阅读说明：本技术 一种电动三通球阀及其控制方法 (Electric three-way ball valve and control method thereof ) 是由 马君 王君 陆嘉君 曹彬 于 2021-01-13 设计创作，主要内容包括：本发明涉及阀门领域,具体公开了一种电动三通球阀及其控制方法,包括：阀门部分、连接传动装置、电气控制装置三部分,电气控制装置设置于连接传动装置上部,连接传动装置连接电气控制装置与阀门部分；阀门部分包括：阀体,T形状设置,设置有第一通道、第二通道和第三通道；球体,位于阀体中心；连接传动装置,包括：支架,连接阀体上部；连接套,设置于阀体上端；电气控制装置,包括：变速箱,设置于电气控制装置上部,变速箱中安装有齿轮,齿轮采用新型高分子材料制成；电动机,设置于变速箱内部；电路板,设置于变速箱内部,电路板控制电动机动作进而控制阀体的开度进而调节流量,实现了准确控制流量,克服了现有技术中流量调节不准确的缺点。(The invention relates to the field of valves, and particularly discloses an electric three-way ball valve and a control method thereof, wherein the electric three-way ball valve comprises the following steps: the valve part, the connecting transmission device and the electric control device are arranged on the upper part of the connecting transmission device, and the connecting transmission device is connected with the electric control device and the valve part; the valve portion includes: the valve body is arranged in a T shape and is provided with a first channel, a second channel and a third channel; the ball body is positioned in the center of the valve body; a connecting transmission comprising: the bracket is connected with the upper part of the valve body; the connecting sleeve is arranged at the upper end of the valve body; an electrical control apparatus comprising: the gearbox is arranged at the upper part of the electric control device, a gear is arranged in the gearbox and is made of a novel high polymer material; the motor is arranged inside the gearbox; the circuit board is arranged in the gearbox and controls the action of the motor so as to control the opening of the valve body and further adjust the flow, so that the accurate flow control is realized, and the defect of inaccurate flow adjustment in the prior art is overcome.)

1. An electric three-way ball valve comprising:

a valve portion comprising:

a valve body (18), the valve body (18) being T-shaped, the valve body (18) being provided with a first channel, a second channel and a third channel;

the ball body (10) is positioned in the center of the valve body (18), and the center is the intersection of the first channel, the second channel and the third channel;

a connecting transmission comprising:

the bracket (7) is connected with the upper part of the valve body (18);

the connecting sleeve (4) is arranged at the upper end of the valve body (18);

the electric control device is arranged at the upper part of the connecting transmission device, and the connecting transmission device is connected with the electric control device and the valve part;

the electrical control device includes:

the gearbox (1) is arranged at the upper part of the electric control device, a gear is arranged in the gearbox (1), and the gear is made of a novel high polymer material;

an electric motor (12), said electric motor (12) being arranged inside said gearbox (1);

the circuit board (11), the circuit board (11) set up in gearbox (1) is inside, circuit board (11) control motor (12) action.

2. An electrically operated three-way ball valve according to claim 1, wherein the valve portion further comprises:

the lower end of the valve rod (13) is vertically connected with the upper end of the ball body (10), the valve rod (13) is vertically arranged, and the ball body (10) synchronously rotates along with the valve rod (13);

the valve rod (13) and the inner side of the upper part of the valve body (18) form a cavity;

a packing (5), the packing (5) being disposed inside a cavity formed between the valve stem (13) and the valve body (18).

3. An electrically operated three-way ball valve according to claim 2, wherein the valve portion further comprises:

a first O-ring (6), the first O-ring (6) being disposed between the packing (5) and the lower end of the valve stem (13).

4. An electrically operated three-way ball valve according to claim 1, wherein the valve portion further comprises:

the valve cover (16), the valve cover (16) is connected valve body (18), valve cover (16) with valve body hookup location is valve body (18) right side, valve cover (16) with correspond on valve body (18) and be equipped with assorted screw thread.

5. An electric three-way ball valve according to claim 4,

the first channel, the second channel and the third channel are positioned on the same plane, the first channel and the second channel are arranged on the valve body (18), and the third channel corresponds to the valve cover (16);

the first channel and the second channel are perpendicular to each other, and the third channel corresponding to the valve cover (16) and the first channel are located on the same straight line.

6. An electrically operated three-way ball valve according to claim 1, wherein the valve portion further comprises:

the ball lining (14) is arranged on the outer side of the ball body (10), and the ball lining (14) is made of a novel high polymer material.

7. An electrically operated three-way ball valve according to claim 6, wherein the valve portion further comprises:

a second O-ring (9), the second O-ring (9) being disposed outside the ball bushing (14).

8. An electric three-way ball valve according to claim 7, wherein two second O-rings (9) are provided, and the two second O-rings (9) are respectively provided on the upper side and the lower side of the ball lining (14).

9. An electrically operated three-way ball valve according to claim 6, wherein the valve portion further comprises:

the fourth O-shaped ring (17) is arranged at the joint of the valve cover (16) and the valve body (18);

a third O-ring (15), the third O-ring (15) disposed between the ball bushing (14) and the valve cover (16).

10. An electrically operated three-way ball valve according to claim 6, wherein the valve portion further comprises:

the disc spring (8), the disc spring (8) is arranged on the outer side of the ball liner (14), and the disc spring (8) exerts a compensation force on the ball liner (14) when the ball valve operates.

11. An electrically powered three-way ball valve according to claim 1, wherein the electrical control means further comprises:

the power supply control wire (3), the said power supply control wire (3) is drawn out from the side of the said change-speed gear box (1);

the glan head (2) is used for connecting the power control line (3) with the gearbox (1).

12. A control method of an electric three-way ball valve comprises the following steps:

when the power is on, the ball valve can rotate for a stroke, and whether a fault occurs is self-detected;

the current is changed through the circuit board, and the motor drives the valve rod to rotate, so that the ball body is driven to rotate;

when the ball rotates to the connection position, the pipeline is connected, liquid substances pass through, otherwise, the pipeline is cut off;

during operation, the circuit board controls the opening and closing amplitude of the ball valve according to different working conditions.

13. The control method of the electric three-way ball valve according to claim 13, wherein when the electric three-way ball valve works, the circuit board controls the opening and closing amplitude of the ball valve according to different working conditions.

Technical Field

The invention relates to the field of valves, in particular to an electric three-way ball valve and a control method thereof.

Background

The valve is a control part in a fluid conveying system, has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like, and can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like.

The three-way ball valve is widely applied to chemical engineering and automatic machinery as a control valve, and the three-way ball valve in the market mainly comprises a T-shaped ball valve and an L-shaped ball valve, wherein the T-shaped ball valve can enable three orthogonal pipelines to be mutually communicated and cut off a third channel to play the roles of shunting and converging; the L-shaped pipe can only connect two mutually orthogonal pipes, cannot simultaneously keep the mutual communication of the third pipe, and only plays a role in distribution. The three-way ball valves on the market, no matter T-shaped or L-shaped, usually adjust the working state of the valve through a hand wheel, so that the three-way ball valves have the defect of inconvenient use.

The three-way ball valve also has a small amount of electronic three-way ball valves on the market, but current electronic three-way ball valve all has a universal characteristics, and the ball valve can't control the technical defect of aperture in order to accurate control flow well promptly, therefore urgent need one kind can realize electric control and can realize the electronic three-way ball valve of accurate control valve body flow again to satisfy the demand in market.

Disclosure of Invention

The invention aims to provide an electric three-way ball valve to solve the technical problems of easy leakage and poor sealing effect in the prior art.

The second object of the present invention is to provide a control method for an electric three-way ball valve.

In order to achieve one of the purposes, the invention adopts the following technical scheme:

an electric three-way ball valve comprising:

a valve portion comprising:

the valve body 18 is arranged in a T shape, and the valve body 18 is provided with a first channel, a second channel and a third channel;

the ball 10 is positioned at the central position of the valve body 18, and the central position is the intersection of the first channel, the second channel and the third channel;

a connecting transmission comprising:

the bracket 7 is connected with the upper part of the valve body 18; and the connecting sleeve 4 is arranged at the upper end of the valve body 18. By adopting the technical means, the valve rod 13 and the transmission main shaft are of an integral structure, and the connecting sleeve 4 mainly realizes the transmission of the valve rod 13 and the transmission main shaft and plays a role in limiting.

The electric control device is arranged at the upper part of the connecting transmission device, and the connecting transmission device is connected with the electric control device and the valve part;

the electrical control device includes: the gearbox 1 is arranged at the upper part of the electric control device, a gear is arranged in the gearbox 1, and the gear is made of a novel high polymer material; an electric motor 12, wherein the electric motor 12 is arranged inside the gearbox 1; the circuit board 11 is arranged inside the gearbox 1, and the circuit board 11 controls the motor 12 to act. By adopting the technical means, the circuit board 11 controls the motor 12 to act so as to realize that the motor 12 drives the ball body 10 to rotate, and then the three-way ball valve is reversed or the flow is adjusted by controlling the circuit board 11, the circuit board 11 controls the opening and closing amplitude of the ball valve and further controls the flow speed of fluid, the circuit board 11 is controlled by controlling voltage so as to control the motion of the motor, the voltage control controls the opening of the valve body and further adjusts the flow, the electronic control three-way ball valve has the characteristic of accurate control, and further the electronic control three-way ball valve realizes reversing or adjusts the flow more accurately, and the technical defect that the opening of the valve body cannot be well controlled by the ball valve in the prior art so as to.

By adopting the technical means, the gear in the gearbox is made of novel high polymer materials, the self-lubricating property of the gear is better, the self-lubricating property is better compared with that of metal transmission, the noise in the running process of the ball valve is low, and the defect that the noise generated in the running process of the ball valve is larger is overcome.

By adopting the technical means, the three-way ball valve is provided with the electric control device, the electric control of the three-way valve is realized, the defect of inconvenient manual control in the prior art is overcome, and more importantly, the electric control device is arranged on the upper gearbox 1 of the electric control device

The valve body and the ball body are arranged, the fluid sealing effect of the three-way ball valve is good, and the defect that the sealing effect of the three-way ball valve is poor in the prior art is overcome.

According to an embodiment of the invention, wherein the valve portion further comprises: the lower end of the valve rod 13 is vertically connected with the upper end of the ball body 10, the valve rod 13 is vertically arranged, and the ball body 10 synchronously rotates along with the valve rod 13; the valve rod 13 and the inner side of the upper part of the valve body 18 form a cavity; a packing 5, the packing 5 being disposed inside a cavity formed between the valve stem 13 and the valve body 18.

According to an embodiment of the invention, wherein the valve portion further comprises: a first O-ring 6, said first O-ring 6 being disposed between said packing 5 and a lower end of said valve stem 13.

According to an embodiment of the invention, wherein the valve portion further comprises: the valve cover 16 is connected with the valve body 18, the connecting position of the valve cover 16 and the valve body is the right side of the valve body 18, and the valve cover 16 and the valve body 18 are correspondingly provided with matched threads.

According to an embodiment of the present invention, the first channel, the second channel and the third channel are located on the same plane, the first channel and the second channel are disposed on the valve body 18, and the third channel corresponds to the bonnet 16; the first channel and the second channel are perpendicular to each other, and the third channel corresponding to the valve cover 16 and the first channel are located on the same straight line.

According to an embodiment of the invention, wherein the valve portion further comprises: the ball lining 14 is arranged on the outer side of the ball body 10, and the ball lining 14 is made of a novel high polymer material. Adopt above-mentioned technical means, ball lining 14 set up in the spheroid 10 outside, ball lining 14 adopts novel macromolecular material preparation simultaneously, set up like this, the ball lining is when playing sealed effect, the frictional force between ball lining 14 and the spheroid 10 is than less, the function is more smooth-going, the wearing and tearing between spheroid and the ball lining have been reduced, and then the moment of torsion that spheroid 10 rotation needs has been reduced, the moment of torsion is little and then make the drive power of spheroid 10 reduce greatly, and then low-voltage drive has been realized, can be applicable to the higher operating mode of pressure control requirement, it is big to have overcome wearing and tearing between spheroid and the ball lining among the prior art, and then the operation moment of torsion that leads to is big, the driving voltage that needs is higher, can't be applicable to the higher operating mode of pressure control, the great shortcoming of the.

According to an embodiment of the invention, wherein the valve portion further comprises: and a second O-ring 9, wherein the second O-ring 9 is arranged outside the ball liner 14.

According to one embodiment of the invention, two second O-rings 9 are arranged, and the two second O-rings 9 are respectively arranged on the upper side and the lower side of the ball lining 14.

According to an embodiment of the invention, wherein the valve portion further comprises: a fourth O-ring 17, wherein the fourth O-ring 17 is arranged at the joint of the valve cover 16 and the valve body 18; a third O-ring 15, said third O-ring 15 being disposed between said ball bushing 14 and said valve cover 16. By adopting the technical means, the arrangement of the second O-shaped ring 9, the third O-shaped ring 15 and the fourth O-shaped ring 17 increases the sealing effect of the ball valve, prevents a medium from leaking from the valve rod when in work and enables the upper end of the valve body 18 to be in a sealing state.

According to an embodiment of the invention, wherein the valve portion further comprises: the disc spring 8, the disc spring 8 is arranged outside the ball liner 14, and the disc spring 8 applies a compensation force to the ball liner 14 when the ball valve operates. By adopting the technical means, the disc spring is arranged on the outer side of the ball liner 14, and when the ball valve operates, a compensation force is applied to the ball liner so as to obtain a better sealing effect.

According to an embodiment of the present invention, wherein the electrical control apparatus further comprises: the power supply control wire 3 is led out from the side edge of the gearbox 1; a glan head 2, the glan head 2 being used to connect the power control line 3 with the gearbox 1.

In order to achieve the second purpose, the invention adopts the following technical scheme:

a control method of an electric three-way ball valve comprises the following steps:

when the power is on, the ball valve can rotate for a stroke, and whether a fault occurs is self-detected;

the current is changed through the circuit board, and the motor drives the valve rod to rotate, so that the ball body is driven to rotate;

when the ball rotates to the connection position, the pipeline is connected, liquid substances pass through, otherwise, the pipeline is cut off;

according to an embodiment of the invention, in operation, the circuit board controls the opening and closing amplitude of the ball valve according to different working conditions.

Has the advantages that:

the invention provides an electric three-way ball valve which is provided with an electric control device, realizes the electric control of a three-way valve, simultaneously, the electric control device comprises a gearbox, a motor and a circuit board are arranged in the gearbox, the circuit board controls the motor to act so as to realize the rotation of a motor driving ball body, and further the three-way ball valve is reversed or the flow is adjusted through a control circuit board, the circuit board controls the opening and closing amplitude of the ball valve so as to control the flow speed of fluid, the circuit board controls the circuit board through controlling voltage so as to control the motion of the motor, the voltage controls the opening of a valve body so as to adjust the flow, the electric three-way ball valve has the characteristic of accurate control, further the electric three-way ball valve realizes the reversing or adjusts the flow more accurately, and the technical defect that the ball valve in, the market demand is well met.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a cross-sectional view of an electric three-way ball valve according to an embodiment of the present application.

Fig. 2 is a schematic perspective view of an electric three-way ball valve according to an embodiment of the present application.

In the drawings:

1. gearbox 2, glan head 3, power control line

4. Connecting sleeve 5, filler 6 and first O-shaped ring

7. Support 8, dish spring 9, second O type circle

10. Ball 11, circuit board 12, motor

13. Valve rod 14, ball liner 15 and third O-shaped ring

16. Valve cover 17, fourth O-shaped ring 18 and valve body

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clear and fully described, embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are illustrative of some, but not all embodiments of the invention, and are intended to be exemplary only and not limiting of the invention, and that all other embodiments obtained by those skilled in the art without making any inventive change thereto will fall within the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", 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 "a," "an," "first," "second," "third," "fourth," "fifth," and "sixth" 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 should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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.

For the purposes of simplicity and explanation, the principles of the embodiments are described by referring mainly to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one skilled in the art that the embodiments may be practiced without these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.

Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. However, it will be appreciated by one skilled in the art that aspects of the disclosure may be practiced without one or more of the specific details. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the present disclosure. In addition, the same reference numerals in the drawings denote the same or similar parts, and thus, a repetitive description thereof will be omitted.

The first embodiment is as follows:

as shown in fig. 1-2, fig. 1 is a cross-sectional view of an electric three-way ball valve provided in an embodiment of the present application, and fig. 2 is a schematic perspective view of the electric three-way ball valve provided in the embodiment of the present application. An electric three-way ball valve comprising: the valve comprises a valve part, a connecting transmission device and an electric control device, wherein the electric control device is arranged on the upper part of the connecting transmission device, and the connecting transmission device is connected with the electric control device and the valve part.

The electrical control device includes: the gearbox 1 is arranged at the upper part of the electric control device, a gear is arranged in the gearbox 1, and the gear is made of a novel high polymer material; an electric motor 12, wherein the electric motor 12 is arranged inside the gearbox 1; the circuit board 11 is arranged inside the gearbox 1, and the circuit board 11 controls the motor 12 to act. By adopting the technical means, the circuit board 11 controls the motor 12 to act so as to realize that the motor 12 drives the ball body 10 to rotate, and then the three-way ball valve is reversed or the flow is adjusted by controlling the circuit board 11, the circuit board 11 controls the opening and closing amplitude of the ball valve and further controls the flow speed of fluid, the circuit board 11 is controlled by controlling voltage so as to control the motion of the motor, the voltage control controls the opening of the valve body and further adjusts the flow, the electronic control three-way ball valve has the characteristic of accurate control, and further the electronic control three-way ball valve realizes reversing or adjusts the flow more accurately, and the technical defect that the opening of the valve body cannot be well controlled by the ball valve in the prior art so as to.

The electric three-way ball valve is provided with the electric control device, so that the electric control of the three-way valve is realized, and the defect of inconvenience in manual control in the prior art is overcome; meanwhile, a ball liner is arranged on the outer side of the ball body, so that the sealing effect of the ball valve on fluid is improved, a second O-shaped ring and a disc spring are arranged on the outer side of the ball liner, the disc spring applies a compensation force to the ball liner when the ball valve operates to obtain a better sealing effect, a third O-shaped ring and a fourth O-shaped ring are further arranged between the ball body and the valve body to further play a sealing role, so that leakage of a medium is prevented, and the sealing effect of the ball valve is improved.

The valve portion includes:

the valve body 18 is arranged in a T shape, and the valve body 18 is provided with a first channel, a second channel and a third channel; the valve body 18 is made of stainless steel 316, and the stainless steel 316 has high resistance strength to stress generated by thermal expansion, impact load and pipeline deformation, so that the valve body 18 can bear high resistance strength and has long service life.

The ball 10 is positioned at the central position of the valve body 18, and the central position is the intersection of the first channel, the second channel and the third channel; the lower end of the valve rod 13 is vertically connected with the upper end of the ball body 10, the valve rod 13 is vertically arranged, and the ball body 10 synchronously rotates along with the valve rod 13; the valve rod 13 and the inner side of the upper part of the valve body 18 form a cavity; a packing 5, the packing 5 being disposed inside a cavity formed between the valve stem 13 and the valve body 18. The valve rod 13 and the gearbox main shaft are of an integral structure, and the connecting sleeve 4 mainly realizes transmission of the valve rod 13 and the gearbox main shaft and plays a limiting role. The upper end of the valve rod 13 is under multiple close fit of the bracket 7, the connecting sleeve 4 and the packing 5, and the valve rod 13 is vertically connected with the ball body 10.

The valve cover 16 is connected with the valve body, the connecting position of the valve cover 16 and the valve body is the right side of the valve body, and matched threads are arranged on the valve cover 16 and the valve body 18; the first channel, the second channel and the third channel are positioned on the same plane, the first channel and the second channel are arranged on the valve body 18, and the third channel corresponds to the valve cover 16; the first channel and the second channel are perpendicular to each other, and the third channel corresponding to the valve cover 16 and the first channel are located on the same straight line.

The valve part further comprises a ball lining 14, said ball lining 14 being arranged outside said ball 10.

A second O-ring 9, said second O-ring 9 being disposed outside said ball bushing 14; in this embodiment, two second O-rings 9 are provided, and the two second O-rings 9 are respectively provided on the upper and lower sides of the ball bushing 14. A fourth O-ring 17, wherein the fourth O-ring 17 is arranged at the joint of the valve cover 16 and the valve body 18; a third O-ring 15, said third O-ring 15 being disposed between said ball bushing 14 and said valve cover 16. By adopting the technical means, the arrangement of the second O-shaped ring 9, the third O-shaped ring 15 and the fourth O-shaped ring 17 increases the sealing effect of the ball valve, prevents a medium from leaking from the valve rod when in work and enables the upper end of the valve body 18 to be in a sealing state.

A first O-ring 6, wherein the first O-ring 6 is arranged between the packing 5 and the lower end of the valve rod 13; and the medium is prevented from leaking from the valve rod during operation, so that the upper end of the valve body 18 is in a sealing state.

The disc spring 8 is arranged on the outer side of the ball liner 14, the disc spring 8 is arranged at the left side position in the embodiment of the invention, and when the ball valve operates, the disc spring 8 applies a compensation force to the ball liner 14 so as to obtain a better sealing effect. Specifically, the shape of belleville spring is circular cone dish form, and is different from traditional spring, has its special effect in the function, and the key feature is, bears very big load in less space, and the stroke is short, and required space is little, and combination convenient to use, the maintenance is changed the dress easily, and economic security is high. The disc spring can obtain different bearing capacity and characteristic curve by changing the number of discs or the combination form of the discs, so that discs of various sizes can be suitable for wide application range, and spare parts can be prepared and managed easily. The properly designed and manufactured disc spring has long service life. The optimal application range of the compression stroke is between 10% and 75% of the maximum compression stroke.

A connecting transmission comprising:

the bracket 7 is connected with the upper part of the valve body 18; the connecting sleeve 4 is arranged at the upper end of the valve body 18, the valve rod 13 is connected with a main shaft of the gearbox through the connecting sleeve 4, the valve rod 13 and the main shaft of the gearbox are of an integral structure, and the connecting sleeve 4 mainly realizes transmission of the valve rod 13 and the main shaft of the gearbox and plays a role in limiting.

The electrical control device includes:

the gearbox 1 is arranged at the upper part of the electric control device, a gear is arranged in the gearbox 1, and the gear is made of a novel high polymer material; adopt above-mentioned technical means, the gear in the gearbox adopts novel macromolecular material to make, and the gear is than good from the wettability, compares in metal transmission from the wettability good a lot, and gearbox box leakproofness is good simultaneously, can cut off inside noise to adopt the motor of miniwatt, ball valve operation in-process noise is little, has overcome the great shortcoming of noise that takes place among the ball valve operation process. The power supply control wire 3 is led out from the side edge of the gearbox 1; an electric motor 12, wherein the electric motor 12 is arranged inside the gearbox 1; the glan head 2 is used for connecting the power control wire 3 with the gearbox 1; the circuit board 11, the said circuit board 11 is set up inside the said gear box 1; the circuit board 11 controls the motor 12 to act, so that the motor 12 drives the ball 10 to rotate, and further the three-way ball valve is reversed or the water flow is adjusted, and the circuit board 11 controls the opening and closing amplitude of the ball valve, and further the flowing speed of the fluid is controlled.

The electric three-way ball valve is provided with the electric control device, so that the electric control of the three-way valve is realized, and the defect of inconvenience in manual control in the prior art is overcome; meanwhile, a ball liner is arranged on the outer side of the ball body, so that the sealing effect of the ball valve on fluid is improved, a second O-shaped ring and a disc spring are arranged on the outer side of the ball liner, the disc spring applies a compensation force to the ball liner when the ball valve operates to obtain a better sealing effect, a third O-shaped ring and a fourth O-shaped ring are further arranged between the ball body and the valve body to further play a sealing role, so that leakage of a medium is prevented, and the sealing effect of the ball valve is improved.

Example two:

as in the first embodiment, as shown in fig. 1 and 2, the valve portion includes a ball lining 14, the ball lining 14 is disposed outside the ball 10, and the ball lining 14 is made of a novel polymer material. Adopt above-mentioned technical means, ball lining 14 set up in the spheroid 10 outside, ball lining 14 adopts novel macromolecular material preparation simultaneously, set up like this, the ball lining is when playing sealed effect, the frictional force between ball lining 14 and the spheroid 10 is than less, the function is more smooth-going, the wearing and tearing between spheroid and the ball lining have been reduced, and then the moment of torsion that spheroid 10 rotation needs has been reduced, the moment of torsion is little and then make the drive power of spheroid 10 reduce greatly, and then low-voltage drive has been realized, can be applicable to the higher operating mode of pressure control requirement, it is big to have overcome wearing and tearing between spheroid and the ball lining among the prior art, and then the operation moment of torsion that leads to is big, the driving voltage that needs is higher, can't be applicable to the higher operating mode of pressure control, the great shortcoming of the.

The ball lining 14 is in line contact with the valve body 18, and by adopting the technical means, the ball lining 14 is in line contact with the valve body 18, the sealing specific pressure is increased compared with the surface contact, so that a sealing surface with high sealing specific pressure is formed between the valve body 18 and the ball lining 14, and the sealing performance of the valve is enhanced.

The ball liner 14 is of an R-angle shape, the R-angle shape of the ball liner 14 forms an R-shaped sealing surface with the ball body 10, and the R-shaped sealing surface is in line contact with the ball body 10. The line contact between the R-angle type of the ball lining 14 and the ball body 10 effectively reduces the contact area between the ball lining 14 and the ball body 10 compared with the surface contact, thereby reducing the friction force between the ball lining 14 and the ball body 10, reducing the torque required by opening and closing the valve, reducing the abrasion between the ball body and the ball lining, simultaneously reducing the noise in the operation process of the ball valve, and overcoming the defects of large torque, large abrasion between the ball body and the ball lining and large noise generated in operation in the prior art. Meanwhile, low-voltage control is realized due to the characteristic of low torque, and the technical problem that the ball valve in the prior art cannot be suitable for the working condition with higher pressure control requirement is solved.

Example three:

a control method of an electric three-way ball valve comprises the following steps:

when the power is on, the ball valve can rotate for a stroke, and whether a fault occurs is self-detected;

the motor drives the valve rod to rotate so as to drive the ball body to rotate by changing the current;

when the ball rotates to the connection position, the pipeline is connected, and liquid substances pass through; otherwise, the pipeline is cut off;

when the ball valve works, the circuit board controls the opening and closing amplitude of the ball valve according to different working conditions, and then the flowing speed of fluid can be controlled.

Although the illustrative embodiments of the present invention have been described above to enable those skilled in the art to understand the present invention, the present invention is not limited to the scope of the embodiments, and it is apparent to those skilled in the art that all the inventive concepts using the present invention are protected as long as they can be changed within the spirit and scope of the present invention as defined and defined by the appended claims.