Novel gas steel cylinder safety protection device

Abstract

The utility model relates to the technical field of gas steel cylinders, and discloses a novel gas steel cylinder safety protection device which comprises a protective cover arranged on a cylinder body, a hand wheel located in the protective cover, a gear arranged outside the hand wheel in a sleeving mode and a rack meshed with the gear. The air pipe is arranged at the top of the bottle body, and the hand wheel comprises a knob and a screw which is in threaded connection with the inside of the air pipe; a linear driving structure used for driving the rack to do reciprocating linear motion is arranged on the side face of the protective cover. The linear driving structure is connected with the rack; a gas detector and a controller are arranged in the shield; the controller is electrically connected with the linear driving structure and the fuel gas detector. Through the arrangement of the gear, the rack and the linear driving structure for driving the rack to move, when gas leakage is detected, the rack drives the gear to rotate so as to drive the hand wheel to rotate, and the purposes of automatically closing the valve and preventing gas from continuously leaking are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas cylinders, in particular to a novel safety protection device for gas cylinders. Background Art

[0002] Gas cylinders, as containers for storing liquefied petroleum gas (LPG), are widely used in households and industrial fields. Since they store flammable and explosive gases, it is crucial to take appropriate protective measures and devices. Existing gas cylinder protection devices, such as the Chinese utility model patent with document number CN217816202U, entitled a new type of gas cylinder safety protection device, and the Chinese utility model patent with document number CN219283066U, entitled a gas cylinder safety protection device, both focus on designing external protection measures for gas cylinders, such as setting clamp rings, card plates, etc. to fix the position of the cylinder to prevent shaking, and setting a box to place the gas cylinder, thereby playing a role of isolation and protection; however, there are few treatment devices for gas leaks. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a novel gas cylinder safety protection device. By setting a gear, a rack and a linear drive structure for driving the rack to move, when a gas leak is detected, the rack drives the gear to rotate, thereby driving the hand wheel to rotate, thereby achieving the purpose of automatically closing the valve and preventing the gas from continuing to leak.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a new type of gas cylinder safety protection device, including a shield arranged on the bottle body, a handwheel located in the shield, a gear sleeved on the outside of the handwheel, and a rack meshing with the gear; an air pipe is arranged on the top of the bottle body, the handwheel includes a knob and a screw, and the screw is threadedly connected to the inside of the air pipe; a linear drive structure for driving the rack to perform reciprocating linear motion is arranged on the side of the shield; the linear drive structure is connected to the rack; a gas detector and a controller are arranged in the shield; the controller is electrically connected to the linear drive structure and the gas detector respectively.

[0005] Furthermore, the gear is sleeved on the upper part of the screw, and the linear drive structure includes a protective box fixed to the shield by bolts, and the protective box is set with an opening on one side facing the gear; a micro motor is arranged inside the protective box, and an electromagnetic clutch is arranged at the output end of the micro motor, and the electromagnetic clutch is connected to one end of the transmission shaft; the other end of the transmission shaft is connected to a rotating sleeve, and the rotating sleeve is slidably connected to the driving shaft inside, and a spiral groove connecting the inside and the outside is provided on the side of the rotating sleeve, and a driving rod is fixedly connected to the outside of the driving shaft, and the driving rod is inserted into the spiral groove and slidably connected to it; one end of the driving shaft is fixedly connected to the rack.

[0006] Furthermore, the protection box is fixedly connected with a connecting plate, the connecting plate is fixedly connected with a limiting plate, a limiting groove is arranged on the limiting plate, and the rack part is inserted into the limiting groove and is slidably connected thereto.

[0007] Furthermore, the linear drive structure is an electric push rod or a cylinder connected to the rack.

[0008] Furthermore, the gas detector and the controller are both fixed on the outside of the protection box.

[0009] Furthermore, a pressure ring is fixedly connected to the lower surface of the gear, a coil spring is arranged around the screw rod on the upper surface of the air pipe, a push block is fixedly connected to the outer side of the coil spring, and the push block and the pressure ring correspond in vertical position.

[0010] Furthermore, in the vertical direction, the inner diameter of the pressure ring is located between the outer wall and the inner wall of the push block; a beveled surface is provided on the inner side of the bottom of the pressure ring, and a second beveled surface matching the beveled surface is provided on the outer side of the top of the push block; rubber is provided between the coil spring and the screw.

[0011] The beneficial effects of the utility model are as follows: the utility model is provided with a gear, a rack and a linear driving structure for driving the rack to move. When a gas leak is detected, the rack drives the gear to rotate, thereby driving the hand wheel to rotate, thereby achieving the purpose of automatically closing the valve to prevent the gas from continuing to leak. In order to quickly cut off the gas source and avoid gas leakage, under normal circumstances, especially for household gas cylinders, the hand wheel generally only needs to be rotated ninety degrees to close the valve. Other types generally do not exceed five turns at most, and only need to be rotated 120°-180° to be closed. Therefore, it is only necessary to design the height of the hand wheel to install the gear so that it does not affect the opening and closing of the valve when it is raised or lowered. By setting the inclined surface of the pressure ring and the inclined surface of the push block, it is convenient to move the push block inward when the pressure ring is pressed down. An electromagnetic clutch is provided. When the gas is used normally, the hand wheel is turned to drive the gear to move until the rotating sleeve is driven to rotate without affecting the motor. Only when the motor is started and energized, the output end of the motor will transmit power to the transmission shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the automatic closing valve structure of the utility model;

[0014] Figure 3 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0015] Figure 4 This is a schematic diagram of the linear drive structure of the utility model;

[0016] Figure 5It is a schematic diagram of the pressure ring of the utility model.

[0017] In the figure: 1. bottle body; 2. protective cover; 3. air pipe; 4. hand wheel; 5. protective box; 6. gear; 7. pressure ring; 8. beveled surface; 9. micro motor; 10. electromagnetic clutch; 11. rotating sleeve; 12. transmission shaft; 13. spiral groove; 14. push rod; 15. push shaft; 16. rack; 17. limit plate; 18. connecting plate; 19. coil spring; 20. rubber; 21. push block; 22. gas detector; 23. controller. DETAILED DESCRIPTION

[0018] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0019] Example:

[0020] like Figure 1-Figure 5 As shown, a novel gas cylinder safety protection device comprises a shield 2 arranged on a bottle body 1, a hand wheel 4 located in the shield 2, a gear 6 sleeved on the outside of the hand wheel 4 and fixedly connected thereto, and a rack 16 meshing with the gear 6 for driving the gear 6 to rotate; an air pipe 3 is arranged on the top of the bottle body 1, the hand wheel 4 comprises a knob and a screw, and the screw is threadedly connected to the inside of the air pipe 3; a linear drive structure for driving the rack 16 to perform reciprocating linear motion is arranged on the side of the shield 2; the linear drive structure is connected to the end of the rack 16; a gas detector 22 and a controller 23 are arranged in the shield 2; the controller 23 is electrically connected to the linear drive structure and the gas detector 22 respectively.

[0021] The gear 6 is sleeved on the upper part of the screw rod, and the linear drive structure includes a protective box 5 fixed to the shield 2 by bolts, and the protective box 5 is opened on one side facing the gear 6; a micro motor 9 is arranged inside the protective box 5, and an electromagnetic clutch 10 is arranged at the output end of the micro motor 9, and the electromagnetic clutch 10 is connected to one end of the transmission shaft 12; the other end of the transmission shaft 12 is connected to the rotating sleeve 11, and the rotating sleeve 11 is slidably connected to the driving shaft 15. A sliding groove is provided on the side of the rotating sleeve 11 away from the transmission shaft 12, and the driving shaft 15 extends into the sliding groove. A spiral groove 13 connected inside and outside is provided on the side of the rotating sleeve 11, and a driving rod 14 is fixedly connected to the outer side of a section of the driving shaft 15 located inside the rotating sleeve 11. The driving rod 14 is inserted into the spiral groove 13 and slidably connected thereto. When the rotating sleeve 11 rotates, the driving rod 14 is pushed through the spiral groove 13, and the driving rod 14 then pushes the driving shaft 15; the driving shaft 15 is fixedly connected to the rack 16 at one end away from the rotating sleeve 11.

[0022] The protective box 5 is fixedly connected with a connecting plate 18, and the connecting plate 18 is fixedly connected with a limiting plate 17. A limiting groove is provided on the limiting plate 17, and the rack 16 is partially inserted into the limiting groove and is slidably connected thereto; the limiting plate 17 can be located above, below or on the side away from the gear 6. The length of the rack 16 inserted into the limiting groove is determined by the stroke of the rack 16 and should be greater than its stroke. The limiting plate 17 is provided to further limit the rack 16 to prevent its movement from deflecting; the meshing of the gear 6 and the rack 16 can also limit the deviation of the rack 16 in movement.

[0023] By setting up the gear 6, the rack 16 and the linear drive structure for driving the rack to move, when a gas leak is detected, the rack 16 drives the gear 6 to rotate, thereby driving the handwheel 4 to rotate, automatically closing the valve to prevent the gas from continuing to leak; in order to quickly cut off the gas source and avoid gas leakage, under normal circumstances, especially for household gas cylinders, the handwheel only needs to be rotated ninety degrees to close the valve; other types generally do not exceed five turns at most, and only need to be rotated 120°-180° to close, so it is only necessary to design the height of the handwheel to install the gear so that it does not affect the opening and closing of the valve when it is raised or lowered.

[0024] The linear drive structure is connected to the electric push rod or cylinder of the rack 16, but the electric push rod is generally not used in actual use because the torque error transmitted by the clutch adjustment is large and the positioning accuracy of the electric push rod may not be high, which is an obvious disadvantage for applications that require precise control. In addition, there are other disadvantages that make this solution unsuitable.

[0025] The gas detector 22 and the controller 23 are both fixed on the outside of the protection box 5, which is convenient for installation and removal together with the protection box 5.

[0026] A pressure ring 7 is fixedly connected to the lower surface of the gear 6, a coil spring 19 is arranged around the screw on the upper surface of the air pipe 3, and a push block 21 is fixedly connected to the outer side of the coil spring 19. The push block 21 corresponds to the pressure ring 7 in the vertical direction.

[0027] In the vertical direction, the inner diameter of the pressure ring 7 is located between the outer wall and the inner wall of the push block 21; the outer wall and the inner wall are relative to the screw, the one close to the screw is the inner wall, and the one far from the inner wall is the outer wall; a chamfered surface 8 is provided on the inner side of the bottom of the pressure ring 7, and a second chamfered surface matching the chamfered surface 8 is provided on the outer side of the top of the push block 21, and the positions of the two chamfered surfaces correspond; the two inclined surfaces are inclined in the same direction, that is, from the outside to the inside; a rubber 20 is provided between the coil spring 19 and the screw; the coil spring 19 is placed on the upper surface of the trachea 3, the rubber 20 is fixed to the coil spring 19, and the rubber 20 is elastic. When the coil spring 19 contracts, the rubber 20 can be compressed to fit tightly against the screw, while filling the gap between the screw and the trachea 3, so as to achieve sealing between the air outlet of the valve and the handwheel 4.

[0028] By setting the inclined surface of the pressure ring and the inclined surface of the push block, it is convenient to move the push block inward when the pressure ring is pressed down; an electromagnetic clutch is set, and when the gas is used normally, turning the hand wheel drives the gear to move, and it will not affect the motor until the rotating sleeve is driven to rotate. Only when the motor is started and energized, the output end of the motor will transmit power to the transmission shaft.

[0029] Working process: put the gear 6 on the screw of the handwheel, the two can be interference fit or welded, install the protective box 5 together with the rack 16 in the protective cover 2 through bolts, so that the rack 16 is meshed with the gear 6; there is an opening on the protective cover 2, which is used to facilitate people to reach into the protective cover to turn the handwheel 4, connect the gas pipeline, etc.; the electromagnetic clutch is not energized in the normal state. When the gas detector 22 detects a gas leak, the gas detector 22 transmits a signal to the controller 23, and the controller 23 controls the micro motor 9 to start, and at the same time controls the power supply to energize the electromagnetic clutch 10 so that the micro motor 9 transmits power to the transmission shaft 12 through the electromagnetic clutch 10, and the transmission shaft 12 drives the rotation The sleeve 11 is moved, and the rotating sleeve 11 drives the spiral groove 13. The rotation of the spiral groove 13 drives the push rod 14 to make it move along the length direction of the rack 16. The push rod 14 drives the push shaft 15, and the push shaft 15 drives the rack 16. The rack 16 drives the gear 6 to rotate, and the gear 6 drives the hand wheel 4 to rotate to tighten the valve, and the gas is closed and discharged from the gas pipe 3; while the hand wheel 4 rotates and presses down, the pressure ring 7 rotates and falls, and the inclined surface 8 thereon is matched with the second inclined surface on the push block 21. The falling process of the pressure ring after contact keeps pushing the push block 21 inward, and the push block 21 pushes the coil spring 19 inward, and the coil spring 19 squeezes the rubber 20 to seal the connection between the hand wheel 4 and the gas pipe 3.

[0030] The above description is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A new type of gas cylinder safety protection device, characterized by: The invention comprises a protective cover (2) arranged on a bottle body (1), a hand wheel (4) located inside the protective cover (2), a gear (6) sleeved outside the hand wheel (4), and a rack (16) meshing with the gear (6); an air pipe (3) is arranged on the top of the bottle body (1); the hand wheel (4) comprises a knob and a screw rod, and the screw rod is threadedly connected to the inside of the air pipe (3); a linear drive structure for driving the rack (16) to perform reciprocating linear motion is arranged on the side of the protective cover (2); the linear drive structure is connected to the rack (16); a gas detector (22) and a controller (23) are arranged inside the protective cover (2); and the controller (23) is electrically connected to the linear drive structure and the gas detector (22), respectively.

2. A novel gas cylinder safety protection device according to claim 1, characterized in that: The gear (6) is sleeved on the upper part of the screw rod. The linear drive structure comprises a protective box (5) fixed to the protective cover (2) by bolts. The protective box (5) is arranged with an opening on one side facing the gear (6). A micro motor (9) is arranged inside the protective box (5). An electromagnetic clutch (10) is arranged at the output end of the micro motor (9). The electromagnetic clutch (10) is connected to one end of a transmission shaft (12). The other end of the transmission shaft (12) is connected to a rotating sleeve (11). The rotating sleeve (11) is slidably connected to a driving shaft (15). A spiral groove (13) communicating inside and outside is provided on the side of the rotating sleeve (11). A driving rod (14) is fixedly connected to the outside of the driving shaft (15). The driving rod (14) is inserted into the spiral groove (13) and is slidably connected to the spiral groove (13). One end of the driving shaft (15) is fixedly connected to a rack (16).

3. A new type of gas cylinder safety protection device according to claim 2, characterized in that: The protection box (5) is fixedly connected with a connecting plate (18), and the connecting plate (18) is fixedly connected with a limiting plate (17). A limiting groove is provided on the limiting plate (17), and the rack (16) is partially inserted into the limiting groove and slidably connected thereto.

4. A novel gas cylinder safety protection device according to claim 1, characterized in that: The linear drive structure is an electric push rod or a cylinder connected to the rack (16).

5. A novel gas cylinder safety protection device according to claim 1, characterized in that: The gas detector (22) and the controller (23) are both fixed on the outside of the protection box (5).

6. A novel gas cylinder safety protection device according to claim 1, characterized in that: A pressure ring (7) is fixedly connected to the lower surface of the gear (6), a coil spring (19) is arranged around the screw rod on the upper surface of the air pipe (3), a push block (21) is fixedly connected to the outer side of the coil spring (19), and the push block (21) corresponds to the pressure ring (7) in the vertical direction.

7. A novel gas cylinder safety protection device according to claim 6, characterized in that: In the vertical direction, the inner diameter of the pressure ring (7) is located between the outer wall and the inner wall of the push block (21); a chamfered surface (8) is provided on the inner side of the bottom of the pressure ring (7), and a second chamfered surface matching the chamfered surface (8) is provided on the outer side of the top of the push block (21); and rubber (20) is provided between the coil spring (19) and the screw rod.

Images