Simple safety valve

Abstract

The utility model relates to the technical field of gas safety valves, and discloses a simple safety valve which comprises a valve body, a valve cover, a valve element, a rotating shaft, an elastic reset piece, an electromagnetic valve assembly, an ejector rod and a gas outlet pipe assembly. The valve body is provided with an air inlet, a valve element cavity and a ventilation cavity. The distance between the central axis of the air inlet and the end face of the valve cover is L; the distance L is 23 to 33 mm; the air outlet pipe assembly comprises a first air outlet pipe section; the distance between the central axis of the air inlet and the central axis of the first air outlet pipe section is D, and the distance D ranges from 10 mm to 18 mm. The simple safety valve has the advantages of being compact in structure and small in size design, the size range of key components is accurately controlled, the design layout is optimized, the compactness of the structure is guaranteed, and the situation that the structure is unstable and the size is too large due to the fact that the distance is too long is avoided. Meanwhile, factors such as manufacturing cost and installation convenience are fully considered in determination of the distance ranges, so that the safety valve has better applicability in practical application.

Description

Technical Field

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

[0002] With the widespread application of gas equipment, the performance and structure of gas safety valves, as important safety devices, have attracted increasing attention. Traditional gas safety valves often have problems such as complex structure and large size, which not only increases the manufacturing cost, but also limits their application in occasions with limited space. For example, a Chinese patent with the patent number CN220646878U discloses a safety gas valve, including a valve body, a rotatable main valve core is arranged in the valve cavity of the valve body, an air inlet channel, an air outlet channel and a safety channel are arranged on the valve body, a solenoid valve is arranged in the safety channel, and the solenoid valve includes a movable safety valve core; a rotating shaft is connected to the valve body, a pressure cover is arranged on the rotating shaft, a push structure is arranged between the pressure cover and the safety valve core, and the rotating shaft moves up and down and rotates relative to the valve body; the rotating shaft moves downward to drive the pressure cover and the push structure to push the safety valve core forward, and after the safety valve core moves forward, the safety channel and the air outlet channel are interconnected, a valve core through hole is arranged on the main valve core, the rotating shaft moves downward to connect with the main valve core, the rotating shaft drives the main valve core to rotate, and after the main valve core rotates, the air inlet channel and the safety channel are interconnected through the valve core through hole. However, when the safety gas valve is used in combination, the overall structure is complex and the volume is large, so it cannot be used in occasions with limited space, which is easy to increase the manufacturing cost. Utility Model Content

[0003] The utility model aims to overcome the problems existing in the combination of traditional safety valves and provide a simple safety valve.

[0004] In order to achieve the above purpose, the utility model adopts the following scheme:

[0005] A simple safety valve, comprising a valve body, a valve cover, a valve core, a rotating shaft, an elastic reset member, a solenoid valve assembly, a push rod and an air outlet pipe assembly; the valve cover is adapted to be connected to the rear end of the valve body; the valve body is provided with an air inlet, a valve core cavity and a ventilation cavity; the valve core is rotatably adapted to be installed in the valve core cavity and is connected to the ventilation cavity, and can be connected to the air inlet; the distance from the central axis of the air inlet to the end face of the valve cover is L; the distance L is 23-33 mm; the solenoid valve assembly is installed in the ventilation cavity and is used to open or close the valve core; the air outlet pipe assembly is connected to the ventilation cavity;

[0006] The air outlet pipe assembly includes a first air outlet pipe section; the distance between the central axis of the air inlet and the central axis of the first air outlet pipe section is D, and the distance D is 10-18 mm.

[0007] Furthermore, the distance L is 25-30 mm; and the distance D is 15-18 mm.

[0008] Furthermore, the air outlet pipe assembly also includes a second air outlet pipe section and an ignition nozzle; one end of the second air outlet pipe section is connected to the first air outlet pipe section, and the other end is adapted to be installed with the ignition nozzle.

[0009] Furthermore, the central axis of the second air outlet pipe section is parallel to the central axis of the valve body; the first air outlet pipe section is perpendicular to the second air outlet pipe section to form an L-shaped structure.

[0010] Furthermore, an inspection port is provided at one end of the first air outlet pipe section away from the valve body; and a screw head cover adapted to be connected to the inspection port is provided on the first air outlet pipe section.

[0011] Furthermore, the front end of the second air outlet pipe section is located behind the front end of the valve body.

[0012] Furthermore, the front end of the valve body is pressed and fixed to the solenoid valve assembly on the front end of the valve body by a nut pressing head.

[0013] Furthermore, a card-embedded groove is provided on the rear end of the valve core; a card-embedded head is provided on the front end of the rotating shaft, which can be adapted to slide and be embedded in the card-embedded groove; a guide rod hole is provided on the bottom of the card-embedded groove, which is connected with the inner cavity of the valve body and can be used for the push rod to move and seal through; the rear end of the push rod is located in the card-embedded groove and can contact the card-embedded head; the front end of the push rod can move through the guide rod hole and the inner cavity of the valve core to connect with the solenoid valve assembly;

[0014] The rotating shaft can be rotatably mounted on the valve cover and can be moved closer to or away from the valve core; the locking head can reciprocate relative to the valve core in the locking groove and can contact the rear end of the push rod; the elastic reset member is connected between the locking head and the rear end of the valve core;

[0015] When the push rod moves toward the solenoid valve under the moving pressure of the clamping head, the front end of the push rod presses the solenoid valve assembly to trigger the solenoid valve assembly to open the valve core.

[0016] Furthermore, the rotating shaft is made by an integrated molding process.

[0017] Furthermore, the embedded head cover has a limit plate; the limit plate includes a limit pressure plate and a positioning plate connected to the limit pressure plate; the valve cover is provided with a positioning groove and a rotation limit groove which is communicated with the positioning groove and located in front of the positioning groove; the positioning plate is adapted to fit with the positioning groove and slidably cooperates with the rotation limit groove.

[0018] Compared with the existing technology, the utility model has the following advantages:

[0019] The utility model combines a valve body, a valve cover, a valve core, a rotating shaft, an elastic reset member, a solenoid valve assembly, a push rod, a solenoid valve assembly and an air outlet pipe assembly, reasonably designs the distance range from the central axis of the air inlet to the end face of the valve cover, and the distance range between the central axis of the air inlet and the central axis of the first air outlet pipe section, and accurately controls the size range of key components, thereby reasonably limiting the size of structures such as the valve body, the valve cover, the valve core, the rotating shaft, the elastic reset member, the solenoid valve assembly, the push rod, the solenoid valve assembly and the air outlet pipe assembly, optimizing the design layout, so that the simple safety valve has the characteristics of compact structure and miniaturized design, which not only ensures the compactness of the simple safety valve, but also avoids structural instability and excessive volume caused by too long distance. At the same time, the determination of these distance ranges also fully considers factors such as manufacturing cost and installation convenience, so that the safety valve has better applicability in practical applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the simple safety valve of the utility model.

[0022] Figure 2 It is a schematic diagram of the exploded three-dimensional structure of the simple safety valve of the utility model.

[0023] Figure 3 It is a structural schematic diagram of a simple safety valve of the utility model at one angle.

[0024] Figure 4 yes Figure 3 A schematic cross-sectional view in the AA direction is shown.

[0025] Figure 5 It is a three-dimensional structural schematic diagram of the valve cover of the utility model.

[0026] The figure includes:

[0027] Valve body 1, air inlet 11, valve core cavity 12, ventilation cavity 13, valve cover 2, positioning groove 21, rotation limit groove 22, valve core 3, embedded slide groove 31, guide rod hole 32, rotating shaft 4, embedded head 41, elastic reset part 5, solenoid valve assembly 6, push rod 7, air outlet pipe assembly 8, first air outlet pipe section 81, inspection port 811, second air outlet pipe section 82, ignition nozzle 83, screw head cover 9, nut press head 10, limit plate 20, limit pressing piece 201, positioning piece 202. DETAILED DESCRIPTION

[0028] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] like Figures 1 to 5 As shown, a simple safety valve comprises a valve body 1, a valve cover 2, a valve core 3, a rotating shaft 4, an elastic reset member 5, a solenoid valve assembly 6, a push rod 7 and an air outlet pipe assembly 8; the valve cover 2 is adapted to be connected to the rear end of the valve body 1; the valve body 1 is provided with an air inlet 11, a valve core cavity 12 and a ventilation cavity 13; the valve core 3 is rotatably adapted to be installed in the valve core cavity 12 and is connected to the ventilation cavity 13, and can be connected to the air inlet 11; the distance from the central axis of the air inlet 11 to the end face of the valve cover 2 is L; the distance L is 23-33mm; the simple safety valve also comprises a solenoid valve assembly 6 installed in the ventilation cavity 13 and used to open or close the valve core 3; the air outlet pipe assembly 8 is connected to the ventilation cavity 13; the air outlet pipe assembly 8 comprises a first air outlet pipe section 81; the distance between the central axis of the air inlet 11 and the central axis of the first air outlet pipe section 81 is D, and the distance D is 10-18mm.

[0030] The simple safety valve is provided with a valve body 1, a valve cover 2, a valve core 3, a rotating shaft 4, an elastic reset member 5, a solenoid valve assembly 6, a push rod 7, a solenoid valve assembly 6 and an air outlet pipe assembly 8, and the distance range from the central axis of the air inlet 11 to the end face of the valve cover 2 and the distance range between the central axis of the air inlet 11 and the central axis of the first air outlet pipe section 81 are reasonably designed. By accurately controlling the size range of key components, the size of the valve body 1, the valve cover 2, the valve core 3, the rotating shaft 4, the elastic reset member 5, the solenoid valve assembly 6, the push rod 7, the solenoid valve assembly 6 and the air outlet pipe assembly 8 are reasonably limited, and the design layout is optimized, so that the simple safety valve has the characteristics of compact structure and miniaturized design, which not only ensures the compactness of the simple safety valve, but also avoids the structural instability and excessive volume caused by the long distance. At the same time, the determination of these distance ranges also fully considers factors such as manufacturing cost and installation convenience, so that the safety valve has better applicability in practical applications.

[0031] Preferably, the distance L is 25-30mm, specifically, the distance L can be 25mm, 28mm, 30mm; the distance D is 15-18mm, specifically, the distance D can be 16mm, 16.81mm, 18mm. By optimizing the range of distance L and distance D in this way, the compactness of the simple safety valve is ensured, and the structural instability and excessive volume caused by too long distance are avoided, thereby achieving the effect of compact structure and small volume; at the same time, the determination of the distance range also fully considers factors such as manufacturing cost and installation convenience, so that the safety valve has better applicability in practical applications.

[0032] In this embodiment, the air outlet pipe assembly 8 includes a first air outlet pipe section 81, a second air outlet pipe section 82 and an ignition nozzle 83; one end of the second air outlet pipe section 82 is connected to the first air outlet pipe section 81, and the other end is adapted to be installed with the ignition nozzle 83. The central axis of the second air outlet pipe section 82 is parallel to the central axis of the valve body 1; the first air outlet pipe section 81 and the second air outlet pipe section 82 are perpendicular to form an L-shaped structure. The air outlet pipe assembly 8 is formed by arranging the first air outlet pipe section 81, the second air outlet pipe section 82 and the ignition nozzle 83, and the first air outlet pipe section 81 and the second air outlet pipe section 82 are used to guide the gas, and ignition is achieved at the ignition nozzle 83. By setting the position range of the first air outlet pipe section 81 and the air inlet 11, and the central axis of the second air outlet pipe section 82 being parallel to the central axis of the valve body 1, the first air outlet pipe section 81 and the second air outlet pipe section 82 form an L-shaped structure, which not only effectively optimizes the layout and size of the air outlet pipe assembly 8 to ensure the stable flow efficiency of the gas and reduce energy consumption, but also further improves the space utilization rate of the simple safety valve, making the overall structure more compact, so that the simple safety valve has the characteristics of compact structure and miniaturized design, which not only ensures the compactness of the simple safety valve, but also avoids structural instability and excessive volume due to excessive distance.

[0033] In order to facilitate the inspection of the first air outlet pipe section 81 and timely clean the pipe section, an inspection port 811 is provided at one end of the first air outlet pipe section 81 away from the valve body 1; a screw head cover 9 adapted to be connected to the inspection port 811 is provided on the first air outlet pipe section 81. The screw head cover 9 can be adapted to be embedded in the inspection port 811, or connected to the inspection port 811 by a threaded connection.

[0034] In order to achieve a compact structure, small volume and small occupied space, the front end of the second air outlet pipe section 82 is located behind the front end of the valve body 1. The second air outlet pipe section 82 is designed in this way to avoid structural instability and excessive volume caused by the second air outlet pipe section 82 being too long, thereby achieving the characteristics of the simple safety valve having a compact structure, small volume and small occupied space.

[0035] In order to facilitate the disassembly and assembly of the solenoid valve assembly 6 and achieve the effect of simple structural installation, the front end of the valve body 1 is pressed and fixed to the front end of the valve body 1 by a nut press head 10 .

[0036] Another convenience, in this embodiment, the simple safety valve is specifically as follows: an embedding groove 31 is provided on the rear end of the valve core 3; an embedding head 41 is provided on the front end of the rotating shaft 4, which can be adapted to slide and embed into the embedding groove 31; a guide rod hole 32 is provided on the bottom of the embedding groove 31, which is connected to the inner cavity of the valve body 1 and can be used for the push rod 7 to move and seal through; the rear end of the push rod 7 is located in the embedding groove 31 and can contact the embedding head 41; the front end of the push rod 7 can move through the guide rod hole 32, and the inner cavity of the valve core 3 can be connected to the solenoid valve assembly 6; the rotating shaft 4 can be rotatably sleeved on the valve cover 2 and can move close to or away from the valve core 3; the embedding head 41 can reciprocate relative to the valve core 3 in the embedding groove 31 and can contact the rear end of the push rod 7; the elastic reset member 5 is connected between the embedding head 41 and the rear end of the valve core 3; the elastic reset member 5 is preferably a spring. When the push rod 7 moves toward the solenoid valve under the moving pressure of the clamping head 41, the front end of the push rod 7 presses the solenoid valve assembly 6 to trigger the solenoid valve assembly 6 to open the valve core 3. Through the coordinated use of the solenoid valve assembly 6 and the push rod 7, a rapid response and effective control of the valve core 3 are achieved. When the gas source needs to be closed, the push rod 7 is operated to press the solenoid valve assembly 6, triggering the solenoid valve assembly 6 to close the valve core 3, thereby cutting off the gas source. At the same time, the setting of the elastic reset member 5 ensures that the shaft 4 can automatically return to the initial state later, which is convenient for next use. The clamping head 41 is sleeved with a limit plate 20; the limit plate 20 includes a limit pressing sheet 201 and a positioning sheet 202 connected to the limit pressing sheet 201; the valve cover 2 is provided with a positioning groove 21 and a rotation limit groove 22 that is connected to the positioning groove 21 and is located in front of the positioning groove 21; the positioning sheet 202 is adapted to fit with the positioning groove 21 and slides with the rotation limit groove 22. The connection relationship and position relationship between the valve body 1, valve cover 2, valve core 3, rotating shaft 4, elastic reset part 5, solenoid valve assembly 6, push rod 7, solenoid valve assembly 6, air outlet pipe assembly 8 and limit plate 20 are designed in this way, which effectively ensures the stable flow efficiency of gas through the layout and size of the simple safety valve, reduces energy consumption, and further improves the space utilization rate of the simple safety valve, making the overall structure more compact, so that the simple safety valve can be conveniently installed and easy to operate. At the same time, it has the advantages of excellent safety performance and is suitable for the safety protection needs of various gas equipment.

[0037] In order to make the structure of the rotating shaft 4 more stable, the rotating shaft 4 is made by an integrated molding process. Preferably, the rotating shaft 4 is made by a cold heading integrated molding process. The rotating shaft 4 is made by a cold heading integrated molding process, and the structure is more compact and firm, thereby greatly improving the overall strength of the structure. Secondly, the cold heading integrated molding process is also efficient and environmentally friendly. Compared with traditional welding or bolt connection methods, the cold heading integrated molding process does not require complicated welding operations or bolt tightening, which greatly simplifies the production process and improves production efficiency. At the same time, this process also reduces the harmful gases and waste slag that may be generated during the welding process, which is more in line with the environmental protection requirements of modern industrial production. In addition, the rotating shaft 4 made by the cold heading integrated molding process also has high precision and stability.

[0038] The use process of the utility model is:

[0039] When it is necessary to open the gas source, the rotating shaft 4 is pressed to move in the direction of the valve core 3, and the limit plate 20 moves synchronously with the rotating shaft 4. The positioning piece 202 breaks away from the restriction of the positioning groove 21 and enters the rotating limit groove 22. The locking head 41 slides along the direction of the valve core 3 and is embedded in the locking groove 31. The elastic reset member 5 is compressed. At this time, the locking head 41 presses the push rod 7 to move through the guide rod hole 32 and the inner cavity of the valve core 3 to press the electromagnetic valve assembly 6, triggering the electromagnetic valve assembly 6 to open the valve core 3, so that the valve core 3 is connected to the ventilation cavity 13; then, the rotating shaft 4 is rotated according to the designed rotation angle, such as 45° or 90°, that is, the positioning piece 202 rotates in the rotating limit groove 22, so that the valve core 3 is connected to the air inlet 11, so that the gas can pass through the air inlet 11, the inner cavity of the valve core 3, and the ventilation cavity 13 in sequence, and finally flow out from the air outlet pipe assembly 8.

[0040] When it is necessary to shut off the air source, the shaft 4 first rotates back to the initial position, and the valve core 3 rotates synchronously with the shaft 4. The connection between the valve core 3 and the air inlet 11 is closed, and the positioning piece 202 corresponds to the position of the positioning groove 21. Under the action of the elastic reset member 5, the positioning piece 202 returns to the positioning groove 21, the shaft 4 is reset, and the engaging head 41 moves along the valve cover 2 in the engaging groove 31. At this time, the push rod 7 has no top pressure from the engaging head 41, and the solenoid valve pushes the push rod 7 to reset and close the valve core 3 at the same time, so that the valve core 3 and the ventilation cavity 13 are closed, between the air inlet 11 and the valve core 3, and between the solenoid valve assembly 6 and the valve core 3, thereby realizing double closure of the simple safety valve and achieving the effect of safe use.

[0041] In summary, the embodiment of the utility model provides a simple safety valve, wherein the simple safety valve achieves a compact structure and a small volume by limiting the size range of key components, and significantly improves its applicability in various application scenarios. Specifically, the utility model has the following significant effects:

[0042] 1. Compact structure: By accurately controlling the distance L from the central axis of the air inlet 11 to the end face of the valve cover 2 and the distance D between the central axis of the air inlet 11 and the central axis of the first air outlet pipe section 81, the compact design of the simple safety valve is achieved. This compact structure not only reduces the production cost, but also makes the simple safety valve easier to install and maintain.

[0043] Second, small size: Due to the compact structural design, the simple safety valve of the utility model achieves the minimum size while maintaining sufficient strength. This makes the simple safety valve easily adaptable to occasions with limited space, such as small kitchens or bathrooms.

[0044] 3. Reliable performance: Although the simple safety valve of the utility model is simpler and more compact in structure, its performance is not affected. Through reasonable structural layout and size control, the simple safety valve can still accurately monitor and control the flow and pressure of gas to ensure the safe operation of gas equipment.

[0045] 4. Wide application scope: Due to its compact structure, small size, reliable performance and other advantages, the simple safety valve of the utility model can be widely used in various gas equipment, such as gas stoves, gas water heaters, gas boilers, etc. Whether it is for household use or industrial application, it can play a good role.

[0046] 5. Reduce costs: By simplifying the structural design and limiting the size range, the simple safety valve of the utility model can reduce material consumption and processing difficulty during the manufacturing process, thereby effectively reducing production costs, which helps to promote the popularization and application of simple safety valves and improve the safety performance of gas equipment.

[0047] In summary, the simple safety valve of the utility model has significant advantages in structural design, volume, performance and application range, etc. By limiting the size range of key components, a compact structure and small volume are achieved, providing a strong guarantee for the safe operation of gas equipment.

[0048] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present application. These improvements and substitutions should also be regarded as the scope of protection of the present application.

Claims

1. A simple safety valve, comprising a valve body, a valve cover, a valve core, a rotating shaft, an elastic reset member, a solenoid valve assembly and a push rod; the valve cover is adapted to be connected to the rear end of the valve body; the valve body is provided with an air inlet, a valve core cavity and a vent cavity; the valve core is rotatably adapted to be installed in the valve core cavity and is connected to the vent cavity and can be connected to the air inlet; characterized in that: The distance from the central axis of the air inlet to the end surface of the valve cover is L; the distance L is 23-33 mm; the simple safety valve also includes an air outlet pipe assembly connected to the ventilation cavity; The air outlet pipe assembly includes a first air outlet pipe section; the distance between the central axis of the air inlet and the central axis of the first air outlet pipe section is D, and the distance D is 10-18 mm.

2. The simple safety valve according to claim 1, characterized in that: The distance L is 25-30 mm; the distance D is 15-18 mm.

3. The simple safety valve according to claim 1 or 2, characterized in that: The air outlet pipe assembly also includes a second air outlet pipe section and an ignition nozzle; one end of the second air outlet pipe section is connected to the first air outlet pipe section, and the other end is adapted to be installed with the ignition nozzle.

4. The simple safety valve according to claim 3, characterized in that: The central axis of the second air outlet pipe section is parallel to the central axis of the valve body; the first air outlet pipe section is perpendicular to the second air outlet pipe section to form an L-shaped structure.

5. The simple safety valve according to claim 3, characterized in that: An inspection port is provided at one end of the first air outlet pipe section away from the valve body; a screw head cover adapted to be connected with the inspection port is provided on the first air outlet pipe section.

6. The simple safety valve according to claim 3, characterized in that: The front end of the second air outlet pipe section is located behind the front end of the valve body.

7. The simple safety valve according to claim 1, characterized in that: The front end of the valve body is pressed and fixed with the solenoid valve assembly on the front end of the valve body by a nut pressing head.

8. The simple safety valve according to claim 1, characterized in that: The rear end of the valve core is provided with an embedding groove; the front end of the rotating shaft is provided with an embedding head which can be adapted to slide and embed into the embedding groove; the groove bottom of the embedding groove is provided with a guide rod hole which is connected with the inner cavity of the valve body and can be used for the push rod to move and seal through; the rear end of the push rod is located in the embedding groove and can contact the embedding head; the front end of the push rod can move through the guide rod hole and the inner cavity of the valve core to connect with the solenoid valve assembly; The rotating shaft can be rotatably mounted on the valve cover and can be moved closer to or away from the valve core; the locking head can reciprocate relative to the valve core in the locking groove and can contact the rear end of the push rod; the elastic reset member is connected between the locking head and the rear end of the valve core; When the push rod moves toward the solenoid valve under the moving pressure of the clamping head, the front end of the push rod presses the solenoid valve assembly to trigger the solenoid valve assembly to open the valve core.

9. The simple safety valve according to claim 8, characterized in that: The rotating shaft is made by an integrated molding process.

10. The simple safety valve according to claim 8, characterized in that: The embedded head cover has a limit plate; the limit plate includes a limit pressure plate and a positioning plate connected to the limit pressure plate; a positioning groove and a rotation limit groove which is connected to the positioning groove and located in front of the positioning groove are provided in the valve cover; the positioning plate is adapted to fit in the positioning groove and slidably cooperates with the rotation limit groove.

Images