CN111350843B

CN111350843B - Ball valve

Info

Publication number: CN111350843B
Application number: CN201811582840.8A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Zhejiang Sanhua Automotive Components Co Ltd
Current assignee: Zhejiang Sanhua Automotive Components Co Ltd
Priority date: 2018-12-24
Filing date: 2018-12-24
Publication date: 2023-05-09
Anticipated expiration: 2038-12-24
Also published as: CN111350843A

Abstract

The invention discloses a ball valve, which comprises a driving mechanism, a transmission mechanism, a valve body assembly and a valve core component, wherein the valve body assembly comprises a first valve body component and a second valve body component, the first valve body component is fixedly connected with the second valve body component, the transmission mechanism comprises a first gear ring, at least one part of the valve core component is fixedly or in limit fit with the first gear ring, the valve core component comprises a platform part and a plane part, the platform part is positioned at or close to the rotation center of the valve core component, one side of the first gear ring, which faces the valve core component, is abutted against the platform part, and at least one part of one side of the first gear ring, which faces the valve core component, is kept at a certain distance from the plane part. By the arrangement, the ball valve is compact in structure.

Description

Ball valve

[ field of technology ]

The invention relates to the technical field of fluid control, in particular to a ball valve.

[ background Art ]

The electric ball valve can be used as a component of a thermal management system such as a new energy automobile air conditioning system and battery cooling system, and has the function of switching medium flow direction. The transmission mechanism and the valve core of the general electric ball valve are connected through the valve rod in a transmission way, one end of the valve rod is positioned outside the valve body, the other end of the valve rod stretches into the valve body, the transmission mechanism and the valve core are separated by the valve body at intervals, the valve core ball is limited to move up and down through the valve cover, and the structure is complex.

[ invention ]

Unlike the prior electric ball valve with a transmission mechanism and a valve core separately arranged, the invention provides a ball valve, which comprises a driving mechanism, a transmission mechanism, a valve body component and a valve core component, wherein the transmission mechanism is driven to act through the action of the driving mechanism, the valve body component comprises a first valve body component and a second valve body component, the first valve body component is fixedly connected with the second valve body component, the valve body component is provided with a containing cavity, the containing cavity comprises a first valve body component cavity and a second valve body component cavity, the first valve body component cavity is positioned in the first valve body component, the second valve body component cavity is positioned in the second valve body component, the valve core component is at least partially accommodated in the first valve body component cavity, the transmission mechanism is at least partially positioned in the second valve body component cavity, the transmission mechanism comprises a first gear ring, at least one part of the valve core component is fixedly or in limit fit with the first gear ring, the valve core component comprises a platform part and a flat part, the platform part is positioned at or near the rotation center of the valve core component, and the platform part is kept at least one side of the valve core part and the valve core part is kept at a certain distance from the platform part to the valve core.

The valve core component comprises a valve core ball and a valve core column, one end of the valve core column is fixedly connected or in limiting connection with the first gear ring, the other end of the valve core column is fixedly connected with the valve core ball or the valve core column and the valve core ball are of an integrated structure, and the outer diameter of the contact part of the first gear ring and the platform part in a propping way is smaller than the inner diameter of the first gear ring.

The first gear ring is provided with a central hole, one end of the valve core column extends into the central hole and is fixedly or limitedly connected with the first gear ring, the valve core ball is provided with the platform part at one side facing the first gear ring, and the valve core column is fixedly connected with the platform part or is in an integrated structure with the platform part;

or the valve core column comprises the platform part, and the platform part is fixed with the valve core ball or is in an integrated structure with the valve core ball;

the first gear ring is propped against the platform part towards one side of the valve core component, the outer diameter of the platform part is smaller than the inner diameter of the first gear ring, the valve core ball is further provided with a plane part towards one side of the first gear ring, the plane part is arranged around the platform part, the platform part protrudes out of the plane part in the direction towards the first gear ring, and at least one part of one side of the first gear ring towards the valve core component is kept at a certain distance with the plane part of the valve core ball.

The first gear ring is provided with a stepped hole part, the stepped hole part comprises a stepped part, the valve core column comprises a platform part, the platform part is positioned at one end of the valve core column facing the first gear ring, the valve core column stretches into the stepped hole part and is fixedly or limitedly connected with the first gear ring, the platform part is abutted to the stepped part, the valve core ball is further provided with a plane part at one side facing the first gear ring, and a certain distance is kept between at least one part of one side of the first gear ring facing the valve core component and the plane part of the valve core ball.

The valve core part is provided with at least one limit column on one side facing the inner bottom corresponding to the first valve body part cavity, a limit groove matched with the limit column is arranged on the inner bottom corresponding to the first valve body part cavity, and the limit column is in sliding fit with the limit groove.

The valve core component is provided with two spacing posts, spacing post symmetry sets up the axis both sides of valve core component, spacing recess includes two arc recesses, two the arc recess uses second blind hole portion is the center and is 90 arc angle setting, spacing post at least part stretches into the arc recess, works as one of them tip inner wall of arc recess with spacing post looks butt, the valve core component stops rotating.

The driving mechanism comprises a rotor component, a motor shaft component and a sleeve, wherein the rotor component is arranged in the sleeve, the motor shaft component is fixedly or limitedly connected with the sun gear, the sleeve is fixedly connected with the second valve body component or integrally formed, the first valve body component comprises a valve body part, the valve body part is provided with a port part, one end of the second valve body component is matched with the port part, an annular groove is further formed in the end face part of the port part, and a sealing gasket is arranged in the annular groove;

the transmission mechanism further comprises a second gear ring and a planet gear, wherein the second gear ring is fixedly connected with the second valve body part at one side of the second gear ring, which is opposite to the planet gear, or the second gear ring and the second valve body part are integrally formed.

The valve body comprises a valve body, wherein at least two opening parts are formed in the periphery of the valve body, a first protruding part protruding out of the inner periphery of the valve body is arranged on one side, close to the inner bottom of the valve body, of at least one opening part of the inner periphery of the valve body, one end, far away from the opening part, of the first protruding part extends to the inner bottom of the valve body, a first circular arc part is formed at one end, close to the opening part, of the first protruding part, and the first circular arc part is located below one opening part;

the second valve body part is provided with the second bulge towards one side of valve body portion, the second bulge with first bulge sets up relatively, the second bulge is close to the one end of opening is formed with the second circular arc portion, first circular arc portion with the second circular arc portion cooperatees be provided with sealing member between first circular arc portion with second circular arc portion, sealing member respectively with first circular arc portion with second circular arc portion compresses tightly the butt.

The inner peripheral wall of the valve body is provided with the first protruding parts protruding out of the inner peripheral wall of the valve body at one side of each opening part close to the inner bottom of the valve body, and the number of the second protruding parts arranged at one side facing the valve body of the second valve body part is the same as that of the first protruding parts; the inner peripheral wall of the valve body is further provided with a third protruding portion, the third protruding portion extends from the inner bottom of the valve body to the top of the valve body, one side of the third protruding portion is connected with the first protruding portion corresponding to the opening, at least a part of the third protruding portion is located between the two second protruding portions, and the second protruding portions are limited between the two third protruding portions.

The thickness of the part of the third bulge, which is positioned between the two second bulges, is smaller than or equal to the thickness of the first bulge;

the third bulge is provided with a first convex-concave part on two sides of one end close to the top of the valve body part, the second bulge is provided with a second convex-concave part on a part corresponding to the first convex-concave part, and the first convex-concave part is matched with the second convex-concave part;

the junction of the part of third bulge that thickness is little and the part of thickness is big is formed with the shoulder, second valve body part still is provided with the fourth bulge between two the second bulge, the fourth bulge with the shoulder sets up relatively, the fourth bulge towards the one end of valve body part with the shoulder looks butt.

The valve core part of the ball valve comprises a platform part and a plane part, wherein the platform part is positioned at or close to the rotation center of the valve core part, one side of the first gear ring facing the valve core part is abutted against the platform part, and at least one part of one side of the first gear ring facing the valve core part is kept at a certain distance from the plane part. By the arrangement, the ball valve is compact in structure.

Drawings

FIG. 1 is a schematic perspective view of a ball valve according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the ball valve of FIG. 1;

FIG. 3 is a schematic perspective view of a rotor assembly of the ball valve of FIG. 1;

FIG. 4 is a schematic perspective view of a sleeve and a second valve body member of the ball valve of FIG. 1;

FIG. 5 is a schematic perspective view of a first valve body component of the ball valve of FIG. 1;

FIG. 6 is a schematic perspective view of the transmission mechanism of the ball valve of FIG. 1;

FIG. 7 is a schematic perspective view of a first ring gear of the ball valve of FIG. 1;

FIG. 8 is a schematic perspective view of a valve element assembly of the ball valve of FIG. 1;

FIG. 9 is a schematic perspective view of another view of the spool assembly of the ball valve of FIG. 1;

FIG. 10 is a schematic perspective view of another view of a first valve body member of the ball valve of FIG. 1;

FIG. 11 is a schematic cross-sectional view of the ball valve in a first operational state;

FIG. 12 is a schematic cross-sectional view of the ball valve in a second operational state;

FIG. 13 is a schematic perspective view of another view of the sleeve and second valve body member;

FIG. 14 is a schematic cross-sectional view of the sleeve and valve body assembly.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

An embodiment of the present invention is shown in fig. 1 to 14. The ball valve of the present embodiment includes a drive mechanism 10, a valve body assembly 11, a transmission mechanism 12, and a spool member 13. As shown in fig. 2, the driving mechanism 10 includes a stator coil 1, a motor shaft part 2, a rotor part 3 and a sleeve 8, the motor shaft part 2 is fixedly connected with the rotor part 3, the rotor part 3 rotates to drive the motor shaft part 2 to rotate, the sleeve 8 is a tubular body with one end closed, the stator coil 1 is sleeved on the sleeve 8, and at least part of the rotor part 3 is arranged in the sleeve 8.

As shown in fig. 3, the rotor component 3 is provided with a first through hole 55 at or near the axial center line, the motor shaft component 2 passes through the first through hole 55, the motor shaft component 2 is fixedly connected with the rotor component 3 through injection molding, and the motor shaft component 2 and the rotor component 3 can be provided with key grooves for matching, so that the combination firmness of the motor shaft component 2 and the rotor component 3 is enhanced.

Defining the closed end of the sleeve 8 as the top, as shown in fig. 4, a first blind hole 82 protruding outwards is arranged at or near the center of the top of the sleeve 8, one end of the motor shaft part 2, which is close to the rotor part 3, extends into the first blind hole 82, the motor shaft part 2 is in clearance fit with the first blind hole 82, and the first blind hole 82 plays a limiting role on the motor shaft part 2.

As shown in fig. 1 and 2, the valve body assembly 11 includes the first valve body part 4 and the second valve body part 6, and when the valve body assembly 11 is made of a plastic material, the sleeve 8 and the second valve body part 6 may be integrally formed through an injection molding process, as shown in fig. 4, so configured, the sealing property between the sleeve 8 and the second valve body part 6 is better. It should be noted here that the sleeve 8 and the second valve body part 6 may also be fixedly connected by means of a connecting seat.

As shown in fig. 5, the first valve body member 4 includes a valve body portion 40, one end of the valve body portion 40 is opened, the valve body portion 40 includes a port portion 45, the port portion 45 is located at an open end of the valve body portion 40, one end defining the opening of the valve body portion 40 is a top, the other opposite end is a bottom, one end of the second valve body member 6 is matched with the port portion 45 and is fixed to the valve body portion 40 through bolting, and it should be noted here that the second valve body member 6 and the valve body portion 40 may be fixedly connected through welding or other forms.

The end face portion of the port portion 45 of the valve body portion 40 is further provided with an annular groove 450, and the annular groove 450 is provided with a gasket, so that the sealing property of the junction of the second valve body member 6 and the valve body portion 40 is improved. It should be noted here that when the second valve body member 6 and the valve body portion 40 are fixed by welding, a gasket may not be required.

As shown in fig. 2, the valve body assembly 11 is formed with a receiving chamber including a first valve body member chamber 50, the first valve body member chamber 50 being located in the valve body portion 40, the valve core member 13 being at least partially received in the first valve body member chamber 50, the receiving chamber further including a second valve body member chamber 65, the second valve body member chamber 65 being located in the second valve body member 6, and the transmission mechanism 12 being at least partially located in the second valve body member chamber 65.

As shown in fig. 2 and 6, the transmission mechanism 12 includes a sun gear 20, planetary gears 21, a first ring gear 22, a second ring gear 23, a first mounting plate 24, a second mounting plate 25, and gear shafts 26, in this embodiment, the number of planetary gears 21 is three, the number of corresponding gear shafts 26 is also three, the first mounting plate 24 and the second mounting plate 25 may be in a circular ring structure, a central circular through hole is convenient for the cooperation of the motor shaft component 2 and the sun gear 20, three planetary gears 21 are rotatably disposed between the first mounting plate 24 and the second mounting plate 25 through the gear shafts 26, and all three planetary gears 21 are in meshed connection with the sun gear 20.

The first ring gear 22 and the second ring gear 23 each have an internal tooth portion, one end of the planetary gear 21 is in meshed connection with the first ring gear 22 at the internal tooth portion of the first ring gear 22, and the opposite end of the planetary gear 21 is in meshed connection with the second ring gear 23 at the internal tooth portion of the second ring gear 23. The second ring gear 23 is fixedly connected to the second valve body part 6 on the side facing away from the planet gears 2, for example by means of an interference fit or a limit fit, mounted to the second valve body part 6.

It should be noted here that, when both the second valve body part 6 and the second ring gear 23 are made of plastic material,

the second gear ring 23 can be integrally formed with the second valve body member 6, for example, by injection molding, so that the number of parts of the ball valve is reduced, and the assembly is more convenient.

The motor shaft part 2 is in transmission connection with the transmission mechanism 12, the sun gear 20 is provided with a through hole 56 at or near the axial center line, the motor shaft part 2 penetrates through the through hole 56, the motor shaft part 2 and the sun gear 20 can be in interference press fit or clamping connection, and when the motor shaft part 2 rotates, the sun gear 20 synchronously rotates, and then the planet gears and the gear rings are driven to rotate. At the same transmission ratio, the transmission mechanism is relatively compact in structure and small in volume, so that the volume of the ball valve is relatively reduced.

As shown in fig. 7, the first gear ring 22 has a central hole 220, as shown in fig. 8, the spool component 13 includes a spool ball 130 and a spool post 30, one end of the spool post 30 extends into the central hole 220, and the spool post 30 can be configured by interference press-connection or special-shaped configuration of the central hole 220, and accordingly, the spool post 30 is matched with the first gear ring 22 to realize rotation driving, that is, the spool post 30 is matched with the first gear ring 22 to realize rotation of the spool post 30 by the first gear ring 22. The opposite end of the spool post 30 is in transmission connection with the spool ball 130 or the spool post 30 and the spool ball 130 are in an integral structure, and when the spool post 30 rotates, the spool ball 130 can be driven to rotate together.

It should be noted that the spool ball 130 may also be provided with a slot, and the spool post 30 cooperates with the slot to implement rotation driving. In the present embodiment, the spool post 30 and the spool ball 130 are integrally formed.

It should also be noted that the spool ball 130 may be provided in a generally cylindrical or oval shape.

As shown in fig. 8 and 2, the spool ball 130 includes a land portion 131, the land portion 131 is located at or near the rotation center of the spool member 13, the spool post 30 is fixed to the land portion 131 or the spool post 30 is integrally formed with the land portion 131, or the spool post 30 includes a land portion 131, the land portion 131 is fixed to the spool ball 130 or the land portion 131 is integrally formed with the spool ball 130. The side of the first ring gear 22 facing the spool member 13 is abutted against the land portion 131, and the outer diameter L1 of the land portion 131 is smaller than the inner diameter L2 of the first ring gear 22, thereby reducing the driving force required to drive the spool member 13.

As shown in fig. 8, the spool ball 130 is further provided with a flat portion 132 on the side facing the first ring gear 22, the flat portion 132 is provided around the flat portion 131, and the flat portion 131 protrudes from the flat portion 132 in the direction facing the first ring gear 22, as shown in fig. 2, with a distance being maintained between at least a part of the side of the first ring gear 22 facing the spool member 13 and the flat portion 132. Here, it should be noted that the flat surface portion 132 may be provided as a curved surface portion, a tapered surface portion, or the like.

Here, it should be noted that in the present embodiment, the transmission mechanism 12 is in direct contact with the valve core member 13, that is, the side of the first gear ring 22 facing the valve core member 13 is abutted against the platform 131, so that the valve cover of the first valve body member 4 is omitted, the parts of the ball valve are reduced, and the structure of the ball valve can be made compact.

It should be further noted that the center hole 220 of the first gear ring 22 may also be configured as a stepped hole portion, where the stepped hole portion includes a stepped portion, the spool post 30 includes a land portion, the land portion is located at an end of the spool post 30 facing the first gear ring 22, the spool post 30 extends into the stepped hole portion, the land portion of the spool post 30 abuts against the stepped portion, and a flat portion is further disposed on a side of the spool ball 130 facing the first gear ring 22, and a certain distance is maintained between a side of the first gear ring 22 facing the spool member 13 and the flat portion of the spool ball, so that a diameter of a contact surface between the first gear ring 22 and the spool member 13 is smaller, which is more advantageous for reducing a driving force required for driving the spool member 13. Here, the first ring gear 22 having the stepped hole portion may be simultaneously abutted against the two types of flat portions.

As shown in fig. 8, the spool member 13 is provided with a second through hole 57 at or near the axial center line, and a part of the second through hole 57 is located in the spool post 30 and a part is located in the spool ball 130. The motor shaft part 2 passes through the second through hole 57, and the motor shaft part 2 is in clearance fit with the corresponding inner wall of the second through hole 57, which should be noted that when the motor shaft part 2 rotates, the valve core part 13 cannot be directly driven to rotate, and the valve core part 13 can be driven to rotate through the first gear ring 22.

As shown in fig. 10, the valve body 40 further includes an inner bottom 47, the inner bottom 47 is provided with a second blind hole portion 49 at a position corresponding to the second through hole 57, an axis of the second blind hole portion 49 coincides with or approximately coincides with an axis of the first blind hole portion 82, one end of the motor shaft member 2 near the valve core member 13 extends into the second blind hole portion 49, the motor shaft member 2 is in clearance fit with the second blind hole portion 49, and the second blind hole portion 49 plays a role in limiting the motor shaft member 2.

In this embodiment, the motor shaft part 2 sequentially passes through the rotor part 3, the sun gear 20 and the valve core part 13, one end of the motor shaft part 2 is limited at the first blind hole part 82, the opposite end is limited at the second blind hole part 49, and the motor shaft part 2 and the valve core part 13 are in clearance fit, so that the valve core part 13 can be prevented from deflecting and shaking in the rotation process, and the stability of the valve core part 13 is improved.

As shown in fig. 9, the spool part 13 is further provided with at least one limit post 31 on a side facing the inner bottom 47, in this embodiment, two limit posts 31 are provided, the limit posts 31 are symmetrically disposed on both sides of the axis of the spool part 13, and the two limit posts 31 may be integrally formed with the spool part 13.

As shown in fig. 10, the inner bottom 47 of the valve body 40 is provided with a limit groove matched with the limit post 31, the limit post 31 is slidably matched with the limit groove, the limit groove includes at least one arc groove 32, in this embodiment, the limit groove includes two arc grooves 32, and the two arc grooves 32 are symmetrically distributed with the second blind hole 49 as a center.

The spacing post 31 stretches into arc recess 32 at least partially, sliding fit between the inner wall of arc recess 32 and the spacing post 31, through carrying out spacingly with the inner wall cooperation of arc recess 32, the rotation scope of case part 13 can be restricted to the both ends portion of arc recess 32, when case part 13 clockwise rotates, when the inner wall of one of them tip of arc recess 32 and spacing post 31 looks butt, case part 13 stops rotating in clockwise, can restrict the rotation scope of case part 13 through setting up the circular arc angle size between the both ends portion of arc recess 32 in general, in this embodiment, the circular arc angle of arc recess 32 is established to 90, should know here, in different operational environment, the circular arc angle can the adaptability setting.

The working principle is as follows: when the motor shaft part 2 rotates clockwise, the sun gear 20 is driven to rotate clockwise, the planetary gear 21 is driven to rotate through engagement connection, the second gear ring 23 is fixed, the planetary gear 21 rotates around the axis of the planetary gear, and meanwhile, the sun gear 1 rotates circumferentially, namely, the motor shaft part 2 is used as the center to rotate in an engaged mode with the second gear ring 23, and then the first gear ring 22 is driven to rotate, the first gear ring 22 drives the valve core column 30 to rotate together, meanwhile, the valve core column 30 drives the valve core ball 130 to rotate, the rotation angle is from 0 degree to 90 degrees, when the inner wall of one end portion of the arc-shaped groove 32 abuts against the limit column 31, the valve core part 13 stops rotating in the rotating direction, and the motor shaft part 2 rotates anticlockwise.

As shown in fig. 5, the valve body 40 is further provided with a first opening 401, a second opening 402, a third opening 403, and a fourth opening 404, and the first opening 401, the second opening 402, the third opening 403, and the fourth opening 404 are provided on the peripheral side of the valve body 40 in the order of clockwise or counterclockwise, and are provided symmetrically with respect to the center of the valve body 40.

The first valve body member 4 further includes a first interface portion 41, a second interface portion 42, a third interface portion 43, and a fourth interface portion 44, as shown in fig. 11, the first interface portion 41 is provided with a first passage 71, the second interface portion 42 is provided with a second passage 72, the third interface portion 43 is provided with a third passage 73, the fourth interface portion 44 is provided with a fourth passage 74, one end of the first interface portion 41 is fixedly connected with the first opening portion 401 and the joint is sealed, one end of the second interface portion 42 is fixedly connected with the second opening portion 402 and the joint is sealed, one end of the third interface portion 43 is fixedly connected with the third opening portion 403 and the joint is sealed, and one end of the fourth interface portion 44 is fixedly connected with the fourth opening portion 404 and the joint is sealed.

As shown in fig. 11, the spool ball 130 is provided with a first spool channel 14 and a second spool channel 15 inside, and the ball valve of the present invention includes at least two working states: a first operation state in which the first passage 71 communicates with the second passage 72 through the first spool passage 14, and the third passage 73 communicates with the fourth passage 74 through the second spool passage 15, as shown in fig. 11; in the second operating state, as shown in fig. 12, the first passage 71 communicates with the fourth passage 74 through the first spool passage 14, and the second passage 72 communicates with the third passage 73 through the second spool passage 15.

As shown in fig. 5, the inner peripheral wall of the valve body 40 is provided with a first protruding portion 411 in the vicinity of one side of the first opening portion 401 near the inner bottom portion 47, the first protruding portion 411 protrudes inward with respect to the inner peripheral wall of the valve body 40, one end of the first protruding portion 411 away from the first opening portion 401 extends to the inner bottom portion 47, one end of the first protruding portion 411 near the first opening portion 401 is formed with a first circular arc portion 412, and the first circular arc portion 412 is located below the first opening portion 401. The central axis corresponding to the first circular arc portion 412 coincides or approximately coincides with the central axis of the first opening 401, and the size of the central angle corresponding to the first circular arc portion 412 is not particularly limited herein, and in this embodiment, the central angle corresponding to the first circular arc portion 412 is 180 °, so that the demolding process during injection molding of the valve body 40 is facilitated.

As shown in fig. 13, the second valve body member 6 is provided with a second protruding portion 511 on a side facing the valve body portion 40, the second protruding portion 511 is disposed opposite to the first protruding portion 411, the second protruding portion 511 is located at an upper portion of the first protruding portion 411, a second circular arc portion 512 is formed at an end of the second protruding portion 511 near the first opening portion 401, the second circular arc portion 512 is disposed opposite to the first circular arc portion 412, a central axis corresponding to the second circular arc portion 512 coincides with or approximately coincides with a central axis of the first opening portion 401, a magnitude of a central angle corresponding to the second circular arc portion 512 is not particularly limited here, and in the present embodiment, the central angle corresponding to the second circular arc portion 512 is 180 °. As shown in fig. 14, the first circular arc portion 412 and the second circular arc portion 512 cooperate to form a cylindrical space 60.

As shown in fig. 2, the ball valve is further provided with a seal ring 90 in the space 60, the seal ring 90 is limited to the first arc portion 412 and the second arc portion 512, the inner diameter of the seal ring 90 is larger than the diameter of the first channel and the diameter of the internal channel of the valve core member 13, one end of the seal ring 90 is abutted against the inner wall corresponding to the valve body 40, the opposite end of the seal ring 90 is abutted against the outer wall corresponding to the valve core member 13, and the seal ring 90 is also respectively pressed against the first arc portion 412 and the second arc portion 512.

In the prior art, in order to install the sealing ring, the first opening part and the first valve body part are separated, the sealing ring is installed through the joint of the first opening part and the first valve body part, the sealing ring is required to be installed in the first valve body part, then the first opening part and the first valve body part are fixed in a welding mode, a screwing mode and the like, and the direction of installing the valve core part into the first valve body part is inconsistent with the direction of installing the sealing ring into the first valve body part. In the present embodiment, the sealing ring 90 is limited by the cooperation of the first arc portion 412 and the second arc portion 512, and the valve body 40 is provided with the first protruding portion 411 and the second valve body member 6 and the second protruding portion 511, so that the sealing ring 90 is relatively easy to assemble, the valve core member 13 and the sealing ring 90 are both assembled into the first valve body member from the port portion 45, and the component assembly is relatively simple.

The ball valve is formed with a cylindrical space in the second opening 402, the third opening 403 and the fourth opening 404 in the same or similar manner, and is provided with a sealing ring, which will not be described in detail herein.

As shown in fig. 5, the inner peripheral wall of the valve body 40 is further provided with a third protruding portion 46 between the first opening portion 401 and the second opening portion 402, the third protruding portion 46 extending from the inner bottom portion 47 of the valve body 40 to the top of the valve body 40, and in this embodiment, one side of the third protruding portion 46 is smoothly connected or approximately smoothly connected to the first protruding portion 411 corresponding to the first opening portion 401, and the opposite side of the third protruding portion 46 is smoothly connected or approximately smoothly connected to the first protruding portion 411 corresponding to the second opening portion 402. At least a part of the third protruding portion 46 is located between the two second protruding portions 511, and the second protruding portion 511 is limited between the two third protruding portions 46, so that the matching accuracy of the second protruding portion 511 and the first protruding portion 411 can be improved.

The third protrusion 46 is provided with a first concave-convex portion 461 at both sides of one end near the top of the valve body 40, and the second protrusion 511 is provided with a second concave-convex portion 513 at a portion corresponding to the first concave-convex portion 461, and the first concave-convex portion 461 and the second concave-convex portion 513 are matched, so that the second valve body member 6 and the valve body 40 can be combined more firmly.

The thickness of the portion of the third protrusion 46 between the two second protrusions 511 is smaller than that of the first protrusion 411, and a shoulder 460 is formed at the junction of the portion of the third protrusion 46 having a small thickness and the portion having a large thickness. The second valve body member 6 is further provided with a fourth protrusion 48 between the two second protrusions 511, and both sides of the fourth protrusion 48 are smoothly connected or nearly smoothly connected with the second protrusions 511. The fourth protruding portion 48 is disposed opposite to the shoulder portion 460, and one end of the fourth protruding portion 48 facing the valve body portion 40 abuts against the shoulder portion 460, so that the second valve body member 6 can be limited.

Between the second opening 402 and the third opening 403, between the third opening 403 and the fourth opening 404, between the fourth opening 404 and the first opening 401, a third protrusion and a concave portion of the third protrusion are provided in the same or similar manner, and the second valve body member 6 is also provided with a corresponding concave portion in the same or similar manner, which will not be described in detail here.

It should be noted that: the above embodiments are only for illustrating the present invention and not for limiting the technical solutions described in the present invention, for example, the directions of "front", "rear", "left", "right", "up", "down", etc., and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present invention may be modified or substituted by the same, and all technical solutions and modifications thereof without departing from the spirit and scope of the present invention are intended to be included in the scope of the claims of the present invention.

Claims

1. The ball valve comprises a driving mechanism, a transmission mechanism, a valve body assembly and a valve core component, wherein the transmission mechanism is driven to act through the action of the driving mechanism, and the valve core component is driven to act through the action of the transmission mechanism.

2. The ball valve according to claim 1, wherein the spool member includes a spool ball and a spool post, one end of the spool post is fixedly connected or in a limit fit with the first ring gear, the other end of the spool post is fixed with the spool ball or the spool post is in an integral structure with the spool ball, and an outer diameter of a contact portion of the first ring gear abutting against the platform portion is smaller than an inner diameter of the first ring gear.

3. The ball valve according to claim 2, wherein the first gear ring has a central hole, one end of the spool post extends into the central hole and is fixed or in limit fit with the first gear ring, the spool ball is provided with the platform part on one side facing the first gear ring, and the spool post is fixed with the platform part or is in an integral structure with the platform part;

4. The ball valve according to claim 2, wherein the first ring gear has a stepped hole portion including a stepped portion, the spool post includes the land portion, the land portion is located at an end of the spool post facing the first ring gear, the spool post extends into the stepped hole portion and is fixed or in a limited fit with the first ring gear, the land portion abuts against the stepped portion, the spool ball is further provided with the land portion on a side facing the first ring gear, and a distance is maintained between at least a portion of a side of the first ring gear facing the spool member and the land portion of the spool ball.

5. The ball valve according to claim 3 or 4, wherein the valve core component is further provided with at least one limit post on a side facing the inner bottom corresponding to the first valve body component cavity, the inner bottom corresponding to the first valve body component cavity is provided with a limit groove matched with the limit post, and the limit post is slidably matched with the limit groove.

6. The ball valve according to claim 5, wherein the valve core component is provided with two limit posts, the limit posts are symmetrically arranged on two sides of the axis of the valve core component, the limit posts comprise two arc-shaped grooves, the two arc-shaped grooves are arranged with the axis of the valve core component as a center and form an arc angle of 90 degrees, the limit posts at least partially extend into the arc-shaped grooves, and when the inner wall of one end part of the arc-shaped grooves is abutted against the limit posts, the valve core component stops rotating.

7. The ball valve of claim 6, wherein the drive mechanism comprises a rotor component, a motor shaft component and a sleeve, the rotor component is arranged on the sleeve, the transmission mechanism comprises a sun gear, the motor shaft component is fixedly or limitedly connected with the sun gear, the sleeve is fixedly or integrally formed with the second valve body component, the first valve body component comprises a valve body part, the valve body part is provided with a port part, one end of the second valve body component is matched with the port part, the end face part of the port part is further provided with an annular groove, and the annular groove is provided with a sealing gasket;

8. The ball valve according to claim 7, wherein at least two opening portions are opened on a peripheral side of the valve body portion, a first protruding portion protruding from an inner peripheral wall of the valve body portion is provided on a side of at least one of the opening portions near an inner bottom portion of the valve body portion, an end of the first protruding portion away from the opening portion extends to an inner bottom portion of the valve body portion, a first circular arc portion is formed at an end of the first protruding portion near the opening portion, and the first circular arc portion is located below the one of the opening portions;

9. The ball valve according to claim 8, wherein an inner peripheral wall of the valve body portion is provided with the first projecting portions projecting from the inner peripheral wall of the valve body portion on a side of each of the opening portions near an inner bottom portion of the valve body portion, and the number of the second projecting portions provided on a side toward the valve body portion is the same as the number of the first projecting portions; the inner peripheral wall of the valve body is further provided with a third protruding portion, the third protruding portion extends from the inner bottom of the valve body to the top of the valve body, one side of the third protruding portion is connected with the first protruding portion corresponding to the opening, at least a part of the third protruding portion is located between the two second protruding portions, and the second protruding portions are limited between the two third protruding portions.

10. The ball valve of claim 9, wherein a thickness of a portion of the third protrusion between the two second protrusions is less than or equal to a thickness of the first protrusion;