KR20010111917A - Valve apparatus for fule tank of LPG vehicles - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

LPG Fuel Tank

2. The technical gist of the invention

It is an object of the present invention to provide a valve device for a fuel tank of an LPG vehicle, in which various valve devices installed in a fuel tank are integrated to reduce the manufacturing cost by simplifying the configuration and the operation of each valve is linked.

3. Summary of Invention Solution

The present invention relates to a valve device for a fuel tank of an LPG vehicle, comprising: a main body having a fuel inlet and an outlet formed on one end of the fuel tank; A support is provided at the inner end of the fuel inlet, and one or more holes are formed in the support vertically, and a screw shaft is vertically elongated at the center of the support to be supported by the protective tube. The upper end of the screw shaft is fixed integrally, the bottom of the rotating cap is formed with a projection corresponding to the hole, the upper surface of the rotating cap is embedded with a magnet, the spring between the rotating cap and the support It is installed to maintain the rotating cap to move upwards, the pinion is formed at the lower end of the screw shaft is engaged with the gear of the arm shaft installed horizontally in the protective tube, the link side is long connected to the side of the arm shaft to float at the end of the link And overcharge cut valve device is installed; A float gauge device installed at a position corresponding to an upper surface of the rotating cap on an upper surface of the main body, such that the indicator is rotated by the movement of the magnetic force according to the rotation of the rotating cap; A fuel tank of the LPG vehicle including a discharge valve device having a pipe holder connected downwardly from the discharge port of the main body, the gas discharge pipe and a liquid discharge pipe, and a solenoid valve installed above the discharge port. It provides a valve device for.

4. Important uses of the invention

The present invention relates to a valve applied to the fuel tank of the LPG vehicle.

Description

Valve apparatus for fule tank of LPG vehicles}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel tank of an LPG vehicle, and more particularly, to a valve apparatus for a fuel tank of an LPG vehicle, in which various valves for properly checking fuel injection and discharge in a fuel tank are integrally formed.

Since LPG vehicles use liquefied gas as fuel, they use a fuel tank different from a gasoline engine vehicle, that is, a BOMBE, and a valve that properly regulates fuel injection and discharge and displays the state thereof. The device is installed.

That is, when a proper amount of fuel is injected into the tank, an overcharge cut valve that shuts off the inlet, a float gauge indicating the amount of fuel, and a discharge for supplying the fuel to the engine OUTLET VALVE is provided.

The discharge valve is further divided into a gas phase discharge valve for discharging gaseous fuel and a liquid discharge valve for discharging liquid fuel.

As such, the fuel tank of the LPG vehicle is required to be provided with valves having various functions. In the fuel tank of the conventional general LPG vehicle, the above valve devices are used separately.

Figure 1 is a front view schematically showing such a conventional fuel tank, Figure 2a to 2c is a side cross-sectional view showing the mounting state of each valve provided in the fuel tank.

As can be seen from these figures, the fuel tank 1 includes a float gauge device 3 (shown in FIG. 2C), a discharge valve device 4 (shown in FIG. 2B), and an overcharge cut valve device 2. (Shown in FIG. 2A) are separately installed, and the discharge valve device 4 is further divided into a gas phase discharge valve 4a and a liquid discharge valve 4b, so that all four ports are separately provided.

Therefore, the conventional fuel tank has a complicated structure and manufacturing cost increases due to the manufacture and installation of such a valve device separately, there was a problem that wastes time and manpower according to the installation work. In particular, as each valve device is operated in relation to each other, there is a problem in that mechanical errors occur easily in the connection operation, and thus the accuracy of the overall operation is lowered.

Therefore, the present invention has been made to solve the above problems, by integrating the various valve devices installed in the fuel tank to simplify the configuration to reduce the manufacturing cost and to operate the operation of each valve is linked reliably An object of the present invention is to provide a valve device for a fuel tank of an LPG vehicle.

1 is a schematic side view showing an attachment state of a valve device in a conventional fuel tank.

Figure 2a to 2c is a side cross-sectional view showing the mounting state of each valve provided in the fuel tank.

3 is a cross-sectional view of the combination of the valve device according to the present invention.

Figure 4 is a plan view of the valve device body according to the present invention.

※ Explanation of code about main part of drawing ※

11; Main body 12; Overcharge cut valve device

13; Float gauge system 14; Discharge valve

15; Fuel inlet 16; outlet

17; Relief valve 18; handle

19; Support 20; hole

21; Screw shaft 22; Sheriff

23; Rotary cap 24; spin

25; Magnet 26; spring

27; Pinion 28; Arm axis

29; Gear 30; link

31; Float 32; Graduation

33; Indicator 34; Pipe holder

In order to achieve the above object, the present invention, the fuel injection port and the discharge port is formed to be mounted on one end of the fuel tank; A support is provided at the inner end of the fuel inlet, and one or more holes are formed in the support vertically, and a screw shaft is vertically elongated at the center of the support to be supported by the protective tube. The upper end of the screw shaft is fixed integrally, the bottom of the rotating cap is formed with a projection corresponding to the hole, the upper surface of the rotating cap is embedded with a magnet, the spring between the rotating cap and the support It is installed to raise the rotary cap upwardly spaced apart from the support arch, the pinion is formed at the lower end of the screw shaft is engaged with the gear of the arm shaft installed horizontally in the protective tube, the side of the arm shaft is connected to the link long end of the link An overcharge cut valve device having a float provided thereon; A float gauge device installed at a position corresponding to an upper surface of the rotating cap on an upper surface of the main body, such that the indicator is rotated by the movement of the magnetic force according to the rotation of the rotating cap; A pipe holder is provided which is connected downwardly from the discharge port of the main body, and the gas discharge pipe and the liquid discharge pipe are installed in the pipe holder, and a discharge valve device having a solenoid valve is provided above the discharge port.

Here, the end of the gas phase discharge pipe is located in the upper end of the fuel tank, the end of the liquid discharge pipe is installed close to the bottom surface of the fuel tank.

When described in more detail with reference to the accompanying drawings as a configuration and operation of the present invention as an embodiment as follows.

Figure 3 is a side cross-sectional view showing the assembled state of the valve device according to the present invention, Figure 4 is a plan view of the valve device according to the present invention with reference to these drawings, the present invention is divided into the valve device main body 11, over The charge cut valve device 12, the float gauge device 13, and the discharge valve device 14 are formed.

The valve device main body 11 is fixedly installed in the fuel tank, and the fuel injection port 15 and the discharge port 16 communicating with the discharge valve device 14 which will be described later are penetrated, and the safety valve installation port 17 is upward. And a handle mounting port 18 for manual operation.

The overcharge cut valve device 12 is to shut off the injection port at a predetermined level when the fuel is filled when the fuel is injected, and the support 19 is fixed to the bottom of the valve device main body 11. At least two or more holes 20 communicating with the fuel inlet 15 are vertically formed in the earth 19.

The screw shaft 21 penetrates vertically to the center of the support 19 so that the screw shaft 21 can move up and down. The screw shaft 21 is supported by the protective tube 22, and the screw shaft 21 is Rotating cap 23 is fixedly installed at the inner middle of the injection hole 15.

The rotary cap 23 corresponds to the upper surface of the support 19, and the protrusion 24 is formed at the number and position corresponding to the hole 20 of the support 19 at the bottom. In addition, the upper surface of the rotating cap 23 is embedded in the magnet 25 is located at one place or two facing, the spring 26 is provided between the support 19 and the rotating cap 23 is the rotating cap 23 keeps the state always separated upward from the support 19. As shown in FIG.

A pinion 27 is formed at a lower end of the screw shaft 21, and an arm shaft 28 is horizontally installed at the lower end of the protective tube 22. A gear 29 is formed at one end of the arm shaft 28 to mesh with the pinion 27. In particular, the pinion 27 is formed of a spline so that the pinion 27 can be moved up and down while being interlocked with the gear 29.

A link 30 is long connected to one side of the arm shaft 28, and a float 31 is provided at an end of the link 30.

The float gauge device 13 is installed on the upper surface of the main body 11 to enable identification from the outside, and the scale 32 is displayed on the upper surface thereof, and an indicator 33 is installed therein. . The float gauge device 13 is installed at a position facing the rotary cap 23, wherein a magnet 25 facing the magnet 25 of the rotary cap 23 is installed at the bottom of the indicator 33. It is. Accordingly, the magnet 25a is rotated together by the magnetic force as the magnet 25 moves according to the rotation of the rotary cap 23, and the indicator 33 rotates accordingly.

The discharge valve device 14 is provided with a pipe holder 34 from the discharge port 16 of the main body 11 to the lower end, the liquid discharge pipe 36 is installed in the pipe holder 34, the discharge port 16 On the upper side of the solenoid valve 37 is provided. In addition, in the present embodiment, the gas phase discharge pipe 35 may be further provided in the branch pipe branched to the pipe holder 34.

The end of the gas phase discharge pipe 35 is bent upwards to be connected to the inner top of the fuel tank, the liquid discharge pipe 36 is formed long downward to be connected to a position close to the bottom surface of the fuel tank.

As described above, according to the present invention, the overcharge cut valve device 12, the float gauge device 13 and the discharge valve device 14 is connected to one main body 11 to provide a batch of production, installation and operation It can be done.

The operation of the present invention will be described in detail below.

First, the operation state in a state where a predetermined fuel is filled in the fuel tank will be described. The rotation cap 23 of the overcharge cut valve device 12 is spaced apart from the support 19 by a spring 26. As the water level in the fuel tank is lowered due to the use of fuel, the float 31 is gradually lowered. Accordingly, the gear 29 of the arm shaft 28 rotates, and the screw shaft 21 gradually rotates while the pinion 27 engaged with the gear 29 rotates. Then, the rotation cap 23 is gradually rotated together with the rotation of the screw shaft 21.

As the rotation cap 23 rotates, the position of the magnet 25a is moved. As a result, the indicator 33 rotates to indicate a direction in which the amount of fuel in the scale 32 is smaller.

In this state, when fuel is injected through the fuel inlet 15, the fuel is injected into the fuel tank through the holes 20 of the fuel inlet 15 and the support 19, and as the water level rises, the float 31 rises. While rising, the gear 29 of the arm shaft 28 is rotated to the opposite side to rotate the screw shaft 21 through the pinion 27. As the screw shaft 21 rotates, the rotary cap 23 rotates, and the rotary cap 23 is pressed downward while overcoming the lifting force of the spring 26 by the pressure of the fuel being injected.

When the rotary cap 23 continues to rotate to reach a predetermined position, that is, when the protrusions 24 protruding downward of the rotary cap 23 and the holes 20 of the support 19 come to the same positions, The rotation cap 23 is lowered while the cap 24 is momentarily inserted into the hole 20 while overcoming the lifting force of the spring 26 due to the high pressure of the fuel acting in the fuel inlet 15. 20) is closed, thereby completing the injection of fuel.

In general, the amount of fuel injected into the fuel tank is preferably completed in a state of about 85% filled, at which point the projection 24 of the rotary cap 23 and the hole 20 of the support 19 coincide. Set it to

In addition, the indicator 33 is rotated with the rotation of the rotary cap 23 to instruct the filling state of the fuel on the scale 32, the operation of the overcharge cut valve device 12 and the operation of the float gauge device 13 Is supposed to match.

On the other hand, the discharge port 16 in the discharge valve device 14 is blocked by the solenoid valve 37, when the solenoid valve 37 is opened due to the start of the engine, the fuel is discharged through the liquid discharge pipe (36) It is discharged to 16) to supply fuel to the engine.

On the other hand, when abnormal high pressure occurs in the tank, gas can be ejected by operating a safety valve (not shown) installed in the safety valve installation port 17, and in case of failure of the solenoid valve, manual operation is performed. Turn the handle connected to the handle installation port 18 for the supply of fuel is made.

In the present invention as described above, the overcharge cut valve device 12, the float gauge device 13 and the discharge valve device 14 is integrated to simplify the configuration, the operation of each valve can be made consistently will be.

In particular, due to the action of the float 31 in the overcharge cut valve device 12, the overcharge cut valve device as well as the float gauge device 13 can be operated together to reduce the overall number of parts and reduce the cost of the installation work You can do it easily.

The present invention described above is not limited to the above-described embodiments and drawings, and various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be obvious to him.

As described above, the present invention reduces the number of parts by integrating a liquid (gas) valve, an overcharge cut valve, and a float gauge device installed in a fuel tank, thereby reducing manufacturing cost and manufacturing labor, and simplifying installation work. It is possible to, and by making the interlocking operation to each other has the effect of accurate and reliable operation of each valve device.

Claims (7)

A main body mounted at one end of the fuel tank and having a fuel inlet and an outlet formed in communication with each other; The support is built in the bottom of the main body, the support is formed in at least one hole communicating with the fuel tank is installed on one side, the upper side of the support is spaced apart from it and the hole by the high pressure acting on the fuel inlet An overcharge cut valve means including a rotatable cap having a protrusion at a bottom thereof to close the closing portion to block injection of fuel; A rotational force providing means connected to the overcharge cut valve means to rotate the rotary cap by rotating according to the injection of fuel; And Float gauge means having an indicator installed on top of the overcharge cut valve means and indicating an increase or decrease of fuel according to its rotational operation. Valve device for the fuel tank of the LPG vehicle comprising a. The method of claim 1, A pipe holder connected to the outlet of the main body; One side thereof is mounted to the pipe holder and the other side thereof is located near the bottom surface of the fuel tank to provide a path for feeding the fuel in the fuel tank to the outside through an outlet; And The solenoid valve is installed in the upper portion of the discharge port and opened and closed according to the engine start so that fuel is introduced into the breaker side through the liquid discharge pipe. LPG vehicle fuel tank valve device further comprising a. The method of claim 2, The pipe holder further includes a branch port branched on one side thereof, The branch port of the LPG vehicle fuel tank valve device further comprises a gas phase discharge pipe bent upward to the pipe connected to the inner top of the fuel tank. The method according to any one of claims 1 to 3, The rotary cap of the overcharge cut valve means further comprises a first magnet embedded in at least one of the upper portion, The float gauge means The fuel of the LPG vehicle further includes a second magnet installed at a bottom thereof with a polarity different from the first magnet at a position opposite to the first magnet, and configured to operate the indicator while rotating together by the magnetic force according to the rotation of the first magnet. Valve device for tank. The method according to any one of claims 1 to 3, The rotational force providing means A screw shaft mounted through the support of the overcharge cut valve means; Protective tube installed on the outer peripheral surface of the screw shaft to protect it A pinion installed at a lower end of the screw shaft; An arm shaft supported at the lower end of the protective tube; A gear installed at one end of the arm shaft and engaged with the pinion; A link installed on one side of the arm shaft to rotate the arm shaft by a lifting force provided from the outside; And Float which is installed at the end of the link and rises with the inflow of fuel Valve device for the fuel tank of the LPG vehicle comprising a. According to claim 1, And a lifting force providing means for providing a lifting force such that the support of the overcharge cut valve means and the rotary cap are always spaced apart by a predetermined interval. The method of claim 6, The valve device for the fuel tank of the LPG vehicle, the lifting force providing means is made of a spring.