CNG cylinder valve for vehicle

Abstract

The utility model discloses a kind of vehicle CNG bottle valves, including valve body, air inlet passage is in valve body, hand wheel is installed in valve body rear end, the upper end of valve body left and right sides respectively has first gas outlet passage and second gas outlet passage, valve stem assembly is loaded into in valve body rear end, ball and the ball seat of being sleeved in ball outside are installed in valve body middle part, valve body top is screwed into a compression cap, compression cap lower end leans on the outer wall of ball seat, extrusion device for extruding ball seat is installed in compression cap lower end, compression cap lower end has vertical passage, ball has the through hole for connecting air inlet passage, vertical passage, compression cap middle part has the first transverse passage and second transverse passage that are distributed left and right and are communicated with vertical passage. By setting extrusion device in compression cap lower end, the extrusion degree of ball seat to ball can be adjusted, and then the tightness degree of ball rotation is flexibly controlled;The bottle valve can simultaneously connect two gas outlet connectors, meet the demand of vehicle equipment multi-path gas supply, greatly expand its use scene.

Description

Technical Field

[0001] This utility model relates to the field of industrial gas cylinder valve technology, specifically a CNG cylinder valve for vehicles. Background Technology

[0002] In existing CNG (compressed natural gas) cylinder valve technology, most valves are controlled by handwheels, and their internal structure is typically a ball valve. Specifically, the ball is placed on a sealing seat, the handwheel is connected to the ball via the valve stem, and the sealing seat is secured by a pressure cap. However, this design has some significant drawbacks. Firstly, the tightness of the ball's rotation is difficult to adjust flexibly according to actual needs, which may lead to less smooth valve operation or suboptimal sealing performance. Secondly, existing CNG cylinder valves only have one outlet, allowing connection to only one gas connector. This greatly limits their ease of use and applicability in applications requiring simultaneous connection to multiple devices or multi-point gas supply. Utility Model Content

[0003] In view of the above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a CNG cylinder valve for vehicles.

[0004] The technical solution of this utility model is: a CNG cylinder valve for vehicles, including a valve body with an air intake channel extending vertically inside the valve body. A flow limiting device communicating with the air intake channel is installed at the lower end of the valve body. A safety device is installed at the front end of the valve body. A handwheel is installed at the rear end of the valve body. A first air outlet channel and a second air outlet channel are respectively installed on the left and right sides of the upper end of the valve body. A connector is installed on the first air outlet channel, and a plug is installed on the second air outlet channel. A valve stem assembly extending forward and backward is installed inside the rear end of the valve body. A ball and a ball seat fitted around the ball are installed in the middle of the valve body. The ball is located above the intake channel. The front end of the valve stem assembly is fixedly connected to the rear end of the ball. A pressure cap is screwed into the top of the valve body. The lower end of the pressure cap rests against the outer wall of the ball seat. A pressing device for pressing the ball seat is installed at the lower end of the pressure cap. The lower end of the pressure cap has a vertical channel located above the ball. The ball has a through hole for connecting the intake channel and the vertical channel. The middle part of the pressure cap has a first transverse channel and a second transverse channel distributed to the left and right and connected to the vertical channel. The first transverse channel and the second transverse channel are connected to the first exhaust channel and the second exhaust channel, respectively.

[0005] Furthermore, the ball seat consists of an upper seat and a lower seat, both of which are connected vertically. The upper seat and the lower seat are respectively fitted onto the upper and lower ends of the ball, and the lower end of the pressure cap rests against the outer wall of the upper seat.

[0006] Furthermore, the compression device is a spring, and the lower end of the pressure cap has a downward-facing mounting hole. The spring extends vertically into the mounting hole, and the lower end of the spring presses against the top of the upper seat.

[0007] Furthermore, the mounting hole has a vertically extending protrusion, and the upper end of the spring is sleeved on the outside of the protrusion.

[0008] Furthermore, the right end of the first transverse channel and the left end of the second transverse channel are both connected to the upper end of the vertical channel.

[0009] The advantages of using the CNG cylinder valve for vehicles provided by this utility model are as follows: by setting a squeezing device at the lower end of the pressure cap, the squeezing force of the ball seat on the ball can be adjusted, thereby flexibly controlling the tightness of the ball's rotation; the upper left and right sides of the valve body are respectively provided with a first air outlet channel and a second air outlet channel. This design allows the cylinder valve to connect two air outlet connectors at the same time, meeting the needs of multi-way air supply for vehicle equipment and greatly expanding its application scenarios. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0011] Figure 2 for Figure 1 Cross-sectional view along the AA direction;

[0012] Figure 3 This is a partial structural schematic diagram of the present invention.

[0013] In the figure: 1—valve body, 1.1—inlet channel, 1.2—first outlet channel, 1.3—second outlet channel, 2—flow limiting device, 3—safety device, 4—handwheel, 5—connector, 6—blind end, 7—valve stem assembly, 8—ball, 81—through hole, 9—ball seat, 91—upper seat, 92—lower seat, 10—pressure cap, 101—vertical channel, 102—first transverse channel, 103—second transverse channel, 104—mounting hole, 105—protrusion, 11—spring. Detailed Implementation

[0014] To provide a more intuitive and complete understanding of the technical solution of this utility model, the following non-limiting features are described in conjunction with the accompanying drawings:

[0015] like Figure 1 — Figure 3As shown, a CNG cylinder valve for vehicles includes a valve body 1, with an intake channel 1.1 extending vertically inside the valve body 1. A flow limiting device 2 connected to the intake channel 1.1 is installed at the lower end of the valve body 1. A safety device 3 is installed at the front end of the valve body 1. A handwheel 4 is installed at the rear end of the valve body 1. A first exhaust channel 1.2 and a second exhaust channel 1.3 are respectively located on the left and right sides of the upper end of the valve body 1. A connector 5 is installed on the first exhaust channel 1.2, and a plug 6 is installed on the second exhaust channel 1.3. A valve stem assembly 7 extending forward and backward is installed inside the rear end of the valve body 1. A ball 8 and a ball seat 9 fitted around the ball 8 are installed in the middle of the valve body 1. The ball 8 is located on the intake channel 1.1. In this valve body 1, the front end of the valve stem assembly 7 is fixedly connected to the rear end of the ball 8. A pressure cap 10 is screwed into the top of the valve body 1. The lower end of the pressure cap 10 rests against the outer wall of the ball seat 9, and a compression device for compressing the ball seat 9 is installed at the lower end of the pressure cap 10. The lower end of the pressure cap 10 has a vertical channel 101 located above the ball 8. The ball 8 has a through hole 81 for connecting the air inlet channel 1.1 and the vertical channel 101. The middle part of the pressure cap 10 has a first transverse channel 102 and a second transverse channel 103 distributed to the left and right and connected to the vertical channel 101. The first transverse channel 102 and the second transverse channel 103 are connected to the first air outlet channel 1.2 and the second air outlet channel 1.3, respectively. A plug 6 is used to block the second air outlet channel 1.3. When the second air outlet channel 1.3 also needs to be vented, the plug 6 is removed and a second connector is installed.

[0016] like Figure 1 As shown, at this time, the through hole 81 of the ball 8 is not connected to the intake channel 1.1 or the vertical channel 101. When the handwheel 4 is rotated vertically, the handwheel 4 drives the valve stem assembly 7 to rotate, and the valve stem assembly 7 drives the ball 8 to rotate vertically. The through hole 81 changes from a left-right extension state to an up-down extension state, so that the through hole 81 of the ball 8 is connected to the intake channel 1.1 and the vertical channel 101.

[0017] like Figure 1 As shown, the ball seat 9 consists of an upper seat 91 and a lower seat 92. The upper seat 91 and the lower seat are connected vertically. The upper seat 91 and the lower seat 92 are respectively fitted onto the upper and lower ends of the ball 8. The lower end of the pressure cap 10 rests against the outer wall of the upper seat 91.

[0018] like Figure 3 As shown, the compression device is a spring 11. The lower end of the pressure cap 10 has a downward-facing mounting hole 104 on its inner side. The spring 11 extends vertically into the mounting hole 104, and the lower end of the spring 11 presses against the top of the upper seat 91. There are two mounting holes 104 and two springs 11. The compression force of the spring 11 on the upper seat 91 is adjusted by the tightness of the pressure cap 10, thereby changing the pressure of the upper seat 91 on the ball 8, and thus adjusting the tightness of the rotation of the ball 8.

[0019] like Figure 3As shown, in order to make the spring 11 securely installed, the mounting hole 104 has a vertically extending protrusion 105, and the upper end of the spring 11 is sleeved on the protrusion 105.

[0020] like Figure 3 As shown, the right end of the first horizontal channel 102 and the left end of the second horizontal channel 103 are both connected to the upper end of the vertical channel 101.

[0021] The CNG cylinder valve for vehicles provided by this utility model has a squeezing device at the lower end of the pressure cap 10, which can adjust the squeezing force of the ball seat 9 on the ball 8, thereby flexibly controlling the tightness of the rotation of the ball 8; the upper left and right sides of the valve body 1 are respectively provided with a first air outlet channel 1.2 and a second air outlet channel 1.3. This design allows the cylinder valve to connect two air outlet connectors at the same time, meeting the needs of multi-way air supply for vehicle equipment and greatly expanding its application scenarios.

[0022] Of course, the above are only preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any simple modifications and equivalent structural changes made based on the contents of the present utility model specification and drawings should also be included within the patent protection scope of the present utility model.

Claims

1. A CNG cylinder valve for vehicles, comprising a valve body, wherein the valve body has an intake passage extending vertically, a flow limiting device communicating with the intake passage is installed at the lower end of the valve body, a safety device is installed at the front end of the valve body, and a handwheel is installed at the rear end of the valve body, characterized in that: The valve body has a first air outlet channel and a second air outlet channel on the left and right sides of the upper end, respectively. A connector is installed on the first air outlet channel, and a plug is installed on the second air outlet channel. A valve stem assembly extending forward and backward is installed in the rear end of the valve body. A ball and a ball seat fitted on the ball are installed in the middle of the valve body. The ball is located above the air inlet channel. The front end of the valve stem assembly is fixedly connected to the rear end of the ball. A pressure cap is screwed into the top of the valve body. The lower end of the pressure cap rests against the outer wall of the ball seat, and a compression device for compressing the ball seat is installed at the lower end of the pressure cap. The lower end of the pressure cap has a vertical channel located above the ball. The ball has a through hole for connecting the air inlet channel and the vertical channel. The middle of the pressure cap has a first transverse channel and a second transverse channel distributed on the left and right and connected to the vertical channel. The first transverse channel and the second transverse channel are connected to the first air outlet channel and the second air outlet channel, respectively.

2. The CNG cylinder valve for vehicles according to claim 1, characterized in that: The ball seat consists of an upper seat and a lower seat, both of which are connected vertically. The upper seat and the lower seat are respectively fitted onto the upper and lower ends of the ball, and the lower end of the pressure cap rests against the outer wall of the upper seat.

3. A CNG cylinder valve for vehicles according to claim 1, characterized in that: The compression device is a spring. The lower end of the pressure cap has a downward-facing mounting hole. The spring extends vertically into the mounting hole, and the lower end of the spring presses against the top of the upper seat.

4. A CNG cylinder valve for vehicles according to claim 3, characterized in that: The mounting hole has a vertically extending protrusion, and the upper end of the spring is fitted over the protrusion.

5. A CNG cylinder valve for vehicles according to claim 1, characterized in that: The right end of the first horizontal channel and the left end of the second horizontal channel are both connected to the upper end of the vertical channel.

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