Liquefied gas steel cylinder valve

Abstract

The utility model relates to the technical field of liquefied gas steel cylinder valve structures, in particular to a liquefied gas steel cylinder valve which comprises a valve body and a valve rod for controlling the opening degree of a valve body channel, a square sleeve is fixedly arranged on the valve rod, the square sleeve is located above the valve body, a hand wheel is sleeved on the square sleeve, and a valve rod is arranged on the valve rod. A storage groove is formed in the hand wheel from the top end of the hand wheel to the bottom of the hand wheel, a fixing plate is arranged in the storage groove, and a battery, a label and a button switch are arranged on the fixing plate. The tag comprises a chip and an antenna connected to the chip, a reset end of the chip of the tag is connected with the battery through the button switch, and a normally closed contact of the button switch is connected with a power supply end of the battery; and a cover plate is arranged at the top of the storage groove and is pressed and buckled on a pressing cap of the button switch. The utility model provides a liquefied gas steel cylinder valve which can read information of a liquefied gas steel cylinder in multiple directions and prevent the information of the liquefied gas steel cylinder from being detached privately, and is used for overcoming the defects in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of liquefied gas cylinder valve structures, in particular to a liquefied gas cylinder valve. Background Art

[0002] Liquefied petroleum gas (LPG), a form of domestic energy, is widely used in homes, restaurants, and other places, greatly facilitating daily life. However, due to the lack of nationwide natural gas pipeline access, many households and restaurants rely on LPG to meet daily needs, such as cooking and heating water. While LPG storage is relatively simple—simply filling cylinders with LPG and then distributing it from storage and distribution stations to homes, restaurants, and other places—it can fuel various kitchen appliances. However, LPG is flammable. Therefore, if its concentration in the air reaches a certain level, it can explode when exposed to open flames, potentially causing cylinder explosions and significant harm to life and property. Based on this, the new version of the national standard GB / T 5842-2022 "Liquefied Petroleum Gas Cylinders" in 2022 clarifies the requirements for pressure non-destructive testing, air tightness testing, water pressure testing, etc. of liquefied gas cylinders, and requires that the cylinders have unique and traceable cylinder product numbers, aiming to improve the quality of liquefied petroleum gas cylinders.

[0003] To ensure the safety of life and property of LPG cylinder users, LPG cylinders are filled at designated locations. According to gas filling regulations, LPG cylinders must be verified before filling to verify their product serial number. This helps establish a comprehensive management record for LPG cylinders and prevent the use of uninspected or discarded LPG cylinders. With the rapid development of the Internet of Things (IoT), more and more products are leveraging IoT technology for information management. QR codes are used to store rich information. By attaching QR codes to LPG cylinders, they can be attached to the cylinders themselves. However, attaching QR codes to the cylinders using metal rivets or other methods can compromise the quality of the cylinders, making them unsafe. Therefore, QR codes are attached to the cylinder valves. This allows verification and identification of LPG cylinders by scanning the QR code on the cylinder valves, quickly accessing the cylinder's management record. This simplifies verification and improves efficiency. However, due to the single orientation of the QR code, the identification direction of the liquefied gas cylinder valve is limited. Moreover, if the QR code is slightly far away from the scanning device, slightly tilted, or at an unfavorable angle, the scanning device will have difficulty clearly identifying the QR code. This may require multiple scans, thus affecting the efficiency of verifying the cylinder product. In addition, since the QR code can be easily replaced, the QR code on a qualified liquefied gas cylinder valve may be moved to an uninspected or scrapped liquefied gas cylinder for the purpose of saving liquefied petroleum gas costs. Therefore, relying on the QR code as the identification information of the liquefied gas cylinder will make it difficult to prevent the use of uninspected or scrapped liquefied gas cylinders. Therefore, there is room for improvement in the identification of liquefied gas cylinder valves and the anti-dismantling mechanism of the identification mark to simplify the difficulty of identifying liquefied gas cylinders and thus prevent the use of uninspected or scrapped liquefied gas cylinders. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the utility model provides a liquefied gas cylinder valve that can read information of the liquefied gas cylinder from multiple directions and prevent unauthorized disassembly of the liquefied gas cylinder, thereby overcoming the defects in the prior art.

[0005] The technical solution adopted by the utility model is as follows: a liquefied gas cylinder valve, comprising a valve body and a valve stem for controlling the degree of opening and closing of a valve body channel, wherein a square sleeve is fixedly provided on the valve stem, the square sleeve is located above the valve body, a hand wheel is mounted on the square sleeve, a storage groove is provided on the hand wheel from the top end to the bottom end of the hand wheel, a fixing plate is provided in the storage groove, and a battery, a label and a push button switch are respectively provided on the fixing plate; the label comprises a chip and an antenna connected to the chip, a reset end of the chip of the label is connected to the battery via the push button switch, and a normally closed contact of the push button switch is connected to the power supply end of the battery; a cover plate is provided on the top of the storage groove, and the cover plate is pressed onto the push cap of the push button switch.

[0006] The length of the square sleeve is not less than the diameter of the valve stem. A square hole is provided at the bottom of the handwheel, which is sleeved on the square sleeve. The square hole is connected to the storage slot. The cross-sectional shape of the square hole matches the external cross-sectional shape of the square sleeve. A spring is provided under the handwheel, which is movably sleeved on the valve stem. The two ends of the spring are in contact with the valve body and the handwheel respectively.

[0007] A nut is provided in the storage groove, and the nut is threadedly sleeved on the valve stem. The distance between the nut and the square sleeve is not less than the height of the square hole, and the outer diameter of the nut is not less than the diameter of the square hole.

[0008] A limit block is provided on the top of the storage slot, which is installed on the inner wall of the handwheel. A limit slot is provided at the edge of the cover plate, the diameter of the limit slot is not less than the length of the limit block, and a fixing block is provided on the top surface of the cover plate.

[0009] A first gasket is provided below the cover plate, and the cover plate is clamped in the storage groove by the limiting block and the first gasket. The groove diameter of the limiting groove gradually decreases along the direction close to the valve body.

[0010] The storage groove adopts a stepped circular groove structure, the groove diameter of the storage groove away from the valve body is not less than the groove diameter of the storage groove close to the valve body, and a plurality of brackets are evenly arranged in the middle and upper part of the storage groove along the circumferential direction of the storage groove. The plurality of brackets are all integrated with the handwheel. The bracket is located above the valve stem, and the fixed plate is installed on the bracket.

[0011] A second washer is provided between the fixing plate and the bracket, and the second washer is clamped between the fixing plate and the bracket.

[0012] The beneficial effects of the present invention are as follows: first, the present invention connects a tag with a reading device to realize multi-directional reading of the tag information, thereby simplifying the operation of identifying a liquefied gas cylinder. Furthermore, the present invention uses a battery and a button switch to control the reset circuit of the tag chip, so that the tag chip can be restored to the circuit device of the initial state to clear the information on the tag chip; the cover is pressed onto the button cap of the button switch, so that when the cover is opened, the spring force of the button switch causes the switch blade of the button switch to contact the normally closed contact of the button switch, so that the battery is electrically connected to the reset end of the tag chip, thereby resetting the tag chip to clear the information on the tag chip, thereby preventing the unauthorized disassembly and replacement of the tag, and further preventing the use of uninspected or scrapped liquefied gas cylinders.

[0013] Secondly, the utility model uses a square hole at the bottom of the handwheel to rotate the square sleeve and the valve stem, thereby controlling the degree of opening and closing of the valve body channel. A spring is provided between the handwheel and the valve body to prevent the valve stem from rotating due to accidental contact with the handwheel, thereby preventing leakage caused by misoperation. Based on this, in order to control the rotation of the valve stem, it is necessary to press the handwheel toward the spring, so that the square hole fits into the square sleeve, and then the handwheel is turned to rotate the square sleeve and the valve stem. In addition, the utility model uses a nut provided in the storage slot to restrict the handwheel to prevent the handwheel from falling off the valve stem.

[0014] Thirdly, the present invention uses a limit block provided at the top of the storage slot and a limit slot provided at the edge of the cover plate, and passes through the limit block through the limit slot, so that the cover plate is located below the limit block and inside the storage slot, and then uses the fixed block to drive the cover plate to rotate, so that the top surface of the cover plate contacts the limit block, thereby assembling the cover plate inside the handwheel. In addition, the present invention uses a first gasket provided below the cover plate, so that the cover plate is clamped in the storage slot through the limit block and the first gasket, so that the cover plate is firmly assembled in the storage slot. By fitting the limit slot onto the limit block and rotating the fixed block, the inclined surface of the limit slot drives the height of the cover plate to gradually decrease, so that the cover plate is pressed against the first gasket, thereby facilitating the assembly of the cover plate inside the handwheel.

[0015] In addition, the present invention fixes the fixing plate by arranging a bracket in the storage groove, and the bracket is located above the valve stem, thereby preventing the valve stem from contacting the fixing plate. A second gasket is arranged between the fixing plate and the bracket to facilitate the fixing plate to be firmly assembled in the storage groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the present utility model.

[0017] Figure 2 This is an explosion diagram of the utility model.

[0018] Figure 3 This is a first cross-sectional schematic diagram of the present invention.

[0019] Figure 4 for Figure 3 Enlarged schematic diagram of point A in the middle.

[0020] Figure 5 This is a second cross-sectional schematic diagram of the present invention.

[0021] Figure 6 This is a circuit connection diagram of the battery and tag in this utility model. DETAILED DESCRIPTION

[0022] like Figures 1 to 6As shown, a liquefied gas cylinder valve includes a valve body 1 and a valve stem 2 for controlling the degree of opening and closing of the valve body 1 channel. A square sleeve 3 is fixedly provided on the valve stem 2, and the square sleeve 3 is located above the valve body 1. A handwheel 4 is mounted on the square sleeve 3. A storage groove 5 is provided on the handwheel 4 from the top to the bottom of the handwheel 4. A fixing plate 6 is provided in the storage groove 5, and a battery 7, a label 8 and a button switch 9 are respectively provided on the fixing plate 6; the label 8 includes a chip and an antenna connected to the chip, the reset end of the chip of the label 8 is connected to the battery 7 through the button switch 9, and the normally closed contact of the button switch 9 is connected to the power supply end of the battery 7; a cover plate 10 is provided on the top of the storage groove 5, and the cover plate 10 is pressed on the push cap of the button switch 9. Through the antenna of the tag 8, the reading device and the chip of the tag 8 are connected to realize multi-directional reading of the tag 8 information, thereby simplifying the difficulty of reading and identifying the liquefied gas cylinder; the button switch 9 includes a knife, a button cap that drives the knife to move, a spring that controls the reset of the knife, a normally closed contact and a normally open contact. One side of the knife contacts the chip of the tag 8, and the other side of the knife contacts the normally closed contact or the normally open contact; for this reason, when no external force is applied, the spring drives the knife to contact the normally closed contact; on the contrary, when an external force is applied, the knife contacts the normally open contact; it can be seen that the cover plate 10 presses On the push cap of the button switch 9, the knife of the button switch 9 contacts the normally open contact of the button switch 9, so that the battery 7 is disconnected from the chip of the tag 8; if the cover 10 is removed, the knife of the button switch 9, under the action of the spring of the button switch 9, contacts the normally closed contact of the button switch 9, so that the battery 7 is electrically connected to the chip of the tag 8, thereby resetting the chip of the tag 8 to clear the information in the tag 8, so as to prevent the unauthorized disassembly and replacement of the tag 8, and further prevent the use of uninspected and scrapped liquefied gas cylinders; the chip of the tag 8 adopts an RFID chip with a reset function.

[0023] The length of the square sleeve 3 is not less than the diameter of the valve stem 2. A square hole 11 is provided at the bottom of the handwheel 4. The square hole 11 is mounted on the square sleeve 3 so that by turning the handwheel 4, the square sleeve 3 and the valve stem 2 can be driven to rotate, so as to control the degree of opening and closing of the valve body 1 channel. The square hole 11 is connected to the storage slot 5. The cross-sectional shape of the square hole 11 matches the external cross-sectional shape of the square sleeve 3. A spring 12 is provided below the handwheel 4. The spring 12 is movably mounted on the valve stem 2. The two ends of the spring 12 are respectively connected to the valve body 1 and the handwheel 4. contact; the hand wheel 4 is driven upward by the spring 12 to make the square hole 11 fall off from the square sleeve 3. At this time, when the hand wheel 4 is turned, the square sleeve 3 and the valve stem 2 no longer rotate, so as to avoid accidental contact with the hand wheel 4 causing the valve stem 2 to rotate, thereby preventing leakage caused by misoperation; based on this, in order to control the rotation of the valve stem 2, it is necessary to press the hand wheel 4 toward the spring to make the square hole 11 fit inside the square sleeve 3, and then turn the hand wheel 4 to drive the square sleeve 3 and the valve stem 2 to rotate, so as to control the opening and closing degree of the valve body 1 channel.

[0024] In this embodiment, a nut 13 is provided in the storage groove 5, and the nut 13 is threadedly mounted on the valve stem 2. The distance between the nut 13 and the square sleeve 3 is not less than the height of the square hole 11, and the outer diameter of the nut 13 is not less than the diameter of the square hole 11, thereby restricting the handwheel 4 and preventing the handwheel 4 from falling off the valve stem 2.

[0025] It should be noted that a limiting block 14 is provided on the top of the storage slot 5, and the limiting block 14 is installed on the inner wall of the handwheel 4. A limiting slot 15 is provided at the edge of the cover plate 10, and the groove diameter of the limiting slot 15 is not less than the length of the limiting block 14. A fixing block 16 is provided on the top surface of the cover plate 10, and the limiting block 14 is passed through the limiting slot 15 so that the cover plate 10 is located below the limiting block 14 and the cover plate 10 is located in the storage slot 5, and then the fixing block 16 is rotated so that the top surface of the cover plate 10 contacts the limiting block 14, so that the cover plate 10 is assembled in the handwheel 4.

[0026] Please refer again Figure 2 and 4 A first gasket 17 is provided under the cover plate 10. The cover plate 10 is clamped in the storage groove 5 by the limit block 14 and the first gasket 17, so that the cover plate 10 is firmly assembled in the storage groove 5. The groove diameter of the limit groove 15 gradually decreases in the direction close to the valve body 1. By fitting the limit groove 15 on the limit block 14 and rotating the fixing block 16, the inclined surface of the limit groove 15 drives the height of the cover plate 10 to gradually decrease, so that the cover plate 10 is pressed against the first gasket 17, so as to facilitate the assembly of the cover plate 10 in the handwheel 4.

[0027] Please refer again Figures 3 to 5The storage groove 5 adopts a stepped circular groove structure. The groove diameter of the storage groove 5 away from the valve body 1 is not less than the groove diameter of the storage groove 5 close to the valve body 1. A plurality of brackets 18 are provided in the storage groove 5. The plurality of brackets 18 are evenly arranged in the middle and upper part of the storage groove 5 along the circumferential direction of the storage groove 5. The plurality of brackets 18 are all integrated with the handwheel 4. The bracket 18 is located above the valve stem 2. The fixed plate 6 is installed on the bracket 18 to fix the fixed plate 6 to prevent the valve stem 2 from contacting the fixed plate 6.

[0028] It should be noted that a second washer 19 is provided between the fixing plate 6 and the bracket 18 . The second washer 19 is clamped between the fixing plate 6 and the bracket 18 , so that the fixing plate 6 is firmly assembled in the storage slot 5 .

[0029] The assembly method of this product is as follows: Figures 1 to 6 As shown, first, the valve body 1 and valve stem 2 are assembled so that the valve stem 2 can control the opening and closing degree of the valve body 1 channel. The valve stem 2 and valve body 1 are tested to ensure that the valve stem 2 can control the opening and closing degree of the valve body 1 channel and prevent leakage in the valve body 1, so that the valve body 1 and valve stem 2 meet the requirements of qualified products. Then, the bottom of the valve body 1 is installed on the open end of a liquefied gas cylinder that has passed the inspection. By supplying test gas to the inlet and outlet of the valve body 1, the test gas is delivered into the liquefied gas cylinder. The liquefied gas cylinder assembled with the valve body 1 and valve stem 2 is inspected according to the requirements of the new national standard GB / T 5842-2022 "Liquefied Petroleum Gas Cylinders". After the liquefied gas cylinder passes the inspection, the spring 12 and handwheel 4 are sequentially installed on the valve stem 2. At this time, the handwheel 4 is located above the square sleeve 3 due to the action of the spring 12. The nut 13 is then screwed and assembled onto the valve stem 2. After assembling the nut 13, verify whether the handwheel 4 can drive the valve stem 2 to rotate. Press and turn the handwheel 4 so that the square hole 11 fits over the square sleeve 3. Rotate the handwheel 4 and observe whether the valve stem 2 rotates. If the valve stem 2 can rotate with the handwheel 4, when the square hole 11 fits over the square sleeve 3, rotate the handwheel 4 to drive the valve stem 2 to control the passage of the valve body 1 to be closed. Install the battery 7, label 8, and push button switch 9 onto the fixing plate 6 in sequence. Then, install the second gasket 19 and the fixing plate 6 onto the bracket 18 respectively. Then, place the first gasket 17 and cover plate 10 into the storage slot 5 so that the limit slot 15 fits over the limit block 14. By rotating the fixing block 16, the cover plate 10 is pressed against the first gasket 17. At the same time, the cover plate 10 is buckled onto the push cap of the push button switch 9, disconnecting the battery 7 and label 8. Use the writing device to connect to the label 8 to record the identity information into the label 8. Finally, use the reading device to connect the tag 8 to check whether the information is consistent with the writing device, and inspect the liquefied gas cylinder and this product again to ensure that they meet the qualification requirements after assembly.

[0030] This embodiment utilizes a tag 8 connected to a reader to achieve multi-directional reading of the tag 8 information, simplifying the identification of liquefied gas cylinders. Furthermore, this embodiment utilizes a battery 7 and a push button switch 9 to control the reset circuit of the tag 8 chip, allowing the tag 8 chip to return to its initial state and clear the information on the tag 8 chip. A cover 10 is pressed against the push cap of the push button switch 9. When the cover 10 is opened, the spring force of the push button switch 9 causes the blade of the push button switch 9 to contact the normally closed contact of the push button switch 9, electrically connecting the battery 7 to the reset terminal of the tag 8 chip, thereby resetting the tag 8 chip and clearing the information on the tag 8 chip. This prevents unauthorized removal or replacement of the tag 8, thereby preventing the use of uninspected or discarded liquefied gas cylinders.

[0031] The embodiments described above are only preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A liquefied gas cylinder valve, comprising a valve body (1) and a valve stem (2) for controlling the opening and closing degree of a channel of the valve body (1), characterized in that: A square sleeve (3) is fixedly arranged on the valve stem (2), the square sleeve (3) is located above the valve body (1), a hand wheel (4) is mounted on the square sleeve (3), a storage groove (5) is provided on the hand wheel (4) from the top end of the hand wheel (4) to the bottom end of the hand wheel (4), a fixing plate (6) is arranged in the storage groove (5), and a battery (7), a label (8) and a button switch (9) are respectively arranged on the fixing plate (6); The tag (8) comprises a chip and an antenna connected to the chip; the reset end of the chip of the tag (8) is connected to the battery (7) via a button switch (9); the normally closed contact of the button switch (9) is connected to the power supply end of the battery (7); a cover plate (10) is provided on the top of the storage slot (5); the cover plate (10) is pressed onto the button cap of the button switch (9).

2. The liquefied gas cylinder valve according to claim 1, characterized in that: The length of the square sleeve (3) is not less than the diameter of the valve stem (2). A square hole (11) is provided at the bottom of the hand wheel (4). The square hole (11) is sleeved on the square sleeve (3). The square hole (11) is connected to the storage groove (5). The cross-sectional shape of the square hole (11) matches the external cross-sectional shape of the square sleeve (3). A spring (12) is provided below the hand wheel (4). The spring (12) is movably sleeved on the valve stem (2). Two ends of the spring (12) are in contact with the valve body (1) and the hand wheel (4) respectively.

3. The liquefied gas cylinder valve according to claim 2, characterized in that: A nut (13) is arranged in the storage groove (5), and the nut (13) is threadedly sleeved on the valve stem (2). The distance between the nut (13) and the square sleeve (3) is not less than the height of the square hole (11), and the outer diameter of the nut (13) is not less than the diameter of the square hole (11).

4. The liquefied gas cylinder valve according to claim 1, characterized in that: A limit block (14) is arranged at the top of the storage slot (5), the limit block (14) is mounted on the inner wall of the hand wheel (4), a limit slot (15) is provided at the edge of the cover plate (10), the slot diameter of the limit slot (15) is not less than the length of the limit block (14), and a fixing block (16) is arranged on the top surface of the cover plate (10).

5. The liquefied gas cylinder valve according to claim 4, characterized in that: A first gasket (17) is provided below the cover plate (10), and the cover plate (10) is clamped in the storage groove (5) by means of the limiting block (14) and the first gasket (17), and the groove diameter of the limiting groove (15) gradually decreases in a direction approaching the valve body (1).

6. The liquefied gas cylinder valve according to claim 1, characterized in that: The storage groove (5) adopts a stepped circular groove structure, the groove diameter of the storage groove (5) at one end away from the valve body (1) is not less than the groove diameter of the storage groove (5) at one end close to the valve body (1), a plurality of brackets (18) are arranged in the storage groove (5), the plurality of brackets (18) are evenly arranged in the middle and upper part of the storage groove (5) along the circumferential direction of the storage groove (5), the plurality of brackets (18) are all integrally formed with the hand wheel (4), the brackets (18) are located above the valve stem (2), and the fixing plate (6) is mounted on the brackets (18).

7. The liquefied gas cylinder valve according to claim 1, characterized in that: A second gasket (19) is provided between the fixing plate (6) and the bracket (18), and the second gasket (19) is clamped between the fixing plate (6) and the bracket (18).

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