CN212960044U

CN212960044U - Rollover valve with noise reduction function

Info

Publication number: CN212960044U
Application number: CN202021833509.1U
Authority: CN
Inventors: 肖烈熙
Original assignee: Suzhou Zhenye Industrial Co ltd
Current assignee: Suzhou Zhenye Industrial Co ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-04-13
Anticipated expiration: 2030-08-28

Abstract

The utility model discloses a rollover valve with function of making an uproar falls, including last casing and lower casing, the side of going up the casing is equipped with the shirt rim, the lower surface of going up the casing is equipped with first recess, set up first exhaust hole and the second exhaust hole that runs through last casing on the first recess, first exhaust hole internal fixation has first one-way valve, the second exhaust hole internal fixation has the second one-way valve, the upper surface of casing is equipped with the second recess down, the third recess has been seted up to the tank bottom of second recess, the air vent that runs through casing down is seted up to the centre of third recess, the shirt rim card is located in the second recess. The utility model has the advantages that: realize pressurize and vacuum release function through two one-way valves, control accuracy is high, has adjustability and commonality, satisfies the diversified demand of user to the valve ventilation performance pressure of overturning and flow index, can the noise abatement.

Description

Rollover valve with noise reduction function

Technical Field

The utility model relates to a rollover valve technical field specifically is a rollover valve with function of making an uproar falls.

Background

The rollover valve is an important component in an automobile fuel system, is arranged on an oil tank or an oil pump flange plate and is used for balancing air pressure in the oil tank and realizing the functions of pressure maintaining and vacuum release. The existing rollover valve generally integrates the function of refueling protection, and adopts the design of a pressure maintaining disc, namely, a cylindrical space is designed at the air outlet end of an air outlet small hole of the rollover valve, and the air outlet end is connected with a metal disc. When the air pressure in the oil tank is high, the metal disc can be jacked up to play the air release function, so that the pressure in the oil tank is maintained within a certain range, and the pressure maintaining effect is achieved; when the pressure in the oil tank is small, the metal disc blocks the air outlet end to limit ventilation and play the oil refueling protection function. The metal disc pressure maintaining design is adopted by manufacturers due to simple structure, but the air flow control precision is poor due to the design of the bypass small hole and the design of the disc weight, and a large amount of matching tests are required to verify. The disc must have a certain moving space, and under the working conditions of jolting, airflow fluctuation, inclination and the like, the disc is displaced and collided, so that the noise problem is inevitably caused, and the noise problem cannot meet the quality requirement of people on products.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rollover valve with function of making an uproar is fallen to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a rollover valve with function of making an uproar is fallen, includes casing and lower casing, the side of going up the casing is equipped with the shirt rim, the lower surface of going up the casing is equipped with first recess, set up first exhaust hole and the second exhaust hole that runs through the casing on the first recess, first exhaust hole internal fixation has first one-way valve, the second exhaust hole internal fixation has the second one-way valve, the upper surface of casing is equipped with the second recess down, the third recess has been seted up to the tank bottom of second recess, the air vent that runs through casing down is seted up to the centre of third recess, the shirt rim card is located in the second recess.

Further preferably, first single-way valve contains valve body, plunger and spring, the one end of plunger is equipped with the connecting rod, and it wears to locate in the spring, plunger and spring set up in the valve body.

Preferably, the structure of the second one-way valve is the same as that of the first one-way valve, and the first one-way valve and the second one-way valve are installed in the upper shell in opposite directions.

Preferably, the skirt is arranged at the bottom of the side face of the upper shell, the skirt and the upper shell are designed into an integral structure, and a circular gap is formed between the bottom of the skirt and the bottom of the upper shell.

Further preferably, the first exhaust hole and the second exhaust hole are both designed by adopting a large-diameter hole structure and a small-diameter hole structure, and the arrangement sequence of the large diameter of the first exhaust hole is opposite to that of the large diameter of the second exhaust hole.

Further preferably, the first exhaust hole and the second exhaust hole are of a central symmetrical structure, two slotted holes which take a central connecting line of the first exhaust hole and the second exhaust hole as a symmetrical line are formed in the upper surface and the lower surface of the upper shell, and the distances from the two slotted holes in the same surface to the first exhaust hole and the second exhaust hole are equal.

Preferably, the side edge of the upper end of the vent hole is provided with a bypass small hole.

Advantageous effects

The utility model discloses a rollover valve with function of making an uproar falls realizes pressurize and vacuum release function through two single-pass valves, and control accuracy is high, has adjustability and commonality, satisfies the diversified demand of user to rollover valve ventilation performance pressure and flow index, can the noise elimination.

Drawings

Fig. 1 is an exploded structural view of a rollover valve with a noise reduction function according to an embodiment of the present invention;

fig. 2 is an isometric view of a rollover valve with noise reduction according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a lower surface of an upper housing according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an upper surface of the lower housing according to an embodiment of the present invention.

Reference numerals

1-upper shell, 11-skirt edge, 12-first groove, 13-first exhaust hole, 14-second exhaust hole, 15-slotted hole, 2-first one-way valve, 21-valve body, 22-plunger, 221-connecting rod, 23-spring, 3-second one-way valve, 4-lower shell, 41-second groove, 42-third groove, 43-vent hole and 431-bypass small hole.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 4, a rollover valve with a noise reduction function includes an upper housing 1 and a lower housing 4, a skirt 11 is disposed on a side surface of the upper housing 1, a first groove 12 is disposed on a lower surface of the upper housing 1, a first exhaust hole 13 and a second exhaust hole 14 penetrating through the upper housing 1 are disposed on the first groove 12, a first one-way valve 2 is fixed in the first exhaust hole 13, a second one-way valve 3 is fixed in the second exhaust hole 14, a second groove 41 is disposed on an upper surface of the lower housing 4, a third groove 42 is disposed at a bottom of the second groove 41, a vent hole 43 penetrating through the lower housing 4 is disposed in a middle of the third groove 42, and the skirt 11 is clamped in the second groove 41.

In the embodiment, the rollover valve realizes pressure maintaining and vacuum releasing by installing two one-way valves, the one-way valves are a first one-way valve 2 and a second one-way valve 3 which have the same structure and can be used for independently carrying out pressure-flow test, and then the matching design is carried out according to the requirement value of a customer on the rollover valve, so that the rollover valve does not need to be changed according to debugging of a valve body component of the rollover valve, and the phenomenon that the rollover valve is opened again due to the difference of the requirement value of the customer is avoided.

Preferably, the first one-way valve 2 comprises a valve body 21, a plunger 22 and a spring 23, one end of the plunger 22 is provided with a connecting rod 221 which penetrates through the spring 23, and the plunger 22 and the spring 23 are arranged in the valve body 21. In this embodiment, the valve body 21 is metal casing, the plunger 22 is made for the rubber material, and through the activity from top to bottom of plunger 22, the realization valve of overturning admit air and give vent to anger, simultaneously, the plunger 22 of rubber material does not have the collision noise when the combination of activity process and valve body 21 from top to bottom, plays the effect of making an uproar. The ventilation pressure can be adjusted by adjusting the spring 23, the adjustment is simple and convenient, and the universality and the adjustability of the rollover valve are improved.

Preferably, the structure of the second one-way valve 3 is the same as that of the first one-way valve 2, and the mounting directions of the first one-way valve 2 and the second one-way valve 3 in the upper shell 1 are opposite, so that air inlet and air outlet of the rollover valve are realized, further, pressure balance in the oil tank is maintained, and the pressure is in a certain range.

Preferably, the skirt 11 is arranged at the bottom of the side surface of the upper shell 1, the skirt and the upper shell are designed into an integral structure, and a circular gap is formed between the bottom of the skirt 11 and the bottom of the upper shell 1. In this embodiment, the skirt 11 is in interference fit with the upper casing 1, so that the joint between the upper casing 1 and the lower casing 4 is connected more tightly, a sealed space is formed, and the communication between the first exhaust hole 13, the second exhaust hole 14 and the vent hole 43 is ensured. Meanwhile, the sealing space can be used as an installation space for replacing the one-way valve with the metal disc, so that the one-way valve and the metal disc can be interchanged, and the universality of the rollover valve is improved.

Preferably, the first exhaust hole 13 and the second exhaust hole 14 are both designed by adopting a structure with large and small diameter holes, the arrangement sequence of the large and small diameters of the first exhaust hole 13 is opposite to that of the large and small diameters of the second exhaust hole 14, and the first one-way valve 2 and the second one-way valve 3 are installed. In this embodiment, the first one-way valve 2 is in interference fit with the first exhaust hole 13, the second one-way valve 3 is in interference fit with the second exhaust hole 14, the plunger 22 of the first one-way valve 2 is directed upwards, and when the pressure in the oil tank is negative, outside air can enter the oil tank through the first one-way valve 2 to supplement air; the second one-way valve 3 is opposite to the first one-way valve 2 in installation direction, and when the pressure in the oil tank is positive pressure, oil and gas in the oil tank can flow to the outside through the second one-way valve 3 to maintain the pressure in the oil tank within a certain range.

Preferably, the first exhaust hole 13 and the second exhaust hole 14 are of a central symmetrical structure, two slotted holes 15 which use the central connecting line of the first exhaust hole 13 and the second exhaust hole 14 as a symmetrical line are formed in the upper surface and the lower surface of the upper shell 1, the distances from the two slotted holes on the same surface to the first exhaust hole 13 and the second exhaust hole 14 are equal, the slotted holes 15 are designed in a triangular structure and are used for balancing the wall thickness of the first exhaust hole 13 and the wall thickness of the second exhaust hole 14, and the material reducing effect is achieved.

Preferably, the side edge of the upper end of the vent hole 43 is provided with a bypass small hole 431, the bypass small hole 431 is located in a sealed space at the joint of the upper shell 1 and the lower shell 4, when the rollover valve adopts a metal disc to replace a one-way valve, air inlet and exhaust are realized through the bypass small hole 431, namely, the balance of the pressure in the oil tank is controlled through the size of the bypass small hole 431 and the weight of the metal disc.

In this embodiment, the operating principle of the rollover valve is as follows: when the pressure in the oil tank is positive, namely the air pressure in the oil tank is greater than the external air pressure, the plunger 22 of the first one-way valve 2 blocks the air passage of the first vent hole 13 under the action of the spring 23, and the plunger 22 of the second one-way valve 3 pushes upwards under the action of the air pressure in the oil tank to open the air passage of the second vent hole 14, so that the oil gas in the oil tank is discharged from the second vent hole 14, and the pressure in the oil tank is ensured to be within a certain range. When the inside of the oil tank is negative pressure, namely the air pressure in the oil tank is smaller than the outside air pressure, the plunger 22 of the second one-way valve 3 plugs the air channel of the second vent hole 14 under the action of the spring 23, the plunger 22 of the first one-way valve 2 pushes downwards under the action of the outside air pressure, the air channel of the first vent hole 13 is opened, the outside air enters the oil tank through the first vent hole 13 to supplement air, and the balance between the outside air pressure and the air pressure in the oil tank is kept all the time. Meanwhile, the up-and-down movement of the plunger 22 does not generate noise, thereby achieving good noise reduction effect.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the content of the present invention within the protection scope of the present invention. .

Claims

1. The utility model provides a rollover valve with function of making an uproar is fallen which characterized in that: including last casing (1) and lower casing (4), the side of going up casing (1) is equipped with shirt rim (11), the lower surface of going up casing (1) is equipped with first recess (12), set up first exhaust hole (13) and second exhaust hole (14) that run through last casing (1) on first recess (12), first exhaust hole (13) internal fixation has first one-way valve (2), second exhaust hole (14) internal fixation has second one-way valve (3), the upper surface of casing (4) is equipped with second recess (41) down, third recess (42) have been seted up to the tank bottom of second recess (41), air vent (43) that run through lower casing (4) are seted up to the centre of third recess (42), shirt rim (11) card is located in second recess (41).

2. The rollover valve with a noise reduction function according to claim 1, wherein: the first one-way valve (2) comprises a valve body (21), a plunger (22) and a spring (23), a connecting rod (221) is arranged at one end of the plunger (22) and penetrates through the spring (23), and the plunger (22) and the spring (23) are arranged in the valve body (21).

3. The rollover valve with a noise reduction function according to claim 2, wherein: the structure of the second one-way valve (3) is the same as that of the first one-way valve (2), and the mounting directions of the first one-way valve (2) and the second one-way valve (3) in the upper shell (1) are opposite.

4. The rollover valve with a noise reduction function according to claim 1, wherein: the skirt edge (11) is arranged at the bottom of the side face of the upper shell (1) and is designed into an integral structure, and a circular gap is formed between the bottom of the skirt edge (11) and the bottom of the upper shell (1).

5. The rollover valve with a noise reduction function according to claim 1, wherein: first exhaust hole (13) and second exhaust hole (14) all adopt big small diameter pore structure design, the big small diameter of first exhaust hole (13) arranges the order in reverse with the big small diameter of second exhaust hole (14) arranges the order.

6. The rollover valve with a noise reduction function according to claim 1, wherein: first exhaust hole (13) and second exhaust hole (14) are central symmetry structure, go up the upper surface and the lower surface of casing (1) and all offer two slotted holes (15) that use the center-connecting line of first exhaust hole (13) and second exhaust hole (14) as the symmetric line, and two slotted holes on the same surface are equal to the distance homogeneous phase of first exhaust hole (13) and second exhaust hole (14).

7. The rollover valve with a noise reduction function according to claim 1, wherein: the side edge of the upper end of the vent hole (43) is provided with a bypass small hole (431).