Dynamic sealing structure and hydraulic device
A dynamic sealing and sealing structure technology, applied in the field of hydraulic devices, can solve problems such as high maintenance cost, wear of the plunger 30`, liquid leakage, etc., and achieve the effects of long service life, low maintenance cost and high work efficiency
Active Publication Date: 2018-09-21
禾通科技公司
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Problems solved by technology
However, the traditional plunger pump 100` has not been able to effectively solve the leakage problem caused by the poor sealing effect between the plunger 30` and the hydraulic cylinder 10`, which restricts the development of the plunger pump 100`
At present, the plunger pump 100` mainly uses packing 20` (see Figure 13 ) or install the cup 40` on the plunger 30` (see Figure 14 ) for sealing, since the packing 20` or the cup 40` rubs under the high pressure and high speed environment, it is easy to cause wear to the plunger 30`, and the packing 20` or the cup 40` itself will also be worn due to friction, from Cause the leakage of the liquid in the hydraulic cylinder 10`, affecting the working efficiency of the plunger pump 100`
[0003] Although the wear resistance of the plunger 30` can be improved by changing the material of the plunger 30` at present, such as choosing a ceramic plunger to improve its service life, the traditional plunger pump 100` still needs regular cleaning to ensure the sealing effect. Replacing the filler 20` or the cup 40` will cause problems such as high maintenance cost and unsatisfactory work efficiency
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[0046] 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 part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0047]It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.
[0048] In addition, the d...
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The invention discloses a dynamic sealing structure and a hydraulic device adopting the dynamic sealing structure. The dynamic sealing structure comprises a hydraulic cylinder, a plunger and a sealing structure. The sealing structure comprises a sealing member, first elastic members and second elastic members. The sealing member abuts against the inner wall of the hydraulic cylinder through the first elastic members, the sealing member abuts against the groove inner wall of a containing groove in the liquid inflow direction through the second elastic members, or, the sealing member abuts against the inner wall of the hydraulic cylinder through the first elastic members, and the sealing member abuts against the groove inner wall of the containing groove in the liquid inflow direction through the second elastic members. According to the technical scheme, by arranging the first elastic members and the second elastic members, when the plunger and the hydraulic cylinder relatively move, the sealing member is not prone to being worn, automatic compensation of the sealing member can be achieved even if the sealing member is worn, and the good sealing effect of the sealing member is kept.
Description
technical field [0001] The invention relates to the technical field of sealing, in particular to a dynamic sealing structure and a hydraulic device using the dynamic sealing structure. Background technique [0002] Piston pump is a kind of positive displacement pump. It has been widely used in various important fields such as shipbuilding, oil exploration, loader, chemical industry, mine and so on for its advantages of high efficiency, high lift and adjustable flow. However, the traditional plunger pump 100' has not been able to effectively solve the leakage problem between the plunger 30' and the hydraulic cylinder 10' due to poor sealing effect, which restricts the development of the plunger pump 100'. At present, the plunger pump 100` mainly uses packing 20` (see Figure 13 ) or install the cup 40` on the plunger 30` (see Figure 14 ) for sealing, since the filler 20` or the cup 40` rubs under high pressure and high speed, it is easy to cause wear to the plunger 30`, and...
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IPC IPC(8): F16J15/16
CPCF16J15/164
Inventor 陈英强
Owner 禾通科技公司