Three-way ball valve

Abstract

The invention discloses a three-way ball valve which comprises a valve body provided with a valve cavity and a plurality of fluid channels communicated with the valve cavity. The valve element is arranged in the valve cavity, a sealing assembly I is arranged between the valve element and the valve cavity and used for forming sealing fit with the valve cavity, the valve element is provided with a connecting channel, the connecting channel is provided with an outlet end and an inlet end, and the valve element can be driven to rotate, so that the outlet end and the inlet end of the connecting channel communicate with any two fluid channels perpendicular to each other correspondingly. The communication degree of the outlet end and the fluid channel is adjustable; one end of the valve rod is connected with the valve element, and the other end of the valve rod penetrates through the valve body and is connected with an external driving mechanism for driving the valve element to rotate; according to the three-way ball valve, medium flow division and accurate adjustment of medium flow can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of ball valves, and in particular to a three-way ball valve. Background Art

[0002] Valves are widely used in industry and daily life. They are devices used to make the fluid medium in the pipeline system flow or stop and control its flow. The current three-way ball valve is divided into T-type three-way ball valve and L-type three-way ball valve according to the different connection channel structures of the valve core. For example, the Chinese utility model patent with publication number CN215568169U discloses a three-way ball valve that can adjust and control the flow. A flow regulating component is set in the ball valve body, and the rotating disk drives the rotating rod and then drives the worm through the worm gear to make the rotating disk rotate, and then adjust the through holes on the rotating disk and the fixed disk to achieve flow control. Although this method enables the three-way ball valve to have a certain flow regulation function, the flow control structure is installed at the water inlet end of the three-way ball valve, and the overall structure is complex and the operation is cumbersome.

[0003] Therefore, it is necessary to improve the structure of the three-way ball valve in the prior art so that the three-way ball valve can realize flow regulation control of different channels according to usage needs, and the overall structure is simple. Compared with the flow regulation structure in the prior art, the required parts are greatly reduced. At the same time, it is easy to manufacture and facilitate production and processing. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a three-way ball valve that can realize flow regulation control of different channels according to usage needs, and the overall structure is simple. Compared with the flow regulation structure in the prior art, the required parts are greatly reduced. At the same time, it is easy to manufacture and facilitate production and processing.

[0005] The three-way ball valve of the present invention comprises:

[0006] A valve body, comprising a valve cavity and a plurality of fluid channels communicating with the valve cavity;

[0007] A valve core is arranged in the valve cavity. A sealing component I is arranged between the valve core and the valve cavity to form a sealing match with the valve cavity. The valve core is provided with a connecting channel. The connecting channel has an outlet end and an inlet end. The valve core can be driven to rotate so that the outlet end and the inlet end of the connecting channel are respectively connected to any two mutually perpendicular fluid channels, and the degree of connection between the outlet end and the fluid channel is adjustable;

[0008] The valve stem has one end connected to the valve core and the other end passes through the valve body and is connected to an external driving mechanism for driving the valve core to rotate.

[0009] Furthermore, the shape of the outlet end is triangular, the shape of the inlet end is circular, and the line connecting the center lines of the inlet end and the outlet end is an L-shaped structure.

[0010] Furthermore, the fluid channel includes a first fluid channel, a second fluid channel and a third fluid channel, the axes of the first fluid channel and the second fluid channel are respectively located on the same straight line, the axis of the third fluid channel is perpendicular to the axes of the first fluid channel and the second fluid channel, the inlet end is connected to the third fluid channel, and the outlet end can be operated to be connected or not connected to the first fluid channel or to be connected or not connected to the second fluid channel.

[0011] Furthermore, the sealing component I includes a sealing valve seat and a reset member. A valve seat groove opened circumferentially around the fluid channel is provided at the connection between the fluid channel and the valve cavity. The sealing valve seat is an annular structure and is installed in the valve seat groove. The reset member is arranged between the sealing valve seat and the valve seat groove and forms a sealing valve seat that fits against the valve core, thereby forming a sealing fit between the valve core and the valve cavity.

[0012] Furthermore, the reset member is a spring, and a mounting groove for mounting the spring is provided on the sealing valve seat, and the mounting groove is provided on a side of the sealing valve seat away from the valve cavity.

[0013] Furthermore, the sealing assembly I also includes a sealing ring, which is arranged between the sealing valve seat and the valve seat groove, and the sealing valve seat is provided with a sealing groove I for installing the sealing ring.

[0014] Furthermore, a round hole adapted to the valve stem is provided on the top of the valve body, and one end of the valve stem extends out of the round hole to cooperate with the driving mechanism;

[0015] It also includes a sealing component II, which is arranged on the valve body for cooperating with the valve stem, including a packing gland and packing. The circular hole is provided with a sealing groove II for filling the packing. The packing gland passes through the valve stem and is fixedly connected to the valve body through a fixing part, so as to press the packing against the surface of the valve stem.

[0016] Furthermore, the driving mechanism includes an actuator, a support frame and a connecting sleeve, the support frame is fixedly connected to the valve body, the actuator is fixed on the support frame, and the valve stem is connected to the actuator via the connecting sleeve.

[0017] The beneficial effects of the present invention: the three-way ball valve of the present invention can not only control the connection or disconnection between multiple fluid channels, but also control the flow rate of the medium, and can accurately control the size ratio of the flow rate. By rotating the valve core, the size of the connection between the outlet end and the fluid channel can be changed, thereby changing the flow area of ​​the valve and realizing the flow regulation of the valve. The overall structure is simple, and there is no need to set a complex adjustment structure in the valve body. Compared with the existing technology, it is more convenient for later maintenance and production and processing, and the overall cost is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 for Figure 1 A partial enlarged view of

[0021] Figure 3 It is a structural schematic diagram of the valve core;

[0022] Figure 4 It is a schematic diagram of the circulation area;

[0023] The above drawings contain the following reference numerals:

[0024] 1. Valve core; 101. Outlet end; 102. Inlet end; 2. Valve stem; 3. Valve body; 4. Third fluid channel; 5. Sealing ring; 6. Reset member; 7. Sealing valve seat; 8. First fluid channel; 9. Packing gland; 10. Connecting sleeve; 11. Packing; 12. Second fluid channel; 13. Actuator; 14. Support frame; 15. Sealing groove II; 16. Valve seat groove; 17. Sealing groove I. DETAILED DESCRIPTION

[0025] Figure 1 It is a structural schematic diagram of the present invention, Figure 2 for Figure 1 A partial enlarged view of Figure 3 It is the structural diagram of the valve core. Figure 4 is a schematic diagram of the flow area, such as Figure 1-4 As shown: the three-way ball valve of this embodiment includes:

[0026] The valve body 3 is provided with a valve cavity and a plurality of fluid channels connected to the valve cavity; the fluid channels are at least three, one of which is a medium inlet of the valve body 3, and the other two are medium outlets of the valve body 3;

[0027] The valve core 1 is arranged in the valve cavity. A sealing component I is arranged between the valve core 1 and the valve cavity to form a sealing match with the valve cavity. The valve core 1 is provided with a connecting channel. The connecting channel has an outlet end 101 and an inlet end 102. The valve core 1 can be driven to rotate so that the outlet end 101 and the inlet end 102 of the connecting channel are respectively connected to any two mutually perpendicular fluid channels, and the degree of connection between the outlet end 101 and the fluid channel is adjustable; the valve core 1 is arranged in the valve cavity and forms a sealing match with the valve cavity through the sealing component I. The sealing component I can be a sealing structure such as a valve seat. The valve core 1 is a spherical structure. By arranging a connecting channel in the valve core 1, and the connecting channel has an outlet end 101 and an inlet end 102, when in use, By driving the valve core 1 to rotate, the outlet end 101 and the inlet end 102 are respectively connected to corresponding fluid channels (i.e., the inlet end 102 is connected to the fluid channel of the medium inlet of the valve body 3, and the outlet end 101 is connected to the fluid channel of one of the medium outlets of the valve body 3), so that the medium can flow from the medium inlet of the valve body 3 to the medium outlet and flow out from the medium outlet. The valve body 3 is provided with a flange for connecting to the pipeline. The outlet end 101 is connected or not connected to the fluid channel, so that the on-off of the medium can be controlled. At the same time, the degree of connection between the outlet end 101 and the fluid channel can be adjusted, so that the flow area can be controlled by controlling the valve opening to achieve the effect of adjusting the flow rate. The overall structure is simple and easy to operate.

[0028] The valve stem 2 has one end connected to the valve core 1, and the other end passes through the valve body 3 and is connected to an external driving mechanism, so as to drive the valve core 1 to rotate; one end of the valve stem 2 is connected to the valve core 1, and the other end passes through the valve body 3 and is connected to the external driving mechanism, so that the valve stem 2 can be driven to move by the external driving mechanism, and the valve stem 2 drives the valve core 1 to rotate. The external driving mechanism can be a driving handle or an electric actuator, etc.

[0029] In the prior art, a flow regulating component is provided in the ball valve body, which drives the rotating rod through the rotating disk body and then drives the worm through the worm gear to make the rotating disk rotate, thereby adjusting the through holes on the rotating disk and the fixed disk to achieve flow control. Although this method enables the three-way ball valve to have a certain flow regulating function, the flow control structure is installed at the water inlet end of the three-way ball valve, and the overall structure is complex and the operation is cumbersome; the three-way ball valve of the present invention can not only control the connection or disconnection between multiple fluid channels, but also control the flow of the medium, and can accurately control the size ratio of the flow rate. Through the rotation of the valve core 1, the size of the connection between the outlet end 101 and the fluid channel can be changed, thereby changing the flow area of ​​the valve and realizing the flow regulation of the valve. The overall structure is simple, and there is no need to set a complex adjustment structure in the valve body 3. Compared with the prior art, it is more convenient for later maintenance and use and production and processing, and the overall cost is greatly reduced.

[0030] In this embodiment, the shape of the outlet end 101 is triangular, the shape of the inlet end 102 is circular, and the line connecting the center lines of the inlet end 102 and the outlet end 101 is L-shaped; the line connecting the center lines of the outlet end 101 and the inlet end 102 is L-shaped, that is, the axis where the outlet end 101 is located is perpendicular to the axis where the inlet end 102 is located and forms an L-shaped structure, the cross-section of the inlet end 102 is a circular hole structure, and the cross-section of the outlet end 101 is a triangular structure, so that when controlling the degree of connectivity between the outlet end 101 and the fluid channel, the flow rate of the outflowing medium can be made to have an approximate percentage change characteristic, thereby achieving fine adjustment of the flow rate.

[0031] In this embodiment, the fluid channel includes a first fluid channel 8, a second fluid channel 12 and a third fluid channel 4, the axes of the first fluid channel 8 and the second fluid channel 12 are respectively located on the same straight line, the axis of the third fluid channel 4 is perpendicular to the axes of the first fluid channel 8 and the second fluid channel 12, the inlet end 102 is connected to the third fluid channel 4, and the outlet end 101 can be operated to be connected or disconnected with the first fluid channel 8 or connected or disconnected with the second fluid channel 12; the first fluid channel 8, the second fluid channel 12 and the third fluid channel 4 can all be provided with a flange structure for connecting with an external pipeline, the axes of the first fluid channel 8 and the second fluid channel 12 are located on the same straight line, the axis of the third fluid channel 4 is perpendicular to the axes of the first fluid channel 8 and the second fluid channel 12, that is, the first fluid channel 8, the second fluid channel 12 and the third fluid channel 4 constitute a T-shaped structure, the outlet end 101 can be connected to the first fluid channel 8 or the second fluid channel 12, or is not connected to the first fluid channel 8 and the second fluid channel 12, so that the medium can be turned on and off.

[0032] In this embodiment, the sealing component I includes a sealing valve seat 7 and a reset member 6. A valve seat groove 16 is provided at the connection between the fluid channel and the valve cavity, which is opened around the circumference of the fluid channel. The sealing valve seat 7 is an annular structure and is installed in the valve seat groove 16. The reset member 6 is arranged between the sealing valve seat 7 and the valve seat groove 16 and constitutes a sealing valve seat 7 that is close to the valve core 1, thereby forming a sealing fit between the valve core 1 and the valve cavity; in this structure, the sealing valve seat 7 is two inner openings respectively arranged in the first fluid channel 8 and the second fluid channel 12. A valve seat groove 16 is formed on the inner wall of the first fluid channel 8 and the second fluid channel 12. The valve seat groove 16 is a stepped groove, which is convenient for installing the sealing valve seat 7. At the same time, a stepped groove that matches the valve seat groove 16 is formed on the outer peripheral surface of the sealing valve seat 7. The reset member 6 can be a spring or the like, and relative to Figure 1The left and right directions in the figure are arranged between the sealing valve seat 7 and the valve seat groove 16. When the connecting channel and the fluid channel are connected to each other, the sealing component I can form a sealing fit between the connecting channel and the fluid channel more effectively, so that the valve core 1 will not leak. At the same time, the sealing component I contacts the outer wall of the valve core 1 and forms a hard sealing fit, thereby forming a sealing fit between the valve core 1 and the valve cavity.

[0033] In this embodiment, the reset member 6 is a spring, and the sealing valve seat 7 is provided with a mounting groove for installing the spring, and the mounting groove is arranged on the side of the sealing valve seat 7 away from the valve cavity; the reset member 6 is a spring, so that it can exert elastic force on the valve seat to achieve a close fit between the sealing valve seat 7 and the valve core 1, and the outer wall of the sealing valve seat 7 is formed with a stepped mounting groove, and the mounting groove cooperates with the valve seat groove 16, so that an installation space for installing the spring is formed between the mounting groove and the valve seat groove 16.

[0034] In this embodiment, the sealing component I also includes a sealing ring 5, which is arranged between the sealing valve seat 7 and the valve seat groove 16, and the sealing valve seat 7 is provided with a sealing groove I for installing the sealing ring 5; in this structure, an installation space for installing the sealing ring 5 is formed by the cooperation between the sealing valve seat 7 and the valve seat groove 16, thereby further improving the sealing cooperation between the valve core 1 and the valve cavity.

[0035] In this embodiment, a round hole adapted to the valve stem 2 is provided on the top of the valve body 3, and one end of the valve stem 2 extends out of the round hole for cooperating with the driving mechanism; one end of the valve stem 2 extends out of the valve body 3 for cooperating with the driving mechanism;

[0036] It also includes a sealing component II, which is arranged on the valve body 3 for cooperating with the valve stem 2, including a packing gland 9 and a packing 11. The circular hole is provided with a sealing groove II15 for filling the packing 11. The packing gland 9 passes through the valve stem 2 and is fixedly connected to the valve body 3 through a fixing member, and is used to press the packing 11 against the surface of the valve stem 2; a sealing groove II15 for filling the packing 11 is provided on the inner wall of the circular hole, so as to facilitate filling the packing 11 into the gap between the valve stem 2 and the circular hole, and a packing gland 9 is provided at the same time. The packing gland 9 is fixedly connected to the valve body 3 through bolts, so as to facilitate pressing the packing 11 against the surface of the valve stem 2. By applying a pre-tightening force, the packing gland 9 causes the packing 11 to generate radial pressure, thereby holding the valve stem 2 tightly to prevent medium leakage. The packing 11 can be made of polytetrafluoroethylene and flexible graphite, etc.

[0037] In this embodiment, the driving mechanism includes an actuator 13, a support frame 14 and a connecting sleeve 10. The support frame 14 is fixedly connected to the valve body 3, the actuator 13 is fixed on the support frame 14, and the valve stem 2 is connected to the actuator 13 through the connecting sleeve 10; the actuator 13 can be an electric actuator, and the connection driving structure with the valve stem 2 is an application of the prior art, which is not repeated here. The support frame 14 and the valve body 3 can be fixedly connected by bolts, the support frame 14 is arranged above the valve stem 2, and the actuator 13 is installed on the support frame 14. The valve stem 2 is connected to the actuator 13 through the connecting sleeve 10, which is convenient for the actuator 13 to drive the valve stem 2 to rotate, and at the same time makes the connection stable, reducing the probability of the valve stem 2 being damaged.

[0038] The three-way ball valve of the present invention controls the connection or disconnection of the medium by adjusting the connection or disconnection between the outlet end 101 and the fluid channel. Figure 4 As shown, by notifying the degree of connectivity between the outlet end 101 and the fluid channel, the flow rate of the medium can be adjusted. At the same time, setting the shape of the outlet end 101 to a quasi-triangle shape can make the flow rate change present an approximate percentage change characteristic, which is conducive to fine adjustment of the flow rate.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A three-way ball valve, characterized in that: include: A valve body, comprising a valve cavity and a plurality of fluid channels communicating with the valve cavity; A valve core is arranged in the valve cavity. A sealing component I is arranged between the valve core and the valve cavity to form a sealing match with the valve cavity. The valve core is provided with a connecting channel. The connecting channel has an outlet end and an inlet end. The valve core can be driven to rotate so that the outlet end and the inlet end of the connecting channel are respectively connected to any two mutually perpendicular fluid channels, and the degree of connection between the outlet end and the fluid channel is adjustable; The valve stem has one end connected to the valve core and the other end passes through the valve body and is connected to an external driving mechanism for driving the valve core to rotate.

2. The three-way ball valve according to claim 1, characterized in that: The shape of the outlet end is triangular, the shape of the inlet end is circular, and the line connecting the center lines of the inlet end and the outlet end is an L-shaped structure.

3. The three-way ball valve according to claim 1, characterized in that: The fluid channel includes a first fluid channel, a second fluid channel and a third fluid channel, the axes of the first fluid channel and the second fluid channel are respectively located on the same straight line, the axis of the third fluid channel is perpendicular to the axes of the first fluid channel and the second fluid channel, the inlet end is connected to the third fluid channel, and the outlet end can be operated to be connected or not connected to the first fluid channel or to be connected or not connected to the second fluid channel.

4. The three-way ball valve according to claim 1, characterized in that: The sealing component I includes a sealing valve seat and a reset member. A valve seat groove opened around the circumference of the fluid channel is provided at the connection between the fluid channel and the valve cavity. The sealing valve seat is an annular structure and is installed in the valve seat groove. The reset member is arranged between the sealing valve seat and the valve seat groove and forms a sealing valve seat that fits against the valve core, thereby forming a sealing fit between the valve core and the valve cavity.

5. The three-way ball valve according to claim 4, characterized in that: The reset member is a spring, and a mounting groove for mounting the spring is arranged on the sealing valve seat, and the mounting groove is arranged on a side of the sealing valve seat away from the valve cavity.

6. The three-way ball valve according to claim 4, characterized in that: The sealing assembly I also includes a sealing ring, which is arranged between the sealing valve seat and the valve seat groove. The sealing valve seat is provided with a sealing groove I for installing the sealing ring.

7. The three-way ball valve according to claim 1, characterized in that: The top of the valve body is provided with a round hole adapted to the valve stem, and one end of the valve stem extends out of the round hole to cooperate with the driving mechanism; It also includes a sealing component II, which is arranged on the valve body for cooperating with the valve stem, including a packing gland and packing. The circular hole is provided with a sealing groove II for filling the packing. The packing gland passes through the valve stem and is fixedly connected to the valve body through a fixing part, so as to press the packing against the surface of the valve stem.

8. The three-way ball valve according to claim 1, characterized in that: The driving mechanism comprises an actuator, a support frame and a connecting sleeve. The support frame is fixedly connected to the valve body, the actuator is fixed on the support frame, and the valve stem is connected to the actuator via the connecting sleeve.

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