in the connection sleeve. One end of the connection rod is connected with the piston rod of the progressive type divider. The other end of the connection rod is provided with the annular magnet, and the annular magnet is fixed with the bolt. The annular magnet and the piston rod of the progressive type divider conduct reciprocating motion together. The shell is arranged outside the connection sleeve. An inner hole is formed in the shell. The columnar magnet is arranged in the inner hole. In the use process, the number of times of reciprocating motion of the columnar magnet is recorded with a proximity detector, and therefore the oil supply quantity is controlled; and in this way, the reliability of signal transmission is improved, a motive seal design is avoided, and the oil leakage problem caused by wear of a seal piece is eliminated.

Description

Technical field: [0001] The invention belongs to the technical field of oil-air lubrication equipment, and relates to a counter design for a progressive oil volume distributor, in particular to a non-contact reciprocating counter. Background technique: [0002] The progressive oil volume distributor is a key component in the oil-air lubrication system. The progressive oil volume distributor can output the lubricating oil of a single oil circuit input by the oil pump from multiple oil circuit outlets in sequence, and control the amount of lubricating oil. Metering the output of the oil-air lubrication system is the basis for realizing multi-point and quantitative oil supply in the oil-air lubrication system. The progressive oil distributor is driven by pressure oil, through the logical action of the internal plunger pump, it realizes the sequential output of multi-channel lubricating oil, and at the same time records the number of reciprocating movements of the piston through...

AI Technical Summary

Problems solved by technology

In the prior art, the connecting rod of the sealing ring-type progressive oil distributor is connected to the piston rod, and the housing is connected to the housing of the progressive oil distributor. The connecting rod reciprocates with the piston rod and is counted by the proximity sensor. The connecting rod is sealed by a sealing ring to ensure that the high-pressure lubricant in the progressive oil distributor will not leak, but the inner cavity of the housing cannot withstand high-pressure oil. Due to the high oil pressure in the progressive oil distributor, the viscosity of the lubricating oil High, the assembly error of the piston rod, the processing error of the connecting rod, and the wear and tear of the reciprocating movement of the connecting rod cause the sealing ring to often leak oil. Once the oil leakage of the sealing ring will cause the oil supply of the lubrication point to be lower than the design value, resulting in It is imprecise, pollutes the working environment and has poor practicability; while the magnetic induction type is designed to install a magnet in the piston rod, so that the magnet can follow the reciprocating movement of the piston, and obtain the number of piston movements through the Hall proximity switch. When moving to the right, when the magnet is close to the Hall proximity switch, an electrical signal can be generated to realize counting; when the piston moves to the left, the magnet is far away from the proximity switch, the magnetic field is weakened, and the Hall proximity switch has no signal output. This design uses a non-contact method Obtaining the action signal of the piston can avoid the oil leakage caused by the wear of the sealing ring, but in the use of the steel plant, due to the harsh working environment, sometimes the sensor will fail and other problems, the failure rate is high, and it is currently discontinued. Therefore, Design and prepare a non-contact reciprocating motion counter with high sensitivity, accurate counting, and accurate fuel supply

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