KR200202862Y1 - Inlet valve for lp gas car - Google Patents

Abstract

The present invention relates to an overcharge preventing valve of a vehicle using LP gas as a fuel, the configuration of the injection portion for filling the fuel and the discharge portion for sending the fuel to the fuel tank filled with the injection portion is formed, respectively A valve body having a flow path communicating with the discharge part; A spindle that is operated up and down to cut off and supply fuel charged to the injection portion of the valve body, a seat pad seated at the tip of the spindle to open and close the flow path, and the spindle is fitted, and the outer circumference is inside the valve body. A manual opening / closing handle having a fixing nut coupled to the rear end, a handle fastened to a screw formed at a rear end of the fixing nut to operate the spindle up and down, and a fixing plate fixing the handle; And a shaft installed to be located at the discharge portion of the valve body, a pad coupled to open and close a flow passage through the discharge portion at the tip of the valve, and a fitting fitted to the rear end of the shaft and screwed to the inner circumference of the discharge portion. And a check valve installed between the fixture and the pad to impart elasticity to the shaft, and a fixing ring for fixing the rear end of the shaft to allow fuel to pass in one direction.

Description

Overfill valve for LPG vehicle {inlet valve for LP gas car}

The present invention relates to an overcharge preventing valve for an LP gas vehicle. More specifically, a check valve is installed as a safety device in an overcharge preventing valve of a vehicle using LP gas as a fuel, and the fuel supplied to the fuel tank is flowed back. Of course, the manual opening and closing handle to prevent the gas is to prevent the leakage of gas.

In general, vehicles using LP gas as fuel are provided with various valves and connecting pipes. That is, an overcharge preventing valve for proper filling of the fuel tank, a liquid supply valve for supplying a liquid fuel to the engine, a gas phase supply valve for supplying a gaseous fuel to the engine, and the liquid supply A liquid phase control solenoid valve and a gas phase control solenoid valve for controlling the fuel supplied to the engine by controlling the valve and the gas phase supply valve, and pipes and connectors for connecting the valves are provided.

In the above, the conventional gas valve for filling the LP gas fuel into the fuel tank, the injection section 11 that can fill the fuel as shown in Figure 1, and the fuel injected through the injection section 11 It consists of a valve body (10) formed therein the discharge portion 12 to send the fuel tank and the flow passage 13 in communication with the injection portion 11 and the discharge portion 12, respectively. In addition, the valve body 10 is provided with a manual opening and closing handle 20 that can open and close the flow path (13).

Here, the manual opening and closing handle 20 is coupled to the top and bottom of the spindle 21 and the front end of the spindle 21 so as to cut off and supply the fuel charged into the injection portion 11 of the valve body 10 An operating rod 22, a seat pad 23 seated at the tip of the operating rod 22 to open and close the flow path 13, and a stop ring 26 installed to prevent the operating rod 22 from falling out. And a handle 24 fixed to the rear end of the spindle 21 by a bolt 25 to operate the spindle 21 up and down.

A gas valve having such a structure fills fuel in a fuel tank by injecting fuel while the manual opening / closing handle 20 is opened. That is, when the knob 24 of the manual opening / closing handle 20 is turned counterclockwise, the spindle 21 coupled with the knob 24 and the bolt 25 is rotated to rise to the top, and the spindle ( As the operating rod 22 fixed to 21 is slid upward together, the seat pad 23 seated at the tip of the operating rod 22 opens the flow passage 13. Therefore, the fuel supplied to the injection portion 11 of the valve body 10 is discharged to the discharge portion 12 via the flow path 13 is filled with the fuel tank.

After filling the fuel in this way, when the knob 24 is rotated in the clockwise direction, the spindle 21 and the operating rod 22 are moved while sliding downwards, and the seat pad seated at the tip of the operating rod 22 ( 23 blocks the flow passage 13 to prevent backflow of fuel injected into the fuel tank.

As described above, after the filling of the fuel is completed, the manual opening / closing handle 20 is closed to prevent the fuel filled in the fuel tank from leaking, and thus it is used as a safety device for securing safety from a gas explosion accident.

However, the manual opening / closing handle 20 does not function properly as a safety device because the handle 24 is often rotated and opened due to vibrations or various causes when driving the vehicle.

In addition, when the manual opening and closing handle 20 is used for a long time, it loses its function due to wear of the sealing portion, etc., it has been a cause of fine gas leakage. Such leakage has been a representative cause of gas odors in conventional vehicles.

In particular, when such a manual opening and closing handle 20 is broken there was a fear that a fatal gas explosion accident occurs.

The purpose of the present invention is to solve such a problem, and by installing a check valve in the overcharge prevention valve equipped with a manual opening and closing handle to prevent the backflow of gas from the check valve and the manual opening and closing handle double to ensure more safety In order to prevent the gas accident of the vehicle to provide an overcharge preventing valve of the gas valve for the vehicle.

1 is a cross-sectional view showing a gas valve for a conventional LP gas vehicle

Figure 2 is a cross-sectional view showing an overfill prevention valve for LP gas vehicle according to the present invention

Figure 3 is a cross-sectional view showing the operating state of the overfill prevention valve for LP gas vehicle according to the present invention

4 is a cross-sectional view taken along the line A-A of FIG.

Explanation of symbols on the main parts of the drawings

100-valve body 101-injection part

102-outlet 103-flow path

200-Manual Opening Handle 201-Spindle

202-Locking Nuts 203-Seat Pads

204-Handle 205-Mounting Plate

300-check valve 301-shaft

302-Pad 303-Fixture

304-Spring 305-Retaining Ring

Hereinafter, with reference to the accompanying drawings the present invention will be described in detail.

2 is a cross-sectional view showing an overcharge preventing valve for an LP gas vehicle according to the present invention, FIG. 3 is a cross-sectional view showing an operating state of an overcharge preventing valve for an LP gas vehicle according to the present invention, and FIG. 4 is a cross-sectional view taken along the line A-A of FIG.

As illustrated, the overcharge preventing valve for an LP gas vehicle according to the present invention includes a valve body 100 including an injection part 101 into which fuel is introduced and a discharge part 102 to discharge the introduced fuel, and the valve body. The manual opening and closing handle 200 is installed to open and close the flow path of the (100) and the check valve 300 is built in the valve body 100 to prevent the back flow of the supplied fuel.

Here, the valve body 100 is formed with an injection portion 101 for filling the LP gas fuel, the discharge portion 102 for sending the fuel filled in the injection portion 101 to the fuel tank is the injection portion It is formed so as to be located in the opposite direction of the 101, the flow path 103 for communicating the injection portion 101 and the discharge portion 102 is formed.

In addition, the manual opening and closing handle 200 which is installed at one side of the injection unit 101 of the valve body 100 to block and supply fuel, blocks the fuel filled into the injection unit 101 of the valve body 100. And a spindle 201 operating up and down so as to be supplied, a seat pad 203 seated at the tip of the spindle 201 to open and close the flow path 103 is installed, and the spindle 201 is fitted therein. A fixing nut 202 having a screw 202a formed at a rear end thereof is coupled to the inside of the valve body 100, and is fastened to a screw 202a formed at a rear end of the fixing nut 202 to fix the spindle 201. The handle 204 for operating up and down is installed, and consists of a fixing plate 205 for fixing the handle 204.

In addition, the check valve 300 installed to pass the fuel in only one direction in the discharge part 102 of the valve body 100 is configured to prevent a backflow of the supplied fuel, and the discharge part of the valve body 100. A shaft 301 is installed to be positioned at 102, and a pad 302 is coupled to open and close a flow path 103 leading to the discharge part 102 at the tip of the shaft 301. A fastener 303 fitted to a rear end and screwed to the inner circumference of the discharge portion 102 is screwed to the inner circumference of the discharge portion 102, the fastener 303 and the pad 302 to give elasticity to the shaft 301 The spring 304 is installed in between, and is configured to fix the rear end of the shaft 301 with the fixing ring 305.

Reference numeral 400 denotes a safety valve to prevent the fuel tank from explosion if the pressure in the fuel tank is too high.

In order to inject fuel into the fuel tank through the overfill prevention valve for the LP gas vehicle of the present invention configured as described above, the fuel is injected by filling the fuel while the manual opening / closing handle 200 is opened. That is, when the knob 204 of the manual opening / closing handle 200 is turned counterclockwise, the handle 204 is engaged with a screw installed at the rear end of the fixing nut 202 and the spindle 201 slides upward. do.

In this case, when the seat pad 203 seated at the tip of the spindle 201 opens the flow path 103 to supply fuel to the injection portion 101 of the valve body 100, the fuel flow path 103. After being discharged to the discharge portion 102 is filled with a fuel tank.

In addition, the tip of the shaft 301 of the check valve 300 is compressed by the pressure of the fuel entering the discharge portion 102 so that the shaft 301 is pushed to the rear end while having the elastic force by the spring 304 to the A pad 302 coupled to the shaft 301 supplies fuel by opening the flow path 103. That is, the fuel entering the discharge unit 102 is supplied to the fuel tank by pushing the shaft 301 of the check valve 300 at the pressure and being discharged through the passage of the fixture 303.

In this way, when fuel is supplied to the fuel tank so that the pressure of the fuel tank becomes higher than the pressure to be filled, the overcharge of the fuel is prevented by closing the check valve 300. In other words, it prevents the fuel from flowing back into the fuel tank by preventing backflow of the fuel.

In addition, after filling the fuel in the same manner as described above by turning the handle 204 clockwise to close the manual opening and closing handle 200 to prevent the leakage of the fuel double. That is, when the knob 204 of the manual opening and closing handle 200 is turned clockwise, the knob 204 is rotated by being engaged with a screw installed at the rear end of the fixing nut 202 and the spindle 201 is slid downward so that the spindle is rotated. The seat pad 203 seated at the tip of the 201 blocks the flow path 103 to prevent the fuel from flowing back.

As such, after the filling of the fuel is completed, the manual opening / closing handle 200 is closed to prevent leakage of the fuel filled in the fuel tank, and at the same time, the fuel is prevented from flowing back from the check valve 300. It can be secured to prevent gas explosion accidents.

That is, even when the handle 204 is rotated due to vibration or various causes when the vehicle is running, and the manual opening / closing handle 200 is opened, the check valve 300 prevents a backflow to have a double safety device function.

In addition, the gas valve of the present invention prevents gas leakage from the check valve 300 even though the function of the manual opening / closing handle 200 is lost for a long time due to wear of the sealing part, and the check valve 300 Even if the sealing part of the wear) loses its function, the manual opening and closing handle 200 prevents gas leakage. That is, the gas valve of the present invention can prevent the gas explosion accident by fundamentally blocking the cause of fine gas leakage.

As described above, according to the overcharge prevention valve for an LPG vehicle according to the present invention, a check valve is installed as a safety device in an overcharge prevention valve of a vehicle using LP gas as a fuel so as to prevent backflow of fuel supplied to the fuel tank. In addition, by installing a manual opening / closing handle, it has a double safety structure that prevents gas leakage by the check valve even when the function of the check valve connected to the filling inlet is damaged or degraded (fine leakage, etc.). This can be prevented.

Claims (1)

A valve body having an injection portion capable of filling fuel and a discharge portion for sending fuel filled with the injection portion to a fuel tank, each having a flow path for communicating the injection portion with the discharge portion; A spindle that is operated up and down to cut off and supply fuel charged to the injection portion of the valve body, a seat pad seated at the tip of the spindle to open and close the flow path, and the spindle is fitted, and the outer circumference is inside the valve body. A manual opening / closing handle having a fixing nut coupled to the rear end, a handle fastened to a screw formed at a rear end of the fixing nut to operate the spindle up and down, and a fixing plate fixing the handle; And A shaft installed to be located at the discharge portion of the valve body, a pad coupled to open and close the flow passage through the discharge portion at the tip of the shaft, a fixture fitted to the rear end of the shaft, screwed to the inner circumference of the discharge portion, and having a passageway; And a check valve installed between the fixture and the pad, the spring providing elasticity to the shaft, and a fixing ring for fixing the rear end of the shaft to allow fuel to pass in one direction. Valve.