Safety valve components and automatic shut-off gas equipment

Abstract

The present invention provides a safety valve assembly and a gas system, which belong to the field of valves and include a fixing frame, a valve, a driving mechanism, a locking mechanism, an unlocking mechanism and a sensing mechanism. The fixing frame is connected to the ground and is used to fix other mechanisms. The valve is a ball valve, including a valve core and a valve stem. The valve stem has a first position for opening the valve core and a second position for closing the valve core. The valve can be opened or closed by pulling the valve stem through the driving mechanism. The locking mechanism is used to lock the driving mechanism so that the valve remains in an open state under normal circumstances; the sensing mechanism is used to sense severe vibration and unlock the driving mechanism through the unlocking mechanism. After unlocking, the tension spring applies a crank torque, the crank rotates and pulls the valve stem through the connecting rod to rotate 90° to the second position to close the valve. Therefore, the above-mentioned safety valve assembly and gas system can automatically close when there is severe vibration in the outside world to prevent gas leakage, thereby ensuring safety.

Description

Technical Field

[0001] The present invention relates to the field of valves, and in particular to a safety valve assembly and an automatic closing type gas equipment. Background Art

[0002] Gas equipment is widely used in factories. It uses gas pipelines to transport gas to equipment (such as boilers). Valves are important parts on gas pipelines. When equipment fails or other emergencies occur, it is necessary to close the valve in time to prevent gas leakage. For example, in a chemical plant, if chemicals explode, the valve should be closed in time; or when an earthquake occurs, the equipment may be destroyed and gas may leak. It is very important to close the valve in time. However, in an emergency, people may not have time to close the valve.

[0003] Therefore, it is of great significance to design a safety valve assembly that can close automatically. Summary of the invention

[0004] The object of the present invention is to provide a safety valve assembly which can automatically close when there is severe vibration.

[0005] The object of the present invention is to provide an automatic shut-off gas appliance, which adopts the above-mentioned safety valve assembly.

[0006] The present invention is achieved in that:

[0007] A safety valve assembly, comprising:

[0008] The valve is a ball valve, comprising a valve body, a valve core and a valve stem, wherein the valve stem is connected to the valve core; the valve core is arranged in the valve body; the valve stem is rotatably connected to the valve body, and the valve stem is connected to the valve core, and has a first position for opening the valve and a second position for closing the valve;

[0009] A fixing frame and a driving mechanism, wherein the driving mechanism comprises a crank, a connecting rod and a tension spring, wherein one end of the crank is hinged to the fixing frame, one end of the connecting rod is hinged to the free end of the crank, and the other end is hinged to one end of the valve stem;

[0010] One end of the tension spring is connected to the crank, and the other end is connected to the fixing frame; the driving mechanism can drive the valve stem to rotate from the first position to the second position;

[0011] The locking mechanism comprises a lock hook, a lever and a rotating rod, wherein the lock hook is fixedly connected to the crank, and the middle part of the lever is pivotally connected to the fixing frame and can rotate in a vertical plane; the lever comprises a first end and a second end, and the first end abuts against the lower part of the lock hook to limit the crank from rotating downward; the rotating rod is horizontally arranged at the second end of the lever and is pivotally connected to the fixing frame and can rotate in a horizontal plane; the lower part of the free end of the rotating rod abuts against the upper part of the second end of the lever to limit the second end from moving upward;

[0012] An unlocking mechanism, used to release the locking of the lever by the rotating rod, comprises a bucket, a fixed pulley and a pull rope, wherein the bucket is connected to the rotating rod through the pull rope, and the fixed pulley is rotatably connected to the fixing frame; the pull rope passes around the fixed pulley;

[0013] The induction mechanism comprises a support spring, a horizontal plate, a sphere, a conical tube and a guide tube; the support spring is arranged vertically, the lower end of the support spring is fixedly connected to the fixing frame, the conical tube is connected to the upper end of the support spring, and the horizontal plate is arranged above the conical tube; one end of the guide tube is connected to the lower part of the conical tube, and the other end of the guide tube is arranged above the bucket;

[0014] The ball is placed on the horizontal plate. When the horizontal plate vibrates, the ball can fall from the horizontal plate and then fall into the bucket. The ball and the bucket can pull the rotating rod to rotate.

[0015] further,

[0016] The horizontal plate is a circular plate, a circular hole is provided in the middle of the horizontal plate, the horizontal plate comprises a first plate and a second plate, a first connecting plate is provided at the bottom of the first plate, a second connecting plate is provided at the bottom of the second plate, and the first connecting plate and the second connecting plate are arranged relatively spaced apart;

[0017] The first connecting plate and the second connecting plate are provided with bolt holes, and the first connecting plate and the second connecting plate are connected by two bolt rods; the bolt rods pass through the bolt holes, and nuts are provided at both ends of the bolt rods;

[0018] A compression spring is arranged on the bolt rod, and the compression spring is arranged between the first connecting plate and the second connecting plate.

[0019] further,

[0020] The pivotal connection between the lever and the fixing frame is close to the crank;

[0021] The safety valve assembly further comprises an auxiliary rotation device for assisting the lever to rotate after the lever is unlocked; the auxiliary rotation device comprises a drop rod, a gear and a push rod;

[0022] The drop rod is vertically arranged below the bucket, a guide cylinder is sleeved on the drop rod, the guide cylinder is fixedly connected to the fixing frame, and the drop rod and the guide cylinder are slidably matched; the drop rod includes a first rack; a magnet is arranged at the upper end of the guide cylinder, and an iron connecting part is arranged on the drop rod, and the upper part of the iron connecting part is attracted to the lower part of the magnet; when the bucket and the ball fall, they can hit the drop rod, causing the drop rod to fall;

[0023] The push rod is vertically arranged below the lever and is slidably connected to the fixing frame, and includes a second rack; a support plate is arranged at the lower end of the push rod, and the upper end is spaced apart from the lever near one end of the rotating rod;

[0024] The gear is rotatably connected to the fixing frame, and is disposed between the first rack and the second rack, and meshes with the first rack and the second rack;

[0025] further,

[0026] A receiving member is provided on the upper part of the first rack, and the receiving member includes a conical groove, the large end of the conical groove faces upward, and a circular ring magnet is provided on the groove wall of the conical groove;

[0027] The bottom of the bucket is conical and made of iron material; the pull rope is an elastic and retractable pull rope.

[0028] further,

[0029] The drop rod also includes a guide member, which is cylindrical, connected to the first rack, and connected to the guide cylinder through a linear bearing.

[0030] further,

[0031] A limiting cylinder is also sleeved on the support spring, the bottom end of the limiting cylinder is fixedly connected to the fixing frame, and the upper end is spaced apart from the conical cylinder.

[0032] further,

[0033] The fixing frame is also provided with a cylinder, which is arranged vertically. The bucket is arranged in the cylinder and is slidably matched with the inner wall of the cylinder.

[0034] further,

[0035] The induction mechanism also includes an induction plate, which includes two vertically connected square steel plates; the induction plate is connected to the inner wall of the conical cylinder through a connecting rod.

[0036] further,

[0037] The horizontal plate is a circular plate, and a pit is arranged in the middle of the horizontal plate.

[0038] An automatic shut-off type gas device comprises a delivery pipe and the safety valve assembly, wherein the valve body is connected to the delivery pipe.

[0039] The beneficial effects of the present invention are:

[0040] The safety valve assembly and gas equipment obtained by the above design, under normal circumstances, there is a certain friction between the second end of the lever and the rotating rod, and the pulling force of the bucket on the rotating rod through the pull rope is balanced with the above friction; the ball is stationary on the horizontal plate, and the valve remains open. When there is severe vibration (for example, the explosion shock wave causes the horizontal plate to shake), the vibration of the horizontal plate causes the ball to fall from the horizontal plate and roll into the bucket along the conical tube and the guide tube. The bucket falls under the gravity of the ball and pulls the rotating rod to rotate through the pull rope, so that the connection between the rotating rod and the second end of the lever is disconnected, the lever is unlocked, and the lever can rotate freely; at this time, the crank is also unlocked. The tension spring applies a torque to the crank, the crank rotates and pulls the valve stem to rotate 90° to the second position through the connecting rod to close the valve. Therefore, the above automatic closing valve and gas equipment can automatically close when there is severe vibration in the outside world to prevent gas leakage; safety is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 is a structural schematic diagram of a safety valve assembly provided by an embodiment of the present invention;

[0043] Figure 2 It is a structural schematic diagram of an unlocking device, an auxiliary rotating device and a sensing mechanism provided by an embodiment of the present invention;

[0044] Figure 3 is a top view of a lever and a rotating rod provided by an embodiment of the present invention;

[0045] Figure 4 Is the horizontal plate in Figure 1 A bottom view structural diagram of FIG.

[0046] Figure 5 It is a schematic structural diagram of the safety valve assembly provided by an embodiment of the present invention when it is closed.

[0047] Icon: 100-safety valve assembly; 110-valve; 112-valve body; 114-valve stem; 120-fixed frame; 122-guide cylinder; 124-support plate; 1222-magnet; 130-driving mechanism; 132-crank; 134-connecting rod; 138-tension spring; 140-locking mechanism; 142-locking hook; 144-lever; 1441-first end; 1442-second end; 146-rotating rod; 150-unlocking mechanism Structure; 152-bucket; 154-fixed pulley; 160-sensing mechanism; 162-support spring; 163-limiting cylinder; 164-horizontal plate; 1641-first plate; 1642-second plate; 1643-first connecting plate; 1644-second connecting plate; 165-conical cylinder; 167-guide tube; 170-auxiliary rotating device; 172-drop rod; 1721-iron connecting part; 1724-bearing member; 173-pushing rod. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0049] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0053] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0054] In the present invention, unless otherwise clearly specified and limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being above, above, and above a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0055] Example:

[0056] like Figure 1, this embodiment provides a safety valve assembly 100, which can automatically close the valve when there is severe vibration in the outside world. The above-mentioned valve device 100 includes a fixing frame 120, a valve 110, a driving mechanism 130, a locking mechanism 140, an unlocking mechanism 150 and a sensing mechanism 160. The fixing frame 120 is connected to the ground and is used to fix the parts that need to be fixed; the valve 110 includes a valve core and a valve stem 114, and the valve 110 can be opened or closed by rotating the valve core through the driving mechanism 130. The locking mechanism 140 is used to lock the driving mechanism 130, so that the valve 110 remains in an open state under normal circumstances; the sensing mechanism 160 is used to sense severe vibration and unlock the driving mechanism 130 through the unlocking mechanism 150.

[0057] Specifically, Figure 2 The valve 110 is a ball valve, including a valve body 112, a valve core (not shown in the figure) and a valve stem 114, wherein the valve stem 114 is connected to the valve core; the valve core is arranged in the valve body 112. The valve stem 114 is rotatably connected to the valve body 112, and the valve stem 114 is connected to the valve core, and has a first position for opening the valve core, and a second position for closing the valve core. The valve stem 114 can be switched between the first position and the second position by rotating 90°. The valve 110 can directly use standard parts, so it will not be described in detail.

[0058] The fixing frame 120 includes a base and a support frame fixedly connected to the base. The support frame can be designed according to actual conditions as long as it can fix the parts that need to be fixed; for example, it can be fixed by welding with steel bars.

[0059] Please continue to refer to Figure 1 The driving mechanism 130 includes a crank 132, a connecting rod 134 and a tension spring 138. One end of the crank 132 is hinged to the fixing frame 120. When the valve 110 is opened, the crank 132 is tilted upward. One end of the connecting rod 134 is hinged to the free end of the crank 132, and the other end is hinged to the valve stem 114. One end of the tension spring 138 is connected to the crank 132, and the other end is connected to the fixing frame 120. The crank 132, the connecting rod 134, the valve stem 114 and the fixing frame 120 constitute a crank rocker mechanism. When the crank 132 rotates, it can drive the valve core to rotate 90°, thereby switching the valve from an open state to a closed state.

[0060] like Figure 1 and Figure 2In order to keep the valve 110 in a normally open state, a locking mechanism 140 is used to lock the rotation of the crank 132. The locking mechanism 140 includes a locking hook 142, a lever 144 and a rotating rod 146. The locking hook 142 is fixedly connected to the crank 132. In this embodiment, the locking hook 142 is a strip plate. The middle part of the lever 144 is pivoted to the fixing frame 120 through a horizontal axis and can rotate in a vertical plane; the lever 144 includes a first end 1441 and a second end 1442. The first end 1441 abuts against the lower part of the locking hook 142 to limit the crank 132 from rotating downward; the rotating rod 146 is horizontally arranged at the second end 1442 of the lever 144, and is pivoted to the fixing frame 120 through a vertical axis, and can rotate in a horizontal plane. The lower part of the free end of the rotating rod 146 abuts against the upper part of the second end 1442 of the lever 144, which can limit the second end 1442 from moving upward. When the rotating rod 146 rotates in the horizontal plane, since the lever 144 can only rotate in the vertical plane, as the rotating rod 146 rotates, the connection between the rotating rod 146 and the lever 144 is disconnected, and the locking of the lever 144 is released.

[0061] In order to release the lock of the driving mechanism 130, the safety valve assembly 100 is also provided with an unlocking mechanism 150, which includes a bucket 152, a fixed pulley 154 and a pull rope. The fixed pulley 154 is rotatably connected to the fixed frame 120, and its installation height is substantially the same as the height of the rotating rod 146. The pull rope passes over the fixed pulley 154, one end of which is connected to the free end of the rotating rod 146, and the other end is connected to the bucket 152 so that the bucket 152 is suspended. Under normal circumstances, the pulling force applied by the bucket 152 to the rotating rod 146 through the pull rope is balanced with the friction force on the rotating rod 146. When an object of a certain weight falls into the bucket 152, the bucket 152 can pull the rotating rod 146 to rotate so that the locking of the lever 144 is released; thereby, the locking of the driving mechanism is released.

[0062] like Figure 1 and Figure 3 In order to sense severe vibration, a sensing mechanism 160 is also provided, and the sensing mechanism 160 includes a support spring 162, a horizontal plate 164, a sphere, a conical tube 165 and a guide tube 167. The support spring 162 is vertically provided, and the lower end of the support spring 162 is fixedly connected to the fixing frame 120. The conical tube 165 is connected to the upper end of the support spring 162, and the horizontal plate 164 is provided above the conical tube 165 and connected to the inner wall of the conical tube 165. One end of the guide tube 167 is connected to the lower part of the conical tube 165, and the other end of the guide tube 167 is provided above the bucket 152.

[0063] like Figure 4, the horizontal plate 164 is a circular plate, a circular hole is provided in the middle of the horizontal plate 164, and the horizontal plate 164 includes a first plate 1641 and a second plate 1642, and the sides of the two plates are both provided with semicircular notches. A first connecting plate 1643 is provided at the bottom of the first plate 1641, and a second connecting plate 1644 is provided at the bottom of the second plate 1642. The two plates are spliced ​​to form the horizontal plate 164, and the first connecting plate 1643 and the second connecting plate 1644 are relatively spaced. Bolt holes are provided on the first connecting plate 1643 and the second connecting plate 1644, and the first connecting plate 1643 and the second connecting plate 1644 are connected by two bolt rods; the bolt rods pass through the bolt holes, and nuts are provided at both ends of the bolt rods; a compression spring is provided on the bolt rods, and the compression spring is provided between the first connecting plate 1643 and the second connecting plate 1644. By changing the distance between the first plate 1641 and the second plate 1642 , the size of the central circular hole can be changed, thereby changing the sensitivity of the sensing mechanism 160 to vibration.

[0064] In this embodiment, the horizontal axis on the lever 144 is close to the crank 132, that is, the lever arm at the left end of the lever 144 is smaller than the lever arm at the right end. Since the two ends of the lever 144 need to be balanced under normal circumstances, the above structure makes the lever arm of the second end 1442 of the lever 144 large and the pressure small in the balanced state; thereby, the maximum friction between the lever 144 and the rotating rod 146 is relatively small, and then the bucket 152 can easily pull the rotating rod 146 to rotate after the ball with a relatively small volume and mass falls into the bucket 152. The above design improves the sensitivity of the safety valve assembly 100 as a whole; and can reduce the weight of the ball, thereby reducing the impact of the ball on the bottom of the bucket 152 when it falls.

[0065] When the lever 144 is unlocked, the lock hook 142 on the crank 132 remains connected to the first end 1441 of the lever 144 for a certain period of time; the crank 132 needs to overcome the torque of the right end of the lever 144 to rotate. However, since the lever 144 has a large force arm at the right end and the center of gravity of the lever 144 is biased to the right, the crank 132 rotates slowly before the connection with the lever 144 is disconnected, which affects the closing speed of the valve 110 to a certain extent.

[0066] Therefore, in order to increase the closing speed of the valve 110, an auxiliary rotation device 170 is further provided to assist the lever 144 in rotating after the lever 144 is unlocked.

[0067] The auxiliary rotating device 170 includes a drop rod 172, a gear and a push rod 173. The drop rod 172 is vertically arranged below the bucket 152, and includes a first rack and a guide member, the guide member is cylindrical, the upper end of the guide member is connected to the first rack, and is connected to the guide cylinder 122 through a linear bearing. After the bucket 152 falls, it can fall to the upper part of the drop rod 172 and push the drop rod 172 to fall. Before the bucket 152 falls, in order to fix the drop rod 172 on the guide cylinder 122, a magnet 1222 is provided at the upper end of the guide cylinder 122, and an iron connecting part 1721 is provided on the drop rod 172, and the upper part of the iron connecting part 1721 is attracted to the lower part of the magnet 1222; when the bucket 152 and the ball fall, they can hit the drop rod 172, so that the connection between the iron connecting part 1721 and the magnet 1222 is disconnected, and the drop rod 172 falls.

[0068] The push rod 173 is vertically arranged below the lever 144 and is slidably connected to the fixing frame 120, and includes a second rack. A support plate 124 is arranged at the lower end of the push rod 173. Before the bucket 152 falls, the support plate 124 supports the push rod 173 to keep it in the initial position. The upper end of the push rod 173 is located below the end of the lever 144 close to the rotating rod 146. In addition, the upper end of the push rod 173 is spaced from the bottom of the lever 144 to prevent the push rod 173 from interfering with the unlocking of the lever 144.

[0069] The gear is rotatably connected to the fixing frame 120, and is disposed between the first rack and the second rack, and meshes with the first rack and the second rack. During the falling process of the drop rod 172, the first rack moves downward, and drives the second rack to move upward through the gear; the second rack causes the push rod 173 to move upward as a whole. During the upward movement of the push rod 173, the bottom of the lever 144 is pushed to accelerate the rotation speed of the lever 144; thereby, the first end 1441 of the lever 144 is disconnected from the crank 132 more quickly; thereby increasing the closing speed of the valve 110.

[0070] For further information, please continue to refer to Figure 3 In order to prevent the bucket 152 from deviating from the predetermined position of the drop rod 172 due to vibration when the bucket 152 falls, thereby affecting the reliability of the automatic closing valve device 100; in this embodiment, the outer wall of the bucket 152 is provided with a cylinder for guidance, and the lower end of the cylinder is arranged opposite to the upper end of the drop rod 172. In addition, a receiving member is provided on the upper part of the first rack of the drop rod 172, and the receiving member is block-shaped and includes a conical groove, the large end of the conical groove faces upward, and a circular ring magnet is provided on the groove wall of the conical groove. In addition, the bottom of the bucket 152 is conical and made of iron material; the pull rope is an elastic and retractable pull rope.

[0071] When the bucket 152 falls, it can only move along the guide cylinder 122, and when the bucket 152 collides with the receiving part, the conical bottom of the bucket 152 cooperates with the conical groove of the receiving part and is connected through the annular magnet, preventing the bucket 152 from falling from the receiving part due to collision impact. Since the pull rope is a retractable pull rope, the bucket 152 can fall further after being stretched and straightened, so that the stroke of the drop rod 172 is increased, thereby ensuring that the push rod 173 can continue to assist the lever 144 in rotating before the connection between the crank 132 and the lever 144 is disconnected.

[0072] For further information, please continue to refer to Figure 3 When the external vibration is too large, the vibration amplitude of the support spring 162 is too large, and the vibration amplitude of the conical tube 165 and the horizontal plate 164 is also too large. The guide tube 167 may deviate from the predetermined position, and the ball cannot fall into the bucket 152. Therefore, a limiting tube 163 is provided on the support spring 162, and the bottom end of the limiting tube 163 is fixedly connected to the fixing frame 120, and the upper end is spaced from the conical tube 165. The above structure can prevent the vibration amplitude of the support spring 162 from being too large, and can also prevent the limiting tube 163 from limiting the vibration of the horizontal plate 164 too high.

[0073] The working principle of the safety valve assembly 100 provided in this embodiment is as follows:

[0074] like Figure 1 , Figure 4 and Figure 5 Under normal circumstances, the crank 132 is pulled by the tension spring 138 in the direction of the arrow A ( Figure 5 ) rotation tendency. The upper part of the first end 1441 of the lever 144 abuts against the lower part of the locking hook 142 on the crank 132, and the upper part of the second end 1442 of the lever 144 abuts against the lower part of the rotating rod 146; both ends of the lever 144 are subjected to a downward force and are in a balanced state; that is, the lever 144 is locked. Since there is a certain friction between the second end 1442 of the lever 144 and the rotating rod 146, the pulling force of the bucket 152 on the rotating rod 146 through the pull rope is balanced with the above-mentioned friction. Therefore, the lever 144 is locked, and the crank 132 cannot rotate either. At this time, the valve core is in the first position, and the valve 110 remains in the open state.

[0075] When there is a severe vibration (for example, the horizontal plate 164 shakes due to the explosion shock wave), the vibration of the horizontal plate 164 causes the ball to fall from the horizontal plate 164 and roll into the bucket 152 along the conical tube 165 and the guide tube 167. The bucket 152 falls under the gravity of the ball and pulls the rotating rod 146 to rotate in the B direction through the pull rope, so that the connection between the rotating rod 146 and the second end 1442 of the lever 144 is disconnected, the lever 144 is unlocked, and the lever 144 can rotate freely; at this time, the crank 132 is also unlocked. The tension spring 138 applies a torque to the crank 132, and the push rod 173 of the auxiliary rotation device 170 pushes the lever 144 upward from the second end 1442 of the lever 144, so that the connection between the crank 132 and the first end 1441 of the lever 144 is quickly disconnected. The crank 132 rotates around the A direction and pulls the valve core to the second position through the connecting rod 134 to close the valve 110.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A safety valve assembly, characterized in that: include: The valve is a ball valve, comprising a valve body, a valve core and a valve stem, wherein the valve stem is connected to the valve core; the valve core is arranged in the valve body; the valve stem is rotatably connected to the valve body, and the valve stem is connected to the valve core, and has a first position for opening the valve and a second position for closing the valve; A fixing frame and a driving mechanism, wherein the driving mechanism comprises a crank, a connecting rod and a tension spring, wherein one end of the crank is hinged to the fixing frame, one end of the connecting rod is hinged to the free end of the crank, and the other end is hinged to one end of the valve stem; One end of the tension spring is connected to the crank, and the other end is connected to the fixing frame; the driving mechanism can drive the valve stem to rotate from the first position to the second position; The locking mechanism comprises a lock hook, a lever and a rotating rod, wherein the lock hook is fixedly connected to the crank, and the middle part of the lever is pivotally connected to the fixing frame and can rotate in a vertical plane; the lever comprises a first end and a second end, and the first end abuts against the lower part of the lock hook to limit the crank from rotating downward; the rotating rod is horizontally arranged at the second end of the lever and is pivotally connected to the fixing frame and can rotate in a horizontal plane; the lower part of the free end of the rotating rod abuts against the upper part of the second end of the lever to limit the second end from moving upward; An unlocking mechanism, used to release the locking of the lever by the rotating rod, comprises a bucket, a fixed pulley and a pull rope, wherein the bucket is connected to the rotating rod through the pull rope, and the fixed pulley is rotatably connected to the fixing frame; the pull rope passes around the fixed pulley; The induction mechanism comprises a support spring, a horizontal plate, a sphere, a conical tube and a guide tube; the support spring is arranged vertically, the lower end of the support spring is fixedly connected to the fixing frame, the conical tube is connected to the upper end of the support spring, the horizontal plate is arranged horizontally above the conical tube and connected to the conical tube; one end of the guide tube is connected to the lower part of the conical tube, and the other end of the guide tube is arranged above the bucket; The ball is placed on the horizontal plate. When the horizontal plate vibrates, the ball can fall from the horizontal plate and fall into the bucket. The ball and the bucket can pull the rotating rod to rotate. The horizontal plate is a circular plate, a circular hole is provided in the middle of the horizontal plate, the horizontal plate comprises a first plate and a second plate, a first connecting plate is provided at the bottom of the first plate, a second connecting plate is provided at the bottom of the second plate, and the first connecting plate and the second connecting plate are arranged relatively spaced apart; The first connecting plate and the second connecting plate are provided with bolt holes, and the first connecting plate and the second connecting plate are connected by two bolt rods; the bolt rods pass through the bolt holes, and nuts are provided at both ends of the bolt rods; The bolt rod is provided with a compression spring, and the compression spring is provided between the first connecting plate and the second connecting plate. The pivotal connection between the lever and the fixing frame is close to the crank; The safety valve assembly further comprises an auxiliary rotation device for assisting the lever to rotate after the lever is unlocked; the auxiliary rotation device comprises a drop rod, a gear and a push rod; The drop rod is vertically arranged below the bucket, a guide cylinder is sleeved on the drop rod, the guide cylinder is fixedly connected to the fixing frame, and the drop rod and the guide cylinder are slidably matched; the drop rod includes a first rack; a magnet is arranged at the upper end of the guide cylinder, and an iron connecting part is arranged on the drop rod, and the upper part of the iron connecting part is attracted to the lower part of the magnet; when the bucket and the ball fall, they can hit the drop rod, causing the drop rod to fall; The push rod is vertically arranged below the lever and is slidably connected to the fixing frame, and includes a second rack; a support plate is arranged at the lower end of the push rod, and the upper end is spaced apart from the lever near one end of the rotating rod; The gear is rotatably connected to the fixing frame, and is disposed between the first rack and the second rack, and meshes with the first rack and the second rack. A receiving member is provided on the upper part of the first rack, and the receiving member includes a conical groove, the large end of the conical groove faces upward, and a circular ring magnet is provided on the groove wall of the conical groove; The bottom of the bucket is conical and made of iron; the pull rope is an elastic and retractable pull rope. The drop rod further includes a guide member, which is cylindrical and connected to the first rack and to the guide cylinder via a linear bearing. The support spring is also sleeved with a limiting cylinder, the bottom end of which is fixedly connected to the fixing frame, and the upper end of which is spaced apart from the conical cylinder. The fixed frame is also provided with a cylinder, which is arranged vertically, and the bucket is arranged in the cylinder and slidably cooperates with the inner wall of the cylinder. The induction mechanism also includes an induction plate, which includes two vertically connected square steel plates; the induction plate is connected to the inner wall of the conical cylinder through a connecting rod. The horizontal plate is a circular plate, and a pit is arranged in the middle of the horizontal plate.

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