Electromagnetic control ball valve

Abstract

The utility model discloses an electromagnetic control ball valve which comprises a valve body, a valve element is arranged in the valve body, valve seats are arranged on the left side and the right side of the valve element, sealing rings are fixed to the two valve seats, compression springs are installed at the side ends of the two valve seats, a support is fixed to the top of the valve body, a valve rod is connected to the support in a rotating mode, and the bottom end of the valve rod is matched with the valve element. Sleeves are fixed in the support, first electromagnets are inserted in the two sleeves, second electromagnets are arranged on the opposite sides of the two first electromagnets, connecting rods are arranged on the inner side and the outer side of the valve rod respectively, and the other ends of the two connecting rods are hinged to the side ends of the first electromagnets respectively; a round buttress is fixed to the bottom of the valve body, a containing groove is formed in the top end of the round buttress, a round concave hole is formed in the bottom end of the valve element, a thrust bearing is installed at the containing groove, the round concave hole is formed in the top end of the thrust bearing, and a self-lubricating shaft sleeve is connected to the round buttress in a sleeved mode. The utility model can quickly respond to the opening and closing of the pipeline, is safer in a dangerous environment, and is worthy of popularization and application.

Description

Technical Field

[0001] The utility model relates to a ball valve, in particular to an electromagnetic control ball valve. Background Art

[0002] A ball valve is a valve whose opening and closing member (the ball) is driven by a valve stem and rotates around its axis. Traditional ball valves can be divided into manual ball valves and electric ball valves. Both types of ball valves have a relatively slow response speed in emergency situations, making it difficult to quickly cut off or open the pipeline. This can lead to escalating dangers in hazardous environments and hinder the rapid control of emergencies.

[0003] Chinese utility model patent CN 209469818 U discloses a ball valve, which includes a valve body, a valve core, and a valve stem. The outer wall of the valve body is provided with a convex portion, the valve core is arranged in the valve body, one end of the valve stem is connected to the valve core, and the other end passes through the convex portion. The ball valve also includes a limit cover, a locking mechanism, and a limit structure. The end of the valve stem passing through the convex portion is connected to the limit cover, and the limit cover can rotate relative to the convex portion. The limit cover is provided with a locking hole. The locking mechanism is arranged between the limit cover and the convex portion to cooperate with the locking hole; the limit structure is arranged on the convex portion to limit the rotation angle of the limit cover relative to the convex portion; when the ball valve is in the open state, the locking mechanism is staggered with the locking hole; when the ball valve is in the closed state, the locking mechanism is engaged in the locking hole to lock the limit cover; the ball valve is driven to open and close by a long handle, and the ball valve cannot be fully opened or closed very quickly in an emergency. Utility Model Content

[0004] The utility model aims to solve the above-mentioned shortcomings of the prior art and provide an electromagnetically controlled ball valve that can respond extremely quickly to the opening and closing of the pipeline, meeting the demand for rapid opening and closing response of the pipeline in special dangerous working conditions.

[0005] The utility model solves the technical problem by adopting the following technical solution: the electromagnetically controlled ball valve comprises a valve body, a valve core is arranged in the valve body, valve seats are provided on the left and right sides of the valve core and are plugged into the valve body, sealing rings are fixed on the two valve seats and match with the spherical surface of the valve core, compression springs are installed on the side ends of the two valve seats and respectively drive the two valve seats to press toward the spherical surface of the valve core, a support is fixed on the top of the valve body, a valve stem is rotatably connected to the support, the bottom end of the valve stem is matched with the valve core, and sleeves made of polytetrafluoroethylene material are fixed on the left and right sides of the support. A first electromagnet is inserted into each of the two sleeves, and a second electromagnet fixed on a support is provided on the opposite side of the two first electromagnets. Connecting rods are provided on the inner and outer sides of the valve stem respectively, and one end of the two connecting rods is hinged to the inner and outer sides and sides of the valve stem respectively, and the other ends of the two connecting rods are hinged to the side ends of the first electromagnet respectively; a circular pier is fixed to the bottom of the valve body, and a resting groove is provided on the top of the circular pier. A circular concave hole is opened at the bottom of the valve core, and a thrust bearing is installed at the resting groove. The circular concave hole is rested on the top of the thrust bearing, and a self-lubricating sleeve matching the circular concave hole is sleeved on the circular pier. The role of the valve seat, sealing ring and compression spring here is to enable the sealing ring to be pressed against the spherical surface of the valve core by the compression spring, so as to prevent the medium from leaking. Moreover, when the sealing ring is worn, the valve seat can be pressed to move by the compression spring, so as to compensate for the position of the sealing ring, thereby increasing the service life of the sealing ring and avoiding the problem of increased maintenance costs caused by frequent replacement of the sealing ring. The role of the sleeve, the first electromagnet, the second electromagnet and the connecting rod here is to drive the valve stem to rotate and thus drive the ball valve to open and close through the principle of magnetic field repulsion at the same level and attraction at different levels. This form of electromagnetic magnetic field can make the ball valve open and close with extremely fast response speed. Compared with traditional manual and electric ball valves, it has extremely fast response speed, which is very useful for emergency environments and cutting The function of the circular pier, the storage groove, the circular concave hole, the thrust bearing and the self-lubricating sleeve is to support the valve core longitudinally, so as to avoid excessive weight of the valve core acting on the sealing ring on the lower side, thereby avoiding the sealing ring on the lower side from wearing out too quickly and requiring frequent replacement, which can greatly increase the service life of the sealing ring and reduce maintenance costs. The longitudinal support of the valve core can also greatly reduce the friction resistance encountered by the valve core when it rotates, and facilitate the rapid opening and closing operation of the electromagnetically controlled ball valve. The sleeve here is made of polytetrafluoroethylene, which not only has a self-lubricating effect, but also makes the first electromagnet move more smoothly. In addition, polytetrafluoroethylene is not metal, and will not weaken the magnetic field generated by the first and second electromagnets.

[0006] To further improve the valve seat, a self-lubricating layer is provided on the outer contour of the valve seat. The function of the self-lubricating layer is to make the valve seat run more smoothly, reduce friction and avoid the occurrence of jamming.

[0007] To further improve the design, a dovetail groove is formed at the bottom of the valve seat, and a dovetail block is fixed to the valve body to fit the dovetail groove. An O-ring is installed on the dovetail block. The dovetail groove, dovetail block, and O-ring prevent the compression spring from coming into contact with the medium, thereby greatly extending the service life of the compression spring and reducing maintenance costs. The compression spring also maintains its elasticity even after long-term use.

[0008] Further improvement, the valve body includes a middle valve block, a left valve block, and a right valve block, and the left and right valve blocks are fastened to the middle valve block by fasteners. Here, the valve body is configured with a middle valve block, a left valve block, and a right valve block, which can reduce the difficulty of valve body processing and can be processed without the need for a casting process, greatly reducing costs and being more environmentally friendly (casting processes are highly polluting to the environment).

[0009] As a further improvement, a sponge layer is provided on the magnetic surface of the first electromagnet for buffering. The sponge layer serves to significantly reduce noise when the first electromagnet collides with the second electromagnet due to the strong magnetic field attracting the first and second electromagnets.

[0010] The beneficial effects of the utility model are:

[0011] 1) The function of the valve seat, sealing ring, and compression spring is to press the sealing ring against the spherical surface of the valve core through the compression spring, thereby preventing the medium from leaking. Moreover, when the sealing ring is worn, the compression spring can also press the valve seat to move, thereby compensating the position of the sealing ring, thereby increasing the service life of the sealing ring and avoiding the problem of increased maintenance costs caused by frequent replacement of the sealing ring.

[0012] 2) Through the sleeve, the first electromagnet, the second electromagnet, and the connecting rod, the valve stem can be driven to rotate based on the principle of magnetic field with the same level and different levels attracting each other, thereby driving the ball valve to open and close. This form of electromagnetic magnetic field can make the ball valve open and close with extremely fast response speed. Compared with traditional manual and electric ball valves, it has a very fast response speed and is very effective for cutting off pipelines in emergencies.

[0013] 3) The valve core can be supported longitudinally by means of circular piers, resting grooves, circular recessed holes, thrust bearings and self-lubricating sleeves, thereby preventing excessive weight of the valve core from acting on the sealing ring on the lower side, thereby preventing the sealing ring on the lower side from wearing out too quickly and requiring frequent replacement. This can greatly increase the service life of the sealing ring and reduce maintenance costs. In addition, the longitudinal support of the valve core can also greatly reduce the friction resistance encountered by the valve core during rotation, facilitating the rapid opening and closing operation of the electromagnetically controlled ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model;

[0015] Figure 2 It is a structural diagram of the utility model;

[0016] Figure 3 for Figure 2 A local enlarged view of area A;

[0017] Figure 4 for Figure 2 A local enlarged view of area B;

[0018] Figure 5 for Figure 2 CC cross-section diagram.

[0019] Explanation of the reference numerals: valve body 1, middle valve block 1-1, left valve block 1-2, right valve block 1-3, valve core 2, circular concave hole 2-1, valve seat 3, self-lubricating layer 3a, dovetail groove 3b, sealing ring 4, compression spring 5, support 6, valve stem 7, first electromagnet 8, limit block 8a, sponge layer 8-1, second electromagnet 9, connecting rod 10, circular pier 11, shelf groove 11-1, thrust bearing 12, self-lubricating sleeve 13, O-ring 14, sleeve 15. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] Referring to the accompanying drawings: This electromagnetically controlled ball valve includes a valve body 1, a valve core 2 is provided in the valve body 1, and valve seats 3 are provided on the left and right sides of the valve core 2 and are plugged into the valve body 1. A sealing ring 4 is fixed on the two valve seats 3 that cooperate with the spherical surface of the valve core 2. The side ends of the two valve seats 3 are respectively installed with compression springs 5 that drive the two valve seats 3 toward the spherical surface of the valve core 2. A support 6 is fixed on the top of the valve body 1, and a valve stem 7 is rotatably connected to the support 6. The bottom end of the valve stem 7 cooperates with the valve core 2. A sleeve 15 made of polytetrafluoroethylene material is fixed on the left and right sides of the support 6, and a first electromagnet 8 is plugged into the two sleeves 15. The two second electromagnets 8 are inserted into the sleeves 15. A second electromagnet 9 fixed to the support 6 is provided on the opposite side of an electromagnet 8, and connecting rods 10 are respectively provided on the inner and outer sides of the valve stem 7. One end of the two connecting rods 10 is hinged to the inner and outer sides and sides of the valve stem 7, and the other ends of the two connecting rods 10 are respectively hinged to the side ends of the first electromagnet 8; a circular pier 11 is fixed to the bottom of the valve body 1, and a placing groove 11-1 is provided at the top of the circular pier 11. A circular concave hole 2-1 is opened at the bottom end of the valve core 2, and a thrust bearing 12 is installed at the placing groove 11-1. The circular concave hole 2-1 is placed on the top of the thrust bearing 12, and a self-lubricating sleeve 13 that matches the circular concave hole 2-1 is sleeved on the circular pier 11.

[0023] A self-lubricating layer 3 a is provided on the outer contour of the valve seat 3 .

[0024] A dovetail groove 3b is formed at the bottom end of the valve seat 3, and a dovetail block 1a is fixed on the valve body 1 to fit in the dovetail groove 3b, with an O-ring 14 installed on the dovetail block 1a.

[0025] The valve body 1 includes a middle valve block 1-1, a left valve block 1-2 and a right valve block 1-3. The left valve block 1-2 and the right valve block 1-3 are fastened to the middle valve block 1-1 by fasteners.

[0026] A sponge layer 8 - 1 for buffering is provided on the magnetic surface of the first electromagnet 8 .

[0027] The working principle of the utility model is as follows: when the ball valve needs to be closed quickly, it is only necessary to energize the second electromagnets 9 on both sides and the first electromagnets 8 on both sides, so that the second electromagnets 9 and the first electromagnets 8 are in different levels (different magnetic levels), so that the first electromagnets 8 and the second electromagnets 9 are in a state of mutual attraction, and the first electromagnet 8 is attracted and moves toward the second electromagnet 9, and pulls the connecting rod 10, so that the valve stem 7 rotates clockwise and drives the valve core 2 to rotate. When the first electromagnet 8 moves and is attracted to the second electromagnet 9, the valve core 2 is in a fully closed state. This time is very fast, so that the pipeline can be quickly cut off. When the pipeline needs to be opened quickly, it is only necessary to energize the second electromagnets 9. The direction of the current flowing through the second electromagnet 9 is the same as that of the first electromagnet 8, so that the first electromagnet 8 and the second electromagnet 9 are in the same level (same magnetic level) state. At this time, the strong magnetic field will cause the first electromagnet 8 to move away from the second electromagnet 9 due to the same level repulsion, and push the connecting rod 10 to make the valve stem 7 rotate counterclockwise, thereby fully opening the ball valve, thereby quickly completing the opening state of the ball valve; the outer end of the sleeve 15 is fixed with a limit block 8a that limits the outward movement of the first electromagnet 8, so that the outward movement position of the first electromagnet 8 can be accurately determined, thereby accurately controlling the fully closed position of the valve core 2; here, the magnetic level conversion (i.e., the current movement direction) of the first electromagnet 8 and the second electromagnet 9 can be controlled by the single-chip microcomputer controller.

[0028] While the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. An electromagnetically controlled ball valve, comprising a valve body (1), characterized in that: A valve core (2) is provided in the valve body (1), and valve seats (3) are provided on the left and right sides of the valve core (2) and are plugged into the valve body (1). A sealing ring (4) that matches the spherical surface of the valve core (2) is fixed on the two valve seats (3), and compression springs (5) are installed on the side ends of the two valve seats (3) to respectively drive the two valve seats (3) to press toward the spherical surface of the valve core (2). A support (6) is fixed on the top of the valve body (1), and a valve stem (7) is rotatably connected to the support (6). The bottom end of the valve stem (7) matches the valve core (2). Together, sleeves (15) made of polytetrafluoroethylene material are fixed on the left and right sides of the support (6), and a first electromagnet (8) is inserted into each of the two sleeves (15). The opposite sides of the two first electromagnets (8) are provided with a second electromagnet (9) fixed on the support (6). Connecting rods (10) are provided on the inner and outer sides of the valve stem (7), and one end of the two connecting rods (10) is hinged to the inner and outer sides and the side of the valve stem (7), and the other end of the two connecting rods (10) is hinged to the side end of the first electromagnet (8). A circular buttress (11) is fixed to the bottom of the valve body (1), a placement groove (11-1) is provided at the top of the circular buttress (11), a circular concave hole (2-1) is opened at the bottom of the valve core (2), a thrust bearing (12) is installed at the placement groove (11-1), the circular concave hole (2-1) is placed on the top of the thrust bearing (12), and a self-lubricating sleeve (13) that matches the circular concave hole (2-1) is sleeved on the circular buttress (11).

2. The electromagnetically controlled ball valve according to claim 1, characterized in that: A self-lubricating layer (3a) is provided on the outer contour of the valve seat (3).

3. The electromagnetically controlled ball valve according to claim 1, characterized in that: A dovetail groove (3b) is formed at the bottom end of the valve seat (3), a dovetail block (1a) that is plugged into the dovetail groove (3b) is fixed on the valve body (1), and an O-ring (14) is installed on the dovetail block (1a).

4. The electromagnetically controlled ball valve according to claim 1, characterized in that: The valve body (1) comprises a middle valve block (1-1), a left valve block (1-2) and a right valve block (1-3); the left valve block (1-2) and the right valve block (1-3) are fastened to the middle valve block (1-1) via fasteners.

5. The electromagnetically controlled ball valve according to claim 1, characterized in that: A sponge layer (8-1) for buffering is provided on the magnetic surface of the first electromagnet (8).

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