Friction-reducing orbital ball valve with auxiliary closing function and its method

Abstract

The present invention discloses a friction-reducing track ball valve with an auxiliary closing function and a method thereof, relating to the technical field of valve equipment. The friction-reducing track ball valve includes a functional module located in the inner cavity of the valve body of the track ball valve and connected to the bottom of the ball. The functional module includes an auxiliary closing module and a friction-reducing module; the auxiliary closing module includes an upper energy storage shell, a lower energy storage shell, an upper energy storage spring, a lower energy storage spring, an upper energy storage plate, a lower energy storage plate, an energy storage shaft, and an energy storage rod; the friction-reducing module includes a linear slide rail, a linear slider, a bushing, and a tapered roller bearing. The present invention stores energy for the auxiliary closing module through the rotation of the handwheel when the valve is opened and releases the energy when the valve is closed to reduce the handwheel operation torque during closing to achieve the auxiliary closing function. In addition, the friction-reducing module reduces the frictional resistance when the ball rotates and moves horizontally, and keeps the same center height as the valve stem, prolongs the service life, and ensures tight sealing.

Description

Technical Field

[0001] The present invention belongs to the field of valve devices, and particularly relates to a friction-reducing track ball valve with an auxiliary closing function and a method thereof. Background Art

[0002] The track ball valve controls the rotation and movement of the ball through the track on the valve stem and the guide pin, and realizes sealing through the mechanical extrusion of the wedge surface at the lower end of the valve stem, achieving the functions of regulating and blocking the medium. However, in the working condition of particulate medium, particle accumulation is likely to occur at the trunnion under the ball of the traditional track ball valve, and the fluid medium cannot be flushed to, making it difficult to clean. This not only increases the frictional resistance during the opening and closing process, but also asymmetrically raises the ball to change its center height, affecting the sealing effect and causing leakage. Moreover, the torque required for closing the track ball valve is greater than that for opening. Therefore, how to balance the torque during the opening and closing of the track ball valve, reduce the frictional resistance, and avoid impurity accumulation are the problems that need to be solved currently. Summary of the Invention

[0003] The purpose of the present invention is to overcome the defects in the prior art and provide a friction-reducing track ball valve with an auxiliary closing function and a method thereof. The present invention converts a part of the work done by the handwheel during valve opening into the elastic potential energy of the upper and lower energy storage springs through the coaxial rotation of the ball cross bar and the energy storage shaft. When the valve is closed, the upper and lower energy storage springs release the elastic potential energy to transmit torque to the valve stem, assisting the valve to close and balancing the operating torque during valve opening and closing. In addition, the friction-reducing module reduces the frictional resistance when the ball rotates and moves, avoids impurity accumulation, keeps the center height of the ball and the valve stem consistent, extends the service life, and ensures tight sealing.

[0004] The specific technical solutions adopted by the present invention are as follows:

[0005] In a first aspect, the present invention provides a friction-reducing track ball valve with an auxiliary closing function, including a function module located in the inner cavity of the valve body of the track ball valve and connected to the bottom of the ball; the function module includes an energy storage shaft, a tapered roller bearing, a shaft sleeve, an upper energy storage shell, a lower energy storage shell, an upper energy storage spring, a lower energy storage spring, a linear slider, and a linear slide rail;

[0006] The energy storage shaft is vertically arranged, and its top is key-connected to the bottom of the sphere. A tapered roller bearing is fitted around the upper outer periphery, and the outer periphery of the tapered roller bearing is limited and installed through a shaft sleeve. A non-rotating upper energy storage shell and a lower energy storage shell are also sleeved around the lower outer periphery of the energy storage shaft. The bottom of the upper energy storage shell is provided with a first annular groove, and the upper part of the lower energy storage shell is provided with a second annular groove. The first annular groove and the second annular groove communicate with each other to form a cylindrical chamber together. An upper energy storage spring is arranged circumferentially in the first annular groove, and a lower energy storage spring is arranged circumferentially in the second annular groove. An energy storage rod connected to the energy storage shaft is arranged in the cylindrical chamber. One end of the upper energy storage spring is fixedly connected to the energy storage rod, and the other end is fixedly connected to an upper energy storage plate arranged inside the upper energy storage shell. One end of the lower energy storage spring is fixedly connected to the energy storage rod, and the other end is connected to a lower energy storage plate arranged inside the lower energy storage shell. The upper energy storage spring and the lower energy storage spring can be compressed to store energy when the orbital ball valve is opened and release energy to provide power when it is closed. A linear slide rail is fixed at the bottom of the valve inner cavity, and the axial direction of the linear slide rail is along the fluid flow direction. A linear slider is fixedly connected to the bottom of the energy storage shaft, and the linear slider can move along the linear slide rail.

[0007] Preferably, a cross-bar structure protruding downward is provided at the bottom of the sphere, and a cross-slot through-hole is axially opened inside the energy storage shaft. The key connection between the energy storage shaft and the sphere is realized by inserting the cross-bar into the cross-slot.

[0008] Preferably, the sphere, the energy storage shaft, the tapered roller bearing, the shaft sleeve, the upper energy storage shell, the lower energy storage shell, the upper energy storage spring, the lower energy storage spring and the linear slider are all coaxially arranged.

[0009] Preferably, the tops of the tapered roller bearing, the energy storage shaft and the shaft sleeve are flush. A dust-proof ring is provided at the top of the tapered roller bearing. A transition fit is adopted between the tapered roller bearing and the shaft sleeve, and a transition fit is adopted between the energy storage shaft and the tapered roller bearing.

[0010] Further, the dust-proof ring is made of rubber.

[0011] Preferably, a key connection is provided between the bottom of the shaft sleeve and the top of the upper energy storage shell, a key connection is provided between the upper energy storage shell and the lower energy storage shell, and the bottom of the lower energy storage shell is flush with the bottom of the energy storage shaft.

[0012] Preferably, a plurality of vertical first fitting shafts are circumferentially spaced on the top of the upper energy storage shell, and a plurality of columnar first fitting grooves are circumferentially spaced at the bottom of the shaft sleeve. The fixed connection between the upper energy storage shell and the shaft sleeve is realized by inserting the first fitting shafts into the first fitting grooves in sequence.

[0013] Preferably, a plurality of vertical second fitting shafts are circumferentially spaced at the bottom of the upper energy storage shell, and a plurality of vertical second fitting grooves are circumferentially spaced at the top of the lower energy storage shell. The upper energy storage shell and the lower energy storage shell are fixedly connected by sequentially inserting the second fitting shafts into the second fitting grooves.

[0014] Preferably, the upper energy storage spring and the lower energy storage spring are arranged on the same side in the cylindrical chamber.

[0015] In a second aspect, the present invention provides a method for using any one of the friction-reducing track ball valves with an auxiliary closing function in the first aspect, specifically as follows:

[0016] When the track ball valve is opened under normal conditions, the valve stem drives the ball to rotate by rotating the handwheel. The ball transmits the torque to the energy storage shaft through the key connection relationship. The energy storage shaft drives the energy storage rod to rotate around the axis together and compress the upper energy storage spring and the lower energy storage spring; the upper energy storage spring and the lower energy storage spring deform, increasing the elastic potential energy of the springs, realizing the energy storage process; when the track ball valve is closed, the handwheel is rotated in the reverse direction to drive the ball to rotate by the valve stem. At this time, the upper energy storage spring and the lower energy storage spring compressed by the energy storage rod gradually return to their original lengths, and at the same time, the stored elastic potential energy is converted into torque through the energy storage rod and transmitted to the energy storage shaft, and then further transmitted to the ball through the key connection to assist the rotation of the ball, reducing the torque required to be applied by the handwheel to operate the valve stem and assisting the closing of the track ball valve;

[0017] In this process, through the anti-rotation friction reduction structure composed of the shaft sleeve and the tapered roller bearing, the friction resistance suffered by the ball during rotation is reduced; when the ball approaches the valve seat sealing surface for sealing, the ball will move in the horizontal direction. Through the anti-movement friction reduction structure composed of the linear slider and the linear slide rail, the friction resistance suffered by the ball during horizontal movement is reduced; at the same time, by sliding the linear slider on the linear slide rail, the particulate matter falling on the linear slide rail in the medium can be removed, and the medium flow will carry away the particulate matter when the track ball valve is opened, realizing the self-cleaning function, ensuring that the functional module can always reduce the friction resistance in the horizontal direction, avoiding impurity accumulation, ensuring the center height consistency of the ball and the valve stem, and ensuring tight sealing;

[0018] Before use, by adjusting the stiffness coefficient and the number of turns of the upper energy storage spring and the lower energy storage spring, the energy storage capacity and the magnitude of the auxiliary valve stem closing force are adjusted to achieve the balance of the closing torque and the opening torque.

[0019] The present invention has the following beneficial effects compared with the prior art:

[0020] 1) The present invention uses the energy storage device (i.e., the upper energy storage spring and the lower energy storage spring) to reduce the operating torque for closing the valve and balance the operating torque when the valve is opened and closed.

[0021] 2) The present invention reduces the circumferential friction during the rotation of the sphere through the bushing and the tapered roller bearing, and reduces the horizontal friction when the sphere approaches and departs from the valve seat sealing surface through the linear slider and the linear slide rail.

[0022] 3) The present invention avoids the accumulation of impurities at the bottom of the sphere through the linear slider and the linear slide rail, ensures the stability of the center height of the sphere and the valve stem, and guarantees the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 are the sectional view of the friction-reducing track ball valve and the partial enlarged sectional view of the functional module;

[0024] Figure 2 is the overall structural schematic diagram of the functional module;

[0025] Figure 3 is the sectional structural schematic diagram of the functional module from another perspective;

[0026] Figure 4 is the exploded view of the parts of the functional module;

[0027] Figure 5 is the structural schematic diagram of the linear slider and the linear slide rail;

[0028] Figure 6 is the structural schematic diagram of the upper energy storage shell;

[0029] Figure 7 is the structural schematic diagram of the lower energy storage shell;

[0030] In the figures: 1, valve body; 2, valve stem; 3, pin shaft; 4, valve cover; 5, wedge surface; 6, seal guide seat; 7, packing; 8, packing gland; 9, valve stem track; 10, guide pin; 11, valve seat sealing surface; 12, sphere; 13, handwheel; 14, upper energy storage shell; 15, lower energy storage shell; 16, cross bar; 17, bushing; 18, tapered roller bearing; 19, energy storage shaft; 20, upper energy storage spring; 21, lower energy storage spring; 22, linear slider; 23, linear slide rail; 24, dust ring; 25, energy storage rod; 26, upper energy storage plate; 27, lower energy storage plate; 28, cross groove. DETAILED DESCRIPTION OF THE INVENTION

[0031] The present invention will be further described and explained below in conjunction with the drawings and specific embodiments. The technical features of each embodiment of the present invention can be combined accordingly without conflict.

[0032] As Figure 1 shown, a friction-reducing track ball valve with an auxiliary closing function provided by the present invention is mainly based on the existing structure of the track ball valve and adds a functional module.

[0033] First, in combination with Figure 1 , a brief description of the existing structure of the orbital ball valve will be given. The orbital ball valve mainly includes a valve body 1, a valve stem 2, a pin shaft 3, a valve cover 4, a sealing guide seat 6, a packing 7, a packing gland 8, a guide pin 10, a valve seat sealing surface 11, a ball 12, and a handwheel 13. The upper part of the valve body 1 is connected to the valve cover 4 by bolts; the pin shaft 3 is installed on the upper side of the ball 12; the upper end of the valve stem 2 is connected to the handwheel 13, a valve stem track 9 is opened on the valve stem 2, and the other end of the valve stem 2 has a wedge surface 5, which is clamped with the pin shaft 3; the guide pin 10 is clamped in the valve stem track 9; the sealing guide seat 6 and the packing gland 8 are sleeved outside the valve stem 2; there is a packing 7 between the sealing guide seat 6 and the packing gland 8. In actual application, the packing 7 can be made of elastic materials such as rubber and flexible graphite.

[0034] The functional module of the present invention is located in the inner cavity of the valve body 1 of the orbital ball valve and is connected to the bottom of the ball 12. The functional module is divided into an auxiliary closing module and a friction reduction module, and the friction reduction module can be further divided into a rotational friction reduction module and a translational friction reduction module. Specifically, the auxiliary closing module includes an energy storage shaft 19, an energy storage rod 25, an upper energy storage shell 14, a lower energy storage shell 15, an upper energy storage spring 20, a lower energy storage spring 21, an upper energy storage plate 26, and a lower energy storage plate 27; the friction reduction module includes a bushing 17, a tapered roller bearing 18, a linear slider 22, and a linear slide rail 23.

[0035] Next, the structures and connection methods of the components in the functional module will be specifically described.

[0036] As Figures 2 to 4 shown, the energy storage shaft 19 is vertically arranged, and its top is key-connected to the bottom of the ball 12. In this embodiment, the energy storage shaft 19 is coaxially arranged with the energy storage shaft 19, and a cross-shaped rod 16 structure protruding downward is processed at the bottom of the ball 12. A cross-shaped groove 28 through hole is axially opened inside the energy storage shaft 19. The key connection between the energy storage shaft 19 and the ball 12 is realized by inserting the cross-shaped rod 16 into the cross-shaped groove 28, so that the torque can be transmitted from the rotation of the ball 12 to the energy storage shaft 19. A tapered roller bearing 18 is fitted on the outer periphery of the upper part of the energy storage shaft 19, and the outer periphery of the tapered roller bearing 18 is limited and installed by a bushing 17. In actual use, the bushing 17 is relatively fixed to the valve body 1 and does not rotate with the rotation of the energy storage shaft 19. The upper energy storage shell 14 and the lower energy storage shell 15 are also sleeved on the outer periphery of the lower part of the energy storage shaft 19, and the upper energy storage shell 14 and the lower energy storage shell 15 do not rotate with the energy storage shaft 19.

[0037] In practical applications, the tops of the tapered roller bearing 18, the energy storage shaft 19, and the bushing 17 are flush with each other. A dust-proof ring 24 is provided at the top of the tapered roller bearing 18. An interference fit is adopted between the tapered roller bearing 18 and the bushing 17, and an interference fit is adopted between the energy storage shaft 19 and the tapered roller bearing 18. The dust-proof ring 24 can be made of an elastic material such as rubber. The bottom of the bushing 17 is key-connected to the top of the upper energy storage housing 14, the upper energy storage housing 14 is key-connected to the lower energy storage housing 15, and the bottom of the lower energy storage housing 15 is flush with the bottom of the energy storage shaft 19. Specifically, a plurality of vertical first fitting shafts are circumferentially and spacedly provided at the top of the upper energy storage housing 14, and a plurality of columnar first fitting grooves are circumferentially and spacedly opened at the bottom of the bushing 17. The upper energy storage housing 14 and the bushing 17 are fixedly connected by inserting the first fitting shafts into the first fitting grooves in sequence. A plurality of vertical second fitting shafts are circumferentially and spacedly provided at the bottom of the upper energy storage housing 14, and a plurality of vertical second fitting grooves are circumferentially and spacedly provided at the top of the lower energy storage housing 15. The upper energy storage housing 14 and the lower energy storage housing 15 are fixedly connected by inserting the second fitting shafts into the second fitting grooves in sequence.

[0038] As Figure 6 and 7 shown, a first annular groove is opened at the bottom of the upper energy storage housing 14, and a second annular groove is opened at the upper part of the lower energy storage housing 15. The first annular groove and the second annular groove communicate with each other and jointly form a cylindrical chamber. That is to say, the sizes and opening positions of the first annular groove and the second annular groove are the same. A section of upper energy storage spring 20 is provided along the circumference in the first annular groove, and a section of lower energy storage spring 21 is provided along the circumference in the second annular groove. Both the upper energy storage spring 20 and the lower energy storage spring 21 are arranged in an arc along the outer circumference of the corresponding annular groove. An energy storage rod 25 connected to the energy storage shaft 19 is provided in the cylindrical chamber. That is to say, the energy storage rod 25 is clamped between the upper energy storage housing 14 and the lower energy storage housing 15. An upper energy storage plate 26 is provided inside the upper energy storage housing 14, and a lower energy storage plate 27 is provided inside the lower energy storage housing 15. One end of the upper energy storage spring 20 is fixedly connected to the energy storage rod 25, and the other end is fixedly connected to the upper energy storage plate 26. One end of the lower energy storage spring 21 is fixedly connected to the energy storage rod 25, and the other end is connected to the lower energy storage plate 27. In this embodiment, it is preferably to arrange the upper energy storage spring 20 and the lower energy storage spring 21 on the same side in the cylindrical chamber. That is to say, the upper energy storage plate 26 and the lower energy storage plate 27 are arranged coaxially and on the same side up and down. The upper energy storage spring 20 and the lower energy storage spring 21 can be compressed to store energy when the orbital ball valve is opened and release energy to provide power when it is closed, and they jointly form an auxiliary closing module.

[0039] As Figure 5 shown, a linear slide rail 23 is fixed to the bottom of the inner cavity of the valve body 1, and the axial direction of the linear slide rail 23 is along the fluid flow direction. A linear slider 22 is fixedly connected to the bottom of the lower energy storage housing 14, and the linear slider 22 can move along the linear slide rail 23.

[0040] In this embodiment, preferably, the sphere 12, the energy storage shaft 19, the tapered roller bearing 18, the shaft sleeve 17, the upper energy storage housing 14, the lower energy storage housing 15, the upper energy storage spring 20, the lower energy storage spring 21 and the linear slider 22 are all coaxially arranged. A threaded hole is opened on the lower side inside the valve body 1 and is connected to the linear slide rail 23 by bolts.

[0041] The auxiliary closing method and the friction reduction method of the above friction reduction track ball valve are as follows:

[0042] When the track ball valve is opened under normal conditions, the valve stem 2 drives the sphere 12 to rotate by rotating the handwheel 13. The sphere 12 transmits the torque to the energy storage shaft 19 through the key connection relationship, and the energy storage shaft 19 drives the energy storage rod 25 to rotate around the axis together. Since the upper energy storage housing 14 is stationary relative to the valve, one end of the upper energy storage spring 20 connected to the upper energy storage plate 26 does not move, and the end connected to the energy storage rod 25 is compressed, so the upper energy storage spring 20 as a whole is compressed. Similarly, since the lower energy storage housing 15 is stationary relative to the valve, one end of the lower energy storage spring 21 connected to the lower energy storage plate 27 does not move, and the end connected to the energy storage rod 25 is compressed, so the lower energy storage spring 21 as a whole is compressed. The deformation of the upper energy storage spring 20 and the lower energy storage spring 21 increases the elastic potential energy of the springs, realizing the energy storage process.

[0043] When the track ball valve is closed, the handwheel 13 is rotated in the reverse direction to drive the valve stem 2 to drive the sphere 12 to rotate. At this time, the upper energy storage spring 20 and the lower energy storage spring 21 compressed by the energy storage rod 25 gradually return to their original lengths, and at the same time, the stored elastic potential energy is converted into torque through the energy storage rod 25 and transmitted to the energy storage shaft 19, and then further transmitted to the sphere 12 through the key connection relationship to assist the rotation of the sphere 12, reducing the torque required to operate the valve stem 2 by the handwheel 13 and assisting the closing of the track ball valve.

[0044] In this process, the friction during rotation of the sphere 12 is reduced by the anti-rotation friction reduction structure composed of the shaft sleeve 17 and the tapered roller bearing 18. When the sphere 12 is close to the valve seat sealing surface 11 for sealing, the sphere 12 will move in the horizontal direction. The friction during the horizontal movement of the sphere 12 is reduced by the anti-horizontal movement friction reduction structure composed of the linear slider 22 and the linear slide rail 23. At the same time, by sliding the linear slider 22 on the linear slide rail 23, the particulate matter falling on the linear slide rail 23 in the medium can be removed, and the flowing medium will carry away the particulate matter when the track ball valve is opened, realizing the self-cleaning function, ensuring that the functional module can always reduce the horizontal friction, avoiding impurity accumulation, ensuring the same center height of the sphere 12 and the valve stem 2, and ensuring tight sealing.

[0045] Before use, by adjusting the stiffness coefficient and the number of turns of the upper energy storage spring 20 and the lower energy storage spring 21, the energy storage capacity and the magnitude of the force assisting the closing of the valve stem 2 are adjusted to achieve the balance of the closing torque and the opening torque.

[0046] It can be seen that in the present invention, when the valve is opened, the handwheel rotation stores energy for the auxiliary closing module and releases the energy when the valve is closed, so as to reduce the handwheel operation torque during closing to achieve the auxiliary closing function. In addition, the friction reduction module reduces the frictional resistance suffered when the sphere rotates and moves horizontally, and keeps the same center height as the valve stem, prolongs the service life, and ensures tight sealing.

[0047] The above-described embodiments are only a preferred solution of the present invention, but they are not intended to limit the present invention. Those of ordinary skill in the relevant technical fields can still make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A friction-reducing orbital ball valve with an auxiliary closing function, characterized in that, A functional module located in the inner cavity of the valve body (1) of the orbital ball valve and connected to the bottom of the ball (12); the functional module includes an energy storage shaft (19), a tapered roller bearing (18), a bushing (17), an upper energy storage housing (14), a lower energy storage housing (15), a linear slider (22), and a linear slide rail (23). The energy storage shaft (19) is vertically arranged, its top is key-connected to the bottom of the ball (12), and a tapered roller bearing (18) is fitted on the outer periphery of its upper part. The tapered roller bearing (18) is installed in a limited way through the bushing (17) on its outer periphery; an upper energy storage housing (14) and a lower energy storage housing (15) that do not rotate synchronously with the energy storage shaft (19) are also sleeved on the outer periphery of the lower part of the energy storage shaft (19). A first annular groove is opened at the bottom of the upper energy storage housing (14), and a second annular groove is opened at the upper part of the lower energy storage housing (15). The first annular groove and the second annular groove communicate with each other and jointly form a cylindrical chamber; an upper energy storage spring (20) is arranged along the circumferential direction in the first annular groove, and a lower energy storage spring (21) is arranged along the circumferential direction in the second annular groove; an energy storage rod (25) connected to the energy storage shaft (19) is arranged in the cylindrical chamber; one end of the upper energy storage spring (20) is fixedly connected to the energy storage rod (25), and the other end is fixedly connected to an upper energy storage plate (26) arranged inside the upper energy storage housing (14); one end of the lower energy storage spring (21) is fixedly connected to the energy storage rod (25), and the other end is on a lower energy storage plate (27) arranged inside the lower energy storage housing (15); the upper energy storage spring (20) and the lower energy storage spring (21) can be compressed to store energy when the orbital ball valve is opened and release energy to provide power when it is closed; a linear slide rail (23) is fixed at the bottom of the inner cavity of the valve body (1), and the axial direction of the linear slide rail (23) is along the fluid flow direction; a linear slider (22) is fixedly connected to the bottom of the lower energy storage housing (15), and the linear slider (22) can move along the linear slide rail (23). Through the reduced moving friction structure composed of the linear slider (22) and the linear slide rail (23), the friction force suffered by the ball (12) when moving horizontally is reduced; at the same time, by sliding the linear slider (22) on the linear slide rail (23), the particulate matter falling on the linear slide rail (23) in the medium can be removed. When the orbital ball valve is opened, the flowing medium will carry away the particulate matter, realizing the self-cleaning function, ensuring that the functional module can always reduce the horizontal friction force, and avoiding impurity accumulation, ensuring that the center heights of the ball (12) and the valve stem (2) are consistent, and ensuring tight sealing.

2. The anti-friction track ball valve with an auxiliary closing function according to claim 1, wherein A cross bar (16) structure protruding downward is arranged at the bottom of the ball (12), and a cross slot (28) through hole is axially opened inside the energy storage shaft (19). The key connection between the energy storage shaft (19) and the ball (12) is realized by inserting the cross bar (16) into the cross slot (28).

3. The anti-friction track ball valve with an auxiliary closing function according to claim 1, characterized in that The ball (12), the energy storage shaft (19), the tapered roller bearing (18), the bushing (17), the upper energy storage housing (14), the lower energy storage housing (15), the upper energy storage spring (20), the lower energy storage spring (21), and the linear slider (22) are all coaxially arranged.

4. The anti-friction track ball valve with an auxiliary closing function according to claim 1, characterized in that The tops of the tapered roller bearing (18), the energy storage shaft (19), and the bushing (17) are flush with each other. A dust-proof ring (24) is provided at the top of the tapered roller bearing (18). A transition fit is used between the tapered roller bearing (18) and the bushing (17), and a transition fit is used between the energy storage shaft (19) and the tapered roller bearing (18).

5. The anti-friction track ball valve with an auxiliary closing function according to claim 4, wherein, The dust-proof ring (24) is made of rubber material.

6. The anti-friction track ball valve with an auxiliary closing function according to claim 1, characterized in that The bottom of the bushing (17) is key-connected to the top of the upper energy storage housing (14). The upper energy storage housing (14) is key-connected to the lower energy storage housing (15). The bottom of the lower energy storage housing (15) is flush with the bottom of the energy storage shaft (19).

7. The anti-friction track ball valve with an auxiliary closing function according to claim 1, characterized in that, A number of vertical first fitting shafts are circumferentially spaced on the top of the upper energy storage housing (14). A number of columnar first fitting grooves are circumferentially spaced at the bottom of the bushing (17). The upper energy storage housing (14) and the bushing (17) are fixedly connected by inserting the first fitting shafts into the first fitting grooves in sequence.

8. The anti-friction track ball valve with an auxiliary closing function according to claim 1, characterized in that, A number of vertical second fitting shafts are circumferentially spaced at the bottom of the upper energy storage housing (14). A number of vertical second fitting grooves are circumferentially spaced at the top of the lower energy storage housing (15). The upper energy storage housing (14) and the lower energy storage housing (15) are fixedly connected by inserting the second fitting shafts into the second fitting grooves in sequence.

9. The anti-friction track ball valve with an auxiliary closing function according to claim 1, wherein, The upper energy storage spring (20) and the lower energy storage spring (21) are arranged on the same side in the cylindrical chamber.

10. A method for using the friction-reducing orbital ball valve with an auxiliary closing function according to any one of claims 1 to 9, characterized in that, Specifically as follows: Under normal working conditions, when opening the orbital ball valve, by rotating the handwheel (13), the valve stem (2) drives the ball (12) to rotate. The ball (12) transmits the torque to the energy storage shaft (19) through the key connection relationship. The energy storage shaft (19) drives the energy storage rod (25) to rotate around the axis together and compress the upper energy storage spring (20) and the lower energy storage spring (21). The upper energy storage spring (20) and the lower energy storage spring (21) deform, increasing the elastic potential energy of the springs, realizing the energy storage process. When closing the orbital ball valve, rotate the handwheel (13) in the reverse direction to drive the valve stem (2) to drive the ball (12) to rotate. At this time, the upper energy storage spring (20) and the lower energy storage spring (21) compressed by the energy storage rod (25) gradually return to their original lengths, and at the same time, the stored elastic potential energy is converted into torque through the energy storage rod (25) and transmitted to the energy storage shaft (19), and then further transmitted to the ball (12) through the key connection to assist the rotation of the ball (12), reducing the torque required to operate the valve stem (2) by the handwheel (13) and assisting in closing the orbital ball valve; In this process, the rotation friction resistance structure composed of the bushing (17) and the tapered roller bearing (18) reduces the friction resistance suffered by the sphere (12) during rotation; when the sphere (12) approaches the valve seat sealing surface (11) for sealing, the sphere (12) will move horizontally, and the linear slider (22) and the linear slide rail (23) form a structure to reduce the moving friction resistance, so that the friction resistance suffered by the sphere (12) during horizontal movement is reduced; at the same time, by sliding the linear slider (22) on the linear slide rail (23), the particulate matter falling on the linear slide rail (23) in the medium can be removed, and the flowing medium will carry away the particulate matter when the orbital ball valve is opened, realizing the self-cleaning function, ensuring that the functional module can always reduce the horizontal friction resistance, avoiding impurity accumulation, ensuring that the center heights of the sphere (12) and the valve stem (2) are consistent, and ensuring tight sealing; Before use, by adjusting the stiffness coefficients and the number of turns of the upper energy storage spring (20) and the lower energy storage spring (21), the energy storage capacity and the magnitude of the auxiliary valve stem (2) closing force are adjusted to achieve the balance of the closing torque and the opening torque.

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