CN215334606U - Track ball valve - Google Patents

Abstract

The utility model relates to a track ball valve, which comprises a valve body with a flow channel, a valve port sealing element arranged on the flow channel of the valve body, a ball body assembly matched with the valve port sealing element, and a driving mechanism, wherein the ball body is provided with a ball inlet and a ball outlet; the spheroid subassembly is including the ball mount that has central through-hole, rigid coupling in the guide's spheroid of ball mount, and locate guide's spheroid outlying spheroid, carries out elastic connection with elastic connection subassembly between spheroid and the ball mount, and the ball mount can drive guide's spheroid and make for spheroidal aversion to make and form clearance passageway between guide's spheroid and the spheroid, and the ball mount can act on the spheroid through elastic connection subassembly, in order to close clearance passageway. The ball fixing frame of the utility model drives the pilot ball body to move relatively to the ball body with small resistance, and then the flow passage of the valve body is communicated, so that the movement of the ball body assembly is driven conveniently, the track ball valve is not influenced by the pressure of a medium in a pipeline when working, and the track ball valve is suitable for a pipeline with large caliber and high pressure medium circulation.

Description

Track ball valve

Technical Field

The utility model relates to the technical field related to electric valves, in particular to a track ball valve.

Background

Along with the continuous development of the internet of things technology, the existing valve applied to the natural gas conveying pipeline and used for controlling the conduction or the separation of pipeline fluid is usually an electric valve, and the electric valve is matched with a flowmeter to be used, so that the automation of the conduction and the separation of media in the pipeline is realized.

The electric valve is driven by direct current low voltage, and the conduction or the separation of the valve body flow passage is controlled by controlling the motion track of the ball sealing element blocked on the valve body flow passage. Specifically, when the electric valve works and switches the medium in the pipeline into conduction from a partition, the ball sealing element is driven to shift a small amount to release the medium blocked by the ball sealing element, and then the ball sealing element is driven to rotate by 90 degrees to completely open the flow channel of the valve body and enable the medium in the flow channel of the valve body to be conducted.

At present, a ball sealing element in an existing electric valve is generally of an integrated structure, and the ball sealing element is matched with a valve port sealing element fixedly connected to a valve body, so that the conduction or the separation of a valve body flow channel is controlled. Because the driving motor that current electric valve during operation adopted is less for current electric valve can't be applicable to the pipeline of heavy-calibre and high pressure medium circulation and use, because the medium of high pressure produced pressure on the spheroid sealing member is great, and the effort of current driving motor during operation to the motion drive of spheroid sealing member is less, can't realize the motion drive to the spheroid sealing member. Therefore, a pipeline with a large caliber and high pressure medium circulation can only adopt a conventional manual control valve, and the aim of automatically controlling a medium flow passage in the pipeline cannot be fulfilled.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide an orbital ball valve suitable for a large-diameter pipe through which a high-pressure medium flows.

In order to solve the technical problem, the application provides the following technical scheme:

a track ball valve comprises a valve body with a flow channel, a valve port sealing element arranged on the flow channel of the valve body, a ball body assembly matched with the valve port sealing element, and a driving mechanism, wherein the driving mechanism can drive the ball body assembly to be matched with the valve port sealing element so as to enable the flow channel of the valve body to be conducted or cut off; the ball body assembly comprises a ball fixing frame with a central through hole, a pilot ball body fixedly connected to the ball fixing frame and a ball body arranged on the periphery of the pilot ball body, the ball body is provided with an outer sealing surface and an inner sealing surface, the outer sealing surface of the ball body can abut against the valve port sealing element to enable the ball body to be in sealing fit with the valve port sealing element, and the inner sealing surface of the ball body can abut against the pilot ball body to enable the ball body to be in sealing fit with the pilot ball body; the ball body is elastically connected with the ball fixing frame through the elastic connecting assembly, the ball fixing frame can drive the pilot ball body to shift relative to the ball body, so that a gap channel is formed between the pilot ball body and the ball body, and the ball fixing frame can act on the ball body through the elastic connecting assembly to close the gap channel.

According to the track ball valve, through the reasonable structural arrangement of the ball body assembly, when the track ball valve works, the sealing between the ball body and the pilot ball body is firstly removed, a gap channel is formed, so that the pressure relief effect is achieved, the ball body and the pilot ball body are not in direct contact with a medium in a flow channel of the valve body, so that the ball fixing frame drives the pilot ball body to have small resistance when the ball body moves relative to the ball body, then the flow channel of the valve body is conducted, the movement of the ball body assembly is conveniently driven, the track ball valve does not be influenced by the pressure of the medium in the pipeline when working, the track ball valve is further suitable for a pipeline with a large caliber and high pressure medium circulation, the use of a manual valve is replaced, the intellectualization of the control of the flow channel in the pipeline is achieved, and the use requirement of the technology of the Internet of things is met.

As a preferred aspect of the present invention, the elastic connection assembly includes a connection bolt and a spring sleeved on the connection bolt, the connection bolt penetrates through the ball fixing frame and is screwed with the ball, wherein the spring is disposed on a portion of the connection bolt located in the ball fixing frame.

In the utility model, the elastic connecting assembly adopts the structure arrangement, so that the elastic connection between the ball body and the ball fixing frame is realized, and the elastic connecting assembly has the simplified structure and is convenient for assembling the ball body on the ball fixing frame.

As a preferable aspect of the present invention, a guide member is provided on an end surface of one side of the ball body facing the ball holder, a guide mating member matched with the guide member is provided on the ball holder, and the ball body is guided and limited by the guide member and the guide mating member.

In the utility model, through the structural arrangement of the guide piece and the guide matching piece, the relative movement between the ball body and the ball fixing frame is guided, so that the ball body can be reset under the drive of the elastic connecting assembly, and the ball body can be matched with the pilot ball body again and sealed.

As a preferable aspect of the present invention, the pilot ball includes a pilot ball main part fixedly connected to the ball fixing frame, and a pilot sealing ring, the pilot sealing ring is sleeved on the pilot ball main part and is compressed and limited by the pilot ball main part, and an inner sealing surface of the ball can abut against the pilot sealing ring, so that the ball and the pilot ball are sealed in a matching manner.

In the utility model, through the structure, the pilot ball body is matched with the inner sealing surface of the ball body by the pilot sealing ring, so that the sealing performance when the ball body is matched with the pilot ball body is ensured.

As a preferable scheme of the present invention, a limiting boss is disposed on an end portion of one side of the pilot sphere main part, which is far away from the ball fixing frame, and the pilot sphere main part can be pressed against the pilot sealing ring through the limiting boss, so as to press and limit the pilot sealing ring on the ball fixing frame.

In the utility model, through foretell structure setting, specifically realize guide's spheroid main part and compress tightly the guide's sealing ring on the ball mount.

As a preferred embodiment of the present invention, a positioning convex ball is fixedly connected to the ball fixing frame, a positioning groove matched with the positioning convex ball is formed in the valve body, and the ball fixing frame is assembled and limited with the valve body by the cooperation between the positioning convex ball and the positioning groove, so that the ball fixing frame can move relative to the valve body with the positioning convex ball as a positioning center point.

In the utility model, the ball fixing frame can utilize the structural characteristics of the positioning convex ball, so that the positioning convex ball is in point contact with the groove wall of the positioning groove on the valve body when the ball fixing frame moves on the valve body, thereby playing a role of reducing the friction resistance of the valve body when the ball fixing frame moves.

In a preferred embodiment of the present invention, the driving mechanism includes a gear driving assembly, a driving screw connected to the gear driving assembly, a driving nut screwed to the driving screw, a lifting shaft fixed to the driving nut, and a rail assembly, wherein a swash plate is provided at an end of the lifting shaft remote from the driving nut, the lifting shaft is engaged with the ball holder through the swash plate, and the rail assembly is engageable with the driving nut so that the driving nut can perform an axial movement with respect to the driving screw and then a rotational movement with respect to the driving screw under guidance of the rail assembly.

According to the track ball valve, due to the structural arrangement, the track ball valve can utilize the threaded fit between the driving lead screw and the driving nut and the guiding limit of the guide rail assembly to the driving nut, so that when the driving mechanism works, the driving nut drives the transmission inclined plate on the lifting shaft to firstly shift and drive the ball fixing frame, and then the rotary drive of the whole ball assembly is realized, so that the use requirement of the track ball valve in working is met; meanwhile, the driving mechanism is simple and reasonable in structure, and has the effects of reducing cost and improving the working stability of the driving mechanism.

As a preferable scheme of the present invention, the driving nut is provided with an outer edge at an end portion of one side away from the lifting shaft, and the lifting shaft is sleeved on the driving nut and is connected and fixed by a screw penetrating through the outer edge.

In the utility model, through the structural arrangement, the assembly connection between the driving nut and the lifting shaft is realized, and the lifting shaft is convenient to fix on the driving nut.

As a preferred scheme of the present invention, the guide rail assembly includes a flange cover plate fixedly connected to the valve body, and a support seat disposed on the flange cover plate, and the flange cover plate is matched with the support seat and forms a linear guide groove and a rotary guide groove; the driving nut is transversely and fixedly connected with a connecting cross rod, the connecting cross rod penetrates through the lifting shaft, a part of the connecting cross rod penetrating through the lifting shaft is connected with a roller, and the roller is arranged on the position of the linear guide groove or the rotary guide groove on the guide rail assembly.

In the utility model, the guide rail assembly is designed into the structure of the flange cover plate and the support seat so as to meet the action of the guide rail assembly on the movement guide of the lifting shaft driven by the driving lead screw by the driving nut, and the guide rail assembly has the function of simplifying the structure so as to facilitate the assembly and the connection between the driving mechanism and the valve body.

As a preferable scheme of the present invention, the orbit ball valve further comprises a reluctance switch, and the reluctance switch can detect the position of the driving nut and generate a feedback signal.

In the utility model, through the structural arrangement, the signal feedback of the conduction or the separation control of the ball body assembly on the flow passage of the valve body is realized when the track ball valve works, so that the intellectualization of the control of the track ball valve is realized.

Drawings

Fig. 1 is a sectional view of an orbital ball valve according to an embodiment of the utility model.

Fig. 2 is an enlarged view of the P portion in the present invention.

Fig. 3 is an enlarged view of the portion Q in the present invention.

FIG. 4 is an exploded assembly view of the drive screw, drive nut, lift shaft and ball assembly of the present invention.

FIG. 5 is an assembled exploded view from another perspective of the drive screw, drive nut, lift shaft and ball assembly of the present invention.

Fig. 6 is a schematic structural view of the guide rail assembly of the present invention.

Fig. 7 is a schematic structural view of the flange cover plate of the present invention.

In the figure, 10, valve body; 11. positioning a groove; 20. a valve port seal; 21. a support framework; 22. sealing rubber; 31. a ball mount; 310. a limiting guide post; 311. a central through hole; 312. positioning the convex ball; 32. a pilot sphere; 321. a pilot sphere main part; 3211. a limiting boss; 322. a pilot seal ring; 33. a sphere; 331. an outer sealing surface; 332. an inner sealing surface; 34. an elastic connection assembly; 341. a connecting bolt; 342. a spring; 41. a gear drive assembly; 411. a gear case; 412. a drive motor; 413. a driven gear; 42. driving a lead screw; 421. a screw shaft; 43. a drive nut; 431. an outer edge; 432. a screw; 433. connecting the cross bars; 434. a roller; 44. a lift shaft; 441. a transmission sloping plate; 451. a flange cover plate; 452. a supporting seat; 401. a bearing; 402. a clamp spring; 403. a seal ring; 50. a reluctance switch; 101. a flow channel; 201. a linear guide groove; 202. a rotary guide groove; 301. a guide member; 302. a guide fitting.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 7, an orbital ball valve according to an embodiment of the present invention includes a valve body 10 having a flow channel 101, a valve port sealing element 20 disposed on the flow channel 101 of the valve body 10, a ball assembly disposed in the valve port sealing element 20, and a driving mechanism.

The driving mechanism of the present embodiment can drive the ball assembly to engage with the valve port sealing member 20, so as to connect or disconnect the flow passage 101 of the valve body 10.

The valve port seal 20 of the present embodiment includes a support frame 21 and a sealing rubber 22 provided on the support frame 21, and the sealing rubber 22 is molded on the support frame 21 by injection molding. Therefore, the valve port sealing element 20 is convenient to produce and manufacture, and has the function of improving the connection strength between the sealing rubber 22 and the supporting framework 21, so that the sealing rubber 22 is prevented from falling off from the supporting framework 21. In the present embodiment, a plurality of concave-convex engagement portions are provided between the support frame 21 and the sealing rubber 22 to further improve the connection strength between the sealing rubber 22 and the support frame 21.

In the present embodiment, the ball unit of the present embodiment includes a ball holder 31 having a center through hole 311, a pilot ball 32 fixed to the ball holder 31, and a ball 33 provided on the outer periphery of the pilot ball 32.

The sphere 33 of the present embodiment has an outer sealing surface 331 and an inner sealing surface 332, and the outer sealing surface 331 of the sphere 33 can abut against the valve port sealing member 20, so that the sphere 33 is in sealing fit with the valve port sealing member 20; the inner sealing surface 332 of ball 33 can abut against pilot ball 32 to sealingly engage ball 33 with pilot ball 32. That is, when the ball unit of the present embodiment is engaged with the valve port seal 20 to block the flow passage 101 of the valve body 10, specifically, the outer sealing surface 331 of the ball 33 is engaged with the valve port seal 20, and the inner sealing surface 332 of the ball 33 is engaged with the pilot ball 32. Note that, the upper outer seal surface 331 and the inner seal surface 332 of the ball 33 of the present embodiment are formed to match the arc surfaces of the valve port seal 20 and the pilot ball 32, and will not be described here.

The ball 33 and the ball holder 31 of the present embodiment are elastically connected by the elastic connection assembly 34, the ball holder 31 can drive the pilot ball 32 to displace relative to the ball 33, so that a clearance channel is formed between the ball 33 and the pilot ball 32, and the ball holder 31 can act on the ball 33 through the elastic connection assembly 34 to close the clearance channel. That is to say, when the orbital ball valve of the present embodiment works, the ball 33, the ball holder 31 and the pilot ball 32 can relatively displace to form a clearance channel by using the structural characteristics of the elastic connection assembly 34, so as to release the pressure of the medium blocked by the ball assembly, the pressure of the medium acting on the ball 33 after the pressure release is reduced, and then the elastic connection assembly 34 is used to return to drive the ball 33 to return and to be sealed with the pilot ball 32 again in a matching manner.

It can be understood that, when the track ball valve of this embodiment is operated to conduct and switch the flow channel 101 of the valve body 10 partitioned by the ball assembly, the inner sealing surface 332 of the ball 33 abuts against the pilot ball 32, so that the medium acts on the ball 33 and forms a larger acting force, and the amount of the medium entering the gap between the ball 33 and the ball fixing frame 31 and the gap between the ball fixing frame 32 and the pilot ball 32 is smaller, so that the resistance received when the ball fixing frame 31 drives the pilot ball 32 to move relative to the ball 33 is small, thereby facilitating the driving of the ball fixing frame 31 to drive the pilot ball 32 to move relative to the ball 33, and further enabling the track ball valve to be suitable for a pipeline with a large caliber and high pressure medium circulation, replacing a manual valve, achieving the intellectualization of the flow channel control in the pipeline, and meeting the use requirements of the technology of the internet of things.

The elastic connection assembly 34 of the present embodiment includes a connection bolt 341 and a spring 342 sleeved on the connection bolt 341, the connection bolt 341 penetrates through the ball fixing frame 31 and is screwed with the ball 33, and the spring 342 is disposed on the connection bolt 341 in the ball fixing frame 31, so as to achieve elastic connection between the ball 33 and the ball fixing frame 31, and has a simplified structure, which is convenient for assembling the ball 33 to the ball fixing frame 31. In the elastic connection assembly 34 of the present embodiment, the number of the connection bolts 341 is two, each connection bolt 341 is disposed on two opposite sides of the ball 33, and each connection bolt 341 and the ball holder 31 are elastically abutted by the spring 342.

As a preferable aspect of the present invention, the ball 33 of the present embodiment is provided with a guide 301 on one end surface facing the ball holder 31, the ball holder 31 is provided with a guide fitting 302 matching with the guide 301, and the ball 33 is guided and restrained by the ball holder 31 by the fitting between the guide 301 and the guide fitting 302. That is, the present embodiment utilizes the engagement between the guide 301 and the guide engagement piece 302 to guide the relative movement between the ball 33 and the ball holder 31, so as to ensure that the ball 33 can be reset by the driving of the elastic connection assembly 34, so that the ball 33 can be engaged with and sealed with the pilot ball 32 again.

Specifically, the guide 301 of the present embodiment is fixed to the ball 33 for a stopper recess, and the guide recess is provided at a position on the ball 33 for matching the position of the portion of the pilot ball 32; and, the guiding fitting piece 302 is set as a limiting convex part for matching with the limiting concave part on the ball fixing frame 31, so that the ball 33 of the present embodiment can achieve the guiding effect through the concave-convex fit between the limiting concave part and the limiting convex part, and has the effects of simplifying the structure and facilitating the production and preparation of the ball 33 and the ball fixing frame 31. It should be noted that the guide 301 and the guide fitting 302 are not limited to the illustrated structure, and it is obvious to those skilled in the art that the guide 301 may be an extended boss disposed on both sides of the connecting bolt 341, and the guide fitting 302 may be a guide groove matched with the extended boss, which will not be described herein.

In the present embodiment, the pilot ball 32 of the present embodiment includes a pilot ball main part 321 fixedly connected to the ball fixing frame 31, and a pilot sealing ring 322, and the pilot sealing ring 322 is sleeved on the pilot ball main part 321 and is pressed and limited by the pilot ball main part 321; and the inner sealing surface 332 of ball 33 can abut against pilot seal ring 322 to make ball 33 cooperatively seal with pilot ball 32, thereby ensuring the sealing performance when ball 33 is cooperated with pilot ball 32.

The pilot ball main part 321 of the present embodiment is provided with a limiting boss 3211 on an end portion of one side far away from the ball fixing frame 31, and the pilot ball main part 321 can be pressed against the pilot sealing ring 322 through the limiting boss 3211 to press and limit the pilot sealing ring 322 on the ball fixing frame 31. The pilot ball main member 321 and the ball holder 31 are connected to each other by screws, so that the pilot ball 32 is fixed to the ball holder 31.

The ball fixing frame 31 of the present embodiment is fixedly connected with a positioning convex ball 312, the valve body 10 is provided with a positioning groove 11 matched with the positioning convex ball 312, and the ball fixing frame 31 is assembled and limited with the valve body 10 by the matching between the positioning convex ball 312 and the positioning groove 11, so that the ball fixing frame 31 can move relative to the valve body 10 by using the positioning convex ball 312 as a positioning center. The ball fixing frame 31 can utilize the structural characteristics of the positioning convex ball 312, so that when the ball fixing frame 31 moves on the valve body 10, the positioning convex ball 312 is in point contact with the groove wall of the positioning groove 11 on the valve body 10, thereby reducing the friction resistance of the valve body 10 when the ball fixing frame 31 moves.

The drive mechanism of the present embodiment includes a gear drive unit 41, a drive screw 42 connected to the gear drive unit 41, a drive nut 43 screwed to the drive screw 42, a lift shaft 44 fixed to the drive nut 43, and a rail unit. The lift shaft 44 is provided with a transmission inclined plate 441 at one end far away from the drive nut 43, the lift shaft 44 is matched with the ball fixing frame 31 through the transmission inclined plate 441, and the guide rail assembly can be matched with the drive nut 43, so that the drive nut 43 can firstly move axially relative to the drive screw 42 and then rotate relative to the drive screw 42 under the guidance of the guide rail assembly.

As can be seen from the above, the track ball valve of the present embodiment can utilize the screw-thread fit between the driving screw 42 and the driving nut 43 and the guiding limit of the guide rail assembly to the driving nut 43, so that the driving mechanism drives the transmission inclined plate 441 on the lifting shaft 44 to displace the ball fixing frame 31 first through the driving nut 43 when working, and then realizes the rotary driving of the whole ball assembly, thereby meeting the use requirements of the track ball valve; meanwhile, the driving mechanism is simple and reasonable in structure, and has the effects of reducing cost and improving the working stability of the driving mechanism.

The drive nut 43 of the present embodiment is provided with an outer edge 431 at an end portion on the side away from the lift shaft 44, and the lift shaft 44 is fitted over the drive nut 43 and is connected and fixed by a screw 432 penetrating the outer edge 431. That is, the lifting shaft 44 of the present embodiment is sleeved on the driving nut 43 until abutting against the outer edge 431 of the driving nut 43, and then the lifting shaft 44 is fixed in a limited manner by a screw 432 which downwardly penetrates through the outer edge 431 of the driving nut 43, so that the assembly connection between the driving nut 43 and the lifting shaft 44 is realized, and the lifting shaft 44 is conveniently fixed on the driving nut 43.

The ball fixing frame 31 of the present embodiment is provided with the limiting guide posts 310 on two opposite sides of the position of the transmission sloping plate 441, and the outer peripheral surfaces of the two limiting guide posts 310 are respectively attached to the transmission sloping plate 441, so that when the driving nut 43 drives the transmission sloping plate 441 to move along the axial direction of the driving screw 42 through the lifting shaft 44, the transmission sloping plate 441 can drive the ball fixing frame 31 to move through the limiting guide posts 310, so that the ball fixing frame 31 can drive the pilot ball 32 to move relative to the ball 33. That is to say, in the present embodiment, the abutting press fit between the two limit guide pillars 310 and the transmission sloping plate 441 on the ball fixing frame 31 can be utilized, so that the driving nut 43 can drive the lifting shaft 44 to move axially relative to the driving screw 42 under the guidance of the guide rail assembly, thereby realizing the motion driving of the inclination of the ball fixing frame 31 and the pilot ball 32, and on the basis of satisfying the motion driving of the lifting shaft 44 to the ball fixing frame 31 during the operation of the track ball valve, the structure is simplified, thereby facilitating the assembly connection between the transmission sloping plate 441 and the ball fixing frame 31 on the lifting shaft 44.

Further, the position-limiting guide pillar 310 of the present embodiment is disposed on the ball fixing frame 31 in a rotatable manner, so as to reduce the friction resistance when the lift shaft 44 drives the transmission sloping plate 441 to cooperate with the position-limiting guide pillar 310, and further, the transmission sloping plate 441 on the lift shaft 44 drives the ball fixing frame 31 and the pilot ball 32 to move relative to the ball 33 through the position-limiting guide pillar 310.

The guide rail assembly of the present embodiment includes a flange cover 451 fixed to the valve body 10, and a support base 452 provided on the flange cover 451, wherein the flange cover 451 is engaged with the support base 452 and forms a linear guide groove 201 and a rotary guide groove 202; the driving nut 43 is transversely and fixedly connected with a connecting cross rod 433, the connecting cross rod 433 penetrates through the lifting shaft 44, a roller 434 is connected to a part of the connecting cross rod 433 penetrating through the lifting shaft 44, the roller 434 is arranged at the position of the linear guide groove 201 or the rotary guide groove 202 on the guide rail assembly, so that when the driving nut 43 is driven by the driving screw 42 to move, the connecting cross rod 433 on the driving nut 43 is under the guide limit of the linear guide groove 201 and the rotary guide groove 202, the driving nut 43 firstly drives the lifting shaft 44 to move along the axial direction of the driving screw 42, and then under the guide limit of the rotary guide groove 202, the rotary driving of the lifting shaft 44 is realized. The linear guide groove 201 and a part of the rotation guide groove 202 are provided in the flange cover 451, and the other part of the rotation guide groove 202 is provided in the support base 452.

It can be understood that, in the present embodiment, the linear guide groove 201 and the rotary guide groove 202 of the guide rail assembly for limiting the movement of the driving nut 43 are disposed on the flange cover 451 and the support base 452, which has a simplified structure, and specifically, the driving mechanism may be disposed on the support base 452, so as to facilitate the assembly connection between the driving mechanism and the valve body 10.

It should be noted that, the driving screw 42 of the present embodiment is partially configured to be a smooth section, the smooth section of the driving screw 42 is in contact fit with the supporting seat 452 and is rotatably connected to the supporting seat 452 through the bearing 401, and the driving screw 42 is specifically limited and assembled on the supporting seat 452 by the snap spring 402, so as to achieve the assembly connection of the driving screw 42 on the supporting seat 452. A sealing ring 403 is disposed between the contact portions of the driving screw 42 and the supporting seat 452, so as to seal the driving screw 42 and the supporting seat 452.

As a preferred aspect of the present invention, the orbit ball valve of the present embodiment further includes a reluctance switch 50, and the reluctance switch 50 can detect the position of the driving nut 43 and generate a feedback signal. Therefore, when the orbit ball valve works, the ball body assembly feeds back signals for conducting or cutting off control to the flow passage 101 of the valve body 10, and therefore the control of the orbit ball valve is intelligentized. It should be noted that the drive nut 43 of the present embodiment is specifically made of copper so that the magnetic resistance switches 50 detect the position of the drive nut 43, and the number of the magnetic resistance switches 50 is specifically two, and the two magnetic resistance switches 50 are respectively disposed at two limit positions of the drive nut 43.

In addition, the gear driving assembly 41 of the present embodiment specifically includes a gear box 411 provided on the support base 452, a driving motor 412 provided on an input end of the gear box 411, and a driven gear 413 engaged with an output end of the gear box 411, and the driven gear 413 is sleeved on the driving screw 42 and is limited by the screw shaft 421, so that the gear driving assembly 41 of the present embodiment can realize the rotational driving of the driving screw 42 when operating.

As can be seen from the above, when the orbit ball valve of the present embodiment works, the driving motor 412 realizes the rotation driving of the driving lead screw 42 under the speed change adjustment of the gear box 411, the rotating driving lead screw 42 can utilize the thread matching structure between the driving lead screw 42 and the driving nut 43, and the driving nut 43 is limited under the guiding of the linear guide groove 201 and the rotation guide groove 202 on the guide rail assembly, so that the driving nut 43 can drive the lifting shaft 44 to move upwards along the axial direction of the driving lead screw 42, and then drive the lifting shaft 44 to rotate; when the lifting shaft 44 moves linearly, the transmission inclined plate 441 is matched with the limit guide post 310, so that the lifting shaft 44 drives the transmission inclined plate 441 to move linearly, the ball fixing frame 31 and the pilot ball 32 can be driven to move obliquely, the pilot ball 32 is separated from the ball 33 and forms a gap channel with the ball 33, thus a medium blocked by the ball assembly is discharged from the gap channel between the pilot ball 32 and the ball 33 to reduce the acting force of the medium on the ball 33, then the lifting shaft 44 drives the ball fixing frame 31 and the pilot ball 32 to rotate 90 degrees through the transmission inclined plate 441, and the ball 33 is elastically reset under the action of the elastic connecting assembly 34 in the process, so that the central through hole 311 on the ball fixing frame 31 is communicated with the flow channel 101 of the valve body 10, namely, the opening operation of the track ball valve is realized; conversely, the driving motor 412 moves in the reverse direction, and the closing operation of the orbit ball valve is realized.

The features of the above embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above embodiments are not described, but should be construed as being within the scope of the present specification as long as there is no contradiction between the combinations of the features.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that suitable changes and modifications of the above embodiments are within the scope of the claimed invention as long as they are within the spirit and scope of the present invention.

Claims (10)

1. An orbit ball valve comprises a valve body (10) with a flow channel (101), a valve port sealing element (20) arranged on the flow channel (101) of the valve body (10), a ball body assembly matched with the valve port sealing element (20), and a driving mechanism, wherein the driving mechanism can drive the ball body assembly to be matched with the valve port sealing element (20) so as to enable the flow channel (101) of the valve body (10) to be communicated or cut off;

the ball body assembly is characterized by comprising a ball fixing frame (31) with a central through hole (311), a pilot ball body (32) fixedly connected to the ball fixing frame (31), and a ball body (33) arranged on the periphery of the pilot ball body (32), wherein the ball body (33) is provided with an outer sealing surface (331) and an inner sealing surface (332), the outer sealing surface (331) of the ball body (33) can abut against the valve port sealing element (20) to enable the ball body (33) to be in sealing fit with the valve port sealing element (20), and the inner sealing surface (332) of the ball body (33) can abut against the pilot ball body (32) to enable the ball body (33) to be in sealing fit with the pilot ball body (32); the ball body (33) and the ball fixing frame (31) are elastically connected through an elastic connecting assembly (34), the ball fixing frame (31) can drive the pilot ball body (32) to displace relative to the ball body (33), so that a clearance channel is formed between the pilot ball body (32) and the ball body (33), and the ball fixing frame (31) can act on the ball body (33) through the elastic connecting assembly (34) to close the clearance channel.

2. The orbiting ball valve according to claim 1, wherein the elastic connection assembly (34) comprises a connection bolt (341) and a spring (342) sleeved on the connection bolt (341), the connection bolt (341) penetrates the ball holder (31) and is screwed with the ball (33), wherein the spring (342) is disposed on a portion of the connection bolt (341) located in the ball holder (31).

3. An orbital ball valve according to claim 1, characterized in that a guide (301) is provided on the end surface of the ball body (33) on one side facing the ball holder (31), a guiding mating piece (302) matching with the guide (301) is provided on the ball holder (31), and the ball body (33) is guided and retained with the ball holder (31) by the mating between the guide (301) and the guiding mating piece (302).

4. An orbital ball valve according to claim 1, characterized in that the pilot ball (32) comprises a pilot ball main part (321) fixed to the ball holder (31) and a pilot sealing ring (322), the pilot sealing ring (322) is sleeved on the pilot ball main part (321) and is pressed and limited by the pilot ball main part (321), and an inner sealing surface (332) of the ball (33) can abut against the pilot sealing ring (322) to make the ball (33) and the pilot ball (32) cooperatively seal.

5. The orbital ball valve according to claim 4, characterized in that the pilot ball main part (321) is provided with a limit boss (3211) on one side end away from the ball holder (31), and the pilot ball main part (321) can be pressed against the pilot sealing ring (322) through the limit boss (3211) to press and limit the pilot sealing ring (322) on the ball holder (31).

6. The orbit ball valve of claim 1, wherein the ball holder (31) is fixedly connected with a positioning convex ball (312), the valve body (10) is provided with a positioning groove (11) matched with the positioning convex ball (312), and the ball holder (31) is assembled and limited with the valve body (10) through the matching between the positioning convex ball (312) and the positioning groove (11), so that the ball holder (31) can move relative to the valve body (10) by taking the positioning convex ball (312) as a positioning center point.

7. The orbital ball valve according to claim 1, wherein the drive mechanism includes a gear drive assembly (41), a drive screw (42) coupled to the gear drive assembly (41), a drive nut (43) threadably coupled to the drive screw (42), a lift shaft (44) fixedly coupled to the drive nut (43), and a track assembly, the lifting shaft (44) is provided with a transmission inclined plate (441) at one end far away from the driving nut (43), and the lift shaft (44) is engaged with the ball holder (31) through the swash plate (441), the rail assembly is engageable with the driving nut (43), so that the driving nut (43) firstly moves axially relative to the driving screw rod (42) and then rotates relative to the driving screw rod (42) under the guidance of the guide rail assembly.

8. The orbiting ball valve according to claim 7, characterized in that the driving nut (43) is provided with an outer rim (431) on the end of the side away from the lifting shaft (44), and the lifting shaft (44) is sleeved on the driving nut (43) and fixedly connected by a screw (432) penetrating the outer rim (431).

9. The orbiting ball valve according to claim 8, wherein the guide rail assembly comprises a flange cover plate (451) fixedly connected to the valve body (10), and a support seat (452) provided on the flange cover plate (451), the flange cover plate (451) is engaged with the support seat (452) and is formed with a linear guide groove (201) and a rotary guide groove (202); the driving nut (43) is transversely and fixedly connected with a connecting cross rod (433), the connecting cross rod (433) penetrates through the lifting shaft (44), a roller (434) is connected to the part, penetrating through the lifting shaft (44), of the connecting cross rod (433), and the roller (434) is arranged on the guide rail assembly, on the position of the linear guide groove (201) or the rotary guide groove (202).

10. The orbital ball valve according to claim 7, further comprising a reluctance switch (50), the reluctance switch (50) being capable of detecting the position of the drive nut (43) and generating a feedback signal.

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