Cylinder head valve of seamless gas cylinder

Abstract

The utility model relates to the technical field of gas storage equipment, in particular to a cylinder head valve of a seamless gas cylinder. The bottle head valve of the seamless gas bottle comprises a valve body, a valve element, a sealing gasket, a gas filling pipe, a gas outlet pipe, a gas blocking plate and a first elastic piece, the valve element is connected to the valve body in a threaded mode, the sealing gasket is arranged at the connecting position of the valve element and the valve body, one side of the valve body is connected with the gas filling pipe, one side of the valve body is connected with the gas outlet pipe, and the gas blocking plate is connected with the gas blocking plate. The air outlet pipe is located above the air inflation pipe, an air blocking plate is slidably connected into the air inflation pipe, and a first elastic piece is arranged between the air blocking plate and the air inflation pipe in a sleeved mode. When the seamless gas cylinder is inflated through the valve body, gas enters the valve body through the gap between the gas blocking plate and the inflation pipe, and after inflation is stopped, the gas blocking plate abuts against the inner wall of the inflation pipe under the action of the first elastic piece, so that leakage of the gas in the seamless gas cylinder is avoided, and the purpose of preventing reverse flow during inflation is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas storage equipment, in particular to a bottle head valve of a seamless gas cylinder. Background Art

[0002] Seamless gas cylinders are steel cylinders made of seamless steel pipes. They are generally loaded with high-pressure gases, such as oxygen and hydrogen. The cylinder head valve, also called the container valve, is generally installed at the outlet of the cylinder and is used to control the switch of the internal loaded gas.

[0003] The patent with authorization announcement number CN217056381U proposes a marine air bottle head valve, which belongs to the technical field of marine air bottles, including: a valve stem, having a first end, a second end and a threaded section, a connecting portion on the second end, a first section and a second section on the connection, and an outer diameter of the first section is smaller than an outer diameter of the second section; the patent proposes connecting the valve stem and the valve head through the connecting portion on the valve stem and the connecting groove on the valve head, and using the sealing gasket on the valve head to achieve the effect of guiding and buffering the valve head, but when using the air bottle and inflating the air bottle, since the airway and the air inlet are straight-through settings, it is impossible to avoid the backflow of the gas in the air bottle during inflation and use, which easily causes the gas in the air bottle to leak. Utility Model Content

[0004] In order to overcome the disadvantages of the prior art that when using and inflating an air cylinder, the air passage and the air inlet are directly connected, and the backflow of the gas in the air cylinder cannot be avoided during inflation and use, thereby easily causing the gas in the air cylinder to leak, the utility model provides a seamless gas cylinder head valve.

[0005] The technical solution is: a cylinder head valve for a seamless gas cylinder, comprising a valve body, a valve core, a sealing gasket, an inflation pipe, an outlet pipe, an air blocking plate and a first elastic member, a valve core being threadedly connected to the valve body, a sealing gasket being provided at the connection between the valve core and the valve body, an inflation pipe being connected on one side of the valve body, an outlet pipe being connected on one side of the valve body, and the outlet pipe being located above the inflation pipe, an air blocking plate being slidably connected inside the inflation pipe, and a first elastic member being sleeved between the blocking plate and the inflation pipe.

[0006] As an improvement of the above solution, the cross section of the inflation tube near the valve body is trumpet-shaped.

[0007] As an improvement of the above scheme, it also includes a positioning frame, a connecting plate, a fixed bracket, a clamping rod and a second elastic member. The positioning frame is sleeved on the valve body, an annular groove is provided on the valve core, a connecting plate is rotatably arranged in the annular groove on the valve core, a side of the connecting plate away from the positioning frame is connected to the fixed bracket, a clamping rod is slidably arranged on the fixed bracket, a side of the positioning frame close to the connecting plate is provided with multiple clamping grooves in the vertical direction, the clamping rod is clamped with adjacent clamping grooves, and two second elastic members are commonly connected to the clamping rod and the connecting plate.

[0008] As an improvement of the above scheme, it also includes a connecting tube, a rubber plug first mounting frame, an announcer, a button, a limit frame, a trigger rod and a third elastic member. A connecting tube is installed on one side of the valve body, and a rubber plug is slidably connected to the inside of the connecting tube. The first mounting frame is installed on the connecting tube, and the announcer is installed on the side of the first mounting frame away from the connecting tube. A button is provided on the side of the announcer close to the connecting tube, and the announcer is electrically connected to the button. A limit frame is fixed to the inside of the connecting tube, and a trigger rod is slidably connected to the limit frame, and the trigger rod is connected to the rubber plug. A third elastic member is sleeved on the trigger rod, and the third elastic member applies a force toward the center of the valve body to the trigger rod.

[0009] As an improvement of the above scheme, it also includes a second mounting frame, a limit plate and a fourth elastic member. The second mounting frame is mounted on the valve body, a plurality of limit plates are slidably arranged on the second mounting frame, and the limit plate and the second mounting frame are commonly connected with a fourth elastic member.

[0010] As an improvement of the above solution, the number of the limiting plates is four, and two limiting plates are slidably arranged on both sides of the second mounting frame.

[0011] As an improvement of the above solution, a protective cover is also included, and the protective cover is sleeved on the outlet of the inflation tube.

[0012] As an improvement to the above solution, a connecting rod is further included, and the two limiting plates located on the same side of the second mounting frame are commonly connected with the connecting rod.

[0013] The utility model has the following advantages: 1. When the seamless gas cylinder is inflated through the valve body, the gas enters the valve body through the gap between the air blocking plate and the inflation tube. After the inflation is stopped, under the action of the first elastic member, the air blocking plate is pressed against the inner wall of the inflation tube, thereby preventing the gas in the seamless gas cylinder from leaking out, thereby achieving the purpose of preventing backflow during inflation.

[0014] 2. When inflating or deflating, fix the position of the connecting plate and the valve core through the clamping rod to prevent the position of the valve core from moving when the seamless gas cylinder is inflated or deflated, resulting in unstable airflow in and out of the seamless gas cylinder.

[0015] 3. When the seamless gas cylinder is deflated, when the gas pressure in the seamless gas cylinder is too high, the gas pushes the rubber plug to slide outward, causing the trigger rod to be squeezed and the starter to sound an alarm, so as to control the airflow through the valve body in time.

[0016] 4. When installing the valve body on a seamless gas cylinder, connect the limit plate to the handle on the seamless gas cylinder to prevent the valve body from being blown open when the gas pressure in the seamless gas cylinder is too high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a three-dimensional structural schematic diagram of the utility model.

[0018] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the valve body, rubber plug and valve core of the utility model.

[0019] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle.

[0020] Figure 4 It is a three-dimensional cross-sectional structural schematic diagram of the positioning frame, connecting plate and clamping rod of the utility model.

[0021] Figure 5 For this utility model Figure 4 Enlarged view of point B in the middle.

[0022] Figure 6 It is a three-dimensional cross-sectional structural schematic diagram of the valve body, the first mounting frame and the announcer of the utility model.

[0023] Figure 7 The utility model is a three-dimensional cross-sectional structural schematic diagram of the button, the limit frame and the trigger rod.

[0024] Figure 8 It is a three-dimensional cross-sectional structural schematic diagram of the valve core, the second mounting frame and the limit plate of the utility model.

[0025] The numbers in the figure are as follows: 1-valve body, 101-connecting pipe, 102-rubber plug, 2-valve core, 3-sealing pad, 4-inflating pipe, 401-exhaust pipe, 5-air blocking plate, 6-first elastic member, 7-positioning frame, 8-connecting plate, 801-fixing bracket, 9-clamping rod, 901-clamping slot, 10-second elastic member, 11-first mounting frame, 12-announcer, 13-button, 14-limiting frame, 15-trigger rod, 16-third elastic member, 17-second mounting frame, 18-limiting plate, 19-fourth elastic member, 20-protective cover, 21-connecting rod. DETAILED DESCRIPTION

[0026] The technical solution is further described below in conjunction with specific embodiments. It should be noted that the words indicating directions such as up, down, left, and right mentioned in this article are only for the position of the structure shown in the corresponding drawings. The serial numbers of the parts in this article, such as first, second, etc., are only used to distinguish the objects described and do not have any order or technical meaning. The words such as connection and coupling in this application include direct and indirect connection (coupling) unless otherwise specified.

[0027] Embodiment 1: A seamless gas cylinder head valve, see Figure 1-Figure 3As shown, it includes a valve body 1, a valve core 2, a sealing gasket 3, an inflation tube 4, an outlet tube 401, an air blocking plate 5 and a first elastic member 6. The valve body 1 is threadedly connected with the valve core 2, and a sealing gasket 3 is provided at the connection between the valve core 2 and the valve body 1. One side of the valve body 1 is connected with the inflation tube 4, and a protective cover 20 is provided at the outlet of the inflation tube 4. The protective cover 20 can achieve the purpose of dust prevention for the inflation tube 4. One side of the valve body 1 is connected with the outlet tube 401, and the outlet tube 401 is located above the inflation tube 4. The cross-section of the inflation tube 4 near the valve body 1 is trumpet-shaped. The inflation tube 4 is slidably connected with the air blocking plate 5. When the air blocking plate 5 slides to the trumpet-shaped part of the valve body 1, the air flow passes through the gap between the air blocking plate 5 and the inflation tube 4 and enters the valve body 1. A first elastic member 6 is provided between the air blocking plate 5 and the inflation tube 4, and the two ends of the first elastic member 6 are respectively connected to the air blocking plate 5 and the inflation tube 4.

[0028] When it is necessary to inflate the seamless gas cylinder connected to the valve body 1, first rotate the valve core 2 so that the bottom end of the valve core 2 is located above the connection between the valve core 2 and the valve body 1. At this time, the bottom of the valve core 2 is located below the outlet pipe 401, and the valve core 2 no longer blocks the air inlet end of the inflation pipe 4. Then, the protective cover 20 sleeved on the opening of the inflation pipe 4 is removed, and then the interface of the inflation device is connected to the air inlet end of the inflation pipe 4. After connection, start the inflation device again, and the inflation device transports gas into the inflation pipe 4. The gas pressure pushes the air blocking plate 5 to move backward, so that the gap between the air blocking plate 5 and the inner wall of the inflation pipe 4 becomes larger, so that the gas enters the valve body 1 through the gap between the air blocking plate 5 and the inflation pipe 4, and then passes through the valve body 1 enters the seamless gas cylinder. After the inflation is completed, the inflation device is controlled to stop running, and the inflation device stops supplying gas to the inflation tube 4. The air pressure between the inflation device and the inflation tube 4 is reduced, so that the first elastic member 6 restores the principle and drives the air blocking plate 5 to slide forward and reset, so that the air blocking plate 5 is against the inner wall of the inflation tube 4, thereby preventing the gas in the seamless gas cylinder from leaking out. Then, the valve core 2 is rotated in the opposite direction to reset, so that the valve core 2 blocks the air inlet end of the inflation tube 4 again. When the seamless gas cylinder needs to be deflated, the valve core 2 is rotated upward to move the bottom of the valve core 2 to the top of the outlet pipe 401, so that the gas in the seamless gas cylinder is discharged through the outlet pipe 401. After the deflation is completed, the valve core 2 is rotated downward to reset.

[0029] Example 2: Based on Example 1, refer to Figure 4 and Figure 5As shown, a cylinder head valve of a seamless gas cylinder also includes a positioning frame 7, a connecting plate 8, a fixed bracket 801, a clamping rod 9 and a second elastic member 10. The positioning frame 7 is sleeved on the valve body 1, and an annular groove is provided on the valve core 2. A connecting plate 8 is rotatably arranged in the annular groove on the valve core 2, and a fixed bracket 801 is connected to the side of the connecting plate 8 away from the positioning frame 7. A clamping rod 9 is slidably arranged on the fixed bracket 801. A plurality of clamping grooves 901 are provided in the vertical direction on the side of the positioning frame 7 close to the connecting plate 8. The clamping rod 9 is clamped with adjacent clamping grooves 901, and two second elastic members 10 are commonly connected to the clamping rod 9 and the connecting plate 8.

[0030] Initially, the clamping rod 9 is clamped with the clamping groove 901, so that the clamping rod 9 fixes the position of the connecting plate 8 and the valve core 2. When the seamless gas cylinder needs to be inflated or deflated, the clamping rod 9 is first slid outward, and the clamping rod 9 squeezes the second elastic member 10 to deform. At this time, the clamping rod 9 is disengaged from the clamping groove 901, and then the valve core 2 is rotated, and the valve core 2 drives the connecting plate 8 to move up and down. The position of the valve core 2 covering the inflation pipe 4 and the outlet pipe 401 changes, thereby controlling the flow rate of gas in and out of the seamless gas cylinder. When the valve core 2 is rotated to a suitable position, the clamping rod 9 is released, and the second elastic member 10 returns to its original state and drives the clamping rod 9 to slide inward, so that the clamping rod 9 is clamped with the corresponding clamping groove 901, so that the clamping rod 9 fixes the position of the connecting plate 8 and the valve core 2 again, thereby avoiding the movement of the position of the valve core 2 when the seamless gas cylinder is inflated or deflated, resulting in unstable airflow in and out of the seamless gas cylinder.

[0031] See also Figure 2 , Figure 6 and Figure 7 As shown, a cylinder head valve of a seamless gas cylinder also includes a connecting pipe 101, a rubber plug 102, a first mounting frame 11, an announcer 12, a button 13, a limit frame 14, a trigger rod 15 and a third elastic member 16. A connecting pipe 101 is installed on one side of the valve body 1, and a rubber plug 102 is slidably connected inside the connecting pipe 101. The first mounting frame 11 is installed on the side of the first mounting frame 11 away from the connecting pipe 101. The announcer 12 is installed near the connecting pipe 101. A button 13 is provided on one side of the connecting pipe 101, and the announcer 12 is electrically connected to the button 13. A limit frame 14 is fixed to the inner side of the connecting pipe 101 by welding. A trigger rod 15 is slidably connected to the limit frame 14, and the trigger rod 15 is connected to the rubber plug 102. A third elastic member 16 is sleeved on the trigger rod 15, and both ends of the third elastic member 16 are respectively connected to the rubber plug 102 and the limit frame 14, and the third elastic member 16 applies a force toward the center of the valve body 1 to the trigger rod 15.

[0032] When the seamless gas cylinder is deflated, when the gas pressure in the seamless gas cylinder is too high, the gas pushes the rubber plug 102 to slide outward when passing through the valve body 1, and the rubber plug 102 pushes the trigger rod 15 to move outward, and the trigger rod 15 squeezes the third elastic member 16 to deform, and the trigger rod 15 squeezes the button 13, causing the announcer 12 to sound an alarm, thereby prompting the operator that the gas pressure passing through the valve body 1 is too high, so as to timely control the airflow through the valve body 1. When the gas flow rate is adjusted to an appropriate range, the third elastic member 16 returns to its original state, driving the rubber plug 102 and the trigger rod 15 to slide inward and reset.

[0033] See also Figure 1 and Figure 8 As shown, a cylinder head valve of a seamless gas cylinder also includes a second mounting frame 17, a limiting plate 18 and a fourth elastic member 19. The second mounting frame 17 is mounted on the valve body 1, and a plurality of limiting plates 18 are slidably arranged on the second mounting frame 17. The number of limiting plates 18 is four, and two limiting plates 18 are slidably arranged on both sides of the second mounting frame 17, so that the force on the valve body 1 is uniform when it is fixed on the handle of the seamless gas cylinder. The limiting plate 18 and the second mounting frame 17 are commonly connected with the fourth elastic member 19, and the two ends of the fourth elastic member 19 are respectively connected to the second mounting frame 17 and the limiting plate 18, and the two limiting plates 18 located on the same side of the second mounting frame 17 are commonly connected with a connecting rod 21, and the two limiting plates 18 can be pulled simultaneously by the connecting rod 21.

[0034] When the valve body 1 is installed on the seamless gas cylinder, the limit plate 18 is pulled to both sides, and the limit plate 18 stretches the fourth elastic member 19 to deform. After the valve body 1 is connected to the seamless gas cylinder, the limit plate 18 is released, and the fourth elastic member 19 returns to its original state, driving the limit plate 18 to slide inward and clamp on the handle on the seamless gas cylinder, so as to prevent the valve body 1 from being pushed open when the gas pressure in the seamless gas cylinder is too high.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A seamless gas cylinder head valve, characterized in that: The invention comprises a valve body (1), a valve core (2), a sealing gasket (3), an inflation tube (4), an air outlet tube (401), an air blocking plate (5) and a first elastic member (6); the valve core (2) is threadedly connected to the valve body (1); a sealing gasket (3) is provided at the connection between the valve core (2) and the valve body (1); one side of the valve body (1) is connected to the inflation tube (4); one side of the valve body (1) is connected to the air outlet tube (401), and the air outlet tube (401) is located above the inflation tube (4); the inflation tube (4) is slidably connected to the air blocking plate (5); and the first elastic member (6) is sleeved between the air blocking plate (5) and the inflation tube (4).

2. A seamless gas cylinder head valve as claimed in claim 1, characterized in that: The cross section of the inflation tube (4) near the valve body (1) is trumpet-shaped.

3. A seamless gas cylinder head valve as claimed in claim 1, characterized in that: The valve body (1) further comprises a positioning frame (7), a connecting plate (8), a fixed support (801), a clamping rod (9) and a second elastic member (10); the positioning frame (7) is sleeved on the valve body (1); an annular groove is provided on the valve core (2); a connecting plate (8) is rotatably provided in the annular groove on the valve core (2); a side of the connecting plate (8) away from the positioning frame (7) is connected to the fixed support (801); a clamping rod (9) is slidably provided on the fixed support (801); a side of the positioning frame (7) close to the connecting plate (8) is provided with a plurality of clamping grooves (901) in the vertical direction; the clamping rod (9) is clamped with adjacent clamping grooves (901); and two second elastic members (10) are commonly connected to the clamping rod (9) and the connecting plate (8).

4. A seamless gas cylinder head valve as claimed in claim 1, characterized in that: The valve body (1) further comprises a connecting tube (101), a rubber plug (102), a first mounting frame (11), an announcer (12), a button (13), a limit frame (14), a trigger rod (15) and a third elastic member (16); a connecting tube (101) is mounted on one side of the valve body (1); a rubber plug (102) is slidably connected inside the connecting tube (101); the first mounting frame (11) is mounted on the connecting tube (101); and the announcer (12) is mounted on the side of the first mounting frame (11) away from the connecting tube (101). 2), a button (13) is provided on one side of the announcer (12) close to the connecting tube (101), the announcer (12) and the button (13) are electrically connected, a limit frame (14) is fixedly connected to the inner side of the connecting tube (101), a trigger rod (15) is slidably connected to the limit frame (14), and the trigger rod (15) is connected to the rubber plug (102), a third elastic member (16) is sleeved on the trigger rod (15), and the third elastic member (16) applies a force to the trigger rod (15) in the direction of the center of the valve body (1).

5. A seamless gas cylinder head valve as claimed in claim 1, characterized in that: It also includes a second mounting frame (17), a limiting plate (18) and a fourth elastic member (19); the second mounting frame (17) is mounted on the valve body (1); a plurality of limiting plates (18) are slidably arranged on the second mounting frame (17); the limiting plates (18) and the second mounting frame (17) are jointly connected to the fourth elastic member (19).

6. A seamless gas cylinder head valve as claimed in claim 5, characterized in that: The number of the limiting plates (18) is four, and two limiting plates (18) are slidably arranged on both sides of the second mounting frame (17).

7. A seamless gas cylinder head valve as claimed in claim 1, characterized in that: It also includes a protective cover (20), which is sleeved on the outlet of the inflation tube (4).

8. A seamless gas cylinder head valve as claimed in claim 6, characterized in that: It also includes a connecting rod (21), and the two limiting plates (18) located on the same side of the second mounting frame (17) are commonly connected to the connecting rod (21).

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