A gas leakage alarm and automatic gas source cut-off device

Abstract

The utility model discloses a gas leakage alarm and automatic cut off gas source device, it includes cut off device casing, cut off device casing top bottom wall fixedly connected with motor, and the output fixedly connected with rotating screw rod of motor, and the lateral surface of rotating screw rod is connected with the gas block of screw thread, and the lateral surface slidingly connected with the gas valve of gas block, and the inside of gas valve is provided with the communicating groove, alarm casing, the upper surface of alarm casing is provided with the buzzer alarm lamp, and the side inner wall of alarm casing is provided with the fan, and the lateral surface fixedly connected with the filter box of alarm casing, and the lateral surface fixedly connected with the filter screen of filter box, and the lower surface fixedly connected with the connecting pipe of filter box, and the one end fixedly connected with the air pipe of connecting pipe away from filter box. Through above-mentioned parts, motor drives rotating screw rod and gas block to block up communicating groove and make gas unable to realize the function of cutting off gas source through gas valve, and fan inhales air and gas in air pipe into alarm and carries out detection, improves the speed of inductive gas.

Description

Technical Field

[0001] This utility model relates to the technical field of gas leak alarm devices, and in particular to a gas leak alarm and an automatic gas supply cut-off device. Background Technology

[0002] Existing gas leak alarms and automatic gas shut-off devices all use a set of installation mechanisms to make gas leak alarms easy to install and avoid the influence of extra power cords on other components. However, they cannot quickly detect the gas around the pipeline. For example, a household gas leak alarm and automatic gas shut-off device disclosed in Chinese Patent Application No. CN202220085962.1, although it sets up a first composite connecting frame, a second composite connecting frame, and a limiting plate to form a flexible passive push-moving bracket, can not quickly detect the gas at the pipeline connected to the gas shut-off valve. It can only detect the gas when it diffuses into the air, and it cannot discharge indoor gas to the outside, which limits its use. Utility Model Content

[0003] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a gas leak alarm and an automatic gas supply cut-off device. A set of gas outlet pipes is added to the gas outlet of the gas shut-off valve, and the gas outlet pipes are connected to the alarm with a connecting pipe, so that the alarm can more easily detect whether the pipe connected to the gas outlet is leaking. After a gas leak, the gas is discharged to the outside by a fan and a gas inlet, reducing the concentration of gas in the room. At the same time, by controlling the motor to drive the rotating screw to rotate, the gas shut-off block can block the connecting groove, so that the gas cannot pass through the gas shut-off valve. A sealing gasket is provided at the connecting groove to improve the sealing effect of the gas shut-off block, thus realizing the function of automatically cutting off the gas supply.

[0004] To achieve the above objectives, the following structure is proposed: Structure 1: This utility model also provides an automatic gas supply cut-off device, comprising: a cut-off device housing, a motor fixedly connected to the upper bottom wall of the cut-off device housing, a rotating screw fixedly connected to the output end of the motor, a gas cut-off block threadedly connected to the side surface of the rotating screw, a gas cut-off valve slidably connected to the side surface of the gas cut-off block, and a connecting groove provided inside the gas cut-off valve. Through these components, the motor can drive the rotating screw to block the connecting groove, preventing gas from passing through the gas cut-off valve and thus achieving the function of cutting off the gas supply.

[0005] According to the present invention, an automatic gas supply cut-off device has a gas outlet fixedly connected to the side surface of the gas shut-off valve, and a gas inlet fixedly connected to the end of the gas shut-off valve away from the gas outlet. Gas is allowed to enter the gas shut-off valve through the inlet and exit through the gas outlet.

[0006] According to the present invention, an automatic gas supply cut-off device is provided inside the gas shut-off valve, and the gas supply channel is connected to a connecting channel. This allows the gas to move along the gas supply channel and the connecting channel within the gas shut-off valve.

[0007] According to the automatic gas supply cut-off device of this utility model, a sealing gasket is fixedly connected to the inner wall of the gas shut-off valve, and the side surface of the gas shut-off block is fixedly connected to the sealing gasket during operation. The sealing gasket improves the fixing effect of the gas shut-off block on the connecting groove.

[0008] According to the present invention, an automatic gas supply cut-off device is provided, wherein a sealing ring is fixedly connected to the side surface of the gas shut-off valve, and the side surface of the rotating screw is rotatably connected to the sealing ring. The sealing ring is used to improve the sealing effect between the rotating screw and the gas shut-off valve.

[0009] Structure Two: This utility model also provides a gas leak alarm as described above, comprising: an alarm housing, a buzzer alarm light on the upper surface of the alarm housing, a control board fixedly connected to the inner side wall of the alarm housing, a gas sensor on the side surface of the alarm housing, a fan on the inner side wall of the alarm housing, a filter box fixedly connected to the side surface of the alarm housing, a filter screen fixedly connected to the side surface of the filter box, a connecting pipe fixedly connected to the lower surface of the filter box, a gas outlet pipe fixedly connected to the end of the connecting pipe away from the filter box, and an automatic gas supply cut-off device as shown in Structure One at the end of the gas outlet pipe away from the connecting pipe. Through these components, air and gas from the gas outlet pipe can be drawn into the alarm for detection by the fan, improving the speed of gas detection.

[0010] According to the gas leak alarm of this utility model, the buzzer alarm light is electrically connected to the control board, and the gas sensor is also electrically connected to the control board. After the gas sensor detects gas, it transmits a signal to the control board, which then controls the buzzer alarm light to operate.

[0011] According to the present invention, a gas leak alarm has a gas inlet fixedly connected to the side surface of the alarm housing, and the filter box is located directly in front of the fan. The fan draws air into the alarm housing for detection by the gas sensor, and the drawn-in gas is discharged through the gas inlet.

[0012] According to the present invention, a gas leak alarm is provided, wherein the control board is connected to a motor via a signal line, and the inner wall of the gas outlet pipe is fixedly connected to the gas outlet. When a gas leak is detected, the control board will cause the motor to drive the rotating screw to rotate via the signal line, and the gas outlet pipe will be fitted over the outside of the gas outlet. When the pipe connected to the gas outlet leaks, the gas will be transported to the connecting pipe through the gas outlet pipe.

[0013] Beneficial effects: Compared with existing technologies, an additional gas outlet pipe is added to the gas outlet of the gas shut-off valve. The gas outlet pipe is connected to the alarm via a connecting pipe, making it easier for the alarm to detect whether the pipe connected to the gas outlet is leaking. After a gas leak, the gas will be discharged outdoors using a fan and gas inlet, reducing the concentration of gas indoors. At the same time, by controlling the motor to drive the rotating screw to rotate, the gas shut-off block can block the connecting groove, preventing gas from passing through the gas shut-off valve, thus realizing the function of automatically cutting off the gas supply. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is an overall structural diagram of the gas leak alarm and automatic gas supply cut-off device of this utility model; Figure 2 This is a cross-sectional view of the automatic gas supply cut-off device of this utility model; Figure 3 This utility model relates to an automatic gas supply cut-off device. Figure 2 Partial structural diagram at point A in the middle; Figure 4 This is a cross-sectional view of the gas leak alarm of this utility model.

[0015] Legend: 1. Cut-off device housing; 2. Air shut-off valve; 3. Rotating screw; 4. Air outlet pipe; 5. Alarm housing; 6. Buzzer alarm light; 7. Gas sensor; 8. Air inlet; 9. Filter box; 10. Filter screen; 11. Connecting pipe; 12. Motor; 13. Sealing ring; 14. Air outlet; 15. Air inlet; 16. Conveying trough; 17. Air shut-off block; 18. Sealing gasket; 19. Connecting groove; 20. Control board; 21. Fan. Detailed Implementation

[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0017] Reference Figure 1-3As a first embodiment, this utility model provides an automatic gas supply cut-off device, which includes: a cut-off device housing 1, a motor 12 fixedly connected to the upper bottom wall of the cut-off device housing 1, a control board 20 connected to the motor 12 via a signal line, a rotating screw 3 fixedly connected to the output end of the motor 12, a gas cut-off block 17 threadedly connected to the side surface of the rotating screw 3, a gas cut-off valve 2 slidably connected to the side surface of the gas cut-off block 17, and a connecting groove 19 provided inside the gas cut-off valve 2.

[0018] Specifically, there are two sets of rotating screws 3 and gas shut-off blocks 17, located at the upper and lower ends of the gas shut-off valve 2, respectively. One set is connected to a motor 12. When a gas leak is detected, the motor 12 in the housing 1 of the shut-off device will drive the rotating screws 3 to rotate and drive the gas shut-off blocks 17 to move in the vertical direction, so that the gas shut-off blocks 17 can block one end of the connecting groove 19, preventing the gas from flowing through the conveying groove 16 and the connecting groove 19 through the gas shut-off valve 2, thus achieving the gas shut-off effect. The same function can also be achieved by manually rotating the other set of rotating screws 3.

[0019] An air outlet 14 is fixedly connected to the side surface of the air shut-off valve 2. The inner wall of the air outlet pipe 4 is fixedly connected to the air outlet 14. An air inlet 15 is fixedly connected to the end of the air shut-off valve 2 away from the air outlet 14. A conveying groove 16 is provided inside the air shut-off valve 2. The conveying groove 16 is connected to the connecting groove 19. A sealing gasket 18 is fixedly connected to the inner wall of the air shut-off valve 2. The side surface of the air shut-off block 17 is fixedly connected to the sealing gasket 18 during operation. A sealing ring 13 is fixedly connected to the side surface of the air shut-off valve 2. The side surface of the rotating screw 3 is rotatably connected to the sealing ring 13.

[0020] Specifically, the gas shut-off valve 2 is provided with an outlet 14 and an inlet 15. Gas enters from the inlet 15 and exits from the outlet 14. The connecting groove 19 connects the two conveying grooves 16, allowing the gas to flow through the entire gas shut-off valve 2. When the gas shut-off block 17 blocks the connecting groove 19, the sealing gasket 18 fits against the gas shut-off block 17, enhancing the sealing effect of the gas shut-off block 17. At the same time, sealing rings 13 are also provided on the outer side of the two rotating screws 3 to prevent gas leakage through the rotating screws 3.

[0021] refer to Figure 1 , Figure 4As a second embodiment, a gas leak alarm of this utility model includes: an alarm housing 5, a buzzer alarm light 6 provided on the upper surface of the alarm housing 5, a control board 20 fixedly connected to the inner side wall of the alarm housing 5, a gas sensor 7 provided on the side surface of the alarm housing 5, a fan 21 provided on the inner side wall of the alarm housing 5, a filter box 9 fixedly connected to the side surface of the alarm housing 5, a filter screen 10 fixedly connected to the side surface of the filter box 9, a connecting pipe 11 fixedly connected to the lower surface of the filter box 9, a gas outlet pipe 4 fixedly connected to the end of the connecting pipe 11 away from the filter box 9, and an automatic gas supply cut-off device shown in the first embodiment provided at the end of the gas outlet pipe 4 away from the connecting pipe 11.

[0022] Specifically, the gas outlet pipe 4 is fitted onto the outside of the pipe connecting the gas outlet 14 and the gas outlet 14, and is connected to the filter box 9 by the connecting pipe 11. When in use, the fan 21 will draw external gas into the alarm housing 5 through the filter screen 10 and the filter box 9. The filter screen 10 is used to prevent dust in the air from entering the filter box 9, and the gas in the gas outlet pipe 4 can also be drawn into the filter box 9 through the connecting pipe 11. When there is a gas leak, it can be delivered to the inside of the alarm housing 5 through the filter box 9 and detected by the gas sensor 7. Then the gas sensor 7 will transmit the signal to the control board 20, and the control board 20 will control the buzzer alarm light 6 and the motor 12 to work, so as to realize the functions of alarm and gas cut-off.

[0023] An air inlet 8 is fixedly connected to the side surface of the alarm housing 5, and the filter box 9 is located directly in front of the fan 21.

[0024] Specifically, the gas inlet 8 can be connected to the exhaust pipe. When there is a gas leak, the fan 21 can draw in the gas and discharge it to the outside through the gas inlet 8 and the exhaust pipe, thereby reducing the amount of gas in the room.

[0025] Working principle: During use, gas enters through the inlet 15 of the gas shut-off valve 2, flows through the conveying trough 16 and the connecting trough 19, and is then discharged. Simultaneously, the fan 21 draws external gas through the filter screen 10 and filter box 9 into the alarm housing 5. The filter screen 10 prevents dust from entering the filter box 9, and also draws gas from the outlet pipe 4 into the filter box 9 through the connecting pipe 11. In case of gas leakage, the gas is conveyed through the filter box 9 to the inside of the alarm housing 5 where it is detected by the gas sensor 7, and then discharged through the gas outlet 8. Then, the gas sensor 7 will transmit the signal to the control board 20, which will control the buzzer alarm light 6 and the motor 12 to work. At this time, the motor 12 will drive a set of rotating screws 3 to rotate and drive the gas cut-off block 17 to move in the vertical direction, so that the gas cut-off block 17 can block one end of the connecting groove 19, preventing the gas from being discharged to the gas outlet pipe 4 through the connecting groove 19. At the same time, the sealing gasket 18 will wrap the gas cut-off block 17 inside, improving the sealing effect. The same function can also be achieved by manually rotating another set of rotating screws 3.

[0026] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An automatic gas supply cut-off device, characterized in that, include: The cutting device housing (1) has a motor (12) fixedly connected to its upper bottom wall. The output end of the motor (12) is fixedly connected to a rotating screw (3). The side surface of the rotating screw (3) is threadedly connected to an air cut-off block (17). The side surface of the air cut-off block (17) is slidably connected to an air cut-off valve (2). The air cut-off valve (2) has a connecting groove (19) inside.

2. The automatic gas supply cut-off device according to claim 1, characterized in that, An air outlet (14) is fixedly connected to the side surface of the air shut-off valve (2), and an air inlet (15) is fixedly connected to the end of the air shut-off valve (2) away from the air outlet (14).

3. The automatic gas supply cut-off device according to claim 1, characterized in that, The gas shut-off valve (2) has a conveying groove (16) inside, which is connected to the connecting groove (19).

4. The automatic gas supply cut-off device according to claim 1, characterized in that, A sealing gasket (18) is fixedly connected to the inner side wall of the gas shut-off valve (2), and the side surface of the gas shut-off block (17) is fixedly connected to the sealing gasket (18) during operation.

5. The automatic gas supply cut-off device according to claim 1, characterized in that, A sealing ring (13) is fixedly connected to the side surface of the gas shut-off valve (2), and the side surface of the rotating screw (3) is rotatably connected to the sealing ring (13).

6. A gas leak alarm, characterized in that, include: An alarm housing (5) is provided with a buzzer alarm light (6) on its upper surface. A control board (20) is fixedly connected to the inner side wall of the alarm housing (5). A gas sensor (7) is provided on the side surface of the alarm housing (5). A fan (21) is provided on the inner side wall of the alarm housing (5). A filter box (9) is fixedly connected to the side surface of the alarm housing (5). A filter screen (10) is fixedly connected to the side surface of the filter box (9). A connecting pipe (11) is fixedly connected to the lower surface of the filter box (9). An air outlet pipe (4) is fixedly connected to the end of the connecting pipe (11) away from the filter box (9). An automatic gas supply cut-off device according to any one of claims 1-5 is provided at the end of the air outlet pipe (4) away from the connecting pipe (11).

7. A gas leak alarm according to claim 6, characterized in that, The buzzer alarm light (6) is electrically connected to the control board (20), and the gas sensor (7) is electrically connected to the control board (20).

8. A gas leak alarm according to claim 6, characterized in that, An air inlet (8) is fixedly connected to the side surface of the alarm housing (5), and the filter box (9) is located directly in front of the fan (21).

9. A gas leak alarm according to claim 6, characterized in that, The control board (20) is connected to the motor (12) via a signal line, and the inner side wall of the air outlet pipe (4) is fixedly connected to the air outlet (14).

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