CN216519353U - High temperature resistant nitrogen spring - Google Patents

Abstract

The utility model discloses a high temperature resistant nitrogen gas spring, which comprises an air chamber, 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, and a valve core assembly is fixedly connected to the upper surface of the insert, The lower surface of the parts is provided with air sealing screws, the inside of the cylinder body is provided with perforations for the installation of the inserts, the inner wall of the air chamber is provided with a middle sleeve, the outer wall of the middle sleeve is in contact with the inner wall of the air chamber, and the air chamber and the middle sleeve are connected. A circlip is arranged between the two, the inner wall of the air chamber is provided with a groove for the circlip to be installed, the inner wall of the middle sleeve is provided with a piston rod, the inner wall of the middle sleeve is fixedly connected to the limiting ring 1, and the lower surface of the piston rod is fixedly connected to the limiting ring. Second, the first limit ring is in contact with the second limit ring. The utility model inflates the air chamber through the valve core assembly on the insert, and seals it through the air sealing screw, the piston rod is lifted up by the force of the gas, and the middle sleeve protects and seals the space between the piston rod and the air chamber. High temperature resistant effect.

Description

A high temperature resistant nitrogen gas spring

technical field

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

Background technique

The nitrogen gas spring is a new type of elastic component with high pressure nitrogen as the working medium. It is small in size, large in elasticity, long in stroke, stable in operation, precise in manufacture, long in service life, flat in the elastic curve, and does not require preloading. Quite extensive, its appearance caters to the requirements of the times.

However, in the actual use process, the traditional nitrogen gas spring lacks the effect of high temperature resistance. Under the high temperature environment, the seal of the nitrogen gas spring is easily damaged, and the problem of gas loss occurs. Therefore, we propose a high temperature resistant nitrogen gas spring.

Utility model content

The purpose of this utility model is to provide a high temperature resistant nitrogen gas spring which has the effect of high temperature resistance, is easy to inflate, is protected by a middle sleeve between the air chamber and the piston rod, and improves the high temperature resistance of the seal, and solves the problems proposed in the background art. The problem.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a high temperature resistant nitrogen gas spring, comprising an air chamber, the lower surface of the air chamber is fixedly connected with a cylinder body, and the upper surface of the cylinder body is provided with an insert, so The upper surface of the insert is fixedly connected with a valve core assembly, the lower surface of the insert is provided with an air-sealing screw, the inside of the cylinder is provided with a perforation for the insert to be installed, and the inner wall of the air chamber is provided with a middle. A sleeve, the outer wall of the middle sleeve is in contact with the inner wall of the air chamber, a circlip is arranged between the air chamber and the middle sleeve, and the inner wall of the air chamber is provided with a groove for the installation of the circlip, the middle sleeve The inner wall of the piston rod is provided with a piston rod, the inner wall of the middle sleeve is fixedly connected to the first limit ring, the lower surface of the piston rod is fixedly connected to the second limit ring, and the first limit ring is in contact with the second limit ring.

Preferably, a sealing ring 1 is fixedly connected between the outer wall of the insert and the cylinder body, and the outer wall of the insert is provided with a groove for the limited installation of the seal ring.

Preferably, the insert is 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, the outer wall of the middle sleeve is provided with a groove for installing the third sealing ring, and the first sealing ring, the second sealing ring and the third sealing ring are High temperature resistant material.

Preferably, an outer dustproof is fixedly connected between the outer wall of the middle sleeve and the air chamber, the outer wall of the middle sleeve is provided with a groove for the installation of the outer dustproof, and the outer dustproof is made of high temperature resistant material.

Preferably, a main seal is fixedly connected between the inner wall of the middle sleeve and the piston rod, the inner wall of the middle sleeve is provided with a groove for the installation of the main seal, the outer wall of the piston rod is fixedly connected with a guide sleeve, the The inner wall of the middle sleeve is provided with a groove for the installation of the guide sleeve, the inner wall of the middle sleeve and the piston rod are fixedly connected with an inner dustproof, and the inner wall of the middle sleeve is provided with a groove for the inner dustproof installation, so The main seal, guide sleeve and inner dustproof material are all high temperature resistant materials.

Compared with the prior art, the beneficial effects of the present utility model are as follows:

1. The utility model realizes the sealing installation of the middle sleeve and the air chamber by setting the middle sleeve, the sealing ring 3, the outer dustproof, the main seal, the guide sleeve and the inner dustproof, and the effect of the middle sleeve sealing and protecting the piston rod. , to solve the problem of gas loss in the high temperature environment of the nitrogen spring, so as to achieve the effect of improving the high temperature resistance of the nitrogen spring and improve its durability;

2. The utility model is provided with inserts, valve core components, air-sealing screws, sealing ring 1, sealing ring 2, limit ring 1 and limit ring 2, so as to realize the effect of easy inflation and sealing protection of the nitrogen spring, and through the The force of the gas makes the piston rod push the first limit ring through the second limit ring, so as to achieve the effect of convenient inflation and installation.

Description of drawings

1 is a schematic diagram of the three-dimensional structure of the present utility model;

Fig. 2 is the front structure sectional view of the utility model;

3 is a schematic diagram of the three-dimensional structure of the insert of the present invention;

FIG. 4 is a schematic view of the enlarged structure of the area A in FIG. 2 of the present utility model.

In the picture: 1. Air chamber; 2. Cylinder block; 3. Inserts; 301. Valve core assembly; 302, Gas sealing screw; 4. Middle sleeve; 5. Circlip; 6. Piston rod; 7. Limit ring 1; 8. Limiting ring 2; 9. Sealing ring 1; 10. Sealing ring 2; 11. Sealing ring 3; 12. External dustproof; 13. Main seal; 14. Guide sleeve; 15. Internal dustproof.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to FIGS. 1 to 4 , the present invention provides a technical solution: a high temperature resistant nitrogen gas spring, comprising an air chamber 1 , a cylinder block 2 is fixedly connected to the lower surface of the air chamber 1 , and a cylinder block 2 is arranged on the upper surface of the cylinder block 2 . Insert 3, the upper surface of the insert 3 is fixedly connected with the valve core assembly 301, the lower surface of the insert 3 is provided with an air sealing screw 302, the interior of the cylinder block 2 is provided with a perforation for the installation of the insert 3, the air chamber 1 The inner wall is provided with a middle sleeve 4, the outer wall of the middle sleeve 4 is in contact with the inner wall of the air chamber 1, a circlip 5 is arranged between the air chamber 1 and the middle sleeve 4, and the inner wall of the air chamber 1 is provided with a concave for the circlip 5 to be installed. Slot, 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 to the limit ring one 7, the lower surface of the piston rod 6 is fixedly connected to the limit ring two 8, the limit ring one 7 and the limit ring two 8 contacts.

The staff can connect the inflatable equipment to the insert 3, inflate the air chamber 1 through the valve core assembly 301, the force of the gas pushes the piston rod 6 to move, and the piston rod 6 pushes the limit ring 1 7 to move through the limit ring 2 8, As a result, the middle sleeve 4 is driven to move along the inner wall of the air chamber 1, and is in contact with the circlip 5 on the inner wall of the air chamber 1, and then the valve core assembly 301 is sealed by the air sealing screw 302 to complete the inflation of the nitrogen spring.

Further, a sealing ring-9 is fixedly connected between the outer wall of the insert 3 and the cylinder body 2, and the outer wall of the insert 3 is provided with a groove for the limited installation of the sealing ring-9.

The insert 3 is fixed in the cylinder block 2 by the sealing ring 1 9, which is convenient for later installation and removal of the insert 3.

Further, the insert 3 has 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 .

Utilizing the cylindrical structure of the insert 3, it is convenient for the staff to install the inflatable equipment, and the second sealing ring 10 improves the sealing performance of the air sealing screw 302.

Further, a sealing ring 3 11 is fixedly connected between the middle sleeve 4 and the air chamber 1, the outer wall of the middle sleeve 4 is provided with a groove for the installation of the sealing ring 3 11, the sealing ring 1 9, the sealing ring 2 10 and the sealing ring 3. 11 are high temperature resistant materials.

When the middle sleeve 4 moves again, the sealing ring 3 11 has the effect of reducing the speed, maintaining the stability of the movement of the middle sleeve 4, and improving the sealing degree between the middle sleeve 4 and the inner wall of the air chamber 1. The sealing ring 19, the sealing ring The second 10 and the third sealing ring 11 are made of high temperature resistant materials, which protect the sealing part of the nitrogen gas spring from temperature resistance to avoid gas loss.

Further, an outer dustproof 12 is fixedly connected between the outer wall of the middle sleeve 4 and the air chamber 1 , the outer wall of the middle sleeve 4 is provided with a groove for the installation of the outer dustproof 12 , and the outer dustproof 12 is made of high temperature resistant material.

The outer dustproof 12 is used for dustproof protection between the middle sleeve 4 and the air chamber 1 , and the outer dustproof 12 is made of high temperature resistant material to improve the temperature resistance protection between the middle sleeve 4 and the air chamber 1 .

Further, the main seal 13 is fixedly connected between the inner wall of the middle sleeve 4 and the piston rod 6, the inner wall of the middle sleeve 4 is provided with a groove for the installation of the main seal 13, the outer wall of the piston rod 6 is fixedly connected with the guide sleeve 14, the middle The inner wall of the sleeve 4 is provided with a groove for the installation of the guide sleeve 14, the inner wall of the middle sleeve 4 and the piston rod 6 are fixedly connected with an inner dustproof 15, and the inner wall of the middle sleeve 4 is provided with a groove for the installation of the inner dustproof 15. , the main seal 13, the guide sleeve 14 and the inner dustproof 15 are all high temperature resistant materials.

Through the main seal 13 and the inner dustproof 15, the contact port between the piston rod 6 and the middle sleeve 4 is sealed and protected. During installation, the staff can use the guide sleeve 14 to align with the groove on the inner wall of the middle sleeve 4, which is convenient for the piston rod. The rod 6 is limited and fixed, and the high temperature resistance of the main seal 13 , the guide sleeve 14 and the inner dustproof 15 is used to realize the sealing protection between the piston rod 6 and the middle sleeve 4 .

Working principle: When the high temperature resistant nitrogen spring is used, the staff inserts the inflatable device into the insert 3 and connects it with the valve core assembly 301, fills the air chamber 1 with nitrogen, and uses the force of the gas to push the piston rod 6 to move, the piston rod 6 Push the limit ring one 7 to move through the limit ring two 8, so that the middle sleeve 4 on the limit ring one 7 moves along the inner wall of the air chamber 1, and the middle sleeve 4 is in contact with the circlip 5 on the inner wall of the air chamber 1. When contacted, the gas in the air chamber 1 is full. Then, the staff inserts the air sealing screw 302 into the insert 3 to seal the valve core assembly 301, and the gas spring can be inflated.

When in use, the external force presses the piston rod 6 to move down, and the gas is gradually increased by the compressed force. When the external force is cancelled, the piston rod 6 is pushed up by the internal gas force, so that the reciprocating motion can achieve the effect of the spring, and the middle sleeve 4 The main seal 13 on the inner wall, the guide sleeve 14 and the inner dustproof 15 are all made of high temperature resistant materials. When the piston rod 6 is stressed, the gas is sealed, which is suitable for working in a high temperature environment.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. A high temperature resistant nitrogen gas spring, comprising an air chamber (1), characterized in that: a cylinder (2) is fixedly connected to the lower surface of the air chamber (1), and the upper surface of the cylinder (2) is provided with There is an insert (3), the upper surface of the insert (3) is fixedly connected with a valve core assembly (301), the lower surface of the insert (3) is provided with a sealing screw (302), the cylinder body The inside of (2) is provided with a perforation for the installation of the insert (3), the inner wall of the air chamber (1) is provided with a middle sleeve (4), and the outer wall of the middle sleeve (4) is connected to the air chamber (1). The inner walls are in contact with each other, a circlip (5) is arranged between the air chamber (1) and the middle sleeve (4), and the inner wall of the air chamber (1) is provided with a groove for the circlip (5) to be installed, so 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 limit ring one (7), and the lower surface of the piston rod (6) is fixedly connected with the limit ring Two (8), the first limiting ring (7) is in contact with the second limiting ring (8). 2. The high temperature resistant nitrogen gas spring according to claim 1, characterized in that: a sealing ring (9) is fixedly connected between the outer wall of the insert (3) and the cylinder (2), and the insert ( 3) The outer wall is provided with a groove for the limit installation of the sealing ring one (9). 3 . The high temperature resistant nitrogen gas spring according to claim 2 , wherein the insert ( 3 ) is a cylindrical structure, and the inner wall of the insert ( 3 ) is fixedly connected with the air sealing screw ( 302 ). 4 . There are two (10) sealing rings. 4. The high temperature resistant nitrogen gas spring according to claim 3, characterized in that: a sealing ring three (11) is fixedly connected between the middle sleeve (4) and the air chamber (1), and the middle sleeve (4) The outer wall of the device is provided with a groove for installing the third sealing ring (11), and the sealing ring one (9), the sealing ring two (10) and the sealing ring three (11) are all high temperature resistant materials. 5. The high temperature resistant nitrogen gas spring according to claim 1, characterized in that: an outer dustproof (12) is fixedly connected between the outer wall of the middle sleeve (4) and the air chamber (1), and the middle sleeve ( 4) The outer wall is provided with a groove for installing the outer dustproof (12), and the outer dustproof (12) is made of high temperature resistant material. 6. The high temperature resistant nitrogen gas spring according to claim 1, characterized in that: a main seal (13) is fixedly connected between the inner wall of the middle sleeve (4) and the piston rod (6), and the middle sleeve (4) is fixedly connected with a main seal (13). ) is provided with a groove for the installation of the main seal (13), the outer wall of the piston rod (6) is fixedly connected with a guide sleeve (14), and the inner wall of the middle sleeve (4) is provided with a guide sleeve (14). ) installation groove, an inner dustproof (15) is fixedly connected between the inner wall of the middle sleeve (4) and the piston rod (6), and the inner wall of the middle sleeve (4) is provided with an inner dustproof (15). ) installation groove, the main seal (13), the guide sleeve (14) and the inner dustproof (15) are all high temperature resistant materials.

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