High strength safety nitrogen gas spring

Abstract

The utility model provides a high-strength safety nitrogen spring, which relates to the field of nitrogen springs, including a nitrogen spring housing and a piston rod, wherein a disc is fixedly connected to the top of the piston rod, an annular tube is fixedly connected to the inside of the disc, a plurality of vertical tubes are fixedly connected to the surface of the annular tube, a micro suction pump is fixedly connected to the inside of the nitrogen spring housing, a suction pipe is fixedly connected to the suction end of the micro suction pump, an end of the suction pipe away from the micro suction pump extends to the inside of the disc and is fixedly connected to one side of the annular tube, and a cooling component is arranged inside the nitrogen spring housing. Air is sucked into the inside of the suction pipe by the micro suction pump, and at the same time, dust is sucked from the outer wall of the piston rod under the action of the vertical tube, so as to prevent dust and debris on the outer wall of the piston rod from being transmitted to the inside of the nitrogen spring housing following the rod, thereby improving the service life of the nitrogen spring.

Description

Technical Field

[0001] The utility model relates to a nitrogen spring, in particular to a high-strength safety nitrogen spring, belonging to the technical field of nitrogen springs. Background Art

[0002] Nitrogen spring is a new type of elastic component that uses high-pressure nitrogen as the working medium. It can perform tasks that are difficult to accomplish with conventional elastic components such as metal springs, rubber and air cushions. It simplifies mold design and manufacturing, facilitates mold installation and adjustment, extends the service life of the mold, and ensures the stability of product quality. It can also be designed as a nitrogen spring system to work as a part of the mold.

[0003] The piston rod in the existing nitrogen spring becomes hot due to friction during operation, which reduces the strength of the piston rod and makes it easy for the piston rod to break. At the same time, the outer wall of the piston rod is easily contaminated with dust and debris and is transmitted into the nitrogen spring cylinder through the rod, and it is inconvenient to clean, making the nitrogen spring as a whole relatively dirty, affecting its use. Therefore, we propose a high-strength and safe nitrogen spring. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The purpose of the utility model is to provide a high-strength safety nitrogen spring in order to solve the above problems, so as to solve the problems of dust contamination and heating of the outer wall of the piston rod in the prior art.

[0006] (II) Technical solution

[0007] The utility model is implemented through the following technical solutions: a high-strength safety nitrogen spring, comprising a nitrogen spring shell and a piston rod, the top of the piston rod is fixedly connected with a disc, the inside of the disc is fixedly connected with an annular tube, the surface of the annular tube is fixedly connected with a plurality of vertical tubes, the inside of the nitrogen spring shell is fixedly connected with a micro suction pump, the suction end of the micro suction pump is fixedly connected with an air suction pipe, the end of the air suction pipe away from the micro suction pump extends to the inside of the disc and is fixedly connected to one side of the annular tube, a cooling component is arranged inside the nitrogen spring shell, the cooling component comprises a bellows, the bellows is fixedly installed inside the nitrogen spring shell, a groove is provided inside the nitrogen spring shell, a cold air pipe is fixedly connected to the inner wall of the groove, the surface of the cold air pipe contacts the outer wall of the piston rod, an air inlet pipe is fixedly connected to one side of the bellows, the end of the air inlet pipe away from the bellows is fixedly connected to one side of the cold air pipe, and an exhaust pipe is fixedly connected to one side of the cold air pipe.

[0008] Preferably, the discharge end of the micro suction pump extends to the interior of the bellows, and a filter is fixedly connected to the interior of the bellows.

[0009] Preferably, one end of the exhaust pipe away from the cold air pipe extends to the outside of the nitrogen spring housing, and a one-way valve is fixedly connected to the inside of the exhaust pipe.

[0010] Preferably, a gas valve is fixedly connected to the interior of the nitrogen spring housing, and an output end of the gas valve extends to the interior of the groove.

[0011] Preferably, the interior of the nitrogen spring housing is slidably connected to the outer wall of the piston rod.

[0012] The utility model provides a high-strength safety nitrogen spring, which has the following beneficial effects:

[0013] 1. Use a micro suction pump to suck air into the suction pipe, and at the same time, use the vertical pipe to vacuum the outer wall of the piston rod to prevent dust and debris on the outer wall of the piston rod from entering the interior of the nitrogen spring housing along with the rod, thereby increasing the service life of the nitrogen spring.

[0014] 2. The air is discharged into the bellows through a micro suction pump. The air passes through the cold air duct to cool the outer wall of the piston rod, thus preventing the piston rod from becoming hot due to friction during operation, which may lead to a decrease in the strength of the piston rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 This is a top view of the intercooler air duct of the utility model

[0018] Figure 4 For this utility model Figure 2 Enlarged view of point A in the middle.

[0019]

Main component symbol description

[0020] 1. Nitrogen spring housing; 2. Piston rod; 3. Air valve; 4. Micro suction pump; 5. Suction pipe; 6. Disc; 7. Ring pipe; 8. Vertical pipe; 9. Cooling component; 91. Bellows; 92. Filter; 93. Air inlet pipe; 94. Cold air pipe; 95. Exhaust pipe; 96. One-way valve; 97. Groove. DETAILED DESCRIPTION

[0021] See also Figure 1-Figure 4The embodiment of the utility model provides a high-strength safety nitrogen spring, including a nitrogen spring housing 1 and a piston rod 2. A disc 6 is fixedly connected to the top of the piston rod 2. An annular tube 7 is fixedly connected to the inside of the disc 6. A plurality of vertical tubes 8 are fixedly connected to the surface of the annular tube 7. A micro suction pump 4 is fixedly connected to the inside of the nitrogen spring housing 1. A suction pipe 5 is fixedly connected to the suction end of the micro suction pump 4. The end of the suction pipe 5 away from the micro suction pump 4 extends to the inside of the disc 6 and is fixedly connected to one side of the annular tube 7. The nitrogen A cooling component 9 is provided inside the spring housing 1, and the cooling component 9 includes a bellows 91, which is fixedly installed inside the nitrogen spring housing 1. A groove 97 is provided inside the nitrogen spring housing 1, and a cold air pipe 94 is fixedly connected to the inner wall of the groove 97. The surface of the cold air pipe 94 contacts the outer wall of the piston rod 2. An air inlet pipe 93 is fixedly connected to one side of the bellows 91, and one end of the air inlet pipe 93 away from the bellows 91 is fixedly connected to one side of the cold air pipe 94, and an exhaust pipe 95 is fixedly connected to one side of the cold air pipe 94.

[0022] During operation, the micro air suction pump 4 is started, and the micro air suction pump 4 sucks air into the interior of the annular tube 7 through the air suction pipe 5. At the same time, the outer wall of the piston rod 2 is vacuumed under the action of the vertical pipe 8 to prevent dust and debris on the outer wall of the piston rod 2 from being transmitted into the interior of the nitrogen spring housing 1 along with the rod, thereby increasing the service life of the nitrogen spring. The air enters the interior of the cold air pipe 94 through the air inlet pipe 93 to cool the outer wall of the piston rod 2, thereby preventing the piston rod 2 from becoming hot due to friction during operation, thereby reducing the strength of the piston rod 2.

[0023] Furthermore, the discharge end of the micro air pump 4 extends to the interior of the bellows 91 , and a filter screen 92 is fixedly connected to the interior of the bellows 91 .

[0024] When working, the micro suction pump 4 discharges gas into the interior of the bellows 91 , and the gas is first filtered by the filter screen 92 , and then enters the interior of the cold air pipe 94 through the air inlet pipe 93 .

[0025] Furthermore, one end of the exhaust pipe 95 away from the cold air pipe 94 extends to the outside of the nitrogen spring housing 1 , and a one-way valve 96 is fixedly connected to the inside of the exhaust pipe 95 .

[0026] Furthermore, a gas valve 3 is fixedly connected to the interior of the nitrogen spring housing 1 , and an output end of the gas valve 3 extends to the interior of the groove 97 .

[0027] During operation, the input end of the air valve 3 is connected to the air flow, and the air flow enters the interior of the groove 97 through the air valve 3, so that the piston rod 2 is extended.

[0028] Furthermore, the interior of the nitrogen spring housing 1 is slidably connected to the outer wall of the piston rod 2 .

[0029] Working principle: start the micro air suction pump 4, which sucks air into the annular tube 7 through the air suction pipe 5. At the same time, under the action of the vertical pipe 8, the outer wall of the piston rod 2 is vacuumed to prevent dust and debris on the outer wall of the piston rod 2 from being transmitted to the interior of the nitrogen spring housing 1 along with the rod, thereby improving the service life of the nitrogen spring. Then, the micro air suction pump 4 discharges the gas into the interior of the bellows 91. The gas is first filtered through the filter screen 92, and then enters the interior of the cold air pipe 94 through the air inlet pipe 93, thereby cooling the outer wall of the piston rod 2 to prevent the piston rod 2 from becoming hot due to friction during operation, thereby reducing the strength of the piston rod 2. Finally, the gas is discharged through the exhaust pipe 95.

[0030] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A high-strength safety nitrogen spring, comprising a nitrogen spring housing (1) and a piston rod (2), characterized in that: The top of the piston rod (2) is fixedly connected to a disc (6), the inside of the disc (6) is fixedly connected to an annular tube (7), the surface of the annular tube (7) is fixedly connected to a plurality of vertical tubes (8), the inside of the nitrogen spring housing (1) is fixedly connected to a micro air suction pump (4), the suction end of the micro air suction pump (4) is fixedly connected to an air suction pipe (5), one end of the air suction pipe (5) away from the micro air suction pump (4) extends to the inside of the disc (6) and is fixedly connected to one side of the annular tube (7), and a cooling component (9) is arranged inside the nitrogen spring housing (1), and the cooling component (9) is fixedly connected to the surface of the annular tube (7). The warm component (9) comprises a bellows (91), the bellows (91) being fixedly mounted inside the nitrogen spring housing (1), the nitrogen spring housing (1) being provided with a groove (97), the inner wall of the groove (97) being fixedly connected with a cold air pipe (94), the surface of the cold air pipe (94) being in contact with the outer wall of the piston rod (2), one side of the bellows (91) being fixedly connected with an air inlet pipe (93), one end of the air inlet pipe (93) away from the bellows (91) being fixedly connected with one side of the cold air pipe (94), and one side of the cold air pipe (94) being fixedly connected with an exhaust pipe (95).

2. The high-strength safety nitrogen spring according to claim 1, characterized in that: The discharge end of the micro air suction pump (4) extends to the interior of the bellows (91), and a filter screen (92) is fixedly connected to the interior of the bellows (91).

3. The high-strength safety nitrogen spring according to claim 2 is characterized in that: One end of the exhaust pipe (95) away from the cold air pipe (94) extends to the outside of the nitrogen spring housing (1), and a one-way valve (96) is fixedly connected to the inside of the exhaust pipe (95).

4. The high-strength safety nitrogen spring according to claim 1, characterized in that: An air valve (3) is fixedly connected to the interior of the nitrogen spring housing (1), and an output end of the air valve (3) extends to the interior of the groove (97).

5. The high-strength safety nitrogen spring according to claim 1, characterized in that: The interior of the nitrogen spring housing (1) is slidably connected to the outer wall of the piston rod (2).

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