High-efficiency and low-noise external engagement gear pump
A high-efficiency, external meshing technology, applied in the direction of rotary piston/oscillating piston pump components, pumps, pump components, etc., can solve problems such as low efficiency, high noise, leakage, etc., to reduce friction and collision, and reduce work Noise, noise canceling effect
Active Publication Date: 2022-01-18
合肥赛源液压件有限公司
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Problems solved by technology
[0005] The present invention aims at solving the problems of high noise and low efficiency caused by leakage, oil trapping, cavitation and improper control of gear parameters in current external meshing gears, and designs an external meshing gear pump with high efficiency and low noise.
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[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0039] see Figure 1-9 , the present invention provides a technical solution, a high-efficiency low-noise external gear pump, including a pump body 1 and an end cover connected to the top and bottom surfaces of the pump body 1, and also includes a main gear shaft 2, a driven gear 3. The floating bushing 4, the seal 5 and the inner bushing 6. The main gear shaft 2 includes a gear shaft 21 and a driving gear 22. The driving gear 22 is fixedly sleeved on the posi...
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The invention relates to the technical field of gear pumps and particularly discloses a high-efficiency and low-noise external engagement gear pump. A conical surface with an inclination angle being 83 degrees is arranged at the end, close to the bottom face of a driving gear, of a gear shaft, the section of an annular groove formed in the inner edge of the bottom face of the driving gear is a semicircle with the diameter equal to 1 mm, the top end of the conical surface is tangent to the inner edge of the annular groove, a sealing piece comprises a bottom sealing strip and a top sealing strip which are in clamped connection in the vertical direction, springs are arranged in circular grooves correspondingly formed in the lower surfaces of the top sealing strip and the bottom sealing strip, an oil lubricating groove with the section in the shape of an isosceles right triangle is formed in the inner wall of a neck bush connected in a cylindrical cavity in a sleeved manner in the axial direction, the hole diameter of the inner end of an oil suction hole and the hole diameter of the inner end of an oil pressing hole are in a linear function relation, the depth of an unloading groove is 3 mm, and the center line of the oil lubricating groove, the central axis of the cylindrical cavity and the center lines of a first flow guide groove and a second flow guide groove are located in the same vertical plane; and the problems of high noise and low efficiency caused by the phenomena of leakage, oil trapping and cavitation existing in an external engagement gear, improper gear parameter control and other reasons are solved.
Description
technical field [0001] The invention relates to the technical field of gear pumps, in particular to an external meshing gear pump with high efficiency and low noise. Background technique [0002] The hydraulic pump is the power component of the hydraulic system. It is driven by an electric motor, sucks oil from the hydraulic oil tank, forms pressure oil and discharges it, and sends it to the actuator. Hydraulic pumps are divided into gear pumps, plunger pumps, vane pumps and screw pumps according to their structure. Among them, the gear pump is the most commonly used. [0003] The gear pump is a rotary pump that relies on the change and movement of the working volume formed between the pump housing and the meshing gear to deliver or pressurize the liquid. Two closed spaces are composed of two gears, the pump casing and the front and rear covers. When the gears rotate, the volume of the space on the side where the gears are disengaged increases from small to large, forming ...
Claims
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IPC IPC(8): F04C2/18F04C15/00F04C15/06
CPCF04C2/18F04C15/0003F04C15/0088F04C15/06F04C2240/605F04C2250/20F04C2230/92
Inventor 毕长虹
Owner 合肥赛源液压件有限公司