Gas safety automatic cut-off device

Abstract

The utility model discloses a gas safety automatic cut-off device, relates to the field of gas pipeline accessories, and aims to solve the problems that in the prior art, gas pipelines are all connected to each resident home, leakage closing devices are not installed on the existing pipelines, and explosion and fire disasters are prone to occurring after a large amount of gas leaks. A cutting-off groove is formed in one side of the middle of the interior of the automatic cutting-off device, an annular groove is formed in one side of the cutting-off groove in the automatic cutting-off device, a control device is fixedly connected to one side of the upper end of the automatic cutting-off device, a spoiler is arranged in the cutting-off groove, and a plurality of vent grooves are formed in the spoiler in an annular array mode. A spring is arranged on one side of the spoiler, supporting rods are fixedly connected to the upper end and the lower end of the other side of the spoiler, an annular sealing gasket is fixedly connected to the end face of one side of the cutting-off groove, an annular rotating piece is arranged on one side in the annular groove, and arc-shaped grooves are formed in the front end and the rear end in the annular rotating piece.

Description

Technical Field

[0001] The utility model relates to the field of gas pipeline accessories, in particular to a gas safety automatic cut-off device. Background Art

[0002] Compared with developed countries, my country's gas supply industry started later, and the gas distributed mainly includes three types: coal gas, liquefied petroleum gas and natural gas. my country's gas supply has increased significantly since the 1990s. Among them, after a significant increase in the supply of artificial coal gas in 1990, it is in a relatively slow growth stage due to its disadvantages such as high pollution and strong toxicity; liquefied petroleum gas is affected by the rise in oil prices, and the supply remains stable; the price of natural gas with the same calorific value is 30%-50% cheaper than gasoline and diesel, which is obviously economical. At the same time, the country pays more and more attention to environmental protection, and the market demand for clean energy continues to grow. As a clean, efficient and cheap energy, natural gas consumption has developed rapidly.

[0003] At present, gas pipelines are connected to every household, and no leakage shut-off devices are installed on the existing pipelines. When a large amount of gas leaks, explosions and fires are prone to occur. Therefore, the market urgently needs to develop a gas safety automatic shut-off device to help people solve the existing problem. Utility Model Content

[0004] The purpose of the utility model is to provide a gas safety automatic shut-off device to solve the problem raised in the above background technology that currently gas pipelines are connected to each household, no leakage shut-off devices are installed on the existing pipelines, and explosions and fires are prone to occur when a large amount of gas leaks.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas safety automatic shut-off device, comprising an automatic shut-off device, a shut-off groove is provided on one side of the middle part of the automatic shut-off device, an annular groove is provided on one side of the shut-off groove inside the automatic shut-off device, a control device is fixedly connected to one side of the upper end of the automatic shut-off device, a gas sensor is fixedly connected to the control device, a baffle is provided inside the shut-off groove, a plurality of ventilation grooves are provided in an annular array on the baffle, a spring is provided on one side of the baffle, support rods are fixedly connected to the upper and lower ends of the other side of the baffle, an annular sealing gasket is fixedly connected to the end face of one side of the shut-off groove, an annular rotating sheet is provided on one side of the annular groove, arc grooves are provided at the front and rear ends of the annular rotating sheet, and an annular tooth portion is fixedly connected to one side of the annular rotating sheet.

[0006] Preferably, a first sealing slot is provided in the middle of one side of the automatic cutting device, and a second sealing slot is provided in the middle of the other side of the automatic cutting device, and the first sealing slot and the second sealing slot are respectively connected to both sides of the cutting groove.

[0007] Preferably, the first sealing slot is sealedly connected to an air supply pipe, and the second sealing slot is sealedly connected to an air delivery pipe.

[0008] Preferably, one end of the two support rods passes through the annular sealing gasket and one end surface of the cutting groove in sequence, extends to the inside of the annular groove and abuts against one side of the annular rotating sheet.

[0009] Preferably, an annular limiting plate is fixedly connected to one side of the annular tooth portion inside the annular groove.

[0010] Preferably, a motor is fixedly arranged in the middle of the front end of the annular groove, and a gear is fixedly connected to the output shaft of the motor.

[0011] Preferably, the gear on the motor output shaft is meshingly connected with the annular tooth portion.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, a cutting groove is provided on one side of the middle part of the automatic cutting device through the setting of the automatic cutting device. When the gas sensor detects gas leakage, the motor is controlled by the control device to drive the annular rotating plate to rotate, so that the two arc grooves on the annular rotating plate rotate. When the two arc grooves rotate to one side of the two support rods, the baffle is pushed to move by the spring, and the baffle pushes the support rod to insert into the arc groove. At the same time, the baffle fits with the annular sealing gasket to achieve the closure of the ventilation groove. The baffle and the annular sealing gasket are made to fit more closely through the gas supply pressure to ensure the cutting off of gas delivery.

[0014] 2. In the utility model, through the setting of the ventilation groove, the first sealing slot is sealed and connected with the air supply pipe, and the second sealing slot is sealed and connected with the gas transmission pipe. The gas is supplied to the cutting groove through the first sealing slot by the air supply pipe. The gas passes through the ventilation groove on the baffle inside the cutting groove and then passes through the second sealing slot to the gas transmission pipe. When the gas leaks, the gas transmission pipeline can be cut off by simply closing the ventilation groove.

[0015] 3. In the utility model, through the provision of an annular limiting piece, an annular limiting piece is fixedly connected to one side of the annular tooth portion inside the annular groove, and the annular limiting piece provides support for the annular rotating piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the gas safety automatic cut-off device of the utility model;

[0017] Figure 2 It is the main sectional view of the utility model;

[0018] Figure 3 It is a top sectional view of the utility model;

[0019] Figure 4 This is a side sectional view of the annular groove of the utility model

[0020] Figure 5 It is an enlarged view of the detail A of the utility model;

[0021] Figure 6 It is a side view of the spoiler of the utility model.

[0022] In the figure: 1. automatic cutting device; 101. first sealing slot; 102. second sealing slot; 103. control device; 104. gas sensor; 105. cutting slot; 106. annular slot; 2. air supply pipe; 201. air delivery pipe; 3. baffle; 301. ventilation slot; 302. spring; 303. support rod; 304. annular sealing gasket; 4. annular rotating plate; 401. arc groove; 402. annular tooth portion; 403. annular limit plate; 5. motor; 501. gear. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] See also Figure 1-6 The utility model provides an embodiment: a gas safety automatic cut-off device, comprising an automatic cut-off device 1, a cut-off groove 105 is arranged on one side of the middle part inside the automatic cut-off device 1, an annular groove 106 is arranged on one side of the cut-off groove 105 inside the automatic cut-off device 1, a control device 103 is fixedly connected to one side of the upper end of the automatic cut-off device 1, a gas sensor 104 is fixedly connected to the control device 103, a baffle 3 is arranged inside the cut-off groove 105, a plurality of ventilation grooves 301 are arranged in an annular array on the baffle 3, a spring 302 is arranged on one side of the baffle 3, a support rod 303 is fixedly connected to both upper and lower ends of the other side of the baffle 3, an annular sealing gasket 304 is fixedly connected to one end face of the cut-off groove 105, an annular rotating piece 4 is arranged on one side of the annular groove 106, an arc groove 401 is arranged on both the front and rear ends of the annular rotating piece 4, and an annular tooth portion 402 is fixedly connected to one side of the annular rotating piece 4.

[0025] Furthermore, a first sealing slot 101 is provided in the middle of one side of the automatic cutting device 1 , and a second sealing slot 102 is provided in the middle of the other side of the automatic cutting device 1 . The first sealing slot 101 and the second sealing slot 102 are respectively connected to the two sides of the cutting groove 105 .

[0026] Furthermore, the first sealing slot 101 is sealedly connected to the air supply pipe 2, and the second sealing slot 102 is sealedly connected to the air delivery pipe 201. The air supply pipe 2 is used to supply air to the cutting groove 105 through the first sealing slot 101. The gas passes through the ventilation groove 301 on the baffle 3 inside the cutting groove 105 and then passes through the second sealing slot 102 to the air delivery pipe 201.

[0027] Furthermore, one end of the two support rods 303 passes through the annular sealing gasket 304 and the end surface of one side of the cutting groove 105 in turn, extends to the inside of the annular groove 106 and presses against one side of the annular rotating plate 4. The annular rotating plate 4 presses against the two support rods 303, so that the spoiler 3 is separated from the annular sealing gasket 304 and the spring 302 is compressed.

[0028] Furthermore, an annular limiting piece 403 is fixedly connected to one side of the annular tooth portion 402 inside the annular groove 106 , and the annular limiting piece 403 provides support for the annular rotating piece 4 .

[0029] Furthermore, a motor 5 is fixedly disposed in the middle of the front end of the annular groove 106 , and a gear 501 is fixedly connected to the output shaft of the motor 5 .

[0030] Furthermore, the gear 501 on the output shaft of the motor 5 is meshed with the teeth of the annular tooth portion 402, and the annular rotating plate 4 is driven by the motor 5 to rotate, so that the two arc grooves 401 on the annular rotating plate 4 rotate. When the two arc grooves 401 rotate to one side of the two support rods 303, the spring 302 pushes the baffle 3 to move, and the baffle 3 pushes the support rod 303 to insert into the arc groove 401. At the same time, the baffle 3 fits with the annular sealing gasket 304 to achieve the closure of the ventilation groove 301. The air supply pressure will make the baffle 3 and the annular sealing gasket 304 fit more closely to ensure that the gas delivery is cut off.

[0031] Working principle: During use, when the gas sensor 104 detects a gas leak, the control device 103 controls the motor 5 to drive the annular rotating plate 4 to rotate, so that the two arc grooves 401 on the annular rotating plate 4 rotate. When the two arc grooves 401 rotate to one side of the two support rods 303, the spring 302 pushes the baffle 3 to move, and the baffle 3 pushes the support rod 303 to insert into the arc groove 401. At the same time, the baffle 3 fits with the annular sealing gasket 304 to achieve the closure of the ventilation groove 301. The gas supply pressure will make the baffle 3 and the annular sealing gasket 304 fit more closely to ensure that the gas delivery is cut off.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A gas safety automatic shut-off device, comprising an automatic shut-off device (1), characterized in that: A cutting groove (105) is provided on one side of the middle portion of the automatic cutting device (1), an annular groove (106) is provided on one side of the cutting groove (105) inside the automatic cutting device (1), a control device (103) is fixedly connected to one side of the upper end of the automatic cutting device (1), a gas sensor (104) is fixedly connected to the control device (103), a baffle (3) is provided inside the cutting groove (105), and a plurality of ventilation grooves (106) are provided in an annular array on the baffle (3). 301), a spring (302) is provided on one side of the spoiler (3), the upper and lower ends of the other side of the spoiler (3) are fixedly connected to support rods (303), an annular sealing gasket (304) is fixedly connected to the end surface of one side of the cutting groove (105), an annular rotating piece (4) is provided on one side of the annular groove (106), the front and rear ends of the annular rotating piece (4) are both provided with arc grooves (401), and one side of the annular rotating piece (4) is fixedly connected to an annular tooth portion (402).

2. The gas safety automatic shut-off device according to claim 1 is characterized in that: A first sealing slot (101) is provided in the middle of one side of the automatic cutting device (1), and a second sealing slot (102) is provided in the middle of the other side of the automatic cutting device (1), wherein the first sealing slot (101) and the second sealing slot (102) are respectively connected to two sides of the cutting slot (105).

3. The gas safety automatic shut-off device according to claim 2 is characterized in that: The first sealing slot (101) is sealingly connected to an air supply pipe (2), and the second sealing slot (102) is sealingly connected to an air delivery pipe (201).

4. The gas safety automatic shut-off device according to claim 1 is characterized in that: One end of each of the two support rods (303) passes through the annular sealing gasket (304) and one end surface of the cutting groove (105) in sequence, extends to the inside of the annular groove (106) and abuts against one side of the annular rotating piece (4).

5. The gas safety automatic shut-off device according to claim 1 is characterized in that: An annular limiting piece (403) is fixedly connected to one side of the annular tooth portion (402) inside the annular groove (106).

6. The gas safety automatic shut-off device according to claim 1 is characterized in that: A motor (5) is fixedly arranged in the middle of the front end of the annular groove (106), and a gear (501) is fixedly connected to the output shaft of the motor (5).

7. The gas safety automatic shut-off device according to claim 6 is characterized in that: The gear (501) on the output shaft of the motor (5) is meshedly connected with the teeth of the annular teeth (402).

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