CN218094007U

CN218094007U - Nitrogen spring with good sealing performance

Info

Publication number: CN218094007U
Application number: CN202222735995.9U
Authority: CN
Inventors: 张德金
Original assignee: Hefei Jichun Electromechanical Technology Co ltd
Current assignee: Hefei Jichun Electromechanical Technology Co ltd
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2022-12-20
Anticipated expiration: 2032-10-17

Abstract

The utility model discloses a nitrogen spring with good sealing performance, which comprises a shell, a plunger and a guide sleeve, wherein the guide sleeve is fixedly arranged on the upper part of the inner wall of the shell, and the plunger is slidably arranged on the inner side of the guide sleeve; a plurality of O-shaped sealing rings are fixedly arranged between the guide sleeve and the inner wall of the shell, a plurality of Y-shaped sealing rings are arranged on the inner side of the guide sleeve, and the Y-shaped sealing rings are connected with the plunger in a sliding manner; still seted up in the uide bushing and be annular lubricated chamber, lubricated intracavity is filled has lubricating oil, the uide bushing inboard is fixed to be equipped with the sealing ring corresponding with lubricated chamber. The utility model relates to a rationally, compact structure, the improvement of very big degree the leakproofness of nitrogen spring has guaranteed the stability in use of nitrogen spring, can not blast when also having guaranteed nitrogen spring extreme pressure simultaneously, can carry out at the uniform velocity pressure release to nitrogen spring, has guaranteed the security of nitrogen spring, has also protected nitrogen spring connected's equipment not to receive the impact.

Description

Nitrogen spring with good sealing performance

Technical Field

The utility model relates to a nitrogen gas spring technical field especially relates to a nitrogen gas spring that leakproofness is good.

Background

The nitrogen spring is a novel elastic component taking high-pressure nitrogen as a working medium, has small volume, large elasticity, long stroke, stable work, precise manufacture and long service life, and can finish the work which is difficult to finish by conventional elastic components such as metal springs, rubber and the like.

When current nitrogen spring uses, probably because the life of leakproofness problem influence nitrogen spring, also can lead to nitrogen spring's stability relatively poor simultaneously, simultaneously because reasons such as product quality control, the condition of even having the nitrogen spring explosion takes place, causes certain potential safety hazard to cause its equipment of connecting to receive great impact easily and lead to damaging.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the life that has the leakproofness problem to influence nitrogen spring among the prior art, also can lead to nitrogen spring's stability relatively poor simultaneously, and the condition idol of nitrogen spring explosion takes place simultaneously, can cause the shortcoming of certain potential safety hazard, and the good nitrogen spring of a leakproofness of proposing.

In order to realize the purpose, the utility model adopts the following technical scheme:

the utility model provides a good nitrogen spring of leakproofness, includes shell, plunger and uide bushing, uide bushing fixed mounting is on shell inner wall upper portion, plunger slidable mounting is inboard at the uide bushing.

A plurality of O-shaped sealing rings are fixedly arranged between the guide sleeve and the inner wall of the shell, a plurality of Y-shaped sealing rings are arranged on the inner side of the guide sleeve, and the Y-shaped sealing rings are connected with the plunger in a sliding mode.

Still seted up in the uide bushing and be annular lubricated chamber, lubricated intracavity is filled has lubricating oil, the uide bushing inboard is fixed to be equipped with the corresponding sealing ring in lubricated chamber, be equipped with a plurality of communicating pipes that link up the inside and outside both sides on the sealing ring, and communicating pipe and lubricated chamber through connection.

An inflation inlet is formed in the inner bottom wall of the shell, an air inlet pipe is horizontally communicated with the lower end of the inflation inlet, a one-way valve is arranged in the air inlet pipe, and a plug is further arranged on the outer side of the air inlet pipe.

Preferably, the guide sleeve is further provided with a corresponding dust cover, and the dust cover is clamped between the shell and the plunger.

Preferably, an elastic snap ring is further clamped between the guide sleeve and the inner wall of the shell.

Preferably, the guide sleeve ring-shaped inner wall is further provided with an annular cooling cavity, cooling oil is filled in the cooling cavity, and the upper end of the cooling cavity is further communicated with the top wall of the guide sleeve and is provided with an oil supplementing pipe.

Preferably, the lower end of the inflation inlet is horizontally connected with a small explosion-proof hole in a through mode, the other end of the explosion-proof hole is connected with an opening which penetrates through the side wall of the shell, an explosion-proof plug is connected with the inner thread of the opening, and a pressure regulating valve is further arranged in the opening.

More preferably, the explosion-proof plug comprises an annular fixed shell, trapezoidal threads are arranged on the outer side of the fixed shell, a corresponding core plug is further arranged on the inner side of the fixed shell, an anti-release ring is integrally formed on the outer side of the core plug, and the anti-release ring is in transition fit with the inner wall of the fixed shell.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in the utility model, the use effect of the nitrogen spring is further ensured by the sealing ring, and the sealing ring forms a sealing oil film by matching with the lubricating oil in the lubricating cavity, so that the sliding effect of the plunger is ensured while the sealing effect is ensured;

2. the utility model discloses in, carry out the pressure release to nitrogen spring through explosion-proof plug cooperation explosion vent when nitrogen spring reachs ultimate pressure, can effectually avoid the explosion of nitrogen spring to cause danger, protection operating personnel and nitrogen spring connected's equipment.

The utility model relates to a rationally, compact structure, the improvement of very big degree nitrogen spring's leakproofness has guaranteed nitrogen spring's stability in use, can not explode when also having guaranteed nitrogen spring ultimate pressure simultaneously, can carry out at the uniform velocity pressure release to nitrogen spring, has guaranteed nitrogen spring's security, has also protected nitrogen spring connected's equipment not to receive the impact.

Drawings

Fig. 1 is a schematic view of an appearance structure of a nitrogen gas spring with good sealing performance according to the present invention;

fig. 2 is a schematic view of an internal structure of a nitrogen gas spring with good sealing performance according to the present invention;

fig. 3 is a schematic sectional view of a front structure of a nitrogen gas spring with good sealing performance according to the present invention;

fig. 4 is a schematic structural view of an explosion-proof plug of a nitrogen gas spring with good sealing performance according to the present invention.

In the figure: the anti-explosion valve comprises a shell 1, a plunger 2, a guide sleeve 3, a dust cover 31, an O-shaped sealing ring 4, an elastic clamping ring 5, a Y-shaped sealing ring 6, a cooling cavity 7, a lubricating cavity 8, a sealing ring 9, an inflation inlet 10, an air inlet pipe 101, a one-way valve 11, a plug 12, an anti-explosion hole 13, an anti-explosion plug 14, a fixed shell 141, a core plug 142, an anti-release ring 143 and a pressure regulating valve 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example one

Referring to fig. 1-4, the nitrogen spring with good sealing performance comprises a shell 1, a plunger 2 and a guide sleeve 3, wherein the guide sleeve 3 is fixedly arranged on the upper part of the inner wall of the shell 1, and the plunger 2 is slidably arranged on the inner side of the guide sleeve 3.

A plurality of O-shaped sealing rings 4 are fixedly arranged between the guide sleeve 3 and the inner wall of the shell 1, a plurality of Y-shaped sealing rings 6 are arranged on the inner side of the guide sleeve 3, the Y-shaped sealing rings 6 are connected with the plunger 2 in a sliding mode, and the sealing effect of the nitrogen spring in a high-pressure state is guaranteed through the O-shaped sealing rings 4 and the Y-shaped sealing rings 6.

Still seted up in the uide bushing 3 and be annular lubricated chamber 8, lubricated intracavity 8 intussuseption is filled with lubricating oil, 3 inboard fixed sealing rings 9 that are equipped with lubricated chamber 8 corresponding of uide bushing, be equipped with a plurality of communicating pipes that link up the inside and outside both sides on sealing ring 9, and communicating pipe and lubricated chamber 8 through connection, lubricating oil in lubricated chamber 8 flows to sealing ring 9 inboard through communicating pipe, and cooperation sealing ring 9 forms the oil film, guarantees sealing ring 9 to nitrogen spring's sealed effect.

Seted up on the diapire in the shell 1 and aerifyd mouthful 10, the intake pipe 101 has been seted up to aerifing mouthful 10 lower extreme level link up, be equipped with check valve 11 in the intake pipe 101, the intake pipe 101 outside still is equipped with end cap 12, fills gas to nitrogen spring through check valve 11 to cooperation end cap 12 further guarantees the sealed effect of check valve 11, guarantees nitrogen spring's leakproofness.

This nitrogen spring seals nitrogen spring through O type sealing washer 4 and Y type sealing washer 6, can effectual assurance nitrogen spring's sealed effect, uses simultaneously that sealing ring 9 cooperates lubricating oil to form the oil film, can further improve nitrogen spring's sealed effect on the one hand, and on the other hand can cooperate lubricating oil to guarantee plunger 2's smooth slip, improves nitrogen spring's result of use.

In this embodiment, as shown in fig. 1 to 3, the guide sleeve 3 is further provided with a corresponding dust cover 31, and the dust cover 31 is clamped between the housing 1 and the plunger 2, so that dirt is prevented from entering the guide sleeve 3, a good sliding effect of the nitrogen spring is ensured, and a use effect of the nitrogen spring is ensured.

In this embodiment, as shown in fig. 1 to 3, an elastic snap ring 5 is further clamped between the guide sleeve 3 and the inner wall of the housing 1, on one hand, the guide sleeve 3 is positioned to ensure the installation accuracy of the guide sleeve 3, on the other hand, the stability of the nitrogen spring during use is also ensured, and the use effect of the nitrogen spring is ensured.

When the nitrogen spring works, long-time sliding friction can generate high heat, in order to avoid the temperature rise to influence the stability of the air pressure in the nitrogen spring, in the embodiment, as shown in fig. 1-3, an annular cooling cavity 7 is further formed in the annular inner wall of the guide sleeve 3, cooling oil is filled in the cooling cavity 7, the upper end of the cooling cavity 7 is further communicated with the top wall of the guide sleeve 3 to form an oil supplementing pipe, the heat is absorbed through the cooling oil, the heat is led out to the shell 1, and the cooling effect on the plunger 2 and the guide sleeve 3 is guaranteed.

In this embodiment, as shown in fig. 1 to 4, the lower end of the inflation inlet 10 is further horizontally connected with a small explosion-proof hole 13 in a penetrating manner, the other end of the explosion-proof hole 13 is connected with an opening penetrating the side wall of the housing 1, an explosion-proof plug 14 is connected in the opening in an internal thread manner, and a pressure regulating valve 15 is further arranged in the opening, when the air pressure in the nitrogen spring reaches a stress limit, the air pushes the explosion-proof plug 14 through the explosion-proof hole 13, and the nitrogen in the nitrogen spring is uniformly released by matching with the pressure regulating valve 15, so that the danger caused by sudden explosion or pressure release of the nitrogen spring is avoided, the connected equipment is also protected, and the damage of the supported equipment caused by pressure release of the nitrogen spring is avoided.

In this embodiment, as shown in fig. 2 to 4, the anti-explosion plug 14 includes an annular fixing shell 141, trapezoidal threads are disposed on an outer side of the fixing shell 141, a corresponding core plug 142 is further disposed on an inner side of the fixing shell 141, an anti-release ring 143 is integrally formed on an outer side of the core plug 142, the anti-release ring 143 is in transition fit with an inner wall of the fixing shell 141, and limit air pressure of the nitrogen spring is set through tightness of fit between the anti-release ring 143 and the fixing shell 141.

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. A nitrogen spring with good sealing performance comprises a shell (1), a plunger (2) and a guide sleeve (3), and is characterized in that the guide sleeve (3) is fixedly arranged on the upper part of the inner wall of the shell (1), and the plunger (2) is slidably arranged on the inner side of the guide sleeve (3);

a plurality of O-shaped sealing rings (4) are fixedly arranged between the guide sleeve (3) and the inner wall of the shell (1), a plurality of Y-shaped sealing rings (6) are arranged on the inner side of the guide sleeve (3), and the Y-shaped sealing rings (6) are connected with the plunger (2) in a sliding manner;

the guide sleeve (3) is also internally provided with an annular lubricating cavity (8), lubricating oil is filled in the lubricating cavity (8), a sealing ring (9) corresponding to the lubricating cavity (8) is fixedly arranged on the inner side of the guide sleeve (3), the sealing ring (9) is provided with a plurality of communicating pipes which run through the inner side and the outer side, and the communicating pipes are in through connection with the lubricating cavity (8);

the air inlet pipe is characterized in that an air charging port (10) is formed in the inner bottom wall of the shell (1), an air inlet pipe (101) is horizontally communicated with the lower end of the air charging port (10), a one-way valve (11) is arranged in the air inlet pipe (101), and a plug (12) is further arranged on the outer side of the air inlet pipe (101).

2. The nitrogen gas spring with good sealing performance is characterized in that a corresponding dust cover (31) is further arranged on the guide sleeve (3), and the dust cover (31) is clamped between the shell (1) and the plunger (2).

3. The nitrogen gas spring with good sealing performance as claimed in claim 1, wherein an elastic snap ring (5) is clamped between the guide sleeve (3) and the inner wall of the housing (1).

4. The nitrogen spring with good sealing performance according to claim 1, characterized in that an annular cooling cavity (7) is further formed in the annular inner wall of the guide sleeve (3), cooling oil is filled in the cooling cavity (7), and an oil supplementing pipe is further formed in the upper end of the cooling cavity (7) and penetrates through the top wall of the guide sleeve (3).

5. The nitrogen gas spring with good sealing performance as claimed in claim 1, wherein a small explosion-proof hole (13) is further horizontally connected to the lower end of the inflation inlet (10) in a penetrating manner, an opening penetrating through the side wall of the housing (1) is connected to the other end of the explosion-proof hole (13), an explosion-proof plug (14) is connected to the opening in a threaded manner, and a pressure regulating valve (15) is further arranged in the opening.

6. The nitrogen gas spring with good sealing performance is characterized in that the explosion-proof plug (14) comprises an annular fixing shell (141), trapezoidal threads are arranged on the outer side of the fixing shell (141), a corresponding core plug (142) is further arranged on the inner side of the fixing shell (141), a falling-off prevention ring (143) is integrally formed on the outer side of the core plug (142), and the falling-off prevention ring (143) is in transition fit with the inner wall of the fixing shell (141).