Elliptic ball valve

Abstract

The invention provides an oval ball valve, and relates to the technical field of ball valves, the oval ball valve comprises a main valve seat, an auxiliary valve seat, a fixed seat and a sealing cover plate, and further comprises a valve ball, a filter plate, a shaft rod, a valve rod assembly, a rotating cover, a threaded supporting ring, an extrusion sleeve, a spiral groove and a rotation angle sensor, the valve rod assembly can control the valve ball to turn over and can prevent mistaken opening, and when the ball valve is opened, the valve rod can be opened. The spiral groove is formed in the extrusion sleeve, vertical grooves are formed in the bottoms of the two ends of the spiral groove, a guide block is arranged in the spiral groove, and the guide block is fixedly connected with the valve rod assembly; the angle sensor is used for detecting the deflection angle of the rotating cover. By arranging the components, the sealing performance of the valve is effectively improved, the functions of self-locking and misoperation prevention are added, and the risk of blockage is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of ball valves, in particular to an elliptical ball valve. Background Art

[0002] A ball valve is a valve with a sphere as its opening and closing element. The ball, driven by the valve stem, rotates about the stem's axis. The ball has a channel for the flow of the medium, which flows through the channel, thereby achieving flow. When the ball rotates to close the channel, it blocks the medium, thus achieving a seal. An elliptical ball valve is a special type of ball valve in which the channel of the closing element (the ball) is elliptical rather than circular. This design allows the fluid to flow through a larger flow area when the valve is open, thereby reducing flow resistance and improving fluid flow efficiency.

[0003] However, within the scope of existing technology, the design of ball valves still has certain limitations. Specifically, its handle lacks a convenient fixed limit mechanism, which makes the handle susceptible to accidental touch or impact in complex environments, resulting in unexpected rotation, which may in turn trigger the opening or closing of the ball valve by mistake, which may not only affect the continuity and efficiency of fluid delivery, but also cause safety accidents in extreme cases. In addition, in the actual fluid transmission process, the fluid often contains a certain amount of impurities, and traditional ball valves generally lack the ability to effectively filter such impurities. If these impurities pass through the valve with the fluid, they may cause damage to downstream equipment and even affect the quality stability of the final product. Therefore, the development of a ball valve that can effectively prevent misoperation of the handle and has the function of filtering impurities has become an important direction for current technological improvements. Summary of the Invention

[0004] The purpose of the present invention is to provide an elliptical ball valve, aiming to solve the problems of misoperation of the handle of the elliptical ball valve and failure to filter and remove impurities in the general technology.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: an elliptical ball valve, comprising a main valve seat and a sub-valve seat connected to the main valve seat, a fixed seat being fixedly mounted on the outer surface of the main valve seat, a sealing cover plate being detachably mounted on the top of the fixed seat, and a valve ball being rotatably mounted inside the main valve seat; a filter plate being rotatably arranged inside the valve ball; a shaft being limitedly plugged into the filter plate and extending to the outside of the sealing cover plate; a valve stem assembly being sleeved on the outside of the shaft stem and being able to control the flipping of the valve ball and prevent accidental opening, and being able to enhance the sealing between the valve stem assembly and the fixed seat when the ball valve is opened. a rotating cover, which is slidably connected to the shaft through a connecting piece and is connected to the top of the valve stem assembly through a torsion spring; a threaded support ring, which is threadedly connected to the fixed seat, and the upper end of which abuts against the first elastic member; an extrusion sleeve, whose limited sliding sleeve is arranged in the threaded support ring, and is sleeved on the outside of the valve stem assembly; a spiral groove, which is opened inside the extrusion sleeve, and vertical grooves are opened at the bottom of both ends, and a guide block is provided inside it, and the guide block is fixedly connected to the valve stem assembly; a rotation angle sensor, which is sleeved outside the rotating cover and connected to the sealing cover plate, and is used to detect the deflection angle of the rotating cover.

[0006] Preferably, the valve stem assembly includes a first valve stem, one end of which is rotatably placed in a fixed seat, and the other end of which is limitedly connected to the surface of the valve ball, a receiving groove is provided at the top, a clamping groove is provided on the inner wall of the receiving groove, and a retaining spring is provided in the clamping groove; a first rubber sealing ring is sleeved on the middle part of the first valve stem and located inside the fixed seat; a second rubber sealing ring is sleeved on the middle part of the first valve stem and located on the top of the first rubber sealing ring; a second valve stem, one end of which is limitedly slidably sleeved in the first valve stem; a second elastic member is placed in the receiving groove and is used to press the second valve stem downward.

[0007] Preferably, the second valve stem includes an adjustment section and a boss section; a plug-in hole is provided at the bottom of the adjustment section, the top of the boss section is placed in the plug-in hole, and is fixed to the adjustment section by screws; a docking boss is fixedly connected to the middle part of the shaft, which is placed in the plug-in hole; the top of the boss section can engage with the docking boss.

[0008] Preferably, a docking groove for limited insertion with the connector is provided on the top of the rotating cover; and the top of the connector is connected to the top of the rotating cover by bolts.

[0009] Preferably, the top of the filter plate is fixedly connected with a docking sleeve, which has a guiding inclined groove inside; the outer side of the bottom of the shaft is fixedly connected with a limiting boss that can be inserted into the guiding inclined groove.

[0010] Preferably, a filter plate placement opening is provided on the top of the valve ball; and a sealing cover is further provided, which is adapted to the filter plate placement opening and has a limiting plug-in hole on the top thereof that cooperates with the first valve stem.

[0011] Preferably, the side wall of the rotating cover is provided with a through groove for facilitating installation of the handle.

[0012] Preferably, a connecting stud is fixedly connected to the top of the second valve stem, and a fixing nut for reinforcing the handle is threadedly installed on the end of the connecting stud.

[0013] Preferably, the main valve seat and the auxiliary valve seat are connected by a plurality of first mounting bolts.

[0014] Technical effects and advantages of the present invention: 1. The present invention effectively avoids the problem of opening / closing the ball valve due to accidental touch by arranging a valve ball, a shaft, a handle, an extrusion sleeve, a spiral groove, a vertical groove and a guide block. When manually controlling the opening / closing of the ball valve, it is necessary to manually pull the handle upwards so that the guide block enters the spiral groove along the vertical groove. Only then can the handle be turned to control the rotation of the valve ball through the shaft to adjust the opening / closing of the ball valve. After the adjustment, the guide block will enter the vertical groove, so that the shaft cannot rotate relative to the extrusion sleeve, preventing the valve ball from rotating due to accidental touch, fixing the valve ball relative to the main valve seat, increasing the self-locking function, reducing the risk of accidental touch, and improving the stability of the valve body operation.

[0015] 2. The present invention effectively increases the function of filtering solid dirt by providing a valve ball and a filter plate. The solid matter in the liquid / gas passing through the valve ball needs to pass through the filter plate. During this process, the filter plate will block the solid particles therein. Due to the inconsistent thickness on both sides of the filter plate, the impurities filtered by the filter plate gradually increase and accumulate on the side with thinner thickness, the resistance increases, causing the filter plate to deflect to one side. The deflection of the filter plate makes the filter plate more inclined, and then the impurities accumulate more on the side with thinner thickness, thereby reducing the occurrence of filter plate clogging and optimizing the collection of dirt.

[0016] 3. The present invention effectively adds a blockage monitoring function by providing a rotating cover, a filter plate and a rotation angle sensor. When the filter plate is blocked, it will flip to one side, and the rotating cover will flip synchronously through the shaft. During this process, the rotation angle sensor monitors the rotation angle of the rotating cover. When it is detected that the flip angle is greater than the first preset value, it indicates that the filter plate needs to be cleaned, and the operator is promptly alerted.

[0017] 4. The present invention effectively detects the open / closed state of the valve body by providing a handle, a rotating cover and a rotation angle sensor. When in use, the rotation angle sensor detects whether the rotating cover rotates to reach a second preset value. By judging the state of the valve body before rotation, it is judged whether the through hole in the valve ball connects / disconnects the main valve seat and the auxiliary valve seat, thereby determining the state of the valve body.

[0018] 5. The present invention effectively improves the sealing performance of the valve body by providing a valve stem assembly, a spiral groove, a vertical groove and a guide block. When the handle is rotated, the extrusion sleeve slides downward under the action of the guide block and the spiral groove. The extrusion sleeve slides downward to squeeze the first rubber sealing ring and the second rubber sealing ring, thereby achieving enhanced sealing between the valve stem assembly and the fixed seat when the valve ball is opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the conducting state of the ball valve of the present invention.

[0021] Figure 3 It is a sectional view of the overall structure of the present invention.

[0022] Figure 4 It is a structural schematic diagram of the valve ball in the present invention.

[0023] Figure 5 It is a cross-sectional view of the valve stem assembly in the present invention.

[0024] Figure 6 It is a disassembly diagram of the second valve stem in the present invention.

[0025] Figure 7 It is a structural schematic diagram of the central axis of the present invention.

[0026] Figure 8 It is a schematic diagram of the position of the threaded support ring in the present invention.

[0027] Figure 9 It is a top view of the filter plate of the present invention.

[0028] Figure 1: Main valve seat; 101: Fixed seat; 102: Sealing cover plate; 2: Auxiliary valve seat; 3: Valve ball; 301: Filter plate placement port; 302: Sealing cover; 303: Position limiting plug hole; 4: Filter plate; 40: Docking sleeve; 41: Guide chute; 42: Position limiting boss; 5: Shaft; 6: Valve stem assembly; 601: First valve stem; 6011: Accommodating groove; 6012: Clamping groove; 6013: Circlip; 602: First rubber sealing ring; 603: Second rubber sealing ring Sealing ring; 604, second valve stem; 6041, adjustment section; 6042, boss section; 6043, plug-in hole; 6044, docking boss; 605, second elastic member; 606, connecting stud; 607, fixing nut; 7, handle; 8, rotating cover; 801, through groove; 802, docking groove; 9, connecting member; 10, threaded support ring; 110, first elastic member; 11, extrusion sleeve; 14, spiral groove; 15, vertical groove; 16, guide block; 17, angle sensor. DETAILED DESCRIPTION

[0029] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] In embodiment 1, the present invention provides Figures 1 to 9 An elliptical ball valve is shown, comprising a main valve seat 1 and an auxiliary valve seat 2 connected to the main valve seat 1, wherein a fixed seat 101 is fixedly mounted on the outer surface of the main valve seat 1, and a sealing cover plate 102 is detachably mounted on the top of the fixed seat 101. The valve ball 3 is also included, which is rotatably mounted inside the main valve seat 1, and the outer side of the valve ball 3 is relatively rotatably sealed with the inner side of the main valve seat 1. A through hole is opened in the middle of the valve ball 3 for connecting the main valve seat 1 and the auxiliary valve seat 2.

[0031] Specifically, the main valve seat 1 and the auxiliary valve seat 2 are connected by multiple first mounting bolts, and a sealing gasket is installed between the main valve seat 1 and the auxiliary valve seat 2 to improve the sealing between the main valve seat 1 and the auxiliary valve seat 2. The sealing cover plate 102 is connected to the fixed seat 101 by multiple second mounting bolts, and a sealing gasket is also provided between the sealing cover plate 102 and the fixed seat 101.

[0032] More specifically, it also includes a valve stem assembly 6, which is sleeved inside the fixed seat 101, is connected to the valve ball 3, and can control the flipping of the valve ball 3. The valve ball 3 rotates to connect / disconnect the middle through hole with the main valve seat 1 / auxiliary valve seat 2. The ball valve is turned on / off by flipping the valve ball 3, and can prevent accidental opening. When the ball valve is opened, the sealing between the valve stem assembly 6 and the fixed seat 101 can be enhanced, and a handle 7 is provided on the top. By setting the valve stem assembly 6, the present invention can avoid the ball valve being closed due to accidental touching, affecting its delivery efficiency, or opening it to cause a safety accident when a person accidentally touches the valve stem assembly 6.

[0033] The threaded support ring 10 is threadedly connected to the fixed seat 101, and a limiting protrusion is fixed on the inner side; the extrusion sleeve 11, whose limiting sliding sleeve is arranged in the threaded support ring 10, and is arranged outside the valve stem assembly 6. A sliding groove is provided on the outer side of the extrusion sleeve 11 corresponding to the protrusion position of the threaded support ring 10, and the protrusion is placed in the sliding groove so that the extrusion sleeve 11 can only slide relative to the threaded support ring 10. The upper end of the threaded support ring 10 abuts against the first elastic member 110, and the other end abuts against the extrusion sleeve 11.

[0034] The spiral groove 14 is opened inside the extrusion sleeve 11, and vertical grooves 15 are opened at the bottom of both ends. The vertical groove 15 at one end extends to the bottom of the extrusion sleeve 11, and a guide block 16 is provided inside it. The guide block 16 is fixedly connected to the valve stem assembly 6; the present invention provides the spiral groove 14, the vertical groove 15 and the guide block 16. On the one hand, it can prevent the valve stem assembly 6 from rotating due to accidental touch; on the other hand, it can enhance the sealing between the valve stem assembly 6 and the fixed seat 101.

[0035] Specifically, the valve stem assembly 6 includes a first valve stem 601, one end of which is rotatably placed in a fixed seat 101, and the other end of which is limitedly connected to the surface of the valve ball 3, which can drive the valve ball 3 to rotate and control the opening / closing of the valve. A receiving groove 6011 is provided on the top of the first valve stem 601, and a clamping groove 6012 is provided on the inner wall of the receiving groove 6011, and a retaining spring 6013 is provided in the retaining groove 6012; the present invention sets the retaining spring 6013 to limit the second elastic member 605 and prevent the second elastic member 605 from popping out of the receiving groove 6011.

[0036] The first rubber sealing ring 602 is sleeved on the middle of the first valve stem 601 and is located below the fixing seat 101 . The present invention provides the first rubber sealing ring 602 to improve the sealing performance between the fixing seat 101 and the first valve stem 601 .

[0037] The second rubber sealing ring 603 is sleeved on the middle of the first valve stem 601 and located on the top of the first rubber sealing ring 602 . The top of the second rubber sealing ring 603 contacts the bottom of the threaded support ring 10 .

[0038] One end of the second valve stem 604 is limitedly and slidably sleeved in the first valve stem 601 .

[0039] The second elastic member 605 is placed in the accommodating groove 6011 and is used to press the second valve stem 604 downward.

[0040] The present invention provides the second elastic member 605 , thereby pressing the bottom of the second valve stem 604 tightly into the accommodating groove 6011 .

[0041] It should be noted that the elastic force of the second elastic member 605 is greater than that of the first elastic member 110 , so that the bottom of the second valve stem 604 can maintain contact with the accommodating groove 6011 .

[0042] Specifically, a connecting stud 606 is fixedly connected to the top of the second valve stem 604 , and a fixing nut 607 for reinforcing the handle 7 is threadedly installed on the end of the connecting stud 606 , and the handle 7 is pressed against the outside of the second valve stem 604 by the fixing nut 607 .

[0043] During assembly, first place the valve ball 3 into the main valve seat 1, then place the second valve stem 604 into the receiving groove 6011 at the top of the first valve stem 601, then place the second elastic member 605, and then snap the retaining ring 6013 into the retaining groove 6012, then sleeve the first rubber sealing ring 602 and the second rubber sealing ring 603 onto the first valve stem 601, then install the first valve stem 601 into the fixing seat 101, and make the bottom of the first valve stem 601 dock with the top of the valve ball 3, then install the threaded support ring 10 and the first elastic member 110, and then insert the extrusion sleeve 11, so that the vertical groove 15 corresponding to the lowest position of the spiral groove 14 on the extrusion sleeve 11 is opposite to the guide block 16, then sleeve the extrusion sleeve 11 onto the second valve stem 604, then connect the sealing cover plate 102 to the fixing seat 101 through multiple second mounting bolts, and finally install the handle 7 on the top of the second valve stem 604.

[0044] When it is necessary to adjust the valve switch, first pull the handle 7 upward. The upward movement of the handle 7 will drive the second valve stem 604 to move upward, so that the guide block 16 enters the spiral groove 14 from the vertical groove 15, and then turn the handle 7. During the rotation of the handle 7, the force pulling the handle 7 upward is released. Under the action of the guide block 16 and the spiral groove 14, the extrusion sleeve 11 slides downward. The extrusion sleeve 11 slides downward to squeeze the first rubber sealing ring 602 and the second rubber sealing ring 603, thereby achieving enhanced sealing between the valve stem assembly 6 and the fixed seat 101 when the valve ball 3 is opened; when the handle 7 is rotated ninety degrees, since the other vertical groove 15 corresponds to the guide block 16, the extrusion sleeve 11 will be pushed to slide upward under the elastic force of the first elastic member 110, so that the guide block 16 enters the vertical groove 15 at the other end of the spiral groove 14, completing the locking of the handle 7 and the valve ball 3 to avoid misoperation.

[0045] Since the initial position of the guide block 16 is located in the vertical groove 15 of the spiral groove 14, when the handle 7 is accidentally touched, the guide block 16 acts on the vertical groove 15, giving the vertical groove 15 a rotational extrusion force, so that the extrusion sleeve 11 has a tendency to rotate. Since the extrusion sleeve 11 is connected to the threaded support ring 10 in a limited sliding manner, the extrusion sleeve 11 is prevented from rotating, thereby achieving accidental touching.

[0046] Example 2 In actual use, it is found that the fluid passing through the ball valve may contain impurities. However, general ball valves lack the ability to filter impurities. The presence of impurities in the fluid may affect the quality of the final product. Based on Example 1, the following improvements are made.

[0047] The invention also includes a filter plate 4, which is rotatably disposed in the valve ball 3 and has a larger diameter than the flow channel of the valve ball 3. The filter plate 4 is provided to filter impurities in the fluid. Specifically, the filter plate 4 gradually increases in thickness in the horizontal direction.

[0048] The shaft 5 is inserted into the filter plate 4 in a limited position and extends to the outside of the sealing cover plate 102 .

[0049] Specifically, a rotation groove adapted to the filter plate 4 is provided in the valve ball 3 , and a filter plate placement opening 301 is provided on the top of the valve ball 3 ; the present invention facilitates the installation of the filter plate 4 by providing the filter plate placement opening 301 .

[0050] It also includes a sealing cover 302, which is adapted to the filter plate placement port 301, and a limiting plug hole 303 is provided on the top of the filter plate 4 to cooperate with the first valve stem 601. The top of the filter plate 4 is fixedly connected to a docking sleeve 40, and a guide bevel 41 is provided inside the same; the bottom outer side of the shaft rod 5 is fixedly connected to a limiting boss 42 that can be inserted into the guide bevel 41, and the sealing cover 302 and the valve ball 3 are fixed by bolts. The end of the shaft rod 5 can pass through the limiting plug hole 303 and make the limiting boss 42 enter the guide bevel 41, driving the docking sleeve 40 and the filter plate 4 to rotate. After the first valve stem 601 is inserted into the limiting plug hole 303, the shaft rod 5 and the docking sleeve 40 are relatively fixed.

[0051] The rotating cover 8 is fixedly connected to the shaft 5 through a connecting piece 9, and is connected to the top of the valve stem assembly 6 through a torsion spring.

[0052] It should be noted that a snap ring is provided at the position of the rotating cover 8 on the top of the fixed seat 101, which enables the rotating cover 8 to rotate only relative to the fixed seat 101 after being installed on the upper end of the fixed seat 101, and will not slide up and down and fall off. The limiting structure of the rotating cover 8 and the fixed seat 101 is existing technology and will not be described in detail here.

[0053] Specifically, a docking groove 802 for limited insertion with the connecting member 9 is opened on the top of the rotating cover 8, and the bottom of the connecting member 9 is inserted into the top of the shaft 5 and rotates synchronously with the shaft 5.

[0054] Specifically, the top of the shaft 5 and the bottom of the rotating cover 8 are both provided with a socket for connecting with a torsion spring. The provision of the torsion spring facilitates the shaft 5 to reset relative to the rotating cover 8.

[0055] The top of the connecting member 9 is connected to the top of the rotating cover 8 by bolts.

[0056] The side wall of the rotating cover 8 is provided with a through slot 801 for the handle 7 to be installed.

[0057] When the impurities filtered by the filter plate 4 gradually increase and accumulate on the side with thinner thickness, the resistance increases, causing the filter plate 4 to deflect to one side. The deflection of the filter plate 4 makes the filter plate 4 more inclined, and the impurities accumulate more on the side with thinner thickness, thereby reducing the occurrence of clogging of the filter plate 4.

[0058] Example 3 In actual use, it is impossible to detect the blockage degree of the filter plate 4 and the open / close state of the valve ball 3. Based on the second embodiment, the following improvements are made.

[0059] The second valve stem 604 includes an adjustment section 6041 and a boss section 6042; a plug-in hole 6043 is provided at the bottom of the adjustment section 6041, and the top of the boss section 6042 is placed in the plug-in hole 6043 and fixed by screws, and the lower end of the second elastic member 605 abuts against the boss section 6042; a docking boss 6044 is fixedly connected to the middle part of the shaft 5, which is placed in the plug-in hole 6043; the top of the boss section 6042 can engage with the docking boss 6044.

[0060] The rotation angle sensor 17 is sleeved outside the rotating cover 8 and connected to the sealing cover plate 102 by bolts. It is used to detect the deflection angle of the rotating cover 8.

[0061] It should be noted that there is a certain height gap between the top of the boss section 6042 and the docking boss 6044. When the top of the boss section 6042 and the bottom of the docking boss 6044 are highly coincident, the rotation limit of the second valve stem 604 and the shaft rod 5 can be achieved. At the same time, as the guide block 16 on the outside of the second valve stem 604 slides along the spiral groove 14, the boss section 6042 continues to overlap with the height of the docking boss 6044, and will not push the shaft rod 5 to slide upward, ensuring that the second valve stem 604 can drive the shaft rod 5 to rotate synchronously during rotation, and will not push the shaft rod 5 to slide upward.

[0062] When in use, first place the valve ball 3 into the main valve seat 1, then insert the shaft 5 through the second valve stem 604, and adjust the docking boss 6044 to enter the plug hole 6043, then insert the end of the boss section 6042 into the plug hole 6043, and use screws to connect the adjustment section 6041 with the boss section 6042, then place the second valve stem 604 into the receiving groove 6011 at the top of the first valve stem 601, then place the second elastic member 605, and then snap the retaining ring 6013 into the snap groove 6012, then put the first rubber sealing ring 602 and the second rubber sealing ring 603 on the first valve stem 601, and then install the first valve stem 601 on the fixing seat 101. and align the bottom of the first valve stem 601 with the top of the valve ball 3, then install the threaded support ring 10, and then put in the extrusion sleeve 11, so that the vertical groove 15 corresponding to the lowest position of the spiral groove 14 on the extrusion sleeve 11 is opposite to the guide block 16, and then put the extrusion sleeve 11 on the second valve stem 604, and then connect the sealing cover plate 102 to the fixed seat 101 through multiple second mounting bolts, insert the torsion spring into the socket at the top of the second valve stem 604, and then put the rotating cover 8 on the outside of the valve stem assembly 6, and at the same time connect the socket at the bottom of the rotating cover 8 with the torsion spring, and then install the handle 7 on the top of the second valve stem 604, and finally connect the rotating cover 8 to the shaft 5 through the connecting piece 9.

[0063] When the valve needs to be opened, first pull the handle 7 upwards. The upward movement of the handle 7 will drive the second valve stem 604 to move upwards. At the same time, the top of the boss section 6042 engages with the docking boss 6044, so that the guide block 16 enters the spiral groove 14 from the vertical groove 15. Then turn the handle 7, and then release the force pulling the handle 7 upwards. Then continue to turn the handle 7. The rotation of the handle 7 will cause the extrusion sleeve 11 to slide downward under the action of the guide block 16 and the spiral groove 14. At the same time, the shaft 5 follows the second valve stem 604 through the docking boss 6044. The two valve stems 604 rotate synchronously. After adjusting the valve ball 3, the handle 7 is released to separate the docking boss 6044 from the boss section 6042. At this time, the shaft 5 can rotate relative to the second valve stem 604. During this process, the filter plate 4 filters the dirt. When one side of the filter plate 4 is blocked, the shaft 5 is used to rotate the rotating cover 8 relative to the second valve stem 604. At the same time, the rotation angle of the rotating cover 8 is monitored by the angle sensor 17. When the rotation angle of the rotating cover 8 is greater than the first preset value, it indicates that the filter plate 4 is seriously blocked and needs to be cleaned.

[0064] When the valve body is manually adjusted to be conductive, the handle 7 causes the rotating cover 8 to rotate synchronously with the valve ball 3, and the rotation angle of the rotating cover 8 is detected by the angle sensor 17 to reach a second preset value. If the valve body is in a closed state before adjustment, the valve body is judged to be conductive after adjustment; if the same, the valve body is judged to be closed.

[0065] It should be noted that the second preset value is greater than the first preset value, and the second preset value is 90 degrees.

[0066] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An elliptical ball valve, comprising a main valve seat (1) and a secondary valve seat (2) connected to the main valve seat (1), wherein a fixing seat (101) is fixedly mounted on the outer surface of the main valve seat (1), and a sealing cover plate (102) is detachably mounted on the top of the fixing seat (101), characterized in that: It also includes a valve ball (3) which is rotatably mounted inside the main valve seat (1); A filter plate (4) rotatably disposed within the valve ball (3); A shaft (5) is inserted into the filter plate (4) in a limited manner and extends to the outside of the sealing cover plate (102); A valve stem assembly (6) is sleeved on the outside of the shaft (5) and is capable of controlling the valve ball (3) to flip and preventing accidental opening. When the ball valve is opened, it is capable of enhancing the sealing between the valve stem assembly (6) and the fixed seat (101). A handle (7) is provided on the top of the valve stem assembly; A rotating cover (8) is slidably connected to the shaft (5) via a connector (9) and is connected to the top of the valve stem assembly (6) via a torsion spring; A threaded support ring (10) is threadedly connected to the fixing seat (101), and the upper end thereof abuts against the first elastic member (110); An extrusion sleeve (11), which is limitedly slidably sleeved inside the threaded support ring (10) and sleeved outside the valve stem assembly (6); A spiral groove (14) is provided inside the extrusion sleeve (11), and vertical grooves (15) are provided at the bottom of both ends of the spiral groove (14), and a guide block (16) is provided inside the spiral groove (14), and the guide block (16) is fixedly connected to the valve stem assembly (6); The rotation angle sensor (17) is sleeved outside the rotating cover (8) and connected to the sealing cover plate (102), and is used to detect the deflection angle of the rotating cover (8).

2. The elliptical ball valve according to claim 1, characterized in that: The valve stem assembly (6) comprises a first valve stem (601), one end of which is rotatably placed in a fixed seat (101), and the other end of which is limitedly connected to the surface of the valve ball (3), and a receiving groove (6011) is provided on the top of the first valve stem. The inner wall of the receiving groove (6011) is provided with a clamping groove (6012), and a clamping spring (6013) is provided in the clamping groove (6012); A first rubber sealing ring (602) is sleeved on the middle portion of the first valve stem (601) and is located inside the fixing seat (101); A second rubber sealing ring (603) is sleeved on the middle portion of the first valve stem (601) and is located on the top of the first rubber sealing ring (602); A second valve stem (604), one end of which is limitedly slidably sleeved inside the first valve stem (601); The second elastic member (605) is placed in the accommodating groove (6011) and is used to press the second valve stem (604) downward.

3. The elliptical ball valve according to claim 2, characterized in that: The second valve stem (604) comprises an adjustment section (6041) and a boss section (6042); The bottom of the adjustment section (6041) is provided with a plug hole (6043), the top of the boss section (6042) is placed in the plug hole (6043) and is fixed to the adjustment section (6041) by screws; A docking boss (6044) is fixedly connected to the middle portion of the shaft (5) and is placed in the plug hole (6043); The top of the boss section (6042) is capable of engaging with the docking boss (6044).

4. The elliptical ball valve according to claim 1, characterized in that: The top of the rotating cover (8) is provided with a docking groove (802) for limited insertion with the connecting piece (9); The top of the connecting member (9) is connected to the top of the rotating cover (8) via bolts.

5. The elliptical ball valve according to claim 1, characterized in that: A butt joint sleeve (40) is fixedly connected to the top of the filter plate (4), and a guide inclined groove (41) is provided inside the butt joint sleeve (40); A limiting boss (42) capable of being inserted into the guiding inclined groove (41) is fixedly connected to the outer side of the bottom of the shaft rod (5).

6. The elliptical ball valve according to claim 1, characterized in that: A filter plate placement opening (301) is provided on the top of the valve ball (3); It also includes a sealing cover (302) that is compatible with the filter plate placement port (301), and a limiting plug-in hole (303) that cooperates with the first valve stem (601) is provided on the top of the sealing cover.

7. The elliptical ball valve according to claim 1, characterized in that: The side wall of the rotating cover (8) is provided with a through slot (801) for facilitating the installation of the handle (7).

8. The elliptical ball valve according to claim 2, characterized in that: A connecting stud (606) is fixedly connected to the top of the second valve stem (604), and a fixing nut (607) for reinforcing the handle (7) is threadedly mounted on the end of the second valve stem (604).

9. The elliptical ball valve according to claim 1, characterized in that: The main valve seat (1) and the auxiliary valve seat (2) are connected via a plurality of first mounting bolts.

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