Track ball valve

Abstract

The track ball valve comprises a valve shell unit, a sealing ball, a lifting shaft, a pilot sleeve and a power assisting sleeve, the valve shell unit is provided with an air inlet and an air outlet, the sealing ball is installed in the valve shell unit and connected with the lifting shaft to control the opening and closing of the air inlet and the air outlet under the driving of the lifting shaft, a pilot hole is formed in the valve shell unit and communicated with the air outlet, the pilot sleeve is installed in the valve shell unit and communicated with the pilot hole, and the power assisting sleeve is installed in the pilot sleeve and connected with the lifting shaft to control the opening and closing of the air inlet and the pilot hole under the driving of the lifting shaft. The track ball valve avoids the pressure relief by the structure of the sealing ball, which not only simplifies the structure, improves the product performance and reduces the cost, but also makes the track ball valve applicable to the low voltage and low power consumption, large diameter and large medium pressure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas valves, in particular to a track ball valve. BACKGROUND

[0002] At present, the existing track ball valve has a complex structure, and the sealing ball body cooperating with the valve port sealing element of the valve body is usually arranged as a movable connection ball body fixing frame and a ball body. When the track ball valve works, the lifting shaft first drives the ball body fixing frame to move relative to the ball body, so that the two are separated to achieve pressure relief function, and then the ball body is driven by the ball body fixing frame to separate from the valve port sealing element, so that the track ball valve is conducted. However, when the lifting shaft first drives the ball body fixing frame to move relative to the ball body, the elastic element between the ball body and the ball body fixing frame needs to be overcome, which requires a large power, so that the track ball valve cannot be applied in the case of low voltage, low power consumption, large diameter and large medium gas pressure. SUMMARY

[0003] Therefore, in view of the above technical problems, it is necessary to provide a track ball valve.

[0004] Specifically, a track ball valve, comprising a valve shell unit, a sealing ball body and a lifting shaft, the valve shell unit has an inlet and an outlet, the sealing ball body is installed in the valve shell unit and connected with the lifting shaft to control the opening / closure of the inlet and the outlet under the driving of the lifting shaft.

[0005] The track ball valve further comprises a pilot sleeve and a booster sleeve, the valve shell unit is provided with a pilot hole, the pilot hole is communicated with the outlet; the pilot sleeve is installed in the valve shell unit and communicated with the pilot hole; the booster sleeve is installed in the pilot sleeve and connected with the lifting shaft to control the opening / closure of the inlet and the pilot hole under the driving of the lifting shaft.

[0006] In the present application, through the structure of the pilot sleeve and the booster sleeve, when the track ball valve works, the lifting shaft can drive the movement of the booster sleeve and achieve the function of pressure relief, so as to facilitate the subsequent driving of the sealing ball body movement, which can avoid using the structure of the sealing ball body itself to relieve pressure, not only simplifying the structure, improving the product performance and reducing the cost, but also making the track ball valve applicable in the case of low voltage, low power consumption, large diameter and large medium gas pressure.

[0007] In one embodiment, the valve shell unit comprises a valve body and a valve cover, the valve cover is detachably installed on the valve body.

[0008] The valve body is provided with a first pilot hole, and the valve cover is provided with a second pilot hole matched with the first pilot hole.

[0009] It can be understood that the valve housing unit and the pilot hole are arranged by the structure of the valve body and the valve cover, so that the pilot hole is in communication with the pilot hole.

[0010] In one embodiment, a third sealing ring is arranged between the valve body and the valve cover, and the third sealing ring is arranged at the peripheral position of the communication port connected between the first pilot hole and the second pilot hole.

[0011] It can be understood that the third sealing ring is arranged to seal the assembly between the first pilot hole of the valve body and the second pilot hole of the valve cover, thereby preventing leakage.

[0012] In one embodiment, the pilot sleeve is mounted on the valve cover, and a sleeve portion is formed at one end of the pilot sleeve away from the valve cover, and the booster sleeve is slidingly mounted on the sleeve portion.

[0013] The inner peripheral wall of the sleeve portion is provided with a pilot groove, and the air inlet can be in communication with the second pilot hole through the pilot groove.

[0014] It can be understood that the sleeve portion and the pilot groove are arranged to cooperate between the booster sleeve and the pilot sleeve, and the booster sleeve selectively seals the pilot groove to control the pressure relief of the track ball valve during operation.

[0015] In one embodiment, a first sealing ring is arranged on the booster sleeve, and the booster sleeve can be in abutting sealing with the inner peripheral wall of the sleeve portion through the first sealing ring.

[0016] It can be understood that the first sealing ring is arranged to seal the assembly between the booster sleeve and the sleeve portion of the pilot sleeve.

[0017] In one embodiment, the number of pilot grooves is multiple, and the multiple pilot grooves are arranged on the inner peripheral wall of the sleeve portion.

[0018] It can be understood that the number of pilot grooves is set to multiple, thereby increasing the gas flow during pressure relief of the track ball valve, so that the pressure at the air inlet can be quickly reduced during pressure relief of the track ball valve.

[0019] In one of the embodiments, a fixing piece is detachably mounted on the lifting shaft, and the assisting sleeve is sleeved on the lifting shaft and locked by the fixing piece.

[0020] It can be understood that the assisting sleeve is assembled on the lifting shaft through the structure of the fixing piece, so as to install the assisting sleeve on the lifting shaft and meet the use requirement of driving the assisting sleeve to move when the lifting shaft works.

[0021] In one of the embodiments, a second sealing ring is sleeved on the lifting shaft, and the assisting sleeve can be sealed by abutting against the lifting shaft through the second sealing ring.

[0022] It can be understood that the assembling and sealing between the assisting sleeve and the lifting shaft are realized through the structure of the second sealing ring.

[0023] In one of the embodiments, a transmission inclined plate is mounted on the lifting shaft, two transmission shafts are arranged on the sealing ball in an interval, and the lifting shaft can drive the sealing ball to move relative to the valve housing unit through the cooperation between the transmission inclined plate and the two transmission shafts.

[0024] The lifting shaft includes a transition straight plate, the transmission inclined plate is mounted on the lifting shaft through the transition straight plate, and the transition straight plate is in clearance fit with the two transmission shafts while the lifting shaft drives the assisting sleeve to move relative to the pilot sleeve.

[0025] It can be understood that the transmission inclined plate and the transition straight plate meet the use requirement of driving the sealing ball to move after the pilot sleeve is driven to move and pressure is released when the lifting shaft works.

[0026] In one of the embodiments, the sealing ball includes a ball fixing frame, a ball and a fixing screw, the ball is fixedly mounted on the ball fixing frame through the fixing screw.

[0027] The ball can cooperate with the valve housing unit to control the opening and closing of the inlet and the pilot hole.

[0028] It can be understood that the ball fixing frame, the ball and the fixing screw realize the structure of the sealing ball, which has the effect of simplifying the structure.

[0029] In one of the embodiments, the track ball valve further includes a support seat, a rotation guide groove is arranged on the support seat.

[0030] The lifting shaft passes through the support base and is equipped with a guide pin that matches the rotary guide groove. The lifting shaft is guided to move relative to the valve housing unit by the cooperation between the guide pin and the rotary guide groove.

[0031] It is understandable that, through the above-mentioned support structure, the movement trajectory of the lifting shaft is guided by the cooperation between the guide pin on the lifting shaft and the rotary guide groove on the support, so as to meet the working requirements of the track ball valve.

[0032] In one embodiment, the track ball valve further includes a motor, a gearbox, a driven gear, a lead screw shaft, and a lead screw nut;

[0033] The lead screw nut is fixedly mounted on the lifting shaft and threadedly connected to the lead screw shaft; the lead screw shaft is rotatably mounted on the support base via the driven gear, and is connected to the motor via the reduction gearbox, so as to control the lifting shaft to move up and down relative to the support base under the drive of the motor.

[0034] It is understandable that the above-mentioned structure of motor, gearbox, driven gear, lead screw shaft and lead screw nut is used to specifically drive the lifting shaft to rise and fall when the track ball valve is working. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of a ball valve provided in one embodiment of this application;

[0037] Figure 2 for Figure 1 Enlarged view of part P in the image;

[0038] Figure 3 This is a cross-sectional view of a ball valve provided in an embodiment of this application;

[0039] Figure 4 for Figure 3 Enlarged view of the Q part in the image;

[0040] Figure 5 for Figure 3 Enlarged view of the R part in the image;

[0041] Figure 6A schematic diagram of the pilot sleeve in the present application.

[0042] Reference signs: 100, track ball valve; 10, valve housing unit; 11, valve body; 12, valve cover; 110, air inlet; 120, air outlet; 130, pilot hole; 131, first pilot hole; 132, second pilot hole; 133, communication port; 20, sealing ball body; 21, ball body fixing frame; 22, ball body; 221, fixing screw; 23, transmission shaft; 30, lifting shaft; 301, fixing plate; 302, blocking table; 31, transmission inclined plate; 32, transition straight plate; 33, guide pin; 40, pilot sleeve; 41, sleeve part; 411, inner peripheral wall; 42, pilot groove; 50, booster sleeve; 60, support seat; 61, rotary guide groove; 71, motor; 72, speed reducer box; 73, driving gear; 74, driven gear; 75, lead screw shaft; 76, lead screw nut; 101, first sealing ring; 102, second sealing ring; 103, third sealing ring; 104, induction switch. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0045] As shown in Figure 1 , Figure 3 The track ball valve 100 provided by an embodiment of the present application includes a valve housing unit 10, a sealing ball body 20, a lifting shaft 30, a pilot sleeve 40 and a booster sleeve 50.

[0046] The valve housing unit 10 of the present application has an air inlet 110 and an air outlet 120. The sealing ball body 20 is installed in the valve housing unit 10 and connected with the lifting shaft 30, so as to control the on / off between the air inlet 110 and the air outlet 120 under the driving of the lifting shaft 30. That is, the track ball valve 100 of the present application can realize the conduction or closing of the gas in the track ball valve 100 by controlling the movement of the sealing ball body 20 by the lifting shaft 30. In this way, the control of the gas flow when the track ball valve 100 works is specifically realized.

[0047] In the present application, a pilot hole 130 is formed on the valve housing unit 10, the pilot hole 130 is in communication with the gas outlet 120; a pilot sleeve 40 is installed in the valve housing unit 10 and in communication with the pilot hole 130; a booster sleeve 50 is installed in the pilot sleeve 40 and connected with the lifting shaft 30, so as to control the opening / closing of the pilot hole 130 and the inlet 110 under the driving of the lifting shaft 30. When the track ball valve 100 works, the lifting shaft 30 can drive the movement of the booster sleeve 50, and achieve the function of pressure relief, so as to facilitate the subsequent driving of the sealing ball 20.

[0048] As shown in Figure 1 The valve housing unit 10 of the present application includes a valve body 11 and a valve cover 12, the valve cover 12 is detachably installed on the valve body 11; wherein the valve body 11 is provided with a first pilot hole 131, the valve cover 12 is provided with a second pilot hole 132 matched with the first pilot hole 131, the first pilot hole 131 and the second pilot hole 132 cooperate and form the pilot hole 130, so as to realize the structure of the valve housing unit 10 and the pilot hole 130. It should be noted that the pilot hole 130 is not limited to the combination of the first pilot hole 131 and the second pilot hole 132 shown in the figure, for those skilled in the art, the pilot hole 130 can be formed only on the valve body 11, which will not be described here.

[0049] As shown in Figure 5 The valve body 11 and the valve cover 12 of the present application are provided with a third sealing ring 103, the third sealing ring 103 is arranged at the peripheral position of the communication port 133 connected between the first pilot hole 131 and the second pilot hole 132, so as to seal the assembly between the first pilot hole 131 on the valve body 11 and the second pilot hole 132 on the valve cover 12, and prevent leakage.

[0050] As shown in Figure 1 The sealing ball 20 of the present application includes a ball body fixing frame 21, a ball body 22 and a fixing screw 221, the ball body 22 is fixedly installed on the ball body fixing frame 21 through the fixing screw 221, so as to realize the structure of the sealing ball 20, the sealing ball 20 is arranged as a whole structure, and the sealing ball 20 itself does not have the function of pressure relief, which simplifies the structure of the sealing ball 20.

[0051] The sealing ball 20 of the present application can be connected to the lifting shaft 30 through the ball body fixing frame 21, and the sealing ball 20 specifically abuts and seals the valve body 11 on the valve housing unit 10 with the ball body 22.

[0052] As shown in Figure 4As shown, the lifting shaft 30 of the present application is provided with a transmission inclined plate 31, and two transmission shafts 23 are arranged on the sealing ball 20 at intervals. The lifting shaft 30 can be used for the sealing ball 20 through the cooperation between the transmission inclined plate 31 and the two transmission shafts 23, so as to drive the sealing ball 20 to move relative to the valve body 11. It should be noted that the cooperation between the transmission inclined plate 31 on the lifting shaft 30 and the two transmission shafts 23 on the sealing ball 20, and how the lifting shaft 30 drives the sealing ball 20 to move through the cooperation between the transmission inclined plate 31 and the two transmission shafts 23 are all conventional technologies in the existing track ball valve, which will not be described here.

[0053] The lifting shaft 30 of the present application further comprises a transition straight plate 32, and the transmission inclined plate 31 is installed on the lifting shaft 30 through the transition straight plate 32. When the lifting shaft 30 drives the power assisting sleeve 50 to move relative to the pilot sleeve 40, the transition straight plate 32 is in clearance fit with the two transmission shafts 23. That is to say, during the process that the lifting shaft 30 drives the power assisting sleeve 50 to move relative to the pilot sleeve 40, there is no power transmission between the transition straight plate 32 and the two transmission shafts 23, so as to meet the use requirement that the power assisting sleeve 50 is first driven to move and then the sealing ball 20 is driven to move.

[0054] As shown in Figure 3 , Figure 6 The pilot sleeve 40 of the present application is installed on the valve cover 12, and can be fixedly installed on the valve cover 12 by screws (not shown in the figure). The pilot sleeve 40 is formed with a sleeve portion 41 at an end away from the valve cover 12, and the power assisting sleeve 50 is slidingly installed on the sleeve portion 41. The inner peripheral wall 411 of the sleeve portion 41 is provided with a pilot groove 42, and the air inlet 110 can be in communication with the second pilot hole 132 through the pilot groove 42, so as to specifically realize the cooperation between the power assisting sleeve 50 and the pilot sleeve 40, and selectively realize the plugging of the pilot groove 42 by the power assisting sleeve 50, so as to control the pressure relief of the track ball valve during operation.

[0055] The power assisting sleeve 50 is sleeved with a first sealing ring 101, and the power assisting sleeve 50 can be in abutting sealing with the inner peripheral wall 411 of the sleeve portion 41 through the first sealing ring 101, so as to specifically realize the assembly sealing between the power assisting sleeve 50 and the sleeve portion 41 of the pilot sleeve 40.

[0056] Specifically, when the first sealing ring 101 on the booster sleeve 50 abuts against the inner circumferential wall 411 of the sleeve portion 41, the first sealing ring 101 is deformed by the extrusion of the booster sleeve 50 and the inner circumferential wall 411, and the assembly seal between the booster sleeve 50 and the sleeve portion 41 is achieved; when the booster sleeve 50 is driven by the lifting shaft 30 to move the first sealing ring 101 to the position of the pilot groove 42 of the sleeve portion 41, the air inlet 110 can be communicated with the second pilot hole 132 on the valve cover 12 through the pilot groove 42 and the inner cavity of the pilot sleeve 40.

[0057] The number of the pilot grooves 42 of the present application is multiple, and the multiple pilot grooves 42 are arranged at intervals on the inner circumferential wall 411 of the sleeve portion 41, so as to increase the air flow when the track ball valve 100 is depressurized, so that the pressure at the air inlet 110 can be quickly reduced when the track ball valve 100 is depressurized. It should be noted that the multiple pilot grooves 42 of the present application are arranged at the same height of the sleeve portion 41, so that the multiple pilot grooves 42 can simultaneously communicate the medium gas. Specifically, the number of the pilot grooves 42 is set to four, and the four pilot grooves 42 are arranged in a ring array on the inner circumferential wall 411 of the sleeve portion 41.

[0058] As shown in Figure 4 The lifting shaft 30 of the present application is detachably provided with a fixing sheet 301, which can be set as a clamping spring sheet. The booster sleeve 50 is sleeved on the lifting shaft 30 and locked by the fixing sheet 301, so as to specifically realize the assembly connection of the booster sleeve 50 on the lifting shaft 30, so as to install the booster sleeve 50 on the lifting shaft 30 and meet the use requirement that the booster sleeve 50 is driven to move by the lifting shaft 30 during the operation of the lifting shaft 30. It should be noted that the lifting shaft 30 of the present application is further provided with a stop table 302 on the opposite side of the fixing sheet 301, so as to upwardly limit the booster sleeve 50 sleeved on the lifting shaft 30 by the stop table 302.

[0059] The second sealing ring 102 is sleeved on the lifting shaft 30, and the booster sleeve 50 can be sealed by the second sealing ring 102 and the lifting shaft 30, so as to seal the assembly of the booster sleeve 50 on the lifting shaft 30.

[0060] In addition, the track ball valve of the present application further comprises a support seat 60, a rotating guide groove 61 is formed on the support seat 60; wherein a guide pin 33 matched with the rotating guide groove 61 is installed on the lifting shaft 30, and the lifting shaft 30 is guided to move relative to the valve cover 12 by the cooperation between the guide pin 33 and the rotating guide groove 61, so that the lifting shaft 30 moves within the track of the rotating guide groove 61 during the operation of the track ball valve 100, which can meet the use requirements of the operation of the track ball valve 100. It should be noted that the support seat 60 of the present application is fixedly installed on the valve cover 12 by screws (not shown in the figure).

[0061] As shown in Figure 2 , Figure 3 , the track ball valve 100 of the present application further comprises a motor 71, a reduction box 72, a driving gear 73, a driven gear 74, a lead screw shaft 75 and a lead screw nut 76, wherein the lead screw nut 76 is fixedly installed on the lifting shaft 30 and connected with the lead screw shaft 75 in a threaded manner, the lead screw shaft 75 is circumferentially limited by the driven gear 74, so that during the operation of the track ball valve 100, the motor 71 drives the driving gear 73 to rotate through the reduction box 72, and the driving gear 73 and the driven gear 74 are meshed to drive the rotation of the lead screw shaft 75, and the threaded structure between the lead screw shaft 75 and the lead screw nut 76 can realize the movement of the lifting shaft 30 relative to the valve cover 12, and in this process, the cooperation between the guide pin 33 on the lifting shaft 30 and the rotating guide groove 61 on the support seat 60 can guide and constrain the movement of the lifting shaft 30, so as to meet the use requirement that the lifting shaft 30 can drive the sealing ball 20 to move relative to the valve body 11 during the operation of the track ball valve.

[0062] As shown in Figure 1 , the track ball valve of the present application further comprises an inductive switch 104, and the guide pin 33 driven by the lifting shaft 30 moves along the rotating guide groove 61 and cooperates with the inductive switch 104 to generate a feedback signal, so as to feedback the position of the lifting shaft 30 during movement, so as to meet the use requirement of controlling the flow of medium gas during the operation of the track ball valve. It should be noted that the number of inductive switches 104 of the present application can be set to multiple according to the use requirement, wherein the inductive switch 104 of the present application is set to a micro switch, and the feedback signal is fed back by the collision between the guide pin 33 on the lifting shaft 30 and the micro switch. Of course, the inductive switch 104 is not limited to a micro switch, and for those skilled in the art, the inductive switch 104 can be set to a proximity switch, etc., which will not be described here.

[0063] When the track ball valve is opened, the upward movement of the lifting shaft 30 can drive the booster sleeve 50 to be separated from the sealing of the pilot groove 42 of the pilot sleeve 40, so that the medium gas at the position of the air inlet 110 can flow to the air outlet 120 through the pilot groove 42, the second pilot hole 132 and the first pilot hole 131, so as to achieve the function of pressure relief, so that the position of the air inlet 110 on the valve body 11 can be rapidly lowered, and in this process, the transition straight plate 32 on the lifting shaft 30 moves between the two transmission shafts 23 on the sealing ball 20, and does not transmit power to the sealing ball 20; when the lifting shaft 30 moves to a certain distance, the transmission inclined plate 31 on the lifting shaft 30 cooperates with the two transmission shafts 23 on the sealing ball 20, and drives the sealing ball 20, and by using the structural characteristics of the transmission inclined plate 31, the sealing ball 20 can be tilted relative to the valve body 11, and after being tilted by a certain angle, the lifting shaft 30 starts to rotate under the action of the rotating guide groove 61 on the support seat 60, so that the sealing ball 20 rotates by 90°, and the air inlet 110 and the air outlet 120 on the valve body 11 are completely connected; conversely, the track ball valve is closed.

[0064] In summary, the track ball valve of the present application can achieve the function of pressure relief by reasonably arranging the cooperation between the booster sleeve 50 and the pilot sleeve 40, so as to facilitate the subsequent driving of the sealing ball 20, and avoid using the structure of the sealing ball 20 for pressure relief, so as to not only simplify the structure, improve the product performance and reduce the cost, but also make the track ball valve suitable for application in low-voltage low-power, large-diameter and high-medium gas pressure conditions.

[0065] The technical features of the above embodiments can be combined in any way, and in order to make the description concise, all possible combinations of the technical features in the above embodiments are not described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0066] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present application, and are not used as a limitation of the present application, and as long as the above embodiments are appropriately changed and varied within the scope of the spirit of the present application, they fall within the scope of the present application.

Claims

1. A track ball valve, comprising a valve housing unit (10), a sealing ball (20) and a lifting shaft (30), the valve housing unit (10) having an inlet port (110) and an outlet port (120), the sealing ball (20) being installed in the valve housing unit (10) and connected with the lifting shaft (30) to control the opening / closing between the inlet port (110) and the outlet port (120) under the driving of the lifting shaft (30). characterized in that The track ball valve (100) further comprises a pilot sleeve (40) and a booster sleeve (50), the valve housing unit (10) being provided with a pilot hole (130) in communication with the outlet port (120), the pilot sleeve (40) being installed in the valve housing unit (10) and in communication with the pilot hole (130), and the booster sleeve (50) being installed in the pilot sleeve (40) and connected with the lifting shaft (30) to control the opening / closing between the inlet port (110) and the pilot hole (130) under the driving of the lifting shaft (30). The valve housing unit (10) comprises a valve body (11) and a valve cover (12), the valve cover (12) being detachably installed on the valve body (11), wherein the valve body (11) is provided with a first pilot hole (131), the valve cover (12) is provided with a second pilot hole (132) matched with the first pilot hole (131), and the first pilot hole (131) and the second pilot hole (132) cooperate and jointly form the pilot hole (130). The pilot sleeve (40) is installed on the valve cover (12), and the pilot sleeve (40) is formed with a sleeve portion (41) at an end away from the valve cover (12), and the booster sleeve (50) is slidingly installed on the sleeve portion (41), wherein the inner peripheral wall (411) of the sleeve portion (41) is provided with a plurality of pilot grooves (42) arranged at intervals, and the inlet port (110) can communicate with the second pilot hole (132) through the plurality of pilot grooves (42). The booster sleeve (50) is sleeved with a first sealing ring (101), and the booster sleeve (50) can be sealed against the inner peripheral wall (411) of the sleeve portion (41) through the first sealing ring (101).

2. The orbital ball valve of claim 1, wherein, The lifting shaft (30) is detachably installed with a fixing plate (301), the booster sleeve (50) is sleeved on the lifting shaft (30) and locked through the fixing plate (301).

3. The orbital ball valve of claim 2, wherein, The lifting shaft (30) is sleeved with a second sealing ring (102), and the booster sleeve (50) can be sealed against the lifting shaft (30) through the second sealing ring (102).

4. The orbital ball valve of claim 1, wherein, The transmission inclined plate (31) is installed on the lifting shaft (30), two transmission shafts (23) are arranged on the sealing ball (20) at intervals, and the lifting shaft (30) is used for driving the sealing ball (20) to move relative to the valve housing unit (10) through cooperation between the transmission inclined plate (31) and the two transmission shafts (23). The transmission inclined plate (31) is installed on the lifting shaft (30) through the transition straight plate (32), and the transition straight plate (32) is in clearance fit with the two transmission shafts (23) while the lifting shaft (30) drives the power assisting sleeve (50) to move relative to the pilot sleeve (40).

5. The orbital ball valve of claim 1, wherein, The sealing ball (20) comprises a ball fixing frame (21), a ball (22) and a fixing screw (221), the ball (22) is fixedly installed on the ball fixing frame (21) through the fixing screw (221). The ball (22) is used for cooperating with the valve housing unit (10) to control the on / off of the air inlet (110) and the pilot hole (130).

6. The orbital ball valve of claim 1, wherein, The track ball valve (100) further comprises a support seat (60), and the support seat (60) is provided with a rotating guide groove (61); The lifting shaft (30) penetrates through the support seat (60), wherein the lifting shaft (30) is provided with a guide pin (33) matched with the rotating guide groove (61), and the lifting shaft (30) is guided to move relative to the valve housing unit (10) through cooperation between the guide pin (33) and the rotating guide groove (61).

7. The orbital ball valve of claim 6, wherein, The track ball valve (100) further comprises a motor (71), a speed reducer (72), a driven gear (74), a lead screw shaft (75) and a lead screw nut (76). The lead screw nut (76) is fixedly installed on the lifting shaft (30) and is in threaded connection with the lead screw shaft (75), the lead screw shaft (75) is rotatably installed on the support seat (60) through the driven gear (74), and the motor (71) is in transmission connection with the lead screw shaft (75) through the speed reducer (72), so that the lifting shaft (30) is controlled to move up and down relative to the support seat (60) under the driving of the motor (71).

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