Fuel gas closing mechanism and timing valve thereof

Abstract

The utility model relates to the technical field of gas valve body structural design, in particular to a gas closing mechanism and a timing valve thereof, the gas closing mechanism comprises a closing executing mechanism, a first pulling device and a second pulling device, and the first pulling device and the second pulling device play a pulling role to close the gas valve body. The driving end of the closing executing mechanism is in pulling connection with the second pulling device; the closing execution mechanism comprises an end cover, a closing execution rod and a plug, the end cover is provided with an air hole, the closing execution rod is slidably connected with the end cover, one end of the closing execution rod is fixedly connected with the second pulling device, the other end of the closing execution rod is fixedly connected with the plug, and the second pulling device drives the plug to cover or be away from the air hole through the closing execution rod. The magnetic force borne by the second pulling device and the opposite force borne by the plug when the plug covers the air hole are on the same straight line, and the acting direction of the force is at the axis of the closing execution rod, so that the stress is balanced, and the problems of low sealing quality and the like possibly caused by unbalanced stress in the prior art are solved.

Description

Technical Field

[0001] This utility model relates to the field of gas valve body structure design technology, and in particular to a gas shut-off mechanism and its timing valve. Background Technology

[0002] A timer valve is a safety device installed on gas pipelines or gas appliances (such as gas stoves and gas water heaters). Its core function is to automatically shut off the gas supply after a preset time. A timer valve can automatically cut off the power supply, preventing leaks, fires, and other hazards caused by unattended gas combustion. Furthermore, by promptly shutting off the gas, a timer valve can achieve energy savings and optimize gas usage efficiency.

[0003] In the prior art, some timer valves have relatively complex structures and their timing effect is not bad. In view of this, the applicant has applied for a ventilation pipe pull-off closing mechanism CN 222950495 U, which provides a ventilation pipe pull-off closing mechanism with a simple structural design that can be easily attracted by magnetic materials and whose lateral movement satisfies the operation of closing and opening the ventilation pipe.

[0004] Some parts of this product are difficult to process, resulting in high production costs. Furthermore, the magnetic force on the second pulling device and the reverse force on the cover from the exhaust port are not on the same straight line, leading to uneven force distribution and potentially poor sealing quality. Utility Model Content

[0005] In view of this, the main purpose of this utility model is to provide a gas shut-off mechanism that uses a simple magnetic material adsorption structure to enable the plug to move longitudinally, thereby satisfying the function of closing and opening the gas pipeline.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A gas shut-off mechanism includes: a shut-off actuator, a first pulling device, and a second pulling device, wherein the first pulling device and the second pulling device have a pulling action, and the drive end of the shut-off actuator is pulled connected to the second pulling device;

[0008] The closing actuator includes an end cap, a closing actuator rod, and a plug. The end cap has an air hole. The closing actuator rod is slidably connected to the end cap. One end of the closing actuator rod is fixedly connected to a second pulling device, and the other end of the closing actuator rod is fixedly connected to the plug. The second pulling device drives the plug to cover or move away from the air hole through the closing actuator rod.

[0009] In a preferred embodiment, it further includes: a housing; the housing is sealed and fixed to the outside of the gas pipeline, the gas pipeline is blocked by a cap to form a first pipeline and a second pipeline, the second pipeline has a through hole, the through hole connects the second pipeline and the housing;

[0010] The end cap is disposed between the housing and the first pipe, and the end cap is sealed to the first pipe. The vent hole connects the end cap and the first pipe.

[0011] In a preferred embodiment, the closing actuator further includes a spring, which is sleeved on the outside of the closing actuator rod. One end of the spring contacts the end cover, and the other end contacts the plug, pushing the plug away from the end cover.

[0012] In a preferred embodiment, the first pulling device is a magnetic component, the second pulling device is a magnetic component, and the first pulling device and the second pulling device have a mutual magnetic attraction effect.

[0013] In a preferred embodiment, the closing actuator includes a closing actuator body and a limiting sleeve, wherein the limiting sleeve is fixed to the outside of the closing actuator body and defines the position of the closing actuator.

[0014] In a preferred embodiment, the limiting sleeve is a long cylinder with internal threads. One end of the limiting sleeve is threadedly connected to the closing actuator body, and the other end is connected to the bolt fixing the second pulling device.

[0015] In a preferred embodiment, a sealing ring protrudes from the lower end of the end cap.

[0016] In a preferred embodiment, one end of the closing actuator connecting plug is provided with an annular protrusion, the plug is made of rubber, and the plug is sleeved on the outside of the annular protrusion.

[0017] In a preferred embodiment, a sealing thread is provided on the outer side of the end cap, and the sealing thread is sealed to the gas pipeline.

[0018] This utility model also discloses a timer valve, including the gas shut-off mechanism described above, and further including: a timer device, wherein the first pull device is fixed to the lower end of the timer knob of the timer device.

[0019] The gas shut-off mechanism of this utility model has the following beneficial effects:

[0020] A gas shut-off mechanism includes: a shut-off actuator, a first pulling device, and a second pulling device. The first pulling device and the second pulling device have a pulling action. The drive end of the shut-off actuator is pulled and connected to the second pulling device. The shut-off actuator includes: an end cover, a shut-off rod, and a plug. The end cover has a gas hole. The shut-off rod is slidably connected to the end cover. One end of the shut-off rod is fixedly connected to the second pulling device. The other end of the shut-off rod is fixedly connected to the plug. The second pulling device drives the plug to cover or move away from the gas hole through the shut-off rod.

[0021] The gas shut-off mechanism disclosed in this utility model has a simple structure and low product processing cost, solving the problems of difficult parts processing and high production costs in the prior art. Furthermore, the magnetic force on the second pulling device and the reverse force when the plug is placed on the gas hole are on the same straight line, with the force acting in the direction of the axis of the shut-off actuator. This balanced force solves the problem in the prior art where uneven force distribution may lead to poor sealing quality. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the gas shut-off mechanism and the timer valve when it is open according to one embodiment of the present disclosure;

[0024] Figure 2 This is a schematic diagram of the gas shut-off mechanism and the timer valve when shutting down according to one embodiment of the present disclosure;

[0025] Figure 3 for Figure 1 A magnified view of part A shown below;

[0026] Figure 4 for Figure 2 A magnified view of section B shown below;

[0027] Figure 5 This is a schematic diagram of a timing valve structure according to one embodiment of the present disclosure;

[0028] Figure 6 This is a schematic diagram of the structure of a timed valve removal housing according to one embodiment of the present disclosure;

[0029] Figure 7 This is a schematic diagram of the closing actuator and the second pulling device according to one embodiment of the present disclosure;

[0030] Figure 8 This is a schematic diagram of an end cap structure according to one embodiment of the present disclosure;

[0031] Figure 9 This is a structural schematic diagram of an end cap at another angle according to one embodiment of the present disclosure.

[0032] [Explanation of Key Component Symbols]

[0033] 1. Shut down the executing mechanism;

[0034] 11. End cap; 12. Closing actuator; 13. Plug; 14. Spring;

[0035] 111. Stomata;

[0036] 121. Close the actuator body; 122. Limit sleeve;

[0037] 2. First pulling device;

[0038] 3. Second pulling device;

[0039] 4. Shell;

[0040] 5. Gas pipelines;

[0041] 51. First pipe; 52. Second pipe; 53. Through hole;

[0042] 6. End cap;

[0043] 7. Timer knob. Detailed Implementation

[0044] The gas shut-off mechanism of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0045] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0046] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0047] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0048] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0049] The gas shut-off mechanism disclosed in this utility model includes: a shut-off actuator 1, a first pulling device 2 and a second pulling device 3, the first pulling device 2 and the second pulling device 3 having a pulling action, and the drive end of the shut-off actuator 1 and the second pulling device 3 being pulled together.

[0050] The gas shut-off mechanism 1 includes an end cap 11, a shut-off lever 12, and a plug 13. The end cap 11 has a vent 111. The shut-off lever 12 is slidably connected to the end cap 11. One end of the shut-off lever 12 is fixedly connected to a second pulling device 3, and the other end is fixedly connected to the plug 13. The second pulling device 3 moves the plug 13 to cover or move away from the vent 111 via the shut-off lever 12. When the gas shut-off mechanism is working, the first pulling device 2 can pull the second pulling device 3. The second pulling device 3 moves the plug 13 upward via the shut-off lever 12, and the plug 13 blocks the vent 111 on the end cap 11. Figure 2 and Figure 4As shown, this prevents gas from passing through, and the timer valve is in the closed state. When the first pulling device 2 stops pulling the second pulling device 3, under the action of gas pressure, the plug 13 will move away from the gas hole 111, as shown. Figure 1 and Figure 3 As shown, at this time, the gas can pass through the gas port 111, causing the timer valve to be in an open state.

[0051] The gas shut-off mechanism disclosed in this utility model has a simple structure and low product processing cost, solving the problems of difficult parts processing and high production costs in the prior art. Furthermore, the force on the second pulling device 3 and the reverse force on the plug 13 when it is placed over the air hole 111 are on the same straight line, and the direction of the force is at the axis of the shut-off actuator 12. This balanced force solves the problem in the prior art where uneven force distribution may lead to poor sealing quality.

[0052] Considering the structural design and processing of the gas shut-off mechanism, it also includes: a housing 4; the housing 4 is sealed and fixed on the outside of the gas pipeline 5, the gas pipeline 5 is blocked by the end cap 6 to form a first pipeline 51 and a second pipeline 52, the second pipeline 52 has a through hole 53, the through hole 53 connects the second pipeline 52 and the housing 4;

[0053] End cap 11 is disposed between housing 4 and first pipe 51, and end cap 11 is sealed to first pipe 51. Gas vent 111 connects end cap 11 and first pipe 51. The gas flow direction is as follows... Figure 1 and Figure 3 As indicated by arrow C, the gas flows from the second pipe 52 into the housing 4 through the through hole 53, and then flows from the housing 4 into the first pipe 51 through the vent 111; if the vent 111 is blocked by a plug, as... Figure 2 and Figure 4 As shown, the gas in the housing 4 cannot flow into the first pipe 51, the timer valve is closed, and the gas in the pipe cannot flow.

[0054] To prevent the pressure difference of the gas from preventing the plug 13 from moving away from the gas hole 111, the closing actuator 1 also includes a spring 14. The spring 14 is sleeved on the outside of the closing actuator 12, with one end of the spring 14 contacting the end cap 11 and the other end contacting the plug 13, pushing the plug 13 away from the end cap 11. Thus, when the first pulling device 2 stops pulling the second pulling device 3, the plug 13 will move away from the gas hole 111 under the action of the spring 14. Figure 1 and Figure 3 As shown, at this time, the gas can pass through the gas hole 111, so that the timer valve is in the open state.

[0055] The first pulling device 2 is a magnetic component, and the second pulling device 3 is a magnetic component. The first pulling device 2 and the second pulling device 3 have a mutual magnetic attraction. The first pulling device 2 can move with the timing device of the timing valve. When the first pulling device 2 moves to the second pulling device 3, it has a mutual magnetic attraction with the second pulling device 3, causing the closing actuator 12 to drive the plug 13 upward. The plug 13 covers the gas hole 111, so that the timing valve is in the closed state. When the first pulling device 2 moves away from the second pulling device 3, under the pressure difference of the gas and the action of the spring 14, the plug 13 will move away from the gas hole 111, so that the timing valve is in the open state.

[0056] The closing actuator 12 includes a closing actuator body 121 and a limiting sleeve 122. The limiting sleeve 122 is fixed to the outside of the closing actuator body 121, limiting the position of the closing actuator 12. When the plug 13 moves away from the end cap 11, the limiting sleeve 122 contacts the plug 13, preventing the closing actuator 12 and the plug 13 from moving further downward, thereby limiting the distance between the second pulling device 3 and the first pulling device 2.

[0057] To facilitate the fixing of the limiting sleeve 122, the closing actuator body 121, and the second pulling device 3, the limiting sleeve 122 is a long cylinder with internal threads, and the closing actuator body 121 has external threads. One end of the limiting sleeve 122 is connected to the external thread of the closing actuator body 121, and the other end is connected to the bolt fixing the second pulling device 3.

[0058] A sealing ring 112 protrudes from the lower end of the end cap 11. When the plug 13 covers the air hole 111, the plug 13 contacts the sealing ring 112 under the end cap. The sealing ring 112 protrudes from the lower end of the end cap 11. The sealing ring 112 requires high machining precision, thereby improving the sealing quality between the plug 13 and the end cap and preventing air leakage.

[0059] The end of the closing actuator 12 connected to the plug 13 is provided with an annular protrusion. The plug 13 is made of rubber and is fitted on the outside of the annular protrusion, thereby ensuring the sealing quality of the plug.

[0060] To ensure the sealing quality between the end cap 11 and the gas pipeline 5, a sealing thread 113 is provided on the outside of the end cap 11, and the sealing thread 113 is sealed to the gas pipeline 5.

[0061] This invention also discloses a timer valve, including the aforementioned gas shut-off mechanism, and further comprising: a timer device, wherein a first pulling device 2 is fixed to the lower end of the timer knob 7 of the timer device. Under normal circumstances, the timer knob 7 operates as follows... Figure 2As shown, the first pulling device 2 is located above the second pulling device 3. The second pulling device 3 is pulled by the first pulling device 2. The plug 13 covers the air hole 111. The timer valve is in the closed state. When the timer valve needs to be opened at a certain time, the timer knob 7 of the timer device is rotated. The first pulling device 2 moves away from the second pulling device 3. At this time, the first pulling device 2 has no force on the second pulling device 3. Under the action of the spring 14, the plug 12 moves away from the air hole 111, and the timer valve is in the open state. The timer knob 7 rotates with time. When the first pulling device 2 fixed on the timer knob 7 rotates to above the second pulling device 3, the timer valve closes.

[0062] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A gas shut-off mechanism, characterized in that, include: The closing actuator (1), the first pulling device (2), and the second pulling device (3) have a pulling action, and the driving end of the closing actuator (1) and the second pulling device (3) are connected. The closing actuator (1) includes: an end cap (11), a closing actuator (12), and a plug (13). The end cap (11) has an air hole (111). The closing actuator (12) is slidably connected to the end cap (11). One end of the closing actuator (12) is fixedly connected to the second pulling device (3). The other end of the closing actuator (12) is fixedly connected to the plug (13). The second pulling device (3) drives the plug (13) to cover or move away from the air hole (111) through the closing actuator (12).

2. The gas shut-off mechanism according to claim 1, characterized in that, Also includes: Shell (4); The housing (4) is sealed and fixed to the outside of the gas pipeline (5). The gas pipeline (5) is blocked by the end cap (6) to form a first pipeline (51) and a second pipeline (52). The second pipeline (52) has a through hole (53) that connects the second pipeline (52) and the housing (4). The end cap (11) is disposed between the housing (4) and the first pipe (51), the end cap (11) is sealed to the first pipe (51), and the vent (111) connects the end cap (11) and the first pipe (51).

3. The gas shut-off mechanism according to claim 1, characterized in that, The closing actuator (1) also includes a spring (14), which is sleeved on the outside of the closing actuator (12). One end of the spring (14) contacts the end cap (11), and the other end contacts the plug (13), pushing the plug (13) away from the end cap (11).

4. The gas shut-off mechanism according to claim 1, characterized in that, The first pulling device (2) is a magnetic component, the second pulling device (3) is a magnetic component, and the first pulling device (2) and the second pulling device (3) have a mutual magnetic attraction.

5. The gas shut-off mechanism according to claim 1, characterized in that, The closing actuator (12) includes a closing actuator body (121) and a limiting sleeve (122). The limiting sleeve (122) is fixed on the outside of the closing actuator body (121) to limit the position of the closing actuator (12).

6. The gas shut-off mechanism according to claim 5, characterized in that, The limiting sleeve (122) is a long cylinder with internal threads. One end of the limiting sleeve (122) is threadedly connected to the closing actuator body (121), and the other end is connected to the bolt fixing the second pulling device (3).

7. The gas shut-off mechanism according to claim 1, characterized in that, A sealing ring (112) protrudes from the lower end of the end cap (11).

8. The gas shut-off mechanism according to claim 1, characterized in that, The closing actuator (12) is connected to a plug (13) with an annular protrusion at one end. The plug (13) is made of rubber and is fitted on the outside of the annular protrusion.

9. The gas shut-off mechanism according to claim 1, characterized in that, The end cap (11) is provided with a sealing thread (113) on the outside, and the sealing thread (113) is sealed to the gas pipeline (5).

10. A timing valve, characterized in that, The gas shut-off mechanism according to any one of claims 1-9 further includes: a timing device, wherein the first pulling device (2) is fixed at the lower end of the timing knob (7) of the timing device.

Images