Intelligent self-closing valve

Abstract

The utility model discloses an intelligent self-closing valve which comprises a valve body and an alarm, an air outlet pipe is arranged on one side of the valve body, a magnetic valve shell is sleeved on the air outlet pipe, a coil rack is arranged in the magnetic valve shell, a coil is wound on the coil rack, the coil is connected with the alarm through a wire harness, and an annular limiting groove is arranged on the outer wall of the air outlet pipe. An inserting groove is formed between the coil frame and the limiting groove, an annular movable magnet sliding along the limiting groove is arranged on the limiting groove, a valve port seat and a sliding block are arranged in an inner hole of the air outlet pipe, the sliding block moves in the axial direction of the inner hole of the air outlet pipe in a guiding mode, the sliding block and the annular movable magnet attract each other in a magnetic mode, and after the alarm gives an alarm, the coil is controlled to be electrified to generate a magnetic field. At the moment, the annular moving magnet repels the magnetic field generated by the coil and overcomes the friction force with the slot, so that the annular moving magnet drives the magnetically attracted sliding block to block the valve port of the valve port seat. Therefore, the technical effect of automatically cutting off the fuel gas after a fire disaster occurs is achieved, and the safety of fuel gas use is improved.

Description

Technical Field

[0001] The utility model relates to a valve for gas, in particular to an intelligent self - closing valve. Background Technique

[0002] The patent of Chinese invention patent authorization announcement number CN221097588U discloses a gas self - closing valve that closes along the gas flow. Its structure includes a valve body, an air outlet pipe and an air inlet pipe are arranged on the valve body, an installation port is arranged in the middle of the valve body, and an end cover is installed at the installation port position. When the pressure is low, the guide block moves downward to the bottom of the guide groove under the influence of gravity, drives the valve plug through the hinge plate and makes the sealing ring block the valve port; when the pressure is high, the elastic diaphragm bulges upward. At this time, when the guide block moves upward and touches the limit plate, it separates from the magnetic field gasket on the elastic diaphragm and then drops to the bottom of the guide groove. At this time, the valve plug is driven through the hinge plate and the sealing ring blocks the valve port. A ball valve is configured on the air outlet pipe. In this way, self - closing is achieved in the direction of gas flow under low - pressure or high - pressure conditions, and the structure is stable and reliable, while reducing the assembly difficulty.

[0003] The defect existing in this structure is that the ball valve configured on the air outlet pipe needs to be manually closed. Once a fire occurs in the place, after the alarm is sounded, personnel are still required to close the ball valve on the air outlet pipe to cut off the gas and prevent the fire from spreading. Especially in residential areas, some residents often forget to turn off the gas and go out, resulting in a fire. In the absence of personnel, the ball valve cannot be automatically closed, leading to the continuous expansion of the fire and endangering the residential building.

[0004] Therefore, how to automatically close the gas self - closing valve after the alarm is sounded is an urgent problem to be solved. Content of the Utility Model

[0005] In order to solve the above problems, the purpose of the utility model is to provide an intelligent self - closing valve that can automatically cut off the gas after a fire occurs, so as to improve the safety of gas use.

[0006] To achieve the above object, the present utility model provides the following technical solution: An intelligent self-closing valve, comprising a valve body and an alarm. An air outlet pipe is provided on one side of the valve body. It is characterized in that: A magnetic valve housing is sleeved on the air outlet pipe. An annular coil holder is arranged inside the magnetic valve housing. A coil is wound around the coil holder. The coil is connected to the alarm through a wire harness. An annular limiting groove is arranged on the outer wall of the air outlet pipe. A slot is formed between the coil holder and the limiting groove. An annular moving magnet that slides along it is arranged on the limiting groove. The annular moving magnet is inserted into the slot for positioning. An annular valve port seat and a slider that can block the valve port seat are arranged in the inner hole of the air outlet pipe. The slider moves axially along the inner hole of the air outlet pipe. The slider is magnetically attracted to the annular moving magnet. After the alarm is triggered, the chip in the fire alarm simultaneously controls the coil to be energized to generate a magnetic field. At this time, the annular moving magnet repels the magnetic field generated by the coil and overcomes the friction force with the slot, so that the annular moving magnet disengages from the slot and drives the magnetically attracted slider to slide towards the valve port seat to block the valve port of the valve port seat.

[0007] An annular operation switch is connected to the annular moving magnet. The other end of the limiting groove away from the slot is provided with an iron core ring made of iron.

[0008] The slider includes a body magnetically attracted to the annular moving magnet and a rubber plug head. The rubber plug head is connected to the body by screws. The end of the rubber plug head is conical.

[0009] Axially arranged guide bars are arranged on the inner wall of the air outlet pipe. Guide grooves that cooperate with the guide bars are arranged on the outer wall of the body. The guide grooves cooperate with the guide bars, and the body slides axially along the guide block through the guide grooves.

[0010] The beneficial effect of the present utility model is that after a fire causes the alarm to sound, the control chip in the fire alarm simultaneously controls the coil to be energized to generate a magnetic field, so that the annular moving magnet repels the magnetic field and overcomes the friction force with the slot to slide out of the slot. At the same time, it drives the slider to move and block the valve port on the valve port seat, thus achieving the technical effect of automatically cutting off the gas after a fire, thereby improving the safety of gas use.

[0011] The following further describes the present utility model in conjunction with the drawings and specific embodiments. Description of the Drawings

[0012] Figure 1 It is a structural diagram of a specific embodiment of the present utility model;

[0013] Figure 2 It is a partial structural diagram of a specific embodiment of the present utility model. Specific Embodiments

[0014] The following is a specific description of the present utility model through embodiments, which is only used for further illustration of the present utility model and cannot be construed as a limitation of the protection scope of the present utility model.

[0015] As Figure 1 , Figure 2 shown, this embodiment discloses an intelligent self-closing valve, which includes a valve body 1 and an alarm 2. The alarm 2 is a smoke alarm, a fire alarm or other alarms. An air outlet pipe 3 is arranged on one side of the valve body 1. A magnetic valve housing 4 is sleeved on the air outlet pipe 3. An annular coil holder 5 is arranged in the magnetic valve housing 4. A coil 51 is wound on the coil holder 5. The coil is connected to the alarm 2 through a wire harness 20. An annular limiting groove 31 is arranged on the outer wall of the air outlet pipe 3. A slot 32 is formed between the coil holder 5 and the limiting groove 31. An annular moving magnet 50 that slides along the limiting groove 31 is arranged on the limiting groove 31. The annular moving magnet 50 is inserted into the slot 32 and positioned by friction. An annular valve seat 6 and a slider 7 that can block the valve seat 6 are arranged in the inner hole of the air outlet pipe 3. The slider 7 moves axially along the inner hole of the air outlet pipe 3. The slider 7 and the annular moving magnet 50 are magnetically attracted to each other. In this way, a certain friction force is generated between the annular moving magnet 50 and the limiting groove 31 under the magnetic attraction of the slider 7, so that when the annular moving magnet 50 is located in the slot 32, it can be stably ensured that it is not easy to slide randomly, and further ensure that the distance between the valve seat 6 and the slider 7 is maintained in the ventilation state. After the alarm 2 issues a fire and smoke alarm, the chip in the fire alarm simultaneously controls the coil to be energized to generate a magnetic field. At this time, the annular moving magnet 50 repels the magnetic field generated by the coil and overcomes the friction force with the slot 32, so that the annular moving magnet 50 disengages from the slot 32 and drives the magnetically attracted slider 7 to slide towards the valve seat 6 to block the valve port of the valve seat 6.

[0016] An annular operation switch 8 is connected to the annular moving magnet 50. Through this operation switch 8, the annular moving magnet 50 can be reset to the slot 32. The other end of the limiting groove 31 away from the slot 32 is provided with an iron core ring 9 made of iron. Through the iron core ring 9, when the annular moving magnet 50 moves to the other end of the limiting groove 31 after being slid out of the slot 32, a magnetic attraction positioning can be obtained, avoiding the magnet sliding to drive the slider 7 to open the valve port.

[0017] The slider 7 includes a body 71 magnetically attracted to the annular moving magnet 50 (the material of the body 71 is powder metallurgy) and a rubber plug 72. The rubber plug 72 is connected to the body 71 by screws. The end of the rubber plug 72 is conical, so that the rubber plug 72 can better block the valve port on the valve seat 6.

[0018] On the inner wall of the air outlet pipe 3, there are axially arranged guide bars. On the outer wall of the main body 71, there are guide grooves that cooperate with the guide bars for sliding. The guide grooves and the guide bars are in concave-convex guiding cooperation. The main body 71 slides axially along the guide bars through these guide grooves. Of course, a guiding frame can also be set to assist the axial guiding movement of the main body 71, so that the main body 71 can move axially stably.

[0019] Adopting the above technical solution, after the fire prompts the alarm 2 to give an alarm, the control chip in the fire alarm simultaneously controls the coil to be energized to generate a magnetic field, so that the annular moving magnet 50 is repelled by the magnetic field and slides out of the slot 32 by overcoming the friction force with the slot 32, and at the same time drives the slider 7 to move and block the valve port on the valve port seat 6, so that the function of intelligent self-closing can be realized, achieving the technical effect of automatically cutting off the gas after a fire, thereby improving the safety of gas use.

[0020] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0021] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An intelligent self-closing valve, comprising a valve body and an alarm. An air outlet pipe is arranged on one side of the valve body, and it is characterized in that: A magnetic valve housing is sleeved on the air outlet pipe. An annular coil holder is arranged inside the magnetic valve housing. A coil is wound around the coil holder. The coil is connected to an alarm through a wire harness. An annular limiting groove is arranged on the outer wall of the air outlet pipe. A slot is formed between the coil holder and the limiting groove. An annular moving magnet that slides along the limiting groove is arranged on the limiting groove. The annular moving magnet is inserted into the slot for positioning. An annular valve port seat and a slider that can block the valve port seat are arranged in the inner hole of the air outlet pipe. The slider axially guides and moves along the inner hole of the air outlet pipe. The slider is magnetically attracted to the annular moving magnet. After the alarm goes off, the chip in the fire alarm simultaneously controls the coil to be energized to generate a magnetic field. At this time, the annular moving magnet repels the magnetic field generated by the coil and overcomes the friction force with the slot, so that the annular moving magnet disengages from the slot and drives the magnetically attracted slider to slide towards the valve port seat to block the valve port of the valve port seat.

2. The intelligent self-closing valve according to claim 1, wherein: An annular operation switch is connected to the annular moving magnet. The other end of the limiting groove away from the slot is provided with an iron core ring.

3. The intelligent self-closing valve according to claim 1, characterized in that: The slider includes a body magnetically attracted to the annular moving magnet and a rubber plug head. The rubber plug head is connected to the body by screws. The end of the rubber plug head is conical.

4. The intelligent self-closing valve according to claim 3, wherein: Axially arranged guide bars are arranged on the inner wall of the air outlet pipe. Guide grooves that cooperate with the guide bars for sliding are arranged on the outer wall of the body. The guide grooves cooperate with the guide bars, and the body axially slides along the guide blocks through the guide grooves.

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