An external gear pump capable of forward and reverse rotation
A gear pump and external meshing technology, which is applied to rotary piston/oscillating piston pump components, rotary piston pumps, pumps, etc., can solve unfavorable gear pump production and maintenance management, reduce gear pump production efficiency, and can not turn freely Changes and other issues to achieve the effect of facilitating management and maintenance, novel ideas, and enhancing strength and rigidity
Inactive Publication Date: 2017-11-10
浙江纳德机电股份有限公司
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Problems solved by technology
[0003] At present, gear pumps with forward rotation and reverse rotation are often used in general hydraulic systems at the same time. However, because the working state of the gear pump is limited by its structure, its rotation cannot be changed at will. If the rotation of the gear pump is changed, the sealing element will be damaged. Failure, or even damage to the gear pump, so the current manufacturers of gear pumps will produce forward gear pumps and reverse gear pumps at the same time
However, due to the difference in the structure and some parts of the forward gear pump and the reverse gear pump, the manufacturer needs to use different production equipment and processing techniques to manufacture the two gear pumps with different directions at the same time. The existence of these problems is not conducive to The current production and maintenance management of gear pumps also greatly reduces the production efficiency of gear pumps
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[0019] The present invention will be further described below in conjunction with the accompanying drawings.
[0020] Such as figure 1 As shown, the external gear pump that can be used for forward and reverse rotation includes an upper pump body 5, a lower pump body 1, a driving gear shaft 9, a driven gear shaft 4, a spline shaft 6, two floating side plates 2, two pairs of Sliding bearing 3 and two tapered roller bearings 7 and 8; the two ends of the driving gear shaft 9 and the driven gear shaft 4 are respectively inserted into the inner cavity of the upper pump body 5 and the lower pump body 1, and one end of the spline shaft 6 is inserted into the upper In the inner cavity of the pump body, the driving gear shaft 9 and the spline shaft 6 are connected by internal and external splines; two floating side plates 2 are attached to the two ends of the gear respectively; two pairs of sliding bearings 3 are sleeved on the driving gear shaft 9 and the The two ends of the driven gea...
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An external gear pump capable of forward and reverse rotation, including a gear pump body, characterized in that: the gear pump body is divided into an upper pump body (5), a lower pump body (1), and a drive gear shaft (9) and the two ends of the driven gear shaft (4) are respectively inserted into the inner cavity of the upper pump body (5) and the lower pump body (1), one end of the spline shaft (6) is inserted into the inner cavity of the upper pump body, and the driving gear shaft ( 9) and the spline shaft (6) are connected by internal and external splines, two floating side plates (2) are attached to the two ends of the gear respectively, and two pairs of sliding bearings are sleeved on the driving gear shaft (9) and the driven gear respectively At both ends of the shaft (4), two tapered roller bearings are sleeved on the end where the spline shaft is connected to the driving gear shaft. When assembling, the positions of the driving gear shaft (9) and the driven gear shaft (4) are mutually It can be assembled into gear pumps with forward rotation or reverse rotation according to the requirements.
Description
technical field [0001] The invention relates to an external meshing gear pump, in particular to an external meshing gear pump capable of forward and reverse rotation. Background technique [0002] The external gear pump is a kind of hydraulic pump that conveys the working oil through the continuous transmission of two intermeshing gears to produce a closed volume change. It has a simple structure, good self-priming performance, insensitivity to oil pollution, and Reliable and other advantages, widely used in hydraulic transmission. [0003] At present, gear pumps with forward rotation and reverse rotation are often used in general hydraulic systems at the same time. However, because the working state of the gear pump is limited by its structure, its rotation cannot be changed at will. If the rotation of the gear pump is changed, the sealing element will be damaged. Failure, or even damage to the gear pump, so the current manufacturers of gear pumps will produce forward gear...
Claims
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IPC IPC(8): F04C2/18F04C15/00
Inventor 王建兴吕建和管成
Owner 浙江纳德机电股份有限公司