Gas safety valve

Abstract

The utility model discloses a gas safety valve which comprises a valve body, a valve rod is arranged at the top of the valve body, a fixing cylinder is arranged at the top of the valve body, the valve rod penetrates through the fixing cylinder, a rotating knob is connected to the position, located above the fixing cylinder, of the circumferential outer wall of the valve rod in a sliding mode, and a clamping groove is formed in the inner wall of the top of the rotating knob. The top end of the valve rod is fixedly connected with a protruding block matched with the clamping groove, the top of the fixing cylinder is provided with an elastic assembly used for supporting the rotating knob so that the rotating knob cannot move downwards under the action of gravity, and the top of the protruding block is provided with a stopping assembly used for limiting the rotating knob after the rotating knob moves downwards. According to the gas valve, children can be prevented from opening the valve unconsciously, the use safety of the gas valve is improved, the rotary knob can be stopped and limited, so that a user does not need to press the rotary knob all the time, and the use convenience of the gas valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel gas, in particular to a fuel gas safety valve. Background Art

[0002] The gas valve is a new type of safety supporting device for gas pipeline projects. It is used to cut off, connect and regulate the gas in the pipeline. It has good control characteristics and closing and sealing performance.

[0003] The gas valve is usually a ball valve that can be driven directly by hand. The handle used to drive the gas valve has no safety limit measures. The movement of the gas valve handle can be controlled at any time in a natural state. In a family with children or other natural persons with weak safety awareness, the safety valve may be accidentally touched, causing the safety valve to be in the open state, posing a potential hazard to the safe use of gas. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and provides a gas safety valve.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A gas safety valve comprises a valve body, a valve stem is provided on the top of the valve body, a fixing cylinder is provided on the top of the valve body, the valve stem passes through the fixing cylinder, a rotating knob is slidably connected to the circumferential outer wall of the valve stem at a position above the fixing cylinder, a slot is provided on the top inner wall of the rotating knob, a protrusion matched with the slot is fixedly connected to the top of the valve stem, an elastic component is provided on the top of the fixing cylinder to support the rotating knob so that the rotating knob will not move downward under the action of gravity, and a resisting component is provided on the top of the protrusion to limit the rotating knob after it moves downward.

[0007] As a further solution of the utility model, the elastic component includes a second fixing ring, the second fixing ring is fixedly connected to the top of the fixing cylinder, the valve stem passes through the second fixing ring, a circular notch is provided at the bottom of the rotating knob, a sliding groove connected to the circular notch is provided in the rotating knob, the second fixing ring passes through the circular notch and extends into the sliding groove, a first fixing ring is slidably connected in the sliding groove, and the first fixing ring is fixed to the second fixing ring, a plurality of springs are fixedly connected to the upper surface of the first fixing ring, and the top ends of the plurality of springs are fixedly connected to a support plate for supporting the rotating knob.

[0008] As a further solution of the utility model, a plurality of rolling grooves are provided on the upper surface of the support plate, and balls are rollingly connected in the plurality of rolling grooves.

[0009] As a further solution of the utility model, the resisting assembly includes a connecting rod, which is rotatably connected to the top of the protrusion, and the upper surface of the rotating knob is provided with a avoiding groove connected to the clamping groove, and the top end of the connecting rod extends into the avoiding groove and is fixedly connected with a clamping plate.

[0010] As a further solution of the utility model, a plurality of evenly distributed anti-slip pads are fixedly connected to the bottom of the card plate.

[0011] As a further solution of the present invention, the protrusion and the slot are both square.

[0012] The beneficial effects of the utility model are:

[0013] 1. Through the coordinated use of the protrusion and the slot, when the protrusion is inserted into the slot, the valve stem can be turned by turning the knob to open the valve. When the protrusion is disengaged from the slot, the valve stem cannot be turned and the valve cannot be opened. This can prevent children from opening the valve unconsciously, thereby improving the safety of the use of the gas valve.

[0014] 2. Through the setting of the resistance component, after the rotating knob is pressed and moved downward until the protrusion is fully engaged with the slot, the rotating knob can be resisted and limited by the resistance component, so that the user does not need to press the rotating knob all the time, thereby improving the convenience of using the gas valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional structural schematic diagram of a gas safety valve proposed by the utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of a rotating knob of a gas safety valve proposed by the utility model;

[0017] Figure 3 The utility model is a schematic diagram of an enlarged structure of a clamping plate of a gas safety valve.

[0018] In the figure: 1. Turning knob; 2. Valve body; 3. Fixing cylinder; 4. Slot; 5. Clamp plate; 6. Avoidance groove; 7. Connecting rod; 8. Ball; 9. Support plate; 10. Spring; 11. First fixing ring; 12. Circular notch; 13. Second fixing ring; 14. Slide groove; 15. Valve stem; 16. Bump; 17. Anti-slip pad. DETAILED DESCRIPTION

[0019] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence, so that the embodiments of the application described here, based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of this application.

[0020] Reference Figure 1-Figure 3 A gas safety valve comprises a valve body 2, a valve stem 15 is arranged on the top of the valve body 2, a fixed cylinder 3 is arranged on the top of the valve body 2, the valve stem 15 passes through the fixed cylinder 3, a rotating knob 1 is slidably connected to the position of the circumferential outer wall of the valve stem 15 above the fixed cylinder 3, a card slot 4 is arranged on the top inner wall of the rotating knob 1, a convex block 16 adapted to the card slot 4 is welded on the top of the valve stem 15, and the convex block 16 can be carded with the card slot 4, an elastic component for supporting the rotating knob 1 so that the rotating knob 1 will not move downward under the action of gravity is arranged on the top of the fixed cylinder 3, and a card slot 4 is arranged on the top of the convex block 16. After the rotating knob 1 moves downward, the resisting component is limited, and the rotating knob 1 is pressed to move downward along the valve stem 15. At this time, the protrusion 16 on the valve stem 15 will be inserted into the groove 4 inside the rotating knob 1. When the protrusion 16 is completely engaged with the groove 4, the valve stem 15 can be rotated by rotating the knob 1 to open the valve body 2. When the protrusion 16 is disengaged from the groove 4, the rotating knob 1 cannot drive the valve stem 15 to rotate, thereby failing to open the valve. This can prevent children from opening the valve unconsciously, thereby improving the safety of the gas valve.

[0021] In the utility model, the elastic component includes a second fixing ring 13, the second fixing ring 13 is welded to the top of the fixing cylinder 3, the valve stem 15 passes through the second fixing ring 13, a circular notch 12 is provided at the bottom of the rotating knob 1, a slide groove 14 connected to the circular notch 12 is provided in the rotating knob 1, the second fixing ring 13 passes through the circular notch 12 and extends into the slide groove 14, the slide groove 14 is slidably connected with the first fixing ring 11, and the first fixing ring 11 is fixed to the second fixing ring 13, a plurality of springs 10 are welded on the upper surface of the first fixing ring 11, and the tops of the plurality of springs 10 are welded with counter-rotating The support plate 9 supports the rotating knob 1. As the rotating knob 1 moves downward, the second fixing ring 13 drives the first fixing ring 11 to move upward relatively along the slide groove 14. The first fixing ring 11 squeezes the spring 10. When the use is completed, the rotating knob 1 moves upward under the action of the spring 10 to reset itself. A plurality of rolling grooves are provided on the upper surface of the support plate 9. Balls 8 are rollingly connected in the plurality of rolling grooves, and the balls 8 are in contact with the rotating knob 1. The rotating knob 1 causes the balls 8 to roll during the rotation process, thereby reducing the friction force of the rotating knob 1.

[0022] The resisting assembly includes a connecting rod 7, which is rotatably connected to the top of the protrusion 16. The upper surface of the rotating knob 1 is provided with an avoidance groove 6 connected to the slot 4. The top of the connecting rod 7 extends into the avoidance groove 6 and is welded with a card plate 5. The bottom of the card plate 5 is bonded with a plurality of evenly distributed anti-skid pads 17. When the protrusion 16 is completely engaged with the slot 4, the card plate 5 on the top of the connecting rod 7 will move out of the avoidance groove 6. At this time, the card plate 5 can be rotated through the connecting rod 7 so that the card plate 5 and the avoidance groove 6 are distributed in a cross shape to resist the rotating knob 1. Since the spring 10 is in an extruded state, it will apply an upward force to the rotating knob 1. At the same time, since the card plate 5 resists the rotating knob 1, the friction between the card plate 5 and the rotating knob 1 will be increased, so that the card plate 5 will not rotate easily. At this time, there is no need to press the rotating knob 1 all the time. The protrusion 16 and the slot 4 are both square.

[0023] Working principle: when it is needed, press and turn the knob 1 to move downward along the valve stem 15, at which time the protrusion 16 on the valve stem 15 will be inserted into the card slot 4 inside the rotating knob 1. At the same time, due to the downward movement of the rotating knob 1, the second fixing ring 13 will drive the first fixing ring 11 to move upward along the slide slot 14. The first fixing ring 11 will squeeze the spring 10. When the protrusion 16 is completely engaged with the card slot 4, the card plate 5 on the top of the connecting rod 7 will move out of the avoidance slot 6. At this time, the card plate 5 can be rotated through the connecting rod 7, so that the card plate 5 and the avoidance slot 6 are distributed in a cross shape to the rotating knob. 1 is resisted, and since the spring 10 is in an extruded state, an upward force is applied to the rotating knob 1. At the same time, since the card plate 5 resists the rotating knob 1, the friction between the card plate 5 and the rotating knob 1 is increased, so that the card plate 5 will not rotate easily. At this time, the valve stem 15 can be rotated by rotating the knob 1 to open the valve body 2. When the protrusion 16 is disengaged from the card slot 4, the rotating knob 1 cannot drive the valve stem 15 to rotate, so that the valve cannot be opened, thereby preventing children from opening the valve unconsciously and improving the safety of the gas valve.

[0024] The present invention has been described through the above-mentioned embodiments. Those skilled in the art will appreciate that the present invention is not limited to the above-mentioned embodiments, and more modifications may be made according to the teachings of the present invention. These modifications are all within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A gas safety valve, comprising a valve body (2), wherein a valve stem (15) is provided on the top of the valve body (2), characterized in that: A fixed cylinder (3) is provided at the top of the valve body (2), the valve stem (15) passes through the fixed cylinder (3), the circumferential outer wall of the valve stem (15) is slidably connected to a rotating knob (1) at a position above the fixed cylinder (3), a slot (4) is provided on the top inner wall of the rotating knob (1), a protrusion (16) matched with the slot (4) is fixedly connected to the top of the valve stem (15), an elastic component for supporting the rotating knob (1) so that the rotating knob (1) does not move downward under the action of gravity is provided at the top of the fixed cylinder (3), and a resisting component for limiting the rotating knob (1) after it moves downward is provided at the top of the protrusion (16).

2. A gas safety valve according to claim 1, characterized in that: The elastic component comprises a second fixing ring (13), the second fixing ring (13) is fixedly connected to the top of the fixing cylinder (3), the valve stem (15) passes through the second fixing ring (13), a circular notch (12) is provided at the bottom of the rotating knob (1), a sliding groove (14) connected to the circular notch (12) is provided in the rotating knob (1), the second fixing ring (13) passes through the circular notch (12) and extends into the sliding groove (14), a first fixing ring (11) is slidably connected in the sliding groove (14), and the first fixing ring (11) is fixed to the second fixing ring (13), a plurality of springs (10) are fixedly connected to the upper surface of the first fixing ring (11), and the top ends of the plurality of springs (10) are fixedly connected to a support plate (9) for supporting the rotating knob (1).

3. A gas safety valve according to claim 2, characterized in that: The upper surface of the support plate (9) is provided with a plurality of rolling grooves, and balls (8) are rollingly connected in the plurality of rolling grooves.

4. A gas safety valve according to claim 1, characterized in that: The resisting assembly comprises a connecting rod (7) which is rotatably connected to the top of the protrusion (16); the upper surface of the rotating knob (1) is provided with a avoiding groove (6) which is connected to the clamping groove (4); the top end of the connecting rod (7) extends into the avoiding groove (6) and is fixedly connected to a clamping plate (5).

5. A gas safety valve according to claim 4, characterized in that: A plurality of evenly distributed anti-slip pads (17) are fixedly connected to the bottom of the clamping plate (5).

6. A gas safety valve according to claim 1, characterized in that: The protrusion (16) and the slot (4) are both square.

Images