Shock-resistant diesel engine air valve

Abstract

The utility model provides an anti-impact diesel engine air valve, which relates to the technical field of diesel engine air valves and comprises a box body, a fixed cylinder is fixed and communicated at the top of the box body and close to the center, a first ring groove is arranged on the inner wall of the fixed cylinder, and springs are fixedly connected with the inner walls of the top and the bottom of the first ring groove. The other end of each spring is fixedly connected with a baffle ring, a piston is arranged in the fixing cylinder, and a circular groove is formed in the bottom of the piston. The motor drives the rotary column to rotate, the rotary column rotates to drive the cam to rotate, the cam rotates to drive the piston to ascend and descend through the valve rod, then the piston ascends and descends to impact the baffle ring, the impact strength can be relieved through the spring and the high-temperature-resistant rubber ring plate in the impact process, and the effect of protecting the piston can be achieved; meanwhile, the inertia of the piston can be relieved, the effect of relieving loads of the cam and the valve rod can be achieved, and therefore the effect of prolonging the service life of the air valve can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to diesel engine air valve technical field especially relates to a kind of impact-resistant diesel engine air valve. BACKGROUND

[0002] With the acceleration of global industrialization process, diesel engine as important power source, in ship, power generation, engineering machinery and heavy truck and many other fields play key role.In these application scenarios, diesel engine usually needs to run under harsh environment for a long time high load.

[0003] Diesel engine works, air valve frequently opens and closes.In closing instant, extremely strong collision between air valve valve disc and valve seat will occur.The impact force generated in this collision process is huge, under long-term action, air valve and valve seat are extremely vulnerable to damage.On the one hand, the sealing surface of valve disc and valve seat will appear wear, scratch and other problems due to impact, leading to air valve seal is not strict, and then make diesel engine appear gas leakage phenomenon.This not only will reduce the power output of diesel engine, make equipment power shortage, also can cause fuel consumption to increase, operating cost rises greatly, therefore, need a kind of impact-resistant diesel engine air valve to solve the above problems. SUMMARY

[0004] The utility model aims at solving the problem that in prior art, diesel engine works, air valve frequently opens and closes.In closing instant, extremely strong collision between air valve valve disc and valve seat will occur.The impact force generated in this collision process is huge, under long-term action, air valve and valve seat are extremely vulnerable to damage, and proposes a kind of impact-resistant diesel engine air valve.

[0005] To achieve the above object, the utility model adopts the following technical scheme: a kind of impact-resistant diesel engine air valve, including box, the top of the box and close to the center place is fixed and is communicated with fixed cylinder, the inner wall of the fixed cylinder is equipped with the first annular groove, the top and bottom inner wall of the first annular groove are all fixedly connected with spring, the other end of the spring is all fixedly connected with baffle ring, the inside of the fixed cylinder is equipped with piston, the bottom of the piston is equipped with circular groove, the inside of the circular groove is fixedly connected with fixed rod, the surface of the fixed rod and close to the center place are equipped with valve rod and bearing rotation connection of sleeve, the inner wall of the box and close to the center place are penetrated and bearing rotation connection of rotation column, the surface of the rotation column is equipped with cam and sliding connection of sleeve, the bottom of the valve rod and cam bearing rotation connection.

[0006] Preferably, one side wall of the baffle ring is fixedly connected with a first high-temperature-resistant rubber ring plate, and the top and bottom of the piston are fixedly connected with second high-temperature-resistant rubber ring plates.

[0007] Preferably, the outer arc wall of the piston is provided with a second ring groove, and the second ring groove is embedded with a sealing ring plate.

[0008] Preferably, the surface of the fixed rod and on both sides of the valve rod are sleeved and fixedly connected with first limiting sleeves.

[0009] Preferably, the surface of the rotating column and close to the cam side are sleeved and fixedly connected with second limiting sleeves.

[0010] Preferably, the side wall of the box and close to the center are fixedly connected with a motor, and one end of the rotating column is fixedly connected with the output end of the motor.

[0011] Preferably, the inner wall of the box and close to the outer wall are fixedly connected with a limiting ring, and the surface of the limiting ring is provided with three screw holes.

[0012] Preferably, the front surface of the box is embedded with a cover plate, the surface of the cover plate is provided with three mounting holes, and the screw holes are aligned with the mounting holes.

[0013] Preferably, the top of the box and close to the edge are all rounded corners, and the top of the cover plate and close to the two sides are all rounded corners.

[0014] Preferably, one end of the rotating column is embedded and threadedly connected with a mounting piece.

[0015] Compared with the prior art, the utility model has the advantages and positive effects that,

[0016] 1、in the utility model, the motor drives the rotating column to rotate, the rotating column can drive the cam to rotate, the cam can drive the piston to lift through the valve rod, at this time, the piston lifting can impact the baffle ring, and the impact process can slow down the impact degree through the spring and the high-temperature-resistant rubber ring plate, which can protect the piston, can slow down the piston inertia, can slow down the load of the cam and the valve rod, so that the service life of the gas valve can be improved.

[0017] 2、in the utility model, the bolts in the mounting hole and the screw hole can be taken out, which can conveniently maintain and replace the internal components of the box, so that the maintenance and replacement efficiency can be improved. DRAWINGS

[0018] Figure 1 the utility model proposes an overall structure front view of an impact-resistant diesel engine gas valve;

[0019] Figure 2 The present invention provides a rear view of the overall structure of an impact-resistant diesel engine valve;

[0020] Figure 3 A vertical sectional view of the overall structure of an impact-resistant diesel engine valve is provided for this utility model.

[0021] Figure 4 This utility model proposes an impact-resistant diesel engine valve. Figure 3 Enlarged view of the structure of area A in the middle;

[0022] Figure 5 A cross-sectional view of the overall structure of an impact-resistant diesel engine valve is provided for this utility model.

[0023] Legend: 1. Housing; 2. Fixed cylinder; 3. First annular groove; 4. Spring; 5. Retaining ring; 6. Piston; 7. Second annular groove; 8. Sealing ring plate; 9. First high-temperature resistant rubber ring plate; 10. Second high-temperature resistant rubber ring plate; 11. Circular groove; 12. Fixed rod; 13. Valve stem; 14. First limiting sleeve; 15. Rotating column; 16. Cam; 17. Motor; 18. Mounting hole; 19. Second limiting sleeve; 20. Limiting ring; 21. Screw hole; 22. Cover plate. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0026] Example 1, as Figures 1-5 As shown, this utility model provides an impact-resistant diesel engine valve, including a housing 1. A fixed cylinder 2 is fixed and connected to the top of the housing 1 near the center. A first annular groove 3 is formed on the inner wall of the fixed cylinder 2. Springs 4 are fixedly connected to the top and bottom inner walls of the first annular groove 3. A retaining ring 5 is fixedly connected to the other end of each spring 4. A piston 6 is provided inside the fixed cylinder 2. A circular groove 11 is formed at the bottom of the piston 6. A fixed rod 12 is fixedly connected inside the circular groove 11. A valve stem 13 is sleeved on the surface of the fixed rod 12 near the center and rotatably connected by a bearing. A rotating column 15 is passed through one side inner wall of the housing 1 near the center and rotatably connected by a bearing. A cam 16 is sleeved on the surface of the rotating column 15 and slidably connected. The bottom of the valve stem 13 is rotatably connected to the cam 16 by a bearing.

[0027] The overall effect of embodiment 1 is as follows: a fixed cylinder 2 is fixed and connected to the top of the box 1 near the center. The inner wall of the fixed cylinder 2 has a first annular groove 3. Springs 4 are fixedly connected to the top and bottom inner walls of the first annular groove 3. A retaining ring 5 is fixedly connected to the other end of each spring 4. A piston 6 is provided inside the fixed cylinder 2, which can make the retaining ring 5 block the piston 6 and make the piston 6 push the retaining ring 5 to squeeze the spring 4. A circular groove 11 is provided at the bottom of the piston 6. A fixed rod 12 is fixedly connected inside the circular groove 11. A valve stem 13 is fitted onto the surface of the valve stem 12 near its center and rotatably connected to it by a bearing. A rotating column 15 is rotatably connected to the inner wall of one side of the housing 1 near its center and by a bearing. A cam 16 is fitted onto the surface of the rotating column 15 and slidably connected to it. The bottom of the valve stem 13 is rotatably connected to the cam 16 by a bearing. This allows the rotating column 15 to rotate, which in turn drives the cam 16 to rotate. The rotation of the cam 16 can be pulled up or disengaged from the fixed rod 12 by the top of the valve stem 13. The movement of the fixed rod 12 can drive the piston 6 to move up or down. At this time, the movement of the piston 6 can push the retaining ring 5 to compress the spring 4.

[0028] Example 2, as Figures 1-5 As shown, a first high-temperature resistant rubber ring plate 9 is fixedly connected to one side wall of the retaining ring 5, and a second high-temperature resistant rubber ring plate 10 is fixedly connected to the top and bottom of the piston 6; a second annular groove 7 is opened on the outer arc wall of the piston 6, and a sealing ring plate 8 is embedded in the interior of the second annular groove 7, with the outer arc wall of the sealing ring plate 8 in contact with the inner wall of the first annular groove 3; a first limiting sleeve 14 is sleeved and fixedly connected to the surface of the fixing rod 12 and on both sides of the valve stem 13; a second limiting sleeve 19 is sleeved and fixedly connected to the surface of the rotating column 15 and on the side near the cam 16; the housing 1 A motor 17 is fixedly connected to one side wall of the housing 1 near the center, and the output end of the motor 17 is fixedly connected to one end of the rotating column 15; a limit ring 20 is fixedly connected to the inner wall of the housing 1 near the outer wall, and the surface of the limit ring 20 has three screw holes 21; a cover plate 22 is embedded in the front of the housing 1, and the surface of the cover plate 22 has three mounting holes 18, and the screw holes 21 are aligned with the mounting holes 18; the top of the housing 1 and the area near the edge are rounded, and the top of the cover plate 22 and the area near both sides are rounded; a mounting component is embedded and threadedly connected to one end of the rotating column 15.

[0029] The effect achieved by the whole embodiment 2 is that the first high-temperature-resistant rubber ring plate 9 is fixedly connected to the side wall of the baffle ring 5, and the second high-temperature-resistant rubber ring plate 10 is fixedly connected to the top and bottom of the piston 6, which can slow down the impact force; the second ring groove 7 is opened in the outer arc wall of the piston 6, the sealing ring plate 8 is embedded in the second ring groove 7, and the outer arc wall of the sealing ring plate 8 is attached to the inner wall of the first ring groove 3, which can seal and fix the sealing ring plate 8 in the outer arc wall of the piston 6 to the inner wall of the fixed cylinder 2; the first limiting sleeve 14 is sleeved and fixedly connected to the surface of the fixed rod 12 and located on both sides of the valve rod 13, which can limit one end of the valve rod 13; the second limiting sleeve 19 is sleeved and fixedly connected to the surface of the rotating column 15 and close to one side of the cam 16, which can limit the cam 16; the motor 17 is fixedly connected to the output end of the rotating column 15 and located close to the center of one side wall of the box body 1, which can drive the rotating column 15 to rotate; the limiting ring 20 is fixedly connected to the inner wall of the box body 1 and close to the outer wall, and three screw holes 21 are opened in the surface of the limiting ring 20, which can embed the screws in the screw holes 21; the cover plate 22 is embedded in the front of the box body 1, three mounting holes 18 are opened in the surface of the cover plate 22, and the screw holes 21 are aligned with the mounting holes 18, which can fix the cover plate 22 by penetrating the mounting holes 18 with screws; the top of the box body 1 and the cover plate 22 close to the edges are all rounded, which can prevent the top sharp corners of the box body 1 and the cover plate 22 from hurting people; the mounting piece is embedded and threadedly connected to one end of the rotating column 15, which can fix the cam 16.

[0030] Working principle: the motor 17 drives the rotating column 15 to rotate, the rotating column 15 rotates to drive the cam 16 to rotate, the cam 16 rotates to drive one end of the valve rod 13 to rotate around the center of the rotating column 15, at this time the other end of the valve rod 13 can pull or push the fixed rod 12, the fixed rod 12 can drive the piston 6 to rise and fall, at this time the piston 6 can impact the baffle ring 5, and the spring 4 can be compressed in the impact process, at this time the first high-temperature-resistant rubber ring plate 9 can collide with the second high-temperature-resistant rubber ring plate 10 to slow down the impact force, which can protect the piston 6 and slow down the inertia of the piston 6, which can reduce the load of the cam 16 and the valve rod 13, thereby prolonging the service life of the air valve, and the cover plate 22 can be opened by removing the bolts in the mounting holes 18 and the screw holes 21, which can facilitate the maintenance and replacement of the internal components of the box body 1, thereby improving the maintenance and replacement efficiency.

[0031] The wiring diagram of the piston 6, the first high-temperature-resistant rubber ring plate 9, the second high-temperature-resistant rubber ring plate 10, the valve rod 13 and the motor 17 belongs to the common knowledge in the field, and the working principle is a known technology, and the model is selected according to actual use, so the control mode and the wiring arrangement of the piston 6, the first high-temperature-resistant rubber ring plate 9, the second high-temperature-resistant rubber ring plate 10, the valve rod 13 and the motor 17 are not explained in detail.

[0032] The above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms, and any skilled person in the art can change or modify the above disclosed technical content into equivalent embodiments applied to other fields, but as long as the technical scheme content is not deviated, any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model still belongs to the protection scope of the utility model technical scheme.

Claims

1. An impact-resistant diesel engine valve comprising a box (1), characterised in that: The top of the box (1) and close to the center is fixed and communicated with a fixed cylinder (2), the inner wall of the fixed cylinder (2) is provided with a first ring groove (3), the top and bottom inner walls of the first ring groove (3) are fixedly connected with springs (4), the other ends of the springs (4) are fixedly connected with stop rings (5), the inside of the fixed cylinder (2) is provided with a piston (6), the bottom of the piston (6) is provided with a circular groove (11), the inside of the circular groove (11) is fixedly connected with a fixed rod (12), the surface of the fixed rod (12) and close to the center is sleeved and bearing rotary connected with a valve rod (13), the side inner wall of the box (1) and close to the center is penetratingly and bearing rotary connected with a rotating column (15), the surface of the rotating column (15) is sleeved and slidingly connected with a cam (16), the bottom of the valve rod (13) is bearing rotary connected with the cam (16).

2. An impact-resistant diesel engine valve according to claim 1, characterized in that: The side wall of the stop ring (5) is fixedly connected with a first high-temperature-resistant rubber ring plate (9), the top and bottom of the piston (6) are fixedly connected with a second high-temperature-resistant rubber ring plate (10).

3. An impact-resistant diesel engine valve according to claim 1, characterized in that: The outer arc wall of the piston (6) is provided with a second ring groove (7), the inside of the second ring groove (7) is embedded with a sealing ring plate (8), the outer arc wall of the sealing ring plate (8) is attached to the inner wall of the first ring groove (3).

4. An impact-resistant diesel engine valve according to claim 1, characterized in that: The surface of the fixed rod (12) and located on both sides of the valve rod (13) is sleeved and fixedly connected with a first limiting sleeve (14).

5. An impact-resistant diesel engine valve according to claim 1, characterized in that: The surface of the rotating column (15) and close to one side of the cam (16) is sleeved and fixedly connected with a second limiting sleeve (19).

6. An impact-resistant diesel engine valve according to claim 1, characterized in that: The side wall of the box (1) and close to the center is fixedly connected with a motor (17), one end of the motor (17) is fixedly connected with the rotating column (15).

7. An impact-resistant diesel engine valve according to claim 1, characterized in that: The inner wall of the box (1) and close to the outer wall is fixedly connected with a limiting ring (20), the surface of the limiting ring (20) is provided with three screw holes (21).

8. An impact-resistant diesel engine valve according to claim 7, characterized in that: The front surface of the box (1) is embedded with a cover plate (22), the surface of the cover plate (22) is provided with three mounting holes (18), the screw holes (21) are aligned with the mounting holes (18).

9. An impact-resistant diesel engine valve according to claim 8, characterized in that: The top of the box (1) and close to the edge are all rounded corners, the top of the cover plate (22) and close to both sides are all rounded corners.

10. An impact-resistant diesel engine valve according to claim 1, characterized in that: One end of the rotating column (15) is embedded and threadedly connected with a mounting piece.

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