A cap-integrated solenoid valve

Abstract

The present invention discloses a cap-integrated solenoid valve, which includes an air outlet nozzle, an electromagnet, an external air inlet nozzle of the valve, an external valve body, and a material bottle. The external air inlet nozzle of the valve is installed outside the external valve body. The air outlet nozzle is installed on the upper part of the electromagnet. The material bottle is installed at the bottom of the external valve body. A moving magnet, an intermediate valve body, a moving small iron ball, a sealing ring, and an internal air inlet nozzle of the bottle are provided between the external valve body and the material bottle. The internal air inlet nozzle of the bottle is installed inside the material bottle. The moving small iron ball is arranged between the inside of the intermediate valve body and the internal air inlet nozzle of the bottle. The intermediate valve body is sleeved on the top of the internal air inlet nozzle of the bottle. The sealing ring is arranged between the intermediate valve body and the material bottle. For the cap-integrated solenoid valve of the present invention, the present invention adopts a structure combining two valves, reduces the use of the number of solenoid valves, improves the space utilization rate while saving costs, greatly reduces the occupied space of the solenoid valve, and is applicable to various occasions with high space limitations.

Description

Technical Field

[0001] The invention relates to the field of solenoid valves, and in particular to a bottle cap integrated solenoid valve. Background Art

[0002] A gas cylinder valve refers to a valve installed on a gas cylinder to control the on-off and flow of gas. Most existing gas cylinder valves are manual two-way valves used to control the on-off of the gas circuit. In some cases, solenoid valves are also used to control the flow of gas. For example, in the measurement of oil well production in oil fields, a rotary solenoid three-way valve is used for measurement. The solenoid valve consists of an electromagnetic part and a valve body. The electromagnetic part consists of a fixed iron core, a moving iron core and a coil, and the valve body consists of a sliding intermediate valve body and a spring base. The traditional solenoid valve is generally composed of a valve body, a restoring spring, a solenoid coil, a push rod, a valve port and an armature. When the power is not on, the push rod of the solenoid valve pushes against the conical valve port under the action of the spring force, closing the valve port and keeping the solenoid valve in a normally open state. When the power is on, the magnetic force generated by the coil attracts the armature to overcome the spring force and move upward, opening the valve port. Continuous power is applied to keep the solenoid valve in an open state until the electromagnetic suction disappears when the power is off. The push rod presses the valve port again under the action of the spring force to close the valve.

[0003] From the driving aspect, the existing solenoid valve uses a mechanical spring as a restoring mechanism. If the valve is to remain open, the coil must be continuously energized so that the push rod can always press the spring, thereby keeping the valve port unobstructed. However, the mechanical spring has two major defects. First, as the number of times the solenoid valve is opened increases, the mechanical spring will inevitably fail, which is mainly manifested in the change of spring stiffness. The spring stiffness gradually decreases with the increase of its expansion and contraction times, which will cause the force of the push rod pressing the valve port to decrease, making the valve port seal unreliable. Second, the energy consumption is large, and continuous power supply is required to keep the valve open. In many cases, the valve is open for a long time, and the disadvantage of energy consumption is more significant. In addition, long-term power supply will cause serious copper loss and cause serious heating of the valve.

[0004] Structurally, the driving part of the traditional solenoid valve is separated from the fluid circuit, so the electromagnetic component will take up more space. At the same time, the driving direction is perpendicular to the fluid flow direction, which has an adverse effect on the layout of the fluid circuit. In the case of high space requirements, the use of traditional solenoid valves is greatly limited.

[0005] In terms of space utilization, the structure of the spring and the push rod is not conducive to the miniaturization of the solenoid valve. In situations where the space size requirements are high, the traditional solenoid valve is obviously not suitable. In addition, in the hydraulic or pneumatic circuit, the system often requires two valves (inlet control valve and outlet control valve) to cooperate with each other to realize its function. Therefore, the pneumatic circuit assembled with the traditional solenoid valve will consume a lot of space, making the equipment too bulky, which is not conducive to the portability and miniaturization of the equipment.

[0006] The present invention will focus on improving the above three aspects, and innovatively design the driving part, the intermediate valve body structure and the spatial layout respectively, and propose a bottle cap integrated electromagnetic double valve with a bistable structure. Summary of the Invention

[0007] The main object of the present invention is to provide a bottle cap integrated solenoid valve, which can effectively solve the technical problems in the background art.

[0008] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0009] A bottle cap integrated solenoid valve includes an air outlet nozzle, an electromagnet, an external air inlet nozzle, an external valve body, and a material bottle. The external air inlet nozzle is installed outside the external valve body. The air outlet nozzle is installed on the upper part of the electromagnet. The material bottle is installed at the bottom of the external valve body. A moving magnet, an intermediate valve body, a moving small iron ball, a sealing ring, and an internal air inlet nozzle are provided between the external valve body and the material bottle.

[0010] As a further solution of the present invention, the internal air inlet nozzle is installed inside the material bottle. The moving small iron ball is arranged between the inside of the intermediate valve body and the internal air inlet nozzle. The intermediate valve body is sleeved on the top of the internal air inlet nozzle. The sealing ring is arranged between the intermediate valve body and the material bottle.

[0011] As a further solution of the present invention, a bottleneck is installed at the top of the external valve body. An air inlet hole is opened on the outer surface of the external valve body. An air outlet hole is provided inside the bottleneck. A cylindrical hole one is opened at the top position inside the external valve body. A protrusion is provided at the edge of the inner wall of the external valve body. A thread is provided on the inner wall surface of the external valve body. The moving magnet is installed in the cylindrical hole one. The electromagnet is wound outside the bottleneck.

[0012] As a further solution of the present invention, a concave pit is opened at the edge position of the upper surface of the intermediate valve body. A communication hole is opened on the outer surface of the intermediate valve body. A sealing ring shaft is provided at the lower end of the intermediate valve body. An air vent hole is opened on the upper surface of the intermediate valve body. The number of the air vent holes is four. The four air vent holes are arranged in a circular array. An overflow groove one is opened at the center position of the upper surface of the intermediate valve body inside the four air vent holes.

[0013] As a further solution of the present invention, the concave pit and the protrusion are in a matching fit. The communication hole and the air inlet hole are horizontally aligned.

[0014] As a further solution of the present invention, the air outlet nozzle is connected to the air outlet hole. The external air inlet nozzle is connected to the air inlet hole. The external air inlet nozzle passes through the air inlet hole and abuts against the communication hole.

[0015] As a further solution of the present invention, a cylindrical hole two is opened at the top of the air inlet nozzle inside the bottle. An end face is provided at the bottom of the cylindrical hole two. An arc groove is opened at the bottom end of the cylindrical hole two inside the air inlet nozzle inside the bottle. An overflow groove two is provided outside the arc groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention adopts a bistable structure. The driving part includes an electromagnet, a moving magnet and a moving small iron ball. Among them, the driving electromagnet is used to drive the moving magnet to move up and down to control the opening and closing of the air outlet valve. In the initial state, the moving magnet and the small iron ball attract each other to form a steady state when the valve is closed. When a positive instantaneous current is applied to the coil of the driving electromagnet, the moving magnet is attracted by the electromagnet and moves away from the valve port and adheres to the cylindrical iron core of the electromagnet and is attracted by it. In this state, even if the coil is powered off, the moving magnet will stay on the cylindrical iron core to keep the valve open. And because the moving magnet moves away, the small iron ball falls due to gravity, resulting in the opening of the air inlet valve; when the valve needs to be closed, a reverse current is applied to the coil of the driving electromagnet, the moving magnet is repelled and moves downward and attracts the small iron ball to move upward to close the air inlet valve and the air outlet valve at the same time. Even after the current is removed, the moving magnet and the small iron ball can keep the valve closed by attracting each other. Therefore, the present invention can realize the long-term opening and closing of the valve without long-term power supply.

[0018] Secondly, the present invention adopts an integrated structure with an air outlet valve and a pump tube valve, which can realize the simultaneous opening and closing of the two valves. The moving annular magnet is installed in the pipeline for controlling the gas inlet and outlet in the bottle. When a positive instantaneous current is applied to the electromagnetic coil, the moving magnet will be attracted and lifted, and the pipeline for the gas in the bottle to go out is opened; when a reverse instantaneous current is applied to the electromagnetic coil, the moving magnet falls and blocks the pipeline for the gas in the bottle to go out. The iron ball is installed in the pipeline for controlling the gas outside the bottle to enter the bottle, and controls the opening and closing of the pipeline for the gas outside the bottle. And there is an interaction between the moving magnet and the iron ball. When the magnet approaches the iron ball, it will attract the iron ball, and when it moves away, the iron ball will fall under its own gravity. Through the interaction relationship among the coil, the magnet and the iron ball, the simultaneous opening and closing control of the two valves is realized, and the overall volume is reduced to the greatest extent;

[0019] Therefore, the present invention adopts a structure combining two valves, reduces the use of the number of solenoid valves, improves the space utilization rate while saving costs, greatly reduces the occupied space of the solenoid valves, and is suitable for various occasions with high space limitations.

[0020] In view of the problems of low reliability, high energy consumption and difficulty in miniaturization of traditional solenoid valves, the present invention utilizes an electromagnet, a moving magnet and a moving small iron ball to form a bistable structure, and uses a magnet to replace the combination of a mechanical spring and a push rod, which not only improves the reliability of the solenoid valve, but also reduces the energy consumption and size of the solenoid valve. In addition, a structure combining two valves is proposed, which can save manufacturing costs and the space occupied by the solenoid valve. In a microelectronic system, the present invention has great application potential. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of an integrated cap solenoid valve of the present invention;

[0022] Figure 2 is an exploded view of an integrated cap solenoid valve of the present invention;

[0023] Figure 3 is a cross-sectional view of the outer valve body of an integrated cap solenoid valve of the present invention;

[0024] Figure 4 is a cross-sectional view and a top view of the middle valve body of an integrated cap solenoid valve of the present invention;

[0025] Figure 5 is a cross-sectional view of the inner bottle air inlet nozzle of an integrated cap solenoid valve of the present invention;

[0026] Figure 6 is a cross-sectional view of the structure of an integrated cap solenoid valve of the present invention;

[0027] Figure 7 is a schematic diagram of the valve opening process of an integrated cap solenoid valve of the present invention;

[0028] Figure 8 is a schematic diagram of the valve closing process of an integrated cap solenoid valve of the present invention.

[0029] In the figure: 1, air outlet nozzle; 2, electromagnet; 3, outer valve air inlet nozzle; 4, outer valve body; 5, material bottle; 6, moving magnet; 7, middle valve body; 8, moving small iron ball; 9, sealing ring; 10, inner bottle air inlet nozzle; 41, air outlet hole; 42, air inlet hole; 43, bottleneck; 44, cylindrical hole 1; 45, protrusion; 46, thread; 71, pit; 72, communication hole; 73, sealing ring shaft; 74, ventilation hole; 75, overflow groove 1; 101, cylindrical hole 2; 102, end face; 103, arc groove; 104, overflow groove 2; I, air outlet valve; II, pump tube valve. DETAILED DESCRIPTION OF THE INVENTION

[0030] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0031] AsFigure 1-8 As shown in the figure, a bottle cap integrated solenoid valve includes an air outlet nozzle 1, an electromagnet 2, an external valve air inlet nozzle 3, an external valve body 4, and a material bottle 5. The external valve air inlet nozzle 3 is installed outside the external valve body 4. The air outlet nozzle 1 is installed on the upper part of the electromagnet 2. The material bottle 5 is installed at the bottom of the external valve body 4. A moving magnet 6, an intermediate valve body 7, a moving small iron ball 8, a sealing ring 9, and an internal bottle air inlet nozzle 10 are provided between the external valve body 4 and the material bottle 5.

[0032] The internal bottle air inlet nozzle 10 is installed inside the material bottle 5. The moving small iron ball 8 is arranged between the inside of the intermediate valve body 7 and the internal bottle air inlet nozzle 10. The intermediate valve body 7 is sleeved on the top of the internal bottle air inlet nozzle 10. The sealing ring 9 is arranged between the intermediate valve body 7 and the material bottle 5.

[0033] A bottleneck 43 is installed at the top of the external valve body 4. An air inlet hole 42 is opened on the outer surface of the external valve body 4. An air outlet hole 41 is provided inside the bottleneck 43. A cylindrical hole one 44 is opened at the top inner position of the external valve body 4. A protrusion 45 is provided at the inner wall edge of the external valve body 4. A thread 46 is opened on the inner wall surface of the external valve body 4. The moving magnet 6 is installed in the cylindrical hole one 44. The electromagnet 2 is wound around the outside of the bottleneck 43.

[0034] A pit 71 is opened at the edge position of the upper surface of the intermediate valve body 7. A communication hole 72 is opened on the outer surface of the intermediate valve body 7. A sealing ring shaft 73 is provided at the lower end of the intermediate valve body 7. A ventilation hole 74 is opened on the upper surface of the intermediate valve body 7. The number of ventilation holes 74 is four. The four ventilation holes 74 are arranged in a circular array. An overflow groove one 75 is opened at the center position of the upper surface of the intermediate valve body 7 inside the four ventilation holes 74.

[0035] The pit 71 fits and matches with the protrusion 45. The communication hole 72 is horizontally aligned with the air inlet hole 42.

[0036] The air outlet nozzle 1 is connected to the air outlet hole 41. The external valve air inlet nozzle 3 is connected to the air inlet hole 42. The external valve air inlet nozzle 3 passes through the air inlet hole 42 and abuts against the communication hole 72.

[0037] A cylindrical hole two 101 is opened at the top end of the internal bottle air inlet nozzle 10. An end face 102 is provided at the bottom of the cylindrical hole two 101. An arc groove 103 is opened at the bottom end of the cylindrical hole two 101 inside the internal bottle air inlet nozzle 10. An overflow groove two 104 is provided outside the arc groove 103.

[0038] It should be noted that, in a bottle cap integrated solenoid valve, when in use, the moving magnet 6 is installed in the hole inside the outer valve body 4, and can move axially in the hole under the action of the electromagnet 2, and is fixed by the intermediate valve body 7 below. There is a pit 71 at the top of the intermediate valve body 7, and there is a protrusion 45 at the corresponding position on the outer valve body 4. The protrusion 45 on the outer valve body 4 is embedded in the top of the intermediate valve body 7 to complete the fixation. The lower end of the intermediate valve body 7 is a cylindrical hole 44, and the moving small iron ball 8 is installed in the cylindrical hole 44. Under the action of the moving magnet 6, it can The outer valve body 4 and the material bottle 5 are connected by a thread 46 during installation, and the sealing ring 9 plays a sealing role. The air outlet nozzle 1 and the air inlet nozzle 3 outside the valve are positioned and fixed through the structure of the outer valve body 4 and the intermediate valve body 7. The air outlet hole 41 is connected to the air outlet nozzle 1, and the positioning is completed through the end face 102. The air inlet hole 42 is connected to the air inlet nozzle. The moving magnet 6 is installed in the cylindrical hole 44 and can move axially under the action of the electromagnet 2. The lower end is limited by the intermediate valve body 7, and the protrusion 45 is embedded in the pit 71 on the intermediate valve body 7 to complete the positioning. The outer valve body 4 is connected to the bottle 5 as a whole through the thread 46, and the air inlet nozzle 3 outside the valve passes through the air inlet hole 42 on the outer valve body 4 and abuts against the connecting hole 72 on the intermediate valve body 7 to complete the positioning. The sealing ring 9 is sleeved on the sealing ring shaft 73 at the lower end of the intermediate valve body 7. When the bottle is tightened, the sealing ring shaft 73 is compressed to play a sealing role. When the valve is closed, the vent hole 74 is pressed by the moving magnet 6 so that the air flow cannot be conducted. When the valve is opened, the moving magnet 6 is separated from the intermediate valve body 7. When the valve is opened, the flow groove 75 accelerates the inflow of external gas, so that the bottle The gas inside is pumped out faster. When the valve is opened, the moving small iron ball 8 will fall into the arc groove 103. At this time, the gas enters the bottle through the flow groove 104 to squeeze the gas in the bottle. The micro valve is composed of two valves. As shown in 6Ⅰ in the figure, it is the outlet valve, which is used to control the inlet and outlet of the gas in the material bottle 5. As shown in Ⅱ, it is the pump pipe valve. Since the speed of the smell diffusing out by itself is too slow, a pump is needed to flush the smell out of the bottle. The pump pipe valve is to control the on and off of the pump gas. When the two valves are opened at the same time, the gas pumped in can bring the gas in the bottle out;

[0039] The working principle diagram of the bottle cap integrated solenoid valve is as follows Figure 7 and Figure 8 As shown, Figure 7 This is the principle diagram of the valve opening process. Figure 8 This is the schematic diagram of the valve closing process. Figure 7 In the process, the valve is initially in the normally closed state. Figure 7As shown in (a), at this time, the electromagnet 2 is not energized. The moving magnet 6 is pressed against the middle valve body 7 under the action of gravity and the attraction of the moving small iron ball 8, blocking the vent hole 74. The moving small iron ball 8 is attracted by the moving magnet 6 with a force greater than its own gravity, blocking the pipeline above the bottle inlet nozzle 10. The air outlet valve I and the pump pipe valve II are both in the closed state, and the whole valve is closed. When the coil of the electromagnet 2 is energized, the moving magnet 6 is attracted upward by the magnetic force. However, the attraction of the coil of the electromagnet 2 to the moving small iron ball 8 is still greater than the gravity of the moving small iron ball 8. This is the transitional state where the air outlet valve I opens and the pump pipe valve II closes, as Figure 7 shown in (b). At this time, the gas in the bottle only diffuses out through the vent hole 74 by irregular movement, and the diffusion rate is slow. When the moving magnet 6 is completely attracted by the electromagnet 2, at this time, the gravity of the moving small iron ball 8 is greater than the attraction of the electromagnet 2, and the moving small iron ball 8 falls. At this time, both the air outlet valve I and the pump pipe valve II are in the open state, as Figure 8 shown in (c). At this time, the external pump air enters the bottle through the pump pipe valve II, pumping the gas in the bottle out. The rate at which the gas leaves the bottle is much higher than the diffusion rate, and the whole valve is in the open state. From Figure 7 (a) to Figure 7 (c) is a process of the valve changing from closed to open. It should be noted that since the moving speed of the moving magnet 6 is very fast and the movement time is in milliseconds, it can be considered that the air outlet valve I and the pump pipe valve II open simultaneously;

[0040] In Figure 8 , at the beginning, both the air outlet valve I and the pump pipe valve II are open, and the valve is in the open state, as Figure 8 shown in (a). At this time, the working state is the same as Figure 7 (c). When the reverse current is applied to the electromagnet 2, the moving magnet 6 is repelled and falls, blocking the vent hole 74. At this time, it is in the transitional state where the air outlet valve I is closed and the pump pipe valve II is open, as Figure 8 shown in (b). The gas in the bottle cannot flow out. When the moving magnet 6 falls to the bottom, the attraction of the moving magnet 6 to the moving small iron ball 8 is greater than the gravity of the moving small iron ball 8, and the moving small iron ball 8 moves upward, blocking the pump pipe valve II. At this time, both the air outlet valve I and the pump pipe valve II are blocked, and the whole valve is in the closed state. Even if the electromagnet 2 is powered off, the moving magnet 6 and the moving small iron ball 8 can still maintain a stable state of attraction, keeping the two valves closed. From Figure 8 (a) to Figure 8 (c) is a process of the valve changing from open to closed.

[0041] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A bottle cap integrated solenoid valve, characterized in that: It includes an air outlet nozzle (1), an electromagnet (2), an external air inlet nozzle (3), an external valve body (4), a material bottle (5), an air outlet valve (Ⅰ) for controlling the gas inlet and outlet of the material bottle (5), and a pump tube valve (Ⅱ) for controlling the on-off of the pump air. The air outlet valve (Ⅰ) and the pump tube valve (Ⅱ) form a micro valve. The external air inlet nozzle (3) is installed outside the external valve body (4). The air outlet nozzle (1) is installed on the upper part of the electromagnet (2). The material bottle (5) is installed at the bottom of the external valve body (4). A moving magnet (6), an intermediate valve body (7), a moving small iron ball (8), a sealing ring (9), and an internal air inlet nozzle (10) are provided between the external valve body (4) and the material bottle (5). The internal air inlet nozzle (10) is installed inside the material bottle (5). The moving small iron ball (8) is arranged between the inside of the intermediate valve body (7) and the internal air inlet nozzle (10). The intermediate valve body (7) is sleeved on the top of the internal air inlet nozzle (10). The sealing ring (9) is arranged between the intermediate valve body (7) and the material bottle (5). A bottleneck (43) is installed at the top of the external valve body (4). An air inlet hole (42) is opened on the outer surface of the external valve body (4). An air outlet hole (41) is provided inside the bottleneck (43). A cylindrical hole one (44) is opened at the top inner position of the external valve body (4). A protrusion (45) is provided at the inner wall edge of the external valve body (4). A thread (46) is opened on the inner wall surface of the external valve body (4). The moving magnet (6) is installed in the cylindrical hole one (44). The electromagnet (2) is wound outside the bottleneck (43). A pit (71) is opened at the edge position of the upper surface of the intermediate valve body (7). A communication hole (72) is opened on the outer surface of the intermediate valve body (7). A sealing ring shaft (73) is provided at the lower end of the intermediate valve body (7). A ventilation hole (74) is opened on the upper surface of the intermediate valve body (7). The number of the ventilation holes (74) is four. The four ventilation holes (74) are annularly arrayed. An overflow groove one (75) is opened at the center position of the upper surface of the intermediate valve body (7) inside the four ventilation holes (74). A cylindrical hole two (101) is opened at the top end of the internal air inlet nozzle (10). An end face (102) is provided at the bottom of the cylindrical hole two (101). An arc groove (103) is opened at the bottom end of the cylindrical hole two (101) inside the internal air inlet nozzle (10). An overflow groove two (104) is provided outside the arc groove (103). When the electromagnet (2) coil is energized, the moving magnet (6) is attracted upward by the magnetic force. However, the attraction of the electromagnet (2) coil to the moving small iron ball (8) is still greater than the self-gravity of the moving small iron ball (8). This is a transition state where the air outlet valve (Ⅰ) is opened and the pump tube valve (Ⅱ) is closed. When the electromagnet (2) is supplied with reverse current, the moving magnet (6) is repelled and falls, blocking the ventilation hole (74). At this time, it is in a transition state where the air outlet valve (Ⅰ) is closed and the pump tube valve (Ⅱ) is opened.

2. The integrated solenoid valve for bottle cap according to claim 1, characterized in that: The pit (71) and the protrusion (45) are fitted and matched. The communication hole (72) and the air inlet hole (42) are horizontally aligned.

3. The one-piece solenoid valve for bottle caps according to claim 1, characterized in that: The air outlet nozzle (1) is connected to the air outlet hole (41), the external valve air inlet nozzle (3) is connected to the air inlet hole (42), and the external valve air inlet nozzle (3) passes through the air inlet hole (42) and abuts against the communication hole (72).

Images