TWM597327U - Structure of activated filtering carbon canister for vehicle oil and gas recovery - Google Patents

Abstract

This creation is about an activated carbon filter tank structure for vehicle oil and gas recovery, including a tank body, a partition and an activated carbon filter layer. The tank body has an oil and gas inlet and an oil and gas recovery port adjacent to it, and there is an air vent on the tank body; the partition is placed in the tank body to separate the tank body area from an inlet area and a filtering area, The oil and gas inlet and the oil and gas recovery port communicate with the inlet area, the separator has a through hole correspondingly located between the oil and gas inlet and the oil and gas recovery port; the activated carbon filter layer is placed in the filter area, the oil and gas inlet and the communication port The atmospheric port communicates through the activated carbon filter layer. Through the through hole of the separator corresponding to the oil and gas inlet and the oil and gas recovery port, the volume of the tank body at the outer edge of the oil and gas inlet and the oil and gas recovery port can be reduced, so that the activated carbon of the activated carbon filter layer can be averaged Fully used to reduce the amount of activated carbon used in the activated carbon filter layer.

Description

Structure of activated filtering carbon canister for vehicle oil and gas recovery

This creation is about an activated carbon filter structure for vehicle oil and gas recovery, in particular, it can make the activated carbon of the activated carbon filter layer of the carbon can be used evenly and fully, and can reduce the activated carbon filter layer of the carbon can Usage volume creation.

The convection holes of the fuel tanks of early steam locomotives are directly connected to the outside air, so after the gasoline in the fuel tank volatilizes, it will directly escape to the atmosphere from the convection holes, but the volatile oil and gas contains a large amount of hydrocarbons, so when the oil and gas dissipates Not only will it cause air pollution when it reaches the atmosphere, but it will also cause health hazards when inhaled into the human body.

To solve this problem, the industry connects the convection holes of the fuel tank to the filter carbon tank. When the oil and gas volatilizes, it first passes through the activated carbon filter layer of the carbon tank to remove most of the hydrocarbons, and then is discharged into the atmosphere to reduce Pollutants discharged.

However, when the steam locomotive does not start, the gasoline in the fuel tank continues to volatilize. For a long time, the volatilized oil and gas is also very considerable and causes waste. Therefore, there is the "filter device" of the new patent No. M528787 of the Republic of China. The tank is further connected to the carburetor and the oil and gas control valve. When the steam locomotive starts, a negative pressure is generated through the oil and gas control valve to suck the volatile oil and gas in the oil tank into the carburetor, and enter the air valve together with the gasoline in the oil tank The mixed air is mixed into fuel gas and used in the engine cylinder to achieve the effect of oil and gas recovery and reuse.

In this case, the oil and gas inlet of the carbon tank and the oil and gas recovery port of the oil and gas recovery directly contact the foam layer, so after the volatile oil and gas enters the carbon tank through the oil and gas inlet, it first passes through the foam layer and then enters the activated carbon filter layer . When the steam locomotive starts, because the negative pressure effect causes the oil and gas to be extracted into the carburetor through the oil and gas recovery port, and because the fluid will move in the smallest path, when the steam locomotive starts, the oil and gas usually does not enter the activated carbon filter layer And directly discharged through the oil and gas recovery port. And the oil and gas inlet of the carbon canister in this case is set at the central position of the carbon canister, and the oil and gas recovery port for oil and gas recovery is located on one side adjacent to the oil and gas inlet. At this time, when oil and gas enters the carbon canister, it usually does not flow through The other side of the carbon canister, therefore, the activated carbon filter layer in the carbon canister is relatively used less than the other side of the oil and gas recovery port. When the activated carbon filter layer at the central position or close to the oil and gas recovery port is required due to saturation At the time of replacement, the activated carbon filter layer on the other side is usually in a usable state, and the main cost of the carbon canister usually comes from the activated carbon filter layer. Therefore, replacing the activated carbon filter layer often causes waste and high cost.

Refer to the twelfth and thirteenth figures, the above oil and gas recovery method is used in the traditional carbon canister (B) structure, the carbon canister (B) has an oil and gas inlet (B1) and an oil and gas recovery port (B2) ), the oil and gas inlet (B1) and the oil and gas recovery port (B2) are located on the top surface of the carbon canister (B), and on both sides of the top surface of the carbon canister (B), in the carbon canister (B ) An activated carbon filter layer (B3) in which activated carbon is placed in parallel, and an air vent (B4) on the carbon canister (B) communicates with the oil and gas inlet (B1) through the activated carbon filter layer (B3). When the volatile oil and gas in the oil tank enters the carbon canister (B) from the oil and gas inlet (B1), the oil and gas usually passes through the activated carbon filter layer (B3) on the side near the oil and gas inlet (B1), and then passes through the vent (B4) Discharge. When the engine is started, the volatilized oil and gas also travels the shortest path due to the negative pressure and does not pass through the activated carbon filter layer (B3) on the side near the oil and gas recovery port (B2). Therefore, when the activated carbon filter layer (B3) on the side near the oil and gas inlet (B1) reaches saturation and needs to be replaced, the activated carbon filter layer (B3) on the side near the oil and gas recovery port (B2) is still in a usable state. At this time, the replacement also caused problems of waste and high cost.

Therefore, in order to ensure that the oil and gas is filtered through the activated carbon filter layer and at the same time improve the utilization rate of the activated carbon filter layer, this creation proposes an activated filter carbon tank structure for vehicle oil and gas recovery, which includes a tank body, a separator and an activated carbon filter layer. among them:

The tank body has an oil and gas inlet and an oil and gas recovery port adjacent to each other, and an air vent is provided on the tank body; the partition is placed in the tank body, and the partition separates the tank body area from an inlet area and A filtering area, the oil and gas inlet and the oil and gas recovery port communicate with the inlet area, and the partition has a through hole to connect the inlet area and the filtering area, and the through hole corresponds to the oil and gas inlet and the oil and gas recovery port; The activated carbon filter layer is placed in the filter area of the tank body, and the oil and gas inlet and the vent are connected through the activated carbon filter layer.

Further, the oil and gas inlet and the oil and gas recovery port are provided on both sides of the central position of the tank body.

Further, a first foam layer is located between the separator and the activated carbon filter layer.

Further, the tank body includes a main body and a bottom cover, and the air vent is located on the bottom cover.

Further, a second foam layer is located between the activated carbon filter layer and the bottom cover.

Further, a diffusion plate is located between the second foam layer and the bottom cover.

According to the above technical features, the following effects can be achieved:

1. By placing a separator in the tank body and making the through hole of the separator correspond to the oil and gas inlet and the oil and gas recovery port, the use efficiency of the activated carbon filter layer is improved, and the tank cost can be further reduced Position the volume at the outer edge of the oil and gas inlet and the oil and gas recovery port to reduce the amount of activated carbon used by the activated carbon filter layer. Therefore, preferably, the oil and gas inlet and the oil and gas recovery port can be provided on both sides of the central position of the tank body.

2. The oil and gas entering the activated carbon filter layer can be preliminarily filtered through the first foam layer; and through the second foam layer, when the engine is started and the fuel tank is fed with oil to the regulating valve, when air enters the tank body , Preliminary filtering the air entering the activated carbon filter layer.

3. When the engine is started and the tank is fed with oil to the regulating valve, when air enters the tank body through the vent, it can evenly pass through the activated carbon filter layer through the diffusion plate.

Based on the above technical features, the main functions of the activated filter carbon tank structure for vehicle oil and gas recovery will be clearly presented in the following embodiments.

Referring to the first and second figures, the carbon canister (A) of this embodiment includes a canister body (1), a separator (2), a first foam layer (3), and an activated carbon filter layer (4), a second foam layer (5), a diffusion plate (6) and an oil and gas control throttle structure (7), wherein the first foam layer (3) and the second foam layer (5 ) Can also be non-woven fabric layer or filter paper layer and the like. In this embodiment, the tank body (1) includes a main body (11) and a bottom cover (12), an oil and gas inlet (111) and an oil and gas recovery port (112) are adjacently arranged on the body (11), and the oil and gas The inlet (111) and the oil and gas recovery port (112) are provided on both sides of the central position of the main body (11), and there is another atmospheric vent (121) on the tank body (1), the atmospheric vent (121) Is located on the bottom cover (12), and has an accommodating portion (113) at the oil and gas inlet (111), the oil and gas control throttling structure (7) is provided at the accommodating portion (113), the oil and gas control joint The flow structure (7) includes a base (71), a first elastic member (72), an operating member (73), a second elastic member (74) and a cover member (75).

Referring to the third and fourth figures, the partition (2) is placed in the body (11), and the partition (2) separates the body (11) from an entrance area (114) and an active area The carbon filter area (115), the oil and gas inlet (111) and the oil and gas recovery port (112) communicate with the inlet area (114), the partition plate (2) and a through hole (21) communicate with the inlet area (114) and The activated carbon filter area (115), the through hole (21) are correspondingly located between the oil and gas inlet (111) and the oil and gas recovery port (112), and the activated carbon filter layer (4) is placed in the main body (11) Activated carbon filter area (115), the oil and gas inlet (111) and the air vent (121) are connected through the activated carbon filter layer (4), the first foam layer (3) is located on the separator ( 2) Between the activated carbon filter layer (4), the second foam layer (5) is located under the activated carbon filter layer (4), and the diffusion plate (6) is located in the second foam layer ( 5) Below, the main body (11) is closed by the bottom cover (12).

Referring to the fourth and fifth figures, in the oil and gas control throttle structure (7), the base (71) is provided in the accommodating portion (113), and is connected to the oil and gas inlet (111) and the volume The inner walls of the placement portion (113) are all separated by a distance. In this embodiment, the base (71) includes a base (711) and a diaphragm (712). Both ends of the base (71) penetrate through and penetrate the A base (711) and the diaphragm (712), and a space (7111) is formed inside the base (711), the space (7111) communicates with the oil and gas inlet (111), and the base (711) extends toward the periphery There is a blocking portion (7112), and the diaphragm (712) has a first resisting portion (7121) and a second resisting portion (7122), such as the first resisting portion (7121) and the second resisting portion (7122) ) Is an annular rib provided on the diaphragm (712). In this embodiment, the diaphragm (712) is a rubber seal, and the first elastic member (72) is disposed on the outer edge of the base (711), so that The first elastic member (72) resists between the periphery of the oil and gas inlet (111) and the blocking portion (7112); the operating member (73) has an extending portion (731) and an operating portion (732), the extending The entry portion (731) extends into the space (7111) of the base (71), makes the operation portion (732) abut the first abutment portion (7121) to close the space (7111), and the second elastic member ( 74) A space (7111) provided in the base (71), and the second elastic member (74) is fixed in the extending portion (731) of the operating member (73) and abuts against the space (7111) In this embodiment, the projecting portion (731) has an internal recess (7311), the second elastic member (74) is inserted into the internal recess (7311); the cover (75) covers the receiving portion (113) ), and keep a distance from the operating part (732) of the operating part (73), the cover (75) extends a tube connecting part (751), the cover (75) has a contact surface (752) against The second contact portion (7122) of the base (71) separates the pipe connection portion (751) and the accommodating portion (113).

Refer to the sixth figure to illustrate the use of the carbon canister (A) of this creation for the locomotive fuel supply system. The locomotive fuel supply system includes: an oil tank (10); the connection of the carbon canister (A) of this creation (751) Connected to the oil tank (10); an oil and gas control valve (20) is connected to the oil and gas recovery port (112) of the original carbon canister (A); a regulating valve (30) is connected to the oil tank (10) and the oil and gas control Valve (20); an air valve (40) is connected to the regulating valve (30), and usually the air valve (40) is provided with an air filter to filter the air entering the system; an engine cylinder (50) is connected to the Regulating valve (30). It should be further explained that the locomotive fuel supply system of this embodiment is an injection engine, so the system does not use a carburetor to adjust the gasoline that the fuel tank (10) enters into the engine cylinder (50), but uses the microcomputer control of the locomotive to The opening and closing of the regulating valve (30) is controlled to accurately control the amount of gasoline in the fuel tank (10) entering the engine cylinder (50), so as to improve the problem of inaccurate control of the fuel intake of the carburetor.

Referring to the sixth, seventh and eighth figures, when the fuel supply system of the locomotive does not start, the gasoline in the fuel tank (10) will continue to volatilize and enter the oil and gas through the pipe joint (751) Control the throttling structure (7), and when the pressure of the volatile oil and gas is less than the elastic force of the first elastic member (72), the contact surface (752) of the cover member (75) continues to contact the base (71) The second abutting portion (7122) separates the pipe connecting portion (751) and the accommodating portion (113), so the volatile oil and gas cannot enter the tank body (1) [as shown in the fifth figure]. When the gasoline continues to volatilize, so that the pressure of the oil and gas is large enough to overcome the elastic force of the first elastic member (72), the first elastic member (72) is compressed, the base (71) is displaced to displace the cover The abutment surface (752) of the piece (75) is separated from the second abutment portion (7122) of the base (71) to connect the pipe connection portion (751) and the accommodating portion (113), so that oil and gas can pass through the oil and gas The inlet (111) enters the tank body (1). At this time, the oil and gas entering the tank body (1) will diffuse from the inlet area (114) to the through hole (21), and then from the through hole (21) ) Into the activated carbon filter zone (115), the oil and gas entering the activated carbon filter zone (115) can be preliminarily filtered through the first foam layer (3), after which the activated carbon filter layer (4 ) Filter most of the hydrocarbons, and then pass through the second foam layer (5) and the diffusion plate (6), and then discharged into the atmosphere from the air vent (121) to reduce hydrocarbon pollution. By placing the separator (2) in the tank body (1) and making the through hole (21) of the separator (2) correspond to the oil and gas inlet (111) and the oil and gas recovery port (112), The use efficiency of the activated carbon filter layer (4) is improved, and the volume of the tank body (1) at the outer edge of the oil and gas inlet (111) and the oil and gas recovery port (112) can be further reduced to reduce the activated carbon The amount of activated carbon used in the filter layer (4) can be extended to the activated carbon filter layer (4) by connecting the pipe connection part (751) and the accommodating part (113) only when the oil and gas pressure is sufficient. Service life.

Referring to the sixth and ninth figures, when the engine is started, a negative pressure is generated through the oil and gas control valve (20), and the oil and gas entering the activated carbon filter area (115) can be permeated from the separator (2) It is sucked out from the hole (21) and discharged from the tank body (1) through the oil and gas recovery port (112) to enter the regulating valve (30), and it will first interact with the air valve (40) before entering the regulating valve (30) ) The incoming air is mixed with gasoline from the fuel tank (10) into the regulator valve (30) to form a mixed fuel gas, which is then used in the engine cylinder (50) to achieve the effect of oil and gas recovery and reuse.

Referring to the sixth, tenth and eleventh figures, when the fuel supply system is started, the gasoline in the fuel tank (10) will enter the regulating valve (30) and a negative pressure is formed in the fuel tank (10), When the negative pressure is greater than the elastic force of the second elastic member (74), the operating member (73) will be displaced to disengage the operating part (732) from the first abutting part (7121) to connect the tube connection part ( 751) and the accommodating portion (113), at this time, the air will enter the tank body (1) through the air vent (121), and evenly disperse the incoming air through the diffusion plate (6), and then pass through the second bubble After the cotton layer (5) preliminarily filters the incoming air, the air passes through the activated carbon filter layer (4) and enters the oil tank (10) through the oil and gas control throttle structure (7) to form a convection effect, so that the oil tank (5) 10) The gasoline in the can continue to enter the regulating valve (30) to maintain the operation of the engine cylinder (50).

Based on the description of the above embodiments, the operation, use and effects of this creation can be fully understood. However, the above-mentioned embodiments are only the preferred embodiments of this creation, which should not be used to limit the implementation of this creation. The scope, that is, simple equivalent changes and modifications made in accordance with the scope of patent application for the creation and the content of the creation description, are all covered by the scope of the creation.

(A): Carbon canister (1): tank body (11): Subject (111): Oil and gas imports (112): Oil and gas recovery port (113): Accommodation Department (114): Entrance area (115): Activated carbon filter area (12): bottom cover (121): vent (2): partition (21): through hole (3): The first foam layer (4): activated carbon filter layer (5): Second foam layer (6): Diffusion plate (7): Oil and gas control throttling structure (71): Base (711): Base (7111): Space (7112): Block (712): diaphragm (7121): First arrival (7122): The second part (72): The first elastic piece (73): Operating part (731): Reach (7311): recessed part (732): Operation Department (74): Second elastic piece (75): cover (751): Pipe joint (752): Arrival (10): Fuel tank (20): Oil and gas control valve (30): regulating valve (40): Air valve (50): Engine cylinder (B): Carbon canister (B1): Oil and gas imports (B2): Oil and gas recovery port (B3): Activated carbon filter layer (B4): vent

[The first picture] is a three-dimensional exploded view of the tank body, partition and activated carbon filter layer of this creation.

[Second picture] is a three-dimensional exploded view of the oil and gas control throttle structure created for this.

[Third Picture] This is a three-dimensional combination drawing for this creation.

[Fourth picture] It is a combined sectional view of this creation.

[Fifth figure] It is an enlarged cross-sectional view of the oil and gas control throttle structure created for this.

[Sixth figure] This is a system architecture diagram for the creation of a fuel supply system for locomotives.

[Seventh figure] It is a schematic diagram of the pressure of oil and gas is greater than the elastic force of the first elastic member of the oil and gas control throttle structure when used in this creation, so that the oil and gas enters the tank body.

[Figure 8] is a partially enlarged view of Figure 7.

[Ninth Picture] It is a schematic diagram of the engine starting and sucking oil and gas from the oil and gas recovery port of the tank body for reuse when the creative is used.

[Tenth Picture] When the engine is used for this creation, the engine is started and air is sucked from the air vent, and the air pressure is greater than the elastic force of the second elastic member of the oil and gas control throttle structure, so that the air enters the fuel tank to form a convection effect. Schematic diagram of the pressure in the fuel tank can be balanced so that gasoline can be output to the regulator valve.

[Eleventh figure] is a partially enlarged view of the tenth figure.

[Figure 12] is one of the schematic diagrams of conventional activated carbon canisters with oil and gas recovery structure.

[Figure 13] is the second schematic diagram of the conventional activated carbon canister with oil and gas recovery structure.

(11): Subject

(111): Oil and gas imports

(112): Oil and gas recovery port

(113): Accommodation Department

(114): Entrance area

(115): Activated carbon filter area

(12): bottom cover

(121): vent

(2): partition

(21): through hole

(3): The first foam layer

(4): activated carbon filter layer

(5): Second foam layer

(6): Diffusion plate

(7): Throttling structure

Claims (6)

A structure of activated filtering carbon canister for vehicle oil and gas recovery, including: A tank body is provided with an oil and gas inlet and an oil and gas recovery port adjacent to each other, and an air vent is provided on the tank body; A baffle is placed in the tank body, the baffle separates the tank body area from an inlet area and a filtration area, the oil and gas inlet and the oil and gas recovery port communicate with the inlet area, and the separator is connected with a through hole In the inlet area and the filtration area, the through holes correspond to the oil and gas inlet and the oil and gas recovery port; An activated carbon filter layer is placed in the filter area of the tank body, and the oil and gas inlet and the vent are connected through the activated carbon filter layer. According to the structure of the activated filter carbon tank for vehicle oil and gas recovery described in item 1 of the patent application scope, further, the oil and gas inlet and the oil and gas recovery port are provided on both sides of the central position of the tank body. According to the structure of the activated filter carbon tank for vehicle oil and gas recovery described in item 1 of the patent application scope, further, there is a first foam layer between the separator and the activated carbon filter layer. According to the structure of the activated filtering carbon canister for vehicle oil and gas recovery described in item 1 of the patent application scope, further, the canister body includes a main body and a bottom cover, and the air vent is located on the bottom cover. According to the structure of the activated carbon filter tank for vehicle oil gas recovery described in item 4 of the patent application scope, further, there is a second foam layer between the activated carbon filter layer and the bottom cover. According to the structure of the activated carbon filter for vehicle oil and gas recovery described in item 5 of the patent application scope, further, a diffusion plate is located between the second foam layer and the bottom cover.

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