Lightweight plunger and plunger pump based on slm technology
A lightweight, plunger technology, applied to the components of pumping devices for elastic fluids, pumps, multi-cylinder pumps, etc. Quality, saving energy and manufacturing materials, effect of reducing friction
Active Publication Date: 2018-05-15
ZHEJIANG UNIV
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- Application Information
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Problems solved by technology
However, because the design and manufacture of plungers are limited by traditional machine tools, many plunger structures with superior performance only stay in the design stage.
Method used
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[0016] The aforementioned and other technical contents, features and effects of the present invention will be further described below in conjunction with the accompanying drawings.
[0017] figure 1 and figure 2 Shown is a structural diagram of an existing axial plunger pump, which is mainly composed of a flow plate 1, a cylinder body 2, a plunger 3, a preload spring 4, a return plate 5 and a sliding shoe 6, and the cylinder body 2. There is a plunger hole 7 for accommodating the plunger 3 along the circumferential direction. The plunger head 11 of the plunger 3 is ball-hinged on the sliding shoe 6, and the sliding shoe 6 is sleeved on the return plate 5. The The distribution plate 1 is installed on the cylinder body 2. The distribution plate 1 has an oil distribution hole 8 corresponding to the plunger hole 7. The sealed working volume at the bottom of the plunger 3 in the cylinder body 2 passes through the oil distribution plate 1 and the pump. The inlet and outlet are co...
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The invention discloses a lightweight plunger based on the SLM technique and a plunger pump. The plunger comprises a plunger body and a seal cap, wherein the plunger body is integrally formed from a plunger head, a connecting part and a plunger tail in sequence; the plunger head is a hollow sphere; oil holes are formed in the hollow sphere; the plunger tail is a hollow cylinder; at least four uniformly-distributed oil flow channels are formed in the side wall of the hollow cylinder, and parallel to the axis of the hollow cylinder; and the oil flow channels and the oil holes join up and communicate with each other at the connecting part. The SLM rapid prototyping technology is applied to manufacturing of the plunger of the plunger pump, thereby designing an enclosed hollow thin-wall plunger structure; accordingly, the weight of the plunger can be remarkably reduced, and the driving force and the inertia force in motion can be reduced; and meanwhile, the invalid volume can be reduced, the volume efficiency can be improved, the abrasion can be reduced, the usability of the plunger pump can be remarkably improved, and the service life of the plunger pump can be remarkably prolonged.
Description
technical field [0001] The invention belongs to the technical field of plunger pumps, in particular to a lightweight plunger and a plunger pump based on SLM technology. Background technique [0002] The plunger is an important part of the plunger pump. figure 1 It is a structural diagram of an existing axial piston pump, which is mainly composed of a valve plate, a cylinder body, a plunger, a preload spring, a return plate and a sliding shoe. There is a certain angle between the axis of the swash plate and the axis of the cylinder body, so that when the cylinder body rotates under the drive of the transmission shaft, the plunger makes a reciprocating linear motion in the cylinder body, thereby completing the process of oil absorption and oil discharge. The plunger is a key part of the plunger pump, and its structural design and manufacturing quality have an important impact on the performance of the plunger pump. However, because the design and manufacture of plungers are ...
Claims
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IPC IPC(8): F04B53/14F04B1/20
CPCF04B1/124F04B1/20
Inventor 祝毅葛翔
Owner ZHEJIANG UNIV