Torque light structure's corrugated tube seal ball valve

Abstract

The present application relates to the technical field of ball valve driving, in particular to a corrugated pipe sealed ball valve with light torque structure, which comprises a valve body, an action assembly, an auxiliary assembly and a valve rod movably installed on a valve core of the valve body, the valve rod is used for connecting a spherical valve core in the valve body, the action assembly is arranged at the top of the valve rod, through cooperation between the action assembly and the auxiliary assembly, stronger torque can be provided for the valve rod of the ball valve, the valve rod is helped to act quickly, so that quick start is realized, the opening and closing speed of the valve body is effectively improved, the required working pressure of the hydraulic pressure is reduced, the sealing cost is reduced, meanwhile, cooperating with the electromagnet in the auxiliary assembly, the valve rod can be quickly lifted, and the locking of the valve core can be realized when the valve core is completely opened, so that stability of the valve body is provided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ball valve driving, in particular to a corrugated pipe sealed ball valve with light torque structure. BACKGROUND

[0002] The corrugated pipe ball valve is often used in occasions with strict requirements for valve rod sealing, such as high vacuum occasions and nuclear industry. The corrugated pipe is used instead of or together with the stuffing box on the ordinary valve. The core of the ball valve is the spherical body in the valve core position. The spherical body can close and open the valve body. After the spherical body rotates and is lifted to a certain height, the valve body is opened. After the spherical body rotates and is lowered to a certain height, the valve body is closed and a sealing effect is formed.

[0003] The existing Chinese patent with publication number CN118009082A discloses a double-sealed pneumatic ball valve, relating to the technical field of pneumatic ball valves, which comprises a valve seat and an actuator connected above the valve seat. A valve core is rotatably arranged in the valve seat. A valve rod connected with the valve core is rotatably connected to the top of the valve seat. A box body is connected with a left end cover and a right end cover at both ends respectively. A first piston and a second piston are sealingly connected in the box body respectively. A rack is symmetrically arranged on the inner side of the first piston and the second piston. A rotating shaft is rotatably connected to the bottom of the box body. The rotating shaft is fixedly connected with the valve rod at the bottom. A gear meshing with the two racks is arranged on the top of the rotating shaft. A base is arranged on the inner side of the left end cover and the right end cover. A first air inlet unit is arranged in the base on the left end cover. A second air inlet unit is arranged in the base on the right end cover. The gas from the same gas source enters the box body through the first air inlet unit and the second air inlet unit, and the gas pressure is the same. The invention ensures that the gas pressure entering the box body is the same, and avoids the problem of inconsistent piston thrust caused by uneven gas pressure.

[0004] The above technical solution ensures that the gas pressure on both sides is the same by arranging multiple mechanical devices, thereby ensuring that the piston thrust on both sides is consistent. In the prior art, the pressure in the pipeline hinders the rotation of the ball valve core during operation. Due to the shape characteristics of the valve core, the ball valve needs to rotate quickly to achieve stable opening and closing, so it is necessary to improve the stability and working efficiency of the ball valve. SUMMARY

[0005] In view of the above shortcomings of the prior art, the present application provides a corrugated pipe sealed ball valve with light torque structure, which can effectively solve the problem of how to improve the working efficiency of the ball valve in the prior art.

[0006] To achieve the above purpose, the present application is realized by the following technical solutions:

[0007] The application provides a torque light structure's corrugated pipe sealing ball valve, which comprises a valve body, an action assembly, an auxiliary assembly and a valve rod movably installed on a valve core of the valve body, the valve rod is used for connecting a spherical valve core in the valve body, and the action assembly is arranged on the top of the valve rod.

[0008] The action assembly comprises a fixed box, two hydraulic cylinders are fixedly arranged through the fixed box on both sides, two guide pressure pipes are fixedly connected on the side wall of each hydraulic cylinder, the two guide pressure pipes on the same hydraulic cylinder are an input pipe and an output pipe respectively, a piston is slidably connected in the hydraulic cylinder, the hydraulic cylinder is divided into two spaces by the piston, and the two spaces are filled with liquid, one side of the piston is fixedly connected with a moving frame through a round rod, a bevel gear matched with the bevel gear is fixedly connected on the valve rod.

[0009] The auxiliary assembly comprises a columnar shell above the action assembly, and a communication pipe is fixedly connected between the columnar shell and the hydraulic cylinder, and the communication pipe communicates the space of the hydraulic cylinder and the space of the columnar shell.

[0010] Further, an electromagnet is fixedly connected to the inner wall of the bottom plate of the columnar shell, a magnetic force receiving disc is fixedly connected to the top end of the valve rod, the magnetic force receiving disc is subjected to the magnetic force of the electromagnet, and one end of the communication pipe is located between the electromagnet and the magnetic force receiving disc.

[0011] Further, an annular magnet is fixedly installed in the bottom of the magnetic force receiving disc, a plurality of rotating plates are obliquely and rotatably installed on the magnetic force receiving disc, and a torsional spring is arranged between the rotating plate and the magnetic force receiving disc.

[0012] Further, a plurality of fixed columns are fixedly installed on the inner wall top of the columnar shell, a plurality of limiting columns are fixedly connected to the positions of the rotating plates on the top of the magnetic force receiving disc, and the limiting columns are limited in position by the fixed columns when moving to the position above the columnar shell.

[0013] Further, sealing rubber pads are fixedly connected to the positions of the rotating plates on the top and the bottom of the magnetic force receiving disc, the top of the rotating plate has a plate structure capable of contacting the fixed column, and the bottom of the rotating plate has a force receiving magnetic strip subjected to the magnetic force of the electromagnet.

[0014] Further, a limiting frame is fixedly installed on the inner wall top and the inner wall bottom of the fixed box, and the limiting frame is used for limiting the sliding position of the moving frame.

[0015] Further, a strip magnet is slidably connected to the bottom plate of the columnar shell, the strip magnet is subjected to the magnetic force of the electromagnet, a connecting frame is fixedly connected to the bottom of the strip magnet, and an inclined block is slidably connected in the connecting frame through a spring.

[0016] Further, a slot is formed on the limiting frame at the top of the inner wall of the fixed box for the connecting frame to slide.

[0017] The technical scheme provided by the application has the following beneficial effects compared with the known prior art:

[0018] The cooperation between the action assembly and the auxiliary assembly can provide stronger torque for the valve rod of the ball valve, help the valve rod to act quickly, realize quick starting, effectively improve the opening and closing speed of the valve body, reduce the required working pressure of the hydraulic pressure, reduce the sealing cost, and cooperate with the electromagnet in the auxiliary assembly to lock the valve core when the valve core is completely opened, thereby providing stability for the valve body. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0020] Figure 1 It is an overall structural schematic diagram of the application;

[0021] Figure 2 It is an internal structural schematic diagram of the application;

[0022] Figure 3 It is a bottom view of the internal structure of the application;

[0023] Figure 4 It is an exploded view of the internal structure of the application;

[0024] Figure 5 It is a structural schematic diagram of the magnetic force receiving disc of the application;

[0025] Figure 6 It is a rotating plate schematic diagram of the application;

[0026] Figure 7 It is an exploded view of the action assembly of the application;

[0027] Figure 8 It is a structural schematic diagram of the bar magnet of the application.

[0028] The labels in the figure respectively represent: 1, valve body; 2, valve rod; 3, action assembly; 301, fixed box; 302, hydraulic cylinder; 303, pressure guide pipe; 304, piston; 305, moving frame; 306, inclined rack; 307, inclined gear; 308, limiting frame; 4, auxiliary assembly; 401, cylindrical shell; 402, electromagnet; 403, magnetic force receiving disc; 404, rotating plate; 405, limiting column; 406, fixed column; 407, communication pipe; 408, ring magnet; 409, bar magnet; 410, connecting frame; 411, inclined surface block. DETAILED DESCRIPTION

[0029] To make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0030] The present application will be further described below with reference to the embodiments.

[0031] Embodiment:

[0032] Reference Figures 1 to 8 A torque light structure corrugated pipe sealing ball valve, including valve body 1, action assembly 3, auxiliary assembly 4 and activity installation in valve body 1 valve element on valve rod 2, valve rod 2 is used for connecting the spherical valve element in valve body 1, the action assembly 3 is arranged at the top of valve rod 2;

[0033] The action assembly 3 includes fixed box 301, the fixed box 301 includes hydraulic cylinder 302 fixedly installed through both sides of fixed box 301, two hydraulic cylinders 302 are fixedly connected with two pressure guide pipes 303 on the side wall, the two pressure guide pipes 303 on the same hydraulic cylinder 302 are input pipe and output pipe respectively, the hydraulic cylinder 302 is slidably connected with piston 304, the hydraulic cylinder 302 is divided into two spaces by piston 304, and the two spaces are filled with liquid, the piston 304 is fixed with moving frame 305 on one side through a round rod, the moving frame 305 is fixedly connected with inclined rack 306, the valve rod 2 is fixedly sleeved with inclined gear 307 matched with inclined rack 306.

[0034] The auxiliary assembly 4 includes cylindrical shell 401 above the action assembly 3, the cylindrical shell 401 and the hydraulic cylinder 302 are fixedly connected with the communication pipe 407 in common, and the communication pipe 407 communicates the space of the hydraulic cylinder 302 and the space of the cylindrical shell 401.

[0035] Specifically, the bottom plate inner wall of the columnar shell 401 is fixedly connected with an electromagnet 402, the top end of the valve rod 2 is fixedly connected with a magnetic force receiving disc 403, the magnetic force receiving disc 403 is subjected to magnetic force of the electromagnet 402, and one end of the communication pipe 407 is between the electromagnet 402 and the magnetic force receiving disc 403.

[0036] The valve body 1 is connected in a pipeline, the spherical valve core of the valve body 1 has a hole for liquid flow, and a certain angle of rotation can control the opening and closing of the pipeline. When the pipeline needs to be opened, hydraulic pressure is inputted to the pressure guide pipe 303 on the hydraulic cylinder 302, the pressure is transmitted to push the piston 304 towards the valve rod 2, the meshing relationship between the bevel gear 307 and the bevel gear 306 drives the valve rod 2 to rotate, and the spherical valve core connected with the valve rod 2 rotates. The two sides of the piston 304 in the hydraulic cylinder 302 contain liquid, and the piston 304 pushes the liquid on the other side into the columnar shell 401 through the communication pipe 407 during the movement of the piston 304 towards the valve rod 2. After the liquid in the two hydraulic cylinders 302 enters the columnar shell 401, the liquid pressure quickly tends to be balanced, which helps to balance the pressure of the two pistons 304, and further balances the torque of the two bevel gears 306 meshing with the bevel gear 307, thereby providing stability for the rotation of the valve rod 2. At the same time, the electromagnet 402 is started, and the magnetic force generated by the electromagnet 402 generates repulsion on the magnetic force receiving disc 403. This part of the repulsive force makes the magnetic force receiving disc 403 move upwards, generating negative pressure between the electromagnet 402 and the magnetic force receiving disc 403, which helps to absorb the liquid squeezed out by the piston 304, thereby reducing the influence of the liquid on the other side on the piston 304 when the liquid enters through the pressure guide pipe 303. At the same time, the rapid action of the magnetic force can quickly help the liquid enter the columnar shell 401, thereby helping the piston 304 to move and improving the sensitivity of the piston 304 movement. The reason is that the transmission of hydraulic pressure is quickly transmitted when doing work, and the torque provided by the piston 304 to the bevel gear 306 through the moving frame 305 increases when the positions of the two sides of the piston 304 can provide action, thereby improving the speed of the piston 304 action. When the action is needed, the electromagnet 402 can be quickly started. When the pressure guide pipe 303 provides pressure, the liquid pressure needs to be large enough to make the piston 304 move quickly. However, a large liquid pressure will cause sealing and maintenance problems. The action of the electromagnet 402 is very sensitive under the action of current, and the magnetic force receiving disc 403 can rise a part under the condition of a large enough diameter of the columnar shell 401, thereby effectively helping the piston 304 to move quickly, and the spherical valve core can be quickly rotated to quickly open the pipeline. At the same time, the required hydraulic power does not need to be too large, and the sealing and maintenance costs can be significantly reduced.

[0037] At the same time, due to the characteristics of the ball valve, the valve rod 2 rises with the magnetic force plate 403, driving the ball valve core to rise a certain distance, realizing the opening of the pipeline, and vice versa. Through the pressure guide pipe 303, the liquid is output to the hydraulic cylinder 302, the current direction of the electromagnet 402 is changed, the electromagnet 402 generates a magnetic force opposite to the previous one, and the magnetic force plate 403 is lowered. The magnetic force plate 403 and the liquid in the electromagnet 402 return to the hydraulic cylinder 302. In this process, the piston 304 quickly resets, the valve rod 2 descends and rotates, and the ball valve core forms a seal and closes the pipeline.

[0038] It should be noted that the diameter of the cylindrical shell 401 needs to be much larger than the diameter of the hydraulic cylinder 302 to meet the requirement that the negative pressure volume formed by the short distance of the magnetic force plate 403 in the cylindrical shell 401 rising is equal to the liquid volume pushed out by the piston 304 in the hydraulic cylinder 302 on both sides, and also meet the requirement that the valve rod 2 rises a short distance.

[0039] Specifically, the bottom of the magnetic force plate 403 is fixedly installed with an annular magnet 408, a plurality of rotating plates 404 are obliquely rotatably installed on the magnetic force plate 403, a torsion spring is arranged between the rotating plate 404 and the magnetic force plate 403, a plurality of fixed columns 406 are fixedly installed on the inner wall top of the cylindrical shell 401, a plurality of limiting columns 405 are fixedly connected to the top of the magnetic force plate 403 corresponding to the position of the rotating plate 404, when the limiting column 405 moves to the position above the cylindrical shell 401, it will be limited by the fixed column 406, and the top and bottom of the magnetic force plate 403 are fixedly connected with sealing rubber pads corresponding to the position of the rotating plate 404, the top of the rotating plate 404 has a plate structure that can contact the fixed column 406, and the bottom of the rotating plate 404 has a stressed magnetic strip that is subjected to the magnetic force of the electromagnet 402.

[0040] The magnetic force receiving disc 403 is integrally stressed, and the annular magnet 408 at the bottom of the magnetic force receiving disc 403 can be lifted and lowered under the magnetic force of the electromagnet 402, and the rotating plate 404 in the inclined state can generate a rotating torque on the magnetic force receiving disc 403 under the magnetic repulsion of the electromagnet 402. When the electromagnet 402 generates a magnetic repulsion on the annular magnet 408, the magnetic force receiving disc 403 is lifted in this process, the liquid enters the hydraulic cylinder 302 through the pressure guide pipe 303, and the piston 304 is pushed by the hydraulic pressure. The time of this torque is stopped when the magnetic force receiving disc 403 is lifted to the top of the cylindrical shell 401, and the torque of the magnetic force receiving disc 403 brought by the rotating plate 404 helps the valve rod 2 to rotate, and the rotating rotating plate 404 also helps to stir the liquid between the electromagnet 402 and the magnetic force receiving disc 403, to balance the hydraulic pressure between the two pistons 304, to balance the torque of the valve rod 2, to improve the stability of the valve rod 2, and when the magnetic force receiving disc 403 is lifted to the top of the cylindrical shell 401, the fixed column 406 is clamped on the limiting column 405, limiting the rotation of the magnetic force receiving disc 403, preventing the magnetic force receiving disc 403 from rotating excessively, and the electromagnet 402 always maintains the repulsion on the whole magnetic force receiving disc 403, so that the limiting column 405 and the fixed column 406 at the top of the magnetic force receiving disc 403 are tightly attached, forming a certain locking effect, helping to fix the position of the valve core, and the rotating plate 404 will contact the inner wall of the cylindrical shell 401 and tend to be horizontal, so that the electromagnet 402 receives enough magnetic repulsion to maintain the height of the magnetic force receiving disc 403.

[0041] Specifically, the inner wall of the fixed box 301 is fixedly installed with a limiting frame 308 at the top and the bottom, and the limiting frame 308 is used to limit the sliding position of the moving frame 305.

[0042] Specifically, the bottom plate of the cylindrical shell 401 is slidably connected with a strip-shaped magnet 409, the strip-shaped magnet 409 is subjected to the magnetic force of the electromagnet 402, the bottom of the strip-shaped magnet 409 is fixedly connected with a connecting frame 410, the connecting frame 410 is slidably connected with an inclined block 411 through a spring in the connecting frame 410, and the limiting frame 308 at the top of the inner wall of the fixed box 301 is provided with a slot for the sliding of the connecting frame 410.

[0043] When the electromagnet 402 generates magnetic repulsion to the magnetic force plate 403, the electromagnet 402 also generates magnetic repulsion to the bar magnet 409, which pushes the bar magnet 409 downward, so that the connecting frame 410 below the bar magnet 409 is lowered together, and the inclined block 411 extends below the limiting frame 308. During the movement of the moving frame 305 to the valve rod 2, the moving frame 305 generates a pushing force to the bottom slope of the inclined block 411, and forces the inclined block 411 to slide upward. After the moving frame 305 completely passes below the inclined block 411, the moving frame 305 is in contact with the sidewall of the inclined block 411, and the sidewall limits the moving direction of the moving frame 305. In cooperation with the limiting column 405 and the fixed column 406, the position of the moving frame 305 is locked, that is, the position of the valve core of the valve body 1 is fixed. When it is needed to close the pipeline, the electromagnet 402 generates magnetic attraction to the bar magnet 409, so that the bar magnet 409 is attracted upward by the magnetic force plate 403. At this time, the inclined block 411 returns to above the limiting frame 308, so that it cannot be in contact with the moving frame 305, and helps the moving frame 305 to reset.

[0044] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present application.

Claims

1. A bellows-sealed ball valve with a torque-light structure, comprising a valve body (1), an actuating assembly (3), an auxiliary assembly (4), and a valve stem (2) movably mounted on a valve core of the valve body (1), the valve stem (2) being used to connect to a spherical valve core in the valve body (1), characterized in that: The action component (3) is arranged on the top of the valve stem (2); The action assembly (3) includes a fixed box (301), the fixed box (301) includes a hydraulic cylinder (302) fixedly installed on both sides of the fixed box (301), two pressure-guiding pipes (303) are fixedly connected to the side walls of the two hydraulic cylinders (302), the two pressure-guiding pipes (303) on the same hydraulic cylinder (302) are an input pipe and an output pipe respectively, a piston (304) is slidably connected in the hydraulic cylinder (302), the hydraulic cylinder (302) is divided into two spaces by the piston (304), and both spaces are filled with liquid, one side of the piston (304) is fixedly connected to a movable frame (305) through a round rod, the movable frame (305) is fixedly connected to a bevel rack (306), and the valve stem (2) is fixedly sleeved with a bevel gear (307) matching the bevel rack (306); The auxiliary component (4) includes a cylindrical housing (401) located above the action component (3), and a connecting pipe (407) is fixedly connected to and passes through the cylindrical housing (401) and the hydraulic cylinder (302), and the connecting pipe (407) connects a part of the space of the hydraulic cylinder (302) and the space of the cylindrical housing (401); The inner wall of the bottom plate of the columnar housing (401) is fixedly connected to an electromagnet (402), the top end of the valve stem (2) is fixedly connected to a magnetic force-bearing disk (403), the magnetic force-bearing disk (403) is acted upon by the magnetic force of the electromagnet (402), and one end of the connecting pipe (407) is located between the electromagnet (402) and the magnetic force-bearing disk (403); An annular magnet (408) is fixedly embedded in the bottom of the magnetic force-bearing disk (403), and a plurality of rotating plates (404) are tiltably mounted on the magnetic force-bearing disk (403), with a torsion spring being provided between the rotating plates (404) and the magnetic force-bearing disk (403).

2. The bellows-sealed ball valve with a light torque structure according to claim 1, characterized in that: A plurality of fixed columns (406) are fixedly installed on the top of the inner wall of the columnar shell (401), and a plurality of limiting columns (405) are fixedly connected to the top of the magnetic force-bearing disk (403) at a position corresponding to the rotating plate (404). When the limiting columns (405) move to a position above the columnar shell (401), the position will be restricted by the fixed columns (406).

3. The bellows-sealed ball valve with a light torque structure according to claim 2, characterized in that: The top and bottom of the magnetic force-bearing disk (403) are fixedly connected to the positions of the rotating plate (404) at positions corresponding to those of the rotating plate (404); the top of the rotating plate (404) has a plate-like structure that can contact the fixed column (406); and the bottom of the rotating plate (404) has a force-bearing magnetic strip that is acted upon by the magnetic force of the electromagnet (402).

4. The bellows-sealed ball valve with a light torque structure according to claim 3, characterized in that: Limiting frames (308) are fixedly mounted on the top and bottom of the inner wall of the fixed box (301), and the limiting frames (308) are used to limit the sliding position of the movable frame (305).

5. The bellows-sealed ball valve with a light torque structure according to claim 4, characterized in that: The bottom plate of the columnar shell (401) is slidably connected to a bar magnet (409), the bar magnet (409) is acted upon by the magnetic force of the electromagnet (402), the bottom of the bar magnet (409) is fixedly connected to a connecting frame (410), and a slope block (411) is slidably connected to the connecting frame (410) via a spring.

6. The bellows-sealed ball valve with a light torque structure according to claim 5, characterized in that: The limiting frame (308) located at the top of the inner wall of the fixed box (301) is provided with a slot for the connecting frame (410) to slide.

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