A self-adjusting sealing high temperature resistant ball valve

Abstract

The present invention discloses a self-adjusting, sealing, and high-temperature resistant ball valve, whose structure comprises a liquid inlet end, a valve body, a self-adjusting mechanism, a manual lever, and a liquid outlet end. The liquid inlet end and the liquid outlet end are respectively mounted on the left and right ends of the valve body, and a self-adjusting mechanism is mounted on the top of the valve body. In the present invention, when the pressure inside the liquid inlet end exceeds the set value, the extended length of the small electric push rod is controlled according to the size of the detected pressure value, thereby driving the rack to drive the rotation range of the rotating gear. When the pressure value exceeds the set value more, the extended length of the small electric push rod is longer and the rotation range of the meshing rotating gear is larger, so that the driving rod drives the valve stem to drive the valve ball to rotate inside the valve body at a larger angle, and the flow rate of liquid in the valve body is accurately controlled to avoid excessive or insufficient flow rate of liquid in the valve body, thereby being able to quickly and accurately adjust the internal pressure stability of the valve body.

Description

Technical Field

[0001] The present invention relates to the technical field of ball valves, and more specifically, to a self-adjusting, sealing, and high-temperature resistant ball valve. Background Art

[0002] A ball valve is a valve whose opening and closing part (ball) is driven by a valve stem and rotates around the axis of the ball valve. The ball valve can not only flexibly control the confluence, diversion, and flow direction switching of the medium in the pipeline, but also can close any channel to make the other two channels communicate. However, the self-adjusting, sealing, and high-temperature resistant ball valve in the prior art has the following shortcomings: the self-adjusting, sealing, and high-temperature resistant ball valve monitors the hydraulic pressure to control the electromagnet to start the operation of the ball inside the ball valve. During operation, the ball inside the ball valve can only be opened or closed, and the opening angle inside the ball valve cannot be controlled, thereby unable to control the flow rate of liquid inside the ball valve, resulting in poor self-adjustment accuracy. At the same time, during the continuous rotation and opening and closing process of the ball inside the ball valve, a certain amount of wear occurs between the ball and the valve seat, resulting in an increase in the gap between the ball and the valve seat, which not only reduces the stability of the ball's rotation and opening and closing inside the valve body, but also reduces the sealing of the ball inside the valve body, resulting in leakage. Summary of the invention

[0003] The technical solution adopted by the present invention to achieve the technical purpose is: a self-adjusting sealing high-temperature resistant ball valve, whose structure includes a liquid inlet end, a valve body, a self-adjusting mechanism, a manual lever, and a liquid outlet end, wherein the liquid inlet end and the liquid outlet end are respectively installed at the left and right ends of the valve body, and a self-adjusting mechanism is installed on the top of the valve body, and the hydraulic pressure inside the liquid inlet end installed on the valve body is monitored by a hydraulic sensor arranged on the self-adjusting mechanism, and the manual lever is connected to a valve stem arranged on the self-adjusting mechanism, and the valve stem is manually controlled by the manual lever, and the valve stem performs rotational adjustment on a valve ball arranged at the lower end of the self-adjusting mechanism, and the valve ball is installed inside the valve body, and a housing is also provided on the self-adjusting mechanism, and a processing end is installed inside the housing, and the hydraulic data monitored by the hydraulic sensor is processed by the processing end and converted into an electrical signal to control the operation of a driving mechanism arranged on the self-adjusting mechanism;

[0004] The driving mechanism is composed of a small electric push rod, a rack, a guide frame, a rotating gear, a driving rod and a reinforcing rib. The small electric push rod is controlled to run by the processing end, and a rack is welded on the output end of the small electric push rod. The small electric push rod pushes the rack to move inside the guide frame, and the moving rack meshes with the rotating gear to rotate. The driving rod is driven by the reinforcing rib inside the rotating gear to drive the valve stem to rotate inside the support pipe seat set on the self-adjusting mechanism to adjust the angle of the valve ball.

[0005] The hydraulic sensor monitors the hydraulic value inside the liquid inlet end and converts it into an electrical signal through the processing end to control the operation of the small electric push rod. When the pressure inside the liquid inlet end exceeds the set value, the extension length of the small electric push rod is controlled according to the size of the detected pressure value, thereby driving the rack to drive the rotation range of the rotating gear.

[0006] As a further improvement of the present invention, the valve ball includes a sphere, a conduction ring, and a valve seat. The conduction ring is embedded in the surface of the sphere, and the surface of the conduction ring is against the valve seat. The valve seat is installed at the connection between the outside of the sphere and the inside of the valve body, and the gap between the outside of the sphere and the inside of the valve body is sealed through the valve seat.

[0007] As a further improvement of the present invention, a circulation groove is also provided on the sphere, and the circulation groove runs through the axis of the sphere. The guide block arranged on the valve seat is installed inside the guide groove arranged on the surface of the sphere by a clearance fit. Through the sliding fit of the guide groove and the guide block, the smoothness of the rotation of the ball on the valve seat is improved, thereby improving the stability of the rotation of the ball inside the valve body.

[0008] As a further improvement of the present invention, an adjusting mechanism is also provided inside the sphere, and a guide cover, a fixed column and a positioning valve plate are provided on the adjusting mechanism. The top of the guide cover is installed on the top of the inner part of the casing, and the guide cover is abutted against the top of the driving rod for rotational guidance. The lower end of the guide cover is connected with a fixed column, and the fixed column is passed through the valve stem and the driving rod by a clearance fit. When the valve stem and the driving rod rotate, the fixed column remains stationary, and the lower end of the fixed column is connected with a positioning valve plate. The positioning valve plate remains stationary through the fixed connection between the guide cover and the fixed column, and there is relative steering between the guide cover and the sphere during the rotation adjustment process, so that the opening and closing angles of the flow slot inside the sphere are adjusted.

[0009] As a further improvement of the present invention, a valve seat ring is further provided on the valve seat, a guide block is provided on the inner wall of the valve seat ring, blocking strips are provided at the front and rear ends of the valve seat ring, a magnetic strip is embedded on the inner wall of the blocking strip, and both the blocking strip and the magnetic strip are in an arc-shaped structure, which are abutted against the outer surface of the conducting ring, and the metal strip arranged on the surface of the conducting ring is magnetically connected through the magnetic strip, thereby improving the firmness of the conducting ring stuck on the inner side of the blocking strip.

[0010] As a further improvement of the present invention, a limiting mechanism is provided on the left and right sides of the valve seat ring, and the limiting mechanism includes a limiting strip, a connecting rod, an articulated slider, a spring rod, and a buffer strip. The limiting strip is welded to the bottom of the side of the valve seat ring, and the limiting strip is connected to the articulated slider through the connecting rod. The spring rod arranged inside the buffer strip applies a guiding elastic force to the articulated slider. Under the elastic cooperation of the connecting rod, the articulated slider and the spring rod, the buffer strip on the inner side of the limiting strip contacts the surface of the conducting ring that is rotated to open, thereby limiting the angle of the conducting ring after the ball drives it to rotate and playing a buffering role at the same time.

[0011] The beneficial effects of the present invention are:

[0012] 1. When the pressure inside the liquid inlet exceeds the set value, the length of the small electric push rod is controlled according to the size of the detected pressure value, thereby driving the rack to drive the rotation range of the rotating gear. The greater the pressure value exceeds the set value, the longer the length of the small electric push rod is extended and the larger the rotation range of the meshing rotating gear is, so that the driving rod drives the valve stem to drive the valve ball to rotate inside the valve body. The flow rate of the liquid inside the valve body is accurately controlled to avoid excessive or insufficient flow rate of the liquid inside the valve body, so as to quickly and accurately adjust the stability of the pressure inside the valve body;

[0013] 2. The metal strips provided on the surface of the conductive ring are magnetically connected through the magnetic strips to improve the firmness of the conductive ring stuck inside the blocking strips, ensuring that the conductive ring will not be easily separated from the blocking strips, thereby fixing the ball after it is rotated to the closed state, avoiding the situation where the ball rotates at an angle again due to loose closure and leakage;

[0014] 3. The buffer strip on the inner side of the limit strip contacts the surface of the conduction ring that is turned to open, thereby limiting the angle of the conduction ring driven by the ball and playing a buffering role, avoiding excessive squeezing of the limit strip after the ball is opened to the angle of maximum flow, causing the valve seat to be loosened due to excessive force, ensuring that the valve seat can be stably and firmly installed inside the valve body to improve the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a schematic structural diagram of a self-adjusting, sealing, high-temperature resistant ball valve.

[0016] Figure 2 Schematic diagram of the internal structure of the valve body of the present invention.

[0017] Figure 3 It is a schematic diagram of the internal structure of the self-adjusting mechanism of the present invention.

[0018] Figure 4 It is a schematic diagram of the top structure of the driving mechanism of the present invention.

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the valve ball of the present invention.

[0020] Figure 6 It is a structural schematic diagram of the valve ball and the amount adjusting mechanism of the present invention.

[0021] Figure 7 It is a structural schematic diagram of the valve seat of the present invention.

[0022] Figure 8 It is a structural schematic diagram of the limiting mechanism of the present invention.

[0023] In the figure: liquid inlet end-1, valve body-2, self-adjusting mechanism-3, manual lever-4, liquid outlet end-5, housing-31, hydraulic sensor-32, PLC processing end-33, drive mechanism-34, support pipe seat-35, valve stem-36, valve ball-37, small electric push rod-341, rack-342, guide frame-343, rotating gear-344, drive rod-345, reinforcing rib-346, ball-371, conduction ring-372, Valve seat-373, adjusting mechanism-374, circulation groove-3711, guide groove-3712, guide cover-3741, fixing column-3742, positioning valve plate-3743, valve seat ring-3731, guide block-3732, limiting mechanism-3733, blocking strip-3734, magnetic strip-3735, limiting strip-7331, connecting rod-7332, articulated slider-7333, spring rod-7334, buffer strip-7335. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings:

[0025] Embodiment 1: As attached Figure 1 To Attachment Figure 6 As shown:

[0026] The present invention discloses a self-adjusting, sealing, high-temperature resistant ball valve, which comprises a liquid inlet 1, a valve body 2, a self-adjusting mechanism 3, a manual lever 4, and a liquid outlet 5. The liquid inlet 1 and the liquid outlet 5 are respectively installed at the left and right ends of the valve body 2, and the self-adjusting mechanism 3 is installed on the top of the valve body 2. The hydraulic pressure inside the liquid inlet 1 installed on the valve body 2 is monitored by a hydraulic pressure sensor 32 arranged on the self-adjusting mechanism 3. The manual lever 4 is connected to a valve stem 36 arranged on the self-adjusting mechanism 3. The valve stem 36 is manually controlled by the manual lever 4. The valve stem 36 rotates and adjusts a valve ball 37 arranged at the lower end of the self-adjusting mechanism 3, and the valve ball 37 is installed inside the valve body 2. A housing 31 is also provided on the self-adjusting mechanism 3, and a PLC processing end 33 is installed inside the housing 31.

[0027] The driving mechanism 34 is composed of a small electric push rod 341, a rack 342, a guide frame 343, a rotating gear 344, a driving rod 345 and a reinforcing rib 346. The small electric push rod 341 is controlled by the PLC processing end 33, and the output end of the small electric push rod 341 is welded with a rack 342. The small electric push rod 341 pushes the rack 342 to move inside the guide frame 343, and the moving rack 342 meshes with the rotating gear 344 to rotate. The rotating gear 344 drives the driving rod 345 through the reinforcing rib 346 to drive the valve stem 36 to rotate inside the support pipe seat 35 set on the self-adjusting mechanism 3 to adjust the angle of the valve ball 37.

[0028] The valve ball 37 comprises a sphere 371, a conducting ring 372 and a valve seat 373. The conducting ring 372 is embedded on the surface of the sphere 371, and the surface of the conducting ring 372 abuts against the valve seat 373. The valve seat 373 is installed at the connection between the outer side of the sphere 371 and the inner side of the valve body 2, and the gap between the outer side of the sphere 371 and the inner side of the valve body 2 is sealed and connected by the valve seat 373. The sphere 371 is also provided with a flow groove 3711, which runs through the axis of the sphere 371. The guide block 3732 provided on the valve seat 373 is installed in the guide groove 3712 provided on the surface of the sphere 371 by a clearance fit. A volume regulating mechanism 374 is also provided inside the sphere 371, and a guide cover 3741, a fixing column 3742, and a positioning valve plate 3743 are provided on the volume regulating mechanism 374. The top of the guide cover 3741 is installed at the top of the inner part of the housing 31, and the guide cover 3741 contacts the top of the driving rod 345 for rotational guidance. The lower end of the guide cover 3741 is connected to a fixing column 3742, and the fixing column 3742 is inserted into the valve stem 36 and the driving rod 345 by a clearance fit. When the valve stem 36 and the driving rod 345 rotate, the fixing column 3742 remains stationary, and the lower end of the fixing column 3742 is connected to a positioning valve plate 3743.

[0029] Among them, the PLC processing end 33 adopts a PLC pressure transmitter, which is a device that converts pressure into electrical signals for control and remote transmission. The hydraulic data monitored by the hydraulic sensor 32 is processed by the PLC processing end 33 and converted into electrical signals to control the operation of the driving mechanism 34 set on the self-regulating mechanism 3.

[0030] A preferred technical solution is that two small electric push rods 341, racks 342 and guide frames 343 are each provided and are installed in opposite directions on the left front and right rear positions of the rotating gear 344. The two small electric push rods 341 are controlled to operate simultaneously through the PLC processing end 33. The two racks 342 apply power to the rotating gear 344 to rotate in the same direction, ensuring that the rotating gear 344 can rotate effectively and on a fixed axis.

[0031] A preferred technical solution is that the positioning valve plate 3743 is a disc-shaped structure, and its diameter is slightly smaller than the diameter of the circulation groove 3711, to prevent the rotation of the ball 371 from being hindered by the fixed positioning valve plate 3743 and unable to rotate, and to ensure that after the positioning valve plate 3743 is set inside the circulation groove 3711, the ball 371 can rotate normally to open and close and accurately adjust the liquid circulation amount.

[0032] In the present invention, the hydraulic pressure value is monitored inside the liquid inlet end 1 by the hydraulic sensor 32, and converted into an electrical signal through the PLC processing end 33 to control the operation of the small electric push rod 341. When the pressure inside the liquid inlet end 1 exceeds the set value, the extension length of the small electric push rod 341 is controlled according to the size of the detected pressure value, thereby driving the rack 342 to drive the rotation range of the rotating gear 344. When the pressure value exceeds the set value, the longer the extension length of the small electric push rod 341 is, the larger the rotation range of the meshing rotating gear 344 is, so that the driving rod 345 drives the valve stem 36 to drive the valve ball 37 to rotate inside the valve body 2. The larger the angle, the greater the rotation angle of the valve ball 37 inside the valve body 2. On the contrary, when the detected pressure value exceeds the set value by a small amount, the rotation angle of the valve ball 37 inside the valve body 2 is reduced, and the flow rate of the liquid inside the valve body 2 is accurately controlled to avoid excessive or insufficient flow rate of the liquid inside the valve body 2, thereby being able to quickly and accurately adjust the internal pressure stability of the valve body 2.

[0033] In the present invention, the positioning valve plate 3743 is kept stationary through the fixed connection between the guide cover 3741 and the fixed column 3742, and there is a relative rotation between the positioning valve plate 3743 and the sphere 371 during the rotation adjustment process, so that the opening and closing angle of the flow groove 3711 inside the sphere 371 is adjusted. The larger the turning angle of the sphere 371, the larger the intersection angle formed by the positioning valve plate 3743 and the flow groove 3711 on the sphere 371 until they are parallel. At this time, the flow volume inside the flow groove 3711 is larger, and vice versa, the smaller it is, thereby more accurately controlling the flow volume of the liquid inside the valve body 2 and more accurately adjusting the hydraulic stability inside the valve body 2.

[0034] Embodiment 2: Based on embodiment 1, as shown in the attached Figure 6 To Attachment Figure 8 As shown:

[0035] The valve seat 373 is also provided with a valve seat ring 3731, and a guide block 3732 is provided on the inner wall of the valve seat ring 3731. Blocking strips 3734 are provided at the front and rear ends of the valve seat ring 3731, and a magnetic strip 3735 is embedded on the inner wall of the blocking strip 3734. The blocking strip 3734 and the magnetic strip 3735 are both arc-shaped structures, and are abutted against the outer surface of the conduction ring 372; the valve seat ring 3731 is provided with a limiting mechanism 3733 on the left and right sides, and the limiting mechanism 3733 includes a limiting strip 7331, a connecting rod 7332, an articulated slider 7333, a spring rod 7334, and a buffer strip 7335. The limiting strip 7331 is welded to the bottom of the side of the valve seat ring 3731, and the limiting strip 7331 is connected to the articulated slider 7333 through the connecting rod 7332, and a guiding elastic force is applied to the articulated slider 7333 through the spring rod 7334 arranged inside the buffer strip 7335.

[0036] A preferred technical solution is that two valve seat rings 3731 are provided and have an annular structure. The two valve seat rings 3731 are respectively located in the gaps at both ends of the upper end of the ball 371 installed inside the valve body 2. At the same time, guide blocks 3732 are provided at both ends of the inner side of each valve seat ring 3731. The guide blocks 3732 are guided and slid inside the guide grooves 3712 set on the surface of the ball 371 to ensure that the valve seat ring 3731 can stably rotate and guide the ball 371, and at the same time, the rotation of the ball 371 inside the valve body 2 is sealed to avoid leakage.

[0037] A preferred technical solution is that the connecting rod 7332, the articulated slider 7333 and the spring rod 7334 are each provided with two, and the two connecting rods 7332 are connected to form a V-shaped structure. When the two spring rods 7334 apply elastic force to guide the articulated slider 7333, the connecting rod 7332 is elastically linked, so that the conducting ring 372 buffers the extrusion of the buffer strip 7335.

[0038] In the present invention, the metal strips provided on the surface of the conducting ring 372 are magnetically connected by the magnetic strips 3735, so as to improve the firmness of the conducting ring 372 being stuck inside the blocking strips 3734, and ensure that the conducting ring 372 will not be easily separated from the blocking strips 3734, so as to fix the ball 371 after it is rotated to the closed state, and avoid the situation that the ball 371 rotates again due to the loose closing and causes leakage;

[0039] In the present invention, with the elastic cooperation of the connecting rod 7332, the hinged slider 7333 and the spring rod 7334, the buffer strip 7335 on the inner side of the limit strip 7331 contacts the surface of the conducting ring 372 that is rotated to open, thereby limiting the angle of the conducting ring 372 driven by the ball 371 after rotation and playing a buffering role, thereby preventing the limit strip 7331 from being excessively squeezed after the ball 371 is opened to the angle of maximum flow, causing the valve seat 373 to be loosened due to excessive force, thereby ensuring that the valve seat 373 can be stably and firmly installed inside the valve body 2 to improve the sealing effect.

[0040] Utilizing the technical solution of the present invention, or those skilled in the art designing similar technical solutions inspired by the technical solution of the present invention to achieve the above-mentioned technical effects, all fall within the protection scope of the present invention.

Claims

1. A self-adjusting, sealing, high-temperature resistant ball valve, comprising a liquid inlet (1), a valve body (2), a self-adjusting mechanism (3), a manual lever (4), and a liquid outlet (5), wherein the liquid inlet (1) and the liquid outlet (5) are respectively mounted on the left and right ends of the valve body (2), and a self-adjusting mechanism (3) is mounted on the top of the valve body (2), and the hydraulic pressure inside the liquid inlet (1) mounted on the valve body (2) is monitored by a hydraulic pressure sensor (32) arranged on the self-adjusting mechanism (3), and the manual lever (4) is connected to a valve stem (36) arranged on the self-adjusting mechanism (3), and the valve stem (36) is manually controlled by the manual lever (4), and the valve stem (36) is rotationally adjusted by the valve stem (36) to rotate a valve ball (37) arranged at the lower end of the self-adjusting mechanism (3), and the valve ball (37) is mounted inside the valve body (2), characterized in that: The self-adjusting mechanism (3) is also provided with a housing (31), and a PLC processing terminal (33) is installed inside the housing (31). The PLC processing terminal (33) processes the hydraulic data monitored by the hydraulic sensor (32) and converts it into an electrical signal to control the operation of a driving mechanism (34) provided on the self-adjusting mechanism (3); The driving mechanism (34) is composed of a small electric push rod (341), a rack (342), a guide frame (343), a rotating gear (344), a driving rod (345) and a reinforcing rib (346). The small electric push rod (341) is controlled to operate by a PLC processing end (33), and a rack (342) is welded to the output end of the small electric push rod (341). The small electric push rod (341) pushes the rack (342) to move inside the guide frame (343), and the moving rack (342) meshes with the rotating gear (344) to rotate. The rotating gear (344) drives the driving rod (345) through the reinforcing rib (346) to drive the valve stem (36) to rotate inside a support pipe seat (35) provided on the self-adjusting mechanism (3), thereby adjusting the angle of the valve ball (37). The valve ball (37) comprises a ball (371), a conducting ring (372), and a valve seat (373); the conducting ring (372) is embedded in the surface of the ball (371), and the surface of the conducting ring (372) abuts against the valve seat (373); the valve seat (373) is installed at the connection between the outside of the ball (371) and the inside of the valve body (2), and the gap between the outside of the ball (371) and the inside of the valve body (2) is sealed and connected via the valve seat (373); The sphere (371) is also provided with a circulation groove (3711), the circulation groove (3711) runs through the axis of the sphere (371), and the guide block (3732) provided on the valve seat (373) is installed in the guide groove (3712) provided on the surface of the sphere (371) by means of clearance fit; The sphere (371) is also provided with a volume regulating mechanism (374), and the volume regulating mechanism (374) is provided with a guide cover (3741), a fixing column (3742), and a positioning valve plate (3743). The top of the guide cover (3741) is mounted on the top of the housing (31), and the guide cover (3741) contacts the top of the driving rod (345) for rotational guidance. The lower end of the guide cover (3741) is connected to a fixing column (3742), and the fixing column (3742) is inserted into the valve stem (36) and the driving rod (345) with a clearance fit. When the valve stem (36) and the driving rod (345) rotate, the fixing column (3742) remains stationary, and the lower end of the fixing column (3742) is connected to a positioning valve plate (3743).

2. A self-adjusting, sealing, high temperature resistant ball valve according to claim 1, characterized in that: The valve seat (373) is also provided with a valve seat ring (3731), the inner wall of the valve seat ring (3731) is provided with a guide block (3732), the front and rear ends of the valve seat ring (3731) are provided with blocking strips (3734), the inner wall of the blocking strip (3734) is embedded with a magnetic strip (3735), and both the blocking strip (3734) and the magnetic strip (3735) are in an arc-shaped structure and are matched with the outer surface of the conduction ring (372).

3. A self-adjusting, sealing, high temperature resistant ball valve according to claim 2, characterized in that: The valve seat ring (3731) is provided with a limiting mechanism (3733) on both sides thereof, and the limiting mechanism (3733) comprises a limiting strip (7331), a connecting rod (7332), an articulated slider (7333), a spring rod (7334), and a buffer strip (7335). The limiting strip (7331) is welded to the bottom of the side of the valve seat ring (3731), the limiting strip (7331) is connected to the articulated slider (7333) via the connecting rod (7332), and a guiding elastic force is applied to the articulated slider (7333) via a spring rod (7334) arranged inside the buffer strip (7335).

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