CN213576798U

CN213576798U - Compressed natural gas charging valve for vehicle

Info

Publication number: CN213576798U
Application number: CN202022470531.0U
Authority: CN
Inventors: 沈云奇; 孙科; 仇领光
Original assignee: Ningbo Sanan Valve Manufacture Co ltd
Current assignee: Ningbo Sanan Valve Manufacture Co ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-06-29
Anticipated expiration: 2030-10-30

Abstract

The utility model provides a vehicle CNG inflation valve, including valve body, pressure cap, valve subassembly, valve switch and valve rod, the air intake passage has been seted up to the valve body inside, presses the cap fixed setting in the valve body top, and the valve switch rotates to be set up in pressing the cap top, and the valve subassembly sets up in the valve body, and the valve rod lower extreme is connected with the valve subassembly, and equipment fixing mouth has been seted up to air intake passage one end, and extend the air outlet channel of perpendicular setting to one side, the air inlet channel other end and air outlet channel outer end detachable are provided with the joint of ventilating, air inlet channel has been seted up to the air inlet channel below, it aerifys the hole to have seted up between air inlet channel and the air outlet channel, the valve subassembly can control the switching of aerifing the hole, lie in and seted up at least one holding tank on the valve rod in pressing the cap, set up multiple sealing washer in the holding tank, have sealed effectual characteristics, can reduce the valve rod and age the wearing and tearing and lead to the possibility of gas leakage in long-.

Description

Compressed natural gas charging valve for vehicle

Technical Field

The application relates to the technical field of valve accessories, in particular to a compressed natural gas inflation valve for a vehicle.

Background

The inflation valve is used for supplementing the natural gas to the gas holder, and current inflation valve passes through the switching of valve on-off control valve, when supplementing the natural gas, pulls out dustproof stopper, inserts the gas tube, opens the valve and can aerify, and the back that finishes is supplemented, closes the valve earlier, then pulls down the gas tube, and dustproof stopper is installed back to the dress at last, accomplishes and aerifys the step. In the process, the valve switch drives the valve rod to rotate for multiple times to realize opening and closing, abrasion and aging can occur between the movable valve rod and the valve body in the long-term use process, and a single sealing ring cannot realize better sealing performance, so that leakage danger is caused.

Therefore, it is a problem to be solved by those skilled in the art to improve and upgrade the existing inflation valve to overcome the above problems.

Disclosure of Invention

The application aims to provide a sealed effectual, can reduce the valve rod and age in the long-term use wearing and tearing and lead to the automobile-used CNG inflation valve of possibility of leaking gas.

In order to achieve the above purposes, the technical scheme adopted by the application is as follows: a compressed natural gas inflation valve for a vehicle comprises a valve body, a pressing cap, a valve component, a valve switch and a valve rod, wherein an air inlet channel is formed in the valve body, the pressing cap is fixedly arranged at the top of the valve body, the valve switch is rotatably arranged at the top of the pressing cap, the valve component is arranged in the valve body, the lower end of the valve rod is connected with the valve component, the upper end of the valve rod penetrates through the pressing cap to be fixedly connected with the valve switch, one end of the air inlet channel is provided with an equipment mounting port, a vertically arranged air outlet channel extends out to one side, the other end of the air inlet channel and the outer end of the air outlet channel are detachably provided with a ventilation joint, an inflation channel is formed below the air inlet channel, an inflation hole is formed between the air inlet channel and the inflation channel, and the, the valve rod is positioned in the pressure cap and is provided with at least one accommodating groove, and a plurality of sealing rings are arranged in the accommodating groove.

As an improvement, the top end of the inflation hole protrudes upwards to form a clamping ring, and a sealing piece matched with the clamping ring is arranged at the bottom of the valve assembly.

As an improvement, a detachable dustproof plug is arranged in the inflation channel, sealing rings are arranged at two ends of the dustproof plug, and the sealing rings are located on two sides of the inflation hole when the dustproof plug is arranged in the inflation channel.

Preferably, the sealing rings comprise a square sealing ring and an O-shaped sealing ring.

As an improvement, when the valve assembly is jacked to the clamping ring, the sealing piece can completely cover and close the clamping ring.

As an improvement, the middle part of the dustproof plug is provided with an invagination groove, and a recess matched with the invagination groove is arranged in the inflation channel.

As an improvement, the valve switch is a unilateral rotating handle.

As an improvement, the tail part of the dustproof plug is provided with a hanging ring.

Compared with the prior art, the application has the advantages that: as the only movable part in the inflation valve, the valve rod is in the long-term use, the sealing ring is aged and worn, and the risk of gas leakage is possible, therefore, in order to enhance the sealing performance of the valve rod, a plurality of accommodating grooves are arranged on the valve rod, a plurality of sealing rings are arranged in the accommodating grooves, the sealing rings and the O-shaped sealing rings are mutually matched, under the condition of ensuring the mobility of the valve rod, the air tightness in long-term use is increased, the clamping ring at the outlet of the inflation hole is matched with the sealing element on the valve assembly, a detachable dustproof plug is additionally arranged, and the sealing performance at the inflation channel is effectively increased.

Drawings

FIG. 1 is a cross-sectional view of the internal structure according to a preferred embodiment of the present application;

FIG. 2 is a top view of a preferred embodiment according to the present application;

FIG. 3 is a left side view of a preferred embodiment according to the present application;

FIG. 4 is an enlarged view at a in FIG. 1 according to a preferred embodiment of the present application;

fig. 5 is an enlarged view at b of fig. 1 according to a preferred embodiment of the present application.

In the figure: 1. a valve body; 11. an air intake passage; 111. an equipment mounting port; 12. an air outlet channel; 13. a vent fitting; 14. an inflation channel; 141. recessing; 15. an inflation hole; 151. a snap ring; 2. pressing the cap; 3. a shutter assembly; 31. a seal member; 4. opening and closing a valve; 5. a valve stem; 51. accommodating grooves; 52. a seal ring; 6. a dust plug; 61. a seal ring; 62. an invagination groove; 63. a sling ring 64 and a sling.

Detailed Description

The following description is presented to disclose the application and to enable any person skilled in the art to practice the application. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it is indicated that the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and it is only for convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The present application is further described with reference to the accompanying drawings:

as shown in fig. 1 to 5, a preferred embodiment of this application includes valve body 1, press cap 2, valve subassembly 3, valve switch 4 and valve rod 5, inlet channel 11 has been seted up to valve body 1 is inside, press cap 2 to fix and set up in 1 top of valve body, valve switch 4 rotates and sets up in pressing cap 2 top, valve subassembly 3 slides from top to bottom and sets up in valve body 1, valve rod 5 lower extreme and valve subassembly 3 lead screw are connected, can control valve subassembly 3 and slide from top to bottom through valve switch 4's rotation, valve rod 5 upper end is passed and is pressed cap 2 and valve switch 4 fixed connection.

An equipment mounting opening 111 is formed in one end of an air inlet channel 11 and can be used for mounting equipment such as a pressure gauge and the like, an air outlet channel 12 vertically arranged extends from one side, a vent joint 13 is detachably arranged at the other end of the air inlet channel 11 and the outer end of the air outlet channel 12, the vent joint 13 can be matched with vent pipelines of different specifications by replacing the vent joint to increase the adaptability of an inflation valve, an inflation channel 14 is formed below the air inlet channel 11, an inflation hole 15 is formed between the air inlet channel 11 and the inflation channel 14, a valve assembly 3 can control the opening and closing of the inflation hole 15 to prevent the inflation hole 15 from leaking air and accidents occur after the dust plug 6 is pulled out, at least one accommodating groove 51 is formed in a valve rod 5 in a press cap 2, a plurality of sealing rings 52 are arranged in the accommodating groove 51, at least two types of the sealing rings 52 can be a square sealing ring and an O, increasing the air tightness in long-term use.

The top end of the inflation hole 15 protrudes upwards to form a clamping ring 151, and the bottom of the valve assembly 3 is provided with a sealing piece 31 matched with the clamping ring 151, so that the sealing performance of the inflation hole 15 can be improved, and air leakage is reduced.

Set up detachable dustproof stopper 6 in the inflation channel 14, dustproof stopper 6 both ends are provided with sealing ring 61, and when dustproof stopper 6 set up in inflation channel 14, sealing ring 61 was located the 15 both sides of inflating, and dustproof stopper 6 is used for inflation channel 14's dustproof to and inflation channel 14's secondary seal, reduce the gas leakage, further increase the security performance.

When valve assembly 3 pushes up to joint ring 151 department, sealing member 31 can cover completely and seal joint ring 151, and sealing member 31 can be flexible rubber material, can play effectual sealed effect to gas filled hole 15 after covering joint ring 151 completely.

The middle part of the dustproof plug 6 is provided with the sunken groove 62, the inflation channel 14 is provided with the sunken 141 matched with the sunken groove 62, because the dustproof plug 6 is provided with two rings of sealing rings 61, residual gas is remained in the inflation hole 15, if the dustproof plug 6 is installed and disassembled by force, because the air pressure and the width of the inflation channel 14 influence, the disassembly and assembly can be difficult to carry out, the disassembly and assembly by force can lead to the sealing ring 61 to drop, and the sunken groove 62 and the sunken 141 are arranged to buffer.

Valve switch 4 is the unilateral swing handle, and the swing handle is more suitable for small-size valve than the hand wheel, and it is more convenient to use the operation, can set up suggestion and the sign that the rotation direction corresponds and open or close on valve switch 4, and the counter-clockwise rotation is for opening, opens and close the scope and be 180 degrees to 250 degrees.

The tail of the dustproof plug 6 is provided with a hanging strip ring 63, the hanging strip ring 63 is provided with a hanging strip 64, the dustproof plug 6 can be conveniently detached, and the hanging strip 64 can prevent the dustproof plug 6 from being lost.

The foregoing shows and describes the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims

1. The utility model provides an automobile-used CNG inflation valve, includes the valve body, presses cap, valve subassembly, valve switch and valve rod, the inside inlet channel of having seted up of valve body, press the cap fixed set up in the valve body top, valve switch rotate set up in press the cap top, valve subassembly set up in the valve body, the valve rod lower extreme with valve subassembly connects, the valve rod upper end is passed press the cap with valve switch fixed connection, its characterized in that: the improved valve is characterized in that an equipment mounting opening is formed in one end of the air inlet channel, an air outlet channel vertically arranged extends out of one side of the air inlet channel, the other end of the air inlet channel and the outer end of the air outlet channel are detachably provided with air connectors, an air inflation channel is formed below the air inlet channel, an air inflation hole is formed between the air inlet channel and the air inflation channel, the valve assembly can control the opening and closing of the air inflation hole, the air inflation channel is located in the pressure cap, at least one containing groove is formed in the valve rod, and multiple sealing rings are arranged.

2. The compressed natural gas charging valve for vehicles according to claim 1, wherein: the top end of the inflation hole protrudes upwards to form a clamping ring, and a sealing piece matched with the clamping ring is arranged at the bottom of the valve assembly.

3. The compressed natural gas charging valve for vehicles according to claim 1, wherein: the dustproof inflation device is characterized in that a detachable dustproof plug is arranged in the inflation channel, sealing rings are arranged at two ends of the dustproof plug, and the sealing rings are located on two sides of the inflation hole when the dustproof plug is arranged in the inflation channel.

4. The compressed natural gas charging valve for vehicles according to claim 1, wherein: the sealing ring comprises a square sealing washer and an O-shaped sealing ring.

5. The compressed natural gas charging valve for vehicles according to claim 2, wherein: when the valve assembly is jacked to the clamping ring, the sealing element can completely cover and close the clamping ring.

6. The compressed natural gas charging valve for vehicles as claimed in claim 3, wherein: the middle part of the dustproof plug is provided with an invagination groove, and a recess matched with the invagination groove is arranged in the inflation channel.

7. The compressed natural gas charging valve for vehicles according to claim 1, wherein: the valve switch is a unilateral rotating handle.

8. The compressed natural gas charging valve for vehicles as claimed in claim 3, wherein: the tail part of the dustproof plug is provided with a sling ring.