Intelligent electric safety valve
Technical Field
The utility model relates to a miniature motorised valve is an intelligent electric safety valve.
Background
The electric valve is divided into an upper part and a lower part, wherein the upper part is the electric actuator, and the lower part is the valve. The electric valve is used by matching an electric actuator with an angular travel valve, so that the on-off of the pipeline fluid is controlled within 90 degrees by rotating the valve; the straight-stroke electric actuator is matched with the straight-stroke electric valve for use, so that the valve plate moves up and down to control the on-off of the pipeline fluid. Some miniature electric valves and electric control valves exist, such as the application number 202110259786.9, the application publication number 2021.07.09, the invention name "intelligent miniature valve", which is disclosed in the Chinese patent literature; the utility model is named as 'a regulating valve with anti-rotation function', as the application number 202022617393.4 disclosed in Chinese patent literature, the granted publication date 2021.09.21; however, the valve plug structural design of the product and the like is not good enough, the monitoring structural design of the valve opening and closing states is not good enough, and the whole assembly production is inconvenient.
Disclosure of Invention
For overcoming the above-mentioned not enough, the utility model aims at providing an intelligence electric safety valve to this field, make its volume of solving current like product great, the production assembly is comparatively inconvenient, the not good enough technical problem of valve plug structural design. The purpose is realized by the following technical scheme.
The utility model provides an intelligence electric safety valve, the intervalve is equipped with the valve plug subassembly in the valve body of this relief valve, the valve plug subassembly is equipped with little valve seal subassembly, the top valve port of valve body is equipped with the blind flange, the connecting axle of valve plug subassembly stretches out the blind flange through the lifting shaft to be connected with the gear spiral cover, the gear wheel of bottom running-on department of gear spiral cover and the gear engagement of blind flange one side gear subassembly, another gear department gear shaft of gear subassembly is connected with the motor shaft of motor, the motor and the lifting shaft external diameter of blind flange are equipped with the dustcoat subassembly. The flange cover plate is characterized in that a main bushing is arranged in the middle of the top of the flange cover plate, one end, extending out of the main bushing, of the lifting shaft is provided with a roller bearing, the other end of the positioning rod extends out of the lifting shaft and is provided with magnetic steel, the magnetic steel is aligned with a magnetic induction element at one end of a switch assembly in the gear spiral sleeve, the magnetic induction element is a Hall sensor, a switch frame at the other end of the switch assembly extends out of the gear spiral sleeve and is fixed on a fixing plate of the inner support assembly above the gear spiral sleeve, the roller bearing of the positioning rod is arranged in a spiral groove in the gear spiral sleeve, and a motor and the magnetic induction element are connected with an inner circuit board of the outer cover assembly through a circuit. Therefore, when the lifting shaft of the safety valve drives the valve plug assembly to open and close the valve in place, the magnetic steel triggers one of the magnetic induction elements; meanwhile, the small valve seal assembly of the valve plug assembly plays a role of guiding, and when the air pressure of the air inlet cavity is high, the air pressure is rapidly released to the air outlet cavity.
The fixed plate of the inner support assembly is fixed at the tops of the flange cover plates of the outer gear spiral sleeve and the main bushing outer diameter of the outer cover assembly through screw sleeves, at least three screw sleeves are arranged on the fixed plate of the inner support assembly, the guide plate at the bottom of the fixed plate is sleeved in and fixed in the gear spiral sleeve, meanwhile, the roller bearing of the positioning rod passes through a kidney-shaped hole of the guide plate, a cover plate is arranged on a cover opening at the top of the outer cover assembly, and an outer cover screw at the bottom of the cover plate is inserted into the screw sleeve fixed in the inner support assembly. The above is the concrete structure and concrete connection fixed knot of dustcoat subassembly construct.
An upper center hole in the middle of a fixing plate of the inner support assembly is aligned with a lower center hole of the gear screw sleeve below and a lifting shaft in the gear screw sleeve. Thereby being convenient for the lifting shaft to extend out of the lower central hole of the gear spiral sleeve and the upper central hole of the fixed plate, and further reducing the space occupation in the outer cover component.
The big sealed pad of valve plug subassembly offsets and seals up the intervalve hole in the valve body, the big sealed centre gripping of filling up is fixed in between big clamp plate and the little clamp plate, the big sealed pad of valve plug subassembly, big clamp plate, little clamp plate is fixed in big support through the valve plug screw simultaneously, the valve plug screw stretches out little support and is connected with the connecting axle, valve plug screw external diameter between big clamp plate and the spring pad is equipped with the valve plug spring, the connecting axle is equipped with little support between the lock nut of little clamp plate and connecting axle, the flat key end of connecting axle is fixed with the flat key jogged joint of lifting shaft. The valve plug assembly and the small valve seal assembly specific structure of the valve plug assembly are convenient for connecting and assembling the connecting shaft of the valve plug assembly and the lifting shaft.
The outer diameter of the lifting shaft in the main bushing is provided with a lifting shaft spring, one end of the lifting shaft spring is abutted to a clamp spring of the outer diameter of the lifting shaft in the main bushing, the other end of the lifting shaft spring is abutted to the inner top of the main bushing, and an inner shaft sleeve is fixedly arranged on the outer diameter of the lifting shaft at the joint of the main bushing and the flange cover plate. The lift shaft spring engages the plug spring to lift the plug assembly.
The motor cover shell on the shaft side of one end of the motor is arranged on one side of the top of the flange cover plate through a motor screw, and the gear assembly is a one-way clutch gear assembly with two gears symmetrically arranged.
The utility model has reasonable structure design, convenient use, installation and production and good internal stability of the valve body; the intelligent electric safety valve is suitable for being used as an intelligent electric safety valve of a gas pipeline and is suitable for structural improvement of similar products.
Drawings
Fig. 1 is a schematic diagram of a part of the explosion structure of the present invention, and the frame part in the diagram is an enlarged structure of a gear assembly.
Fig. 2 is an exploded view of the valve plug assembly of fig. 1 and a lift shaft.
Fig. 3 is a cross-sectional view of the assembled state of fig. 1, with portion a framed.
Fig. 4 is an enlarged schematic view of a portion a of fig. 3.
Reference numbers and designations: 1. the valve comprises a valve body, 2, a large sealing gasket, 3, a valve plug assembly, 301, a valve plug screw, 302, a spring cushion, 303, a valve plug spring, 304, a large pressing plate, 305, a small pressing plate, 306, a large bracket, 307, a small sealing gasket, 308, a small bracket, 309, a locking nut, 310, a connecting shaft, 4, a flange cover plate, 5, a motor, 6, a gear assembly, 7, a switch assembly, 8, a gear spiral sleeve, 801, a spiral groove, 9, an inner bracket assembly, 901, a fixing plate, 902, a guide plate, 903, a screw sleeve, 10, a roller bearing, 11, a lifting shaft, 12, a main bushing, 13, a cover plate, 14, a housing screw, 15, a housing, 16, a lifting shaft spring, 17, magnetic steel, 18, a magnetic induction element, 19 and an inner shaft sleeve.
Detailed Description
The structure and use of the invention will now be further described with reference to the accompanying drawings. As shown in fig. 1-4, a valve plug component 3 is arranged in a middle hole in a valve body 1 of the safety valve, the valve plug component is provided with a small valve sealing component, a top valve port of the valve body is provided with a flange cover plate 4, a connecting shaft 310 of the valve plug component extends out of the flange cover plate through a lifting shaft 11 and is connected with a gear spiral sleeve 8, a gear ring at a bottom sleeve opening of the gear spiral sleeve is meshed with a gear of a gear component 6 at one side of the flange cover plate, a gear shaft at another gear of the gear component is connected with a motor shaft of a motor 5, and an outer cover component is arranged on the outer diameters of the motor of the flange cover plate and the lifting shaft. The middle of the top of the flange cover plate is provided with a main bushing 12, one end of the lifting shaft, which extends out of the main bushing and one end of the positioning rod on one side, is provided with a roller bearing 10, the other end of the positioning rod extends out of the lifting shaft and is provided with magnetic steel 17, the magnetic steel is aligned with a magnetic induction element 18 at one end of a switch component 7 in the gear spiral sleeve, the magnetic induction element is a Hall sensor, a switch bracket at the other end of the switch component extends out of the gear spiral sleeve and is fixed on a fixing plate 901 of an inner bracket component 9 above the gear spiral sleeve, the roller bearing of the positioning rod is arranged on a spiral groove 801 in the gear spiral sleeve, and a motor and the magnetic induction element are connected with an inner circuit board of the outer cover component through circuits. The fixed plate of inner support subassembly is fixed in the flange apron top of dustcoat subassembly internal gear spiral shell and main bush external diameter through screw sleeve 903, and the fixed plate of inner support subassembly is equipped with three screw sleeve at least, and the deflector 902 of fixed plate bottom embolias and is fixed in the gear spiral shell, and the gyro wheel bearing of locating lever passes through the waist shape hole of deflector, and 15 top cover mouths of dustcoat subassembly are equipped with apron 13, and the dustcoat screw 14 of apron bottom inserts the screw sleeve 903 of being fixed in the inner support subassembly. An upper center hole in the middle of a fixing plate of the inner support assembly is aligned with a lower center hole of the gear spiral sleeve below and a lifting shaft in the gear spiral sleeve.
The big sealed pad 2 of above-mentioned valve plug subassembly offsets and seals up hole in the middle of in the valve body, the big sealed centre gripping of filling up is fixed in between big clamp plate 304 and the little clamp plate 305, the big sealed pad of valve plug subassembly, big clamp plate, little clamp plate is fixed in big support 306 through valve plug screw 301 simultaneously, the valve plug screw stretches out little support 308 and is connected with the connecting axle, valve plug screw external diameter between big clamp plate and the spring pad 302 is equipped with valve plug spring 303, the connecting axle is equipped with little support 308 between the lock nut 309 of little clamp plate and connecting axle, the parallel key end of connecting axle is connected fixedly with the parallel key hole of lifting shaft. The outer diameter of the lifting shaft in the main bushing is provided with a lifting shaft spring 16, one end of the lifting shaft spring abuts against a clamp spring of the outer diameter of the lifting shaft in the main bushing, the other end of the lifting shaft spring abuts against the inner top of the main bushing, and an inner shaft sleeve 19 is fixedly arranged on the outer diameter of the lifting shaft at the joint of the main bushing and the flange cover plate. A motor cover shell at the shaft side of one end of the motor is arranged at one side of the top of the flange cover plate through a motor screw, and the gear assembly is a one-way clutch gear assembly with two symmetrically arranged gears; an O-shaped ring is arranged between the corresponding parts.
The safety valve is mainly used for pipeline gas prepayment and gas emergency cut-off valves and consists of a valve body, a valve plug component, an electric actuating mechanism, a flange cover plate, a spiral driving component, a positioning component, a one-way clutch mechanism and an outer cover component. When the valve is opened, the safety valve is driven by an electric actuator to rotate a one-way clutch mechanism, the one-way clutch mechanism drives a screw driving component to rotate, a spiral groove is formed in the screw driving component, and a roller bearing (similar to a cam mechanism) of a positioning rod is arranged in the spiral groove. The spiral drive assembly drives the lifting shaft to move upwards, and the valve plug assembly is pulled up to open the valve after elastic force of the valve plug spring and the lifting shaft spring is overcome. When the valve is closed, the electric actuating mechanism drives the one-way clutch mechanism to rotate reversely, so that the one-way clutch mechanism is not meshed with the screw driving component any more; at this moment, the spiral driving mechanism is in a free state, and the valve plug spring is in an energy storage state when the valve is opened, so that the valve plug assembly can be rapidly moved downwards by the thrust of the valve plug spring, and the valve can be rapidly closed.
The safety valve has the following specific characteristics: 1. when the air pressure of the air inlet cavity is high, the valve plug assembly can firstly open the small valve seal assembly to play a pilot role, so that the air pressure is quickly released to the air outlet cavity. 2. A spiral groove is formed in the spiral driving assembly, a roller bearing of the positioning rod is arranged in the spiral groove, and the positioning rod passes through a guide hole of the guide plate. 3. One-way clutch mechanism has first gear and second gear, and in first gear emboliaed electric actuator axle, the one-way bearing was passed to the upper end of axle, has the gear shaft in the shaft hole of second gear, and there is the gear connecting seat gear shaft upper end. 4. The outer cover component is provided with a cover plate, the side surface of the cover plate is provided with an O-shaped ring, and the outer cover is provided with the O-shaped ring. 5. There is the promotion axle in the main bushing, has O type circle on the promotion axle, has the jump ring on the promotion axle, promotes the axle spring and in the jump ring upper end. 6. The switch component is provided with a magnetic induction element, and the magnetic steel on the positioning rod is aligned with the magnetic induction element after the switch component is opened in place.