CN216519353U

CN216519353U - High temperature resistant nitrogen spring

Info

Publication number: CN216519353U
Application number: CN202122898135.2U
Authority: CN
Inventors: 陈表; 陈省
Original assignee: Dongguan Tengfei Hardware Mould Co ltd
Current assignee: Dongguan Tengfei Hardware Mould Co ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-05-13
Anticipated expiration: 2031-11-24

Abstract

The utility model discloses a high-temperature-resistant nitrogen spring which comprises an air chamber, wherein a cylinder body is fixedly connected to the lower surface of the air chamber, an insert is arranged on the upper surface of the cylinder body, an air valve core assembly is fixedly connected to the upper surface of the insert, an air sealing screw is arranged on the lower surface of the insert, a through hole for mounting the insert is formed in the cylinder body, a middle sleeve is arranged on the inner wall of the air chamber, the outer wall of the middle sleeve is in contact with the inner wall of the air chamber, a clamp spring is arranged between the air chamber and the middle sleeve, a groove for mounting the clamp spring is formed in the inner wall of the air chamber, a piston rod is arranged on the inner wall of the middle sleeve, a first limiting ring is fixedly connected to the inner wall of the middle sleeve, a second limiting ring is fixedly connected to the lower surface of the piston rod, and the first limiting ring is in contact with the second limiting ring. According to the utility model, the air chamber is inflated through the valve core assembly on the insert, the valve core assembly is sealed through the air sealing screw, the piston rod is jacked up by using the force of air, the middle sleeve protects and seals the space between the piston rod and the air chamber, and the high-temperature resistant effect is achieved.

Description

High temperature resistant nitrogen spring

Technical Field

The utility model relates to the technical field of nitrogen springs, in particular to a high-temperature-resistant nitrogen spring.

Background

The nitrogen spring is a novel elastic component using high-pressure nitrogen as a working medium, and has the advantages of small volume, large elasticity, long stroke, stable work, precise manufacture, long service life, gentle elasticity curve and no need of pre-tightening, and the nitrogen spring has quite wide application range and meets the requirements of the times.

However, in the actual use process, the traditional nitrogen spring lacks a high-temperature resistant effect, and the sealing part of the nitrogen spring is easy to damage under a high-temperature environment, so that the problem of gas loss is solved, and therefore the high-temperature resistant nitrogen spring is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide the high-temperature-resistant nitrogen spring which has the high-temperature-resistant effect, is convenient to inflate, improves the high-temperature resistance of a sealing part by protecting the air chamber and the piston rod through the middle sleeve, and solves the problems in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a high temperature resistant nitrogen spring, includes the air chamber, the lower fixed surface of air chamber is connected with the cylinder body, the upper surface of cylinder body is provided with the mold insert, the upper surface fixed surface of mold insert is connected with valve core subassembly, the lower surface of mold insert is provided with the gas seal screw, the perforation that supplies the mold insert installation is seted up to the inside of cylinder body, the inner wall of air chamber is provided with well cover, the outer wall of well cover contacts with the inner wall of air chamber, be provided with the jump ring between air chamber and the well cover, the recess that supplies the jump ring installation is seted up to the inner wall of air chamber, the inner wall of well cover is provided with the piston rod, the inner wall fixedly connected with spacing ring one of well cover, the lower fixed surface of piston rod is connected with spacing ring two, spacing ring one contacts with spacing ring two.

Preferably, fixedly connected with sealing washer one between the outer wall of mold insert and the cylinder body, the recess that supplies a spacing installation of sealing washer is seted up to the outer wall of mold insert.

Preferably, the insert is of a cylindrical structure, and a second sealing ring is fixedly connected between the inner wall of the insert and the air sealing screw.

Preferably, a third sealing ring is fixedly connected between the middle sleeve and the air chamber, a groove for mounting the third sealing ring is formed in the outer wall of the middle sleeve, and the first sealing ring, the second sealing ring and the third sealing ring are made of high-temperature-resistant materials.

Preferably, the outer wall of the middle sleeve and the air chamber are fixedly connected with each other for external dust prevention, the outer wall of the middle sleeve is provided with a groove for external dust prevention installation, and the external dust prevention is made of high-temperature-resistant materials.

Preferably, fixedly connected with main seal between the inner wall of well cover and the piston rod, the recess that supplies main seal installation is seted up to the inner wall of well cover, the outer wall fixedly connected with uide bushing of piston rod, the recess that supplies the uide bushing installation is seted up to the inner wall of well cover, it is dustproof in the fixedly connected with between the inner wall of well cover and the piston rod, the recess of dustproof installation in supplying is seted up to the inner wall of well cover, main seal, uide bushing and interior dustproof be high temperature resistant material.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the middle sleeve, the sealing ring III, the outer dustproof, the main seal, the guide sleeve and the inner dustproof are arranged, so that the sealed installation of the middle sleeve and the air chamber is realized, and the effect of sealing and protecting the piston rod by the middle sleeve is realized, and the problem of gas loss of the nitrogen spring in a high-temperature environment is solved, so that the effect of improving the high-temperature resistance of the nitrogen spring is achieved, and the durability of the nitrogen spring is improved;

2. according to the utility model, the insert, the valve core assembly, the air sealing screw, the first sealing ring, the second sealing ring, the first limiting ring and the second limiting ring are arranged, so that the effect of convenient inflation and sealing protection of the nitrogen spring is realized, and the piston rod pushes the first limiting ring through the second limiting ring by the force of gas, so that the effect of convenient inflation and installation is achieved.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a cross-sectional view of a front view of the present invention;

FIG. 3 is a schematic perspective view of an insert according to the present invention;

FIG. 4 is an enlarged view of the area A in FIG. 2 according to the present invention.

In the figure: 1. an air chamber; 2. a cylinder body; 3. an insert; 301. a valve core assembly; 302. sealing the gas screw; 4. a middle sleeve; 5. a clamp spring; 6. a piston rod; 7. a first limiting ring; 8. a second limiting ring; 9. a first sealing ring; 10. a second sealing ring; 11. a third sealing ring; 12. dust prevention is carried out; 13. primary sealing; 14. a guide sleeve; 15. and the inner part is dustproof.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a technical solution: the utility model provides a high temperature resistant nitrogen spring, including air chamber 1, the lower fixed surface of air chamber 1 is connected with cylinder body 2, the upper surface of cylinder body 2 is provided with mold insert 3, the last fixed surface of mold insert 3 is connected with valve inside subassembly 301, the lower surface of mold insert 3 is provided with seals gas screw 302, the perforation that supplies the installation of mold insert 3 is seted up to the inside of cylinder body 2, the inner wall of air chamber 1 is provided with well cover 4, the outer wall of well cover 4 contacts with the inner wall of air chamber 1, be provided with jump ring 5 between air chamber 1 and the well cover 4, the recess that supplies jump ring 5 to install is seted up to the inner wall of air chamber 1, the inner wall of well cover 4 is provided with piston rod 6, the inner wall fixedly connected with spacing ring one 7 of well cover 4, the lower fixed surface fixedly connected with spacing ring two 8 of piston rod 6, spacing ring one 7 contacts with spacing ring two 8.

The staff can be connected equipment of aerifing with mold insert 3, aerifys air chamber 1 through valve inside subassembly 301, and piston rod 6 is pushed to gaseous power and removes, and piston rod 6 promotes the spacing ring 7 through two 8 and removes, and cover 4 removes along the inner wall of air chamber 1 in the drive from this to contact with the jump ring 5 of air chamber 1 inner wall, the rethread seals gas screw 302 and seals valve inside subassembly 301, can accomplish the aerifing of nitrogen gas spring.

Further, fixedly connected with sealing washer 9 between the outer wall of mold insert 3 and cylinder body 2, the recess that supplies the spacing installation of sealing washer 9 is seted up to the outer wall of mold insert 3.

Through 9 fixed cylinder bodies 2 in with mold insert 3 of sealing washer, the later stage installation of being convenient for and dismantle mold insert 3.

Further, the insert 3 is of a cylindrical structure, and a second sealing ring 10 is fixedly connected between the inner wall of the insert 3 and the air sealing screw 302.

The cylindrical structure of the insert 3 is utilized, so that workers can conveniently install the inflation equipment, and the sealing ring II 10 improves the sealing performance of the air sealing screw 302.

Furthermore, a third sealing ring 11 is fixedly connected between the middle sleeve 4 and the air chamber 1, a groove for mounting the third sealing ring 11 is formed in the outer wall of the middle sleeve 4, and the first sealing ring 9, the second sealing ring 10 and the third sealing ring 11 are made of high-temperature-resistant materials.

When the middle sleeve 4 moves again, the third sealing ring 11 plays a role in reducing the speed, the stability of the movement of the middle sleeve 4 is kept, the sealing degree between the middle sleeve 4 and the inner wall of the air chamber 1 is improved, the first sealing ring 9, the second sealing ring 10 and the third sealing ring 11 are made of high-temperature-resistant materials, the sealing position of the nitrogen spring is protected in a temperature-resistant mode, and gas loss is avoided.

Furthermore, an outer dustproof 12 is fixedly connected between the outer wall of the middle sleeve 4 and the air chamber 1, a groove for installing the outer dustproof 12 is formed in the outer wall of the middle sleeve 4, and the outer dustproof 12 is made of high-temperature-resistant materials.

Carry out dustproof protection between centering sleeve 4 and the air chamber 1 through outer dustproof 12 to outer dustproof 12 is high temperature resistant material, improves the temperature resistant protection between centering sleeve 4 and the air chamber 1.

Further, fixedly connected with main seal 13 between the inner wall of well cover 4 and piston rod 6, the recess that supplies main seal 13 to install is seted up to the inner wall of well cover 4, the outer wall fixedly connected with uide bushing 14 of piston rod 6, the recess that supplies uide bushing 14 to install is seted up to the inner wall of well cover 4, dustproof 15 in the fixedly connected with between the inner wall of well cover 4 and the piston rod 6, dustproof 15 recess of installing in supplying is seted up to the inner wall of well cover 4, main seal 13, uide bushing 14 is high temperature resistant material with interior dustproof 15.

Through main seal 13 and interior dustproof 15, seal the protection to the contact opening between piston rod 6 and well cover 4, when the installation, staff's accessible uide bushing 14 aligns with the recess of well 4 inner walls of cover, and the piston rod 6 of being convenient for is spacing fixed, utilizes main seal 13, uide bushing 14 and interior dustproof 15's high temperature resistance to realize the sealed protection between piston rod 6 and well cover 4.

The working principle is as follows: when the high-temperature-resistant nitrogen spring is used, a worker inserts inflation equipment into the insert 3 and is connected with the valve core assembly 301, nitrogen is inflated into the air chamber 1, the piston rod 6 is pushed to move by utilizing the force of the gas, the piston rod 6 pushes the first limiting ring 7 to move through the second limiting ring 8, the middle sleeve 4 on the first limiting ring 7 moves along the inner wall of the air chamber 1, when the middle sleeve 4 is in contact with the clamp spring 5 on the inner wall of the air chamber 1, the gas in the air chamber 1 is full, then, the worker inserts the air sealing screw 302 into the insert 3 to seal the valve core assembly 301, and the inflation of the nitrogen spring can be completed.

During the use, piston rod 6 is pressed down to external force and is moved, and gas is crescent by compressive force, and when external force cancelled, piston rod 6 promotes to rise at inside gas power, and reciprocating motion like this can reach the effect of spring to the main seal 13, uide bushing 14, the interior dustproof 15 of well 4 inner walls of cover are high temperature resistant material, when piston rod 6 atress, seal gas, are fit for working under the high temperature environment.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high temperature resistant nitrogen gas spring, includes gas chamber (1), its characterized in that: the lower surface of the air chamber (1) is fixedly connected with a cylinder body (2), the upper surface of the cylinder body (2) is provided with an insert (3), the upper surface of the insert (3) is fixedly connected with an air valve core assembly (301), the lower surface of the insert (3) is provided with an air sealing screw (302), a through hole for installing the insert (3) is formed in the cylinder body (2), the inner wall of the air chamber (1) is provided with a middle sleeve (4), the outer wall of the middle sleeve (4) is contacted with the inner wall of the air chamber (1), a clamp spring (5) is arranged between the air chamber (1) and the middle sleeve (4), the inner wall of the air chamber (1) is provided with a groove for installing the clamp spring (5), the inner wall of the middle sleeve (4) is provided with a piston rod (6), the inner wall of the middle sleeve (4) is fixedly connected with a first limit ring (7), the lower surface of the piston rod (6) is fixedly connected with a second limit ring (8), the first limiting ring (7) is in contact with the second limiting ring (8).

2. The high temperature resistant nitrogen spring of claim 1, wherein: fixedly connected with sealing washer (9) between the outer wall of mold insert (3) and cylinder body (2), the recess that supplies spacing installation of sealing washer (9) is seted up to the outer wall of mold insert (3).

3. The high temperature resistant nitrogen spring of claim 2, wherein: the insert (3) is of a cylindrical structure, and a second sealing ring (10) is fixedly connected between the inner wall of the insert (3) and the air sealing screw (302).

4. The high temperature resistant nitrogen spring of claim 3, wherein: fixedly connected with sealing washer three (11) between well cover (4) and air chamber (1), the recess that supplies sealing washer three (11) to install is seted up to the outer wall of well cover (4), sealing washer one (9), sealing washer two (10) and sealing washer three (11) are high temperature resistant material.

5. The high temperature resistant nitrogen spring of claim 1, wherein: fixedly connected with prevents dust (12) outward between the outer wall of well cover (4) and air chamber (1), the recess that supplies outer dustproof (12) installation is seted up to the outer wall of well cover (4), outer dustproof (12) are high temperature resistant material.

6. The high temperature resistant nitrogen spring of claim 1, wherein: fixedly connected with main seal (13) between the inner wall of well cover (4) and piston rod (6), the recess that supplies main seal (13) installation is seted up to the inner wall of well cover (4), outer wall fixedly connected with uide bushing (14) of piston rod (6), the recess that supplies uide bushing (14) installation is seted up to the inner wall of well cover (4), dustproof (15) in the fixedly connected with between the inner wall of well cover (4) and piston rod (6), the recess of dustproof (15) installation in the confession is seted up to the inner wall of well cover (4), main seal (13), uide bushing (14) are high temperature resistant material with interior dustproof (15).