A fully automatic integrated self-closing device for gas pipelines

Abstract

This invention discloses a fully automatic integrated self-closing device for gas pipelines, relating to the field of gas valve technology. It includes a housing with a battery cover and a valve body cover fixedly connected to its top. A battery outer compartment is fixedly installed inside the housing, with the battery cover directly above it. A valve body outer sleeve is fixedly installed inside the housing, with the valve body cover directly above it. A valve block is fixedly installed inside the valve body outer sleeve, with an air inlet at its bottom. When the self-closing device needs to be closed, a micro-motor controls the valve core structure to move downwards via a transmission assembly and a lead screw. The valve core structure drives the first sealing sleeve downwards, causing its lower surface to tightly fit against the bottom of the valve block. The first sealing sleeve seals the air inlet at the bottom of the valve block, achieving a sealed closure of the gas passage. The entire transmission process is smooth and precise, with reliable structural connections, ensuring stable operation of the device.

Description

Technical Field

[0001] This invention relates to the field of gas valve technology, and in particular to a fully automatic integrated self-closing device for gas pipelines. Background Technology

[0002] Natural gas, as an important form of energy supply, is widely used in various fields such as residential life and industrial production. Gas pipeline systems, like the energy arteries of a city, continuously supply power for economic and social development. However, the use of natural gas faces numerous safety hazards. Due to uncontrollable factors such as pipeline aging, human error, and natural disasters, gas leaks occur frequently, posing a serious threat to people's lives and property and social stability. Faced with this severe safety challenge of gas pipeline leaks, traditional gas safety devices have revealed many limitations in their response.

[0003] For example, Chinese patent document CN116085503A discloses a piped gas self-closing device, which describes "a device body having adjacent gas passages, a pressure chamber, and an assembly hole, wherein an automatic valve is configured in the gas passage, a control mechanism is provided on the opposite side of the pressure chamber, and a reset mechanism is provided in the assembly hole extending outside the device body." When the gas pressure is within a preset pressure range, the automatic valve is kept in the open position by the control mechanism, keeping the gas passage unobstructed. When the gas pressure is lower or higher than the preset pressure, the control mechanism releases the automatic valve, closing it and blocking the gas passage, while simultaneously interlocking with the control mechanism and abutting against the reset mechanism. After confirming that the gas pressure has returned to normal, the reset mechanism is manually operated, and the automatic valve returns to the open position, restoring gas flow.

[0004] However, current technologies still have the following shortcomings: While existing piped gas automatic shut-off devices can automatically close and cut off the gas supply when there are abnormal pressures such as overpressure or overflow in the gas pipeline, or when the hose is damaged or detached causing a dangerous underpressure situation, these devices have limitations. They cannot trigger the valve to close in cases of minor gas leaks, and they cannot be linked with gas detection devices such as MEMS pressure sensors. When the detection device detects a gas leak, it cannot send an electrical signal to the automatic shut-off valve, thus failing to drive the valve to close automatically. If a small gas leak persists for a long time, its concentration will slowly increase, easily leading to safety accidents. Even if a detection device is installed in the user's home, automatic gas supply cannot be cut off when unattended, and safety risks still exist. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a fully automatic integrated self-closing device for gas pipelines.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A fully automatic integrated self-closing device for gas pipelines includes a housing, a battery cover and a valve body cover fixedly connected to the top of the housing, a battery outer compartment fixedly installed inside the housing, the battery cover being located directly above the battery outer compartment, and a valve body outer sleeve fixedly installed inside the housing, the valve body cover being located directly above the valve body outer sleeve. A valve block is fixedly installed inside the valve body sleeve. An air inlet is provided at the bottom of the valve block, and an exhaust port is provided on the side wall of the valve block. A lower motor cover is fixedly connected to the upper part of the valve block by screws. A higher motor cover is fixedly connected to the top of the lower motor cover. A micro motor is fixedly installed inside the lower motor cover, and a transmission assembly is fixedly installed inside the lower motor cover. The output end of the micro motor is fixedly connected to the input end of the transmission assembly. A lead screw is driven to the output end of the transmission assembly. A valve core structure is threaded to the bottom of the lead screw. A first sealing sleeve is fixedly fitted to the bottom of the valve core structure. The first sealing sleeve corresponds to the air inlet. An mounting component is fixedly installed inside the valve block. The transmission assembly is located directly above the mounting component, and the valve core structure is slidably fitted with the mounting component.

[0007] Preferably, a storage battery is fixedly installed inside the battery compartment, a mounting column is fixedly connected to the outer wall of the battery compartment, and a switch button is fixedly installed on the outer wall of the outer casing.

[0008] Preferably, the valve body outer sleeve includes a mounting sleeve, the top of which is fixedly connected to a fixing cover by screws, the top of which is fixedly connected to an exhaust pipe, the outer wall of the valve body cover plate has a through hole matching the exhaust pipe, the exhaust pipe passes through the through hole in the outer wall of the valve body cover plate and extends to the outside of the valve body cover plate, the bottom of the mounting sleeve is fixedly connected to an air inlet pipe, the bottom of the outer shell has a through hole matching the air inlet pipe, the air inlet pipe passes through the through hole in the bottom of the outer shell and extends to the outside of the outer shell.

[0009] Preferably, a third sealing ring is fitted onto the top of the mounting sleeve, and the third sealing ring is located at the connection between the mounting sleeve and the fixing cover.

[0010] Preferably, the transmission assembly includes a first gear, the output end of the micro motor is fixedly connected to the first gear, the first gear meshes with a second gear, the upper surface of the second gear is rotatably connected to the inner wall of the motor lower cover, the bottom of the second gear is fixedly connected to a third gear, the lower surface of the third gear is rotatably connected to a mounting component, the third gear meshes with a fourth gear, the upper surface of the fourth gear is fixedly connected to a first protrusion, the lead screw is sleeved with the first protrusion, the top of the lead screw is fixedly connected to a turntable, the turntable is located on the upper surface of the fourth gear, the upper surface of the turntable is rotatably connected to the inner wall of the motor lower cover, and the outer wall of the turntable is fixedly connected to a second protrusion corresponding to the first protrusion.

[0011] Preferably, a second sealing sleeve is fixedly sleeved on the lower outer wall of the mounting component, the valve core structure includes an internal threaded sleeve, the internal threaded sleeve is threadedly connected to the lead screw, the internal threaded sleeve is slidably sleeved with the second sealing sleeve, a sealing block is fixedly connected to the bottom of the internal threaded sleeve, and a groove matching the sealing block is opened on the upper surface of the first sealing sleeve, and the first sealing sleeve is sleeved with the sealing block through the groove.

[0012] Preferably, a limiting strip is fixedly connected to the upper surface of the sealing block. The limiting strip is an inverted L-shape. A limiting groove matching the limiting strip is opened on the inner wall of the valve block. The limiting strip is slidably connected to the valve block through the limiting groove.

[0013] Preferably, the upper surface of the first sealing sleeve has a sleeve hole that matches the limiting strip, and the limiting strip is sleeved with the first sealing sleeve through the sleeve hole.

[0014] Preferably, a first groove is formed on the bottom outer wall of the valve block, and a second sealing ring is sleeved on the valve block in the first groove, with the outer wall of the second sealing ring in contact with the inner wall of the mounting sleeve.

[0015] Preferably, the bottom outer wall of the valve block is provided with a second wiring hole, the valve block is provided with a second groove at the second wiring hole, the valve block is fitted with a first sealing ring at the second groove, the outer wall of the first sealing ring is in contact with the inner wall of the mounting sleeve, and the outer wall of the motor cover is provided with a first wiring hole.

[0016] The beneficial effects of this invention are as follows: 1. In this invention, MEMS pressure sensors can be installed on both ends of the gas pipelines connected to the exhaust pipe and the intake pipe. The MEMS pressure sensors are used to collect the real-time pressure of the gas pipelines. The MEMS pressure sensors are electrically connected to the main control unit. When the MEMS pressure sensor quickly detects extremely subtle abnormal pressure changes in the gas system, it indicates abnormal flow or gas leakage. The MEMS pressure sensor transmits the pressure signal to the main control unit, and the main control unit controls the micro motor to automatically close the self-closing device, effectively reducing the possibility of accidents.

[0017] 2. In this invention, all components are integrated into the shell. The shell is a cylindrical sealed shell with a battery cover and a valve cover fixedly connected to the top. The shell is sealed by bolts to prevent the internal components from being affected by external moisture.

[0018] 3. In this invention, the exhaust pipe and the intake pipe are respectively connected to the gas passage. When the self-closing device needs to be closed, the micro motor controls the valve core structure to move downward through the transmission component and the lead screw. The valve core structure drives the first sealing sleeve to move downward, so that the lower surface of the first sealing sleeve is tightly fitted with the bottom of the valve block. The first sealing sleeve blocks the air inlet at the bottom of the valve block, thereby achieving the sealing and closure of the gas passage. The entire transmission process is smooth and precise, the structural connection is reliable, and the stable operation of the device is guaranteed.

[0019] 4. In this invention, the first sealing sleeve is sleeved with the sealing block through a groove, which ensures that the first sealing sleeve will not fall off. Through the cooperation of the limiting groove and the limiting strip, it can be ensured that when the screw rotates, the valve core structure will not rotate with the screw, and the valve core structure can move stably in the vertical direction. Furthermore, through the design of the limiting strip, when the inner threaded sleeve moves upward and approaches the top of the screw, the limiting strip first contacts the second sealing sleeve on the outer wall of the mounting part. The limiting strip plays a limiting role and can effectively prevent the top of the inner threaded sleeve from contacting the top of the screw thread and getting stuck.

[0020] 5. In this invention, the limiting strip is sleeved with the first sealing sleeve through the sleeve hole, which can prevent the first sealing sleeve from being displaced from the sealing block under external force, thereby further improving the stability of the connection between the first sealing sleeve and the valve core structure. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a fully automatic integrated self-closing device for gas pipelines according to the present invention.

[0022] Figure 2 This is a top view of a fully automatic integrated self-closing device for gas pipelines according to the present invention.

[0023] Figure 3This invention relates to a fully automatic integrated self-closing device for gas pipelines. Figure 2 Cross-sectional view of AA.

[0024] Figure 4 This is a schematic diagram of the valve body sleeve of a fully automatic integrated self-closing device for gas pipelines according to the present invention.

[0025] Figure 5 This is a front view of the valve body casing of a fully automatic integrated self-closing device for gas pipelines according to the present invention.

[0026] Figure 6 This invention relates to a fully automatic integrated self-closing device for gas pipelines. Figure 5 Cross-sectional view of BB.

[0027] Figure 7 This is an exploded view of the valve body jacket, motor top cover, motor bottom cover, and valve block of a fully automatic integrated self-closing device for gas pipelines according to the present invention.

[0028] Figure 8 This is a schematic diagram of the structure of the motor top cover, motor bottom cover, and valve block of a fully automatic integrated self-closing device for gas pipelines according to the present invention.

[0029] Figure 9 This is an exploded view of the valve block, transmission assembly, and lead screw of a fully automatic integrated self-closing device for gas pipelines according to the present invention.

[0030] Figure 10 This is a schematic diagram of the transmission component of a fully automatic integrated self-closing device for gas pipelines according to the present invention.

[0031] Figure 11 This is a schematic diagram of the valve core structure and the first sealing sleeve of a fully automatic integrated self-closing device for gas pipelines according to the present invention.

[0032] Figure 12 This is an exploded view of the valve core structure and the first sealing sleeve of a fully automatic integrated self-closing device for gas pipelines according to the present invention.

[0033] Figure 13 This is a schematic diagram of gas flow in a fully automatic integrated self-closing device for gas pipelines according to the present invention.

[0034] Labels in the diagram: 1. Outer casing; 2. Battery cover; 3. Valve body cover; 4. Valve body outer sleeve; 401. Mounting sleeve; 402. Fixing cover; 403. Exhaust pipe; 404. Intake pipe; 5. Motor top cover; 501. First wiring hole; 6. Motor bottom cover; 7. Valve block; 701. Intake hole; 702. Exhaust hole; 703. Second wiring hole; 704. First groove; 705. Second groove; 706. Limiting groove; 8. Transmission assembly; 801. First gear; 802. Second gear; 803. Third gear 804. Wheel; 805. Fourth gear; 806. First protrusion; 9. Lead screw; 907. Turntable; 908. Second protrusion; 10. Valve core structure; 1008. Internal threaded sleeve; 1009. Sealing block; 10000. Limiting strip; 11. First sealing sleeve; 1101. Slot; 1102. Sleeve hole; 12. Mounting part; 13. Second sealing sleeve; 14. First sealing ring; 15. Second sealing ring; 16. Battery outer compartment; 1601. Mounting post; 17. Switch button; 18. Micro motor; 19. Third sealing ring. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] As attached Figure 1 To be continued Figure 13 As shown: A fully automatic integrated gas pipeline self-closing device includes an outer shell 1. A battery cover plate 2 and a valve body cover plate 3 are fixedly connected to the top of the outer shell 1. A battery outer compartment 16 is fixedly installed inside the outer shell 1. The battery cover plate 2 is located directly above the battery outer compartment 16. A valve body outer sleeve 4 is fixedly installed inside the outer shell 1. The valve body cover plate 3 is located directly above the valve body outer sleeve 4. A valve block 7 is fixedly installed inside the valve body outer sleeve 4. An air inlet 701 is opened at the bottom of the valve block 7, and an exhaust hole 702 is opened on the side wall of the valve block 7. A motor lower cover 6 is fixedly connected to the upper part of the valve block 7 by screws. A motor upper cover 5 is fixedly connected to the top of the motor lower cover 6. A micro motor 18 is fixedly installed inside the motor lower cover 6. A transmission assembly 8 is fixedly installed inside the motor lower cover 6. The output end of the micro motor 18 is fixedly connected to the input end of the transmission assembly 8. A lead screw 9 is drivenly connected to the output end of the transmission assembly 8. A valve core structure 10 is threadedly connected to the bottom of the lead screw 9. A first sealing sleeve 11 is fixedly sleeved at the bottom of the valve core structure 10. The first sealing sleeve 11 corresponds to the air inlet 701. An installation part 12 is fixedly installed inside the valve block 7. The transmission assembly 8 is located directly above the installation part 12. The valve core structure 10 and the installation part 12 are slidably sleeved together. As attached Figure 3 To be continued Figure 4As shown, the valve body outer sleeve 4 includes a mounting sleeve 401. A fixing cover 402 is fixedly connected to the top of the mounting sleeve 401 by screws. An exhaust pipe 403 is fixedly connected to the top of the fixing cover 402. A through hole matching the exhaust pipe 403 is opened on the outer wall of the valve body cover plate 3. The exhaust pipe 403 passes through the through hole on the outer wall of the valve body cover plate 3 and extends to the outside of the valve body cover plate 3. An air inlet pipe 404 is fixedly connected to the bottom of the mounting sleeve 401. A through hole matching the air inlet pipe 404 is opened on the bottom of the outer shell 1. The air inlet pipe 404 passes through the through hole at the bottom of the outer shell 1 and extends to the outside of the outer shell 1.

[0037] In the above technical solution, the exhaust pipe 403 and the intake pipe 404 are respectively connected to the gas passage. When it is necessary to close the self-closing device, the micro motor 18 controls the valve core structure 10 to move downward through the transmission component 8 and the lead screw 9. The valve core structure 10 drives the first sealing sleeve 11 to move downward, so that the lower surface of the first sealing sleeve 11 is tightly attached to the bottom of the valve block 7. The first sealing sleeve 11 blocks the air inlet 701 at the bottom of the valve block 7, thereby achieving the sealing and closure of the gas passage. When the self-closing device needs to be opened, the micro motor 18 controls the valve core structure 10 to move upward through the transmission component 8 and the lead screw 9. The valve core structure 10 drives the first sealing sleeve 11 to move upward, so that the lower surface of the first sealing sleeve 11 separates from the bottom of the valve block 7. At this time, the air inlet 701 and the exhaust port 702 are connected. At this time, the gas enters the valve block 7 through the air inlet pipe 404 and the air inlet 701, and is discharged into the mounting sleeve 401 through the exhaust port 702, and then discharged through the exhaust pipe 403, realizing the conduction of the gas passage. The entire transmission process is smooth and precise, the structural connection is reliable, and the stable operation of the device is guaranteed.

[0038] As attached Figure 1 To be continued Figure 3 As shown, a storage battery is fixedly installed inside the battery compartment 16, and a mounting post 1601 is fixedly connected to the outer wall of the battery compartment 16. The end of the mounting post 1601 is provided with an internal thread hole, and a switch button 17 is fixedly installed on the outer wall of the outer casing 1.

[0039] In the above technical solution, the main control unit is installed by mounting post 1601 and screws. The main control unit is not shown in the figure. The main control unit is an STM32f103 controller. The micro motor 18, switch button 17 and battery are all electrically connected to the main control unit. The battery is the working power source for the micro motor 18 in the self-closing device.

[0040] It is worth mentioning that MEMS pressure sensors can be installed on the gas pipelines connected to both ends of the exhaust pipe 403 and the intake pipe 404. The MEMS pressure sensors are used to collect the real-time pressure of the gas pipelines. The MEMS pressure sensors are electrically connected to the main control unit. When the MEMS pressure sensor quickly detects extremely subtle abnormal pressure changes in the gas system, it indicates abnormal flow or gas leakage. The main control unit controls the micro motor 18 to automatically close the self-closing device, effectively reducing the possibility of accidents.

[0041] As attached Figure 7 As shown, a third sealing ring 19 is fitted onto the top of the mounting sleeve 401, and the third sealing ring 19 is located at the connection between the mounting sleeve 401 and the fixing cover 402.

[0042] As attached Figure 9 To be continued Figure 10 As shown, the transmission assembly 8 includes a first gear 801, the output end of the micro motor 18 is fixedly connected to the first gear 801, the first gear 801 meshes with a second gear 802, the upper surface of the second gear 802 is rotatably connected to the inner wall of the motor lower cover 6, the bottom of the second gear 802 is fixedly connected to a third gear 803, the lower surface of the third gear 803 is rotatably connected to the mounting part 12, the third gear 803 meshes with a fourth gear 804, the upper surface of the fourth gear 804 is fixedly connected to a first protrusion 805, the lead screw 9 is sleeved with the first protrusion 805, the top of the lead screw 9 is fixedly connected to a turntable 901, the turntable 901 is located on the upper surface of the fourth gear 804, the upper surface of the turntable 901 is rotatably connected to the inner wall of the motor lower cover 6, and the outer wall of the turntable 901 is fixedly connected to a second protrusion 902 corresponding to the first protrusion 805.

[0043] In the above technical solution, the micro motor 18 is started by receiving the control signal from the main control unit. The micro motor 18 drives the first gear 801 to rotate. The first gear 801 drives the fourth gear 804 to rotate through the second gear 802 and the third gear 803. The fourth gear 804 drives the first protrusion 805 on the upper surface to be fixed. The first protrusion 805 contacts the second protrusion 902. The first protrusion 805 drives the turntable 901 to rotate through the second protrusion 902. The turntable 901 drives the lead screw 9 to rotate.

[0044] As attached Figure 10 To be continued Figure 12As shown, a second sealing sleeve 13 is fixedly sleeved on the lower outer wall of the mounting component 12. The valve core structure 10 includes an internal threaded sleeve 1001, which is threadedly connected to the lead screw 9. The internal threaded sleeve 1001 is slidably sleeved with the second sealing sleeve 13. A sealing block 1002 is fixedly connected to the bottom of the internal threaded sleeve 1001. A groove 1101 matching the sealing block 1002 is opened on the upper surface of the first sealing sleeve 11. The first sealing sleeve 11 is sleeved with the sealing block 1002 through the groove 1101.

[0045] In the above technical solution, the lead screw 9 is threadedly connected to the internal threaded sleeve 1001. The rotation of the lead screw 9 drives the internal threaded sleeve 1001 to move vertically. The internal threaded sleeve 1001 drives the first sealing sleeve 11 to move vertically through the sealing block 1002. The first sealing sleeve 11 is connected to the sealing block 1002 through the slot 1101, which can ensure that the first sealing sleeve 11 will not fall off.

[0046] As attached Figure 11 To be continued Figure 12 As shown, a limiting strip 1003 is fixedly connected to the upper surface of the sealing block 1002. The limiting strip 1003 is an inverted L-shape. The inner wall of the valve block 7 is provided with a limiting groove 706 that matches the limiting strip 1003. The limiting strip 1003 is slidably connected to the valve block 7 through the limiting groove 706.

[0047] In the above technical solution, by using the limiting groove 706 and the limiting strip 1003 in cooperation, it can be ensured that when the lead screw 9 rotates, the valve core structure 10 will not rotate with the lead screw 9, and the valve core structure 10 can move stably in the vertical direction. Furthermore, through the design of the limiting strip 1003, when the inner threaded sleeve 1001 moves upward and approaches the top of the lead screw 9, the limiting strip 1003 first contacts the second sealing sleeve 13 on the outer wall of the mounting part 12. The limiting strip 1003 plays a limiting role, which can effectively prevent the top of the inner threaded sleeve 1001 from contacting the top of the thread of the lead screw 9 and causing jamming.

[0048] As attached Figure 11 To be continued Figure 12 As shown, the upper surface of the first sealing sleeve 11 has a sleeve hole 1102 that matches the limiting strip 1003, and the limiting strip 1003 is sleeved with the first sealing sleeve 11 through the sleeve hole 1102.

[0049] In the above technical solution, the limiting strip 1003 is sleeved with the first sealing sleeve 11 through the sleeve hole 1102, which can prevent the first sealing sleeve 11 from being displaced between it and the sealing block 1002 under external force, thereby further improving the stability of the connection between the first sealing sleeve 11 and the valve core structure 10.

[0050] As attached Figure 4 To be continued Figure 8As shown, a first groove 704 is provided on the bottom outer wall of the valve block 7, and a second sealing ring 15 is sleeved on the valve block 7 in the first groove 704. The outer wall of the second sealing ring 15 is in contact with the inner wall of the mounting sleeve 401.

[0051] In the above technical solution, the design of the second sealing ring 15 improves the sealing between the valve block 7 and the mounting sleeve 401, preventing gas from directly entering the mounting sleeve 401 through the air inlet pipe 404.

[0052] As attached Figure 4 To be continued Figure 8 As shown, a second wiring hole 703 is provided on the bottom outer wall of the valve block 7, a second groove 705 is provided on the valve block 7 at the second wiring hole 703, a first sealing ring 14 is sleeved on the valve block 7 at the second groove 705, the outer wall of the first sealing ring 14 is in contact with the inner wall of the mounting sleeve 401, the bottom of the mounting sleeve 401 is provided with a through hole that communicates with the second wiring hole 703, and a first wiring hole 501 is provided on the outer wall of the motor cover 5.

[0053] In the above technical solution, the wires of the micro motor 18 extend to the outside of the motor cover 5 through the first wiring hole 501, and then extend to the outside of the mounting sleeve 401 through the second wiring hole 703 and the through hole at the bottom of the mounting sleeve 401, and are electrically connected to the main control unit.

[0054] The specific usage and function of this embodiment are as follows: In use, the exhaust pipe 403 and the intake pipe 404 are respectively connected to the gas passage. The micro motor 18 receives the control signal from the main control unit and starts. The micro motor 18 drives the first gear 801 to rotate. The first gear 801 drives the fourth gear 804 to rotate through the second gear 802 and the third gear 803. The fourth gear 804 drives the first protrusion 805 on the upper surface to be fixed. The first protrusion 805 contacts the second protrusion 902. The first protrusion 805 drives the turntable 901 to rotate through the second protrusion 902. The turntable 901 drives the lead screw 9 to rotate. The lead screw 9 is threadedly engaged with the internal threaded sleeve 1001. The rotation of the lead screw 9 drives the internal threaded sleeve 1001 to move vertically. The internal threaded sleeve 1001 drives the first sealing sleeve 11 to move vertically through the sealing block 1002. When the self-closing device needs to be closed, the micro motor 18 controls the valve core structure 10 to move downward through the transmission assembly 8 and the lead screw 9. The valve core structure 10 drives the first sealing sleeve 11 to move downward, so that the lower surface of the first sealing sleeve 11 is tightly fitted with the bottom of the valve block 7. The first sealing sleeve 11 blocks the air inlet 701 at the bottom of the valve block 7, thereby achieving the sealing and closure of the gas passage. When the self-closing device needs to be opened, the micro motor 18 controls the valve core structure 10 to move upward through the transmission component 8 and the lead screw 9. The valve core structure 10 drives the first sealing sleeve 11 to move upward, so that the lower surface of the first sealing sleeve 11 separates from the bottom of the valve block 7. At this time, the air inlet 701 and the exhaust port 702 are connected. At this time, the gas enters the valve block 7 through the air inlet pipe 404 and the air inlet 701, and is discharged into the mounting sleeve 401 through the exhaust port 702, and then discharged through the exhaust pipe 403, realizing the conduction of the gas passage. The entire transmission process is smooth and precise, the structural connection is reliable, and the stable operation of the device is guaranteed.

[0055] Please refer to the above structure and process. Figures 1-13 .

[0056] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A fully automatic integrated self-closing device for gas pipelines, comprising a housing (1), characterized in that, The top of the outer shell (1) is fixedly connected to a battery cover plate (2) and a valve body cover plate (3). The outer battery compartment (16) is fixedly installed inside the outer shell (1). The battery cover plate (2) is located directly above the outer battery compartment (16). The valve body outer sleeve (4) is fixedly installed inside the outer shell (1). The valve body cover plate (3) is located directly above the valve body outer sleeve (4). A valve block (7) is fixedly installed inside the valve body jacket (4). An air inlet (701) is provided at the bottom of the valve block (7), and an exhaust hole (702) is provided on the side wall of the valve block (7). A motor lower cover (6) is fixedly connected to the upper part of the valve block (7) by screws. A motor upper cover (5) is fixedly connected to the top of the motor lower cover (6). A micro motor (18) is fixedly installed inside the motor lower cover (6), and a transmission assembly (8) is fixedly installed inside the motor lower cover (6). The output end of the micro motor (18) is connected to… The input end of the transmission assembly (8) is fixedly connected, and the output end of the transmission assembly (8) is connected to a lead screw (9). The bottom of the lead screw (9) is threadedly connected to a valve core structure (10). The bottom of the valve core structure (10) is fixedly fitted with a first sealing sleeve (11). The first sealing sleeve (11) corresponds to the air inlet (701). The valve block (7) is fixedly installed with an installation part (12). The transmission assembly (8) is located directly above the installation part (12). The valve core structure (10) and the installation part (12) are slidably fitted together.

2. The fully automatic integrated self-closing device for gas pipelines according to claim 1, characterized in that, A storage battery is fixedly installed inside the battery compartment (16), and a mounting post (1601) is fixedly connected to the outer wall of the battery compartment (16). A switch button (17) is fixedly installed on the outer wall of the outer shell (1).

3. The fully automatic integrated self-closing device for gas pipelines according to claim 1, characterized in that, The valve body outer sleeve (4) includes an installation sleeve (401). The top of the installation sleeve (401) is fixedly connected to a fixing cover (402) by screws. The top of the fixing cover (402) is fixedly connected to an exhaust pipe (403). The outer wall of the valve body cover plate (3) is provided with a through hole that matches the exhaust pipe (403). The exhaust pipe (403) passes through the through hole in the outer wall of the valve body cover plate (3) and extends to the outside of the valve body cover plate (3). The bottom of the installation sleeve (401) is fixedly connected to an air inlet pipe (404). The bottom of the outer shell (1) is provided with a through hole that matches the air inlet pipe (404). The air inlet pipe (404) passes through the through hole at the bottom of the outer shell (1) and extends to the outside of the outer shell (1).

4. The fully automatic integrated self-closing device for gas pipelines according to claim 3, characterized in that, The top of the mounting sleeve (401) is fitted with a third sealing ring (19), which is located at the connection between the mounting sleeve (401) and the fixing cover (402).

5. The fully automatic integrated self-closing device for gas pipelines according to claim 1, characterized in that, The transmission assembly (8) includes a first gear (801), the output end of the micro motor (18) is fixedly connected to the first gear (801), the first gear (801) meshes with a second gear (802), the upper surface of the second gear (802) is rotatably connected to the inner wall of the motor lower cover (6), the bottom of the second gear (802) is fixedly connected to a third gear (803), the lower surface of the third gear (803) is rotatably connected to the mounting part (12), and the third gear (803) meshes with a fourth gear. The gear (804) has a first protrusion (805) fixedly connected to its upper surface. The lead screw (9) is sleeved with the first protrusion (805). The top of the lead screw (9) is fixedly connected to a turntable (901). The turntable (901) is located on the upper surface of the fourth gear (804). The upper surface of the turntable (901) is rotatably connected to the inner wall of the motor lower cover (6). The outer wall of the turntable (901) is fixedly connected to a second protrusion (902) corresponding to the first protrusion (805).

6. A fully automatic integrated self-closing device for gas pipelines according to claim 5, characterized in that, The lower surface of the mounting component (12) is fixedly sleeved with a second sealing sleeve (13). The valve core structure (10) includes an internal thread sleeve (1001). The internal thread sleeve (1001) is threadedly connected to the lead screw (9). The internal thread sleeve (1001) is slidably sleeved with the second sealing sleeve (13). A sealing block (1002) is fixedly connected to the bottom of the internal thread sleeve (1001). The upper surface of the first sealing sleeve (11) is provided with a groove (1101) that matches the sealing block (1002). The first sealing sleeve (11) is sleeved with the sealing block (1002) through the groove (1101).

7. A fully automatic integrated self-closing device for gas pipelines according to claim 6, characterized in that, The upper surface of the sealing block (1002) is fixedly connected to a limiting strip (1003), which is an inverted L-shape. The inner wall of the valve block (7) is provided with a limiting groove (706) that matches the limiting strip (1003). The limiting strip (1003) is slidably connected to the valve block (7) through the limiting groove (706).

8. A fully automatic integrated self-closing device for gas pipelines according to claim 7, characterized in that, The upper surface of the first sealing sleeve (11) is provided with a sleeve hole (1102) that matches the limiting strip (1003), and the limiting strip (1003) is sleeved with the first sealing sleeve (11) through the sleeve hole (1102).

9. A fully automatic integrated self-closing device for gas pipelines according to claim 1, characterized in that, The bottom outer wall of the valve block (7) is provided with a first groove (704), and the valve block (7) is fitted with a second sealing ring (15) in the first groove (704). The outer wall of the second sealing ring (15) is in contact with the inner wall of the mounting sleeve (401).

10. A fully automatic integrated self-closing device for gas pipelines according to claim 1, characterized in that, The bottom outer wall of the valve block (7) is provided with a second wiring hole (703), the valve block (7) is provided with a second groove (705) at the second wiring hole (703), the valve block (7) is fitted with a first sealing ring (14) at the second groove (705), the outer wall of the first sealing ring (14) is in contact with the inner wall of the mounting sleeve (401), and the outer wall of the motor cover (5) is provided with a first wiring hole (501).

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