CN215059931U

CN215059931U - GVV safety valve for oil tank

Info

Publication number: CN215059931U
Application number: CN202121654820.4U
Authority: CN
Inventors: 刘艳艳; 刘康福; 张勇
Original assignee: Chongqing Tongle Machinery Co ltd
Current assignee: Chongqing Tongle Machinery Co ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2021-12-07
Anticipated expiration: 2031-07-16

Abstract

The utility model belongs to the field of automobiles, in particular to an GVV safety valve for an oil tank, which comprises a valve body and a floating structure; a floating structure is arranged in the valve body in a sliding manner; the floating structure comprises a core sleeve, a floater and a sealing gasket; the two sides of the valve body are fixedly connected with clamping plates, the two sides of the core sleeve are fixedly connected with convex buckles, the core sleeve is arranged inside the valve body, the convex buckles are buckled with the clamping plates, a floater is slidably arranged inside the core sleeve, a sealing gasket is arranged at the top of the floater, an air hole is formed in the top end of the core sleeve, an air exchange pipe is arranged on the side surface of the top of the valve body, and the air exchange pipe is communicated with the air hole; the disc shape of the sealing gasket avoids the problem of poor sealing caused by bending of the sealing gasket; when fuel is added, the liquid level of fuel in the fuel tank rises, the floater is pushed to rise, the sealing gasket is driven to seal and block the air hole, and the fuel is prevented from flowing out of the air hole; after the liquid level is lowered, the floater descends to drive the sealing gasket to be separated from the air hole to finish ventilation, so that the air pressure inside and outside the oil tank is balanced.

Description

GVV safety valve for oil tank

Technical Field

The utility model relates to the field of automobiles, specifically a GVV relief valve for oil tank.

Background

GVV A relief valve is mounted on the top of the tank assembly for controlling the pressure of the gas in the tank.

GVV the safety valve has a floating structure in the valve body, the top of the valve body is equipped with a vent hole, the top of the floating structure is equipped with a sealing pad matching with the vent hole, the floating structure rises with the liquid level under the buoyancy of the fuel oil, so that the sealing pad seals the vent hole, when the liquid level of the fuel oil falls, the floating structure falls under the gravity, so that the sealing pad and the vent hole are separated to complete ventilation; most of sealing gaskets of the conventional GVV valve are strip-shaped sealing gaskets, and the strip-shaped sealing gaskets are easily turned over in the long-term floating process of the floater, so that the fuel in the fuel tank is leaked due to poor sealing; therefore, an GVV safety valve for a fuel tank is proposed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to remedy prior art's not enough, solve the sealed pad of current GVV valve and mostly be banding sealed pad, cause banding sealed pad to take place to turn over easily at the long-term in-process that floats of float, cause sealed not tight fuel that makes in the oil tank to take place the problem of leaking, the utility model provides a GVV relief valve for oil tank.

The utility model provides a technical scheme that its technical problem adopted is: the utility model relates to an GVV safety valve for an oil tank, which comprises a valve body and a floating structure; a floating structure is arranged in the valve body in a sliding manner;

the floating structure comprises a core sleeve, a floater and a sealing gasket; the two sides of the valve body are fixedly connected with clamping plates, the two sides of the core sleeve are fixedly connected with convex buckles, the core sleeve is arranged inside the valve body, the convex buckles are buckled with the clamping plates, a floater is slidably arranged inside the core sleeve, a sealing gasket is arranged at the top of the floater, an air hole is formed in the top end of the core sleeve, an air exchange pipe is arranged on the side surface of the top of the valve body, and the air exchange pipe is communicated with the air hole; the disc shape of the sealing gasket avoids the problem of poor sealing caused by bending of the sealing gasket; when the oil filling valve is used, the valve body is arranged at the top of the oil tank assembly, when oil is filled, the liquid level of fuel oil in the oil tank rises, the floater is pushed to rise, the sealing gasket is driven to seal and block the air hole, and the fuel oil is prevented from flowing out of the air hole; when the liquid level of the fuel is lowered, the floater descends to drive the sealing gasket to be separated from the air hole to complete ventilation, so that the air pressure inside and outside the oil tank is balanced.

Preferably, a conical seat is fixedly connected to the middle of the top surface of the floater, a U-shaped buckle is fixedly connected to one side of the top surface of the floater, a pair of limit buckles is fixedly connected to the other side of the top surface of the floater, a movable seat is movably mounted between the U-shaped buckle and the limit buckles, a conical groove is formed in the bottom surface of the movable seat, the inner wall of the conical groove is in sliding fit with the top wall of the conical seat, and a sealing gasket is sleeved on the top surface of the conical seat; the joint between the sealing gasket and the air hole is more compact, and the sealing effect of the sealing gasket is further improved.

Preferably, the bottom surface of the core sleeve is provided with an annular baffle plate, the annular baffle plate is sleeved on the outer ring of the air hole, and the bottom surface of the annular baffle plate is contacted with the top surface of the sealing gasket; further improving the sealing effect of the sealing gasket on the air hole.

Preferably, the inner ring at the top of the core sleeve is fixedly connected with a positioning sleeve, the inner ring of the positioning sleeve is provided with a baffle ring, the inner ring of the baffle ring is sleeved on the outer ring of the air hole, both sides of the positioning sleeve and both sides of the baffle ring are provided with air grooves, the inner ring of the positioning sleeve is slidably provided with a pressing seat, the top of the pressing seat is provided with a first spring, the outer ring at the top of the core sleeve is buckled with a pressing plate, the bottom surface of the pressing plate extrudes the first spring, and the outer ring at the top of the core sleeve is provided with a first sealing ring; the air flow rate during ventilation is reduced, and the internal air flow disorder of the oil tank caused by high-speed passing of external air flow is avoided.

Preferably, the bottom surface of the core sleeve is clamped with the base, a round hole is formed in the middle of the base, a plurality of barrier strips are fixedly connected to the inner ring of the round hole, the inner rings of the barrier strips are in sliding fit with the bottom end of the floater, a plurality of through holes are formed in the outer ring of the base, a second spring is arranged on the outer ring of the bottom of the floater, and the top surface of the base is in contact with the bottom end of the second spring; a gap is formed between the floating structure and the base, adhesion between the floating structure and the base is avoided, and pushing of fuel to the floating structure is facilitated.

Preferably, the outer ring of the float is provided with a plurality of raised lines, the outer rings of the raised lines are in sliding fit with the inner ring of the core sleeve, a plurality of oil return holes are formed in two sides of the core sleeve, sliding grooves are formed in two sides of the outer ring of the float, sliding rails are formed in two sides of the inner ring of the core sleeve, and the side walls of the sliding rails are in sliding fit with the side walls of the sliding grooves; after the fuel rises, the fuel returns to the inside of the fuel tank through the gap between the floater and the core sleeve and the oil return hole; the sliding fit between the sliding rail and the sliding groove prevents the float from rotating in the sliding process.

The utility model discloses an useful part lies in:

1. when fuel is added, the liquid level of fuel in the fuel tank rises, the floater is pushed to rise, the movable seat is driven to float between the limiting buckle and the U-shaped buckle, and the conical seat is in sliding fit with the conical groove, so that the sealing gasket is attached to the air hole more tightly, the sealing gasket is driven to seal and block the air hole, and the fuel is prevented from flowing out of the air hole; when the liquid level of the fuel is lowered, the floater descends to drive the sealing gasket to be separated from the air hole to finish ventilation, so that the air pressure inside and outside the oil tank is balanced;

2. through the first spring of clamp plate extrusion, promote the pressure seat and compress tightly in the inside of position sleeve, air flow rate when having reduced to ventilate has avoided external air current to pass through at a high speed and has caused the inside air current disorder of oil tank.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic overall structure diagram of the first embodiment;

FIG. 2 is an exploded view of the first embodiment;

FIG. 3 is an overall sectional view of the first embodiment;

fig. 4 is a schematic overall structure diagram of the second embodiment.

In the figure: 1. a valve body; 2. a core sleeve; 3. a float; 4. a gasket; 5. clamping a plate; 6. a convex buckle; 7. air holes; 8. a ventilation tube; 9. a conical seat; 10. a U-shaped buckle; 11. a limit buckle; 12. a movable seat; 13. an annular baffle; 14. a positioning sleeve; 15. a baffle ring; 16. pressing a base; 17. a first spring; 18. pressing a plate; 19. a first seal ring; 20. a base; 21. a circular hole; 22. blocking strips; 23. a through hole; 24. a second spring; 25. a convex strip; 26. an oil return hole; 27. a chute; 28. a slide rail; 29. and a second seal ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example one

Referring to fig. 1-3, a GVV safety valve for a fuel tank comprises a valve body 1 and a floating structure; a floating structure is arranged in the valve body 1 in a sliding manner;

the floating structure comprises a core sleeve 2, a floater 3 and a sealing gasket 4; the two sides of the valve body 1 are fixedly connected with clamping plates 5, the two sides of the core sleeve 2 are fixedly connected with convex buckles 6, the core sleeve 2 is installed inside the valve body 1, the convex buckles 6 are buckled with the clamping plates 5, a floater 3 is installed inside the core sleeve 2 in a sliding mode, a sealing gasket 4 is arranged at the top of the floater 3, an air hole 7 is formed in the top end of the core sleeve 2, an air exchange pipe 8 is arranged on the side face of the top of the valve body 1, and the air exchange pipe 8 is communicated with the air hole 7; the problem of poor sealing caused by bending of the sealing gasket 4 is solved through the disc shape of the sealing gasket 4; when the oil filling valve is used, the valve body 1 is arranged at the top of the oil tank assembly, when oil is filled, the liquid level of fuel oil in the oil tank rises, the floater 3 is pushed to rise, the sealing gasket 4 is driven to seal and block the air hole 7, and the fuel oil is prevented from flowing out of the air hole 7; when the liquid level of the fuel is lowered, the floater 3 descends to drive the sealing gasket 4 to be separated from the air hole 7 to finish ventilation, so that the air pressure inside and outside the oil tank is balanced.

A conical seat 9 is fixedly connected to the middle of the top surface of the floater 3, a U-shaped buckle 10 is fixedly connected to one side of the top surface of the floater 3, a pair of limit buckles 11 is fixedly connected to the other side of the top surface of the floater 3, a movable seat 12 is movably mounted between the U-shaped buckle 10 and the limit buckles 11, a conical groove is formed in the bottom surface of the movable seat 12, the inner wall of the conical groove is in sliding fit with the top wall of the conical seat 9, and a sealing gasket 4 is sleeved on the top surface of the conical seat 9; through the sliding fit of conical seat 9 and tapered groove for movable seat 12 floats between spacing knot 11 and U-shaped knot 10, thereby makes the laminating between sealed pad 4 and the gas pocket 7 inseparabler, has further improved sealed the sealed effect of filling up 4 then.

An annular baffle 13 is arranged on the bottom surface of the bottom of the core sleeve 2, the annular baffle 13 is sleeved on the outer ring of the air hole 7, and the bottom surface of the annular baffle 13 is in contact with the top surface of the sealing gasket 4; the sealing effect of the sealing gasket 4 on the air hole 7 is further improved through the matching of the annular baffle 13 and the sealing gasket 4.

The inner ring at the top of the core sleeve 2 is fixedly connected with a positioning sleeve 14, the inner ring of the positioning sleeve 14 is provided with a baffle ring 15, the inner ring of the baffle ring 15 is sleeved on the outer ring of the air hole 7, two sides of the positioning sleeve 14 and two sides of the baffle ring 15 are both provided with air grooves, the inner ring of the positioning sleeve 14 is slidably provided with a pressing seat 16, the top of the pressing seat 16 is provided with a first spring 17, the outer ring at the top of the core sleeve 2 is buckled with a pressing plate 18, the bottom surface of the pressing plate 18 extrudes the first spring 17, and the outer ring at the top of the core sleeve 2 is provided with a first sealing ring 19; the first spring 17 is extruded through the pressing plate 18, the pressing seat 16 is pushed to be tightly pressed inside the positioning sleeve 14, the air flow rate during ventilation is reduced, and the problem that the internal air flow of the oil tank is disordered due to the fact that external air flow passes through at a high speed is avoided.

The bottom surface of the core sleeve 2 is clamped with a base 20, a round hole 21 is formed in the middle of the base 20, the inner ring of the round hole 21 is fixedly connected with a plurality of barrier strips 22, the inner rings of the barrier strips 22 are in sliding fit with the bottom end of the floater 3, the outer ring of the base 20 is provided with a plurality of through holes 23, a second spring 24 is arranged on the outer ring of the bottom of the floater 3, and the top surface of the base 20 is in contact with the bottom end of the second spring 24; by the rise of the liquid level of the fuel, the fuel enters the valve body 1 through the round hole 21 and the through hole 23 to push the floating structure to rise; through the second spring 24 that sets up for produce the space between floating structure and the base 20, avoided the adhesion between floating structure and the base 20, be favorable to the promotion of fuel to floating structure.

The outer ring of the floater 3 is provided with a plurality of convex strips 25, the outer rings of the convex strips 25 are in sliding fit with the inner ring of the core sleeve 2, two sides of the core sleeve 2 are provided with a plurality of oil return holes 26, two sides of the outer ring of the floater 3 are provided with sliding chutes 27, two sides of the inner ring of the core sleeve 2 are provided with sliding rails 28, and the side walls of the sliding rails 28 are in sliding fit with the side walls of the sliding chutes 27; a gap is generated between the floater 3 and the core sleeve 2 through the arranged convex strip 25, and after the fuel oil rises, the fuel oil passes through the gap between the floater 3 and the core sleeve 2 and returns to the inside of the fuel tank through the oil return hole 26; by the sliding fit between the slide rail 28 and the slide groove 27, the float 3 is prevented from rotating during sliding.

Example two

Referring to fig. 4, in a first comparative example, as another embodiment of the present invention, a second sealing ring 29 is disposed on an outer ring of the ventilation pipe 8, and the outer ring of the ventilation pipe 8 is threaded; the firm connection degree of the ventilation pipe 8 and an external device is improved through the arranged threads, and the sealing effect of the ventilation pipe 8 is improved through the arranged second sealing ring 29.

The working principle is as follows: firstly, mounting a valve body 1 on the top of a fuel tank assembly; when oil is added, the liquid level of fuel oil in the oil tank rises, the fuel oil enters the core sleeve 2 from the round hole 21 and the through hole 23 of the base 20, the fuel oil pushes the floater 3 to slide upwards along the slide rail 28, the movable seat 12 is pushed to drive the sealing gasket 4 to extrude the annular baffle 13, the air hole 7 is blocked and sealed, and the fuel oil returns to the inside of the oil tank from the oil return hole 26 after passing through a gap between the convex strips 25;

after the liquid level of the fuel drops, the floater 3 slides downwards along the slide rail 28 under the action of gravity to drive the movable seat 12 to move downwards, so that the sealing gasket 4 is separated from the air hole 7, the air exchange pipe 8 is communicated with the fuel tank through the air hole 7, the air exchange action inside and outside the fuel tank is realized, and the air pressure inside and outside the fuel tank is balanced.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims

1. An GVV safety valve for fuel tank, characterized by: comprises a valve body (1) and a floating structure; a floating structure is arranged in the valve body (1) in a sliding manner;

the floating structure comprises a core sleeve (2), a floater (3) and a sealing gasket (4); the improved air breather is characterized in that clamping plates (5) are fixedly connected to two sides of the valve body (1), convex buckles (6) are fixedly connected to two sides of the core sleeve (2), the core sleeve (2) is installed inside the valve body (1), the convex buckles (6) are buckled with the clamping plates (5), a floater (3) is slidably installed inside the core sleeve (2), a sealing gasket (4) is arranged at the top of the floater (3), an air hole (7) is formed in the top end of the core sleeve (2), an air scavenging pipe (8) is arranged on the side face of the top of the valve body (1), and the air scavenging pipe (8) is communicated with the air hole (7).

2. An GVV safety valve for a fuel tank as claimed in claim 1, wherein: top surface middle part rigid coupling toper seat (9) of float (3), top surface one side rigid coupling U-shaped of float (3) is detained (10), a pair of spacing knot (11) of top surface opposite side rigid coupling of float (3), it moves installation sliding seat (12) to take the palm between U-shaped knot (10) and spacing knot (11), the bell jar is seted up to the bottom surface of sliding seat (12), the inner wall of bell jar and the roof sliding fit of toper seat (9), sealed pad (4) are established to the top surface cover of toper seat (9).

3. An GVV safety valve for a fuel tank as claimed in claim 2, wherein: the bottom surface of the core sleeve (2) is provided with an annular baffle (13), the annular baffle (13) is sleeved on the outer ring of the air hole (7), and the bottom surface of the annular baffle (13) is contacted with the top surface of the sealing gasket (4).

4. An GVV safety valve for a fuel tank according to claim 3, wherein: the top inner circle rigid coupling position sleeve (14) of core cover (2), the inner circle of position sleeve (14) is provided with fender ring (15), the outer lane in gas pocket (7) is overlapped to the inner circle that keeps off ring (15), the gas tank is all seted up with the both sides that keep off ring (15) to the both sides of position sleeve (14), the inner circle slidable mounting of position sleeve (14) presses seat (16), the top of pressing seat (16) is provided with first spring (17), the top outer lane lock joint clamp plate (18) of core cover (2), the bottom surface extrusion first spring (17) of clamp plate (18), the top outer lane of core cover (2) is provided with first sealing washer (19).

5. An GVV safety valve for a fuel tank according to claim 4, wherein: the bottom surface joint base (20) of core cover (2), round hole (21) are seted up at the middle part of base (20), a plurality of blend stop (22) of inner circle rigid coupling of round hole (21), it is a plurality of the inner circle of blend stop (22) and the bottom sliding fit of float (3), a plurality of through-holes (23) are seted up to the outer lane of base (20), the bottom outer lane of float (3) is provided with second spring (24), the top surface of base (20) and the bottom contact of second spring (24).

6. An GVV safety valve for a fuel tank according to claim 5, wherein: the outer lane of float (3) is provided with a plurality of sand grips (25), and is a plurality of the outer lane of sand grip (25) and the inner circle sliding fit of core cover (2), the both sides of core cover (2) set up a plurality of oil gallery (26), spout (27) are all seted up to the outer lane both sides of float (3), slide rail (28) are all seted up to the inner circle both sides of core cover (2), the lateral wall of slide rail (28) and the lateral wall sliding fit of spout (27).