Air port opening and closing device based on electromagnetic ejection structure

Abstract

The utility model provides an air port opening and closing device based on an electromagnetic catapulting structure, which comprises an air port seat, an electromagnetic catapulting structure, an electromagnetic catapulting structure, an electromagnetic catapulting structure and an electromagnetic catapulting structure, the opening and closing seat is movably arranged relative to the air port seat so as to open or close the exhaust port; the electromagnetic ejection mechanism is connected with the opening and closing seat and drives the opening and closing seat to move through electromagnetic force; the opening and closing base is attached to the air port base in a sealed mode, the electromagnetic ejection mechanism is connected with the opening and closing base, the opening and closing base is driven by electromagnetic force to move, so that the exhaust port in the air port base is opened, strong driving force can be generated instantly through the electromagnetic ejection effect, and instant opening of the exhaust port is achieved; the device is especially suitable for being applied to the field of gas explosion to generate huge blasting force, and the blasting effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of gas explosion, in particular to a gas port opening and closing device based on an electromagnetic ejection structure. Background Art

[0002] Gas blasting is a blasting technology that uses high-pressure gas as a destructive medium. Commonly used gases include oxygen, nitrogen and acetylene. When blasting is required, by opening the valve, high-pressure gas quickly flows into the blaster, and the instantaneous gas explosion can achieve the purpose of destroying the material.

[0003] Chinese patent CN201711107401.7 discloses a steam-exploding betel nut puffing machine, comprising a steam-exploding tank and a steam generator, wherein a tray with a plurality of air holes is provided in the steam-exploding tank, the tray divides the steam-exploding tank into an upper cavity and a lower cavity, the steam generator is connected to the upper cavity and can transport high-pressure steam to the upper cavity, the upper cavity is provided with an inner barrel for placing materials, the inner barrel is provided with a plurality of air holes, the lower cavity is provided with a hydraulic cylinder, a hydraulic cover is installed at the top end of the piston rod of the hydraulic cylinder, the hydraulic cover can cover the tray upward and seal the air holes on the tray, the top of the steam-exploding tank is open and provided with a cover body, when the cover body covers the opening of the steam-exploding tank, the hydraulic cylinder drives the hydraulic cover to cover the tray or detach from the tray, so as to seal or relieve pressure on the upper cavity.

[0004] In the field of gas explosion, in order to generate a huge blasting force, the compressed high-pressure gas needs to be released instantly, that is, the gas port needs to be opened instantly. The utility model provides a device that can open the gas port instantly. Utility Model Content

[0005] The purpose of the utility model is to address the deficiencies in the prior art and provide an air port opening and closing device based on an electromagnetic ejection structure. An opening and closing seat is arranged to be sealed and fitted with an air port seat, and an electromagnetic ejection mechanism is arranged to be connected to the opening and closing seat. The opening and closing seat is driven to move by electromagnetic force, thereby opening the exhaust port on the air port seat. The electromagnetic ejection effect can generate a powerful driving force in an instant, thereby realizing the instantaneous opening of the exhaust port. The utility model is particularly suitable for use in the field of gas explosion to generate huge blasting force, and has a good blasting effect.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A gas port opening and closing device based on an electromagnetic ejection structure comprises: a gas port seat, on which an exhaust port is opened; an opening and closing seat, which is movably arranged relative to the gas port seat to open or close the exhaust port; and an electromagnetic ejection mechanism, which is connected to the opening and closing seat and drives the opening and closing seat to move by electromagnetic force.

[0008] Preferably, the electromagnetic ejection mechanism includes: a yoke, which is configured as a magnetic conductor; an electromagnetic coil, which is wound on the yoke; and a push-pull rod, which is connected to the opening and closing seat and is configured as a conductor. The electromagnetic force generated by the electromagnetic coil after being energized acts on the push-pull rod, and the push-pull rod generates eddy currents and Ampere force under the action of the magnetic field, thereby moving to push or pull the opening and closing seat.

[0009] Preferably, the push-pull rod is sleeved on the magnetic yoke.

[0010] Preferably, the magnetic yoke is made of low magnetic resistance, high strength, high temperature resistance and corrosion resistance material, including but not limited to: silicon steel; the push-pull rod is made of high conductivity, high strength, high temperature resistance and corrosion resistance material, including but not limited to: copper alloy.

[0011] Preferably, the yoke is composed of a plurality of yokes which are separately fitted and stacked; and at least the portion of the push-pull rod which is sleeved on the yoke is composed of a plurality of push-pull rods which are separately fitted and stacked.

[0012] Preferably, the magnetic yoke is configured as a closed annular rod structure.

[0013] Preferably, both ends of the opening and closing seat are connected to an electromagnetic ejection mechanism, and the two electromagnetic ejection mechanisms act on the opening and closing seat at the same time to drive the opening and closing seat to move to one side.

[0014] Preferably, it further comprises: a clamping mechanism, wherein the opening and closing seat is fitted with the air outlet seat, the opening and closing seat moves laterally to open or close the exhaust port, and the clamping mechanism acts on the opening and closing seat to make the opening and closing seat fit tightly with the air outlet seat.

[0015] Preferably, the clamping mechanism comprises: a fixed seat; and a pressure wheel assembly, wherein the pressure wheel assembly is mounted on the fixed seat and is pressed on the opening and closing seat.

[0016] Preferably, the clamping force of the pressure wheel assembly is adjustable, the opening and closing seat is composed of a plurality of opening and closing seat splits connected in sequence, and the air outlet seat is composed of a plurality of air outlet seat splits connected in sequence, and the pressure wheel assembly is correspondingly provided with a plurality of means for independently adjusting the clamping force between each group of opening and closing seat splits and the air outlet seat splits.

[0017] Preferably, the opening and closing seat and the electromagnetic ejection mechanism as well as the opening and closing seat components are connected by snap-fit ​​connections.

[0018] Preferably, the pressure wheel assembly comprises: a screw rod, which is threadedly connected to the fixed seat; and a pressure wheel, which is rotatably mounted on the end of the screw rod and is connected to the opening and closing seat in a rolling manner.

[0019] The beneficial effects of the utility model are:

[0020] (1) The utility model sets an opening and closing seat and an air port seat in a sealed fit, and sets an electromagnetic ejection mechanism connected to the opening and closing seat, which drives the opening and closing seat to move by electromagnetic force, thereby opening the exhaust port on the air port seat. The electromagnetic ejection effect of the electromagnetic ejection mechanism can instantly generate a strong driving force, so that the exhaust port can be instantly opened within milliseconds. It is particularly suitable for use in the field of gas explosion to instantly release high-pressure gas to generate huge blasting force and ensure the blasting effect;

[0021] (2) The magnetic yoke in the present invention is made of low magnetic resistance and high strength materials, which can effectively gather and guide the magnetic field and have excellent bearing capacity. For example, silicon steel is a typical high-strength and low magnetic resistance material. The selection of the push-pull rod requires consideration of the material's electrical conductivity and the effective generation of induced eddy current to generate a large induced Ampere force. In the push-pull process, the push-pull rod needs to withstand huge instantaneous forces. Therefore, high-strength materials should be selected, such as copper alloys with good electrical conductivity and high strength, to effectively withstand the push-pull force.

[0022] (3) The electromagnetic ejection mechanism in the utility model can generate high-frequency vibration when connected to alternating current, and can improve the sealing between the opening and closing seat and the air port seat through the vibration stamping effect, and can reduce the static friction between the opening and closing seat and the air port seat, so that only a smaller current and the generated electromagnetic induction force are required to achieve effective opening and closing of the exhaust hole; in addition, when dust and other impurities are generated between the opening and closing seat and the air port seat, air leakage occurs, affecting the sealing, it can also instantly generate great vibration stamping through the high-frequency vibration effect, grind and run-in the fitting surface between the opening and closing seat and the air port seat, effectively repair the air leakage and restore the sealing;

[0023] (4) The utility model provides a magnetic yoke composed of sheet-like magnetic yokes that are laminated and stacked separately, and a push-pull rod composed of sheet-like push-pull rods that are laminated and stacked separately, so that no eddy current is generated on the outside, the loss is small, and the generation of lateral force is avoided, the magnetic field interference is avoided, the magnetic field is fully concentrated, and the electromagnetic induction force is maximized;

[0024] (5) In the utility model, a clamping mechanism is provided to achieve the sealing fit between the opening and closing seat and the air port seat, and the opening and closing seat and the air port seat are provided as a split type, with one group corresponding to each other. This can better ensure the flatness of each group in terms of process, thereby better ensuring the assembly sealing, and each group is matched with a pressure wheel assembly with adjustable clamping force, which is convenient for adjusting the clamping force of each group of sealing structures, thereby better ensuring the assembly sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is an exploded view of the overall structure of the utility model;

[0027] Figure 3 It is a schematic diagram of the connection between the opening and closing seat and the electromagnetic ejection mechanism in the utility model;

[0028] Figure 4 It is a structural schematic diagram of the electromagnetic ejection mechanism in the utility model;

[0029] Figure 5 It is a structural schematic diagram of the pressing mechanism in the utility model;

[0030] Figure 6 It is a schematic diagram of the local structure of the magnetic yoke in the utility model. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0033] Embodiment 1

[0034] like Figure 1-2As shown, an air port opening and closing device based on an electromagnetic ejection structure includes: an air port seat 1, on which an exhaust port 11 is opened; an opening and closing seat 2, which is movably arranged relative to the air port seat 1 to open or close the exhaust port 11; and an electromagnetic ejection mechanism 3, which is connected to the opening and closing seat 2 and drives the opening and closing seat 2 to move by electromagnetic force.

[0035] In this embodiment, the opening and closing seat 2 is sealed and fitted with the air outlet seat 1, and an electromagnetic ejection mechanism 3 is connected to the opening and closing seat 2. The opening and closing seat 2 is driven by electromagnetic force to move and eject, thereby opening the exhaust port 11 on the air outlet seat 1. The electromagnetic ejection effect generated by the electromagnetic ejection mechanism 3 can instantly generate a powerful driving force, thereby realizing the instantaneous opening of the exhaust port 11, which is particularly suitable for use in the field of gas explosion to instantly release high-pressure gas to generate huge blasting force and ensure the blasting effect.

[0036] Preferably, the opening and closing seat 2 is arranged in close contact with the air outlet seat 1, and the opening and closing seat 2 moves laterally to open or close the exhaust port 11.

[0037] As a supplementary explanation, a non-volatile high temperature, high pressure and corrosion resistant lubricant, such as molybdenum (MoS2) lubricant, polytetrafluoroethylene (PTFE) lubricant, polyalphaolefin synthetic lubricant, etc., is applied between the opening and closing seat 2 and the air port seat 1.

[0038] As a preference, Figure 3 As shown, the electromagnetic ejection mechanism 3 includes: a yoke 31, which is configured as a magnetic conductor; an electromagnetic coil 32, which is wound on the yoke 31; and a push-pull rod 33, which is arranged close to the yoke 31 and connected to the opening and closing seat 2. The push-pull rod 33 is configured as a conductor. The electromagnetic force generated by the electromagnetic coil 32 after being energized acts on the push-pull rod 33. The push-pull rod 33 generates eddy currents and Ampere force under the action of the magnetic field, thereby moving to push or pull the opening and closing seat 2.

[0039] In this embodiment, when positive or negative direct current is instantaneously passed into the electromagnetic coil 32, a magnetic field will be generated, and the magnetic field will be transmitted to the push-pull rod 22 and generate eddy currents, forming a magnetic field that is the same or opposite to the electromagnetic coil 32, thereby generating a repulsive force or an attractive force, so that the push-pull rod 22 can push the opening and closing seat 2 or pull the opening and closing seat 2 to move to open or close the exhaust port 11.

[0040] As a supplementary explanation, an electromagnetic ejection DC generator is used to connect DC power to the electromagnetic coil 32 and gradually increase the current according to the designed time, so as to achieve the ejection effect.

[0041] Preferably, the yoke 31 is made of low magnetic resistance, high strength, high temperature resistance and corrosion resistance material, including but not limited to: silicon steel; the push-pull rod 33 is made of high conductivity, high strength, high temperature resistance and corrosion resistance material, including but not limited to: copper alloy.

[0042] In this embodiment, the yoke 31 is made of a low magnetic resistance, high strength material that can effectively gather and guide the magnetic field and has excellent bearing capacity. For example, silicon steel is a typical high-strength, low magnetic resistance material with a large magnetic flux. The selection of the push-pull rod 33 requires consideration of the material's electrical conductivity and the effective generation of induced eddy currents to generate a larger induced Ampere force. During the push-pull process, the push-pull rod 33 needs to withstand a huge instantaneous force. Therefore, a high-strength material should be selected, such as a copper alloy with good conductivity and high strength to effectively withstand the push-pull force.

[0043] In this embodiment, the opening and closing seat 2 is made of a material with strong fatigue resistance, such as titanium alloy or stainless steel. The stainless steel can be surface treated, such as polishing or nitriding, to enhance its fatigue resistance.

[0044] It is worthwhile to explain that the electromagnetic ejection mechanism 3 can generate high-frequency vibration when connected to alternating current, and the high-frequency vibration has the following effects:

[0045] Firstly, the sealing between the opening and closing seat and the air port seat can be improved through the vibration stamping action;

[0046] Secondly, since the opening and closing seat 2 is tightly fitted with the air port seat 1, the opening and closing seat 2 opens or closes the exhaust port 11 by moving sideways. When the opening and closing seat 2 wants to move sideways, it needs to overcome the huge static friction between the opening and closing seat 2 and the air port seat 1. The high-frequency vibration generated by the electromagnetic ejection mechanism 3 can reduce the static friction between the opening and closing seat 2 and the air port seat 1, so that only a smaller current and the generated electromagnetic induction force are needed to realize the effective opening and closing of the exhaust hole;

[0047] In addition, when dust and other impurities accumulate between the opening and closing seat 2 and the air port seat 1, causing air leakage and affecting the sealing, it can also be repaired through high-frequency vibration. Since the opening and closing seat 2 is under great pressure, it will produce strong vibration stamping, thereby grinding and running-in the contact surface between the opening and closing seat 2 and the air port seat 1, thereby effectively repairing the air leakage problem and restoring the sealing.

[0048] Preferably, the push-pull rod 33 is sleeved on the yoke 31 .

[0049] In this embodiment, the push-pull rod 33 is sleeved on the yoke 31 , so that the magnetic flux is larger and the force generated is larger.

[0050] It is necessary to add that, further, Figure 4 ,6 As shown, the area on the yoke 31 for the push-pull rod 33 to be slidably mounted includes an inner stainless steel core 312 and a permanent magnet A313 wrapped around the four sides of the outer ring of the stainless steel core 312. The push-pull rod 33 is provided with a square hole for being mounted on the yoke 31. Permanent magnets B332 are arranged on the four sides of the square hole. The magnetic fields of the permanent magnets A313 and B332 are in opposite directions, so that the push-pull rod 33 is suspended and mounted on the yoke 31 to reduce friction loss.

[0051] As a supplementary explanation, the permanent magnet A313 and permanent magnet B332 are made of high-temperature permanent magnetic materials, including but not limited to barium ferrite magnets (which can usually maintain good magnetic properties at temperatures above 250 degrees Celsius) and cobalt magnets (which can usually maintain good magnetic properties at temperatures above 450 degrees Celsius).

[0052] As a supplement, the sliding area of ​​the push-pull rod 33 is made of a stainless steel rod, which is welded to silicon steel, and the permanent magnet A313 is arranged around the stainless steel rod.

[0053] Embodiment 2

[0054] The components of this embodiment that are the same as or corresponding to those in the above embodiment are marked with the same reference numerals as those in the above embodiment. For the sake of simplicity, only the differences from the above embodiment are described below. The differences between this embodiment and the above embodiment are:

[0055] As a preference, Figure 3 As shown, both ends of the opening and closing seat 2 are connected to an electromagnetic ejection mechanism 3, and the two electromagnetic ejection mechanisms 3 act on the opening and closing seat 2 at the same time to drive the opening and closing seat 2 to move to one side.

[0056] In this embodiment, a group of electromagnetic ejection mechanisms 3 are connected to both ends of the opening and closing seat 2, and the two work simultaneously. When the electromagnetic ejection mechanism 3 on the left generates a pulling force on the opening and closing seat 2, the electromagnetic ejection mechanism 3 on the right generates a thrust on the opening and closing seat 2, thereby making the thrust or pulling force on the opening and closing seat 2 as a whole more stable, and the moving action more stable and reliable.

[0057] Embodiment 3

[0058] The components of this embodiment that are the same as or corresponding to those in the above embodiment are marked with the same reference numerals as those in the above embodiment. For the sake of simplicity, only the differences from the above embodiment are described below. The differences between this embodiment and the above embodiment are:

[0059] As a preference, Figure 4As shown, the yoke 31 is composed of a plurality of yoke parts 311 that are stacked together; at least the portion of the push-pull rod 33 that is sleeved on the yoke 31 is composed of a plurality of push-pull rod parts 331 that are stacked together.

[0060] In this embodiment, by arranging the magnetic yoke 31 to be composed of sheet-like magnetic yoke parts 311 that are stacked together and arranging the push-pull rod 33 to be composed of sheet-like push-pull rod parts 331 that are stacked together, no eddy current will be generated on the outside, the loss will be small, and lateral force will be avoided, magnetic field interference will be avoided, the magnetic field will be fully concentrated, and the electromagnetic induction force will be maximized.

[0061] Preferably, the magnetic yoke 31 is designed in a yoke shape and is arranged as a closed annular rod structure. The magnetic yoke is made of a magnetic conductive material, preferably silicon steel with strong magnetic conductivity.

[0062] Embodiment 4

[0063] The components of this embodiment that are the same as or corresponding to those in the above embodiment are marked with the same reference numerals as those in the above embodiment. For the sake of simplicity, only the differences from the above embodiment are described below. The differences between this embodiment and the above embodiment are:

[0064] As a preference, Figure 1 As shown, it also includes: a clamping mechanism 4, which acts on the opening and closing seat 2 to make the opening and closing seat 2 and the air port seat 1 seal and fit.

[0065] Preferably, the clamping mechanism 4 comprises: a fixed seat 41 ; a pressure wheel assembly 42 , wherein the pressure wheel assembly 42 is mounted on the fixed seat 41 , and the pressure wheel assembly 42 is pressed on the opening and closing seat 2 .

[0066] As a preference, Figure 2-3 As shown, the opening and closing seat 2 is composed of a plurality of opening and closing seat segments 21 connected in sequence, and the air outlet seat 1 is composed of a plurality of air outlet seat segments 12 connected in sequence. The clamping force of the pressure wheel assembly 42 can be adjusted and it is correspondingly provided with a plurality of means for independently adjusting the clamping force between each group of opening and closing seat segments 21 and the air outlet seat segments 12.

[0067] In this embodiment, the sealing fit between the opening and closing seat 2 and the air outlet seat 1 is achieved by setting a clamping mechanism 4, and the opening and closing seat 2 and the air outlet seat 1 are set as a split type, with one-to-one correspondence in groups, which can better ensure the flatness and running-in degree of each group without affecting each other, so that the assembly sealing can be better guaranteed in terms of process, and each group is matched with a pressure wheel assembly 42 with adjustable clamping force, which is convenient for adjusting the clamping force of each group of sealing structures, thereby better ensuring the assembly sealing.

[0068] Preferably, each air port seat split body 12 is provided with an exhaust port 11, and each opening and closing seat split body 21 opens and closes the exhaust port 11 on each air port seat split body 12 respectively, and the working sections for opening and closing the exhaust port 11 on two adjacent opening and closing seat split bodies 21 are arranged at intervals.

[0069] The pressing mechanism 4 in this embodiment is preferably made of polytetrafluoroethylene material, which is resistant to corrosion, high temperature and high pressure, and is more suitable for gas explosion working environment.

[0070] As a preference, Figure 5 As shown, the pressure wheel assembly 42 includes: a screw rod 421, which is screwed onto the fixing seat 41; and a pressure wheel 422, which is rotatably mounted on the end of the screw rod 421 and is connected to the opening and closing seat 2 in a rolling manner.

[0071] In this embodiment, the pressure value applied by the pressure wheel 422 to the opening and closing seat 2 is adjusted by rotating the screw rod 421 .

[0072] Preferably, the opening and closing seat 2 and the electromagnetic ejection mechanism 3 as well as the opening and closing seat split bodies 21 are connected by snap fasteners.

[0073] It should be noted that, in this embodiment, Figure 1-2 As shown, the air vent seat 1, the yoke 31 of the electromagnetic ejection mechanism 3 and the fixing seat 41 of the clamping mechanism 4 are all installed on the base 10 for fixing. The air vent seat 1 is arranged as a two-layer structure, which includes a first layer 101 embedded and installed on the base 10 and a second layer 102 fitted and connected to the first layer 101. The base 10 is also provided with an exhaust port 11 accordingly.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas port opening and closing device based on an electromagnetic ejection structure, characterized in that: include: An air port seat (1), wherein an exhaust port (11) is provided on the air port seat (1); an opening and closing seat (2), the opening and closing seat (2) being movably arranged relative to the air port seat (1) to open or close the air port (11); and An electromagnetic ejection mechanism (3), the electromagnetic ejection mechanism (3) being connected to the opening and closing seat (2), and driving the opening and closing seat (2) to move by electromagnetic force.

2. The gas port opening and closing device based on the electromagnetic ejection structure according to claim 1 is characterized in that: The electromagnetic ejection mechanism (3) comprises: A magnetic yoke (31), wherein the magnetic yoke (31) is configured as a magnetic conductor; an electromagnetic coil (32), the electromagnetic coil (32) being wound on the magnetic yoke (31); and A push-pull rod (33) is connected to the opening and closing seat (2). The push-pull rod (33) is configured as a conductor. The electromagnetic force generated by the electromagnetic coil (32) when energized acts on the push-pull rod (33). The push-pull rod (33) generates eddy currents and Ampere force under the action of the magnetic field, thereby moving to push or pull the opening and closing seat (2).

3. The gas port opening and closing device based on the electromagnetic ejection structure according to claim 2 is characterized in that: The magnetic yoke (31) is made of low magnetic resistance, high strength, high temperature resistance and corrosion resistance material, including: silicon steel; The push-pull rod (33) is made of a material with high conductivity, high strength, high temperature resistance and corrosion resistance, including: copper alloy.

4. The gas port opening and closing device based on the electromagnetic ejection structure according to claim 2 is characterized in that: The magnetic yoke (31) is composed of a plurality of magnetic yoke parts (311) laminated and stacked together; At least the portion of the push-pull rod (33) sleeved on the magnetic yoke (31) is composed of a plurality of push-pull rod segments (331) stacked together.

5. The gas port opening and closing device based on the electromagnetic ejection structure according to claim 2 is characterized in that: The magnetic yoke (31) is configured as a closed annular rod structure.

6. A gas port opening and closing device based on an electromagnetic ejection structure according to any one of claims 1 to 5, characterized in that: Both ends of the opening and closing seat (2) are connected to an electromagnetic ejection mechanism (3), and the two electromagnetic ejection mechanisms (3) act on the opening and closing seat (2) simultaneously to drive the opening and closing seat (2) to move toward one side.

7. A gas port opening and closing device based on an electromagnetic ejection structure according to any one of claims 1 to 5, characterized in that: Also includes: The clamping mechanism (4) is arranged to fit the opening and closing seat (2) and the air outlet seat (1), the opening and closing seat (2) moves laterally to open or close the exhaust port (11), and the clamping mechanism (4) acts on the opening and closing seat (2) to seal the opening and closing seat (2) and the air outlet seat (1).

8. The gas port opening and closing device based on the electromagnetic ejection structure according to claim 7 is characterized in that: The clamping mechanism (4) comprises: Fixed seat (41); A pressure wheel assembly (42), wherein the pressure wheel assembly (42) is mounted on the fixing seat (41), and the pressure wheel assembly (42) is pressed onto the opening and closing seat (2).

9. The gas port opening and closing device based on the electromagnetic ejection structure according to claim 8 is characterized in that: The pressing force of the pressure wheel assembly (42) can be adjusted. The opening and closing seat (2) is composed of a plurality of opening and closing seat segments (21) connected in sequence. The air outlet seat (1) is composed of a plurality of air outlet seat segments (12) connected in sequence. The pressure wheel assembly (42) is provided with a plurality of corresponding ones for independently adjusting the pressing force between each group of opening and closing seat segments (21) and the air outlet seat segments (12).

10. The gas port opening and closing device based on the electromagnetic ejection structure according to claim 9, characterized in that: The opening and closing seat (2) and the electromagnetic ejection mechanism (3) as well as the opening and closing seat split bodies (21) are all connected via snap fasteners; The pressure wheel assembly (42) comprises: a screw rod (421), the screw rod (421) being screwed onto the fixing seat (41); and A pressure wheel (422) is rotatably mounted on the end of the screw rod (421) and is connected to the opening and closing seat (2) in a rolling manner.

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