Plunger pump plunger aligning structure
A technology of plunger pump and plunger, which is applied in the field of plunger self-aligning structure of plunger pump, can solve the problems of verticality error, short service life and machining error of intermediate rod and connecting rod, and achieves elimination of verticality error and reduction of efficiency. , The effect of preventing eccentric wear
Inactive Publication Date: 2016-12-14
NINGBO HELI MECHANICAL PUMP CO LTD
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Problems solved by technology
Due to the processing errors in the moving parts of the power end and the hydraulic end, such as the verticality error of the contact end surface of the intermediate rod connecting rod 1' and the plunger 7', the intermediate rod connecting rod 1', the plunger 7' and the guide sleeve It is difficult to guarantee the coaxiality and parallelism requirements of 9'
When the plunger 7' is connected with the intermediate rod 1', all the accumulated errors are concentrated on the flat end surface of the plunger 7' and the intermediate rod 1', so that the plunger 7' and the intermediate rod 1' are not in a straight line On the top, there is eccentric wear between the filler 8' and the guide sleeve 9', and the heat is severe, which promotes the accelerated wear of the plunger 7' and the filler 8', and the service life is short, thereby affecting the reliability of the reciprocating plunger pump and low efficiency.
Method used
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[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0021] Such as figure 2 The plunger pump plunger self-aligning structure shown includes an intermediate connecting rod 1 connected to the reciprocating drive mechanism, a plunger 6 arranged at the hydraulic end, and one end of the plunger 6 is tightly connected to the intermediate rod 1 through a spherical sliding assembly. The other end of the plunger 6 passes through the packing 7 and the guide sleeve 8, and the packing 7 and the guide sleeve 8 are installed in the sealing box body 9; the spherical sliding assembly is composed of the adjustment block 2 and the sphere 3, and the end surface of the middle connecting rod is provided with a column Plug cavity 11, the bottom of the plunger cavity 11 of the intermediate connecting rod 1 is installed with the half adjustment block, the adjustment block 2 has a hemispherical groove, half of the sph...
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The invention relates to a plunger pump plunger aligning structure. The plunger pump plunger aligning structure comprises a middle connecting rod which is arranged at the power end and is connected with a reciprocating driving mechanism, a plunger which is arranged on the hydraulic end and a plunger cavity which is formed in the end face of the middle connecting rod, and is characterized in that the end of the plunger is connected to the end of the middle connecting rod through a spherical sliding assembly, a compression nut sleeves the outer part of the connecting part of the plunger and the middle connecting rod to connect the plunger and the spherical sliding assembly to the end of the middle connecting rod. Compared with the prior art, the aligning structure has the advantages that the perpendicularity error of the contact end face of the plunger and the middle rod can be effectively eliminated, the parallelism of the plunger and the middle rod is achieved, and the eccentric wear and heating phenomenon of the plunger due to the unparallel plunger and the middle rod is prevented, the efficiency is reduced, and the service life of the plunger, a guide sleeve and packing is shortened.
Description
technical field [0001] The invention relates to a plunger self-aligning structure of a plunger pump. Background technique [0002] The reciprocating plunger pump is a very widely used mechanical product and plays an important role in various industries. refer to figure 1 , One of the main failure modes of the reciprocating plunger pump is that the plunger 7' and the packing 8' are eccentrically worn during work, causing serious heat generation, fast wear, serious leakage, and short life, which seriously affect the reliability of the reciprocating plunger pump. [0003] The connection mode of the power end and the liquid end of the conventional reciprocating plunger pump is: the connecting rod 1' of the middle rod of the power end and the plunger 7' of the liquid end are connected by screws and clamps, see for example figure 1 , figure 2 As shown, the main connecting parts include intermediate rod connecting rod 1', snap ring 4', gasket 5', compression nut 6', plunger 7',...
Claims
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Login to View More IPC IPC(8): F04B53/00
CPCF04B53/00
Inventor 陈明海葛溪陈英峰
Owner NINGBO HELI MECHANICAL PUMP CO LTD