Upper cavity anti-rust oil cylinder

Abstract

The utility model relates to the technical field of oil cylinders, in particular to an anti-rust oil cylinder with an upper cavity, which comprises a cylinder bottom and a cylinder barrel, a first oil port is arranged on the cylinder bottom, an end cover is arranged on one side of the cylinder barrel, an upper cavity valve is arranged on the cylinder barrel, an external air pipe is arranged on the upper cavity valve, a piston rod is arranged in an inner cavity of the cylinder barrel, and a piston rod is arranged in the piston rod. A piston is arranged on the piston rod, two piston seals are arranged on the piston, and a piston wear-resistant ring is arranged between the two piston seals, so that an upper cavity of the oil cylinder can be isolated from external air and possibly generated water or steam and the like, the upper cavity is prevented from rusting, and the service life of the oil cylinder is greatly prolonged; and meanwhile, the oil cylinder can work stably under the condition that a customer operates improperly.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinders, in particular to an upper cavity rust-proof oil cylinder. Background Art

[0002] The oil cylinder is a hydraulic cylinder. The hydraulic cylinder is a linear motion actuator whose output force is proportional to the effective area of ​​the piston and the pressure difference on both sides. Its function is to convert hydraulic energy into mechanical energy. The input of the hydraulic cylinder is the flow rate and pressure of the fluid, and the output is the linear motion speed and force. The piston of the hydraulic cylinder can complete linear reciprocating motion, and the output linear displacement is limited. The hydraulic cylinder is an energy conversion device that converts hydraulic energy into mechanical energy of reciprocating linear motion.

[0003] For example, a Chinese patent discloses: A cylinder structure, application number: CN201420458805.6, comprising a hollow cooling body with a first flange and a second flange at both ends, a cylinder barrel fixedly connected to the cylinder at one end of the hollow cooling body close to the first flange, and a plug provided at one end of the hollow cooling body close to the second flange and sleeved with the cylinder piston rod; an inlet communicating with the internal cavity of the hollow cooling body is provided at the upper end of the hollow cooling body close to the first flange; and a distance is provided between the end of the cylinder barrel close to the plug and the plug. The utility model has a simple structure and good heat resistance, which increases the service life of the cylinder.

[0004] However, in the above technical scheme, with the rapid development of society and technology, people's requirements for oil cylinders are getting higher and higher. During the use of oil cylinders, single-acting oil cylinders and double-acting oil cylinders are used according to different ranges of use environments. When single-acting oil cylinders are used, outside air will enter the upper cavity of the oil cylinder. The outside air may contain water or water vapor. After these water or water vapor enters the upper cavity of the oil cylinder, it will cause the upper cavity to rust and reduce the service life of the oil cylinder. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The main purpose of the utility model is to provide an upper cavity rust-proof oil cylinder, which can effectively solve the background technology that with the rapid development of society and science and technology, people's requirements for oil cylinders are getting higher and higher. During the use of the oil cylinder, according to the different ranges of the use environment, the single-acting oil cylinder and the double-acting oil cylinder, when the single-acting oil cylinder is in use, the outside air will enter the upper cavity of the oil cylinder, and the outside air may contain water or water vapor. After these water or water vapor enters the upper cavity of the oil cylinder, it will cause the upper cavity to rust and reduce the service life of the oil cylinder.

[0007] (II) Technical solution

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] An upper cavity rust-proof oil cylinder comprises a cylinder bottom and a cylinder barrel, wherein the cylinder bottom is provided with a first oil port, an end cover is provided on one side of the cylinder barrel, an upper cavity valve is provided on the cylinder barrel, an external air pipe is provided on the upper cavity valve, a piston rod is provided in the inner cavity of the cylinder barrel, a piston is provided on the piston rod, two piston seals are provided on the piston, and a piston wear-resistant ring is provided between the two piston seals.

[0010] Preferably, the piston rod passes through the end cover.

[0011] Preferably, the external air pipe includes an air pipe base, a first groove is provided on the air pipe base, an elastic air bag is provided in the first groove, a steering valve is provided at one end of the air pipe base, a second groove is provided on one side of the air pipe base, and a water absorption filter is provided in the second groove.

[0012] Preferably, an air hole is provided on one side of the steering valve close to the air pipe base, and a second oil port and an inlet and outlet are provided on the steering valve.

[0013] Preferably, the first groove passes through the trachea base, the first groove is communicated with the air hole, and the elastic airbag opening is sealed and connected to the inner wall surface of the first groove.

[0014] Preferably, the inlet and outlet are connected to the inner cavity of the cylinder.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] (1) When the utility model is used, the steering valve is started, the second oil port is closed, the air hole is connected with the inlet and outlet, and then the upper chamber valve is opened, and oil is injected into the inner chamber of the cylinder through the first oil port. The air in the upper chamber enters the steering valve through the upper chamber valve, and then enters the elastic airbag through the air hole to collect the air in the upper chamber. When it is changed to a double-acting oil cylinder, the steering valve is started, the air hole is closed, and the second oil port and the inlet and outlet are connected to each other. When the oil cylinder is changed to a double-acting oil cylinder, the scope of application is increased. The upper chamber valve and the external air pipe equipped in the upper chamber can isolate the upper chamber of the oil cylinder from the outside air and possible water or water vapor, etc., to prevent the upper chamber from rusting, greatly extending the service life of the oil cylinder, and at the same time ensuring that the oil cylinder can work stably even if the customer operates it improperly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the cross-sectional structure of an upper cavity rust-proof oil cylinder of the utility model;

[0018] Figure 2 This is a structural schematic diagram of an upper cavity rust-proof oil cylinder of the utility model;

[0019] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of an external air pipe in an upper cavity rust-proof oil cylinder of the utility model;

[0020] Figure 4 The utility model is a schematic diagram of a cross-sectional three-dimensional upward view of the structure of an external air pipe in an upper cavity rust-proof oil cylinder.

[0021] In the figure: 1. cylinder bottom; 2. cylinder barrel; 3. first oil port; 4. end cover; 5. upper chamber valve; 6. external air pipe; 601. air pipe base; 602. first groove; 603. elastic air bag; 604. steering valve; 605. second groove; 606. water suction filter; 607. air hole; 608. second oil port; 609. inlet and outlet; 7. piston rod; 8. piston; 9. piston seal; 10. piston wear ring. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1 and Figure 2 As shown, an upper cavity rust-proof oil cylinder comprises a cylinder bottom 1 and a cylinder barrel 2, wherein the cylinder bottom 1 is provided with a first oil port 3, an end cover 4 is provided on one side of the cylinder barrel 2, an upper cavity valve 5 is provided on the cylinder barrel 2, an external air pipe 6 is provided on the upper cavity valve 5, a piston rod 7 is provided in the inner cavity of the cylinder barrel 2, a piston 8 is provided on the piston rod 7, two piston seals 9 are provided on the piston 8, and a piston wear-resistant ring 10 is provided between the two piston seals 9.

[0024] like Figure 3 and Figure 4 As shown, in another embodiment of the utility model, the external air pipe 6 includes an air pipe base 601, a first groove 602 is provided on the air pipe base 601, an elastic air bag 603 is provided in the first groove 602, a steering valve 604 is provided at one end of the air pipe base 601, a second groove 605 is provided on one side of the air pipe base 601, and a water absorption filter 606 is provided in the second groove 605;

[0025] The steering valve 604 is provided with an air hole 607 on one side close to the air pipe base 601, and the steering valve 604 is provided with a second oil port 608 and an inlet and outlet 609. When the oil cylinder needs to be started, the steering valve 604 is first started, the second oil port 608 is closed, the air hole 607 is connected with the inlet and outlet 609, and then the upper chamber valve 5 is opened, and then oil is injected into the inner cavity of the cylinder 2 through the first oil port 3. The oil pushes the piston 8 to move, and the piston 8 pushes the air in the upper cavity of the cylinder 2 to move to the inlet and outlet 609 through the upper chamber valve 5, and then enters the steering valve 604, and moves to the air hole 607, and then enters the elastic airbag 603 through the air hole 607, and the elastic airbag 603 gradually extends When the oil in the inner cavity of the cylinder 2 gradually leaves the inner cavity of the cylinder 2 through the first oil port 3, the elastic airbag 603 rebounds, so that the air in the elastic airbag 603 re-enters the upper cavity of the cylinder 2 through the air hole 607, the steering valve 604 and the inlet and outlet 609. In the above process, the water absorption filter 606 is responsible for absorbing water or water vapor in the air, which can isolate the upper cavity of the oil cylinder from the outside air and the water or water vapor that may be generated, prevent the upper cavity from rusting, and greatly extend the service life of the oil cylinder. When it is necessary to change to a double-acting oil cylinder, start the steering valve 604, close the air hole 607, and make the second oil port 608 and the inlet and outlet 609 interconnected, so that the oil cylinder can be changed to a double-acting oil cylinder, and the scope of application is increased.

[0026] The working principle of this upper cavity rust-proof oil cylinder:

[0027] When in use, first connect the end cover 4 to the designated equipment, then start the steering valve 604, close the second oil port 608, connect the air hole 607 with the inlet and outlet 609, then open the upper chamber valve 5, and inject oil into the inner cavity of the cylinder 2 through the first oil port 3. The oil pushes the piston 8 to move, pushing the piston 8 to make the air in the upper cavity of the cylinder 2 enter the steering valve 604 through the upper chamber valve 5, and then enter the elastic airbag 603 through the air hole 607. The elastic airbag 603 gradually extends to collect the air in the upper cavity. When the oil in the inner cavity of the cylinder 2 gradually leaves the inner cavity of the cylinder 2 through the first oil port 3, the elastic airbag 603 returns to the inner cavity of the cylinder 2. The elastic airbag 603 is re-entered into the upper chamber of the cylinder 2 through the air hole 607, the steering valve 604 and the inlet and outlet 609. When it is changed into a double-acting oil cylinder, the steering valve 604 is started, the air hole 607 is closed, and the second oil port 608 and the inlet and outlet 609 are connected to each other. When the oil cylinder is changed into a double-acting oil cylinder, the application scope is increased. The upper chamber valve 5 and the external air pipe 6 equipped in the upper chamber can isolate the upper chamber of the oil cylinder from the outside air and the water or water vapor that may be generated, so as to prevent the upper chamber from rusting, greatly prolonging the service life of the oil cylinder, and at the same time ensuring that the oil cylinder can work stably under improper operation.

[0028] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. An upper chamber rust-proof oil cylinder, comprising a cylinder bottom (1) and a cylinder barrel (2), Features: The cylinder bottom (1) is provided with a first oil port (3), one side of the cylinder barrel (2) is provided with an end cover (4), the cylinder barrel (2) is provided with an upper chamber valve (5), the upper chamber valve (5) is provided with an external air pipe (6), a piston rod (7) is provided in the inner cavity of the cylinder barrel (2), a piston (8) is provided on the piston rod (7), two piston seals (9) are provided on the piston (8), and a piston wear-resistant ring (10) is provided between the two piston seals (9); The piston rod (7) passes through the end cover (4); The external air pipe (6) comprises an air pipe base (601), a first groove (602) is arranged on the air pipe base (601), an elastic air bag (603) is arranged in the first groove (602), a steering valve (604) is arranged at one end of the air pipe base (601), a second groove (605) is arranged on one side of the air pipe base (601), and a water absorption filter (606) is arranged in the second groove (605).

2. The upper chamber rust-proof oil cylinder according to claim 1, Features: The steering valve (604) is provided with an air hole (607) on one side close to the air pipe base (601), and the steering valve (604) is provided with a second oil port (608) and an inlet and outlet (609).

3. The upper cavity rust-proof oil cylinder according to claim 2, Features: The first groove (602) passes through the trachea base (601), the first groove (602) and the air hole (607) are communicated with each other, and the opening of the elastic airbag (603) is sealed and connected to the inner wall surface of the first groove (602).

4. The upper cavity rust-proof oil cylinder according to claim 3, Features: The inlet and outlet (609) are in communication with the inner cavity of the cylinder (2).

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