阅读说明：本技术 一种长寿命气动执行器 (Long-life pneumatic actuator ) 是由 黄文博 李花丽 仇玉森 于 2019-12-18 设计创作，主要内容包括：本发明公开了一种长寿命气动执行器,包括缸体、底座和内缸,所述底座的顶部固定安装有固定台,所述固定台的内部设置有内腔,所述固定台的顶部固定安装有缸体,所述缸体的表面设置有接气台,所述接气台的内部设置有导气孔,所述缸体的顶部旋转安装有端盖,所述端盖的顶部固定安装有滑套,所述滑套的外围滑动安装有帽盖,所述缸体的内部设置有内缸,所述内缸的内部滑动安装有膜片,所述膜片的内部滑动安装有固定杆,所述膜片的上端固定安装有阀杆。本发明通过设置有一系列的结构使本装置在使用的过程中取消可与外界有接触的孔位,保证执行器内部配件的使用功能,确保执行器使用寿命。(The invention discloses a long-life pneumatic actuator which comprises a cylinder body, a base and an inner cylinder, wherein a fixed table is fixedly installed at the top of the base, an inner cavity is formed in the fixed table, the cylinder body is fixedly installed at the top of the fixed table, an air receiving table is arranged on the surface of the cylinder body, an air guide hole is formed in the air receiving table, an end cover is rotatably installed at the top of the cylinder body, a sliding sleeve is fixedly installed at the top of the end cover, a cap cover is installed on the periphery of the sliding sleeve in a sliding mode, the inner cylinder is arranged in the cylinder body, a diaphragm is installed in the inner cylinder in a sliding mode, a fixed rod is installed in the diaphragm in a sliding mode, and a valve rod. According to the invention, a series of structures are arranged, so that hole sites which can be in contact with the outside are eliminated in the using process of the device, the using function of the parts in the actuator is ensured, and the service life of the actuator is ensured.)

1. The utility model provides a long-life pneumatic actuator, includes cylinder body (2), base (4) and inner cylinder (7), its characterized in that: the top fixed mounting of base (4) has fixed station (3), the inside of fixed station (3) is provided with inner chamber (301), the top fixed mounting of fixed station (3) has cylinder body (2), the surface of cylinder body (2) is provided with connects gas platform (5), the inside that connects gas platform (5) is provided with air guide hole (501), end cover (6) are installed to the top rotation of cylinder body (2), the top fixed mounting of end cover (6) has sliding sleeve (10), the peripheral slidable mounting of sliding sleeve (10) has cap (1), the inside of cylinder body (2) is provided with inner cylinder (7), the inside slidable mounting of inner cylinder (7) has diaphragm (12), the inside slidable mounting of diaphragm (12) has dead lever (8), the upper end fixed mounting of diaphragm (12) has valve rod (9).

2. The long life pneumatic actuator of claim 1, wherein: a fixing bolt (401) is rotatably mounted in the base (4) on the periphery of the fixing table (3), and an anti-oxidation layer is coated on the surface of the fixing bolt (401).

3. The long life pneumatic actuator of claim 1, wherein: the bottom of end cover (6) is fixed with external screw thread platform (601), the surface of external screw thread platform (601) is provided with the external screw thread.

4. The long life pneumatic actuator of claim 1, wherein: a return spring (11) is fixedly installed between the end cover (6) on the periphery of the valve rod (9) and the diaphragm (12), and an anti-corrosion layer is coated on the surface of the return spring (11).

5. The long life pneumatic actuator of claim 1, wherein: the surface of the cylinder body (2) at the upper end of the gas receiving platform (5) is provided with a mark (201), and a waterproof film is attached to the surface of the mark (201).

6. The long life pneumatic actuator of claim 1, wherein: an internal thread table (202) is fixedly installed inside a cylinder body (2) at the upper end of the diaphragm (12), and the internal thread table (202) is overlapped with the external thread table (601).

Technical Field

The invention relates to the technical field of biological medicines, in particular to a long-life pneumatic actuator.

Background

The pneumatic actuator is an actuating device for opening and closing or adjusting a valve by air pressure, is also called a pneumatic actuating mechanism or a pneumatic device, is generally called a pneumatic head, is sometimes provided with a certain auxiliary device, and is commonly used with a valve positioner and a hand wheel mechanism.

Through the retrieval, patent publication No. CN204328160U discloses a pneumatic actuator, including spring module and executor body, be equipped with transmission module between spring module and the executor body, executor body side is connected with pneumatic module, and the signal recoverer is installed at executor body top, and the executor body still is connected with a manual hydraulic module, is equipped with the elbow pipe in the executor body, installs the muffler in the elbow pipe.

The existing long-life pneumatic actuator has the defects that:

1. the actuator used on chromatographic equipment in the biomedical industry needs to be verified by a salt spray test, the common actuator has more hole sites and is easy to contact with the outside, and all accessories in the actuator can be damaged under the environment of the specific condition of the salt spray test, so that the service life of the cylinder actuator is shortened;

2. the top of executor receives the damage easily when using, and is inconvenient for the staff to use.

Therefore, a long-service-life pneumatic actuator is provided to solve the existing problems.

Disclosure of Invention

The present invention is directed to a long-life pneumatic actuator to solve the above problems of the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a long-life pneumatic actuator, includes cylinder body, base and inner casing, the top fixed mounting of base has the fixed station, the inside of fixed station is provided with the inner chamber, the top fixed mounting of fixed station has the cylinder body, the surface of cylinder body is provided with and connects the gas platform, the inside that connects the gas platform is provided with the air guide hole, the rotatory end cover of installing in top of cylinder body, the top fixed mounting of end cover has the sliding sleeve, the peripheral slidable mounting of sliding sleeve has the cap, the inside of cylinder body is provided with the inner casing, the inside slidable mounting of inner casing has the diaphragm, the inside slidable mounting of diaphragm has the dead lever, the upper end fixed mounting of diaphragm has the valve rod.

Preferably, a fixing bolt is rotatably mounted in the base on the periphery of the fixing table, and an oxidation preventing layer is coated on the surface of the fixing bolt.

Preferably, the bottom of the end cover is fixedly provided with an external thread table, and the surface of the external thread table is provided with external threads.

Preferably, a return spring is fixedly installed between the end cover on the periphery of the valve rod and the diaphragm, and an anti-corrosion layer is coated on the surface of the return spring.

Preferably, the surface of the cylinder body at the upper end of the gas receiving platform is provided with a mark, and a waterproof film is attached to the surface of the mark.

Preferably, an internal thread table is fixedly installed inside the cylinder body at the upper end of the diaphragm, and the internal thread table and the external thread table are overlapped.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention ensures the service life of the actuator by fixedly installing the cylinder body at the top of the fixed platform and canceling a hole site on the surface of the cylinder body which can be in contact with the outside, and the return spring is fixedly arranged between the end cover at the periphery of the valve rod and the diaphragm, the device can effectively play a role of resetting in the using process by utilizing the elasticity and the resetting property of the resetting spring, thereby improving the practicability of the device, and the surface of the reset spring is coated with the anti-corrosion layer which can effectively prevent the corrosive medium from contacting the surface of the material, thereby prolonging the service life of the device, the surface of the cylinder body at the upper end of the gas receiving platform is provided with a mark, and the surface of the mark is adhered with a waterproof film, the type, the performance and the principle of the device can be displayed for workers in a character form, so that the device is more convenient for users to use.

2. The cap is arranged on the periphery of the sliding sleeve in a sliding manner, so that the interior of the cylinder body cannot contact with the outside, the use function of accessories inside the actuator is ensured, the service life of the actuator is ensured, the fixing bolt is rotatably arranged inside the base on the periphery of the fixing table, a user can conveniently install the device by using the fixing bolt, the stability of the device is improved, the surface of the fixing bolt is coated with the anti-oxidation layer, the oxygen contained in the air can be effectively prevented from oxidizing the surface of the equipment after coating, so that the service life of the equipment is prolonged, the fixing bolt is rotatably arranged inside the base on the periphery of the fixing table, the user can more conveniently install the device by using the fixing bolt, so that the stability of the device is improved, the surface of the fixing bolt is coated with the anti-oxidation layer, and the oxygen contained in the air can be effectively prevented from oxidizing, thereby prolonging the service life of the device.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a side view of the present invention;

fig. 3 is a schematic overall partial structure of the present invention.

In the figure: 1. a cap; 2. a cylinder body; 201. identifying; 202. an internal thread table; 3. a fixed table; 301. an inner cavity; 4. a base; 401. a fixing bolt; 5. a gas receiving platform; 501. an air vent; 6. an end cap; 601. an external thread table; 7. an inner cylinder; 8. fixing the rod; 9. a valve stem; 10. a sliding sleeve; 11. a return spring; 12. a membrane.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, an embodiment of the present invention is shown: a long-life pneumatic actuator comprises a cylinder body 2, a base 4 and an inner cylinder 7, wherein a gas receiving platform 5 is arranged on the surface of the cylinder body 2, a gas guide hole 501 is formed in the gas receiving platform 5, the device is fixedly connected with an external pneumatic structure by the gas receiving platform 5, gas is guided into the inner cylinder 7 by the gas guide hole 501, a fixed platform 3 is fixedly installed at the top of the base 4, an inner cavity 301 is formed in the fixed platform 3, the cylinder body 2 is fixedly installed at the top of the fixed platform 3, the inner cylinder 7 is arranged in the cylinder body 2, a diaphragm 12 is slidably installed in the inner cylinder 7, a fixed rod 8 is slidably installed in the diaphragm 12, a valve rod 9 is fixedly installed at the upper end of the diaphragm 12, a hole position which can be in contact with the outside on the surface of the cylinder body 2 is cancelled, the use function of internal parts of the actuator is guaranteed, the service life of the actuator is prolonged, and after the, utilize diaphragm 12 to drive dead lever 8 and upwards remove, it upwards removes to utilize dead lever 8 to drive valve rod 9 to remove the in-process, thereby improve the practicality of device, utilize inner chamber 301 can enlarge the scope of dead lever 8 in the inside institute activity of device, thereby improve the practicality of device, there is end cover 6 through rotatory the top at cylinder body 2, can improve the holistic leakproofness of device, there is sliding sleeve 10 through the top fixed mounting at end cover 6, utilize sliding sleeve 10 can prescribe a limit to the position that valve rod 9 moved about, thereby improve the practicality of device, there is cap 1 through the peripheral slidable mounting at sliding sleeve 10, cap 1 makes 2 inside unable and external contacts of cylinder body, guarantee the service function of executor inside fitting, guarantee executor life.

Further, the inside rotatory mounting of 3 peripheral bases 4 of fixed station has gim peg 401, utilizes gim peg 401 can make things convenient for the user of service to install the device more to improve the stability of device, and the surface coating of gim peg 401 has the antioxidation coating, can effectually prevent that the surface of the oxygen that contains in the air from oxidizing equipment after the coating, thereby prolong the life of equipment.

Further, the bottom fixed mounting of end cover 6 has external screw thread platform 601, and the surface of external screw thread platform 601 is provided with the external screw thread, can make things convenient for the user of service to carry out fixed connection to end cover 6 and cylinder body 2 more to improve device's stability.

Further, a return spring 11 is fixedly installed between the end cover 6 on the periphery of the valve rod 9 and the diaphragm 12, the elasticity and the resetting performance of the return spring 11 can be utilized to enable the device to effectively play a resetting role in the using process, so that the practicability of the device is improved, the surface of the return spring 11 is coated with an anti-corrosion layer, the surfaces of corrosion media and materials can be effectively prevented from contacting, and the service life of the device is prolonged.

Further, connect 2 surfaces of cylinder body on the platform 5 upper end to be provided with sign 201, and sign 201's surface is attached to have waterproof film, can show the staff with the form of characters to the model, performance and the principle of device to more make things convenient for the user of service to use the device.

Further, the internal thread platform 202 is fixedly installed inside the cylinder body 2 at the upper end of the diaphragm 12, the internal thread platform 202 is overlapped with the external thread platform 601, and the device end cover 6 can be installed and detached according to actual conditions, so that the practicability of the device is improved.

The working principle is as follows: the device is fixedly connected with an external pneumatic structure by using the gas receiving platform 5, gas is guided to the inside of the inner cylinder 7 by using the gas guide hole 501, a hole site which can be contacted with the outside on the surface of the cylinder body 2 is cancelled, the use function of accessories inside the actuator is ensured, the service life of the actuator is ensured, after the gas enters the inside of the inner cylinder 7, the fixed rod 8 is driven by the diaphragm 12 to move upwards, the valve rod 9 is driven by the fixed rod 8 to move upwards in the moving process, so that the practicability of the device is improved, the moving range of the fixed rod 8 in the device can be expanded by using the inner cavity 301, the sealing performance of the whole device can be improved by rotatably installing the end cover 6 at the top of the cylinder body 2, the moving position of the valve rod 9 can be limited by using the sliding sleeve 10, so that the practicability of the device is improved, the cap 1 can prevent the inside of the cylinder body, the service life of the actuator is ensured.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.