Electric ball valve

Abstract

The utility model discloses an electric ball valve which comprises a valve body, a valve driver, a ball body and a valve rod, one end of the valve rod is in linkage connection with the output end of the valve driver, the other end of the valve rod is in linkage connection with the ball body, and the positions, corresponding to the two sides of the ball body, in a valve cavity are each provided with a valve seat; the valve driver comprises a transmission case, a circuit board, a driving motor and a magnetic encoder are arranged in the transmission case, the magnetic encoder and the driving motor are connected with the circuit board through wires, an output shaft is rotationally arranged at the bottom of the transmission case, the magnetic encoder is installed above the output shaft, and a motor shaft of the driving motor is in transmission connection with the output shaft through a gear transmission assembly. The bottom end of the output shaft is connected with the top end of the valve rod; a manual operation rod is further rotationally arranged in the transmission box and is in linkage connection with one gear shaft of the gear transmission assembly through a reversing assembly. According to the utility model, the ball valve can be electrically driven to work, and can be manually operated when the ball valve is not electrified, so that the use convenience of the ball valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an electric ball valve. Background Art

[0002] The electric regulating ball valve is most suitable for installation with the upper end of the working piston under the horizontal pipeline. The electric regulating ball valve generally includes a driver, which receives the driver signal to control the valve for adjustment. It can also form an intelligent network control system according to control needs, optimize control and realize remote monitoring. The valve is a device used to control the direction, pressure and flow of the fluid in the fluid system. It is a device that enables the medium (liquid, gas, powder) in the pipeline and equipment to flow or stop and control its flow. The actuator is an indispensable component of the control valve. Its role in the automatic control system is to receive the signal from the regulator and adjust the flow of the process medium based on its position and characteristics in the process pipeline, so as to bring the various parameters of the fluid within the required range. With the development of society, electric regulating ball valves are gradually used in the field of agricultural irrigation.

[0003] Existing electric regulating ball valves for agricultural irrigation are usually powered by solar energy. Since they do not have the function of manual operation, they will stop working when there is no power to the electric regulating ball valve, resulting in the irrigation system being unable to adjust. The electric regulating valve needs to be powered again to work again, which is inconvenient to use. Utility Model Content

[0004] The purpose of the utility model is to provide an electric ball valve, which can not only electrically drive the ball valve to work, but also can be manually operated when the ball valve is without electricity, thereby improving the convenience of using the ball valve.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electric ball valve, comprising a valve body, a valve driver, a ball and a valve stem, wherein a valve cavity and an inlet channel, a first outlet channel and a second outlet channel connected to the valve cavity are provided in the valve body, the ball is arranged in the valve cavity, an L-shaped channel is provided on the ball, the valve stem is passed through the upper part of the valve body, one end of the valve stem is linked to the output end of the valve driver, and the other end of the valve stem is linked to the ball, and a valve seat for forming a sealing fit with the ball when the valve is closed is respectively installed at positions corresponding to both sides of the ball in the valve cavity; The valve driver includes a transmission box installed on the upper part of the valve body, and a circuit board, a drive motor and a magnetic encoder are provided in the transmission box. The magnetic encoder and the drive motor are connected to the circuit board through wires. An output shaft is rotatably provided at the bottom of the transmission box, and the magnetic encoder is installed above the output shaft to detect the rotation angle of the output shaft. The motor shaft of the drive motor is connected to the output shaft through a gear transmission assembly, and the bottom end of the output shaft is linked to the top end of the valve stem; a manual operating lever is also rotatably provided in the transmission box, and the manual operating lever is linked to one of the gear shafts of the gear transmission assembly through a reversing assembly.

[0006] By adopting the above technical solution, when the valve is powered, the drive motor can rotate the output shaft through the gear transmission assembly, which in turn drives the valve stem, which in turn drives the ball to rotate, thus changing the valve state. When the valve is powered off, the manual operating lever can be operated to rotate, which rotates through the reversing assembly and one of the gear shafts of the gear transmission assembly, thereby driving the gear transmission assembly, thereby rotating the output shaft, which in turn drives the valve stem, which in turn drives the ball to rotate, thus changing the valve state. This not only allows the ball valve to be electrically driven, but also allows manual operation when the ball valve is powered off, improving the convenience of the ball valve.

[0007] The utility model is further configured as follows: the reversing assembly includes a first bevel gear and a second bevel gear, a bearing seat is provided in the transmission box, the manual operating lever is rotatably mounted on the bearing seat, the first bevel gear is mounted on the inner end of the manual operating lever, the second bevel gear is mounted on the gear shaft, and the first bevel gear is meshed with the second bevel gear.

[0008] By adopting the above technical solution, stable transmission between the manual operating lever and the gear shaft can be achieved, and installation is facilitated.

[0009] The utility model is further configured such that a manual operation hole is opened on the side of the transmission box, the manual operation rod is arranged inside the manual operation hole, and an inner hexagonal hole is provided at one end of the manual operation rod facing the manual operation hole.

[0010] By adopting the above technical solution, the tool can be inserted into the hexagonal hole of the manual operating rod, and the manual operating rod can be rotated, which is very convenient to operate.

[0011] The utility model is further configured such that a blocking piece is provided on the transmission box, the blocking piece includes a T-shaped connecting portion, an elastic extension portion and a plug; a slot is provided on the transmission box, the T-shaped connecting portion is engaged in the slot, and the plug is inserted into the manual operation hole.

[0012] By adopting the above technical solution, during normal operation, the manual operation hole is blocked by the plug of the blocking piece, which can play a role of dustproof and waterproof. During manual operation, the plug can be pulled out.

[0013] The utility model is further configured such that an indicator shaft is rotatably provided on the side of the transmission box, a third bevel gear is provided at the inner end of the indicator shaft, a fourth bevel gear is provided at the upper end of the output shaft, the third bevel gear is meshed with the fourth bevel gear, an angle indicator dial is provided on the outside of the transmission box with the indicator shaft as the center, and a pointer is provided at the outer end of the indicator shaft for pointing to the angle indicator dial.

[0014] By adopting the above technical solution, the opening and closing status of the valve can be observed by the position of the pointer corresponding to the angle indicator disk.

[0015] The present invention is further configured such that three micro switches corresponding to the three states of left full open, right full open and full closed are arranged around the outer periphery of the output shaft in the transmission box, and a moving contact for cooperating with the micro switches is arranged on the outer periphery of the output shaft.

[0016] By adopting the above technical solution, it can be ensured that the drive motor stops working when the valve is in the three positions of fully open left, fully open right and fully closed, thereby achieving precise control of the valve.

[0017] The utility model is further configured such that a solar panel is provided at the upper end of the transmission box, a storage battery is provided in the transmission box, and the solar panel and the storage battery are both connected to the circuit board through wires.

[0018] By adopting the above technical solution, the battery is charged by solar energy, and then the battery supplies power to the driving motor, which is convenient for outdoor use.

[0019] The present invention is further configured such that the transmission box is further provided with a signal connector for an external power line, and the signal connector is connected to the circuit board via a wire.

[0020] By adopting the above technical solution, when crops are too tall to cover the solar panels and cause the battery to run out of power, an external power cord can be connected to continue to power the drive motor without affecting normal irrigation.

[0021] The utility model is further configured as follows: the valve body includes a middle body and water outlet pipes threadedly connected to both ends of the middle body, the inlet channel is arranged at the bottom of the middle body, the first outlet channel and the second outlet channel are respectively arranged in the two water outlet pipes, and the two valve seats are respectively installed at the inner ends of the two water outlet pipes, and the two valve seats are tightly pressed against the left and right sides of the sphere.

[0022] By adopting the above technical solution, the assembly of the valve body and internal components is facilitated, and the structure is simple and reliable.

[0023] The utility model is further configured such that an installation groove is provided at the inner end of the water outlet pipe, and a pressure ring is also threadedly connected to the inner end of the water outlet pipe, the pressure ring presses the valve seat tightly in the installation groove, and an elastic member is sandwiched between the valve seat and the inner end of the installation groove.

[0024] By adopting the above technical solution, after the valve seat sealing surface is worn, the elastic member can push the valve seat and always press the valve seat against the surface of the ball, thereby ensuring reliable sealing performance when the valve is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall appearance of the utility model;

[0026] Figure 2 A cross-sectional view of the utility model as a whole;

[0027] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0028] Figure 4 This is a schematic diagram of the internal transmission structure of the valve driver of the utility model from a first perspective;

[0029] Figure 5 This is a schematic structural diagram of the internal transmission structure of the valve driver of the utility model from a second perspective;

[0030] Figure 6 This is a schematic diagram of the partial structure inside the valve driver of the utility model.

[0031] Figure: 1, valve body; 2, valve driver; 3, ball; 4, valve stem; 5, inlet channel; 6, first outlet channel; 7, second outlet channel; 8, L-shaped channel; 9, valve seat; 10, transmission box; 11, circuit board; 12, drive motor; 13, magnetic encoder; 14, output shaft; 15, gear transmission assembly; 16, manual operating lever; 17, reversing assembly; 18, gear shaft; 19, first bevel gear; 20, second bevel gear; 21, bearing seat; 22, manual operating lever 23. Hexagon socket hole; 24. Sealing piece; 25. T-shaped connecting part; 26. Elastic extension part; 27. Plug; 28. Slot; 29. Indicator shaft; 30. Third bevel gear; 31. Fourth bevel gear; 32. Angle indicator plate; 33. Pointer; 34. Micro switch; 35. Moving contact; 36. Solar panel; 37. Battery; 38. Signal connector; 39. Middle body; 40. Water outlet pipe; 41. Mounting groove; 42. Pressing ring; 43. Elastic part; 44. Valve chamber. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Example: As shown in the attached Figures 1 to 6The electric ball valve shown in the figure includes a valve body 1, a valve driver 2, a ball 3 and a valve stem 4. The valve body 1 is provided with a valve cavity 44 and an inlet channel 5, a first outlet channel 6, and a second outlet channel 7 connected to the valve cavity 44. The ball 3 is arranged in the valve cavity 44, and an L-shaped channel 8 is provided on the ball 3. The valve stem 4 is passed through the upper part of the valve body 1. One end of the valve stem 4 is linked to the output end of the valve driver 2, and the other end of the valve stem 4 is linked to the ball 3. A valve seat 9 for forming a sealing fit with the ball 3 when the valve is closed is also installed at positions corresponding to both sides of the ball 3 in the valve cavity 44; the valve driver 2 includes a transmission box installed on the upper part of the valve body 1 10. A circuit board 11, a drive motor 12 and a magnetic encoder 13 are provided in the transmission box 10. The magnetic encoder 13 and the drive motor 12 are connected to the circuit board 11 through a wire. An output shaft 14 is rotatably provided at the bottom of the transmission box 10. The magnetic encoder 13 is installed above the output shaft 14 to detect the rotation angle of the output shaft 14. The motor shaft of the drive motor 12 is connected to the output shaft 14 through a gear transmission assembly 15. The bottom end of the output shaft 14 is linked to the top end of the valve stem 4; a manual operating lever 16 is also rotatably provided in the transmission box 10, and the manual operating lever 16 is linked to one of the gear shafts 18 of the gear transmission assembly 15 through a reversing assembly 17. When the valve is powered, the drive motor 12 can drive the output shaft 14 to rotate through the gear transmission assembly 15, and the output shaft 14 can then drive the valve stem 4 to rotate, which in turn drives the ball 3 to rotate, thereby changing the valve state. When the valve is powered off, the manual operating lever 16 can be operated to rotate, which in turn drives the gear transmission assembly 15 via the reversing assembly 17 and one of the gear shafts 18 of the gear transmission assembly 15, thereby driving the gear transmission assembly 15 to transmit the power, thereby rotating the output shaft 14, which in turn drives the valve stem 4 to rotate, which in turn drives the ball 3 to rotate, thereby changing the valve state. The ball valve can not only be electrically driven to operate, but can also be manually operated when the ball valve is powered off, thereby improving the convenience of using the ball valve.

[0034] Among them, the gear transmission assembly 15 can be set according to actual needs. The gear transmission assembly 15 includes a first gear group and a second gear group. The drive motor 12 is transmitted to the output shaft 14 through the first gear group, and the manual operating lever 16 is transmitted to the output shaft 14 through the second gear group. The rotation of the first gear group and the second gear group does not interfere with each other.

[0035] As attached Figure 4As shown, the reversing assembly 17 includes a first bevel gear 19 and a second bevel gear 20. A bearing seat 21 is provided in the transmission case 10. The manual operating lever 16 is rotatably mounted on the bearing seat 21. The first bevel gear 19 is mounted on the inner end of the manual operating lever 16, and the second bevel gear 20 is mounted on the gear shaft 18. The first bevel gear 19 meshes with the second bevel gear 20. This design ensures stable transmission between the manual operating lever 16 and the gear shaft 18 and facilitates installation.

[0036] As attached Figure 6 As shown, a manual operation hole 22 is opened on the side of the transmission case 10, and the manual operation rod 16 is arranged inside the manual operation hole 22, and a hexagonal hole 23 is provided at one end of the manual operation rod 16 facing the manual operation hole 22. A tool can be inserted into the hexagonal hole 23 of the manual operation rod 16 to rotate the manual operation rod 16, which is very convenient to operate.

[0037] As attached Figure 6 As shown, the transmission case 10 is provided with a blocking member 24, which includes a T-shaped connecting portion 25, an elastic extension portion 26, and a plug 27. The transmission case 10 is provided with a slot 28, in which the T-shaped connecting portion 25 is engaged, and the plug 27 is inserted into the manual operation hole 22. During normal operation, the manual operation hole 22 is blocked by the plug 27 of the blocking member 24 to prevent dust and water. For manual operation, the plug 27 can be pulled out.

[0038] As attached Figure 4 As shown, the transmission case 10 is rotatably provided with an indicator shaft 29 on the side thereof, a third bevel gear 30 is provided on the inner end of the indicator shaft 29, a fourth bevel gear 31 is provided on the upper end of the output shaft 14, and the third bevel gear 30 is meshed with the fourth bevel gear 31. The transmission case 10 is provided with an angle indicator disk 32 centered on the indicator shaft 29 on the outside thereof, and a pointer 33 is provided on the outer end of the indicator shaft 29 for pointing to the angle indicator disk 32. By observing the position of the pointer 33 corresponding to the angle indicator disk 32, the valve opening and closing status can be observed.

[0039] As attached Figure 5 As shown, three micro switches 34 corresponding to the three states of left full open, right full open, and fully closed are installed around the outer circumference of the output shaft 14 in the transmission case 10. A movable contact 35 for cooperating with the micro switches 34 is also installed on the outer circumference of the output shaft 14. This design ensures that the drive motor 12 stops working when the valve is in the three positions of left full open, right full open, and fully closed, achieving precise control of the valve.

[0040] As attached Figure 2As shown, a solar panel 36 is provided on the upper end of the transmission case 10, and a battery 37 is provided inside the transmission case 10. The solar panel 36 and the battery 37 are both connected to the circuit board 11 through wires. The battery 37 is charged by solar energy, and then the battery 37 supplies power to the drive motor 12, which is convenient for outdoor use.

[0041] As attached Figure 1 As shown, the transmission box 10 is also provided with a signal connector 38 for connecting an external power line. The signal connector 38 is connected to the circuit board 11 via a wire. When the crops are too tall to cover the solar panel 36 and the battery 37 is depleted, an external power line can be connected to continue to power the drive motor 12 without affecting normal irrigation.

[0042] As attached Figure 2 As shown, the valve body 1 includes a middle body 39 and outlet pipes 40 threadedly connected to both ends of the middle body 39. The inlet channel 5 is provided at the bottom of the middle body 39. The first outlet channel 6 and the second outlet channel 7 are respectively provided in the two outlet pipes 40. Two valve seats 9 are respectively installed at the inner ends of the two outlet pipes 40, and the two valve seats 9 are tightly abutted against the left and right sides of the ball 3. This design facilitates assembly of the valve body 1 and its internal components, and the structure is simple and reliable.

[0043] As attached Figure 3 As shown, the inner end of the outlet pipe 40 is provided with a mounting groove 41, to which a pressure ring 42 is threadedly connected. The pressure ring 42 presses the valve seat 9 tightly against the mounting groove 41. An elastic member 43, specifically an elastic ring, such as a rubber ring, is sandwiched between the valve seat 9 and the inner end of the mounting groove 41. If the sealing surface of the valve seat 9 wears, the elastic member 43 can push the valve seat 9, keeping it firmly against the surface of the ball 3, thereby ensuring reliable sealing performance when the valve is closed.

Claims

1. An electric ball valve, comprising a valve body (1), a valve driver (2), a ball (3) and a valve stem (4), wherein the valve body (1) is provided with a valve cavity (44) and an inlet channel (5), a first outlet channel (6) and a second outlet channel (7) connected to the valve cavity (44), the ball (3) is arranged in the valve cavity (44), an L-shaped channel (8) is provided on the ball (3), the valve stem (4) is passed through the upper part of the valve body (1), one end of the valve stem (4) is linked to the output end of the valve driver (2), and the other end of the valve stem (4) is linked to the ball (3), and a valve seat (9) is respectively installed at positions corresponding to both sides of the ball (3) in the valve cavity (44) for forming a sealing fit with the ball (3) when the valve is closed; characterized in that: The valve driver (2) comprises a transmission box (10) mounted on the upper part of the valve body (1), wherein a circuit board (11), a driving motor (12) and a magnetic encoder (13) are arranged in the transmission box (10), wherein the magnetic encoder (13) and the driving motor (12) are connected to the circuit board (11) via a wire, an output shaft (14) is rotatably arranged at the bottom of the transmission box (10), wherein the magnetic encoder (13) is mounted above the output shaft (14) for detecting the rotation angle of the output shaft (14), wherein the motor shaft of the driving motor (12) is transmission-connected to the output shaft (14) via a gear transmission assembly (15), wherein the bottom end of the output shaft (14) is linked to the top end of the valve stem (4); wherein a manual operating lever (16) is rotatably arranged in the transmission box (10), wherein the manual operating lever (16) is linked to one of the gear shafts (18) of the gear transmission assembly (15) via a reversing assembly (17).

2. The electric ball valve according to claim 1, characterized in that: The reversing assembly (17) comprises a first bevel gear (19) and a second bevel gear (20); a bearing seat (21) is provided in the transmission case (10); the manual operating lever (16) is rotatably mounted on the bearing seat (21); the first bevel gear (19) is mounted on the inner end of the manual operating lever (16); the second bevel gear (20) is mounted on the gear shaft (18); and the first bevel gear (19) and the second bevel gear (20) are meshed.

3. The electric ball valve according to claim 1, characterized in that: A manual operation hole (22) is provided on the side of the transmission box (10), the manual operation rod (16) is arranged inside the manual operation hole (22), and an inner hexagonal hole (23) is provided at one end of the manual operation rod (16) facing the manual operation hole (22).

4. The electric ball valve according to claim 3, characterized in that: The transmission box (10) is provided with a blocking piece (24), the blocking piece (24) comprising a T-shaped connecting portion (25), an elastic extension portion (26) and a plug (27); the transmission box (10) is provided with a clamping groove (28), the T-shaped connecting portion (25) is clamped in the clamping groove (28), and the plug (27) is inserted into the manual operation hole (22).

5. The electric ball valve according to claim 1, characterized in that: The transmission box (10) is rotatably provided with an indicator shaft (29) on the side thereof, a third bevel gear (30) is provided at the inner end of the indicator shaft (29), a fourth bevel gear (31) is provided at the upper end of the output shaft (14), the third bevel gear (30) and the fourth bevel gear (31) are meshed, an angle indicator disk (32) centered around the indicator shaft (29) is provided on the outside of the transmission box (10), and a pointer (33) for pointing to the angle indicator disk (32) is provided at the outer end of the indicator shaft (29).

6. The electric ball valve according to claim 1, characterized in that: Three micro switches (34) corresponding to the three states of left full open, right full open and full closed are arranged around the outer periphery of the output shaft (14) in the transmission box (10), and a moving contact (35) for cooperating with the micro switches (34) is arranged around the outer periphery of the output shaft (14).

7. The electric ball valve according to claim 1, characterized in that: A solar panel (36) is provided at the upper end of the transmission box (10), a storage battery (37) is provided in the transmission box (10), and both the solar panel (36) and the storage battery (37) are connected to the circuit board (11) through a wire.

8. The electric ball valve according to claim 7, characterized in that: The transmission box (10) is also provided with a signal connector (38) for connecting an external power line, and the signal connector (38) is connected to the circuit board (11) via a wire.

9. The electric ball valve according to claim 1, characterized in that: The valve body (1) comprises a middle body (39) and water outlet pipes (40) threadedly connected to both ends of the middle body (39); the inlet channel (5) is arranged at the bottom of the middle body (39); the first outlet channel (6) and the second outlet channel (7) are respectively arranged in the two water outlet pipes (40); the two valve seats (9) are respectively installed at the inner ends of the two water outlet pipes (40), and the two valve seats (9) are tightly pressed against the left and right sides of the sphere (3).

10. The electric ball valve according to claim 9, characterized in that: The inner end of the water outlet pipe (40) is provided with a mounting groove (41), and the inner end of the water outlet pipe (40) is also threadedly connected to a pressing ring (42), and the pressing ring (42) presses the valve seat (9) into the mounting groove (41), and an elastic member (43) is sandwiched between the valve seat (9) and the inner end of the mounting groove (41).

Images