A new type of anti-backfire throttle

Abstract

The present application discloses a novel anti-backfire throttle valve, including a vent pipe, the inner wall of which is provided with a rotating shaft, and the outside of the rotating shaft is provided with a brass disc; and a driving motor, which is connected to the outside of the vent pipe and is used to drive the rotating shaft to rotate, and the thickness of the brass disc is 2-4 mm. The novel anti-backfire throttle valve described in the present invention has the following characteristics: 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, and by increasing the thickness of the disc, the probability of disc deformation can be further avoided; second, by providing positioning cylinders at both ends of the disc and providing an arc-shaped conical sheet at one end of the extension cylinder, the inner wall of the vent pipe can be squeezed during backfire to reduce the force applied to the disc, thereby preventing the disc from deforming due to force.

Description

Technical Field

[0001] The invention relates to the technical field of throttle valves, in particular to a novel anti-backfire throttle valve. Background Art

[0002] The throttle is a controllable valve that controls the air entering the engine. After the gas enters the intake pipe, it mixes with the natural gas to become a combustible mixture, which is then burned to produce work. It is connected to the air after supercharging and intercooling at the top and the engine intake pipe at the bottom. It is called the throat of the car engine.

[0003] The load of the natural gas engine is achieved by controlling the intake volume through the throttle. Most of the current natural gas engines use a single-point injection premixing route, that is, the intake manifold contains a mixture of air and gas, while the National VI natural gas engine combustion technology route is mostly equivalent combustion + EGR. This technology route has a higher combustion temperature, and the valves and seat rings are more prone to wear. After wear, the engine's high-temperature and high-pressure combustion gas rushes into the intake pipe, ignites the mixture in the intake manifold, and generates high-temperature and high-pressure gas that impacts the throttle upstream of the intake pipe. If the throttle is not strong enough, the throttle butterfly is easily bent, the engine air volume is uncontrolled, and the vehicle power is out of control, affecting driving safety. To avoid the above problems, the anti-backfire capability of the National VI gas engine throttle must be upgraded to ensure that when the engine backfires due to a malfunction, the throttle will not be deformed to ensure that the vehicle power is controllable. To this end, we propose a new anti-backfire throttle. Summary of the invention

[0004] The main purpose of the present invention is to provide a novel anti-backfire throttle valve, which can effectively solve the problems in the background technology.

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

[0006] A novel anti-backfire throttle valve, comprising:

[0007] A vent pipe, the inner wall of which is provided with a rotating shaft, and the outside of the rotating shaft is provided with a brass disc; and a driving motor, which is connected to the outside of the vent pipe and is used for driving the rotating shaft to rotate.

[0008] Preferably, the brass disc has a thickness of 2-4 mm.

[0009] Preferably, a cover plate is connected to the rear end of the drive motor.

[0010] Preferably, a protective mechanism is provided on the outside of the brass disc, wherein:

[0011] The protection mechanism includes a cylindrical positioning tube connected to the top of the brass disc and an extension tube inserted into the positioning tube. One end of the extension tube is connected to the inner wall of the positioning tube through a spring, and the other end of the extension tube is connected to an arc-shaped cone.

[0012] Preferably, the conical piece is connected to the outer wall of the brass disc via a slide rail.

[0013] Preferably, the cross section of the conical piece is a right-angled trapezoid.

[0014] Preferably, a circular ring-shaped rib is provided inside the vent pipe, and the rib corresponds to the outer edge of the brass disc, and the thickness of the rib is equal to the thickness of the brass disc.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 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 can be further avoided;

[0017] Secondly, by arranging positioning cylinders at both ends of the disc and arranging an arc-shaped tapered piece at one end of the extension cylinder, the inner wall of the ventilation pipe can be squeezed during tempering to reduce the force applied to the disc, thereby preventing the disc from being deformed due to force. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an overall structural diagram of a novel anti-backfire throttle valve of the present invention;

[0019] Figure 2 A cross-sectional view of a novel anti-backfire throttle valve of the present invention;

[0020] Figure 3 A novel anti-backfire throttle valve according to the present invention Figure 2 A magnified view of the structure in the middle;

[0021] Figure 4 This is a structural diagram of a new type of butterfly valve in an anti-backfire throttle valve of the present invention.

[0022] In the figure: 1. driving motor; 2. brass disc; 3. rotating shaft; 4. vent pipe; 5. cover plate; 6. positioning tube; 7. extension tube; 8. conical piece. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0024] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0025] Embodiment 1

[0026] Reference Figure 1 and Figure 2 As shown, a novel anti-backfire throttle valve comprises:

[0027] A vent pipe 4, the inner wall of which is provided with a rotating shaft 3, and the outer part of the rotating shaft 3 is provided with a brass disc 2; and

[0028] The driving motor 1 is connected to the outside of the vent pipe 4 and is used to drive the rotating shaft 3 to rotate.

[0029] Reference Figure 2 , the thickness of the brass disc 2 is 2-4 mm.

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

[0031] When in use, the driving motor 1 is controlled to drive the rotating shaft 3 to rotate, and the rotating shaft 3 then drives the brass disc 2 installed on the outside thereof to rotate, so that the brass disc 2 is parallel to the air flow direction. At this time, the air flows through the vent pipe 4 and enters the engine. When the vent pipe 4 needs to be closed, the driving motor 1 is controlled to drive the brass disc 2 to rotate 90° to block the vent pipe 4, so that the air cannot flow along the vent pipe 4. Secondly, the brass disc 2 has better yield resistance than the traditional aluminum alloy disc. Calculations show that for discs of the same thickness, the strength of the brass material is 1.6 times that of the aluminum alloy, which can better resist engine backfire. At the same time, by increasing the thickness of the disc, the optimal structure is achieved, which can further prevent the disc from deforming.

[0032] Embodiment 2

[0033] Reference Figure 2-4 As shown, a protective mechanism is provided on the outside of the brass disc 2, wherein:

[0034] The protection mechanism includes a cylindrical positioning tube 6 connected to the top of the brass disc 2 and an extension tube 7 inserted into the positioning tube 6. One end of the extension tube 7 is connected to the inner wall of the positioning tube 6 through a spring, and an arc-shaped conical piece 8 is connected to the other end of the extension tube 7.

[0035] Reference Figure 4 The conical piece 8 is connected to the outer wall of the brass disc 2 through a slide rail.

[0036] Reference Figure 3 The cross section of the conical piece 8 is a right-angled trapezoid.

[0037] Reference Figure 2 and Figure 3A circular rib is provided inside the vent pipe 4, and when the brass disc 2 seals the vent pipe 4, the rib corresponds to the outer edge of the brass disc 2, the spacing between the two groups of conical sheets 8 is equal to the thickness of the rib, and the thickness of the rib is equal to the thickness of the brass disc 2.

[0038] When tempering occurs, the air impacts the brass disc 2. Since the conical pieces 8 on both sides of the brass disc 2 have a trapezoidal cross-section and are movable, when the air blows toward the brass disc 2, the conical pieces 8 are moved outward by the wind and are stuck to the outside of the retaining edge inside the vent pipe 4. Therefore, when the brass disc 2 is bent after being subjected to force, the conical piece 8 connected to the outside of the brass disc 2 is blocked by the retaining edge. Therefore, when the brass disc 2 is subjected to force, the conical piece 8 is driven to move, and the conical piece 8 cannot move backward, so it can block the brass disc 2 from moving backward, thereby preventing the brass disc 2 from deforming.

[0039] When the wind speed decreases, the impact force of the air on the conical piece 8 decreases. Since the extension tube 7 and the positioning tube 6 are connected by a spring, when the conical piece 8 is not subjected to force, the extension tube 7 moves toward the positioning tube 6 under the action of the spring, so that the conical piece 8 connected with the extension tube 7 shrinks toward the center of the brass disc 2. At this time, the conical piece 8 moves away from the outside of the retaining edge. When the brass disc 2 rotates, the conical piece 8 will not affect the normal rotation of the brass disc 2. In summary, the brass disc 2 can be fixed during tempering, and the normal rotation of the brass disc 2 will not be affected during air intake.

[0040] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A new type of anti-backfire throttle valve, characterized in that: include: A vent pipe (4) has a rotating shaft (3) disposed on its inner wall, and a brass disc (2) disposed on the outside of the rotating shaft (3); and A driving motor (1) connected to the outside of the ventilation pipe (4) and used for driving the rotating shaft (3) to rotate; The thickness of the brass disc (2) is 2-4 mm; The rear end of the driving motor (1) is connected to a cover plate (5); The brass disc (2) is provided with a protective mechanism on the outside, wherein: The protection mechanism comprises a cylindrical positioning tube (6) connected to the top of the brass disc (2) and an extension tube (7) inserted into the positioning tube (6), one end of the extension tube (7) is connected to the inner wall of the positioning tube (6) through a spring, and an arc-shaped conical piece (8) is connected to the other end of the extension tube (7); The conical piece (8) is connected to the outer wall of the brass disc (2) via a slide rail; The cross section of the conical piece (8) is a right-angled trapezoid; The interior of the ventilation pipe (4) is provided with a circular ring-shaped retaining edge, and the retaining edge corresponds to the outer edge of the brass disc (2), and the thickness of the retaining edge is equal to the thickness of the brass disc (2); When in use, the driving motor (1) is controlled to drive the rotating shaft (3) to rotate, and the rotating shaft (3) then drives the brass disc (2) mounted on the outside thereof to rotate, so that the brass disc (2) is parallel to the air flow direction. At this time, the air flows through the vent pipe (4) and enters the engine. When the vent pipe (4) needs to be closed, the driving motor (1) is controlled to drive the brass disc (2) to rotate 90 degrees, so as to block the vent pipe (4) and prevent the air from flowing along the vent pipe (4).

Images