CN210858924U - Expansion tank cover and expansion tank - Google Patents

Abstract

The utility model relates to the technical field of automobiles, in particular to an expansion tank cover and an expansion tank, wherein the expansion tank cover comprises a shell, a pressure valve and a pressure regulating valve, a containing cavity is arranged in the shell, and a first opening and a second opening are arranged on the cavity wall of the containing cavity; the pressure valve is including being used for sealing first opening or the first valve block of opening, and be used for driving first valve block and compress tightly the first spring at first open-ended border, thereby can guarantee to keep certain pressure in the expansion tank through first spring, first valve block and first spring all set up in holding the chamber, the air-vent valve sets up in holding the chamber, the air-vent valve is used for applying the pretightning force for first valve block, so that first valve block supports tightly in first open-ended border, the size of pretightning force can be adjusted, thereby first valve block is opened first open-ended pressure and is adjustable, and then effectively adjust the inside and outside atmospheric pressure difference of expansion tank, make whole car can adapt to the height above sea level and change. The expansion tank comprises the expansion tank cover.

Description

Expansion tank cover and expansion tank

Technical Field

The utility model relates to the technical field of automobiles, especially, relate to an inflation tank lid and expansion tank.

Background

The pressure cover of the expansion tank is a key part for the operation of the cooling system of the automobile. The cooling system can be kept at a high pressure during the driving of the vehicle.

The expansion tank in the prior art, as disclosed in the earlier patent with application number CN201220450417.4, is a pressure cover of an automobile expansion tank, and the pressure cover of the expansion tank is composed of a shell, a gland, a large spring, a valve plate, a rubber gasket, a valve core, a small spring, a valve body, a sealing ring and the like. The valve integrates the functions of a pressure reducing valve and a vacuum valve, adopts a coaxial design, fully utilizes the sectional area of a cooling liquid filling port of the expansion tank, realizes the flow area of the pressure reducing valve and the vacuum valve to the maximum, enables gas to be discharged from the expansion tank or flow into the expansion tank in a short time, and improves the pressure relief or pressure compensation speed. However, in the expansion tank pressure cover, a main component for adjusting the air pressure in the expansion tank is a large spring, and the expansion tank pressure cover provides sealing pressure by means of deformation of the large spring, however, the sealing pressure provided by the large spring is unique, so that the whole vehicle cannot completely adapt to altitude change in the running process.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides an inflation tank lid, the atmospheric pressure in can effectively adjusting the expansion tank.

In one aspect, the utility model provides an expansion tank cover, this expansion tank cover includes:

the device comprises a shell, a first sealing ring, a second sealing ring and a sealing ring, wherein a containing cavity is arranged in the shell, and a first opening and a second opening are arranged on the wall of the containing cavity;

the pressure valve comprises a first valve plate and a first spring, the first valve plate is used for sealing or opening the first opening, the first spring is used for driving the first valve plate to press the edge of the first opening, and the first valve plate and the first spring are both arranged in the accommodating cavity;

the pressure regulating valve is arranged in the accommodating cavity and used for applying pretightening force to the first valve plate so that the first valve plate abuts against the edge of the first opening, and the pretightening force can be adjusted.

As an optimal technical scheme of the expansion water tank cover, the expansion water tank further comprises a vacuum valve, a first through hole is formed in the first valve plate, the accommodating cavity is communicated with the first opening through the first through hole, the vacuum valve comprises a valve core capable of being slidably arranged through the first through hole, a second spring of the valve core is sleeved with the vacuum valve, and a second valve plate arranged on the valve core, the second valve plate and the second spring are respectively located on two sides of the first valve plate, the second spring is located in the accommodating cavity, and the second spring is used for enabling the second valve plate to seal the first through hole.

As a preferred technical scheme of the expansion water tank cover, the pressure valve further comprises a valve seat, the valve seat is abutted to the first valve plate, the valve core can be slidably arranged in the valve seat in a penetrating mode, the valve core is sleeved with the first spring, and two ends of the first spring are respectively abutted to the valve seat and the inner wall of the accommodating cavity.

As a preferable mode of the expansion tank cover, the pressure regulating valve includes:

the valve body is fixedly connected with the cavity wall of the accommodating cavity and is positioned in the accommodating cavity, a valve cavity is arranged in the valve body, and a second through hole communicated with the valve cavity is formed in the shell;

the pressure regulating handle can be slidably arranged in the second through hole in a penetrating way;

one end of the pressure regulating seat is positioned in the valve cavity, and the other end of the pressure regulating seat is abutted against the first valve plate;

and the third spring is connected with the pressure regulating handle and the pressure regulating seat, the deformation direction of the third spring is followed, and the pressure regulating handle is positioned in the valve cavity and can be adjusted.

As the preferred technical scheme of the expansion water tank cover, the pressure regulating handle is in threaded connection with the inner wall of the valve cavity.

As the preferred technical scheme of inflation tank lid, follow the deformation direction of third spring, the interval is equipped with a plurality of first connection structure on the inner wall of valve pocket, be equipped with second connection structure on the pressure regulating handle, first connection structure is one in protruding and the draw-in groove of card, second connection structure is another in protruding and the draw-in groove of card, the card protruding with the draw-in groove joint.

As an optimal technical scheme of the expansion water tank cover, along the deformation direction of the third spring, a plurality of scale marks are arranged on the pressure regulating handle at intervals and are in one-to-one correspondence with the first connecting structures.

As an optimal technical scheme of the expansion water tank cover, the first connecting structure is a clamping groove, the second connecting structure is a clamping protrusion, the pressure regulating handle comprises a shell which can be slidably arranged in the second through hole in a penetrating mode, and a pressing mechanism arranged on the shell, the clamping protrusion can be slidably inserted into the shell, and the pressing mechanism is used for driving the clamping protrusion to retract into the shell.

As a preferable technical solution of the expansion tank cover, the first opening is circular, the number of the pressure regulating valves is plural, and the plural pressure regulating valves are uniformly distributed along a circumferential direction of the first opening.

On the other hand, the utility model provides an expansion tank, including the expansion tank lid in the above-mentioned arbitrary scheme.

The utility model has the advantages that:

the utility model provides an expansion tank cover and an expansion tank, wherein the expansion tank cover comprises a shell, a pressure valve and a pressure regulating valve, a containing cavity is arranged in the shell, and a first opening and a second opening are arranged on the cavity wall of the containing cavity; the pressure valve comprises a first valve plate used for sealing or opening the first opening and a first spring used for driving the first valve plate to compress the edge of the first opening, and the first valve plate and the first spring are both arranged in the accommodating cavity. The pressure regulating valve is arranged in the accommodating cavity and used for applying pretightening force to the first valve plate so that the valve plate abuts against the edge of the first opening, and the pretightening force can be adjusted. Compress tightly first valve block in first open-ended border through first spring and can guarantee to keep certain pressure in expansion tank, through setting up the air-vent valve, adjustable pretightning force is applyed in first valve block to the air-vent valve to be used for driving first valve block and open that first open-ended atmospheric pressure difference is adjustable, and then make whole car at the height above sea level change of the adaptable operation in-process of driving.

Drawings

FIG. 1 is a schematic structural view of an expansion tank cover in an embodiment of the present invention;

FIG. 2 is a schematic view of a part of the structure of an expansion tank cover in the embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a pressure regulating valve in an expansion tank cover according to an embodiment of the present invention;

fig. 4 is a schematic structural view of the pressure regulating handle in the embodiment of the present invention.

In the figure:

1. a housing; 11. an accommodating chamber; 12. a first opening; 13. a second opening;

2. a pressure valve; 21. a first valve plate; 211. a first through hole; 22. a first spring; 23. a valve seat;

3. a pressure regulating valve; 31. a valve body; 311. a valve cavity; 312. a card slot; 32. a pressure regulating handle; 321. a housing; 3211. a cavity; 322. a button; 323. a return spring; 324. a connecting rod; 325. a drive spring; 326. a bolt; 33. a pressure regulating seat; 34. a third spring; 35. clamping convex; 351. a guide groove; 36. scale lines;

4. a vacuum valve; 41. a valve core; 411. a boss; 42. a second spring; 43. a second valve plate;

5. a first gasket;

6. a second gasket.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1 to 4, the present embodiment provides an expansion tank cover, which is installed on an expansion tank and can adjust the air pressure in the expansion tank. The expansion water tank cover comprises a shell 1, a pressure valve 2 and a pressure regulating valve 3, wherein an accommodating cavity 11 is arranged in the shell 1, and a first opening 12 and a second opening 13 are arranged on the wall of the accommodating cavity 11; the pressure valve 2 includes a first valve plate 21 for sealing or opening the first opening 12, and a first spring 22 for driving the first valve plate 21 to press the edge of the first opening 12, and both the first valve plate 21 and the first spring 22 are disposed in the accommodating chamber 11. The pressure regulating valve 3 is arranged in the accommodating cavity 11, the pressure regulating valve 3 is used for applying pretightening force to the first valve plate 21, so that the first valve plate 21 abuts against the edge of the first opening 12, and the pretightening force can be adjusted. In this embodiment, the first valve plate 21 is pressed against the edge of the first opening 12 by the first spring 22, so that a certain pressure can be kept in the expansion water tank, and by arranging the pressure regulating valve 3, the pressure regulating valve 3 applies an adjustable pretightening force to the first valve plate 21, so that the air pressure difference for driving the first valve plate 21 to open the first opening 12 can be adjusted, and the whole vehicle can adapt to the altitude change in the running process.

Specifically, the first spring 22 and the pressure regulating valve 3 both apply pressure to the first valve plate 21, so that the first valve plate 21 abuts against the edge of the first opening 12 from outside to inside, the pressure applied to the first valve plate 21 by the first spring 22 and the pressure regulating valve 3 is F1, the resultant force of the difference between the internal air pressure and the external air pressure of the expansion tank acting on the first valve plate 21 is F2, when F2 is greater than F1, the first valve plate 21 is opened, and at this time, the gas inside the expansion tank enters the accommodating cavity 11 through the first opening 12 and is discharged from the second opening 13. When F2 is smaller than F1, the first valve plate 21 closes the first opening 12, so that the pretightening force provided by the pressure regulating valve 3 to the first valve plate 21 can be adjusted, the size of F1 can be adjusted, and finally the air pressure difference for opening the first opening 12 can be adjusted. The direction of the pressure of the gas inside the expansion tank acting on the first valve plate 21 is shown as the direction OA in fig. 1, and the direction of the pressure of the gas outside the expansion tank acting on the first valve plate 21 is shown as the direction OB in fig. 1.

Optionally, the expansion tank further includes a vacuum valve 4, the first valve plate 21 is provided with a first through hole 211, the accommodating cavity 11 is communicated with the first opening 12 through the first through hole 211, the vacuum valve 4 includes a valve core 41 capable of slidably penetrating through the first through hole 211, a second spring 42 sleeved on the valve core 41, and a second valve plate 43 disposed on the valve core 41, the second valve plate 43 and the second spring 42 are respectively located on two sides of the first valve plate 21, the second spring 42 is located in the accommodating cavity 11, and the second spring 42 is used for sealing the first through hole 211 with the second valve plate 43. By providing the vacuum valve 4, when the air pressure inside the expansion tank is low, the pressure inside the expansion tank can be supplemented by opening the first through hole 211. Specifically, in this embodiment, the valve core 41 is provided with a boss 411, the boss 411 is located in the accommodating cavity 11, two ends of the second spring 42 respectively abut against the first valve plate 21 and the boss 411, and under the action of the second spring 42, the valve core 41 drives the second valve plate 43 to seal the first through hole 211 from inside to outside. The acting force of the second spring 42 on the second valve plate 43 through the valve core 41 is F3, the resultant force of the pressure difference between the inside and the outside of the expansion water tank acting on the second valve plate 43 is F4, when F4 is greater than F3, the second valve plate 43 opens the first through hole 211, and at the moment, the outside air enters the expansion water tank from the first through hole 211 through the second opening 13 and the accommodating cavity 11, so that pressure can be supplemented in the expansion water tank.

Optionally, a mounting hole is formed in an edge of the accommodating cavity 11 opposite to the first opening 12, and the valve element 41 is slidably disposed through the mounting hole at the same time, so that the direction stability of the valve element 41 during the sliding process can be ensured.

Optionally, be equipped with first sealed pad 5 between the border of first valve block 21 and first opening 12, first valve block 21 supports tightly in the border of first opening 12 through first sealed pad 5, can guarantee sealed effect. Be equipped with second sealed pad 6 between the border of second valve block 43 and first through-hole 211, second valve block 43 supports tightly in the border of first through-hole 211 through second sealed pad 6 to guarantee sealed effect.

Optionally, the pressure valve 2 further includes a valve seat 23, the valve seat 23 abuts against the first valve plate 21, the valve core 41 is slidably disposed through the valve seat 23, the first spring 22 is sleeved on the valve core 41, and two ends of the first spring 22 abut against the valve seat 23 and an inner wall of the accommodating cavity 11 respectively. In this embodiment, the valve seat 23 is boss-shaped, including the less first section of external diameter and the great second section of external diameter, first spring 22 cover is located first section and butt in the step department between first section and second section, and case 41 wears to locate on the first section, so set up and integrate pressure valve 2 and vacuum valve 4 effectively, can simplify the structure and guarantee stability between them.

Alternatively, the pressure regulating valve 3 includes a valve body 31, a pressure regulating handle 32, a pressure regulating seat 33, and a third spring 34. The valve body 31 is fixedly connected with the cavity wall of the accommodating cavity 11 and is positioned in the accommodating cavity 11, a valve cavity 311 is arranged in the valve body 31, and a second through hole communicated with the valve cavity 311 is arranged on the shell 1; the pressure regulating handle 32 can be slidably arranged through the second through hole; one end of the pressure regulating seat 33 is positioned in the valve cavity 311, and the other end of the pressure regulating seat 33 is abutted against the first valve plate 21; the third spring 34 is connected with the pressure regulating handle 32 and the pressure regulating seat 33, and along the deformation direction of the third spring 34, the position of the pressure regulating handle 32 in the valve cavity 311 can be regulated, and when the pressure regulating handle 32 moves, the amount of the pressure regulating handle 32 compressing the third spring 34 changes, so that the acting force applied to the first valve plate 21 by the pressure regulating seat 33 can be regulated. In this embodiment, the deformation direction of the third spring 34 is along the direction AB, and the deformation direction of the third spring 34 and the direction of the force exerted by the pressure regulating seat 33 on the first valve plate 21 are both perpendicular to the surface of the first valve plate 21. The downward and upward strokes of the pressure regulating handle 32 are different, and the additional increased pretightening force on the first valve plate 21 is different, so that the sealing cover of the single expansion water tank has different sealing pressures.

Optionally, along the deformation direction of the third spring 34, a plurality of first connection structures are arranged on the inner wall of the valve cavity 311 at intervals, a second connection structure is arranged on the pressure regulating handle 32, the first connection structure is one of the clamping protrusion 35 and the clamping groove 312, the second connection structure is the other of the clamping protrusion 35 and the clamping groove 312, and the clamping protrusion 35 is clamped with the clamping groove 312. In this embodiment, the pressure regulating handle 32 is provided with the convex clamping portion 35, and the inner wall of the valve cavity 311 is provided with the clamping groove 312, so that the pressure regulating handle 32 can adjust the compression amount of the third spring 34 by clamping the convex clamping portion 35 and the different clamping grooves 312. Of course, the locking protrusion 35 may be disposed on the inner wall of the valve cavity 311, and the locking groove 312 may be disposed on the pressure regulating handle 32. In other embodiments, the pressure adjustment handle 32 may be threaded to the inner wall of the valve cavity 311.

Preferably, along the deformation direction of the third spring 34, a plurality of scale marks 36 are arranged on the pressure regulating handle 32 at intervals, such as 0.9bar, 1.0bar, and the like, and the plurality of scale marks 36 are arranged in one-to-one correspondence with the plurality of first connecting structures. So as to be located in different altitudes, and when the position of the pressure-adjusting handle 32 is adjusted, it can be adjusted with reference to the scale marks 36 so that the compression amount of the third spring 34 corresponds to the pressure required at different altitudes.

In this embodiment, the pressure-regulating handle 32 includes a housing 321 slidably disposed through the second through hole, and a pressing mechanism disposed on the housing 321, the locking protrusion 35 is slidably inserted into the housing 321, and the pressing mechanism is used for driving the locking protrusion 35 to retract into the housing 321. In other embodiments, the locking protrusion 35 may be made of rubber, and when the position of the pressure adjusting handle 32 is adjusted, the locking protrusion 35 can enter one locking groove 312 into another locking groove 312 by forced pressing.

Specifically, the pressing mechanism includes a button 322, a return spring 323, a connecting rod 324, and a drive spring 325. The shell 321 is provided with a cavity 3211, the button 322 is movably embedded in the shell 321, the return spring 323 connects the button 322 and the inner wall of the shell 321, so that the button 322 partially protrudes out of the shell 321 in an unpressed state, the button 322 is fixedly connected with the connecting rod 324, the connecting rod 324 is located in the cavity 3211, the bottom of the connecting rod 324 is in a fork-shaped structure, two free ends of the fork-shaped structure are respectively provided with a bolt 326, the two bulges 35 slidably penetrate through the shell 321, the driving spring 325 is connected with the two bulges 35, and provides acting force for the two bulges 35 to be away from each other. All be equipped with the guide way 351 of slope on two calorie of protruding 35, peg graft in guide way 351 two bolt 326 one-to-one, when button 322 was pressed, button 322 will compress drive spring 325, connecting rod 324 is close to each other through two protruding 35 of two bolt 326 drives simultaneously, so that the shrink of calorie of protruding 35 to cavity 3211 in, thereby, can freely adjust the position of pressure regulating handle 32 this moment, when unclamping button 322 the back, two calorie of protruding 35 will stretch out cavity 3211 under drive spring 325's effect, and can with draw-in groove 312 joint, with the position of fixed pressure regulating handle 32.

Alternatively, the first opening 12 is circular, the number of the pressure regulating valves 3 is plural, and the plural pressure regulating valves 3 are uniformly distributed along the circumferential direction of the first opening 12.

The embodiment also provides an expansion water tank, which comprises the expansion water tank cover in the scheme.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. An expansion tank cover, comprising:

the device comprises a shell (1), wherein a containing cavity (11) is arranged in the shell (1), and a first opening (12) and a second opening (13) are arranged on the wall of the containing cavity (11);

the pressure valve (2) comprises a first valve plate (21) used for sealing or opening the first opening (12) and a first spring (22) used for driving the first valve plate (21) to press the edge of the first opening (12), and the first valve plate (21) and the first spring (22) are both arranged in the accommodating cavity (11);

the pressure regulating valve (3) is arranged in the accommodating cavity (11), and the pressure regulating valve (3) is used for applying pretightening force to the first valve plate (21) so that the first valve plate (21) abuts against the edge of the first opening (12), and the pretightening force can be adjusted.

2. The expansion tank cover according to claim 1, characterized in that it further comprises a vacuum valve (4), the first valve plate (21) is provided with a first through hole (211), the accommodating cavity (11) is communicated with the first opening (12) through the first through hole (211), the vacuum valve (4) comprises a valve core (41) which can be slidably arranged in the first through hole (211) in a penetrating way, and a second spring (42) which is sleeved on the valve core (41), and a second valve plate (43) arranged on the valve core (41), wherein the second valve plate (43) and the second spring (42) are respectively positioned at two sides of the first valve plate (21), and the second spring (42) is positioned in the accommodating cavity (11), and the second spring (42) is used for sealing the first through hole (211) by the second valve plate (43).

3. The cover of the expansion tank as claimed in claim 2, wherein the pressure valve (2) further comprises a valve seat (23), the valve seat (23) abuts against the first valve plate (21), the valve core (41) is slidably disposed through the valve seat (23), the first spring (22) is sleeved on the valve core (41), and two ends of the first spring (22) abut against the valve seat (23) and the inner wall of the accommodating cavity (11) respectively.

4. The expansion tank cover according to claim 1, characterized in that the pressure regulating valve (3) comprises:

the valve body (31) is fixedly connected with the wall of the accommodating cavity (11) and is positioned in the accommodating cavity (11), a valve cavity (311) is arranged in the valve body (31), and a second through hole communicated with the valve cavity (311) is formed in the shell (1);

the pressure regulating handle (32), the said pressure regulating handle (32) can wear and locate in the said second through hole slidably;

one end of the pressure regulating seat (33) is positioned in the valve cavity (311), and the other end of the pressure regulating seat (33) is abutted against the first valve plate (21);

third spring (34), third spring (34) are connected pressure regulating handle (32) with pressure regulating seat (33), follow the deformation direction of third spring (34), pressure regulating handle (32) are located position in valve chamber (311) can be adjusted.

5. The expansion tank cover according to claim 4, characterized in that the pressure regulating handle (32) is in threaded connection with the inner wall of the valve cavity (311).

6. The expansion tank cover according to claim 4, characterized in that along the deformation direction of the third spring (34), a plurality of first connecting structures are arranged on the inner wall of the valve cavity (311) at intervals, a second connecting structure is arranged on the pressure regulating handle (32), the first connecting structure is one of a clamping protrusion (35) and a clamping groove (312), the second connecting structure is the other one of the clamping protrusion (35) and the clamping groove (312), and the clamping protrusion (35) and the clamping groove (312) are clamped.

7. The expansion tank cover according to claim 6, characterized in that along the deformation direction of the third spring (34), a plurality of scale marks (36) are arranged on the pressure regulating handle (32) at intervals, and the scale marks (36) and the first connecting structures are arranged in a one-to-one correspondence.

8. The cover of the expansion tank as claimed in claim 6, wherein the first connecting structure is a locking groove (312), the second connecting structure is a locking protrusion (35), the pressure-regulating handle (32) comprises a housing (321) slidably disposed through the second through hole, and a pressing mechanism disposed on the housing (321), the locking protrusion (35) is slidably inserted into the housing (321), and the pressing mechanism is used for driving the locking protrusion (35) to retract into the housing (321).

9. The expansion tank cover according to claim 1, characterized in that the first opening (12) is circular, the number of the pressure regulating valves (3) is plural, and the plural pressure regulating valves (3) are uniformly distributed along the circumferential direction of the first opening (12).

10. An expansion tank characterized by comprising an expansion tank cover according to any one of claims 1 to 9.

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