Emergency closing mechanism of electric gas stop valve

Abstract

The utility model relates to the technical field of gas cut-off valves, and discloses an emergency closing mechanism of an electric gas cut-off valve, which comprises a main pipeline and an execution piece shell, a gas outlet and a gas inlet are respectively arranged on the left side and the right side of the main pipeline, a valve plate is rotatably connected inside the main pipeline, and a valve rod is fixedly mounted at the upper end of the valve plate and comprises an upper half section and a lower half section. An electric execution piece is arranged in the execution piece shell and installed on the valve rod, a support is installed between the main pipeline and the execution piece shell, and an emergency closing assembly is arranged in the support and arranged in the middle of the valve rod. According to the stop valve, under the condition that the stop valve is powered off, gas in the soft ring is emptied, the limiting sleeve freely slides, then the clamping sleeve and the limiting sleeve can relatively rotate, rotating force is provided for the clamping sleeve, then the valve plate can be driven to rotate in a main pipeline, and under the conditions that blockage or gas circulation is conducted according to needs, normal use is guaranteed, the safety of the valve plate is guaranteed. And emergency requirements can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of gas cut-off valves, in particular to an emergency closing mechanism for an electric gas cut-off valve. Background Art

[0002] Gas stoves are common kitchen tools in modern households. They mainly promote combustion by supplying air to the gap between the stove body and the upper cover to supplement the amount of air during combustion. An automatic shut-off valve is usually installed between the common gas stoves and gas tanks on the market. When the outside temperature rises or a fire occurs, the gas tank can stop supplying gas to the gas stove in time to avoid serious safety hazards.

[0003] The emergency shut-off valve is also called the safety shut-off valve. It means that in the event of an emergency, the valve will be quickly closed or opened to avoid accidents.

[0004] In the traditional cylinder-driven emergency shut-off valve, when the cylinder does not work or cannot work, it becomes particularly important to shut off the gas shut-off valve. The existing shut-off valve is inconvenient for emergency operation, which affects the use of the shut-off valve. In view of this, we propose an electric gas shut-off valve emergency closing mechanism. Utility Model Content

[0005] The purpose of the utility model is to provide an electric gas shut-off valve emergency closing mechanism to solve the problem that in the existing emergency shut-off valve driven by a gas cylinder mentioned in the background technology, when the cylinder does not work or cannot work, the shut-off of the gas shut-off valve becomes particularly important. The existing shut-off valve is inconvenient for emergency operation, which affects the use of the shut-off valve.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an emergency closing mechanism of an electric gas shut-off valve, comprising a main pipeline and an actuator housing, wherein an air outlet and an air inlet are respectively arranged on the left and right sides of the main pipeline, a valve plate is rotatably connected inside the main pipeline, a valve stem is fixedly installed on the upper end of the valve plate, and the valve stem comprises an upper half and a lower half, an electric actuator is arranged inside the actuator housing, the electric actuator and the valve stem are installed, a support is installed between the main pipeline and the actuator housing, an emergency closing component is arranged inside the support, and the emergency closing component is arranged in the middle of the valve stem;

[0007] The emergency closing assembly comprises a clamping sleeve, a limiting sleeve and a fixing sleeve, wherein the fixing sleeve and the clamping sleeve are fixedly mounted on the upper section and the lower section respectively, the limiting sleeve is movably sleeved on the upper section, and the limiting sleeve is arranged between the clamping sleeve and the fixing sleeve, a limiting block is arranged in an annular shape on the inner side of the limiting sleeve, a guide block is arranged above the limiting block, a clamping block 2 is arranged in an annular shape on the outer side of the limiting sleeve, a sliding groove 2 for clamping the clamping block 2 is arranged in an annular shape on the fixing sleeve, a clamping block 1 is arranged in an annular shape on the outer side of the clamping sleeve, and a sliding groove 1 for clamping the clamping block 1 is opened in an annular shape on the limiting sleeve;

[0008] A soft ring is arranged between the limiting sleeve and the fixing sleeve, and an air pipe is arranged inside the main pipeline. The air pipe passes through the upper half and is communicated with the inside of the soft ring.

[0009] Preferably, the inner diameter of the fixing sleeve is equal to the outer diameter of the limiting sleeve, and the centers of the fixing sleeve and the limiting sleeve are collinear.

[0010] Preferably, a hole groove for inserting the guide block is provided on the clamping block 1, and the number of the clamping block 1, the limiting block and the guide block is equal.

[0011] Preferably, the first clamping block and the limiting block are movably fitted together.

[0012] Preferably, the valve stem and the center line of the main pipeline are perpendicular to each other, and the valve stem is rotatably connected to the support.

[0013] Preferably, a blocking cap is threadedly connected to the outer end of the trachea.

[0014] Preferably, the trachea is in a "Z" shape, and the inside of the trachea is a through hole.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The emergency closing mechanism of the electric gas shut-off valve is provided with an emergency closing component. In the initial state, gas is filled into the soft ring through the air pipe, so that the soft ring is filled, and then the limit sleeve moves from top to bottom along the upper half, and then the limit sleeve is inserted into the clamping sleeve, so that the guide block is inserted into the clamping block, so that the limit sleeve and the clamping block will not rotate relative to each other, further ensuring that the electric actuator can stably drive the valve stem to rotate, and then drive the valve plate to rotate inside the main pipeline, blocking or flowing gas as needed; and in case of emergency (such as power failure, the electric actuator stops working), the plugging cap is removed to exhaust the air inside the soft ring, and the limit sleeve is manually slid upwards, so that the guide block slides from the hole groove of the clamping block, at this time, the clamping sleeve and the limit sleeve can rotate relative to each other, at this time, the lower half of the valve stem is rotated, so that the valve plate can rotate a certain angle inside the main pipeline 1, and the gas can be blocked or circulated in an emergency. In summary, the utility model can, when the power of the cut-off valve is cut off, by exhausting the gas inside the soft ring, the limit sleeve can slide freely, so that the clamping sleeve and the limit sleeve can produce relative rotation, and provide rotational force to the clamping sleeve, which can drive the valve plate to rotate inside the main pipeline, block or circulate gas as needed, and ensure normal use. It can also be used for emergency needs, and is worthy of popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of a half-section structure of the utility model;

[0019] Figure 3 For the utility model Figure 2 The enlarged view of M;

[0020] Figure 4 This is a schematic diagram of the limit sleeve structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the clamping sleeve of the utility model.

[0022] In the figure: 1. main pipeline; 2. air inlet; 3. air outlet; 4. actuator housing; 41. electric actuator; 5. support; 6. valve plate; 7. emergency closing assembly; 71. clamping sleeve; 72. clamping block 1; 73. limiting sleeve; 74. clamping block 2; 75. limiting block; 76. guide block; 77. fixing sleeve; 78. air pipe; 79. soft ring; 8. valve stem. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example: See Figure 1-5 The utility model provides a technical solution: an emergency closing mechanism for an electric gas shut-off valve, which is mainly aimed at the existing emergency shut-off valve driven by a gas cylinder. When the cylinder does not work or cannot work, it becomes particularly important to shut off the gas shut-off valve. The existing shut-off valve is inconvenient for emergency operation, which affects the use of the shut-off valve. The specific solution is as follows: it includes a main pipeline 1 and an actuator housing 4, and an air outlet 3 and an air inlet 2 are respectively provided on the left and right sides of the main pipeline 1, and the air inlet 2 and the air outlet 3 are connected to the gas pipe of the gas. A valve plate 6 is rotatably connected inside the main pipeline 1, and a valve stem 8 is fixedly installed on the upper end of the valve plate 6.

[0025] See also Figure 1 and Figure 2 , wherein the valve stem 8 includes an upper half and a lower half, and the upper half and the lower half are arranged at intervals. An electric actuator 41 is arranged inside the actuator housing 4, and the electric actuator 41 and the valve stem 8 are installed. The electric actuator 41 is connected to the control switch through a wire. After the electric actuator 41 works, the valve stem 8 can be rotated, thereby driving the valve plate 6 to rotate inside the main pipeline 1, and the main pipeline 1 can cut off the gas flow as needed.

[0026] Furthermore, a support 5 is installed between the main pipeline 1 and the actuator housing 4. The support 5, the main pipeline 1 and the actuator housing 4 are connected by screws. The valve stem 8 and the center line of the main pipeline 1 are perpendicular to each other, and the valve stem 8 is rotatably connected to the support 5. An emergency closing component 7 is arranged inside the support 5, and the emergency closing component 7 is arranged in the middle of the valve stem 8;

[0027] See also Figure 2 and Figure 3The emergency closing assembly 7 includes a clamping sleeve 71, a limiting sleeve 73 and a fixing sleeve 77. The inner diameter of the fixing sleeve 77 is equal to the outer diameter of the limiting sleeve 73, and the centers of the fixing sleeve 77 and the limiting sleeve 73 are collinear. The fixing sleeve 77 and the clamping sleeve 71 are fixedly mounted on the upper half and the lower half respectively. The limiting sleeve 73 is movably sleeved on the upper half, and the limiting sleeve 73 is arranged between the clamping sleeve 71 and the fixing sleeve 77. A limiting block 75 is arranged in an annular shape on the inner side of the limiting sleeve 73, and a guide block 76 is arranged above the limiting block 75. A second clamping block 74 is arranged in an annular shape on the outer side of the limiting sleeve 73. A second slide groove for clamping the second clamping block 74 is arranged in an annular shape on the fixing sleeve 77. A first clamping block 72 is arranged in an annular shape on the outer side of the clamping sleeve 71, and the first clamping block 72 and the limiting block 75 are movably fitted. The limiting sleeve 73 is annular and has a sliding groove for the clamping block 72; the clamping block 72 is provided with a hole groove for the guide block 76 to be inserted, and the number of the clamping block 72, the limiting block 75 and the guide block 76 is equal.

[0028] A soft ring 79 is arranged between the limiting sleeve 73 and the fixing sleeve 77, and an air pipe 78 is arranged inside the main pipeline 1. The air pipe 78 passes through the upper half and communicates with the inside of the soft ring 79. A plugging cap is threadedly connected to the outer end of the air pipe 78. The air pipe 78 is in a "Z" shape, and the inside of the air pipe 78 is a through hole. The locking nut 76 is pressed against the locking nut 71 and the locking nut 78 is pressed against the locking nut 71, so that the locking nut 76 is pressed against the locking nut 71. When the locking nut 76 is pressed against the locking nut 71, the locking nut 76 is pressed against the locking nut 71.

[0029] Working principle: The emergency closing mechanism of the electric gas shut-off valve performs the following operations before the electric actuator 41 is powered on. By removing the plugging cap, gas is introduced into the air pipe 78 to fill the soft ring 79, so that the limiting sleeve 73 moves from top to bottom along the upper half, so that the limiting sleeve 73 is inserted into the clamping sleeve 71, and the guide block 76 is inserted into the clamping block 1 72, so that the limiting sleeve 73 and the clamping block 1 72 will not rotate relative to each other, further ensuring that the electric actuator 41 can stably drive the valve stem 8 to rotate, and then drive the valve plate 6 to rotate inside the main pipeline 1, blocking or flowing gas as needed;

[0030] When the electric actuator 41 is not working, the air inside the soft ring 79 can be emptied by removing the blocking cap, and the limiting sleeve 73 can be manually slid upward to allow the guide block 76 to slide from the hole groove of the clamping block 72. At this time, the clamping sleeve 71 and the limiting sleeve 73 can produce relative rotation. At this time, the lower half of the valve stem 8 can be rotated to make the valve plate 6 rotate a certain angle inside the main pipeline 1, thereby realizing the blocking or circulation of gas in emergency situations.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An emergency closing mechanism for an electric gas shut-off valve, comprising a main pipeline (1) and an actuator housing (4), wherein a gas outlet (3) and a gas inlet (2) are respectively arranged on the left and right sides of the main pipeline (1), and characterized in that: A valve plate (6) is rotatably connected inside the main pipeline (1), a valve stem (8) is fixedly mounted on the upper end of the valve plate (6), the valve stem (8) comprising an upper half and a lower half, an electric actuator (41) is arranged inside the actuator housing (4), the electric actuator (41) and the valve stem (8) are mounted, a support (5) is installed between the main pipeline (1) and the actuator housing (4), an emergency closing component (7) is arranged inside the support (5), and the emergency closing component (7) is arranged in the middle of the valve stem (8); The emergency closing assembly (7) comprises a snap-fit ​​sleeve (71), a limiting sleeve (73) and a fixing sleeve (77); the fixing sleeve (77) and the snap-fit ​​sleeve (71) are fixedly mounted on the upper half and the lower half respectively; the limiting sleeve (73) is movably sleeved on the upper half, and the limiting sleeve (73) is arranged between the snap-fit ​​sleeve (71) and the fixing sleeve (77); a limiting block (75) is arranged in an annular shape on the inner side surface of the limiting sleeve (73); a guide block (76) is arranged above the limiting block (75); a second clamping block (74) is arranged in an annular shape on the outer side of the limiting sleeve (73); a second slide groove for clamping the second clamping block (74) is arranged in an annular shape on the fixing sleeve (77); a first clamping block (72) is arranged in an annular shape on the outer side of the snap-fit ​​sleeve (71); and a first slide groove for clamping the first clamping block (72) is opened in an annular shape on the limiting sleeve (73); A soft ring (79) is provided between the limiting sleeve (73) and the fixing sleeve (77), and an air pipe (78) is provided inside the main pipeline (1). The air pipe (78) passes through the upper half and is in communication with the inside of the soft ring (79).

2. The electric gas shut-off valve emergency closing mechanism according to claim 1 is characterized in that: The inner diameter of the fixing sleeve (77) is equal to the outer diameter of the limiting sleeve (73), and the centers of the fixing sleeve (77) and the limiting sleeve (73) are collinear.

3. The electric gas shut-off valve emergency closing mechanism according to claim 1 is characterized in that: The clamping block (72) is provided with a hole slot for inserting the guide block (76), and the clamping block (72), the limit block (75) and the guide block (76) are equal in number.

4. The electric gas shut-off valve emergency closing mechanism according to claim 1, characterized in that: The first clamping block (72) and the limiting block (75) are movably fitted together.

5. The electric gas shut-off valve emergency closing mechanism according to claim 1 is characterized in that: The valve stem (8) and the center line of the main pipeline (1) are perpendicular to each other, and the valve stem (8) is rotatably connected to the support (5).

6. The electric gas shut-off valve emergency closing mechanism according to claim 1, characterized in that: The outer end of the air pipe (78) is threadedly connected with a plug cap.

7. The electric gas shut-off valve emergency closing mechanism according to claim 1, characterized in that: The air pipe (78) is in a "Z" shape, and the interior of the air pipe (78) is a through hole.

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