Gas burner leak-proof safety valve group

Abstract

The utility model relates to burner technical field, concretely is a kind of gas burner anti-leakage safety valve group, including first valve body and second valve body, first valve body and second valve body flange connection, the first valve body is equipped with the ball with hole in, the top of first valve body is equipped with fixed connection pipe, the top of fixed connection pipe is equipped with pressure pipe, pressure pipe is equipped with valve rod in, the bottom end of valve rod is connected with the ball with hole, the top of pressure pipe is equipped with the driving element for driving valve rod rotation, the outer wall of pressure pipe is equipped with the locking structure for locking valve rod. The gas burner anti-leakage safety valve group, the positioning rod of locking structure and the positioning groove of valve rod cooperate, realize mechanical locking after valve is closed, manually pull puller to remove lock to reopen again, completely avoid valve misopening due to misoperation or accidental touch, fundamentally eliminate gas secondary leakage hidden danger.

Description

Technical Field

[0001] This utility model relates to the field of burner technology, specifically to a gas burner anti-leakage safety valve assembly. Background Technology

[0002] With the continuous development of technology, smart heating systems have gradually become an important part of the modern heating industry. Smart heating systems utilize advanced technologies such as the Internet of Things, big data, and cloud computing to achieve intelligent management and precise control of heating equipment, which not only improves energy efficiency but also enhances heating comfort and safety. In smart heating systems, the gas burner is one of the core components, and its performance and safety directly affect the overall system's operation. However, gas burners pose certain safety hazards during use, such as gas leaks. Gas leaks not only waste energy but can also lead to serious accidents such as fires or explosions. Therefore, to ensure the safety of gas burners, leak-proof safety valve assemblies are installed on gas transmission pipelines.

[0003] Utility model patent CN223035784U discloses a leak-proof safety valve that solves the problem of dangerous operation of existing gas valves under low pressure. This leak-proof safety valve includes a gas valve body with an inlet pipe and an outlet pipe, an electromagnetic control valve on the gas valve body, and a mounting base at the bottom of the gas valve body. The gas valve body has a mounting cavity inside, and a control component is installed in the mounting cavity. An air diaphragm is located between the mounting base and the gas valve body, and the bottom of the control component abuts against the air diaphragm. The bottom of the gas valve body has an air passage hole, and a valve pin is installed on the air diaphragm. This utility model has the advantages of safe use and self-closing in case of leakage.

[0004] However, while the existing technical solution can achieve automatic valve closure, it lacks a locking structure after closure, which may lead to the valve being accidentally opened, thus causing the risk of secondary gas leakage. To solve this problem, we propose a gas burner anti-leakage safety valve assembly to further improve the safety performance of gas equipment. Utility Model Content

[0005] The purpose of this invention is to provide a gas burner leak-proof safety valve assembly to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A gas burner anti-leakage safety valve assembly includes a first valve body and a second valve body. The first valve body and the second valve body are flanged together to form a sealed cavity, which serves as the main structure of the gas passage. The first valve body is provided with a perforated ball, which controls the gas flow by rotation. The internal through hole cooperates with the valve seat to form a channel. Both the first valve body and the second valve body are provided with valve seats. The outer wall of the perforated ball is tightly fitted with the inner walls of the two valve seats to prevent gas leakage. The top of the first valve body is provided with a fixed connecting pipe, which is used to connect the first valve body and the pressure pipe to ensure structural stability. The top of the fixed connecting pipe is provided with a pressure pipe, which provides installation space for the valve stem and guides its movement. The pressure pipe contains the valve stem, and the fixed connecting pipe contains packing for sealing and positioning the valve stem. The pressure pipe and the fixed connecting pipe can prevent the valve stem from slipping. The bottom end of the valve stem is engaged with a perforated ball. The valve stem drives the perforated ball to rotate by rotation, thereby controlling the opening and closing of the gas passage. The top of the pressure tube is equipped with a driving component for rotating the valve stem. The driving component provides power through gear transmission to realize the automatic opening and closing of the valve. The outer wall of the pressure tube is equipped with a locking structure for locking the valve stem. The locking structure prevents secondary leakage caused by misoperation of the valve stem.

[0007] Preferably, the driving component includes a rectangular box fixedly connected to the top of the pressure tube, the top of the rectangular box is provided with a box cover, the box cover closes the rectangular box and supports the motor, and the top end of the valve stem passes through the bottom of the rectangular box and is rotatably connected to the bottom of the box cover.

[0008] Preferably, a motor is provided at the bottom of the box cover and near the right side. The motor serves as a power source to drive the drive gear to rotate. The output shaft of the motor is coaxially connected to the drive gear, and the drive gear meshes with the driven gear to transmit power to the valve stem.

[0009] Preferably, a driven gear is provided on the outer wall of the valve stem near the top end. The driven gear meshes with the driving gear to drive the valve stem, and the driven gear converts the rotational motion of the motor into the rotation of the valve stem.

[0010] Preferably, a gas leak sensor is provided at the bottom of the rectangular box. The gas leak sensor detects the gas concentration in real time and triggers the controller to close the valve. A controller is provided at the top of the box cover. The gas leak sensor and the motor are electrically connected to the controller through wires. The controller receives the gas leak signal and controls the motor to operate.

[0011] Preferably, the locking structure includes a rectangular housing fixedly connected to the outer wall of the pressure pipe, a positioning rod movably connected inside the rectangular housing, a circular hole for the positioning rod to pass through on the outer wall of the pressure pipe, and a positioning groove for the positioning rod to be inserted into on the outer wall of the valve stem. The positioning rod is inserted into the positioning groove of the valve stem to achieve mechanical locking and prevent accidental rotation. The valve can only be opened again by the operator manually releasing the locking of the valve stem.

[0012] Preferably, the left end of the positioning rod passes through the inner wall of the rectangular housing and is connected to a pull block. A slider is provided on the outer wall of the positioning rod near the right end. The outer wall of the slider fits against the inner wall of the rectangular housing. An arc-shaped groove is provided on the right side of the slider. When gas leaks, the perforated ball rotates 90 degrees and closes the valve. The right end of the positioning rod is inserted into the positioning groove, and the concave surface of the arc-shaped groove fits against the outer wall of the pressure pipe.

[0013] Preferably, a spring is sleeved on the outer wall of the positioning rod. The left end of the spring abuts against the left side of the inner wall of the rectangular housing, and the right end of the spring abuts against the left side of the slider. The spring provides elastic restoring force, so that the right end of the positioning rod abuts against the outer wall of the valve stem. When the valve stem rotates, the right end of the positioning rod can be quickly inserted into the positioning groove, so that the positioning rod remains in a locked state.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. The gas burner anti-leakage safety valve assembly uses a locking structure where the positioning rod and the valve stem positioning groove work together to achieve mechanical locking after the valve is closed. The locking can only be restarted by manually pulling the pull block, which completely avoids accidental valve opening due to misoperation or accidental contact, and fundamentally eliminates the hidden danger of secondary gas leakage.

[0015] 2. The gas burner anti-leakage safety valve assembly, based on the real-time monitoring function of the gas leak sensor and combined with the linkage control of the controller and motor, can immediately trigger the valve to close when the gas concentration exceeds the standard, thus achieving self-closing of the leak. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model; Figure 2 This is a schematic diagram of the overall second-view structure of this utility model; Figure 3 This is a partial cross-sectional structural diagram of the present invention; Figure 4 This is a cross-sectional structural diagram of the driving component in this utility model; Figure 5 This is a cross-sectional schematic diagram of the locking structure in this utility model; Figure 6 This is a partial structural diagram of the locking structure in this utility model; In the diagram: 100, First valve body; 110, Fixed connecting pipe; 200, Second valve body; 300, Perforated ball; 400, Valve seat; 500, Pressure pipe; 501, Circular hole; 600, Valve stem; 601, Positioning groove; 610, Driven gear; 700, Driving component; 710, Rectangular box; 720, Box cover; 730, Motor; 740, Drive gear; 750, Controller; 800, Gas leak sensor; 900, Locking structure; 910, Rectangular housing; 920, Positioning rod; 921, Pull block; 930, Slider; 931, Arc-shaped groove; 940, Spring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Please see Figures 1-6 This utility model provides a technical solution: A gas burner anti-leakage safety valve assembly includes a first valve body 100 and a second valve body 200. The first valve body 100 and the second valve body 200 are flanged together, forming a sealed cavity as the main structure of the gas passage. The first valve body 100 is provided with a perforated ball 300. The perforated ball 300 controls the gas flow by rotation. The internal through hole cooperates with the valve seat 400 to form a channel. The inner cavities of the first valve body 100 and the second valve body 200 are both provided with valve seats 400. The outer wall of the perforated ball 300 is tightly fitted with the inner walls of the two valve seats 400 to prevent gas leakage. The top of the first valve body 100 is provided with a fixed connecting pipe 110, which is used to connect the first valve body 100 and the pressure pipe 500 to ensure structural stability. The top of the fixed connecting pipe 110 is provided with a pressure pipe 500, which provides installation space for the valve stem 600 and guides its movement. The valve stem 600 is provided inside the pressure pipe 500, and the fixed connecting pipe 110 is provided with packing for sealing and positioning the valve stem 600. The pressure pipe 500 and the fixed connecting pipe 110 can prevent the valve stem 600 from slipping. The bottom end of the valve stem 600 is engaged with the perforated ball 300. The valve stem 600 drives the perforated ball 300 to rotate by rotation, thereby controlling the opening and closing of the gas passage. The top of the pressure tube 500 is provided with a drive component 700 for driving the valve stem 600 to rotate. The drive component 700 provides power through gear transmission to realize the automatic opening and closing of the valve. The outer wall of the pressure tube 500 is provided with a locking structure 900 for locking the valve stem 600. The locking structure 900 prevents secondary leakage caused by misoperation of the valve stem 600.

[0020] In this embodiment, the driving component 700 includes a rectangular box 710 fixedly connected to the top of the pressure tube 500. The top of the rectangular box 710 is provided with a cover 720, which closes the rectangular box 710 and supports the motor 730. The top end of the valve stem 600 passes through the bottom of the rectangular box 710 and is rotatably connected to the bottom of the cover 720.

[0021] Specifically, a motor 730 is located at the bottom of the cover 720 and near the right side. The motor 730 serves as a power source to drive the drive gear 740 to rotate. The output shaft of the motor 730 is coaxially connected to the drive gear 740. The drive gear 740 meshes with the driven gear 610 to transmit power to the valve stem 600.

[0022] Furthermore, a driven gear 610 is provided on the outer wall of the valve stem 600 near the top. The driven gear 610 meshes with the driving gear 740 to drive the rotation of the motor 730. The driven gear 610 converts the rotational motion of the motor 730 into the rotation of the valve stem 600.

[0023] Furthermore, a gas leak sensor 800 is provided at the bottom of the rectangular box 710. The gas leak sensor 800 detects the gas concentration in real time and triggers the controller 750 to close the valve. The controller 750 is provided at the top of the box cover 720. The gas leak sensor 800 and the motor 730 are electrically connected to the controller 750 through wires. The controller 750 receives the gas leak signal and controls the motor 730 to operate.

[0024] Furthermore, the locking structure 900 includes a rectangular housing 910 fixedly connected to the outer wall of the pressure tube 500. A positioning rod 920 is movably connected inside the rectangular housing 910. The outer wall of the pressure tube 500 has a circular hole 501 through which the positioning rod 920 passes. The outer wall of the valve stem 600 has a positioning groove 601 for the positioning rod 920 to be inserted. The positioning rod 920 is inserted into the positioning groove 601 of the valve stem 600 to achieve mechanical locking and prevent accidental rotation. The valve can only be opened again by the operator manually releasing the lock of the valve stem 600.

[0025] Furthermore, the left end of the positioning rod 920 passes through the inner wall of the rectangular housing 910 and is connected to a pull block 921. A slider 930 is provided on the outer wall of the positioning rod 920 near the right end. The outer wall of the slider 930 fits against the inner wall of the rectangular housing 910. An arc-shaped groove 931 is provided on the right side of the slider 930. When gas leaks, the perforated ball 300 rotates 90 degrees and closes the valve. The right end of the positioning rod 920 is inserted into the positioning groove 601, and the concave surface of the arc-shaped groove 931 fits against the outer wall of the pressure pipe 500.

[0026] Furthermore, a spring 940 is sleeved on the outer wall of the positioning rod 920. The left end of the spring 940 abuts against the left side of the inner wall of the rectangular housing 910, and the right end of the spring 940 abuts against the left side of the slider 930. The spring 940 provides elastic restoring force, so that the right end of the positioning rod 920 abuts against the outer wall of the valve stem 600. When the valve stem 600 rotates, the right end of the positioning rod 920 can be quickly inserted into the positioning groove 601, so that the positioning rod 920 is kept in a locked state.

[0027] It should be noted that the motor 730, gas leak sensor 800 and controller 750 in this utility model are all powered by an external power source. The components are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. The specific connection method should refer to the working sequence of each electrical component in the above working principle to complete the electrical connection. The detailed connection method is a well-known technology in the field. The above mainly introduces the working principle and process, and will not explain the electrical control.

[0028] In this embodiment, when the gas burner leak prevention safety valve assembly is in use, gas is transported through the sealed cavity formed by the flange connection between the first valve body 100 and the second valve body 200 when the gas burner is working normally. At this time, the internal through hole of the perforated ball 300 is aligned with the valve seat 400 to form a gas passage. When the gas leak sensor 800 detects an abnormal gas concentration, the controller 750 immediately starts the motor 730. The motor 730 drives the valve stem through the meshing of the drive gear 740 and the driven gear 610. Rotating 600 degrees causes the perforated ball 300 to rotate 90 degrees, closing the gas passage. At the same time, the spring 940 of the locking structure 900 pushes the positioning rod 920 through the round hole 501 of the pressure pipe 500 and inserts it into the positioning groove 601 of the valve stem 600, thus mechanically locking the valve stem 600. At this time, the pull block 921 of the locking structure 900 needs to be manually pulled to overcome the elastic force of the spring 940, so that the positioning rod 920 is completely disengaged from the positioning groove 601 of the valve stem 600 before the reverse drive motor 730 can be used to reset the perforated ball 300.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A gas burner leak-proof safety valve assembly, comprising a first valve body (100) and a second valve body (200), wherein the first valve body (100) and the second valve body (200) are flange-connected, characterized in that: The first valve body (100) is provided with a perforated ball (300). The inner cavities of the first valve body (100) and the second valve body (200) are both provided with valve seats (400). The outer wall of the perforated ball (300) is tightly fitted with the inner wall of the two valve seats (400). The top of the first valve body (100) is provided with a fixed connecting pipe (110). The top of the fixed connecting pipe (110) is provided with a pressure pipe (500). The pressure pipe (500) is provided with a valve stem (600). The bottom end of the valve stem (600) is engaged with the perforated ball (300). The top of the pressure pipe (500) is provided with a driving component (700) for driving the valve stem (600) to rotate. The outer wall of the pressure pipe (500) is provided with a locking structure (900) for locking the valve stem (600).

2. The gas burner leak-proof safety valve assembly according to claim 1, characterized in that: The drive unit (700) includes a rectangular box (710) fixedly connected to the top of the pressure tube (500), the top of the rectangular box (710) is provided with a box cover (720), and the top end of the valve stem (600) passes through the bottom of the rectangular box (710) and is rotatably connected to the bottom of the box cover (720).

3. The gas burner leak-proof safety valve assembly according to claim 2, characterized in that: A motor (730) is located at the bottom and near the right side of the cover (720), and the output shaft of the motor (730) is coaxially connected to a drive gear (740).

4. The gas burner leak-proof safety valve assembly according to claim 3, characterized in that: The valve stem (600) has a driven gear (610) on its outer wall near the top, and the driven gear (610) meshes with the driving gear (740) for transmission.

5. The gas burner leak-proof safety valve assembly according to claim 3, characterized in that: The bottom of the rectangular box (710) is provided with a gas leak sensor (800), and the top of the box cover (720) is provided with a controller (750). The gas leak sensor (800) and the motor (730) are electrically connected to the controller (750) through wires.

6. The gas burner leak-proof safety valve assembly according to claim 1, characterized in that: The locking structure (900) includes a rectangular housing (910) fixedly connected to the outer wall of the pressure tube (500), a positioning rod (920) is movably connected inside the rectangular housing (910), a circular hole (501) is opened on the outer wall of the pressure tube (500) for the positioning rod (920) to pass through, and a positioning groove (601) is opened on the outer wall of the valve stem (600) for the positioning rod (920) to be inserted into.

7. The gas burner leak-proof safety valve assembly according to claim 6, characterized in that: The left end of the positioning rod (920) passes through the inner wall of the rectangular shell (910) and is connected to a pull block (921). A slider (930) is provided on the outer wall of the positioning rod (920) near the right end. The outer wall of the slider (930) fits against the inner wall of the rectangular shell (910). An arc-shaped groove (931) is provided on the right side of the slider (930).

8. The gas burner leak-proof safety valve assembly according to claim 7, characterized in that: A spring (940) is fitted on the outer wall of the positioning rod (920). The left end of the spring (940) abuts against the left side of the inner wall of the rectangular shell (910), and the right end of the spring (940) abuts against the left side of the slider (930).

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