CN213393759U

CN213393759U - Anti-trapping oil bladder type accumulator bacterial valve

Info

Publication number: CN213393759U
Application number: CN202022382619.7U
Authority: CN
Inventors: 于正苗; 于伟才; 韩晓
Original assignee: Shandong University of Science and Technology
Current assignee: Shandong University of Science and Technology
Priority date: 2020-10-22
Filing date: 2020-10-22
Publication date: 2021-06-08
Anticipated expiration: 2030-10-22

Abstract

The utility model provides a prevent stranded oil skin bag formula energy storage ware bacterial type valve arranges 4-8 draining holes on bacterial type valve body, arranges the draining groove at valve body intracavity portion, and the draining hole is connected with the draining groove. When the fungus type valve was closed, guaranteed through bleeder vent and draining groove that pressure oil flows smoothly in from the energy storage ware, reduced inside and outside pressure difference for the fungus type valve is opened again under the spring action, has avoided the trapping oil phenomenon, has increased the through-flow area simultaneously, makes the action of energy storage ware more sensitive.

Description

Anti-trapping oil bladder type accumulator bacterial valve

Technical Field

The utility model belongs to hydraulic pressure components and parts field, in particular to fungus type valve in leather bag formula energy storage ware exit.

Background

In a hydraulic system, an energy accumulator is used as an energy storage element, is widely applied and mainly used for absorbing pressure and flow pulsation, serving as an auxiliary power source, recovering energy and the like. The leather bag type energy accumulator has the advantages of small inertia, sensitive action, low price, gas-liquid isolation, convenient maintenance and the like, thereby having wide application. The bacterial valve is used as an important component of the leather bag type energy accumulator, plays a role in protecting the energy accumulator in the working process, is closed when the leather bag is fully expanded, prevents the leather bag from being over-expanded and is extruded from the hydraulic oil port to be damaged. When the energy accumulator is discharged, namely in the oil discharging stage, the bacterial valve is closed too early often due to overlarge pressure difference, and the oil trapping phenomenon occurs. The oil trapping phenomenon often occurs, the function of the energy accumulator is limited and even the energy accumulator fails, and the service life of the leather bag is influenced.

Disclosure of Invention

To the aforesaid oil trapping phenomenon, the utility model provides a prevent oil trapping leather bag formula energy storage ware bacterial type valve still can keep fluid in the energy storage ware to flow out smoothly when bacterial type valve is closed, reduces inside and outside differential pressure in order to open bacterial type valve, avoids oil trapping phenomenon.

In order to achieve the above object, the present invention provides the following technical solutions.

An anti-trapping oil bladder type accumulator bacterial valve comprises a valve rod, a valve body, a spring and a nut; wherein, the valve rod is sleeved with a spring, the spring is pressed on the valve body, and the valve rod is connected with the valve body through a nut.

Preferably, an oil drainage hole along the axial direction is arranged on the inner side of the accumulator of the valve body of the mushroom-type valve.

Preferably, 4-8 oil drain holes are uniformly distributed on the valve body.

Preferably, the oil drainage holes are all rounded, so that the leather bag is prevented from being scratched.

Preferably, a circumferential oil drainage groove is arranged in the valve body of the mushroom-shaped valve, and the oil drainage hole is connected with the oil drainage groove and further connected with the interior of the cavity of the mushroom-shaped valve.

It is particularly pointed out that the existence of the oil drainage hole and the oil drainage groove can reduce the strength of the valve body, and measures such as replacing materials with better performance or properly increasing the wall thickness of the valve body and the like are adopted to ensure that the valve body cannot be damaged.

The beneficial effects of the utility model are as follows.

When the energy accumulator works normally, in the energy accumulation stage, oil flows into the energy accumulator through the mushroom-shaped valve to compress the leather bag, and in the process, the oil can flow in through the valve body cavity and can also flow in through the oil drainage hole and the oil drainage groove; similarly, in the energy release stage, the leather bag expands, oil flows out of the energy accumulator through the bacterial valve, and the oil can flow out through the valve body cavity and can flow out through the oil drainage hole and the oil drainage groove. The existence of draining hole and draining groove has increased the through flow area for the energy storage ware action is more sensitive.

When the accumulator bacterial valve is closed, oil can not flow in and out through the main runner, but can pass in and out through the oil drain hole and the oil drain groove, and especially high-pressure oil in the accumulator can be ensured to flow out, so that the internal and external pressure difference is reduced, the bacterial valve is opened again, and the oil trapping phenomenon is avoided.

Different from other bacterial valves with the function of preventing trapped oil, the utility model does not modify the valve rod, and avoids reducing the strength of the valve rod or influencing the contact between the valve rod and the leather bag to damage the leather bag; the utility model discloses do not take the form of slotting on fungus type valve rod or valve body conical surface, because the fluting is difficult to process on the conical surface, and here easily with the leather bag contact and fish tail leather bag, thereby the high-pressure oil stream gets into the valve body intracavity through the oil extraction groove on the conical surface and can produce the impact to the valve rod and influence its life-span, and straight hole easily processes, the straight hole of radius angle can not harm the leather bag, and because the cushioning effect of draining the groove, can not produce the impact to the valve rod.

Drawings

Fig. 1 is a schematic structural diagram of a bladder type accumulator.

Fig. 2 is a schematic structural diagram of an anti-trapping oil bladder type accumulator mushroom valve.

Fig. 3 is a cross-sectional view of an anti-entrapment oil bladder accumulator poppet valve.

Fig. 4 is a top view of an anti-entrapment oil bladder accumulator poppet valve.

In the figure: 1. inflation valve 2, protective cap 3, leather bag 4, shell 5, mushroom type valve 6, valve rod 7, spring 8, oil drain hole 9, oil drain groove 10, valve body 11, nut

Detailed Description

The technical solutions provided by the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

FIG. 1 is a schematic structural diagram of a bladder type energy accumulator, which mainly comprises an inflation valve 1, a protective cap 2, a bladder 3, a shell 4 and a mushroom type valve 5; the bacterial valve consists of a valve rod, a valve body, a spring and a nut; the head of the valve rod is in a mushroom shape and is matched with the valve body; the mushroom-shaped valve is in a normally open state under the action of the spring, when the energy accumulator discharges oil fully, the leather bag expands fully to extrude the valve rod, the mushroom-shaped valve is closed, and the oil discharging stage is finished; when the pressure difference between the inside and the outside of the energy accumulator is larger, the mushroom-type valve is closed, the leather bag is not fully expanded at the moment, and a large amount of high-pressure oil is trapped in the energy accumulator, so that the oil trapping phenomenon is generated; the oil trapping phenomenon can cause the function of the energy accumulator to be limited, the efficiency to be low, the service life of the energy accumulator leather bag to be influenced, and the damage to the energy accumulator leather bag is large.

The utility model discloses to the stranded oil problem, improved the fungus type valve, arrange 4-8 draining holes 8 on valve body 10 promptly, arrange draining groove 9 in the valve body intracavity portion, the draining hole is connected with draining groove. When the bacterial valve is closed, the oil can flow out through the oil drainage hole and the oil drainage groove, the internal and external pressure difference is reduced, and the bacterial valve is opened again, so that the oil trapping phenomenon is avoided.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An anti-trapping oil bladder type accumulator bacterial valve is characterized by comprising a valve rod, a valve body, a spring and a nut; wherein the spring is sleeved on the valve rod and further pressed on the valve body, and the valve rod is provided with threads and is connected with the valve body through a nut; the valve body is provided with an oil drainage hole and an oil drainage groove.

2. The anti-trapping bladder accumulator mushroom valve according to claim 1, wherein an axial drain hole is disposed inside the mushroom valve body accumulator.

3. The anti-trapping oil bladder type accumulator bacterial valve as claimed in claim 1, wherein the number of oil drain holes is 4-8, and the oil drain holes are uniformly distributed on the valve body.

4. The anti-trapping bladder accumulator mushroom valve of claim 1, wherein the drain holes are rounded to avoid scratching the bladder.

5. The anti-trapping bladder accumulator mushroom valve according to claim 1, wherein an oil drain groove is disposed inside a valve body of the mushroom valve.

6. The anti-entrapment oil bladder type accumulator bacterial valve as claimed in claim 1, wherein the oil drainage hole is connected with the oil drainage groove and further connected with the inside of the bacterial valve cavity.