Valve core for manual fuel pump cover
A hand oil pump and spool technology, which is applied to pump components, variable displacement pump components, components of pumping devices for elastic fluids, etc., can solve the problems of time-consuming and labor-intensive processing costs, high processing difficulty, etc., and achieve production efficiency High, low processing cost, low production cost effect
Inactive Publication Date: 2020-06-12
荣成宏丰汽车配套股份有限公司
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Problems solved by technology
[0004] It is difficult to process the valve core of the hand oil pump cover in the prior art, which is time-consuming and labor-intensive, and the processing cost is high
Method used
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Embodiment Construction
[0021] like figure 1 , figure 2 As shown, the spool of the pump cover of the hand oil pump includes a cylindrical spool body 1. The spool body 1 is provided with an oil return hole 2 and an oil inlet hole 3. The middle side wall of the spool body 1 is provided with an annular inlet. The oil tank, the oil return hole 2 is a through hole parallel to the axis, the oil inlet hole 3 is a blind hole parallel to the axis of the valve core body 1, and the middle part of the oil inlet hole 2 is provided with an inlet perpendicular to the axis of the valve core body 1. The oil side hole 4, one end of the oil inlet side hole 4 communicates with the oil inlet hole 2, the other end of the oil inlet side hole 4 is located on the bottom wall 6 of the oil inlet groove, and the width of the bottom wall 6 of the oil inlet groove is greater than that of the oil inlet side hole 4 Diameter, the angle between the side wall 5 of the oil inlet groove and the bottom wall 6 of the oil inlet groove is...
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The invention provides a valve core for a manual fuel pump cover. The valve core comprises a cylindrical valve core body, and a fuel return hole and a fuel inlet are formed in the valve core body; anannular fuel feeding groove is formed in the middle side wall of the valve core body, and the fuel return hole is a through hole which is parallel with the axis; the fuel inlet is a blind hole which is parallel with the axis of the valve core body, and the middle part of the fuel inlet is provided with a fuel feeding side hole which is perpendicular to the axis of the valve core body; one end of the fuel feeding side hole communicates with the fuel inlet, and the other end of the fuel feeding side hole is located on the bottom wall of the fuel feeding groove; and the width of the bottom wall of the fuel feeding groove is larger than the diameter of the fuel feeding side hole, and an included angle between the side wall of the fuel feeding groove and the bottom wall of the fuel feeding groove is 115-120 degrees. The valve core has the beneficial effects that the side wall of the fuel feeding groove has no burrs, the machining is simple, and the production cost is low.
Description
technical field [0001] The invention belongs to the field of mechanical equipment, in particular to a pump cover valve core of a hand oil pump. Background technique [0002] The hand fuel pump is a machine that pumps the fuel in the fuel tank into the oil passage. When there is air in the oil passage of the diesel engine, such as a new car just off the assembly line, or the fuel in the fuel tank is exhausted, when the engine is started, the engine cannot be started, because the diesel fuel pump can only work when the engine is started, and at this time it is necessary to use The hand pump pumps the fuel from the fuel tank into the oil passage. [0003] Application number: 200920241640.6 discloses a hand oil pump, which includes a pump body. The pump body is provided with an inlet pipeline with an oil inlet and a connection port. There are two oil inlets and are distributed on both sides of the pump body. There are an oil inlet passage, a pump chamber and two oil outlet pas...
Claims
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IPC IPC(8): F04B53/10F02M37/16
CPCF02M37/16F04B53/10
Inventor 张可丰
Owner 荣成宏丰汽车配套股份有限公司