Straight valve for liquid fuel filling tank body

Abstract

The utility model discloses a straight valve for a liquid fuel filling tank body, which comprises a main valve body, a medium channel is formed in the main valve body, and a first liquid end and a second liquid end with coincident central axes are respectively arranged at two end parts of the main valve body; the release assembly and the one-way assembly are respectively mounted on the main valve body; a valve body core in threaded connection with the main valve body is arranged in the main valve body and close to the first liquid end, and a core spring sleeve, a valve core spring and a valve core rod matched with the first liquid end are sequentially sleeved with the valve body core; the liquid pumping pipe is connected with the second liquid end; the first liquid end and the second liquid end are arranged at the two ends of the main valve body, the central axes of the first liquid end and the second liquid end coincide, the straight valve is communicated with external filling equipment, a liquid fuel medium is filled into a tank body, external force borne by the valve and the tank body is in a balanced state, the tank body cannot topple over, and the service life of the tank body is prolonged. And auxiliary support provided by manual work or external tools is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and particularly relates to a straight valve for a liquid fuel filling tank body. Background Art

[0002] Due to the relatively low economic cost, methanol is being gradually promoted in the gas industry. When filling liquid fuels such as methanol, a patented steel tank body is required. A valve suitable for liquid fuel media is provided on the steel tank body.

[0003] The traditional valve suitable for this tank body is an angle valve. In practice, it is found that the angle valve type valve will cause trouble in the existing automatic fuel medium filling process. For example, when connecting to the filling equipment through the angle valve, the tank body is affected by external forces at the angle valve, and the tank body is unbalanced in force, and there is a possibility of tipping over. Therefore, additional tools or personnel are required for auxiliary support, which brings inconvenience to the filling work. Content of the Utility Model

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A straight valve for a liquid fuel filling tank body, comprising:

[0006] A main valve body, with a medium channel formed inside, and a first liquid end and a second liquid end with coincident central axes are respectively opened at both ends;

[0007] A discharge component and a one-way component are respectively installed on the main valve body;

[0008] A valve body core threadedly connected to the main valve body is arranged inside the main valve body and close to the first liquid end. A core spring sleeve, a valve core spring and a valve core rod matched with the first liquid end are sequentially sleeved inside the valve body core;

[0009] A liquid extraction pipe is connected to the second liquid end;

[0010] At least one group of air flow channels communicating with the discharge component and the one-way component are opened in the main valve body, and one end of the air flow channel extends to the bottom of the main valve body.

[0011] Further, when the first liquid end cooperates with an external device, the valve core rod moves axially along the core spring sleeve, the head of the valve core rod is far from or close to the first liquid end, and the medium channel is in an open or closed state.

[0012] Further, a quick connector is arranged on one side of the main valve body where the first liquid end is located.

[0013] Further, a valve port sealing ring is also arranged at the first liquid end.

[0014] Further, the number of the air flow channels is three groups.

[0015] Further, the liquid extraction pipe has a connector that is threadedly engaged with the main valve body.

[0016] Further, the relief assembly includes a relief valve, a relief spring sleeved on the outer periphery of the relief valve, and a relief cover that is threadedly connected to the main valve body.

[0017] Further, a plurality of pressure relief holes are formed in the relief cover.

[0018] Further, the cross section of the relief valve is T-shaped, and a plurality of guide strips are uniformly distributed in the circumferential direction of the relief valve.

[0019] Further, the one-way assembly includes an intake spring, a steel ball fitted at one end of the intake spring, and a one-way cover that cooperates with the steel ball, and the one-way cover is threadedly connected to the main valve body.

[0020] Compared with the prior art, the present utility model has the following beneficial effects:

[0021] By providing a first liquid end and a second liquid end with coincident central axes at both ends of the main valve body to form a straight valve configuration, and then connecting this straight valve to an external filling device to fill the liquid fuel medium into the tank, the external forces on the valve and the tank are in a balanced state, and the tank will not tip over, eliminating the need for manual or external tool assistance for support. Description of the Drawings

[0022] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0023] Figure 2 is an exploded schematic diagram of an embodiment of the present utility model;

[0024] Figure 3 is a schematic diagram of a rotating sectional structure of an embodiment of the present utility model;

[0025] Figure 4 is Figure 3 a partial enlarged view at A in

[0026] Figure 5 is a sectional schematic diagram of an embodiment of the present utility model;

[0027] The reference numerals in the accompanying drawings of the specification include:

[0028] Main valve body 1, first liquid end 11, second liquid end 12, quick connector 13, valve port sealing ring 14, bleed component 2, bleed valve 20, guide bar 200, bleed spring 21, bleed cover 22, pressure relief hole 220, one-way component 3, intake spring 30, steel ball 31, one-way cover 32, valve body core 40, core spring sleeve 41, valve core spring 42, valve core rod 43, liquid extraction pipe 5, connector 50, air flow channel 6. Detailed implementation manners

[0029] In order to enable those skilled in the art to better understand the present utility model, the technical solution of the present utility model will be further described below in conjunction with the drawings and embodiments.

[0030] Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, rather than physical diagrams, and should not be construed as a limitation to this patent; in order to better illustrate the embodiments of the present utility model, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The same or similar reference numerals in the drawings of the embodiments of the present utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and should not be construed as a limitation to this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] As Figure 1 shown in Figure 5 Figure 1, a direct valve for a liquid fuel filling tank body of the present utility model includes a main valve body 1, a bleed component 2 and a one-way component 3;

[0032] Among them, a medium channel is formed inside the main valve body 1, and a first liquid end 11 and a second liquid end 12 with coincident central axes are respectively opened at both ends;

[0033] The bleed component 2 and the one-way component 3 are respectively installed on the main valve body 1;

[0034] The liquid extraction pipe 5 is connected to the second liquid end 12;

[0035] At least one group of air flow channels 6 communicating with the bleed component 2 and the one-way component 3 are opened in the main valve body 1, and one end of the air flow channel 6 extends to the bottom of the main valve body 1.

[0036] Among them, a valve body core 40 threadedly connected to the main valve body 1 is provided inside the main valve body 1 and near the first liquid end 11. A core spring sleeve 41, a valve core spring 42, and a valve core rod 43 cooperating with the first liquid end 11 are sequentially sleeved inside the valve body core 40;

[0037] When the first liquid end 11 cooperates with an external device, the valve core rod 43 axially moves along the core spring sleeve 41, the head of the valve core rod 43 moves away from or close to the first liquid end 11, and the medium channel is in an open or closed state.

[0038] By providing a first liquid end 11 and a second liquid end 12 with coincident central axes at both ends of the main valve body 1 to form a straight valve shape, and then connecting this straight valve to an external filling device to fill the liquid fuel medium into the tank, the external forces on the valve and the tank are in balance, and the tank will not tip over, eliminating the need for manual or external tool assistance for support.

[0039] A quick connector 13 is provided on one side of the main valve body 1 at the first liquid end 11. Through this quick connector 13, it can be quickly connected to or disconnected from an external filling device.

[0040] In addition, a valve port sealing ring 14 is also provided at the first liquid end 11.

[0041] In this embodiment, there are three groups of air flow channels 6, and the discharge assembly 2 and the one-way assembly 3 are connected to the inside of the tank through these air flow channels 6.

[0042] The liquid extraction pipe 5 has a connection head 50 that is threadedly fitted with the main valve body 1. In this structural form, it is convenient for processing and assembly. During filling or liquid discharge, this valve is connected to the liquid fuel in the tank through the liquid extraction pipe 5.

[0043] Since the fuel is a liquid medium such as methanol, during the process of filling the medium, high-pressure gas will be filled into the tank at the same time, so that during the subsequent normal use of the fuel after leaving the factory, the liquid fuel will be discharged from the first liquid end 11 together with the high-pressure gas. Among them, a valve body core 40, a core spring sleeve 41, a valve core spring 42, and a valve core rod 43 are provided in the main valve body 1 to realize the self-closing function of the external connection pipeline.

[0044] Such as Figure 2 As shown, the discharge assembly 2 includes a discharge valve 20, a discharge spring 21 sleeved on the outer periphery of the discharge valve 20, and a discharge cover 22 threadedly connected to the main valve body 1.

[0045] According to the national industry standards, after a tank containing methanol is tipped over, the medium inside cannot flow out, so the valve used in the tank has the requirement of preventing liquid leakage. For example, after the tank is tipped over, the discharge assembly 2 can be ventilated but not liquid. Specifically, the discharge valve will only open the discharge spring 21 due to the pressure when the bottle is filled at a high speed and the safety pressure is accidentally exceeded. When the discharge valve is closed, neither liquid nor air can be passed.

[0046] When filling liquid fuel, it is necessary to discharge the air in the tank in advance, and when the filling is over-pressured, the pressure can be discharged through the function of the discharge component 2.

[0047] Specifically, a plurality of pressure relief holes 220 are provided on the relief cover 22. The shape, style and number of the pressure relief holes 220 are not specifically limited.

[0048] In addition, the cross section of the discharge valve 20 is T-shaped, and a plurality of guide strips 200 are evenly distributed around the discharge valve 20. A slide groove (not shown) matching with the guide strip 200 can be provided on the main valve body 1 to make the discharge valve 20 move more smoothly.

[0049] In addition, the one-way assembly 3 includes an air intake spring 30, a steel ball 31 matched at one end of the air intake spring 30, and a one-way cover 32 matched with the steel ball 31, and the one-way cover 32 is threadedly connected to the main valve body 1. After filling, in the subsequent use of the liquid extraction process, negative pressure will be generated in the tank, and air can be replenished through the one-way valve.

[0050] When filling, there is no need to exhaust the air in the tank in advance, but filling can be carried out directly. During filling, the pressure in the bottle will increase with high-speed filling. When the pressure reaches the set pressure, the relief valve will automatically open to discharge the abnormal pressure generated by high-speed filling, so that high-speed filling is not affected. In addition, since the filling is done upright, the relief port is located at the air level in the bottle, so it only releases the overpressure gas, and no liquid will flow out.

[0051] Due to the safety filling standards, filling must ensure that a 3% safety space must be left under any circumstances. Therefore, when filling, there is no need to release the pressure in advance, and there is no need to worry about the liquid leaking out due to overpressure release.

[0052] It should be noted that when the bottle is accidentally tipped over, the liquid will not be discharged, because the weight pressure of the tipped liquid cannot open the relief valve at all, because the opening pressure of the relief valve is at least 5 times greater than the weight pressure of the liquid. Therefore, there is no need to worry about the liquefaction leakage of the tipped bottle, and its one-way valve can only take in air when there is negative pressure inside, and it will not leak liquid if it closes in the reverse direction.

[0053] The above are only the embodiments of the present utility model. Specific structures and common knowledge such as characteristics that are well-known in the art are not described in detail herein. Those of ordinary skill in the art know all the common general technical knowledge in the technical field to which the utility model pertains before the filing date or the priority date, are able to acquire all the existing technologies in this field, and have the ability to apply the conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given in this application, combine their own abilities to improve and implement this solution. Some typical well-known structures or well-known methods should not become obstacles for those of ordinary skill in the art to implement this application. It should be noted that for those skilled in the art, without departing from the structure of the present utility model, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicality of the patent.

Claims

1. A straight valve for a liquid fuel filling tank, characterized in that: include: The main valve body has a medium channel formed inside, and two ends thereof are respectively provided with a first liquid end and a second liquid end whose central axes coincide with each other; The discharge assembly and the one-way assembly are respectively installed on the main valve body; A valve body core is provided in the main valve body and near the first liquid end, and is threadedly connected to the main valve body. A core spring sleeve, a valve core spring and a valve core rod matched with the first liquid end are sequentially sleeved inside the valve body core. A liquid extraction tube connected to the second liquid end; At least one group of air flow channels connected with the discharge assembly and the one-way assembly is provided in the main valve body, and one end of the air flow channel extends to the bottom of the main valve body.

2. A straight valve for a liquid fuel filling tank as claimed in claim 1, characterized in that: When the first liquid end cooperates with an external device, the valve core rod moves axially along the core spring sleeve, the valve core rod head moves away from or close to the first liquid end, and the medium channel is in an open or closed state.

3. A straight valve for a liquid fuel filling tank as claimed in claim 1 or 2, characterized in that: The main valve body is provided with a quick connector at one side of the first liquid end.

4. A straight valve for a liquid fuel filling tank as claimed in claim 3, characterized in that: A valve port sealing ring is also provided at the first liquid end.

5. A straight valve for a liquid fuel filling tank as claimed in claim 1, 2 or 4, characterized in that: The air flow channels are divided into three groups.

6. A straight valve for a liquid fuel filling tank as claimed in claim 5, characterized in that: The liquid extraction tube has a connector which is threadably matched with the main valve body.

7. A straight valve for a liquid fuel filling tank as claimed in claim 1, 2, 4 or 6, characterized in that: The discharge assembly comprises a discharge valve, a discharge spring sleeved on the outer periphery of the discharge valve, and a discharge cover threadedly connected to the main valve body.

8. A straight valve for a liquid fuel filling tank as claimed in claim 7, characterized in that: The discharge cover is provided with a plurality of pressure relief holes.

9. A straight valve for a liquid fuel filling tank as claimed in claim 7, characterized in that: The cross section of the discharge valve is T-shaped, and a plurality of guide strips are evenly distributed on the circumference of the discharge valve.

10. A straight valve for a liquid fuel filling tank as claimed in claim 1 or 2 or 4 or 6 or 8 or 9, characterized in that: The one-way component comprises an air intake spring, a steel ball matched with one end of the air intake spring, and a one-way cover matched with the steel ball, and the one-way cover is threadedly connected with the main valve body.

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