Elliptical ball valve

Abstract

The application provides an ellipsoidal ball valve and relates to the technical field of ball valves, which comprises a main valve seat, an auxiliary valve seat, a fixed seat, a sealing cover plate, a valve ball, a filter plate, a shaft rod, a valve rod assembly, a rotating cover, a threaded support ring, an extrusion sleeve, a spiral groove and a rotation angle sensor, the valve rod assembly can control the overturning of the valve ball and can prevent mistaken opening, the sealing property between the valve rod assembly and the fixed seat can be enhanced when the ball valve is opened, the spiral groove is arranged in the extrusion sleeve and vertical grooves are arranged at the bottoms of the two ends of the spiral groove, guide blocks are arranged in the spiral groove and the guide blocks are fixedly connected with the valve rod assembly, and the rotation angle sensor is used for detecting the deflection angle of the rotating cover. Through the arrangement of the above components, the sealing property of the valve is effectively improved, the functions of self-locking and mistaken operation prevention are increased, and the risk of blockage is reduced.

Description

TECHNICAL FIELD

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

[0002] A ball valve is a valve in which the closure member is a ball. The ball is supported on a shaft and rotates to open or close the valve. The ball has a bore that is either in line with, or transverse to the direction of fluid flow. When the valve is open, the bore is in the flow stream and provides no flow resistance. When the valve is closed, the bore is perpendicular to the flow stream and provides a high flow resistance. An ellipsoidal ball valve is a special type of ball valve, in which the closure member (ball) has an ellipsoidal shape instead of the usual spherical shape. This design allows the valve to have a larger flow area when open, reducing flow resistance and improving flow efficiency.

[0003] However, in the prior art, the design of ball valves still has certain limitations. Specifically, the handle lacks a convenient fixing and limiting mechanism, which leads to the handle being easily accidentally touched or impacted and unintentionally rotated in complex environments, which may trigger the opening or closing of the ball valve by mistake, affecting the continuity and efficiency of fluid delivery, and in extreme cases, may cause safety accidents. In addition, in the actual fluid transmission process, the fluid often contains a certain amount of impurities, and the traditional ball valve generally lacks effective filtering capability for such impurities. If these impurities pass through the valve with the fluid, they may damage the downstream equipment and even affect the quality stability of the final product. Therefore, developing a ball valve that can effectively prevent handle misoperation and has impurity filtering function has become an important direction for current technical improvement. SUMMARY

[0004] The present application aims to provide an ellipsoidal ball valve, which solves the problems of handle misoperation and inability to filter and remove impurities in the general technology.

[0005] In order to achieve the above object, the application adopts the following technical scheme: the ellipsoidal ball valve comprises a main valve seat and a secondary valve seat connected with the main valve seat, the outer surface of the main valve seat is fixedly provided with a fixed seat, the top of the fixed seat is detachably provided with a sealing cover plate, and a valve ball is rotatably arranged in the main valve seat; a filter plate is rotatably arranged in the valve ball; a shaft rod is limitingly connected with the filter plate and extends to the outside of the sealing cover plate; a valve rod assembly is sleeved on the outside of the shaft rod, can control the overturning of the valve ball, can prevent mistaken opening, can enhance the sealing performance between the valve rod assembly and the fixed seat when the ball valve is opened, and is provided with a handle at the top; a rotating cover is slidably connected with the shaft rod through a connecting piece and is connected with the top of the valve rod assembly through a torsion spring; a threaded support ring is threadedly connected in the fixed seat and is abutted with a first elastic piece at the upper end; a pressing sleeve is limitingly and slidably sleeved in the threaded support ring and is sleeved on the outside of the valve rod assembly; a spiral groove is formed in the inside of the pressing sleeve, vertical grooves are formed at the two ends of the spiral groove, a guide block is arranged in the inside of the spiral groove, and the guide block is fixedly connected with the valve rod assembly; and a rotation angle sensor is sleeved on the outside of the rotating cover, is connected with the sealing cover plate, and is used for detecting the deflection angle of the rotating cover.

[0006] Preferably, the valve rod assembly comprises a first valve rod, one end of the first valve rod is rotatably arranged in the fixed seat, the other end of the first valve rod is limitingly connected with the surface of the valve ball, a containing groove is formed at the top of the first valve rod, a clamping groove is formed in the inner wall of the containing groove, a clamping spring is arranged in the clamping groove, a first rubber sealing ring is sleeved on the middle part of the first valve rod and is arranged in the inside of the fixed seat, a second rubber sealing ring is sleeved on the middle part of the first valve rod and is arranged at the top of the first rubber sealing ring, a second valve rod is limitingly and slidably sleeved in the first valve rod, and a second elastic piece is arranged in the containing groove and is used for pressing the second valve rod downward.

[0007] Preferably, the second valve rod comprises an adjusting section and a boss section, an inserting hole is formed at the bottom of the adjusting section, the top of the boss section is arranged in the inserting hole and is fixed with the adjusting section through a screw, a butt joint boss is fixedly connected with the middle part of the shaft rod and is arranged in the inserting hole, and the top of the boss section can be engaged with the butt joint boss.

[0008] Preferably, the top of the rotating cover is provided with a butt joint groove which is limitingly and insertingly connected with the connecting piece, and the top of the connecting piece is connected with the top of the rotating cover through a bolt.

[0009] Preferably, the top of the filter plate is fixedly connected with a butt joint sleeve, a guide inclined groove is formed in the inside of the butt joint sleeve, and the bottom of the shaft rod is fixedly connected with a limiting boss which can be inserted into the guide inclined groove.

[0010] Preferably, the top of the valve ball is provided with a filter plate placing opening, a sealing cover which is matched with the filter plate placing opening is further arranged, and a limiting inserting hole which is matched with the first valve rod is formed at the top of the sealing cover.

[0011] Preferably, the rotating cover is provided with a through groove on the side wall for conveniently installing the handle.

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

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

[0014] Technical effects and advantages of the present application:

[0015] 1. The valve ball, shaft, handle, extrusion sleeve, spiral groove, vertical groove and guide block are arranged, effectively avoiding the problem of opening / closing of the ball valve caused by accidental touch. When manually controlling the opening / closing of the ball valve, the handle needs to be manually pulled upwards, so that the guide block enters the spiral groove along the vertical groove, and then the handle can be rotated. The shaft controls the rotation of the valve ball, adjusts the opening / closing of the ball valve, and after adjustment, the guide block enters the vertical groove, so that the shaft cannot rotate relative to the extrusion sleeve, preventing accidental touch from causing the valve ball to rotate. The valve ball is fixed 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.

[0016] 2. The valve ball and filter plate are arranged, effectively increasing the function of filtering solid impurities. The solid substances in the liquid / gas passing through the valve ball need to pass through the filter plate. In this process, the filter plate blocks the solid particles. Since the thickness of the filter plate on both sides is not consistent, the impurities filtered by the filter plate gradually increase and accumulate on the side with thinner thickness, increasing the resistance, thereby causing the filter plate to deflect to one side. The deflection of the filter plate makes the filter plate more inclined, and the impurities accumulate more on the side with thinner thickness, thereby reducing the occurrence of filter plate blockage and optimizing the collection of impurities.

[0017] 3. The rotating cover, filter plate and angle sensor are arranged, effectively adding the function of blockage monitoring. When the filter plate is blocked, it will flip to one side and make the rotating cover flip synchronously through the shaft. In this process, the angle sensor monitors the rotation angle of the rotating cover. When the detected flip angle is greater than a first preset value, it indicates that the filter plate needs to be cleaned and the operator is timely warned.

[0018] 4. The handle, rotating cover and angle sensor are arranged, effectively achieving the detection of the opening / closing state of the valve body. When in use, the angle sensor detects whether the rotating cover rotates to a second preset value. Through the state of the valve body before rotation, it is judged whether the through hole in the valve ball makes the main valve seat and the auxiliary valve seat communicate / disconnect, and the state of the valve body is determined.

[0019] 5. By setting the valve stem assembly, spiral groove, vertical groove and guide block, the present invention effectively improves the sealing performance of the valve body. When the handle is rotated, the compression sleeve will slide downward under the action of the guide block and spiral groove. The compression sleeve slides downward and squeezes the first rubber sealing ring and the second rubber sealing ring, thereby enhancing the sealing performance between the valve stem assembly and the fixed seat when the valve ball is opened. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the ball valve in the on-state of the present invention.

[0022] Figure 3 This is a cross-sectional view of the overall structure of the present invention.

[0023] Figure 4 This is a schematic diagram of the valve ball in this invention.

[0024] Figure 5 This is a cross-sectional view of the valve stem assembly in this invention.

[0025] Figure 6 This is a disassembly diagram of the second valve stem in this invention.

[0026] Figure 7 This is a schematic diagram of the shaft structure in this invention.

[0027] Figure 8 This is a schematic diagram showing the position of the threaded support ring in this invention.

[0028] Figure 9 This is a top view of the filter plate in this invention.

[0029] Reference numerals: 1. Main valve seat; 101. Fixed seat; 102. Sealing cover; 2. Secondary valve seat; 3. Valve ball; 301. Filter plate placement port; 302. Sealing cover; 303. Limiting insertion hole; 4. Filter plate; 40. Connecting sleeve; 41. Guide groove; 42. Limiting boss; 5. Shaft; 6. Valve stem assembly; 601. First valve stem; 6011. Receiving groove; 6012. Snap groove; 6013. Snap ring; 602. First rubber sealing ring; 603. Second rubber sealing ring. 604. Sealing ring; 6045. Second valve stem; 6046. Adjusting section; 6047. Boss section; 6048. Insertion hole; 6049. Butt joint boss; 605. Second elastic element; 606. Connecting stud; 607. Fixing nut; 7. Handle; 8. Rotating cover; 801. Through groove; 802. Butt joint groove; 9. Connecting piece; 10. Threaded support ring; 110. First elastic element; 11. Extrusion sleeve; 14. Spiral groove; 15. Vertical groove; 16. Guide block; 17. Angle sensor. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1: The present invention provides as follows Figures 1 to 9 An elliptical ball valve is shown, including a main valve seat 1 and a secondary valve seat 2 connected to the main valve seat 1. A fixed seat 101 is fixedly installed on the outer surface of the main valve seat 1. A sealing cover plate 102 is detachably installed on the top of the fixed seat 101. The valve ball 3 is rotatably installed inside the main valve seat 1. The outer side of the valve ball 3 is rotatably sealed relative to 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 secondary valve seat 2.

[0032] 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 performance 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.

[0033] More specifically, it also includes a valve stem assembly 6, which is sleeved inside the fixed seat 101 and connected to the valve ball 3. It can control the valve ball 3 to rotate. The rotation of the valve ball 3 causes its central through hole to connect / disconnect with the main valve seat 1 / subsidiary valve seat 2. The rotation of the valve ball 3 controls the ball valve to open / close and can prevent accidental opening. When the ball valve is open, it can enhance the sealing between the valve stem assembly 6 and the fixed seat 101. It is equipped with a handle 7 on its top. By setting the valve stem assembly 6, this invention can prevent the ball valve from closing due to accidental contact, which would affect its conveying efficiency, or from opening it and causing a safety accident when personnel accidentally touch the valve stem assembly 6.

[0034] A threaded support ring 10 is threadedly connected to a fixed seat 101, and a limiting protrusion is fixed on its inner side. A compression sleeve 11 is slidably sleeved inside the threaded support ring 10 and sleeved outside the valve stem assembly 6. A groove is provided on the outer side of the compression sleeve 11 corresponding to the protrusion of the threaded support ring 10. The protrusion is placed in the groove so that the compression sleeve 11 can only slide relative to the threaded support ring 10. The upper end of the threaded support ring 10 abuts against a first elastic element 110, and its other end abuts against the compression sleeve 11.

[0035] Spiral groove 14, which is opened in the extrusion sleeve 11 inside, and its two ends bottom are opened with vertical groove 15, one end vertical groove 15 extends to the bottom of the extrusion sleeve 11, its inside is equipped with guide block 16, the guide block 16 is fixedly connected with valve stem assembly 6, through setting spiral groove 14, vertical groove 15 and guide block 16, first, it can prevent the rotation of valve stem assembly 6 caused by accidental touch, second, it can enhance the sealing between valve stem assembly 6 and fixed seat 101.

[0036] Specifically, the valve stem assembly 6 includes a first valve stem 601, one end of which is rotatably arranged in the fixed seat 101, and the other end is limitingly connected with the surface of the valve ball 3, which can drive the valve ball 3 to rotate, control the opening / closure of the valve, and the first valve stem 601 is provided with a containing groove 6011 at the top, and the inner wall of the containing groove 6011 is provided with a clamping groove 6012, and the clamping groove 6012 is provided with a clamping spring 6013; the clamping spring 6013 is arranged, so as to limit the second elastic member 605 and prevent the second elastic member 605 from being ejected from the containing groove 6011.

[0037] The first rubber sealing ring 602 is sleeved on the middle part of the first valve stem 601 and located below the fixed seat 101; the first rubber sealing ring 602 is arranged to improve the sealing between the fixed seat 101 and the first valve stem 601.

[0038] The second rubber sealing ring 603 is sleeved on the middle part of the first valve stem 601 and located on the top of the first rubber sealing ring 602, and the top of the second rubber sealing ring 603 is in contact with the bottom of the threaded support ring 10.

[0039] The second valve stem 604 is limitingly and slidably sleeved on the first valve stem 601.

[0040] The second elastic member 605 is arranged in the containing groove 6011 and used for pressing the second valve stem 604 downward.

[0041] The second elastic member 605 is arranged in the containing groove 6011 and used for pressing the second valve stem 604 downward.

[0042] It should be noted that the second elastic member 605 has a greater elastic force than the first elastic member 110, so that the bottom of the second valve stem 604 can be in contact with the containing groove 6011.

[0043] Specifically, the top of the second valve stem 604 is fixedly connected with a connecting stud 606, and the end of the connecting stud 606 is threadedly installed with a fixing nut 607 for reinforcing the handle 7, and the handle 7 is pressed on the outer side of the second valve stem 604 through the fixing nut 607.

[0044] When assembling, first, the valve ball 3 is placed in the main valve seat 1, then the second valve rod 604 is placed in the accommodating groove 6011 on the top of the first valve rod 601, then the second elastic member 605 is placed, then the snap spring 6013 is clamped in the clamping groove 6012, then the first rubber sealing ring 602 and the second rubber sealing ring 603 are sleeved on the first valve rod 601, then the first valve rod 601 is installed in the fixed seat 101, and the bottom of the first valve rod 601 is butted with the top of the valve ball 3, then the threaded support ring 10 and the first elastic member 110 are installed, then the extrusion sleeve 11 is placed, the vertical groove 15 corresponding to the lowest position of the helical groove 14 on the extrusion sleeve 11 is opposite to the guide block 16, then the extrusion sleeve 11 is sleeved on the second valve rod 604, then the sealing cover plate 102 is connected with the fixed seat 101 through the second mounting bolts, and finally the handle 7 is installed on the top of the second valve rod 604.

[0045] When it is necessary to adjust the opening and closing of the valve, first, the handle 7 is pulled upward, the upward movement of the handle 7 drives the second valve rod 604 to move upward, the guide block 16 enters the helical groove 14 from the vertical groove 15, then the handle 7 is rotated, the handle 7 releases the force for pulling the handle 7 upward in the process of rotating, under the action of the guide block 16 and the helical groove 14, the extrusion sleeve 11 slides downward, the extrusion sleeve 11 slides downward to extrude the first rubber sealing ring 602 and the second rubber sealing ring 603, so that the sealing property between the valve rod assembly 6 and the fixed seat 101 can be enhanced when the valve ball 3 is opened; after the handle 7 is rotated by ninety degrees, because another vertical groove 15 corresponds to the guide block 16, the extrusion sleeve 11 is 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 helical groove 14, the locking of the handle 7 and the valve ball 3 is completed, and the misoperation is avoided.

[0046] Because the initial position of the guide block 16 is in the vertical groove 15 of the helical groove 14, when the handle 7 is accidentally touched, the guide block 16 acts on the vertical groove 15 to give the vertical groove 15 a rotating extrusion force, so that the extrusion sleeve 11 has a rotating tendency, because the extrusion sleeve 11 is in limiting sliding connection with the threaded support ring 10, the rotation of the extrusion sleeve 11 is prevented, and the accidental touch is realized.

[0047] Embodiment two

[0048] In actual use, it is found that the fluid passing through the ball valve may contain impurities, however, the general ball valve lacks the filtering capacity for the impurities, and the existence of the impurities in the fluid may affect the quality of the final product, and the following improvements are made on the basis of the embodiment one.

[0049] Further comprising: a filter plate 4, which is rotatably arranged in the valve ball 3 and has a larger diameter than the flow channel of the valve ball 3; the filter plate 4 is arranged to filter the impurities in the fluid. Specifically, the filter plate 4 gradually thickens in the horizontal direction.

[0050] The shaft rod 5 is inserted into the sealing cover plate 102 and extends outside.

[0051] Specifically, the valve ball 3 is provided with a rotating groove matched with the filter plate 4, and the filter plate placing port 301 is arranged on the top of the valve ball 3.

[0052] The sealing cover 302 is matched with the filter plate placing port 301, and the limiting insertion hole 303 matched with the first valve rod 601 is arranged on the top of the sealing cover 302. The bottom of the shaft rod 5 is fixedly connected with the limiting boss 42 which can be inserted into the guide inclined groove 41.

[0053] The rotating cover 8 is fixedly connected with the shaft rod 5 through the connecting piece 9, and is connected with the top of the valve rod assembly 6 through the torsional spring.

[0054] It should be noted that the clamping ring is arranged on the top of the fixed seat 101 corresponding to the position of the rotating cover 8, so that the rotating cover 8 can be only rotated relative to the fixed seat 101 after being installed on the upper end of the fixed seat 101, and the problem of falling due to upward and downward sliding does not occur.

[0055] Specifically, the top of the rotating cover 8 is provided with the butt joint groove 802 matched with the limiting insertion of the connecting piece 9.

[0056] Specifically, the top of the shaft rod 5 and the bottom of the rotating cover 8 are both provided with the insertion hole matched with the torsional spring.

[0057] The top of the connecting piece 9 is connected with the top of the rotating cover 8 through the bolt.

[0058] The circumferential wall of the rotating cover 8 is provided with the through groove 801 for facilitating the installation of the handle 7.

[0059] When the impurities filtered by the filter plate 4 gradually increase and accumulate on the side with thinner thickness, the resistance increases, so that the filter plate 4 deflects to one side.

[0060] Example three

[0061] In actual use, the degree of plugging of the filter plate 4 and the opening and closing state of the valve ball 3 cannot be detected. On the basis of example two, the following improvements are made.

[0062] The second valve rod 604 comprises an adjusting section 6041 and a boss section 6042; the bottom of the adjusting section 6041 is provided with a plug-in hole 6043, the top of the boss section 6042 is placed in the plug-in hole 6043 and is fixed by a screw, and the lower end of the second elastic member 605 abuts against the boss section 6042; the middle part of the shaft rod 5 is fixedly connected with a butt boss 6044 which is placed in the plug-in hole 6043; the top of the boss section 6042 can engage with the butt boss 6044.

[0063] The corner sensor 17 is sleeved outside the rotating cover 8 and is connected with the sealing cover plate 102 by a bolt and is used for detecting the deflection angle of the rotating cover 8.

[0064] It should be noted that there is a certain height gap between the top of the boss section 6042 and the butt boss 6044, and when the top of the boss section 6042 and the bottom of the butt boss 6044 are in height coincidence, the rotation limiting of the second valve rod 604 and the shaft rod 5 can be realized, and at the same time, the height of the boss section 6042 continues to coincide with the butt boss 6044 in the process of the guiding block 16 on the outside of the second valve rod 604 sliding along the spiral groove 14, and the shaft rod 5 cannot be pushed to slide upward, so that the second valve rod 604 can drive the shaft rod 5 to rotate synchronously in the process of rotation, and the shaft rod 5 cannot be pushed to slide upward.

[0065] In use, first, the valve ball 3 is placed in the main valve seat 1, then the shaft 5 is inserted through the second valve rod 604, and the abutting boss 6044 is adjusted into the insertion hole 6043, then the end of the boss section 6042 is inserted into the insertion hole 6043, and the adjusting section 6041 is connected with the boss section 6042 by using the screw, then the second valve rod 604 is placed in the accommodating groove 6011 on the top of the first valve rod 601, then the second elastic member 605 is placed, then the snap spring 6013 is clamped into the clamping groove 6012, then the first rubber sealing ring 602 and the second rubber sealing ring 603 are sleeved on the first valve rod 601, then the first valve rod 601 is installed in the fixed seat 101, and the bottom of the first valve rod 601 is abutted with the top of the valve ball 3, then the threaded support ring 10 is installed, then the extrusion sleeve 11 is inserted, so that the vertical slot 15 corresponding to the lowest position of the helical slot 14 on the extrusion sleeve 11 is opposite to the guide block 16, then the extrusion sleeve 11 is sleeved on the second valve rod 604, then the sealing cover plate 102 is connected with the fixed seat 101 by using the second mounting bolts, the torsion spring is inserted into the insertion hole on the top of the second valve rod 604, then the rotating cover 8 is sleeved on the valve rod assembly 6, and the insertion hole on the bottom of the rotating cover 8 is inserted into the torsion spring, then the handle 7 is installed on the top of the second valve rod 604, and finally the rotating cover 8 is connected with the shaft 5 by using the connecting piece 9.

[0066] When it is needed to adjust the opening of the valve, first, the handle 7 is pulled upward, the upward movement of the handle 7 drives the second valve rod 604 to move upward, and the top of the boss section 6042 is engaged with the abutting boss 6044, so that the guide block 16 enters the helical slot 14 from the vertical slot 15, then the handle 7 is rotated, then the force for pulling the handle 7 upward is released, then the handle 7 is continuously rotated, the rotation of the handle 7 drives the extrusion sleeve 11 to slide downward under the action of the guide block 16 and the helical slot 14, and the shaft 5 is synchronously rotated with the second valve rod 604 by the abutting boss 6044, after the valve ball 3 is adjusted, the handle 7 is released, so that the abutting boss 6044 is separated from the boss section 6042, at this time, the shaft 5 can be rotated relative to the second valve rod 604, in the process, the filter plate 4 filters the dirt, and when one side of the filter plate 4 is blocked, the rotating cover 8 is rotated relative to the second valve rod 604 by the shaft 5, and the rotation angle of the rotating cover 8 is monitored by using the rotation angle sensor 17, when the rotation angle of the rotating cover 8 is greater than a first preset value, it is indicated that the filter plate 4 is seriously blocked and needs to be cleaned.

[0067] When the valve is manually adjusted to be open, the handle 7 drives the rotating cover 8 to be synchronously rotated with the valve ball 3, the rotation angle of the rotating cover 8 reaches a second preset value, and the valve is determined to be open if the valve is closed before being adjusted.

[0068] It should be noted that the second preset value is greater than the first preset value, and the second preset value is 90 degrees.

[0069] The above description is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent substitutions or changes according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

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); The filter plate (4) is rotatably mounted inside the valve ball (3); The shaft (5) is inserted into the filter plate (4) and extends to the outside of the sealing cover plate (102); The valve stem assembly (6) is sleeved outside the shaft (5) and can control the valve ball (3) to flip and prevent accidental opening. When the ball valve is opened, it can enhance the sealing between the valve stem assembly (6) and the fixed seat (101). A handle (7) is provided on its top. The rotating cover (8) is slidably connected to the shaft (5) via the connector (9) and connected to the top of the valve stem assembly (6) via a torsion spring; A threaded support ring (10) is threadedly connected to a fixed seat (101), and its upper end abuts against a first elastic element (110). A limit protrusion is fixed on the inner side of the threaded support ring (10). The extrusion sleeve (11) is slidably sleeved inside the threaded support ring (10) and sleeved outside the valve stem assembly (6). A groove is provided on the outside of the extrusion sleeve (11) corresponding to the limiting protrusion of the threaded support ring (10), and the limiting protrusion is placed in the groove. The other end of the first elastic element (110) abuts against the extrusion sleeve (11). The spiral groove (14) is opened inside the extrusion sleeve (11), and vertical grooves (15) are opened at both ends of the bottom. 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). An angle sensor (17) is fitted outside the rotating cover (8) and connected to the sealing cover (102), and is used to detect the deflection angle of the rotating cover (8); 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). A receiving groove (6011) is provided on the top of the valve stem, and a retaining groove (6012) is provided on the inner wall of the receiving groove (6011). A retaining spring (6013) is provided in the retaining groove (6012). The first rubber sealing ring (602) is sleeved in the middle of the first valve stem (601) and located inside the fixed seat (101); The second rubber sealing ring (603) is sleeved on the middle of the first valve stem (601) and located on 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); The second valve stem (604) is slidably sleeved at one end inside the first valve stem (601); The second elastic element (605) is placed in the receiving groove (6011) for pressing the second valve stem (604) downward.

2. The elliptical ball valve according to claim 1, characterized in that, The second valve stem (604) includes an adjusting section (6041) and a boss section (6042). The bottom of the adjusting section (6041) is provided with a plug hole (6043), and the top of the boss section (6042) is placed in the plug hole (6043) and fixed to the adjusting section (6041) by screws; The shaft (5) is fixedly connected to a mating boss (6044) in the middle, which is placed in the insertion hole (6043); The top of the boss section (6042) can engage with the mating boss (6044).

3. The elliptical ball valve according to claim 1, characterized in that, The top of the rotating cover (8) is provided with a mating groove (802) that is limited and inserted into the connector (9). The top of the connector (9) is connected to the top of the rotating cover (8) by bolts.

4. The elliptical ball valve according to claim 1, characterized in that, The top of the filter plate (4) is fixedly connected to a docking sleeve (40), and a guide groove (41) is provided inside it. The bottom outer side of the shaft (5) is fixedly connected to a limiting boss (42) that can be inserted into the guide groove (41).

5. The elliptical ball valve according to claim 1, characterized in that, The valve ball (3) has a filter plate placement port (301) on its top. It also includes a sealing cap (302) that is adapted to the filter plate placement port (301) and has a limiting insertion hole (303) on its top that cooperates with the first valve stem (601).

6. The elliptical ball valve according to claim 1, characterized in that, The rotating cover (8) has a through groove (801) on its side wall for easy installation of the handle (7).

7. The elliptical ball valve according to claim 1, characterized in that, The top of the second valve stem (604) is fixedly connected to a connecting stud (606), and its end is threaded with a fixing nut (607) for reinforcing the handle (7).

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

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