CN114962098B

CN114962098B - Water draining device of fuel filter and automobile

Info

Publication number: CN114962098B
Application number: CN202210513183.1A
Authority: CN
Inventors: 贾旭哲; 杨蕾; 尹燕升; 张驰
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2023-06-23
Anticipated expiration: 2042-05-11
Also published as: CN114962098A

Abstract

The invention belongs to the technical field of vehicles, and discloses a water discharging device of a fuel filter and an automobile. The device comprises a valve body, a cavity arranged in the valve body and a water outlet arranged at the bottom of the valve body; the communication part is arranged in the cavity and divides the cavity into a first cavity far away from the water outlet hole and a second cavity near the water outlet hole; the communication part is provided with a communication hole and a piston hole, and the first chamber and the second chamber are communicated through the communication hole; the piston hole is internally provided with a piston in a sliding manner, one end of the piston, which is close to the second chamber, is connected with a floating ball, and the floating ball can close or open the water outlet hole. According to the invention, the electric control components such as the sensor and the controller are not required to be arranged, so that the water discharge of the fuel filter is realized conveniently; simplifying the structure of the device and enabling the overall structure of the water discharging device to be more compact.

Description

Water draining device of fuel filter and automobile

Technical Field

The invention relates to the technical field of vehicles, in particular to a water discharging device of a fuel filter and an automobile.

Background

In order to protect the precise components of the fuel system such as a high-pressure oil pump, an oil sprayer and the like on an automobile engine, the engine or the whole automobile is provided with a fuel filter for filtering impurities and moisture in fuel. At present, various oil products appear in China, the quality is uneven, and users can choose to fill small filling stations for reducing the transportation cost, namely, the oil products are worse, and the water content is higher. The water in the fuel oil is filtered by the fuel oil filter and then is collected in the water accumulation cup at the bottom of the filter. The more the filtered water volume is accumulated, the more the user needs to regularly carry out water discharging operation, otherwise, the filtering effect of the filter is affected, and the risk of freezing and cracking of water is also caused in the water accumulating cup of the filter in winter.

The water level alarm is arranged at the bottom of the strainer in the current market, and alarms are carried out to remind a user to drain water when accumulated water reaches a set position, so that the strainer has more parts and a complex structure; some have no water level alarm, and users need to operate the water discharge regularly according to experience.

The prior art discloses an automatic water discharging device of a fuel filter, an automatic water discharging method and a vehicle, see CN105927433B, wherein the automatic water discharging device comprises an electric control water valve, a water level sensor and a controller. The electric control water valve is arranged on the fuel filter and used for discharging accumulated water in the fuel filter; the water level sensor is arranged on the fuel filter and is used for detecting the water level of accumulated water in the fuel filter; the controller is electrically connected with the water level sensor and the electric control water valve and is used for receiving a water level signal of the water level sensor and controlling the opening and closing of the electric control water valve according to the water level signal. So as to solve the problem that the fuel filter in the prior art can not automatically drain water.

The prior art also discloses a fuel filter with automatic water draining function and an automatic water draining method using the fuel filter, see CN109209707A, wherein the fuel filter comprises a fuel filter body and a water cup, the water cup comprises an oil-water separation cavity and a water storage cavity which are separated by a partition plate, an electromagnetic valve is arranged at the bottom of the partition plate, a first water gap and a second water gap are respectively arranged at two sides of the electromagnetic valve, a liquid level sensor is arranged in the oil-water separation cavity, a drain pipe is arranged in the water storage cavity, and a water inlet of the drain pipe is arranged above the second water gap of the electromagnetic valve at the position in the vertical direction. Through the fuel filter with the automatic water draining function and the automatic water draining method, accumulated water in the water cup can be automatically drained, harm to an engine caused by forgetting manual water draining of an operator is reduced, air entering the filter in the exhaust process is effectively prevented, and normal starting and running of the engine are guaranteed.

The liquid level sensor, the electric control water drain valve and the controller are arranged in the structure, when the water level is detected to be at a set position, the controller controls the electric control water drain valve to drain water, so that the automatic water drain requirement can be met, but the electronic parts are more, the electric control is relied on to realize, the components are more, and the structure is complex.

Disclosure of Invention

The invention aims to provide a water discharging device of a fuel filter, which does not need to be provided with electric control components such as a sensor, a controller and the like, so as to realize water discharging of the fuel filter; simplifying the structure of the device and enabling the structure of the water discharging device to be more compact.

To achieve the purpose, the invention adopts the following technical scheme:

a water discharging device of a fuel filter comprises

The valve body and the cavity arranged in the valve body;

the water outlet hole is arranged at the bottom of the valve body;

the communication part is arranged in the cavity and divides the cavity into a first cavity far away from the water outlet and a second cavity near the water outlet;

the communication part is provided with a communication hole and a piston hole, and the first chamber and the second chamber are communicated through the communication hole; and a piston is arranged in the piston hole in a sliding manner, one end of the piston, which is close to the second chamber, is connected with a floating ball, and the floating ball can seal or open the water outlet hole.

As a preferable mode of the water drain device of the fuel filter, the floating ball has a density larger than gasoline and smaller than water.

As an optimal scheme of the water discharging device of the fuel filter, a liquid accumulation cavity is arranged at one end, close to the water outlet hole, in the second cavity, the liquid accumulation cavity extends towards the inside of the second cavity along the water outlet hole, and the cross-sectional area of the liquid accumulation cavity is gradually increased.

As a preferred embodiment of the water drain device of the fuel filter, the piston is connected to the float ball via a piston rod.

As a preferable scheme of the water draining device of the fuel filter, the piston rod and the floating ball are integrally formed.

As a preferable scheme of the water discharging device of the fuel filter, the outer wall of the valve body is provided with threads for connecting the fuel filter.

As a preferable scheme of the water discharging device of the fuel filter, an annular groove is arranged on the outer wall of the valve body, and a sealing ring is arranged in the annular groove.

As a preferable mode of the water drain device of the fuel filter, a plurality of the communication holes are arranged along a circumferential direction of the communication portion.

As a preferable mode of the water discharging device of the fuel filter, a filter assembly is arranged in the first chamber.

An automobile comprising the water discharging device of the fuel filter in any one of the above schemes.

The beneficial effects are that:

in the present invention, the communicating portion divides the cavity into a first chamber and a second chamber, a communicating hole is provided in the communicating portion, communication between the first chamber and the second chamber is achieved through the communicating hole, the first chamber temporarily stores a mixture of water and gasoline generated by the fuel filter, and the mixture enters the second chamber through the communicating hole. The bottom of the valve body is provided with a water outlet hole through which water flows out; the communicating part is also provided with a piston hole, a piston is arranged in the piston hole in a sliding way, one end of the piston is connected with a floating ball, the water outlet hole can be closed or opened through the floating ball, and the opening and the closing of the water outlet hole are controlled through the floating ball. By utilizing the device, the arrangement of electric control components such as a sensor, a controller and the like can be avoided, and the water discharge of the fuel filter is realized; simplifying the structure of the device and enabling the structure of the water discharging device to be more compact.

Drawings

FIG. 1 is a cross-sectional view of a drain device of a fuel filter provided by an embodiment of the present invention;

fig. 2 is an isometric view of a drain assembly for a fuel filter according to an embodiment of the present invention.

In the figure:

100. a valve body; 110. a cavity; 111. a first chamber; 112. a second chamber; 1121. a effusion chamber; 120. a water outlet hole; 130. a communication section; 131. a communication hole; 132. a piston bore; 140. a piston; 141. a floating ball; 142. a piston rod; 150. a thread; 160. an annular groove; 200. a seal ring; 300. and a filter assembly.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Referring to fig. 1 and 2, in the present embodiment, the drain device of the fuel filter includes a valve body 100 and a cavity 110 in the valve body 100; the water outlet 120 is formed at the bottom of the valve body 100; the communication part 130 is arranged in the cavity 110 and divides the cavity 110 into a first chamber 111 far away from the water outlet 120 and a second chamber 112 close to the water outlet 120; the communication portion 130 is provided with a communication hole 131 and a piston hole 132, and the first chamber 111 and the second chamber 112 are communicated with each other through the communication hole 131; the piston hole 132 is slidably provided with a piston 140, one end of the piston 140, which is close to the second lower chamber 112, is connected with a floating ball 141, and the floating ball 141 can close or open the water outlet hole 120. When the vehicle starts, the fuel filter can generate a certain mixed liquid of gasoline and water to enter the water discharging device, firstly the mixed liquid enters the first chamber 111 for temporary storage, enters the second chamber 112 through the communication hole 131, the bottom of the second chamber 112 is provided with the water outlet hole 120, after the mixed liquid in the interior is continuously accumulated, the buoyancy force born by the floating ball 141 is gradually increased, and when the buoyancy force is increased to be greater than or equal to the gravity force of the floating ball 141. The float ball 141 rises along the liquid level of the mixed liquid, at this time, the water outlet hole 120 is opened because of no blocking of the float ball 141, and the mixed liquid is discharged from the water outlet hole 120 to the outside of the valve body 100; as the mixed liquid is continuously discharged, the buoyancy force applied to the floating ball 141 is gradually reduced, the floating ball 141 falls, and as the mixed liquid in the cavity 110 is continuously reduced, the floating ball 141 finally seals the water outlet 121 to isolate the cavity 110 from the external space. Further, the communication portion 130 is further provided with a piston hole 132, the piston 140 is slidably provided in the piston hole 132, and the float balls 141 are connected to the piston 140, so that the float balls 141 always move up and down in the direction of the piston 140 without being deviated during the up and down movement.

In this embodiment, the density of the floating ball 141 is greater than that of gasoline and less than that of water. When the automobile starts, the fuel filter just starts to work, the mixed liquid entering the cavity 110 is mostly gasoline, and the floating ball 141 always cannot float upwards due to the increase of the mixed liquid because the density of the floating ball 141 is higher than that of the gasoline, so that the floating ball 141 is always plugged on the water outlet 121, and the water outlet 121 is always closed; as the vehicle gradually travels, the water content in the mixed liquid in the cavity 110 increases, the density of the mixed liquid increases, and the mixed liquid approaches the density of the water, and when the density of the mixed liquid is greater than that of the floating ball 141, the floating ball 141 floats upward, and at this time, the water outlet 121 is opened to release the mixed liquid. Along with the continuous release of mixed liquor, the mixed liquor in cavity 110 gradually reduces, and floater 141 drops gradually to finally shutoff apopore 121, and further, along with the vehicle continues to travel, floater 141 periodically reciprocates, makes apopore 121's cycle close and open, has realized the function of the automatic drainage of this device, has avoided current use sensor to carry out the discernment of water level, and utilizes the scheme of controller control play water, and the structure of whole device tends to be simplified.

Alternatively, in the present embodiment, the floating ball 141 is a hollow structure, and those skilled in the art will understand that the density relationship of the floating ball 141 with respect to the gasoline and the water can be effectively adjusted by adjusting the volume of the hollow structure.

Referring to fig. 1, a liquid accumulation cavity 1121 is disposed at one end of the second chamber 112 near the water outlet 120, the liquid accumulation cavity 1121 extends toward the inside of the second chamber 112 along the water outlet 120, and the cross-sectional area of the liquid accumulation cavity 1121 is gradually increased, in this embodiment, the whole liquid accumulation cavity 1121 is an inverted cone, the structure can enable the mixed liquid to gradually gather in the water outlet 121 along the inner wall of the liquid accumulation cavity 1121, and further fit with the spherical surface of the floating ball 141 to enable the water outlet 121 to be completely blocked, so as to avoid liquid leakage.

Optionally, the piston 140 is connected to the float 141 by a piston rod 142. The height of the effusion cavity 1121 can be adapted to change by changing the length of the piston rod 142, so that the adaptability of the device is improved, namely, when the height of the effusion cavity 1121 is changed, the height of the piston 140 or the volume of the floating ball 141 is not required to be adjusted, and only the length of the piston rod 142 is required to be adjusted, so that the adjustment is simple and the adaptability is strong.

Optionally, the piston 140, the piston rod 142 and the float 141 are integrally formed. After the structure of the whole device is determined, the piston 140, the piston rod 142 and the floating ball 141 can be adjusted to be integrally formed, so that the number of matched parts is reduced, and the assembly efficiency of the device is improved.

Referring to fig. 1 and 2, in the present embodiment, a thread 150 is provided on an outer wall of the valve body 100 for connecting with a fuel filter, an annular groove 160 is provided on the outer wall of the valve body 100, and a seal ring 200 is provided in the annular groove 160. By arranging the sealing ring 200 at the front end of the threaded connection, the mixed liquid generated by the fuel filter is ensured to completely flow into the cavity 110 of the device, and leakage is avoided.

Alternatively, the plurality of communication holes 131 are arranged in the circumferential direction of the communication portion 130, and in particular, in the present embodiment, the communication holes 131 are uniformly arranged in the circumferential direction of the communication portion 130, enabling the mixed liquid entering the first chamber 111 to uniformly enter the second chamber 112, thereby stably flowing into the effusion cell 1121.

Preferably, in this embodiment, the first chamber 111 is provided with the filter assembly 300, and the filter assembly 300 is disposed between the fuel filter and the first chamber 111 to filter impurities, so as to ensure the cleanness of the cavity 110 and avoid blocking the water outlet 121 along with the long service time of the device.

In this embodiment, the present invention also relates to an automobile, in which the above water drain device of the fuel filter is mounted.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims

1. A water discharging device of a fuel filter, which is characterized by comprising

A valve body (100) and a cavity (110) provided in the valve body (100);

a water outlet (120) arranged at the bottom of the valve body (100);

a communication part (130) which is arranged in the cavity (110) and divides the cavity (110) into a first chamber (111) far away from the water outlet hole (120) and a second chamber (112) close to the water outlet hole (120);

the communication part (130) is provided with a communication hole (131) and a piston hole (132), and the first chamber (111) and the second chamber (112) are communicated through the communication hole (131); a piston (140) is arranged in the piston hole (132) in a sliding manner, one end of the piston (140) close to the second chamber (112) is connected with a floating ball (141), and the floating ball (141) can seal or open the water outlet hole (120);

the piston (140) is connected with the floating ball (141) through a piston rod (142);

the piston (140), the piston rod (142) and the floating ball (141) are integrally formed;

the density of the floating ball (141) is larger than that of gasoline and smaller than that of water;

the first chamber (111) is stepped, and the upper part with a shorter cross section is sleeved with the filter component (300), and the lower part with a longer cross section is connected with the second chamber (112) through the through hole (131).

2. The water drain device of the fuel filter according to claim 1, wherein a liquid accumulation cavity (1121) is disposed in the second chamber (112) near one end of the water outlet hole (120), the liquid accumulation cavity (1121) extends toward the inside of the second chamber (112) along the water outlet hole (120), and the cross-sectional area of the liquid accumulation cavity (1121) gradually increases.

3. The water drain device of the fuel filter according to claim 1, wherein a thread (150) is provided on an outer wall of the valve body (100) for connecting the fuel filter.

4. A water drain device of a fuel filter according to claim 3, wherein an annular groove (160) is provided on an outer wall of the valve body (100), and a seal ring (200) is provided in the annular groove (160).

5. The drain device of the fuel filter according to claim 1, wherein a plurality of the communication holes (131) are arranged along a circumferential direction of the communication portion (130).

6. An automobile comprising the water drain device of the fuel filter according to any one of claims 1 to 5.