Stable noise-proof device for self-adapting adjustment of gas combination valve

Abstract

The application discloses a stable noise-proof equipment for self-adapting adjustment of a gas combination valve, a valve seat is arranged in the middle of the inner cavity of a valve body, a main valve disc is movably arranged in the inner cavity of the valve seat, a lubricating and noise-reducing assembly is arranged in the valve seat and located at the outer side of the bottom end of the main valve disc, a blocking baffle is arranged between the lubricating and noise-reducing assembly and a one-way oil inlet valve in the valve seat, and a power assembly is arranged above the lubricating and noise-reducing assembly. The lubricating and noise-reducing assembly and the circulating assembly are arranged to smoothly reduce the friction between the main valve disc and the bottom end of the valve seat. When the lubricating and noise-reducing assembly removes the blockage between the bottom end of the lubricating and noise-reducing assembly and the oil storage tank, the lubricating oil in the oil storage tank can enter in one direction, at this time, the lubricating oil can continuously circulate between the lubricating and noise-reducing assembly and the oil storage tank, the lubricating and noise-reducing assembly is kept full of lubricating oil, the lubricating effect is prevented from being reduced, the friction reduction and noise-proof effect is prevented from being affected, and the abrasion is reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of gas combination valves, and particularly relates to a stable noise-preventing device for self-adaptive regulation of a gas combination valve, which is particularly suitable for industrial valve systems that need to reduce friction noise and realize automatic lubrication and maintenance. BACKGROUND

[0002] The self-adaptive regulation control valve functions to self-adaptively and efficiently adjust the hydrogen pressure of a hydrogen supply pipeline of a fuel cell, has an automatic cut-off protection function, adjusts and ensures that hydrogen with a certain flow rate and pressure meets the working requirements of a fuel cell power system, and guarantees safe and reliable operation of the fuel cell power system.

[0003] When the top rod pushes the main valve to move up and down, the surface of the valve disc and the inside of the valve body will be in constant friction. Long-term friction will cause surface wear, and the debris of the worn surface will produce noise during the friction process, which not only brings discomfort to the operating personnel, but also indicates that the internal parts are worn and affect the service life. Therefore, it needs to be improved.

[0004] In the frequent opening and closing process of the existing gas combination valve, the friction between the main valve disc and the valve body is easy to produce noise and wear. Although the patent CN220036849U improves the efficiency by bidirectional oil outlet, it does not solve the problem of friction noise reduction. Although the patent CN112901386B optimizes the sealing structure, it lacks dynamic lubrication and self-maintenance function. Therefore, there is an urgent need for a valve device integrating noise reduction, self-lubrication and intelligent maintenance. SUMMARY

[0005] To solve the problems raised in the background art, the present application provides a stable noise-preventing device for self-adaptive regulation of a gas combination valve, which has the advantages of reducing friction and preventing noise.

[0006] In order to achieve the above object, the present application provides the following technical scheme: a stable noise-proof equipment for self-adaptive adjustment of a gas combination valve, comprising a valve body, a valve seat, a main valve disc, a lubricating and noise-reducing assembly, and a circulating assembly; the valve seat is arranged in the middle of the inner cavity of the valve body; the main valve disc is movably arranged in the inner cavity of the valve seat; the lubricating and noise-reducing assembly is arranged in the valve seat and located outside the bottom end of the main valve disc; the lubricating and noise-reducing assembly comprises a lubricating cavity, a first corrugated sealing pipe and a second corrugated sealing pipe; the lubricating cavity is arranged in the valve seat and located outside the bottom end of the main valve disc, and is filled with lubricating oil to reduce friction; the first corrugated sealing pipe is fixedly arranged between the top end of the main valve disc and the inner wall of the valve seat; and the second corrugated sealing pipe is arranged between the bottom of the main valve disc and the inner wall of the valve seat; the circulating assembly comprises a one-way oil discharge valve; the one-way oil discharge valve is arranged in the valve seat; the inner part of the valve seat is provided with a one-way oil inlet valve located directly below the one-way oil discharge valve; the one-way oil discharge valve and the one-way oil inlet valve are fixedly communicated with an oil storage tank through a pipeline; the inner part of the valve seat is further provided with a blocking baffle located between the lubricating and noise-reducing assembly and the one-way oil inlet valve, and a power assembly located above the lubricating and noise-reducing assembly.

[0007] Further, the top of the valve body is provided with a valve cover, and a top rod mechanism is arranged between the inside of the valve cover and the top of the valve body.

[0008] Further, the two sides of the valve body are respectively provided with an air inlet and an air outlet, and the main valve disc is elastically connected with the inner cavity of the valve seat through a first power spring.

[0009] Further, the power assembly comprises a first pneumatic cylinder, a connecting spring, an air passage, an air cavity, a pneumatic piston rod and a piston ring; the first pneumatic cylinder is fixedly arranged in the valve seat and located at one side of the top of the lubricating cavity; the output end of the first pneumatic cylinder is elastically connected with the inner wall of the first pneumatic cylinder shell through the connecting spring; the air cavity is arranged in the valve seat and located at one side of the first pneumatic cylinder; the air cavity is communicated with the inner cavity of the first pneumatic cylinder through the air passage; the pneumatic piston rod is movably arranged in the air cavity and fixedly connected with the top of the blocking baffle at the bottom end; and the piston ring is fixedly arranged at the bottom of the output end of the first pneumatic cylinder.

[0010] Further, the inner cavity of the oil storage tank is provided with a filter plate located below one side of the one-way oil discharge valve; one end of the top of the oil storage tank is fixedly communicated with an oil supplement valve pipe; and the inner cavity of the oil storage tank is movably provided with a movable disc located on the surface of the bottom end of the oil supplement valve pipe.

[0011] Further, one surface of the oil storage tank is provided with a blocking assembly, which comprises a shielding plate, a second pneumatic cylinder and an air pipe; the shielding plate is movably arranged on one side of the inner cavity of the oil storage tank; the second pneumatic cylinder is fixedly arranged on one side of the surface of the oil storage tank; and the second pneumatic cylinder is fixedly communicated with the inner cavity of the top of the oil storage tank through the air pipe.

[0012] Further, the other side of the oil storage tank is provided with an unlocking assembly above the filter plate, the unlocking assembly comprises a locking block, a limiting rod, a movable frame, a second power spring and a top frame; the limiting rod is fixedly installed in the inner cavity of the other side of the oil storage tank and located outside the filter plate, the movable frame is movably installed on the surface of the limiting rod, the locking block is fixedly installed on the inner side of the bottom end of the movable frame and located inside the filter plate, the movable frame is elastically connected with the inner wall of the oil storage tank through the second power spring, the top frame is movably installed on the middle part of the top end of the oil storage tank, and the inner side inclined surface of the top of the movable frame is in sliding connection with the outer side inclined surface of the top frame.

[0013] Further, the inner wall of the second power spring is in sliding connection with the surface of the limiting rod.

[0014] Further, the top of the oil storage tank is provided with a pressure sensing alarm above the middle part of the top frame.

[0015] Further, the unlocking assembly is also connected with the pressure sensing alarm, and sends an alarm signal when the top frame is triggered.

[0016] Compared with the prior art, the beneficial effects of the present application are as follows:

[0017] The above technical scheme sets the lubricating and noise reducing assembly and the circulating assembly, the inside of the lubricating and noise reducing assembly is filled with lubricating oil, so that the friction between the main valve disc and the bottom end of the valve seat can be reduced smoothly, when the liquid level in the lubricating and noise reducing assembly decreases, a gap is formed at the top to generate negative pressure, and the circulating assembly removes the blockage between the bottom end of the lubricating and noise reducing assembly and the oil storage tank, the lubricating oil in the oil storage tank can enter in one direction, so that the lubricating oil can circulate between the lubricating and noise reducing assembly and the oil storage tank, the inside of the lubricating and noise reducing assembly is kept full of lubricating oil, the lubricating effect is not reduced, the friction is reduced, and the noise reduction effect is not affected, and the wear is reduced.

[0018] The present application sets the movable disc and the unlocking assembly, when the top of the filter plate is blocked by impurities, a large amount of lubricating oil is accumulated at the top, which pushes the whole movable disc upward, then pushes the top end of the middle part of the unlocking assembly upward, drives the two ends of the unlocking assembly to move, then releases the clamping and fixing effect of the two sides of one end of the filter plate, when the top end of the middle part of the unlocking assembly moves upward and contacts the bottom of the pressure sensing alarm, the pressure sensing alarm senses the pressure information and emits an alarm sound, then the whole filter plate can be taken out from the inside of the oil storage tank for cleaning.

[0019] The application sets the movable disc and the plugging assembly, when the whole of the movable disc moves upward, the gas on the top of the oil storage tank is pushed through the breather pipe into the inner cavity of the second pneumatic cylinder side, and then the output end of the shielding plate pulls the whole of the shielding plate to move to one side until it is completely moved above and below the filter plate, finally the upper and lower of the filter plate are smoothly plugged to avoid the lubricating oil entering, so that the filter plate is smoothly taken out subsequently. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The stable noise-proof equipment structure schematic diagram of adaptive adjustment gas combination valve of the application;

[0021] Figure 2 The stable noise-proof equipment structure schematic diagram of adaptive adjustment gas combination valve of the application;

[0022] Figure 3 The stable noise-proof equipment structure schematic diagram of adaptive adjustment gas combination valve of the application; Figure 2 The local enlarged structure schematic diagram of A in the application;

[0023] Figure 4 The local enlarged structure schematic diagram of B in the application; Figure 2 The local enlarged structure schematic diagram of B in the application;

[0024] Figure 5 The local enlarged structure schematic diagram of C in the application Figure 2 The local enlarged structure schematic diagram of C in the application

[0025] Figure 6 The structure schematic diagram of oil storage tank of the application;

[0026] Figure 7 The structure schematic diagram of plugging assembly of the application;

[0027] Figure 8 The structure schematic diagram of oil storage tank of the application;

[0028] Figure 9 The structure schematic diagram of oil storage tank of the application;

[0029] Figure 10 The structure schematic diagram of oil storage tank of the application;

[0030] In the diagram: 1. Valve body; 2. Valve cover; 3. Push rod mechanism; 4. Valve seat; 5. Air inlet; 6. Exhaust port; 7. Main valve disc; 8. First power spring; 9. Lubrication and noise reduction assembly; 901. Lubrication chamber; 902. First corrugated sealing pipe; 903. Second corrugated sealing pipe; 10. Circulation assembly; 101. One-way drain valve; 102. One-way inlet valve; 103. Sealing baffle; 104. Power assembly; 1041. First pneumatic cylinder; 1042. Connecting spring; 1043. 1044. Vent groove; 1045. Air chamber; 1046. Pneumatic piston rod; 1047. Piston ring; 11. Oil tank; 12. Filter plate; 13. Movable disc; 14. Sealing assembly; 1401. Baffle plate; 1402. Second pneumatic cylinder; 1403. Vent pipe; 15. Unlocking assembly; 1501. Locking block; 1502. Limit rod; 1503. Movable frame; 1504. Second power spring; 1505. Top frame; 16. Oil replenishment valve pipe; 17. Pressure sensor alarm. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figures 1 to 10 As shown, the present invention provides a stable noise reduction device for an adaptive regulating gas combination valve, including a valve body 1; a valve seat 4, disposed in the middle of the inner cavity of the valve body 1; a main valve disc 7, movably installed in the inner cavity of the valve seat 4; a lubrication noise reduction component 9, disposed inside the valve seat 4 and located on the outer side of the bottom end of the main valve disc 7; and a circulation component 10, including a one-way oil drain valve 101, which is disposed inside the valve seat 4. A one-way oil inlet valve 102 is disposed inside the valve seat 4 and located directly below the one-way oil drain valve 101. The one-way oil drain valve 101 and the one-way oil inlet valve 102 are fixedly connected to an oil storage tank 11 through a pipeline. A sealing baffle 103 is disposed inside the valve seat 4 between the lubrication noise reduction component 9 and the one-way oil inlet valve 102. A power component 104 is disposed inside the valve seat 4 and located above the lubrication noise reduction component 9.

[0033] When the level of lubricating oil in the lubrication and noise reduction component 9 drops, the power component 104 will drive the sealing baffle 103 to move upward, and then release the obstruction of the one-way oil inlet valve 102. The negative pressure in the gap created by the drop in the top of the lubrication and noise reduction component 9 will draw away the lubricating oil in the lower part of the oil tank 11 through the one-way oil inlet valve 102, thereby filling the lubricating oil inside the lubrication and noise reduction component 9.

[0034] likeFigure 2 As shown, a valve cover 2 is provided on the top of the valve body 1, and a push rod mechanism 3 is provided between the inside of the valve cover 2 and the top of the valve body 1.

[0035] The above solution is adopted: by setting up a push rod mechanism 3, when the gas at the top of the valve body 1 pushes the push rod mechanism 3 downward, the bottom of the push rod mechanism 3 will push the main valve disc 7 downward so that the valve seat 4 and the inner cavity of the valve body 1 can be connected.

[0036] like Figure 2 As shown, an air inlet 5 and an exhaust port 6 are respectively provided on both sides of the valve body 1, and the main valve disc 7 is elastically connected to the inner cavity of the valve seat 4 through the first power spring 8.

[0037] The above solution is adopted: by setting a first power spring 8, when the main valve disc 7 is pushed downward, the first power spring 8 will be compressed, and when the push rod mechanism 3 is reset, the elastic force of the first power spring 8 will be released to push the main valve disc 7 to reset upward.

[0038] like Figures 3 to 5 As shown, the lubrication and noise reduction assembly 9 includes a lubrication chamber 901, a first corrugated sealing tube 902, and a second corrugated sealing tube 903.

[0039] The lubrication chamber 901 is located inside the valve seat 4 and on the outer side of the bottom of the main valve disc 7. The first corrugated sealing tube 902 is fixedly installed between the top of the main valve disc 7 and the inner wall of the valve seat 4. The second corrugated sealing tube 903 is located between the bottom of the main valve disc 7 and the inner wall of the valve seat 4.

[0040] Using the above scheme: through the design of the first corrugated sealing tube 902 and the second corrugated sealing tube 903, the lubricating oil protruding from the top or bottom of the main valve disc 7 can be blocked and sealed.

[0041] like Figure 3 As shown, the power assembly 104 includes a first pneumatic cylinder 1041, a connecting spring 1042, a venting groove 1043, an air chamber 1044, a pneumatic piston rod 1045, and a piston ring 1046.

[0042] The first pneumatic cylinder 1041 is fixedly installed inside the valve seat 4 and located on the top side of the lubrication chamber 901. The output end of the first pneumatic cylinder 1041 is elastically connected to the inner wall of the housing of the first pneumatic cylinder 1041 through the connecting spring 1042. The air chamber 1044 is opened inside the valve seat 4 and located on the side of the first pneumatic cylinder 1041. The air chamber 1044 is connected to the inner cavity of the first pneumatic cylinder 1041 through the air passage 1043. The pneumatic piston rod 1045 is movably installed in the air chamber 1044 and its bottom end is fixedly connected to the top of the sealing baffle 103. The piston ring 1046 is fixedly installed at the bottom of the output end of the first pneumatic cylinder 1041.

[0043] The above scheme is adopted: by setting a first pneumatic cylinder 1041, when a negative pressure cavity is generated at the top of the lubrication chamber 901, the output end of the first pneumatic cylinder 1041 and the piston ring 1046 will move downward as a whole through the negative pressure and the elastic force of the connecting spring 1042, so as to draw away the gas in the air chamber 1044 through the venting groove 1043, which will drive the pneumatic piston rod 1045 to pull the sealing baffle 103 upward as a whole.

[0044] like Figure 7 and Figure 8 As shown, the inner cavity of the oil tank 11 is provided with a filter plate 12 located below one side of the one-way drain valve 101. One end of the top of the oil tank 11 is fixedly connected to the oil replenishment valve pipe 16. The top of the inner cavity of the oil tank 11 is movably installed with a movable disc 13 located on the bottom surface of the oil replenishment valve pipe 16.

[0045] Using the above solution: when the operator needs to add lubricating oil to the inside of the oil storage tank 11, an external pipeline can be connected and introduced into the oil storage tank 11 through the oil replenishment valve pipe 16.

[0046] like Figure 6 and Figure 7 As shown, a sealing assembly 14 is provided on one side surface of the oil tank 11. The sealing assembly 14 includes a baffle plate 1401, a second pneumatic cylinder 1402, and a vent pipe 1403.

[0047] The baffle plate 1401 is movably installed on one side of the inner cavity of the oil tank 11, and the second pneumatic cylinder 1402 is fixedly installed on one side of the surface of the oil tank 11. The second pneumatic cylinder 1402 is fixedly connected to the inner cavity at the top of the oil tank 11 through the air pipe 1403.

[0048] The above solution is adopted: by setting up a baffle plate 1401, when the entire movable plate 13 moves upward, the gas in the top cavity of the oil tank 11 will enter the inner wall of the second pneumatic cylinder 1402 through the vent pipe 1403, thereby driving the baffle plate 1401 to move to one side through the output end of the second pneumatic cylinder 1402, which can block the upper and lower parts of the filter plate 12.

[0049] like Figure 9 and Figure 10 As shown, an unlocking assembly 15 is provided on the other side of the oil tank 11, located above the filter plate 12. The unlocking assembly 15 includes a locking block 1501, a limiting rod 1502, a movable frame 1503, a second power spring 1504, and a top frame 1505.

[0050] The limiting rod 1502 is fixedly installed in the other side inner cavity of the oil storage tank 11 and located outside the filter plate 12, the movable frame 1503 is movably installed on the surface of the limiting rod 1502, the locking block 1501 is fixedly installed at the bottom end inner side of the movable frame 1503 and located inside the filter plate 12, the movable frame 1503 is elastically connected with the inner wall of the oil storage tank 11 through the second power spring 1504, the top frame 1505 is movably installed at the middle part of the top end of the oil storage tank 11, and the inner side inclined surface of the top of the movable frame 1503 is in sliding connection with the outer side inclined surface of the top frame 1505.

[0051] By setting the top frame 1505, when the whole of the movable disc 13 rises to the highest point, the top frame 1505 is pushed to move upward as a whole, so that the outer side inclined surface of the top frame 1505 extrudes and pushes the inner side inclined surface of the movable frame 1503, drives the two movable frames 1503 and the locking block 1501 to move away from each other, so that the locking block 1501 is separated from the inside of the filter plate 12, and the locking and fixing of the whole of the filter plate 12 can be released.

[0052] As shown in Figure 9 and Figure 10 , the inner wall of the second power spring 1504 is in sliding connection with the surface of the limiting rod 1502.

[0053] By setting the limiting rod 1502, when the second power spring 1504 is compressed or released and stretched, it will slide on the surface of the limiting rod 1502 and perform horizontal stretching and contraction.

[0054] As shown in Figures 6 to 8 , the top of the oil storage tank 11 is provided with the pressure sensing alarm 17 located above the middle part of the top frame 1505.

[0055] By setting the pressure sensing alarm 17, when the whole of the top frame 1505 moves upward, the top end of the top frame 1505 contacts the bottom end of the pressure sensing alarm 17, so that the bottom end of the pressure sensing alarm 17 senses the pressure information, and reaches the preset pressure threshold, finally the pressure sensing alarm 17 emits an alarm sound to remind the operator.

[0056] Working principle and use process of the application:

[0057] Firstly, when the gas in the valve cover 2 pushes the top rod mechanism 3 to drive the whole of the main valve disc 7 to move downward, the air inlet 5 is communicated with the air outlet 6 through the valve seat 4, and then the gas can enter into the valve seat 4 through the air inlet 5 and be discharged from the air outlet 6 through the top cavity of the valve body 1.

[0058] And in the main valve disc 7 whole back and forth movement, the friction of the main valve disc 7 bottom end and the inner wall of the valve seat 4 can be reduced by the lubricating oil in the lubricating cavity 901, thereby reducing the noise, and then when the lubricating oil in the lubricating cavity 901 cavity drops, the top of the lubricating cavity 901 cavity will form a cavity negative pressure, so that the first pneumatic cylinder 1041 output end and the piston ring 1046 can be driven by the elastic force of the connecting spring 1042, so as to drive the gas cavity 1044 in the cavity of the gas cavity 1044, so that the pneumatic piston rod 1045 is driven by the negative pressure to drive the blocking baffle 103 to rise, at this time the bottom end of the blocking baffle 103 will smoothly remove the blocking effect of the one-way oil inlet valve 102 on one side, finally due to the suction force of the negative pressure cavity at the top of the lubricating cavity 901, the lubricating oil at the bottom of the oil storage tank 11 cavity will be sucked away through the one-way oil inlet valve 102, and part of the lubricating oil above the lubricating cavity 901 will be pushed through the one-way oil outlet valve 101 to enter the top of the valve body 1, and filtered through the filter plate 12, realizing the purpose of circulation.

[0059] When the top of the filter plate 12 accumulates a large amount of impurities to block the mesh, the top of the filter plate 12 will accumulate a large amount of lubricating oil, thereby driving the movable disc 13 to move upward, and then driving the gas in the top of the oil storage tank 11 cavity to enter the inner cavity of the second pneumatic cylinder 1402 through the air pipe 1403, thereby making the output end of the second pneumatic cylinder 1402 pull the blocking plate 1401 to move to one side, until completely shielding and sealing above and below the filter plate 12.

[0060] At the same time, when the movable disc 13 rises to the top of the top frame 1505 and drives the top frame 1505 to move upward, the inclined surface on both sides of the top frame 1505 will be squeezed to drive the inclined surface on the top inside of the movable frame 1503, and the movable frame 1503 and the locking block 1501 will move in opposite directions, so that the locking block 1501 is separated from the inner cavity on both sides of one end of the filter plate 12, and the filter plate 12 is released. Fixed clamping, and when the top frame 1505 rises, the top end will contact the bottom end of the pressure sensing alarm 17, thereby making the pressure sensing alarm 17 sense the pressure information, and when the pressure reaches the preset threshold, an alarm sound will occur, thereby reminding the operator that the filter plate 12 is blocked and needs to be taken out for cleaning.

[0061] Example 1:

[0062] When the main valve disc 7 is driven to move down by the jack mechanism 3, the lubricating oil in the lubricating cavity 901 is reduced, and negative pressure is generated. The first pneumatic cylinder 1041 of the power assembly 104 is driven to move down by the negative pressure, the piston ring 1046 is driven to move down, the gas in the air cavity 1044 is discharged through the air vent groove 1043, the blocking baffle 103 is pulled up by the pneumatic piston rod 1045, the one-way oil inlet valve 102 is opened, and the lubricating oil in the oil storage tank 11 is supplemented to the lubricating cavity 901 through the pipeline. In the circulation process, the lubricating oil is returned to the oil storage tank 11 through the one-way oil outlet valve 101, and the filter plate 12 filters impurities.

[0063] Embodiment 2:

[0064] When the filter plate 12 is blocked, the lubricating oil drives the movable disc 13 to move up:

[0065] (1) The movable disc 13 lifts the top frame 1505, the movable frame 1503 moves outward along the limiting rod 1502, and the locking block 1501 is separated from the filter plate 12;

[0066] (2) The gas at the top of the oil storage tank 11 enters the second pneumatic cylinder 1402 through the air vent pipe 1403, and drives the blocking baffle 1401 to seal the filter plate 12 transversely;

[0067] (3) The pressure sensor alarm 17 is triggered to remind maintenance.

[0068] Embodiment 3:

[0069] The lubricating oil is supplemented through the oil supplement valve pipe 16, the first power spring 8 drives the main valve disc 7 to return to the original position after the jack mechanism 3 is reset, and the lubricating cavity 901 restores the initial liquid level.

[0070] The application provides a stable noise-proof equipment for self-adapting adjustment of a gas combination valve, reduces friction noise through dynamic lubrication, and realizes lubricating oil circulation and self-maintenance. The core innovation points are as follows:

[0071] 1. Lubricating and noise-reducing assembly: the lubricating cavity wraps the main valve disc, the corrugated sealing pipe is dynamically sealed, and friction is reduced;

[0072] 2. Circulation assembly: the lubricating oil circulation is driven by negative pressure, and the one-way valve ensures one-way flow;

[0073] 3. Filtering and unlocking system: the filter plate intercepts impurities, is automatically unlocked and triggers an alarm when blocked;

[0074] 4. Blocking assembly: the filter plate is automatically sealed during maintenance, and lubricating oil leakage is avoided.

[0075] 5. Technical effects:

[0076] (1) The friction of the main valve disc is reduced by more than 60%, and the noise is reduced by 40 dB;

[0077] (2) Lubricating oil circulation efficiency is improved, and maintenance cycle is extended by 3 times;

[0078] (3) Automatic alarm for filter blockage, and maintenance response time is shortened by 80%.

[0079] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A stable noise prevention device for self-adapting adjustment of a gas combination valve, characterized by, The utility model relates to a valve body (1), valve seat (4), main valve disc (7), lubrication noise reduction subassembly (9), circulating subassembly (10), valve seat (4) sets up in the middle part of the inner chamber of valve body (1), main valve disc (7) is installed in the inner chamber of valve seat (4) and is movable, lubrication noise reduction subassembly (9) is set up in the inside of valve seat (4), and is located the bottom end outside of main valve disc (7), lubrication noise reduction subassembly (9) including lubrication cavity (901), first corrugated sealing pipe (902) and second corrugated sealing pipe (903), lubrication cavity (901) is set up in the inside of valve seat (4), and is located the bottom end outside of main valve disc (7), inside fills lubricating oil to reduce friction, first corrugated sealing pipe (902) fixed mounting between the top end of main valve disc (7) and the inner wall of valve seat (4), second corrugated sealing pipe (903) is set up between the bottom of main valve disc (7) and the inner wall of valve seat (4), circulating subassembly (10) including one-way oil discharge valve (101), one-way oil discharge valve (101) is set up in the inside of valve seat (4), the inside of valve seat (4) is provided with the one-way oil inlet valve (102) located the just below of one-way oil discharge valve (101), one-way oil discharge valve (101) and one-way oil inlet valve (102) are fixedly connected with oil storage tank (11) through pipeline, the inside of valve seat (4) is also provided with the blocking baffle (103) between lubrication noise reduction subassembly (9) and one-way oil inlet valve (102) and the power component (104) located the above of lubrication noise reduction subassembly (9), the power component (104) including first pneumatic cylinder (1041), connecting spring (1042), air passage (1043), air cavity (1044), pneumatic piston rod (1045) and piston ring (1046), first pneumatic cylinder (1041) fixed mounting in the inside of valve seat (4), and located lubrication cavity (901) top side, the output end of first pneumatic cylinder (1041) is elastically connected with the inner wall of first pneumatic cylinder (1041) shell through connecting spring (1042), air cavity (1044) is set up in the inside of valve seat (4), and is located first pneumatic cylinder (1041) side, air cavity (1044) is communicated with the inner chamber of first pneumatic cylinder (1041) through air passage (1043), pneumatic piston rod (1045) is installed in air cavity (1044) and is fixedly connected with the top of blocking baffle (103) bottom end, piston ring (1046) fixed mounting in the bottom of first pneumatic cylinder (1041) output end.

2. The stable noise preventing apparatus for adjusting a gas combination valve according to claim 1, wherein: The top of valve body (1) is provided with valve cover (2), and the inside of valve cover (2) and the top of valve body (1) are provided with top rod mechanism (3).

3. The stable noise reduction device for self-adapting adjustment of a gas combination valve according to claim 1, characterized in that: The both sides of valve body (1) are provided with air inlet (5) and exhaust port (6) respectively, and main valve disc (7) is elastically connected with the inner chamber of valve seat (4) through first power spring (8).

4. The stable noise reduction device for self-adapting adjustment of a gas combination valve according to claim 1, characterized in that: The inner cavity of the oil storage tank (11) is provided with a filter plate (12) below the one-way oil discharge valve (101) side, one end of the top of the oil storage tank (11) is fixedly connected with an oil supplement valve pipe (16), and the top of the inner cavity of the oil storage tank (11) is movably installed with a movable disc (13) on the bottom surface of the oil supplement valve pipe (16).

5. The stable noise reduction device for self-adapting adjustment of a gas combination valve according to claim 4, characterized in that: The oil storage tank (11) is provided with a blocking assembly (14) on one side surface, the blocking assembly (14) comprises a shielding plate (1401), a second pneumatic cylinder (1402) and an air pipe (1403), the shielding plate (1401) is movably installed on one side of the inner cavity of the oil storage tank (11), the second pneumatic cylinder (1402) is fixedly installed on one side of the surface of the oil storage tank (11), and the second pneumatic cylinder (1402) is fixedly connected with the top inner cavity of the oil storage tank (11) through the air pipe (1403).

6. The stable noise reduction device for self-adapting adjustment of a gas combination valve according to claim 5, characterized in that: The other side of the oil storage tank (11) is provided with an unlocking assembly (15) above the filter plate (12), the unlocking assembly (15) comprises a locking block (1501), a limiting rod (1502), a movable frame (1503), a second power spring (1504) and a top frame (1505), the limiting rod (1502) is fixedly installed in the inner cavity of the other side of the oil storage tank (11) and located outside the filter plate (12), the movable frame (1503) is movably installed on the surface of the limiting rod (1502), the locking block (1501) is fixedly installed on the inner side of the bottom end of the movable frame (1503) and located inside the filter plate (12), the movable frame (1503) is elastically connected with the inner wall of the oil storage tank (11) through the second power spring (1504), and the top frame (1505) is movably installed on the middle of the top end of the oil storage tank (11), and the inner side slope of the top of the movable frame (1503) is in sliding connection with the outer side slope of the top frame (1505).

7. The stable noise reduction device for self-adapting adjustment of a gas combination valve according to claim 6, characterized in that: The inner wall of the second power spring (1504) is in sliding connection with the surface of the limiting rod (1502).

8. The stable noise-proof device for self-adapting adjustment of gas combination valve according to claim 6, characterized in that: The top of the oil storage tank (11) is provided with a pressure sensing alarm (17) above the middle of the top frame (1505).

9. The stable noise reduction device for self-adapting adjustment of a gas combination valve according to claim 8, characterized in that: The unlocking assembly (15) is further connected with the pressure sensing alarm (17), and sends an alarm signal when the top frame (1505) is triggered.

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