A high-strength throttle valve

Abstract

The present application discloses a high-strength throttle valve, an air vent pipe, which is internally and movably provided with a rotating shaft, and a brass disc is connected to the outside of the rotating shaft, and a baffle is arranged inside the air vent pipe; and a strengthening mechanism, which includes two limiting clips connected to the rotating shaft and multiple guide rods connected between the two limiting clips, and the guide rods are inserted outside the brass disc, and a spring is arranged between the brass discs. For the high-strength throttle valve of the present invention, first, the structure of the present application is simple and reasonable, and by replacing the material of the throttle disc, the requirement of increasing the strength of the throttle disc can be achieved. At the same time, by increasing the thickness of the disc, the probability of disc deformation is further reduced; second, by arranging a spring between the guide rod and the brass disc and arranging a baffle on the inner wall of the air vent pipe, the two sides of the brass disc can be supported during tempering, thereby reducing the force on the disc, and thus preventing the disc from deforming due to force.

Description

Technical Field

[0001] The present invention relates to the technical field of throttle valves, and particularly to a high-strength throttle valve. Background Art

[0002] The throttle valve is a controllable valve that controls the air entering the engine. After the gas enters the intake pipe, it will mix with natural gas to form a combustible mixture, which then burns to do work. It is connected to the air after supercharging and intercooling at the upper part and the engine intake pipe at the lower part, and is known as the throat of the automotive engine;

[0003] The load of the natural gas engine is achieved by controlling the intake air volume through the throttle valve. Currently, most natural gas engines adopt the single-point injection pre-mixing route, that is, the mixture of air and gas is in the intake manifold. And most of the combustion technology routes of the National VI natural gas engines are stoichiometric combustion + EGR. This technology route has a higher combustion temperature, and the valve and seat ring are more prone to wear. After wear, the high-temperature and high-pressure combustion gas in the engine rushes into the intake pipe, igniting the mixture in the intake manifold, generating high-temperature and high-pressure gas to impact the throttle valve upstream of the intake pipe. If the strength of the throttle valve is insufficient, the throttle butterfly valve is easily bent by the explosion, the air volume of the engine is out of control, and the vehicle power is out of control, affecting driving safety. To avoid the above problems, it is necessary to upgrade the anti-backfire ability of the throttle valve of the National VI gas engine to ensure that when the engine has a backfire due to a fault, the throttle valve will not be deformed by the explosion and the vehicle power can be controlled. For this reason, we propose a high-strength throttle valve. Summary of the Invention

[0004] The main purpose of the present invention is to provide a high-strength throttle valve, which can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A high-strength throttle valve, which includes:

[0007] A ventilation pipe, inside which a rotating shaft is movably installed, and a disk-shaped brass butterfly is connected to the outside of the rotating shaft, and an arc-shaped baffle is arranged on the inner wall of the ventilation pipe; and

[0008] A strengthening mechanism, which includes two limiting clips connected to the rotating shaft and multiple guiding rods connected between the two limiting clips. The guiding rods are inserted outside the brass butterfly, and a spring is arranged between the outer wall of the brass butterfly and the outside of the brass butterfly.

[0009] Preferably, the throttle valve further includes a driving motor, which is installed outside the ventilation pipe and is used to drive the rotation of the rotating shaft.

[0010] Preferably, a cover plate is connected to the rear end of the driving motor.

[0011] Preferably, there are two sets of the retaining edges, which are respectively located on the inner walls on both sides of the ventilation pipe.

[0012] Preferably, the thickness of the brass disc is 2 - 4 mm.

[0013] Preferably, the brass disc is located above the retaining edge, and the distance between the two sets of retaining edges is less than the diameter of the brass disc.

[0014] Preferably, through holes are provided on the outside of the brass disc, and the brass disc is inserted into the guide rods on the inner wall of the limit clip through the through holes provided on its outside.

[0015] Preferably, the limit clip and the brass disc are parallel to each other, and when the brass disc is parallel to the retaining edge, the distance between the brass disc and the retaining edge is less than one-third of the length of the guide rod, wherein the thickness of the brass disc is one-third of the length of the guide rod.

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

[0017] First, the structure of the present application is simple and reasonable, and by replacing the material of the throttle disc, the requirement of increasing the strength of the throttle disc can be achieved. At the same time, by increasing the thickness of the disc, the probability of disc deformation is further reduced.

[0018] Second, by arranging a spring between the guide rod and the brass disc and arranging retaining edges on the inner wall of the ventilation pipe, the two sides of the brass disc can be supported during tempering, thereby reducing the force on the disc, preventing the disc from deforming due to force, and improving the safety of the device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall structure diagram of a high-strength throttle of the present invention;

[0020] Figure 2 is the structure diagram of the ventilation pipe and the brass disc in a high-strength throttle of the present invention;

[0021] Figure 3 is the cross-sectional view of a high-strength throttle of the present invention;

[0022] Figure 4 is a high-strength throttle of the present invention Figure 3 and the enlarged view of structure A therein.

[0023] In the figure: 1, drive motor; 2, brass disc; 3, rotating shaft; 4, ventilation pipe; 5, cover plate; 6, limit clip; 7, retaining edge; 8, guide rod. DETAILED DESCRIPTION OF THE INVENTION

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Among them, the same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component respectively.

[0026] Example 1

[0027] Referring to Figure 1 and Figure 2 as shown, a high-strength throttle valve, which includes:

[0028] A vent pipe 4, inside which a rotating shaft 3 is movably installed, and a disc-shaped brass disc 2 is connected to the outside of the rotating shaft 3, and an arc-shaped retaining edge 7 is provided on the inner wall of the vent pipe 4; and

[0029] A driving motor 1, which is installed outside the vent pipe 4 and is used to drive the rotating shaft 3 to rotate.

[0030] Referring to Figure 1 as shown, a cover plate 5 is connected to the rear end of the driving motor 1.

[0031] Referring to Figure 2 , there are two groups of retaining edges 7, which are respectively located on the inner walls on both sides of the vent pipe 4.

[0032] Referring to Figure 1 and Figure 2 , the thickness of the brass disc 2 is 2 - 4 mm.

[0033] During use, control the driving motor 1 to drive the rotating shaft 3 to rotate, and then drive the brass disc 2 installed on its outside to rotate by the rotating shaft 3, so that the brass disc 2 is parallel to the air flow direction. At this time, air flows through the vent pipe 4 and enters the engine. When it is necessary to close the vent pipe 4, then control the driving motor 1 to drive the brass disc 2 to rotate 90°, blocking the vent pipe 4 so that air cannot flow along the vent pipe 4. Secondly, compared with the traditional aluminum alloy disc, the brass disc 2 has better yield resistance. Through calculation, for discs with the same thickness, the strength of the brass disc is 1.6 times that of the aluminum alloy, and it can better resist engine backfire. At the same time, by increasing the thickness of the disc to make it reach the optimal structure, the deformation of the disc can be further prevented.

[0034] Example 2

[0035] Referring to Figure 1 and Figure 2 as shown, a high-strength throttle valve, which includes:

[0036] A vent pipe 4, inside which a rotating shaft 3 is movably installed, and a disc-shaped brass disc 2 is connected to the outside of the rotating shaft 3, and an arc-shaped baffle 7 is arranged on the inner wall of the vent pipe 4; and

[0037] A strengthening mechanism, which includes two limiting clips 6 connected to the rotating shaft 3 and multiple guide rods 8 connected between the two limiting clips 6, and the guide rods 8 are inserted outside the brass disc 2, and a spring is arranged between the outer wall of the brass disc 2 and the outside of the brass disc 2.

[0038] Refer to Figure 2 , the brass disc 2 is located above the baffle 7, and the distance between the two baffles 7 is less than the diameter of the brass disc 2.

[0039] Refer to Figure 3 and Figure 4 , through holes are formed in the outside of the brass disc 2, and the brass disc 2 is inserted into the guide rods 8 on the inner wall of the limiting clip 6 through the through holes formed in its outside.

[0040] Refer to Figure 3 and Figure 4 , the limiting clip 6 and the brass disc 2 are parallel to each other, and when the brass disc 2 is parallel to the baffle 7, the distance between the brass disc 2 and the baffle 7 is less than one-third of the length of the guide rod 8, wherein the thickness of the brass disc 2 is one-third of the length of the guide rod 8.

[0041] When backfire occurs, the air impacts towards the brass disc 2. Since the brass disc 2 blocks the air, when the air blows towards the brass disc 2, the brass disc 2 moves towards the air impact direction. At this time, the brass disc 2 squeezes the spring outside the guide rod 8, so that the spring on one side of the brass disc 2 is compressed and the spring on the other side is stretched, and contacts the baffle 7 on both inner walls of the vent pipe 4. Since the baffle 7 is connected to the inner wall of the vent pipe 4, not only can the brass disc 2 not move backward after contacting the baffle 7, but at this time, the baffle 7 supports the outside of the brass disc 2, and the limiting clip 6 supports the middle position of the brass disc 2, which can prevent the brass disc 2 from deforming due to uneven stress.

[0042] When the wind speed decreases, the impact force of the air on the brass disc 2 decreases. Since the brass disc 2 and the limiting clip 6 are connected by a spring, when the brass disc 2 is not stressed, it moves towards the center direction of the limiting clip 6 under the action of the spring, so that the brass disc 2 is separated from the baffle 7. At this time, the brass disc 2 can rotate under the action of the driving motor 1. In summary, it can fix the brass disc 2 during backfire, and during air intake, it will not affect the normal rotation of the brass disc 2, thereby improving the safety and stability of the device.

[0043] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A high-strength throttle valve, characterized in that, The throttle valve includes: A vent pipe (4) with a rotating shaft (3) movably installed inside it. A disc-shaped brass disc (2) is connected to the outside of the rotating shaft (3), and an arc-shaped stop edge (7) is provided on the inner wall of the vent pipe (4); and A strengthening mechanism, which includes two sets of limit clips (6) connected to the rotating shaft (3) and multiple sets of guide rods (8) connected between the two sets of limit clips (6). The guide rods (8) are inserted outside the brass disc (2), and a spring is provided between the outer wall of the brass disc (2) and the outside of the brass disc (2); the spring is sleeved on the guide rod (8) and is located between the outer wall of the brass disc (2) and the limit clip (6); The throttle valve further includes a drive motor (1), which is installed outside the vent pipe (4) and is used to drive the rotation of the rotating shaft (3); There are two sets of the stop edges (7), which are respectively located on the inner walls on both sides of the vent pipe (4); The thickness of the brass disc (2) is 2 - 4 mm; The brass disc (2) is located above the stop edge (7), and the distance between the two sets of stop edges (7) is less than the diameter of the brass disc (2); Through holes are provided on the outside of the brass disc (2), and the brass disc (2) is inserted into the guide rod (8) on the inner wall of the limit clip (6) through the through holes provided on its outside; The limit clip (6) and the brass disc (2) are parallel to each other. When the brass disc (2) is parallel to the stop edge (7), the distance between the brass disc (2) and the stop edge (7) is less than one-third of the length of the guide rod (8). Among them, the thickness of the brass disc (2) is one-third of the length of the guide rod (8); When backfire occurs, the air impacts the brass disc (2) and makes it move in the impact direction, squeezing the spring sleeved on the guide rod (8), causing one side of the spring to be compressed and the other side to be stretched. The brass disc (2) contacts the stop edges (7) on the inner walls on both sides of the vent pipe (4). The stop edge (7) forms a support for the outside of the brass disc (2), and the limit clip (6) supports the middle position of the brass disc (2) to prevent it from deforming under force; when the wind speed decreases, the impact force of the air on the brass disc (2) weakens, and the brass disc (2) moves towards the center of the limit clip (6) under the action of the spring and separates from the stop edge (7), without affecting the rotation of the drive motor (1) driving it.

2. The high-strength throttle valve according to claim 1, wherein: A cover plate (5) is connected to the rear end of the drive motor (1).

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