Pneumatic single-action actuator with built-in guide rod

Abstract

The pneumatic single-action actuator with the built-in guide rod comprises a cylinder body, an ejector rod is arranged at the bottom of the cylinder body, an end cover is arranged on the surface of the ejector rod in a sleeved mode, a rear cover is arranged at the bottom of the surface of the end cover in a sleeved mode, the end cover is fixedly connected with the cylinder body, a base body is fixedly connected to the top of the ejector rod, and the guide rod is arranged on the base body. A spring is fixedly connected between the seat body and the top of an inner cavity of the barrel body, a cylinder barrel is arranged at the bottom of the barrel body, a front cover is fixedly connected to the bottom of the cylinder barrel, guide rods are arranged on the periphery of the top of the front cover, and the rear cover is arranged on the surfaces of the guide rods in a sleeving mode. The first nut is connected with the movable rod, the rear cover and all structures on the rear cover can be conveniently and integrally disassembled and assembled, compared with a traditional actuator, the whole design is lighter in mass and smaller in size, under the action of the guide rod, the piston moves up and down more stably, the operation efficiency can be improved, and the service life of the actuator is prolonged. And the use of people is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid control, in particular to a pneumatic single-acting actuator with a built-in guide rod. Background Art

[0002] Fluid control is the use of various fluid control elements and hydraulic system accessories to form a closed control loop for automatic control. The most common ones are valves, and actuators are used during the use of valves.

[0003] The existing actuator is large in size and weight during use, and is not easy to disassemble and assemble. During use, it relies on piston movement to achieve exhaust and suction, and the piston movement is not smooth, resulting in reduced control efficiency and causing inconvenience to people's use. A pneumatic single-acting actuator with a built-in guide rod is proposed in this regard. Utility Model Content

[0004] The utility model aims to provide a pneumatic single-acting actuator with a built-in guide rod, which has the advantages of stable operation and small size.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a built-in guide rod pneumatic single-acting actuator, comprising a cylinder, a push rod is arranged at the bottom of the cylinder, an end cover is sleeved on the surface of the push rod, a rear cover is sleeved on the bottom of the end cover surface, the end cover is fixedly connected to the cylinder, the top of the push rod is fixedly connected to a seat body, a spring is fixedly connected between the seat body and the top of the cylinder inner cavity, a cylinder is arranged at the bottom of the cylinder, a front cover is fixedly connected to the bottom of the cylinder, guide rods are arranged around the top of the front cover, the rear cover is sleeved on the surface of the guide rod, a piston is arranged at the bottom between the two sides of the cylinder inner cavity, the bottom of the guide rod penetrates to the bottom of the piston, the bottom of the push rod is fixedly connected to a first nut, the bottom of the push rod is arranged on the bottom of the push rod, the bottom of the movable rod penetrates to the bottom of the front cover, an exhaust nozzle is opened on the right side of the top of the rear cover, and an air inlet nozzle is opened on the right side of the bottom of the front cover.

[0006] As a preferred solution, a second nut is threadedly connected to the surface of the guide rod, and the movable rod and the push rod are fixedly connected via a first nut.

[0007] As a preferred solution, a first wear-resistant belt is sleeved on the surface of the movable rod, a first sealing ring is sleeved on the surface of the first wear-resistant belt, and the first sealing ring is fixedly connected to the piston.

[0008] As a preferred solution, a second wear-resistant belt is sleeved on the bottom of the guide rod surface, a second sealing ring is sleeved on the surface of the second wear-resistant belt, and the second sealing ring is fixedly connected to the piston.

[0009] As a preferred solution, a hook is fixedly connected to the top of the cylinder body, and the rear cover is in contact with the cylinder barrel.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] 1. The utility model is connected to the movable rod through the first nut, and it is convenient to disassemble and assemble the rear cover and all the structures on the rear cover as a whole. Compared with the traditional actuator, the whole design is lighter and smaller in size. Under the action of the guide rod, the piston moves up and down more smoothly, thereby improving the efficiency during operation and facilitating people's use.

[0012] 2. The utility model can facilitate users to disassemble the push rod by providing the second nut, and can make the piston and the front cover and the movable rod have good sealing properties at the connection by providing the first wear-resistant belt and the first sealing ring, and can make the guide rod and the piston have good sealing properties at the connection by providing the second wear-resistant belt and the second sealing ring, and can facilitate users to take the entire instrument by providing the hook. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the structure of the utility model;

[0015] Figure 3 It is the front view of the structure of the utility model.

[0016] In the figure: 1. cylinder body; 2. push rod; 3. end cover; 4. rear cover; 5. seat body; 6. spring; 7. cylinder barrel; 8. front cover; 9. guide rod; 10. piston; 11. first nut; 12. movable rod; 13. exhaust nozzle; 14. intake nozzle; 15. first wear-resistant belt; 16. first sealing ring; 17. second wear-resistant belt; 18. second sealing ring; 19. second nut. DETAILED DESCRIPTION

[0017] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0018] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0019] Embodiment 1:

[0020] See also Figure 1-Figure 3 As shown, the utility model provides a built-in guide rod pneumatic single-acting actuator, including a cylinder 1, a push rod 2 is arranged at the bottom of the cylinder 1, an end cover 3 is sleeved on the surface of the push rod 2, a rear cover 4 is sleeved on the bottom of the surface of the end cover 3, the end cover 3 is fixedly connected to the cylinder 1, a seat body 5 is fixedly connected to the top of the push rod 2, a spring 6 is fixedly connected between the seat body 5 and the top of the inner cavity of the cylinder 1, a cylinder 7 is arranged at the bottom of the cylinder 1, a front cover 8 is fixedly connected to the bottom of the cylinder 7, guide rods 9 are arranged around the top of the front cover 8, the rear cover 4 is sleeved on the surface of the guide rod 9, a piston 10 is arranged at the bottom between the two sides of the inner cavity of the cylinder 7, the bottom of the guide rod 9 penetrates to the bottom of the piston 10, a first nut 11 is fixedly connected to the bottom of the push rod 2, a movable rod 12 is arranged at the bottom of the push rod 2, the bottom of the movable rod 12 penetrates to the bottom of the front cover 8, an exhaust nozzle 13 is opened on the right side of the top of the rear cover 4, and an air inlet nozzle 14 is opened on the right side of the bottom of the front cover 8.

[0021] The technical solution sets up the application of the guide rod 9 and the first nut 11, which is connected to the movable rod 12 through the first nut 11, and is convenient for overall disassembly and assembly of the rear cover 4 and all structures on the rear cover 4. The entire design is lighter and smaller in size than the traditional actuator, and under the action of the guide rod 9, the piston 10 moves up and down more smoothly, thereby improving the efficiency during operation and facilitating people's use.

[0022] Embodiment 2:

[0023] On the basis of embodiment 1, the present invention is as follows Figure 1-Figure 3 As shown, it is disclosed that the surface of the guide rod 9 is threadedly connected with a second nut 19, the movable rod 12 and the push rod 2 are fixedly connected by the first nut 11, the surface of the movable rod 12 is sleeved with a first wear-resistant belt 15, the surface of the first wear-resistant belt 15 is sleeved with a first sealing ring 16, and the first sealing ring 16 is fixedly connected to the piston 10.

[0024] By adopting the above technical solution, the second nut 19 can facilitate the user to disassemble the push rod 2, and the first wear-resistant belt 15 and the first sealing ring 16 can ensure good sealing at the connection between the piston 10 and the front cover 8 and the movable rod 12.

[0025] Embodiment three:

[0026] The utility model Figure 1-Figure 3 As shown, it is disclosed that the bottom of the guide rod 9 is sleeved with a second wear-resistant belt 17, the surface of the second wear-resistant belt 17 is sleeved with a second sealing ring 18, the second sealing ring 18 is fixedly connected to the piston 10, the top of the cylinder body 1 is fixedly connected with a hook, and the rear cover 4 is in contact with the cylinder barrel 7.

[0027] By adopting the above technical solution, the second wear-resistant belt 17 and the second sealing ring 18 can ensure good sealing at the connection between the guide rod 9 and the piston 10, and the hook can facilitate users to take the entire instrument.

[0028] The working principle of the utility model is: the movable rod 12 is retracted, and air enters the cylinder 7 through the air inlet nozzle 14, and pushes the piston 10 and the push rod 2 to move upward, and at the same time, the spring 6 is compressed by the seat body 5, and the air at the top of the inner cavity of the cylinder 7 is discharged through the exhaust nozzle 13. When the movable rod 12 is extended, the spring 6 is reset to push the push rod 2 and the piston 10 to move downward, and the air at the bottom of the inner cavity of the cylinder 7 is discharged from the air inlet nozzle 14. Compared with traditional pneumatic actuators, it is lighter, smaller in size, and easier to disassemble and assemble. When the piston 10 moves, under the guiding action of the guide rod 9, the movement of the piston 10 is more stable and reliable, more efficient, and convenient for people to use.

[0029] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0030] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A pneumatic single-acting actuator with an internal guide rod, comprising a cylinder (1), characterized in that: A push rod (2) is provided at the bottom of the cylinder (1), an end cover (3) is sleeved on the surface of the push rod (2), a rear cover (4) is sleeved on the bottom of the surface of the end cover (3), the end cover (3) is fixedly connected to the cylinder (1), a seat body (5) is fixedly connected to the top of the push rod (2), a spring (6) is fixedly connected between the seat body (5) and the top of the inner cavity of the cylinder (1), a cylinder (7) is provided at the bottom of the cylinder (1), a front cover (8) is fixedly connected to the bottom of the cylinder (7), and guides are provided on all sides of the top of the front cover (8). The guide rod (9) is provided at the bottom between the two sides of the inner cavity of the cylinder (7), the bottom of the guide rod (9) penetrates to the bottom of the piston (10), the bottom of the push rod (2) is fixedly connected with a first nut (11), the bottom of the push rod (2) is provided with a movable rod (12), the bottom of the movable rod (12) penetrates to the bottom of the front cover (8), the right side of the top of the rear cover (4) is provided with an exhaust nozzle (13), and the right side of the bottom of the front cover (8) is provided with an air inlet nozzle (14).

2. A pneumatic single-acting actuator with built-in guide rod according to claim 1, characterized in that: The surface of the guide rod (9) is threadedly connected with a second nut (19), and the movable rod (12) and the top rod (2) are fixedly connected via a first nut (11).

3. The pneumatic single-acting actuator with built-in guide rod according to claim 1, characterized in that: The surface of the movable rod (12) is covered with a first wear-resistant belt (15), the surface of the first wear-resistant belt (15) is covered with a first sealing ring (16), and the first sealing ring (16) is fixedly connected to the piston (10).

4. The pneumatic single-acting actuator with built-in guide rod according to claim 1, characterized in that: The bottom of the surface of the guide rod (9) is sleeved with a second wear-resistant belt (17), the surface of the second wear-resistant belt (17) is sleeved with a second sealing ring (18), and the second sealing ring (18) is fixedly connected to the piston (10).

5. The pneumatic single-acting actuator with built-in guide rod according to claim 1, characterized in that: A hook is fixedly connected to the top of the cylinder body (1), and the rear cover (4) is in contact with the cylinder barrel (7).

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