Anti-blocking air valve

Abstract

The invention discloses an anti-blocking air valve, and relates to the field of cleaning and descaling, the anti-blocking air valve comprises a valve cover and a valve seat arranged at the top of the valve cover, the outer surface of the valve cover is uniformly provided with air vents II, the top of the valve seat is uniformly provided with air vents I, and the top of the valve seat is fixedly connected with a cover plate; the top of the cover plate is fixedly connected with a protective shell; the lift limiting mechanism is used for controlling gas flow of the gas valve; the screw mechanism and the nut are arranged at the top of the screw mechanism, and the screw mechanism is used for providing power for the lift limiting mechanism; the protective shell is used for protecting the nut and the screw rod mechanism from falling off when the nut and the screw rod mechanism are fixed in a matched working mode, the valve plate is arranged between the lift limiting mechanism and the valve cover, the bottom of the sealing cover is of an annular molded surface valve structure, the impurity resistance of the air valve is improved, impurities are not prone to being attached, and meanwhile the corrosion resistance of the high-nickel alloy spring is also improved.

Description

Technical Field

[0001] The invention relates to the technical field of cleaning and descaling, in particular to an anti-clogging air valve. Background Art

[0002] The air valve is a component in the compressor that is used to control the flow of gas in and out of the cylinder. It is mainly composed of a valve seat, a valve plate, a spring and a lift limiter. The lift height or closure between the valve plate and the valve seat determines the size and airtightness of the gas channel. The spring is mainly used to push the valve plate to close, and can also reduce the impact of the valve plate and the lift limiter when the valve plate is opened. The lift limiter can limit the lift of the valve plate and can support the spring; the opening and closing of the air valve plate is controlled by the pressure difference between the gas inside and outside the cylinder and the spring force, and no other driving mechanism is required, so it is called an automatic valve. The air valve is an important component in the reciprocating piston compressor and is also one of the most easily damaged components. Its quality directly affects the exhaust volume, power consumption and operational reliability of the compressor. In the stage when the compressor is developing towards high speed, one of the key issues to limit the increase in speed is the air valve;

[0003] When the air valve is installed at the exhaust part of the car, the main reasons for the failure of the air valve due to dust and stains in the exhaust gas of the car are as follows:

[0004] 1. There are many sticky substances attached to the surface of the valve seat and lift limiter, especially when attached to the valve plate guide, which will cause the valve plate to get stuck and swell;

[0005] 2. If the spring breaks, consider whether it is caused by corrosion from acidic liquid saturated with water. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention solves the technical problems by adopting the following technical solution: an anti-clogging gas valve according to the present invention comprises:

[0007] A valve cover, and a valve seat arranged on the top of the valve cover, the outer surface of the valve cover is evenly provided with a second vent, the top of the valve seat is evenly provided with a first vent, the top of the valve seat is fixedly connected with a cover plate, and the top of the cover plate is fixedly connected with a protective shell;

[0008] A lift limiting mechanism, the lift limiting mechanism is used to control the gas flow of the gas valve;

[0009] A screw mechanism, and a nut disposed on the top of the screw mechanism, wherein the screw mechanism is used to provide power to the lift limiting mechanism;

[0010] The protective shell is used to protect the nut and the screw mechanism from falling off when they are working together and fixed, and the valve plate is arranged between the lift limiting mechanism and the valve cover;

[0011] The lift limiting mechanism includes a limiting shell, a dirt storage groove is provided at the bottom of the limiting shell, a high-nickel alloy spring is fixedly connected to the inner wall of the limiting shell, a sealing cover is fixedly connected to the top of the high-nickel alloy spring, the bottom of the sealing cover is an arc-shaped design, the inner wall of the limiting shell is symmetrically provided with an anti-blocking mechanism, the anti-blocking mechanism is arranged inside the limiting shell, the outer surface of the limiting shell is slidably connected with a cleaning mechanism, the outer surface of the limiting shell is also provided with a dewatering mechanism, and the top of the dewatering mechanism is fixedly connected to the bottom of the limiting shell.

[0012] Preferably, the anti-clogging mechanism includes a ventilation groove, the bottom of the ventilation groove is evenly provided with protruding blocks, the outer surface of the protruding blocks is fixedly connected to the inner wall of the ventilation groove, the arc surface of the protruding blocks is downward, the top of the ventilation groove is fixedly connected to a telescopic spring 1, the top of the telescopic spring 1 is fixedly connected to a pressing plate, the bottom of the pressing plate is fixedly connected to a pressing block, the inner wall of the ventilation groove is fixedly connected to a gas outlet box, and the bottom of the gas outlet box is fixedly connected to a nozzle.

[0013] Preferably, the bottom of the limiting shell is fixedly connected to the inner wall of the valve cover, and the ventilation groove is arranged inside the limiting shell.

[0014] Preferably, the cleaning mechanism includes a support column 1, the top of the support column 1 is fixedly connected with a sliding ring, the outer surface of the sliding ring is evenly provided with sliding semicircles, the inner wall of the sliding semicircle is slidably connected to the outer surface of the sliding semicircle, the outer surface of the sliding semicircle is fixedly connected with an abutment block, the end of the sliding semicircle away from the abutment block is fixedly connected with a cleaning plate, the inner wall of the cleaning plate is slidably connected with a positioning ring, the side of the cleaning plate away from the sliding semicircle is evenly provided with brushes, and the outer surface of the brush is fixedly connected to the side of the cleaning plate away from the sliding semicircle.

[0015] Preferably, the bottom of the support column 1 is fixedly connected to the inner wall of the valve cover, and the end of the brush away from the cleaning plate is slidably connected to the outer surface of the limiting shell.

[0016] Preferably, the water removal mechanism includes two support columns, the outer surface of which is sleeved with two telescopic springs, the bottom of which is fixedly connected to the outer surface of the limiting shell, the top of which is fixedly connected with a top block, the outer surface of the top block is fixedly connected with a placement card, the bottom of which is fixedly connected with a scratch plate, and when working, absorbent cotton needs to be placed on the placement card.

[0017] Preferably, the bottom of the second support column is fixedly connected to the outer surface of the limiting shell, and the inner wall of the top block is slidably connected to the outer surface of the second support column.

[0018] Preferably, the screw mechanism includes a threaded rod, a rotating disk is provided at the bottom of the threaded rod, spiral plates are evenly provided on the outer surface of the rotating disk, the spiral plate is fixedly connected to the outer surface of the rotating disk on the side close to the threaded rod, a drooping rod is evenly provided at the bottom of the rotating disk, the top of the drooping rod is fixedly connected to the bottom of the rotating disk, the bottom of the drooping rod is fixedly connected to a support plate, the surface of the support plate is evenly provided with a beating plate, and the side of the beating plate is fixedly connected to the outer surface of the support plate on the side close to the threaded rod.

[0019] Preferably, the bottom of the threaded rod is fixedly connected to the inner wall of the valve cover, and the inner wall of the rotating disk is slidably connected to the bottom of the threaded rod.

[0020] Preferably, the cover plate is threadedly connected to the top of the valve seat, the top of the valve cover is in contact with the bottom of the valve seat, and the bottom of the nut is threadedly connected to the top of the threaded rod.

[0021] The beneficial effects of the present invention are as follows:

[0022] (1) The present invention sets a lift limiting mechanism. When the external air pressure changes, the high-nickel alloy spring and the sealing cover will control the up and down movement of the valve plate, thereby separating the valve plate from the vent and finally allowing the air valve to be ventilated. The bottom of the sealing cover adopts an annular valve structure, which improves the air valve's resistance to impurities and makes it difficult for impurities to adhere. At the same time, the high-nickel alloy spring also improves corrosion resistance.

[0023] (2) The present invention sets an anti-clogging mechanism to prevent dust from accumulating easily in the limiting shell, thereby causing the high-nickel alloy spring to fail. When the air valve is ventilated, the sealing cover moves downward and drives the pressing plate and the pressing block to move downward, thereby causing the pressing block to squeeze the gas ejection box. Since the nozzle of the nozzle is small, the gas in the gas ejection box will be ejected at a higher speed. The impact force generated will flush out the dust that may be clogging the ventilation groove, thereby avoiding clogging of the ventilation groove.

[0024] (3) The present invention provides a cleaning mechanism. The external screw mechanism drives the cleaning mechanism to rotate, and the sliding semicircle slides around the sliding ring, thereby driving the cleaning plate to rotate around the outer wall of the limiting shell. The brush on the cleaning plate will generate friction with the outer surface of the limiting shell, thereby removing more sticky substances on the surface of the lift limiter.

[0025] (4) The present invention sets a water removal mechanism. The high nickel alloy spring will not only be affected by dust, but also be corroded by the above-mentioned gas due to the dirty nature of the exhaust medium, heavy hydrocarbons and corrosive gases, and a certain viscosity. When air enters the inner wall of the limiting shell, it will first contact with the absorbent cotton, which will absorb water droplets in the air. As the absorbent cotton absorbs more and more water, the corrosive gas will first contact with the absorbent cotton adsorbed with water when entering the inside of the limiting shell, so that most of the air with higher viscosity adheres to the absorbent cotton, and the weight of the absorbent cotton also increases, thereby compressing the telescopic spring 2, and finally driving the placement card plate to move downward and drive the scratch plate and the brush to scratch, so that the dust attached to the brush is hung and dropped into the dirt storage groove, thereby achieving self-cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 It is a cross-sectional view of the structure of the present invention;

[0028] Figure 3 It is a partial structural cross-sectional view of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the lift limiting mechanism of the present invention;

[0030] Figure 5 is a structural sectional view of the lift limiting mechanism of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the anti-blocking mechanism of the present invention;

[0032] Figure 7 It is a structural schematic diagram of the cleaning mechanism of the present invention;

[0033] Figure 8 It is a structural schematic diagram of the water removal mechanism of the present invention;

[0034] Fig. 9 yes Figure 8 The enlarged view of point A in the middle;

[0035] Fig.10 It is a structural schematic diagram of the screw mechanism of the present invention;

[0036] In the figure: 1, valve cover; 2, valve seat; 3, cover plate; 4, protective shell; 5, nut; 6, vent 1; 7, lift limiting mechanism; 8, valve plate; 9, screw mechanism; 10, vent 2; 71, limiting shell; 72, dirt storage groove; 73, high nickel alloy spring; 74, sealing cover; 76, anti-blocking mechanism; 77, cleaning mechanism; 78, water removal mechanism; 761, vent groove; 762, protruding block; 763, telescopic spring 1; 764, pressing plate; 765, pressing Pressure block; 766, gas ejection box; 767, nozzle; 771, support column one; 772, sliding ring; 773, sliding semicircle; 774, counter block; 775, cleaning plate; 776, positioning ring; 777, brush; 781, support column two; 782, telescopic spring two; 783, top block; 784, placement card plate; 785, scratch plate; 91, threaded rod; 92, rotating disk; 93, spiral plate; 94, drooping rod; 95, support plate; 96, striking plate. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0038] Example 1, using Figure 1-Figure 10 An anti-clogging gas valve according to one embodiment of the present invention is described as follows.

[0039] like Figure 1-Figure 3 As shown, an anti-clogging gas valve of the present invention comprises:

[0040] A valve cover 1, and a valve seat 2 arranged on the top of the valve cover 1, the outer surface of the valve cover 1 is evenly provided with vents 10, the top of the valve seat 2 is evenly provided with vents 6, the top of the valve seat 2 is fixedly connected with a cover plate 3, and the top of the cover plate 3 is fixedly connected with a protective shell 4;

[0041] A lift limiting mechanism 7, the lift limiting mechanism 7 is used to control the gas flow of the gas valve;

[0042] A screw mechanism 9, and a nut 5 arranged on the top of the screw mechanism 9, wherein the screw mechanism 9 is used to provide power to the lift limiting mechanism 7;

[0043] The protective shell 4 is used to protect the nut 5 and the screw mechanism 9 from falling off when they are fixed in cooperation. The valve plate 8 is arranged between the lift limiting mechanism 7 and the valve cover 1.

[0044] When a gas valve structure with a polymer valve plate 8 is working, when the air pressure changes, the gas will enter the interior of the gas valve through the vent 1 6 and the vent 2 10. First, the screw mechanism 9 will fix the nut 5, the cover plate 3 and the valve seat 2 of the gas valve, and then the lift limiting mechanism 7 will start to work, driving the valve plate 8 to move, thereby controlling the flow of gas.

[0045] like Figure 4-Figure 5 As shown, the lift limiting mechanism 7 includes a limiting shell 71, a dirt storage groove 72 is provided at the bottom of the limiting shell 71, a high nickel alloy spring 73 is fixedly connected to the inner wall of the limiting shell 71, and a sealing cover 74 is fixedly connected to the top of the high nickel alloy spring 73. The sealing cover 74 is relatively long, and the top of the sealing cover 74 is fixedly connected to the bottom of the valve plate 8. The bottom of the sealing cover 74 is an arc-shaped design, and the bottom of the sealing cover 74 adopts an annular surface valve structure, which improves the anti-impurity performance of the air valve and makes it difficult for impurities to adhere. The inner wall of the limiting shell 71 is symmetrically provided with an anti-blocking mechanism 76, and the anti-blocking mechanism 76 is arranged inside the limiting shell 71. The outer surface of the limiting shell 71 is slidably connected with a cleaning mechanism 77. The outer surface of the limiting shell 71 is also provided with a dewatering mechanism 78, and the top of the dewatering mechanism 78 is fixedly connected to the bottom of the limiting shell 71.

[0046] When the external air pressure changes, the high nickel alloy spring 73 and the sealing cover 74 will control the up and down movement of the valve plate 8, thereby separating the valve plate 8 from the vent 6 and finally ventilating the air valve. The high nickel alloy spring 73 also improves the corrosion resistance.

[0047] like Figure 6 As shown, the anti-clogging mechanism 76 includes a ventilation groove 761, the bottom of which is evenly provided with protruding blocks 762, the outer surface of the protruding blocks 762 is fixedly connected to the inner wall of the ventilation groove 761, and the arc surface of the protruding blocks 762 is downward, the top of the ventilation groove 761 is fixedly connected to a telescopic spring 763, the top of the telescopic spring 763 is fixedly connected to a pressing plate 764, the bottom of the pressing plate 764 is fixedly connected to a pressing block 765, the inner wall of the ventilation groove 761 is fixedly connected to a gas ejection box 766, and the bottom of the gas ejection box 766 is fixedly connected to a nozzle 767.

[0048] Dust is easily accumulated in the limiting shell 71, which may cause the performance of the high nickel alloy spring 73 to fail. When the air valve is ventilated, the sealing cover 74 moves downward. When it moves to a certain distance, the sealing cover 74 will come into contact with the pressing plate 764, and will drive the pressing plate 764 and the pressing block 765 to move downward. The telescopic spring 763 will also be compressed, so that the pressing block 765 squeezes the gas outlet box 766. Since the nozzle 767 has a small nozzle, the gas in the gas outlet box 766 will be ejected at a higher speed. The impact force generated will flush out the dust that may be blocked in the ventilation groove 761, thereby avoiding blockage of the ventilation groove 761.

[0049] The bottom of the limiting shell 71 is fixedly connected to the inner wall of the valve cover 1 , and the vent groove 761 is arranged inside the limiting shell 71 .

[0050] like Figure 7 As shown, the cleaning mechanism 77 includes a support column 771, the top of the support column 771 is fixedly connected with a sliding ring 772, the outer surface of the sliding ring 772 is evenly provided with sliding semicircles 773, the inner wall of the sliding semicircle 773 is slidably connected to the outer surface of the sliding ring 772, the outer surface of the sliding semicircle 773 is fixedly connected with a counter block 774, the end of the sliding semicircle 773 away from the counter block 774 is fixedly connected with a cleaning plate 775, the inner wall of the cleaning plate 775 is slidably connected with a positioning ring 776, the side of the cleaning plate 775 away from the sliding semicircle 773 is evenly provided with brushes 777, and the outer surface of the brush 777 is fixedly connected to the side of the cleaning plate 775 away from the sliding semicircle 773.

[0051] The internal screw mechanism 9 drives the cleaning mechanism 77 to rotate, and the sliding semicircle 773 slides around the sliding ring 772, thereby driving the cleaning plate 775 to rotate around the outer wall of the limiting shell 71. The brush 777 on the cleaning plate 775 will produce friction with the outer surface of the limiting shell 71, thereby removing more sticky substances on the surface of the lift limiter, preventing the stains on the surface of the lift limiter from further adhering to the valve plate 8, and preventing the valve plate 8 from getting stuck and swelling.

[0052] The bottom of the support column 771 is fixedly connected to the inner wall of the valve cover 1 , and one end of the brush 777 away from the cleaning plate 775 is slidably connected to the outer surface of the limiting shell 71 .

[0053] like Figure 8-Figure 9 As shown, the water removal mechanism 78 includes a second support column 781, the outer surface of the second support column 781 is sleeved with a second telescopic spring 782, the bottom of the second telescopic spring 782 is fixedly connected to the outer surface of the limiting shell 71, the top of the second telescopic spring 782 is fixedly connected with a top block 783, the outer surface of the top block 783 is fixedly connected with a placement card plate 784, the bottom of the placement card plate 784 is fixedly connected with a scratch plate 785, and when working, absorbent cotton needs to be placed on the placement card plate 784.

[0054] The high nickel alloy spring 73 will not only be affected by dust, but also because the exhaust medium is dirty and contains heavy hydrocarbons and corrosive gases with a certain viscosity, the high nickel alloy spring 73 will also be corroded by the above-mentioned gases. When the air enters the inner wall of the limiting shell 71, it will first come into contact with the absorbent cotton, and the absorbent cotton will absorb water droplets in the air. As the absorbent cotton absorbs more and more moisture, the corrosive gas will first come into contact with the absorbent cotton adsorbed with water when entering the inside of the limiting shell, thereby causing most of the gas particles with higher viscosity and heavy hydrocarbons to adhere to the absorbent cotton, and the weight of the absorbent cotton will also increase, thereby compressing the telescopic spring 2 782, and finally driving the placement card plate 784 to move downward and drive the scratch plate 785 to scratch the brush 777, thereby causing the dust attached to the brush 777 to be hung and dropped into the dirt storage groove 72, thereby achieving self-cleaning. The absorbent cotton absorbs moisture to increase its weight, presses down the telescopic spring 782, and scratches the brush 777 to achieve cleaning. This cleaning only needs to occur once from time to time, and does not need to produce a continuous cleaning effect. When the air valve is not working, the moisture in the absorbent cotton evaporates naturally, the weight is reduced, and the spring returns to its original state. The recovery process will still scratch the brush, thus ensuring that in the process from the start to the end of the air valve working, there is at least one important increase causing scratches and one weight reduction causing the spring to return to its original state causing scratches.

[0055] The bottom of the second support column 781 is fixedly connected to the outer surface of the limiting shell 71 , and the inner wall of the top block 783 is slidably connected to the outer surface of the second support column 781 .

[0056] The specific workflow is as follows:

[0057] During operation, firstly, the nut 5 and the valve seat 2 of the air valve are installed and fixed, and placed in the exhaust component of the automobile. With the change of air pressure, the gas will enter the interior of the air valve, and the lift limiting mechanism 7 will start to work first. The air pressure will first press the valve plate 8, and the high nickel alloy spring 73 and the sealing cover 74 will control the downward movement of the valve plate 8, thereby separating the valve plate 8 from the air vent 6, and finally ventilating the air valve. While the lift limiting mechanism 7 is working, the sealing cover 74 moves downward, and will drive the pressing plate 764 and the pressing block 765 to move downward, so that the pressing block 765 squeezes the gas outlet box 766. Since the nozzle of the nozzle 767 is small, the gas in the gas outlet box 766 will be ejected at a greater speed, and the impact force generated will flush out the dust that may be blocked in the ventilation groove 761, thereby avoiding the blockage of the ventilation groove 761. At the same time, the external screw mechanism 9 drives the cleaning mechanism 77 to rotate, and the sliding semicircle 773 surrounds the sliding The ring 772 slides, thereby driving the cleaning plate 775 to rotate around the outer wall of the limiting shell 71. The brush 777 on the cleaning plate 775 will rub against the outer surface of the limiting shell 71, thereby removing more sticky substances on the surface of the lift limiter. At the same time, when the air enters the inner wall of the limiting shell 71, it will first contact the absorbent cotton, and the absorbent cotton will absorb water droplets in the air. As the absorbent cotton absorbs more and more moisture, the corrosive gas will first contact the absorbent cotton adsorbed with water when entering the inside of the limiting shell, thereby causing most of the gas particles with higher viscosity and heavy hydrocarbons to adhere to the absorbent cotton. As the absorbent cotton absorbs more and more moisture, the weight of the absorbent cotton will also increase, thereby compressing the telescopic spring 2 782, and finally driving the placement card plate 784 to move downward and drive the scratch plate 785 to scratch the brush 777, thereby causing the dust attached to the brush 777 to be hung and dropped into the dirt storage groove 72, thereby achieving self-cleaning.

[0058] Embodiment 2, use Figure 1-Figure 10 An anti-clogging gas valve according to one embodiment of the present invention is described as follows.

[0059] like Fig.10 and Figure 4 As shown, an anti-clogging air valve of the present invention is based on the first embodiment, and the screw mechanism 9 includes a threaded rod 91, a rotating disk 92 is arranged at the bottom of the threaded rod 91, and a spiral plate 93 is evenly arranged on the outer surface of the rotating disk 92, and the spiral plate 93 is fixedly connected to the outer surface of the rotating disk 92 on the side close to the threaded rod 91, and a drooping rod 94 is evenly arranged on the bottom of the rotating disk 92, and the top of the drooping rod 94 is fixedly connected to the bottom of the rotating disk 92, and a support plate 95 is fixedly connected to the bottom of the drooping rod 94, and a beating plate 96 is evenly arranged on the surface of the support plate 95, and the beating plate 96 is fixedly connected to the outer surface of the support plate 95 on the side close to the threaded rod 91.

[0060] When the gas passes through the inside of the air valve, the gas will generate a force with the spiral plate 93, thereby rotating the rotating disk 92, and finally driving the supporting plate 95 below to rotate, and the moving plate 96 will also rotate with the supporting plate 95. Since there are four moving plates 96 and three abutting blocks 774, and the moving plates 96 rotate in the same direction, the moving plates 96 will come into contact with the abutting blocks 774, thereby driving the sliding semicircle 773 to rotate, and the cleaning mechanism 77 will start working.

[0061] The bottom of the threaded rod 91 is fixedly connected to the inner wall of the valve cover 1 , and the inner wall of the rotating disk 92 is slidably connected to the bottom of the threaded rod 91 .

[0062] The cover plate 3 is threadedly connected to the top of the valve seat 2 , the top of the valve cover 1 is in contact with the bottom of the valve seat 2 , and the bottom of the nut 5 is threadedly connected to the top of the threaded rod 91 .

[0063] The specific workflow is as follows:

[0064] During operation, first, the nut 5 is threadedly connected to the threaded rod 91 to fix the entire air valve. After that, when the gas enters the air valve, the gas will generate a force with the spiral plate 93, and then the rotating disk 92 will rotate, and finally drive the supporting plate 95 below to rotate, and the moving plate 96 will also rotate with the supporting plate 95, so that the moving plate 96 comes into contact with the abutting block 774, and then drives the sliding semicircle 773 to rotate, and the cleaning mechanism 77 starts working.

[0065] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An anti-clogging gas valve, characterized in that: include: A valve cover (1), and a valve seat (2) arranged on the top of the valve cover (1), the outer surface of the valve cover (1) is evenly provided with a second vent (10), the top of the valve seat (2) is evenly provided with a first vent (6), the top of the valve seat (2) is fixedly connected to a cover plate (3), and the top of the cover plate (3) is fixedly connected to a protective shell (4); A lift limiting mechanism (7), the lift limiting mechanism (7) is used to control the gas flow of the gas valve; A screw mechanism (9), and a nut (5) arranged on the top of the screw mechanism, wherein the screw mechanism (9) is used to provide power to the lift limiting mechanism (7); The lift limiting mechanism (7) comprises a limiting shell (71), the bottom of which is provided with a dirt storage groove (72), the inner wall of the limiting shell (71) is fixedly connected with a high-nickel alloy spring (73), the top of the high-nickel alloy spring (73) is fixedly connected with a sealing cover (74), the bottom of the sealing cover (74) is of arc-shaped design, the inner wall of the limiting shell (71) is symmetrically provided with an anti-blocking mechanism (76), the outer surface of the limiting shell (71) is slidably connected with a cleaning mechanism (77), and the outer surface of the limiting shell (71) is also provided with a water removal mechanism (78).

2. The anti-clogging gas valve according to claim 1, characterized in that: The anti-blocking mechanism (76) comprises a ventilation groove (761), the bottom of which is evenly provided with protruding blocks (762), the arc surface of which is downwardly facing, the top of the ventilation groove (761) is fixedly connected with a telescopic spring (763), the top of the telescopic spring (763) is fixedly connected with a pressing plate (764), the bottom of the pressing plate (764) is fixedly connected with a pressing block (765), the inner wall of the ventilation groove (761) is fixedly connected with a gas ejection box (766), and the bottom of the gas ejection box (766) is fixedly connected with a nozzle (767).

3. The anti-clogging gas valve according to claim 2, characterized in that: The bottom of the limiting shell (71) is fixedly connected to the inner wall of the valve cover (1), and the ventilation groove (761) is arranged inside the limiting shell (71).

4. The anti-clogging gas valve according to claim 1, characterized in that: The cleaning mechanism (77) comprises a support column (771), the top of the support column (771) is fixedly connected to a sliding ring (772), the outer surface of the sliding ring (772) is evenly provided with sliding semicircles (773), the outer surface of the sliding semicircle (773) is fixedly connected to an abutting block (774), one end of the sliding semicircle (773) away from the abutting block (774) is fixedly connected to a cleaning plate (775), the inner wall of the cleaning plate (775) is slidably connected to a positioning ring (776), and a brush (777) is evenly provided on one side of the cleaning plate (775) away from the sliding semicircle (773).

5. The anti-clogging gas valve according to claim 4, characterized in that: The bottom of the support column 1 (771) is fixedly connected to the inner wall of the valve cover (1), and the end of the brush (777) away from the cleaning plate (775) is slidably connected to the outer surface of the limiting shell (71).

6. The anti-clogging gas valve according to claim 1, characterized in that: The water removal mechanism (78) comprises a second support column (781), the outer surface of the second support column (781) is sleeved with a second telescopic spring (782), the bottom of the second telescopic spring (782) is fixedly connected to the outer surface of the limiting shell (71), the top of the second telescopic spring (782) is fixedly connected to a top block (783), the outer surface of the top block (783) is fixedly connected to a placement card plate (784), and the bottom of the placement card plate (784) is fixedly connected to a scratch plate (785).

7. The anti-clogging gas valve according to claim 6, characterized in that: The bottom of the second support column (781) is fixedly connected to the outer surface of the limiting shell (71), and the inner wall of the top block (783) is slidably connected to the outer surface of the second support column (781).

8. The anti-clogging gas valve according to claim 1, characterized in that: The screw mechanism (9) comprises a threaded rod (91), a rotating disk (92) is arranged at the bottom of the threaded rod (91), spiral plates (93) are evenly arranged on the outer surface of the rotating disk (92), a drooping rod (94) is evenly arranged at the bottom of the rotating disk (92), a supporting plate (95) is fixedly connected to the bottom of the drooping rod (94), and a beating plate (96) is evenly arranged on the surface of the supporting plate (95).

9. The anti-clogging gas valve according to claim 8, characterized in that: The bottom of the threaded rod (91) is fixedly connected to the inner wall of the valve cover (1), and the inner wall of the rotating disk (92) is slidably connected to the bottom of the threaded rod (91).

10. The anti-clogging gas valve according to claim 8, characterized in that: The cover plate (3) is threadedly connected to the top of the valve seat (2), the top of the valve cover (1) is in contact with the bottom of the valve seat (2), and the bottom of the nut (5) is threadedly connected to the top of the threaded rod (91).

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