Electric valve of triaxial tester

Abstract

The utility model discloses an electric valve of a triaxial tester, which comprises a shell, a speed reducing motor is arranged in the shell, a driving gear is arranged on an output shaft of the speed reducing motor, a driven gear is meshed on the driving gear, the number of teeth of the driven gear is larger than that of the driving gear, and a ball valve is arranged below the driven gear. A valve rod of the ball valve is connected into an inner hole of the driven gear, and valve position indicating magnetic steel is arranged on the top face of the driven gear. The gear motor is adopted to drive the driving gear to rotate, and the driving gear further drives the driven gear to rotate, so that the valve rod of the ball valve connected with the driven gear rotates, and the ball core rotates to open or close the ball valve. By means of the design, the opening and closing function of the ball valve is controlled through the gear motor, and therefore pressure and impurity accumulation in a pipeline cannot affect opening and closing of the ball valve. Moreover, compared with a traditional electromagnetic valve, the electric valve is lower in energy consumption during operation and does not need to be powered on continuously, and therefore the energy-saving effect is achieved.

Description

Technical Field

[0001] The utility model relates to an electric valve for a triaxial tester. Background Art

[0002] A triaxial tester is a key device for soil mechanics testing, mainly used to measure the mechanical properties of soil under different stress conditions. The triaxial tester has a confining pressure and back pressure control part, where the back pressure refers to the pressure applied to the inside of the specimen. In some test methods, it is necessary to relieve the pressure inside the specimen, which may cause the specimen to be discharged into the back pressure control part of the triaxial tester. As the number of tests increases, these specimens will gradually accumulate in the back pressure control part, resulting in the solenoid valve being unable to close. Content of the Utility Model

[0003] The main purpose of the utility model is to provide an electric valve for a triaxial tester to solve the problems raised in the above background art.

[0004] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0005] An electric valve for a triaxial tester includes a housing. A reduction motor is arranged inside the housing. A driving gear is arranged on the output shaft of the reduction motor. A driven gear is meshed with the driving gear. The number of teeth of the driven gear is greater than that of the driving gear. A ball valve is arranged below the driven gear. The valve stem of the ball valve is connected in the inner hole of the driven gear. A valve position indicating magnet is arranged on the top surface of the driven gear.

[0006] Preferably, a reduction motor support seat is arranged inside the housing.

[0007] Preferably, the reduction motor support seat is in a U-shaped structure with an open bottom. The reduction motor is arranged inside the reduction motor support seat. The output shaft of the reduction motor faces upward and extends outside the reduction motor support seat.

[0008] Preferably, a ball valve support seat is arranged below the ball valve.

[0009] Preferably, a ball valve fixing piece with both ends connected to the ball valve support seat is arranged above the ball valve.

[0010] Preferably, a valve position indicating magnet is arranged on the top surface of the driven gear.

[0011] Preferably, two valve position indicating magnets are arranged.

[0012] Preferably, the two valve position indicating magnets are circumferentially distributed along the driven gear and are spaced 90 degrees apart.

[0013] The beneficial technical effects of the utility model:

[0014] This electric valve utilizes a reduction motor to drive the rotation of a driving gear, which in turn drives the rotation of a driven gear. This in turn rotates the valve stem of the ball valve connected to the driven gear, thereby rotating the ball core to open and close the valve. This design allows the ball valve to be controlled on and off by the reduction motor, thus preventing pressure and impurity buildup in the pipeline from affecting its opening and closing. Furthermore, compared to traditional solenoid valves, this electric valve consumes less energy during operation and does not require continuous power supply, thus achieving energy savings. Furthermore, this electric valve has a simple structure and low maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the internal structure of an electric valve according to an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of the electric valve according to an embodiment of the present utility model.

[0017] In the figure: 1. Housing; 2. Reducer motor support seat; 3. Reducer motor; 4. Driving gear; 5. Ball valve; 6. Driven gear; 7. Ball valve support seat; 8. Ball valve fixing plate; 9. Valve position indicating magnet. DETAILED DESCRIPTION

[0018] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is described in further detail below with reference to embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0019] like Figure 1-Figure 2 As shown, the triaxial tester electric valve provided in this embodiment includes a housing 1, a reduction motor 3 is provided in the housing 1, a driving gear 4 is provided on the output shaft of the reduction motor 3, and a driven gear 6 is meshed with the driving gear 4. The number of teeth of the driven gear 6 is greater than the number of teeth of the driving gear 4 to achieve a deceleration effect and ensure precise control of the opening and closing positions of the valve. A ball valve 5 is provided below the driven gear 6, and the valve stem of the ball valve 5 is connected to the inner hole of the driven gear 6. The top surface of the driven gear 6 is provided with a valve position indicating magnet 9, and a Hall switch is installed at a suitable position so that the Hall switch can sense the magnetic field change caused by the rotation of the valve position indicating magnet 9 and can feed back the signal to the control circuit. The specific working process is as follows:

[0020] When the valve needs to be opened, the control circuit first sends a signal to the reduction motor driver, commanding the reduction motor 3 to rotate forward. The reduction motor 3 drives the driving gear 4 to rotate. The driving gear 4 meshes with the driven gear 6, thereby driving the driven gear 6 to rotate. The rotation of the driven gear 6 further drives the valve stem of the ball valve 5 connected thereto, causing the ball valve 5 to start to open. As the driven gear 6 rotates, the valve position indicating magnet 9 also rotates. When the valve position indicating magnet 9 rotates to a certain angle, it will trigger the Hall switch installed at an appropriate position. The Hall switch senses the change in the magnetic field and converts this change into an electrical signal and feeds it back to the control circuit. After receiving the feedback signal from the Hall switch, the control circuit immediately sends a stop signal to the reduction motor driver. The reduction motor driver responds to the stop signal, cuts off the power supply of the motor or brakes the motor, causing the reduction motor 3 to stop rotating. At this time, the ball valve 5 has been opened to the predetermined position and remains stable. When the valve needs to be closed, the control circuit sends an opposite signal to the reduction motor driver, commanding the reduction motor 3 to rotate in reverse. The reduction motor 3 rotates in reverse, and through a similar transmission and position detection mechanism as above, the ball valve 5 is gradually closed. When the Hall switch detects the signal that the valve is completely closed again, the control circuit sends a stop signal and the reduction motor 3 stops rotating.

[0021] In this embodiment, as Figure 1 shown, a reduction motor support seat 2 is provided inside the housing 1, providing a stable installation foundation for the reduction motor 3 and ensuring that the reduction motor 3 does not shake or displace during operation.

[0022] In this embodiment, as Figure 1 shown, the reduction motor support seat 2 is a U-shaped structure with an open bottom. The reduction motor 3 is arranged inside the reduction motor support seat 2. The output shaft of the reduction motor 3 faces upward and extends outside the reduction motor support seat 2, protecting the reduction motor 3 and reducing accidental impacts.

[0023] In this embodiment, as Figure 1 shown, a ball valve support seat 7 is provided below the ball valve 5, providing a stable support for the ball valve 5 and ensuring that the ball valve 5 does not tilt or shift during the opening and closing process.

[0024] In this embodiment, as Figure 1 shown, a ball valve fixing piece 8 with both ends connected to the ball valve support seat 7 is provided above the ball valve 5, further fixing the position of the ball valve 5.

[0025] In this embodiment, as Figure 1 shown, two valve position indicating magnets 9 are provided. The two valve position indicating magnets 9 are circumferentially distributed along the driven gear 6 and are spaced 90 degrees apart, which can provide more accurate position feedback information.

[0026] In summary, in this embodiment, a reduction motor 3 is used to drive the driving gear 4 to rotate, which in turn drives the driven gear 6 to rotate, thereby rotating the valve stem of the ball valve 5 connected to the driven gear 6, thereby rotating the ball core to open or close the ball valve 5. This design enables the on / off function of the ball valve 5 to be controlled by the reduction motor 3, so that the pressure and impurity accumulation in the pipeline will not affect the opening and closing of the ball valve 5. Moreover, compared to traditional solenoid valves, this electric valve consumes less energy during operation and does not require continuous power supply, thereby achieving energy-saving effects. In addition, this electric valve has a simple structure and low maintenance costs.

[0027] The above is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and concept of the present invention within the scope disclosed by the present invention, which falls within the protection scope of the present invention.

Claims

1. A triaxial tester electric valve, characterized by: It includes a housing (1), a reduction motor (3) is arranged inside the housing (1), a driving gear (4) is arranged on the output shaft of the reduction motor (3), a driven gear (6) is meshed with the driving gear (4), the number of teeth of the driven gear (6) is greater than that of the driving gear (4), a ball valve (5) is arranged below the driven gear (6), the valve rod of the ball valve (5) is connected in the inner hole of the driven gear (6), and a valve position indicating magnet (9) is arranged on the top surface of the driven gear (6).

2. The electric valve for a triaxial tester according to claim 1, characterized in that: A reduction motor support (2) is arranged inside the housing (1).

3. The electric valve for a triaxial tester according to claim 2, characterized in that: The reduction motor support (2) is of a U-shaped structure with an opening downward, the reduction motor (3) is arranged inside the reduction motor support (2), and the output shaft of the reduction motor (3) faces upward and extends outside the reduction motor support (2).

4. The electric valve for a triaxial tester according to claim 1, characterized in that: A ball valve support (7) is arranged below the ball valve (5).

5. The electric valve for a triaxial tester according to claim 4, characterized in that: A ball valve fixing piece (8) with both ends connected to the ball valve support (7) is arranged above the ball valve (5).

6. The electric valve for a triaxial tester according to claim 1, characterized in that: There are two valve position indicating magnets (9).

7. The electric valve for a triaxial tester according to claim 1, characterized in that: The two valve position indicating magnets (9) are circumferentially distributed along the driven gear (6) and the interval is 90 degrees.

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