A pump rod structure for a plunger pump
A technology for plunger rods and plunger pumps, which is applied to components of pumping devices for elastic fluids, pump elements, variable displacement pump components, etc., and can solve the problem of low oil absorption and oil pressure efficiency of plunger pumps, The sealing performance of the lifting part is not good enough, the oil absorption of the plunger pump, the oil pressure jam and other problems, to achieve the effect of facilitating oil intake, reducing reciprocating motion resistance, and high oil discharge efficiency
Active Publication Date: 2015-07-29
ZHEJIANG REFINE WUFU AIR TOOLS
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Problems solved by technology
[0003] The disadvantages of the pump rod structure of this traditional plunger pump are: (1) the efficiency of the plunger pump in oil suction and pressure is not too high; (2) the sealing performance of the lifting part is not good enough, and sometimes The lifting rod cannot lift the check valve, which will cause the oil suction and pressure oil of the plunger pump to be blocked, causing the construction to stop midway; (3) The resistance of the lower end surface of the oil inlet casing is large, and the oil inlet pressure on the side is small
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[0017] Below in conjunction with accompanying drawing, the present invention will be further described with specific embodiment, see figure 1 —3:
[0018] A pump rod structure for a plunger pump, the connecting pipe 1 is sealed and connected with the hollow pump body 6, the check valve seat 72 and the oil inlet sleeve 11 from top to bottom to form a pump rod shell, and the pump rod shell The connecting rod 2 is sequentially connected with the plunger rod 4, the one-way valve seat 53 and the lifting rod 8 from top to bottom to form a pump oil moving part. The lower end of the lifting rod 8 arranged in the oil inlet casing 11 is fixed with a The inner wall of the oil casing 11 cooperates with the material lifting plate 10, and the plunger rod 4 is in sliding and sealing cooperation with the upper part of the inner wall of the pump body 6. Cooperate with the valve seat 53 to form a booster check valve 5, the check valve seat 72 is provided with a check valve core 71, the specifi...
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The invention belongs to the technical field of oil injecting machines, in particular to a pump rod structure used for a plunger pump. A connection pipe is sequentially connected with a hollow pump body, a check valve seat and an oil inlet sleeve pipe from top to bottom in a sealing mode to form a pump rod outer shell, a connection rod in the pump rod outer shell is sequentially connected with a plunger rod, a one-way valve seat and a lifting rod from top to bottom to form a pump oil moving part, a check valve element is arranged on the check valve seat, an annular concave groove is formed in the inner cylindrical surface of the check valve element which is made of non-metal materials and is a hollow annular body, a sealing ring is arranged in the concave groove, a boss is arranged on the lower end surface of the annular body, an oil-passing groove is arranged at the upper portion of the lateral wall of the annular body, a spherical type concave groove is arranged at the inner side of the annular body, and the lower wall of the oil-passing groove is contracted gradually from bottom to top to form an inclined lower wall. The pump rod structure used for the plunger pump has the advantages that the movement of a check valve along with the lifting rod is flexible, the oil inlet pressure of the oil inlet sleeve pipe is large, and the oil inlet resistance is small. The pump rod structure used for the plunger pump is suitable for the oil injecting machines in the same type.
Description
technical field [0001] The invention belongs to the technical field of oil injection machines, in particular to a pump rod structure used for a plunger pump of an oil injection machine. Background technique [0002] The pump rod of the plunger pump is an important device of the oil injection machine. It relies on the reciprocating movement of the plunger rod and the lifting rod in the cylinder body, so that the volume of the sealed working cavity changes to realize oil absorption and oil pressure. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency and convenient flow adjustment, and is widely used in high pressure, large flow and flow adjustment occasions, such as hydraulic presses, engineering machinery and ships. [0003] The disadvantages of the pump rod structure of this traditional plunger pump are: (1) the efficiency of the plunger pump in oil suction and pressure is not too high; (2) the sealing performance of the lifting p...
Claims
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IPC IPC(8): F04B53/10F04B53/16F04B53/00
Inventor 潘灵钢
Owner ZHEJIANG REFINE WUFU AIR TOOLS