Low-friction air cylinder capable of preventing piston rod from being stuck

Abstract

The utility model discloses a low-friction air cylinder capable of preventing a piston rod from being stuck, which relates to the technical field of air cylinders and comprises a cylinder body, a cooling sleeve is arranged on the outer surface of the cylinder body, a spiral plate is arranged between the cooling sleeve and the cylinder body, and an upper mounting plate and a lower mounting plate are respectively arranged above and at the bottom of the outer surface of the cylinder body. A piston box is arranged on one side of the upper mounting plate, a liquid storage box is arranged on one side of the top of the lower mounting plate, when the air cylinder operates, the connecting frame extrudes the piston frame in a reciprocating mode, the piston frame drives the piston plate to move under the reset effect of the spring, and when the spring is reset, cooling liquid in the liquid storage box is pumped into the piston box through a liquid pumping pipe, so that the cooling liquid is cooled. And after extrusion is received, cooling liquid is input into the cooling sleeve through the liquid conveying pipe to cool the cylinder body, and under the action of the spiral plate, the flowing path of the cooling liquid is prolonged, so that the cooling liquid cools the cylinder body more sufficiently and thoroughly.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinders, in particular to a low-friction cylinder capable of preventing a piston rod from getting stuck. Background Art

[0002] A cylinder is a cylindrical metal part that guides the piston to perform linear reciprocating motion inside the cylinder. There are two types of cylinders: those that perform linear reciprocating motion and those that perform reciprocating swinging motion. The casing of turbines, rotary piston engines, etc. are also commonly called "cylinders."

[0003] During the movement of the cylinder, the piston rod needs to move back and forth. When the working environment is harsh, dust and debris in the air will adhere to the surface of the piston rod. As the piston rod moves, it is easy for the dust and debris to damage the sealing ring and even cause it to get stuck. Secondly, during the use of the current cylinder, if it is used for a short time, the heat generated by the cylinder movement can be dissipated in time and will not affect the normal use of the cylinder. However, if the cylinder is used continuously for a long time, the piston of the cylinder keeps reciprocating, and the gas in the cylinder is constantly compressed and released, generating heat. Coupled with the friction heat generated by the movement of the piston of the cylinder, the temperature of the compressed air inside the cylinder will gradually become higher and higher, causing the cylinder to work at an ultra-high temperature, resulting in a faster aging of the sealing ring, affecting the service life of the cylinder. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a low-friction cylinder that prevents the piston rod from getting stuck, so as to solve the technical problems mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-friction cylinder for preventing a piston rod from getting stuck, comprising a cylinder body, a cooling jacket being provided on the outer surface of the cylinder body, and a spiral plate being provided between the cooling jacket and the cylinder body, an upper mounting plate and a lower mounting plate being provided above and at the bottom of the outer surface of the cylinder body respectively, a piston box being provided on one side of the upper mounting plate, a liquid storage box being provided on the top side of the lower mounting plate, a liquid infusion tube and a liquid extraction tube being provided at the bottom of the piston box respectively, a piston plate being provided inside the piston box, a piston rack being provided on the top of the piston plate, a spring being provided at the bottom of the piston rack, and a cleaning ring being fixed at one end of the piston rack.

[0006] Furthermore, a cooling cavity is formed between the cooling jacket and the cylinder body, and the cooling cavity is communicated with the liquid storage tank through a liquid return pipe.

[0007] By adopting the above technical solution, the coolant cools down the cylinder body in the cooling chamber, and the coolant that has undergone temperature reduction and heat exchange returns to the liquid storage tank through the return pipe.

[0008] Furthermore, one end of the infusion tube is connected to the cooling chamber, the bottom end of the extraction tube is connected to the liquid storage tank, and the outer surfaces of the infusion tube and the extraction tube are both provided with a one-way valve.

[0009] By adopting the above technical solution, the coolant in the liquid storage tank enters the piston box through the liquid extraction pipe, and the coolant can be input into the cooling cavity through the liquid infusion pipe to cool the cylinder body, and the one-way valve plays a check function.

[0010] Furthermore, a semiconductor refrigerator is installed inside the liquid storage tank.

[0011] By adopting the above technical solution, the semiconductor refrigerator can cool the coolant after heat exchange, thereby preventing the high temperature of the coolant from affecting the cooling effect on the cylinder.

[0012] Furthermore, a connecting frame is fixed to the top end of the piston rod of the cylinder body.

[0013] By adopting the above technical solution, the connecting frame is convenient for articulating the parts that need to be moved, and the connecting frame can be squeezed by the piston frame.

[0014] Furthermore, a heat insulating layer is provided on the inner wall of the cooling jacket away from the cylinder body.

[0015] By adopting the above technical solution, the heat insulating layer can prevent the temperature of the coolant itself from being affected by the external temperature, thereby improving the cooling efficiency of the coolant on the cylinder.

[0016] Furthermore, the inner wall of the cleaning ring is provided with cleaning bristles.

[0017] By adopting the above technical solution, the cleaning bristles can clean the dust and impurities on the piston rod, thereby avoiding the phenomenon of the cylinder being stuck.

[0018] Furthermore, the spring is made of manganese steel.

[0019] By adopting the above technical solution, the manganese steel spring has good toughness, strong elasticity, is not prone to fatigue, and the service life of the spring is greatly improved.

[0020] In summary, the utility model mainly has the following beneficial effects: the utility model is provided with a cleaning ring, a piston frame, a spring, a piston plate, a piston box, a liquid storage box, a cooling jacket, a spiral plate, a liquid extraction pipe, a liquid infusion pipe and a liquid return pipe. When the cylinder is in operation, as the piston rod moves and contracts, the dust and debris attached to the surface of the piston rod will be scraped and separated by the cleaning ring, thereby avoiding the dust and debris from damaging the cylinder sealing ring and causing it to get stuck, thus ensuring the normal use of the device; secondly, when the piston rod moves and contracts, the connecting frame will reciprocately squeeze the piston frame, Under the reset action of the spring, the piston rack will drive the piston plate to move. When the spring is reset, the coolant in the liquid storage tank is pumped into the piston box by the liquid extraction pipe. After being squeezed, the coolant is input into the cooling jacket by the liquid infusion pipe to cool the cylinder body. Under the action of the spiral plate, the flow path of the coolant is extended, so that the coolant can cool the cylinder body more fully and thoroughly. The coolant returns to the liquid storage tank after heat exchange. When the cylinder moves, it uses its own power to cool it down, avoiding high temperature affecting the service life of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the cylinder body of the utility model;

[0023] Figure 3 This is a schematic diagram of the spiral plate structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the piston frame structure of the utility model.

[0025] In the figure: 1. cylinder body; 2. lower mounting plate; 3. cooling jacket; 4. upper mounting plate; 5. connecting frame; 6. piston box; 7. infusion tube; 8. extraction tube; 9. liquid storage tank; 10. semiconductor refrigerator; 11. liquid return pipe; 12. spiral plate; 13. piston plate; 14. piston frame; 15. spring; 16. cleaning ring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0027] The following describes an embodiment of the utility model based on its overall structure.

[0028] Embodiment 1: A low friction cylinder for preventing piston rod from getting stuck, such as Figure 1-Figure 4As shown, it includes a cylinder body 1, the inner wall of which is coated with lubricating oil, thereby reducing the friction during operation, a connecting frame 5 is fixed to the top of the piston rod of the cylinder body 1, the connecting frame 5 is convenient for articulating the parts to be moved, and the connecting frame 5 can squeeze the piston frame 14, a cooling jacket 3 is provided on the outer surface of the cylinder body 1, and a spiral plate 12 is provided between the cooling jacket 3 and the cylinder body 1, an upper mounting plate 4 and a lower mounting plate 2 are respectively provided above and below the outer surface of the cylinder body 1, and the upper mounting plate 4 and the lower mounting plate 2 are used to facilitate the installation and fixation of the cylinder, a piston box 6 is provided on one side of the upper mounting plate 4, a liquid storage box 9 is provided on one side of the top of the lower mounting plate 2, a liquid infusion pipe 7 and a liquid extraction pipe 8 are respectively provided at the bottom of the piston box 6, a piston plate 13 is provided inside the piston box 6, a piston frame 14 is provided on the top of the piston plate 13, and a spring 15 is provided at the bottom of the piston frame 14, a cleaning ring 16 is fixed at one end of the piston frame 14, and the cleaning ring 16 can scrape off dust and impurities when the piston rod moves.

[0029] See also Figure 2 In the above embodiment, a cooling cavity is formed between the cooling jacket 3 and the cylinder body 1, and the cooling cavity is connected to the liquid storage tank 9 through the return pipe 11. The coolant cools the cylinder body in the cooling cavity, and the coolant that has been cooled and heat exchanged returns to the liquid storage tank 9 through the return pipe 11.

[0030] See also Figure 1-Figure 2 In the above embodiment, one end of the infusion tube 7 is connected to the cooling chamber, the bottom end of the extraction tube 8 is connected to the liquid storage tank 9, and the outer surfaces of the infusion tube 7 and the extraction tube 8 are both provided with a one-way valve. The coolant in the liquid storage tank 9 enters the piston box 6 through the extraction tube 8, and the coolant can be input into the cooling chamber through the infusion tube 7 to cool the cylinder body.

[0031] See also Figure 1-Figure 4 In the above embodiment, the inner wall of the cleaning ring 16 is provided with cleaning bristles, which can clean the dust and impurities on the piston rod to avoid the cylinder from getting stuck.

[0032] See also Figure 1-Figure 2 In the above embodiment, the spring 15 is made of manganese steel material. The manganese steel spring 15 has good toughness, strong elasticity, and is not prone to fatigue, which greatly improves the service life of the spring 15.

[0033] Embodiment 2: To facilitate cooling of the coolant and avoid the coolant temperature rising and affecting its cooling effect, refer to Figure 1-Figure 2 A semiconductor refrigerator 10 is installed inside the liquid storage tank 9. The semiconductor refrigerator 10 can cool the coolant after heat exchange to avoid the high temperature of the coolant affecting the cooling effect on the cylinder.

[0034] Embodiment 3: To prevent the coolant in the cooling jacket from being affected by the external temperature, refer to Figure 2 The cooling jacket 3 is provided with a heat insulating layer away from the inner wall of the cylinder body 1. The heat insulating layer can prevent the temperature of the coolant itself from being affected by the external temperature, thereby improving the cooling efficiency of the coolant on the cylinder.

[0035] The implementation principle of this embodiment is as follows: when the cylinder is operating, as the piston rod moves and contracts, the dust and debris attached to its surface will be scraped and separated by the cleaning ring 16, thereby preventing the dust and debris from damaging the cylinder seal ring and getting stuck. When the piston rod moves and contracts, the connecting frame 5 will reciprocate and squeeze the piston frame 14. Under the reset action of the spring 15, the piston frame 14 will drive the piston plate 13 to move. When the spring 15 is reset, the coolant in the liquid storage tank 9 is drawn into the piston box 6 by the liquid extraction pipe 8. After being squeezed, the coolant is input into the cooling jacket 3 by the liquid infusion pipe 7 to cool the cylinder body 1. Under the action of the spiral plate 12, the flow path of the coolant is extended, so that the coolant can cool the cylinder body 1 more fully and thoroughly. The coolant that has undergone heat exchange returns to the liquid storage tank 9, and the semiconductor refrigerator 10 performs cooling treatment on the coolant.

[0036] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A low-friction cylinder for preventing piston rod from getting stuck, comprising a cylinder body (1), characterized in that: The outer surface of the cylinder body (1) is provided with a cooling jacket (3), and a spiral plate (12) is provided between the cooling jacket (3) and the cylinder body (1); an upper mounting plate (4) and a lower mounting plate (2) are provided above and below the outer surface of the cylinder body (1), respectively; a piston box (6) is provided on one side of the upper mounting plate (4), and a liquid storage box (9) is provided on the top side of the lower mounting plate (2); a liquid infusion tube (7) and a liquid extraction tube (8) are provided at the bottom of the piston box (6), respectively; a piston plate (13) is provided inside the piston box (6), and a piston frame (14) is provided at the top of the piston plate (13), and a spring (15) is provided at the bottom of the piston frame (14); a cleaning ring (16) is fixed to one end of the piston frame (14).

2. The low-friction cylinder for preventing piston rod from getting stuck according to claim 1, characterized in that: A cooling chamber is formed between the cooling jacket (3) and the cylinder body (1), and the cooling chamber is connected to the liquid storage tank (9) via a liquid return pipe (11).

3. The low-friction cylinder for preventing piston rod from getting stuck according to claim 2, characterized in that: One end of the liquid infusion tube (7) is connected to the cooling chamber, the bottom end of the liquid extraction tube (8) is connected to the liquid storage tank (9), and the outer surfaces of the liquid infusion tube (7) and the liquid extraction tube (8) are both provided with one-way valves.

4. The low-friction cylinder for preventing piston rod from getting stuck according to claim 1, characterized in that: A semiconductor refrigerator (10) is installed inside the liquid storage tank (9).

5. The low-friction cylinder for preventing piston rod from getting stuck according to claim 1, characterized in that: A connecting frame (5) is fixed to the top end of the piston rod of the cylinder body (1).

6. The low-friction cylinder for preventing piston rod from getting stuck according to claim 1, characterized in that: The inner wall of the cooling jacket (3) away from the cylinder body (1) is provided with a heat insulation layer.

7. The low-friction cylinder for preventing piston rod from getting stuck according to claim 1, characterized in that: The inner wall of the cleaning ring (16) is provided with cleaning bristles.

8. The low-friction cylinder for preventing piston rod from getting stuck according to claim 1, characterized in that: The spring (15) is made of manganese steel.

Images