Oil-immersed actuator

Abstract

The invention relates to an oil-immersed actuator which comprises an actuator body and a shell used for installing the actuator body, the shell comprises a lower shell body and an upper surface cover, an installation groove used for containing the actuator body is formed in the lower shell body, and the actuator body is arranged in the installation groove and fixed to the lower shell body through screws; the sealing cover blocks the upper opening of the mounting groove to form a sealed space, the sealed space is filled with oil, and the actuator body is located in the sealed space and soaked in the oil. Through the design of adding the sealing cover, the sealing cover and the lower shell are combined to form the sealing space, and the sealing space is filled with oil, so that the actuator body is soaked in the oil, the situation that the actuator is affected with damp and rusted can be effectively avoided, and normal and stable operation of the actuator is ensured.

Description

Technical Field

[0001] The present invention relates to an actuator, in particular to an oil-immersed actuator. Background Art

[0002] An actuator for controlling the opening and closing of a ball valve is installed inside a water meter, a heat meter, or other metering device. The structure of an existing actuator generally includes an actuator body, on the panel of which are mounted components such as a motor, an output shaft, a manual adjustment shaft, a position sensor, and a limit switch.

[0003] The housing of metering devices such as water meters and heat meters generally consists of a lower housing and an upper cover. The upper cover is buckled onto the lower housing and fixed with bolts. The currently commonly used installation method for actuators is to fix the actuator in the lower housing with screws and then directly buckle the upper cover.

[0004] The disadvantages of the existing actuator installation method are: during use, water or water vapor will enter the housing, and the actuator will easily become damp and rust if it is in a humid environment for a long time, thereby affecting the normal switching of the actuator.

[0005] Based on the above technical problems, the inventors improved the installation method of the actuator and proposed an oil-immersed actuator. The improved installation scheme immerses the entire actuator in oil, which can effectively prevent the actuator from getting damp and rusting, and ensure the normal and stable operation of the actuator. Summary of the Invention

[0006] The present invention aims to overcome the deficiencies of the prior art and provides an oil-immersed actuator.

[0007] The present invention is achieved through the following technical solution, providing an oil-immersed actuator, including an actuator body and a shell for installing the actuator body, the shell including a lower shell and an upper cover, a mounting groove for placing the actuator body is provided in the lower shell, the actuator body is placed in the mounting groove and fixed to the lower shell by screws; the sealing cover blocks the upper opening of the mounting groove to form a sealed space, the sealed space is filled with oil, the actuator body is located in the sealed space and is immersed in oil.

[0008] Preferably, the actuator body comprises a panel, on which the motor, the output shaft, the manual adjustment shaft, the position sensor and the limit switch are mounted.

[0009] Preferably, a first receiving groove and a second receiving groove protruding upward are provided on the bottom surface of the sealing cover, the limit switch and the output shaft are located in the first receiving groove, and a through hole for the output shaft to pass through is provided on the top surface of the first receiving groove.

[0010] Preferably, the motor is located in the second receiving slot, a wiring slot is provided on one side of the second receiving slot, the wiring slot is communicated with the second receiving slot, and the wires connected to the motor are arranged in the wiring slot.

[0011] Preferably, an oil filling hole is opened on the top surface of the second receiving groove, and a waterproof breathable valve is installed at the oil filling hole. Installing the waterproof breathable valve can ensure the balance of internal and external air pressure and avoid thermal expansion and contraction.

[0012] Preferably, a first jack and a second slot are provided on the bottom surface of the sealing cover, the manual adjustment shaft passes through the first jack, and the position sensor is inserted into the second slot; a third receiving slot is provided on the periphery of the second slot, and a magnet is installed in the third receiving slot.

[0013] Preferably, a fourth receiving slot, a fifth receiving slot, a sixth receiving slot and a wire outlet slot are provided on the top surface of the sealing cover, the battery is installed in the fourth receiving slot, the circuit board is installed in the fifth receiving slot, the angle sensor is installed in the sixth receiving slot, and the wires connecting the motor pass through the wire outlet slot.

[0014] Preferably, the sealing cover is fixed to the panel of the actuator body by screws, the position of the mounting screws is sealed by sealant, and the circumference of the connection between the sealing cover and the mounting groove is sealed by sealant.

[0015] Preferably, the sixth receiving slot corresponds to the third receiving slot in upper and lower directions.

[0016] The beneficial effects of the present invention are: The present invention adds a sealing cover, utilizes the combination of the sealing cover and the lower shell to form a sealed space, and fills the sealed space with oil so that the actuator body is immersed in the oil, thereby effectively preventing the actuator from getting damp and rusting, and ensuring the normal and stable operation of the actuator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the external structure of the housing of the present invention from one viewing angle; Figure 2 A schematic diagram of the external structure of the housing of the present invention from another perspective; Figure 3 A three-dimensional diagram of the actuator of the present invention; Figure 4 A three-dimensional diagram showing the assembly relationship between the actuator and the lower housing of the present invention; Figure 5 This is a schematic diagram of the working state when the sealing cover of the present invention covers the actuator; Figure 6 This is a three-dimensional view of the sealing cover of the present invention from one viewing angle; Figure 7 This is a three-dimensional view of the sealing cover of the present invention from another perspective; As shown in the figure: 1. Upper cover, 2. Lower housing, 3. Limit switch, 4. Output shaft, 5. Motor, 6. Manual adjustment shaft, 7. Position sensor, 8. Panel, 9. Actuator body, 10. Mounting slot, 11. Sealing cover, 12. Sixth storage slot, 13. Fifth storage slot, 14. Fourth storage slot, 15. Through hole, 16. Wire outlet slot, 17. Second storage slot, 18. Wiring slot, 19. First storage slot, 20. First jack, 21. Third storage slot, 22. Second slot, 23. Oil filling hole. DETAILED DESCRIPTION

[0018] In order to clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0019] like Figure 1-7 As shown, the present invention includes an actuator body 9 and a housing for mounting the actuator body 9. The housing comprises a lower housing 2 and an upper cover 1. A mounting slot 10 for the actuator body 9 is provided within the lower housing 2. The actuator body 9 is positioned within the mounting slot 10 and secured to the lower housing 2 via screws. The actuator body 9 utilizes a conventional structure and includes a panel 8 on which are mounted the motor 5, output shaft 4, manual adjustment shaft 6, position sensor 7, and limit switch 3. A sealing cover 11 blocks the upper opening of the mounting slot 10, forming a sealed space. The sealed space is filled with oil, and the actuator body 9 is located within the sealed space and immersed in the oil.

[0020] In this embodiment, the bottom surface of the sealing cover 11 is provided with an upwardly projecting first receiving groove 19 and a second receiving groove 17. The limit switch 3 and the output shaft 4 are located within the first receiving groove 19. A through hole 15 is provided on the top surface of the first receiving groove 19 for the output shaft 4 to pass through, and an O-ring is fitted around the output shaft 4. The motor 5 is located within the second receiving groove 17. A wiring groove 18 is provided on one side of the second receiving groove 17, communicating with the second receiving groove 17. The wires connecting the motor 5 are routed within the wiring groove 18.

[0021] In this embodiment, an oil filling hole 23 is opened on the top surface of the second receiving groove 17, and a waterproof breathable valve is installed at the oil filling hole 23. The waterproof breathable valve adopts an existing structure. Installing the waterproof breathable valve can ensure the balance of internal and external air pressure and avoid thermal expansion and contraction.

[0022] In this embodiment, the bottom surface of the sealing cover 11 is provided with a first insertion hole 20 and a second insertion slot 22. The manual adjustment shaft 6 extends through the first insertion hole 20, and an O-ring is fitted around the manual adjustment shaft 6. The position sensor 7 is inserted into the second insertion slot 22. A third receiving groove 21 is provided on the outer periphery of the second insertion slot 22, and a magnet is mounted within the third receiving groove 21.

[0023] In this embodiment, a fourth receiving slot 14, a fifth receiving slot 13, a sixth receiving slot 12 and a wire outlet slot 16 are provided on the top surface of the sealing cover 11. The battery is installed in the fourth receiving slot 14, the circuit board is installed in the fifth receiving slot 13, the angle sensor is installed in the sixth receiving slot 12, and the wires connected to the motor 5 pass through the wire outlet slot 16. A sealing ring is installed at the wire outlet position and sealed with sealant.

[0024] In this embodiment, the sixth receiving groove 12 corresponds to the third receiving groove 21 in a vertical direction.

[0025] In this embodiment, the sealing cover 11 is fixed to the panel 8 of the actuator body 9 by screws, and the position of the mounting screws is sealed by sealant. Furthermore, the connection between the sealing cover 11 and the mounting groove 10 is sealed by sealant.

[0026] During assembly, first install and fix the actuator body 9 into the installation groove 10 of the lower shell 2, then install the sealing cover 11 to form a sealed space and cover the actuator body 9 in the sealed space, and fill the sealed space with oil through the oil filling hole 23. After the oil filling is completed, install the waterproof breathable valve to the oil filling hole 23, and finally assemble the upper cover 1 and the lower shell 2 together.

[0027] The present invention adds a sealing cover 11, utilizes the combination of the sealing cover 11 and the lower shell 2 to form a sealed space, and fills the sealed space with oil so that the actuator body 9 is immersed in the oil, thereby effectively preventing the actuator from getting damp and rusting, and ensuring the normal and stable operation of the actuator.

[0028] Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by adopting existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical solutions of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. An oil-immersed actuator, characterized in that: It includes an actuator body and a shell for installing the actuator body, the shell includes a lower shell and an upper cover, a mounting groove for placing the actuator body is provided in the lower shell, the actuator body is placed in the mounting groove and fixed to the lower shell by screws; the sealing cover blocks the upper opening of the mounting groove to form a sealed space, the sealed space is filled with oil, the actuator body is located in the sealed space and is soaked in oil.

2. The oil-immersed actuator according to claim 1, characterized in that: The actuator body comprises a panel, on which a motor, an output shaft, a manual adjustment shaft, a position sensor and a limit switch are mounted.

3. The oil-immersed actuator according to claim 2, characterized in that: A first receiving groove and a second receiving groove protruding upward are provided on the bottom surface of the sealing cover. The limit switch and the output shaft are located in the first receiving groove. A through hole for the output shaft to pass through is provided on the top surface of the first receiving groove.

4. The oil-immersed actuator according to claim 3, characterized in that: The motor is located in the second receiving slot. A wiring slot is provided on one side of the second receiving slot. The wiring slot is communicated with the second receiving slot. The wires connected to the motor are arranged in the wiring slot.

5. The oil-immersed actuator according to claim 4, characterized in that: An oil filling hole is provided on the top surface of the second receiving groove, and a waterproof breathable valve is installed at the oil filling hole.

6. The oil-immersed actuator according to claim 2, characterized in that: A first jack and a second slot are provided on the bottom surface of the sealing cover. The manual adjustment shaft passes through the first jack and the position sensor is inserted into the second slot. A third receiving slot is provided on the periphery of the second slot and a magnet is installed in the third receiving slot.

7. The oil-immersed actuator according to claim 6, characterized in that: A fourth receiving slot, a fifth receiving slot, a sixth receiving slot and a wire outlet slot are provided on the top surface of the sealing cover. The battery is installed in the fourth receiving slot, the circuit board is installed in the fifth receiving slot, the angle sensor is installed in the sixth receiving slot, and the wires connecting the motor pass through the wire outlet slot.

8. The oil-immersed actuator according to claim 1, characterized in that: The sealing cover is fixed to the panel of the actuator body by screws, and the connection circumference of the sealing cover and the mounting groove is sealed by sealant.

9. The oil-immersed actuator according to claim 7, characterized in that: The sixth receiving slot corresponds to the third receiving slot in a vertical direction.

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