Electric valve actuator power unit

Abstract

The utility model discloses a power unit of an electric valve actuator. According to the technical scheme, the device comprises an aluminum profile frame, a gear set is arranged in the aluminum profile frame, a driving assembly capable of driving the gear set is arranged outside the aluminum profile frame, the driving assembly comprises a direct-current motor and a planetary reducer connected with the direct-current motor, and the planetary reducer comprises a first-stage gear rod. The first-stage gear rod is provided with a first-stage single gear, the gear set comprises a second-stage gear rod and a third-stage gear rod, the second-stage gear rod is provided with a second-stage large gear and a second-stage small gear, the third-stage gear rod is provided with an output large gear and a torsion output shaft, the second-stage large gear is connected with the first-stage single gear in a meshed mode, and the second-stage small gear is connected with the second-stage small gear in a meshed mode. The secondary small gear is in meshed connection with the output large gear, and the torsion output shaft extends out of the aluminum profile frame and is connected with a threaded installation base. According to the scheme, the structure is compact, installation is convenient, three-stage transmission is achieved, and the transmission ratio is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric valve actuator field, especially a kind of electric valve actuator power unit. BACKGROUND

[0002] Electric valve actuator power unit is the device for providing power source for electric valve actuator, in order to high transmission ratio, electric valve actuator power unit in prior art is mostly bulky, and the connecting structure between the actuator, i.e. valve is complex, difficult to install in the relatively narrow space structure. Therefore, the purpose of the present application is to provide a kind of electric valve actuator power unit with compact structure, easy to install and having three-stage transmission. SUMMARY

[0003] In view of the deficiencies in the prior art, the main purpose of the utility model is to provide a kind of electric valve actuator power unit with compact structure, easy to install and having three-stage transmission, with higher transmission ratio.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of electric valve actuator power unit, including aluminium profile frame, gear set is arranged in the aluminium profile frame, the drive assembly capable of driving gear set is arranged outside the aluminium profile frame, the drive assembly includes DC motor and the planetary reducer connected with DC motor, the planetary reducer includes primary gear rod, a primary single gear is arranged on the primary gear rod, the gear set includes secondary gear rod and tertiary gear rod, secondary gear rod is provided with secondary large gear and secondary small gear, tertiary gear rod is provided with output large gear and torsion output shaft, secondary large gear is meshed and connected with primary single gear, secondary small gear is meshed and connected with output large gear, and the torsion output shaft extends outside aluminium profile frame and is connected with threaded mounting seat.

[0005] Preferably, wear-resistant gasket is arranged on tertiary gear rod near output large gear.

[0006] Preferably, the planetary reducer is fixedly connected with aluminium profile frame by mounting screw.

[0007] Preferably, the two ends of secondary gear rod and tertiary gear rod are respectively arranged through aluminium profile frame and fixed by shaft sleeve.

[0008] This invention has the following advantages over existing technologies: its structure is compact, easy to install, and features a three-stage transmission with a high transmission ratio, which improves output torque and reduces the required DC motor speed. Specifically, the aluminum profile frame is integrally formed from aluminum profiles, providing mounting and positioning for the gear set; the DC motor provides the power source for the gear set and can switch between forward and reverse rotation; the planetary reducer provides the primary and secondary reduction ratios; the first-stage gear rod and the first-stage single gear provide planetary reduction speed and torque output and primary reduction ratio adjustment; the second-stage gear rod has a second-stage large gear and a second-stage small gear, providing secondary reduction ratio adjustment; the third-stage gear rod has an output large gear and a torque output shaft, providing tertiary reduction ratio adjustment; and the threaded mounting base provides lateral positioning for the third-stage gear rod and provides connecting threads for the power unit and the controlled valve. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of a power unit for an electric valve actuator according to the present invention;

[0010] Figure 2 This is a side view of a power unit for an electric valve actuator according to the present invention;

[0011] Figure 3 A bottom view of the power unit of an electric valve actuator according to this utility model;

[0012] Figure 4 Schematic diagram of the exploded structure of the drive assembly and gear set Figure 1 ;

[0013] Figure 5 Schematic diagram of the exploded structure of the drive assembly and gear set Figure 2 .

[0014] In the diagram: 1. Aluminum profile frame; 2. DC motor; 3. Planetary reducer; 4. First stage gear rod; 5. First stage single gear; 6. Second stage gear rod; 7. Third stage gear rod; 8. Second stage large gear; 9. Second stage small gear; 10. Output large gear; 11. Torque output shaft; 12. Threaded mounting base; 13. Wear-resistant gasket; 14. Mounting screw; 15. Bushing. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] like Figure 1As shown, an electric valve actuator power unit comprises an aluminum profile frame 1, a gear set is arranged in the aluminum profile frame 1, a driving assembly capable of driving the gear set is arranged outside the aluminum profile frame 1, the driving assembly comprises a DC motor 2 and a planetary reducer 3 connected with the DC motor 2, the planetary reducer 3 comprises a primary gear rod 4, a primary single gear 5 is arranged on the primary gear rod 4, the gear set comprises a secondary gear rod 6 and a tertiary gear rod 7, a secondary large gear 8 and a secondary small gear 9 are arranged on the secondary gear rod 6, an output large gear 10 and a torsion output shaft 11 are arranged on the tertiary gear rod 7, the secondary large gear 8 is in meshing connection with the primary single gear 5, the secondary small gear 9 is in meshing connection with the output large gear 10, and the torsion output shaft 11 extends out of the aluminum profile frame 1 and is connected with a threaded mounting seat 12.

[0017] The electric valve actuator power unit has a compact structure, is convenient to install, has three-stage transmission, has a high transmission ratio, can improve the output torque and reduce the speed requirement of the DC motor 2, and has the advantages that the aluminum profile frame 1 is integrally formed by aluminum profiles, provides installation and positioning for the gear set, the DC motor 2 provides a power source for the gear set and can be switched in forward and reverse directions, the planetary reducer 3 provides a primary and secondary main reduction ratio, the primary gear rod 4 and the primary single gear 5 provide planetary reduction speed and torsion output and a primary reduction ratio adjustment, the secondary large gear 8 and the secondary small gear 9 arranged on the secondary gear rod 6 provide a secondary reduction ratio adjustment, the output large gear 10 and the torsion output shaft 11 arranged on the tertiary gear rod 7 provide a tertiary reduction ratio adjustment, and the threaded mounting seat 12 provides lateral positioning for the tertiary gear rod 7 and provides a connecting thread for the power unit and a controlled device, i.e., a valve.

[0018] Preferably, a wear-resistant gasket 13 is arranged on the tertiary gear rod 7 close to the output large gear 10. The wear-resistant gasket 13 provides positioning and lubrication for the output large gear 10.

[0019] Preferably, the planetary reducer 3 is fixedly connected with the aluminum profile frame 1 through a mounting screw 14.

[0020] This arrangement ensures stable connection between the planetary reducer 3 and the aluminum profile frame 1 and is convenient to install.

[0021] Preferably, the two ends of the secondary gear rod 6 and the tertiary gear rod 7 are arranged through the aluminum profile frame 1 and are fixed through a shaft sleeve 15.

[0022] The shaft sleeve 15 provides lateral positioning and wear-resistant lubrication for the secondary gear rod 6 and the tertiary gear rod 7.

[0023] The above merely is preferred implementation manner of the present application, the protection scope of the present application is not only limited to the above examples, and belongs to the technical scheme under the idea of the present application all belongs to the protection scope of the present application. It should be pointed out that, for ordinary skilled person in the art, under the premise of not departing from the principle of the present application, some improvements and decorations, these improvements and decorations should also be considered as the protection scope of the present application.

Claims

1. An electric valve actuator power unit, characterized by: The application relates to an aluminum profile frame, a gear set is arranged in the aluminum profile frame, a driving assembly capable of driving the gear set is arranged outside the aluminum profile frame, the driving assembly comprises a direct current motor and a planetary reducer connected with the direct current motor, the planetary reducer comprises a primary gear rod, a primary single gear is arranged on the primary gear rod, the gear set comprises a secondary gear rod and a tertiary gear rod, a secondary large gear and a secondary small gear are arranged on the secondary gear rod, an output large gear and a torsion output shaft are arranged on the tertiary gear rod, the secondary large gear is in meshing connection with the primary single gear, the secondary small gear is in meshing connection with the output large gear, and the torsion output shaft extends out of the aluminum profile frame and is connected with a threaded mounting seat.

2. An electric valve actuator power unit according to claim 1, characterized in that: A wear-resistant gasket is arranged on the tertiary gear rod close to the output large gear.

3. An electric valve actuator power unit as defined in claim 1, wherein: The planetary reducer is fixedly connected with the aluminum profile frame through mounting screws.

4. The power unit of claim 1, wherein: The two ends of the secondary gear rod and the tertiary gear rod are respectively arranged through the aluminum profile frame and fixed through shaft sleeves.

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