1. The utility model provides a high-power diesel engine cooling system filler cap for plateau environment which characterized in that includes:

the cover body is of a hollow structure, one end of the cover body is an opening end, the other end of the cover body is a sealing end, the sealing end is provided with a plurality of first air holes, the side surface of the cover body is provided with second air holes, and a stop step is arranged inside the cover body;

an air valve adjustment base removably disposed at the open end;

an air valve body including a top surface, a partition plate, a first bottom surface, a second bottom surface, and an outer ring;

the partition plate, the first bottom surface and the outer ring form a semicircular groove, a plurality of third air holes are formed in the first bottom surface, the top surface and the second bottom surface are arranged at two ends of the partition plate at intervals in parallel, the second bottom surface is slidably clamped with the stop step, and the outer ring and the top surface are in contact with the cover body;

at least one fourth air hole which is arranged on the partition plate in an openable and closable manner;

an air valve spring disposed between the air valve body and the air valve adjusting base;

a steam valve comprising a center stem, a steam valve adjusting nut, and a valve;

one end of the central rod can slidably penetrate through the partition plate and the sealing end, the steam valve adjusting nut is arranged at the other end of the central rod, the valve is of a semicircular structure and is vertically arranged with the central rod, the valve is arranged in the semicircular groove, and the radius of the valve is larger than the distance from the third air hole to the center of the air valve body;

a steam valve spring disposed between the steam valve nut and the air valve body.

2. The high-power diesel engine cooling system water filling port cover for plateau environment as claimed in claim 1, wherein the cover body comprises a first inner wall and a second inner wall, the inner diameter of the first inner wall is larger than the inner diameter of the second inner wall, a stopping step is arranged between the first inner wall and the second inner wall, the radius of the outer ring and the radius of the top surface are both the same as the inner diameter of the second inner wall, and the radius of the second bottom surface is the same as the radius of the first inner wall.

3. The high power diesel engine cooling system filler cap for plateau environment as claimed in claim 2, wherein said plurality of first air holes are all disposed on one side of the center line of said sealing end.

4. The high power diesel engine cooling system filler cap for plateau environment as claimed in claim 3, wherein the radius of the second bottom surface is larger than the radius of the top surface.

5. The high power diesel engine cooling system filler cap for plateau environment as claimed in claim 4, wherein said plurality of third air holes and said plurality of first air holes are vertically disposed.

6. The high power diesel engine cooling system filler cap for plateau environment as claimed in claim 5, further comprising:

the air hole valves are correspondingly arranged on the fourth air holes one by one, and the air hole valves are arranged between the top surface and the second bottom surface;

a spring disposed between the vent valve and the fourth vent.

7. The high power diesel engine cooling system filler cap for plateau environment as claimed in claim 6, further comprising:

and the air filter screens are arranged on the first air holes in a one-to-one correspondence manner.

8. The high power diesel engine cooling system filler cap for plateau environment as described in claim 7, further comprising:

a plurality of bump structures spaced outwardly of the sealing end.

Background

When the vehicle is used in a highland windy and sandy area, when the pressure of the cooling system is lower than a limited pressure, the air valve is opened by outside air, and the outside air enters the cooling system; when the dust content of the outside air is high, the dust in the air is gradually deposited between the air valve and the sealing surface of the water filling port cover body, so that the sealing is not tight; when the pressure of a cooling system rises but is not enough to open a steam valve due to the fact that the cooling liquid is heated to become gaseous in the use of the engine, steam can leak from the sealing surface of the air valve, the cooling liquid is dissipated, the heat dissipation performance of the engine is deteriorated, and a heat damage fault occurs.

Disclosure of Invention

Based on the technical problems, the invention aims to design and develop the water filling port cover of the high-power diesel engine cooling system for the plateau environment, and through the combination of the inward-arranged partition plate air holes and the air valve and the combination of the steam valve and the air valve, the internal pressure of the cooling system can be kept, and the loss of cooling liquid can be avoided.

The technical scheme provided by the invention is as follows:

the utility model provides a high-power diesel engine cooling system filler cap for plateau environment, includes:

the cover body is of a hollow structure, one end of the cover body is an opening end, the other end of the cover body is a sealing end, the sealing end is provided with a plurality of first air holes, the side surface of the cover body is provided with second air holes, and a stop step is arranged inside the cover body;

an air valve adjustment base removably disposed at the open end;

an air valve body including a top surface, a partition plate, a first bottom surface, a second bottom surface, and an outer ring;

the partition plate, the first bottom surface and the outer ring form a semicircular groove, a plurality of third air holes are formed in the first bottom surface, the top surface and the second bottom surface are arranged at two ends of the partition plate at intervals in parallel, the second bottom surface is slidably clamped with the stop step, and the outer ring and the top surface are in contact with the cover body;

at least one fourth air hole which is arranged on the partition plate in an openable and closable manner;

an air valve spring disposed between the air valve body and the air valve adjusting base;

a steam valve comprising a center stem, a steam valve adjusting nut, and a valve;

one end of the central rod can slidably penetrate through the partition plate and the sealing end, the steam valve adjusting nut is arranged at the other end of the central rod, the valve is of a semicircular structure and is vertically arranged with the central rod, the valve is arranged in the semicircular groove, and the radius of the valve is larger than the distance from the third air hole to the center of the air valve body;

a steam valve spring disposed between the steam valve nut and the air valve body.

Preferably, the cover body comprises a first inner wall and a second inner wall, the inner diameter of the first inner wall is larger than that of the second inner wall, a stop step is arranged between the first inner wall and the second inner wall, the radius of the outer ring and the radius of the top surface are both the same as the inner diameter of the second inner wall, and the radius of the second bottom surface is the same as the radius of the first inner wall.

Preferably, the plurality of first air holes are all arranged on one side of a center line of the sealing end.

Preferably, the radius of the second bottom surface is larger than the radius of the top surface.

Preferably, the plurality of third air holes and the plurality of first air holes are vertically arranged.

Preferably, the method further comprises the following steps:

the air hole valves are correspondingly arranged on the fourth air holes one by one, and the air hole valves are arranged between the top surface and the second bottom surface;

a spring disposed between the vent valve and the fourth vent.

Preferably, the method further comprises the following steps:

and the air filter screens are arranged on the first air holes in a one-to-one correspondence manner.

Preferably, the method further comprises the following steps:

a plurality of bump structures spaced outwardly of the sealing end.

The invention has the following beneficial effects:

when the high-power diesel engine cooling system water filling port cover for the plateau environment is used in a plateau windy and sandy area, when the pressure of the cooling system is lower than a limited pressure, outside air opens the partition plate air hole and the air valve and enters the cooling system; meanwhile, when sand and dust carried in the air enters the joint surface of the air valve and the valve seat to cause the leakage of the cooling liquid, the air holes of the partition plate are closed, and a closed cavity is formed in the air valve, so that the loss of the cooling liquid is avoided, the workload of checking and maintaining a cooling system is reduced, and the working reliability of the diesel engine working in plateau windy and sandy areas is obviously improved.

Drawings

FIG. 1 is a schematic structural diagram of a water filling port cover of a high-power diesel engine cooling system for plateau environment.

Fig. 2 is a schematic structural diagram of the cover according to the present invention.

Fig. 3 is a schematic view of the overall structure of the air valve body according to the present invention.

Fig. 4 is a schematic top view of the air valve body according to the present invention.

FIG. 5 is a schematic side view of the air valve body according to the present invention.

FIG. 6 is a schematic view of an assembly structure of the air valve body and the cover body according to the present invention.

Fig. 7 is a schematic structural view of the steam valve of the present invention.

Fig. 8 is a schematic structural view of the steam valve and the steam valve spring according to the present invention.

FIG. 9 is a schematic sectional view of a water inlet cover of a high-power diesel engine cooling system for plateau environment according to the present invention.

FIG. 10 is a schematic view of an air inlet route of a water inlet cover of a high-power diesel engine cooling system for plateau environment according to the present invention.

FIG. 11 is a schematic view of a steam escape route of a water filling port cover of a high-power diesel engine cooling system for plateau environment according to the present invention.

FIG. 12 is a schematic view of the water inlet cover of the cooling system of the high-power diesel engine for plateau environment for preventing steam leakage according to the present invention.

Detailed Description

The present invention is described in further detail below in order to enable those skilled in the art to practice the invention with reference to the description.

As shown in fig. 1 and 2, the water inlet cover of the cooling system of the high-power diesel engine for the plateau environment provided by the invention comprises: the cover body 110, specifically, the cover body 110 is a hollow structure, one end of the cover body 110 is an open end, the other end is a sealed end, one side of a center line of the sealed end is provided with a plurality of first air holes 112, a center of the sealed end is provided with a first through hole 113, a side surface of the cover body 220 is provided with a second air hole 114, the cover body 110 includes a first inner wall 115 and a second inner wall 116, an inner diameter of the first inner wall 115 is larger than an inner diameter of the second inner wall 116, and a stop step is formed between the first inner wall 115 and the second inner wall 116; a plurality of bump structures 111 are spaced apart on the outside of the hermetic terminal.

In this embodiment, the number of the first air holes 112 is 3, and the number of the bump structures 111 is 4.

The invention also includes: a plurality of air screens are disposed on the plurality of first air holes 112 in a one-to-one correspondence.

As shown in fig. 2, 3 and 4, the present invention further includes: an air valve adjusting base 121 and an air valve body 122, wherein the air valve adjusting base 121 is detachably disposed at the opening end by a screw thread, thereby being fixed on the cover body 110; air valve body 122 includes top surface 201, diaphragm 202, first bottom surface 203, second bottom surface 208, and outer race 204; the outer ring 204 is of an arc-shaped structure, the partition plate 202, the first bottom surface 203 and the outer ring 204 form a semicircular groove, the first bottom surface 203 is provided with a plurality of third air holes 205, and the top surface 201 and the second bottom surface 208 are both of semicircular structures and are arranged at two ends of the partition plate 202 at intervals in parallel; the radius of the second bottom surface 208 is larger than that of the top surface 201, and a second through hole 206 is formed at the center of the partition 202.

In this embodiment, the number of the third air holes 205 is 3, and the 3 third air holes 205 and the plurality of first air holes 112 are vertically arranged.

As shown in fig. 5, at least one fourth air hole 207 is formed in the partition plate 202, at least one air hole valve 209 is correspondingly formed in the at least one fourth air hole 207 through a spring, and when no air enters or exits from the air holes, the air hole valve 209 can close the fourth air hole 207; and the at least one air vent valve 209 is disposed between the top surface 201 and the second bottom surface 208.

In this embodiment, the number of the fourth air holes 207 is 2.

As shown in fig. 6, the air valve body 122 is disposed in the cover body 110, and the radius of the outer ring 204 and the radius of the top surface 201 are both the same as the inner diameter of the second inner wall 116, the radius of the second bottom surface 208 is the same as the radius of the first inner wall 115, the second bottom surface 208 is slidably engaged with the stop step, and the outer ring 204 and the top surface 201 are in contact with the cover body 110 to realize sealing; an air valve spring 123 is disposed between the air valve body 122 and the air valve adjusting base 121.

As shown in fig. 7 and 8, the present invention further includes: the steam valve comprises a central rod 131, a steam valve adjusting nut 133 and a valve 132; as shown in fig. 9, one end of the central rod 131 slidably passes through the second through hole 206 and the first through hole 113, the steam valve adjusting nut 133 is screwed on the other end of the central rod 131, the valve 132 is a semi-circular structure and is vertically arranged with the central rod 131, the valve 132 is arranged in the semi-circular groove, and the radius of the valve 132 is greater than the distance from the third air hole 205 to the center of the air valve body 122; a steam valve spring 134 is disposed between the steam valve nut 133 and the air valve body 122.

The working process of the water filling port cover of the high-power diesel engine cooling system for the plateau environment comprises the following steps:

as shown in fig. 10, when the pressure of the cooling system is lower than the limit pressure, the external air enters the air valve body 122 through the first air hole 112, the air hole valve 209 on the fourth air hole 207 is opened, the external air pressure pushes the second bottom surface 208 to slide downward, so that a gap is formed between the second bottom surface 208 and the cover body 110, the external air enters the cooling system through the second air hole 114, and the air valve spring 123 pushes the second bottom surface 208 to be engaged with the stop step through the restoring force of the spring until the pressure of the cooling system is not lower than the limit pressure.

As shown in fig. 11, when the pressure in the cooling system is higher than the defined pressure, the internal steam enters the cover 110 through the second air hole 114, the steam generates an upward thrust on the valve 132 through the third air hole 205, and the steam enters the external environment from the third air hole 205 and the first air hole 112 until the pressure in the cooling system is not higher than the defined pressure, and the steam valve spring 134 drives the valve 132 to close the third air hole 205 through the restoring force of the spring.

As shown in fig. 12, when sand carried in the air enters the joint surface between the air valve body 122 and the air valve adjusting base 121 to cause the leakage of the cooling liquid, the air hole valve 209 closes the fourth air hole 207, so as to form a closed cavity in the air valve, thereby avoiding the loss of the cooling liquid, reducing the workload of checking and maintaining the cooling system, and obviously improving the working reliability of the diesel engine working in the plateau windy and sandy area.

The water filling port cover of the high-power diesel engine cooling system for the plateau environment provided by the invention can be used in the plateau windy and sandy area, the pressure in the cooling system is kept, the loss of cooling liquid is avoided, the workload of checking and maintaining the cooling system is reduced, and the working reliability of the diesel engine working in the plateau windy and sandy area is obviously improved.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.