Downward-pressing closing mechanism for ventilation pipeline

Abstract

The utility model discloses a ventilation pipeline pressing closing mechanism which comprises a closing executing mechanism, a first pulling device and a second pulling device, the first pulling device and the second pulling device act in a pulling mode, and the driving end of the closing executing mechanism is connected with the second pulling device in a pulling mode. A ventilation pipeline closing device is arranged at the other end of the closing execution mechanism; and the closing execution mechanism is a pressing pushing mechanism. The problem that in the prior art, in order to achieve closing of a valve, closing can only be achieved through a closing structure in the valve is solved; or some auxiliary closing functions can be added outside the valve body, and the whole valve is complex in structure, so that the valve cannot be smoothly closed. According to the down-pressing closing mechanism for the ventilation pipeline, the closing effect on the ventilation pipeline is guaranteed through the down-pressing pushing mechanism; and furthermore, through a magnetic attraction driving mode, the driving effect can be conveniently achieved when the two driving pieces are in a spatial disconnection state, and the compactness of the whole device structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of the design of an external auxiliary closing structure of a gas valve, in particular to a pressing-down closing mechanism for a ventilation pipeline. Background Art

[0002] As an energy source, gas has a very wide range of uses in industrial production or daily life. Gas generally needs to be transmitted through pipelines. When gas is transmitted in pipelines, once a leakage occurs, the consequences will be very serious. When a gas leakage occurs during the pipeline transmission of gas, in order to be able to take timely measures, control valves for preventing gas leakage are generally installed on general pipelines.

[0003] In daily life, there are some potential safety hazard problems when using domestic gas pipelines. People often need to close the main gas valve when going out, or forget to close the valve due to negligence when the domestic gas pipeline is not in use, which is likely to cause gas poisoning or accidents such as fires and explosions.

[0004] In the prior art, there are some timing valves (such as self-closing valves or pressure-reducing valves). However, due to the small size of the valves, but the need to achieve the timing function, a relatively complex structure is required, resulting in the inability to well achieve the closing of the valves by the timing function.

[0005] Thus, it can be seen that in the prior art, in order to achieve closing, the valves can only be achieved through the internal closing structure of the valves; or some auxiliary closing functions are added outside the valve body. For example, when timing closing, the structure of the whole valve is complex, resulting in the inability to smoothly close the valve, which is likely to affect the closing effect of the valve. Summary of the Utility Model

[0006] In view of this, the main purpose of the utility model is to provide a pressing-down closing mechanism for a ventilation pipeline that ensures the closing effect on the ventilation pipeline and improves the structural compactness of the whole device.

[0007] To achieve the above object, the technical solution of the utility model is realized as follows:

[0008] A pressing-down closing mechanism for a ventilation pipeline includes: a closing execution mechanism, a first pulling device, and a second pulling device. The first pulling device and the second pulling device act by pulling. The driving end of the closing execution mechanism is pull-connected to the second pulling device, and a ventilation pipeline closing device is arranged at the other end of the closing execution mechanism;

[0009] In a preferred embodiment, the closing execution mechanism is a pressing-down pushing mechanism.

[0010] In a preferred embodiment, the first pulling device and the second pulling device are magnetic parts that act by mutual magnetic attraction.

[0011] In a preferred embodiment, the first pulling device and the second pulling device are respectively magnets;

[0012] In a preferred embodiment, one of the first pulling device and the second pulling device is a magnet and the other is a magnetic material part.

[0013] In a preferred embodiment, the closing actuator includes: a pulling member and a pressing member. One end of the pulling member is fixedly connected to the second pulling device, and the other end of the pulling member cooperates to pull the pressing member, so that the other end of the pressing member presses and rotates; the pressing member presses to push the closing air duct device to close the air duct.

[0014] In a preferred embodiment, an installation groove is formed in the upper side of the air duct. An air inlet hole and an air outlet hole are respectively formed in the bottom of the installation groove. A sealing cover plate is hermetically connected to the upper side of the installation groove, and the closing air duct device passes through the sealing cover plate and extends into the air outlet hole.

[0015] In a preferred embodiment, the closing air duct device includes: a closing rod, a closing plug and a diaphragm. The lower end of the closing rod is fixedly connected to the closing plug, and the middle part of the closing rod is fixedly connected to the diaphragm;

[0016] In a preferred embodiment, the outer wall of the closing rod is drivingly connected to the pressing member;

[0017] In a preferred embodiment, the sealing cover plate is provided with a diaphragm hole, and the diaphragm is hermetically connected inside the diaphragm hole.

[0018] In a preferred embodiment, it further includes: a sealing shell, and the sealing shell covers the upper side of the installation groove;

[0019] In a preferred embodiment, the closing actuator and the second pulling device are limit-connected inside the sealing shell.

[0020] In a preferred embodiment, the pressing member includes: a winding part, an elongation part and a sleeving part. The elongation part is integrally formed on one side of the winding part, the sleeving part is integrally formed at the other end of the elongation part, and the sleeving part is sleeved on the outer wall of the closing rod;

[0021] In a preferred embodiment, a limiting shaft is arranged in the middle of the sealing shell. The middle part of the winding part is wound on the outer wall of the limiting shaft, and the other end of the winding part extends downward and is drivingly matched with the pulling member.

[0022] In a preferred embodiment, a support seat is clamped on the lower side of the sealing shell. The upper side of the support seat is fixedly connected to the limiting shaft, and the upper side of the support seat supports the pulling member.

[0023] In a preferred embodiment, the pulling member includes a driving head, an elongating plate, and a connecting head. The two ends of the elongating plate protrude upward from the driving head and the connecting head. The connecting head is fixedly connected to the second pulling device, and the driving head drives the winding portion.

[0024] The air vent pipe pressing and closing mechanism of the present utility model has the following beneficial effects:

[0025] The air vent pipe pressing and closing mechanism includes a closing execution mechanism, a first pulling device, and a second pulling device. The first pulling device and the second pulling device act by pulling. The driving end of the closing execution mechanism is pull-connected to the second pulling device, and the other end of the closing execution mechanism is provided with an air vent pipe closing device; the closing execution mechanism is a downward pressing and pushing mechanism.

[0026] It solves the problem in the prior art that in order to achieve closing, the valve can only be achieved through the closing structure inside the valve; or some auxiliary closing functions are added outside the valve body. For example, when closing at a fixed time, the structure of the whole valve is complex, resulting in the valve being unable to close smoothly, which easily affects the closing effect of the valve.

[0027] The air vent pipe pressing and closing mechanism ensures the closing effect on the air vent pipe through the downward pressing and pushing mechanism; further, through the magnetic drive method, it is convenient to achieve the driving effect when the two driving members are in a spatially disconnected state, improving the compactness of the whole device structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 FIG. 23 is a schematic structural diagram of an air vent pipe pressing and closing mechanism according to an embodiment of the present disclosure;

[0030] Figure 2 FIG. 27 is a partial cross-sectional view of the air vent pipe pressing and closing mechanism at the closing execution mechanism according to an embodiment of the present disclosure;

[0031] Figure 3 FIG. 31 is a schematic structural diagram of the closing execution mechanism of the air vent pipe pressing and closing mechanism according to an embodiment of the present disclosure;

[0032] Figure 4Schematic diagram of the pressing member of the air vent pipe pressing and closing mechanism according to an embodiment of the present disclosure;

[0033] Figure 5 Schematic diagram of the pulling member of the air vent pipe pressing and closing mechanism according to an embodiment of the present disclosure.

[0034]

Description of main component symbols

[0035] 01, air vent pipe;

[0036] 011, air inlet hole; 012, air outlet hole; 013, installation groove; 014, sealing cover plate;

[0037] 02, valve body;

[0038] 03, timer;

[0039] 1, first pulling device; 2, second pulling device;

[0040] 3, closing actuator;

[0041] 321, pulling member; 322, pressing member;

[0042] 323, winding part; 324, elongation part; 325, sleeving part;

[0043] 326, driving head; 327, elongation plate; 328, connecting head;

[0044] 4, air vent pipe closing device;

[0045] 43, closing rod; 44, closing plug; 45, diaphragm;

[0046] 6, sealing shell; 61, limiting shaft;

[0047] 7, support seat. Detailed implementation manners

[0048] The air vent pipe pressing and closing mechanism of the present invention will be further described in detail below in conjunction with the accompanying drawings and the embodiments of the present invention.

[0049] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0050] It should be noted that the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0051] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of the present 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 under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0052] For ease of description, spatial relative terms such as "above", "on top of", "on the upper surface", "above" etc. may be used herein to describe the spatial positional relationship of a device or feature shown in the figure with other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the figure. For example, if the device in the figure is inverted, the device described as "above" or "on top of" other devices or structures will then be positioned "below" or "beneath" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations are made for the spatial relative descriptions used herein.

[0053] As Figures 1 - 5 shown, the air vent pipe pressing and closing mechanism includes: a closing execution mechanism 3 that can execute the closing action on the air vent pipe 01, a first pulling device 1 and a second pulling device 2 that transmit driving force to the closing execution mechanism 3 through interaction. Due to the pulling action of the first pulling device 1 and the second pulling device 2, the driving end of the closing execution mechanism 3 is connected to the second pulling device 2 in a pulling manner, and a closing air vent pipe device 4 is provided at the other end of the closing execution mechanism 3;

[0054] To facilitate the implementation of closing the actuator 3, meet the change in the direction of movement, and achieve closing with a closing structure not in one direction. The closing actuator 3 is a downward pressing and pushing mechanism.

[0055] By arranging the first pulling device 1 on the mechanism that meets the triggering requirements, when the first pulling device 1 reaches the set requirements, it can exert a pulling effect on the second pulling device 2, thereby realizing the driving effect on the closing actuator 3. The downward pressing and pushing mechanism closes the ventilation pipe 01 by changing the direction of movement.

[0056] Here: The mechanism that meets the triggering requirements can have various triggering requirements. For example, in this application, it can be the timer 03 of the self-closing valve (or the timer structure of the pressure regulating valve), and the timer 03 is arranged on the upper side of the valve body 02. The first pulling device 1 is fixedly connected to the side wall of the timer 03. When the timer 03 rotates to the specified position, the first pulling device 1 adsorbs the second pulling device 2, thereby realizing the lateral driving effect on the closing actuator 3. Then, the downward pressing and pushing mechanism converts the lateral movement into a vertical movement, so as to conveniently close the ventilation pipe 01.

[0057] Preferably, the first pulling device 1 is arranged at the position when the timer is zero. When the timer 03 rotates to zero, the first pulling device 1 and the second pulling device 2 act.

[0058] Further preferably, when the timer 02 rotates to zero, the first pulling device 1 and the second pulling device 2 are closest to each other, so that the action between the first pulling device 1 and the second pulling device 2 can be better realized.

[0059] To ensure the compactness of the structure and enable the first pulling device 1 and the second pulling device 2 to act on each other when they reach the set distance position (the closest position). Therefore, preferably, the first pulling device 1 and the second pulling device 2 are selected as magnetic parts with mutual magnetic attraction.

[0060] The first pulling device 1 and the second pulling device 2 are respectively magnets (one is a magnet, and the other is a material that can be adsorbed by the magnet (including a magnet)).

[0061] During the use of the timer, it rotates. When the timing ends, the distance between the first pulling device 1 and the second pulling device 2 reaches the set distance. The first pulling device 1 adsorbs the second pulling device 2, thereby pulling the closing actuator 3 to close the ventilation pipe 01.

[0062] In one embodiment, the first pulling device 1 and the second pulling device 2 are respectively magnets; although the cost of the two magnets increases slightly, the magnetic effect is good, which can ensure the smooth progress of its driving action.

[0063] In another embodiment, one of the first pulling device 1 and the second pulling device 2 is a magnet and the other is a magnetic material part. That is, as long as the first pulling device 1 and the second pulling device 2 can attract each other when they reach a set distance, it is okay, which reduces the cost of selecting a permanent magnet, and the magnetic material part (such as an iron block) has a low cost. The closing actuator 3 includes: a pulling member 321 for lateral pulling action and a pressing member 322 that is pulled and rotated. One end of the pulling member 321 is fixedly connected to the second pulling device 2, and the other end of the pulling member 321 cooperates with the pulling and pressing of the pressing member 322 to make the other end of the pressing member 322 press and rotate; the pressing member 322 presses and pushes the closing air duct device 4 to close the air duct 01.

[0064] In order to improve the sealing effect and reduce the possibility of gas leakage, it is also possible to satisfy the transmission of actions under isolation conditions. An installation groove 013 is opened on the upper side of the air duct 01. An air inlet hole 011 and an air outlet hole 012 are respectively opened at the bottom of the installation groove 013. A sealing cover plate 014 is hermetically connected to the upper side of the installation groove 013. The closing air duct device 4 passes through the sealing cover plate 014 and extends into the air outlet hole 012. The air inlet hole 011 and the air outlet hole 012 are hermetically isolated inside the installation groove 013, greatly reducing the possibility of gas leakage and improving the safety performance of the product.

[0065] In order to ensure sealing and at the same time achieve action transmission to ensure the execution of closing. The closing air duct device 4 includes: a closing rod 43, a closing plug 44 and a diaphragm 45. The lower end of the closing rod 43 is fixedly connected to the closing plug 44, and the middle part of the closing rod 43 is fixedly connected to the diaphragm 45;

[0066] The outer wall of the closing rod 43 is drivingly connected to the pressing member 322; by making the size of the pressing member 322 smaller than the size of the lower side of the outer wall of the closing rod 43, it is satisfied that the pressing member 322 pushes the closing rod 43 to press down to achieve the action.

[0067] In order to ensure the sealing effect, the sealing cover plate 014 is provided with a diaphragm hole, and the diaphragm 45 is hermetically connected inside the diaphragm hole. Through the deformation of the diaphragm, the up and down movement of the closing rod 43 can be realized under the condition of ensuring sealing, so as to satisfy the realization of the closing action.

[0068] In order to further improve the sealing effect and ensure the use safety of the whole mechanism, the mechanism further includes: a sealing shell 6, and the sealing shell 6 covers the upper side of the installation groove 013;

[0069] The closing actuator 3 and the second pulling device 2 are limitedly connected inside the sealing shell 6. Of course, the sealing shell 6 is made of non-magnetic material to ensure that the first pulling device 1 can attract the second pulling device 2 inside the sealing shell 6.

[0070] To facilitate the transformation of a lateral movement into a downward rotational movement, the pressing member 322 includes a winding portion 323 for articulated driving, an extension portion 324 extending a set length, and a sleeving portion 325 sleeved on the outer wall of the closing rod 43 to press down the closing rod 43. The extension portion 324 is integrally formed on one side of the winding portion 322, and the sleeving portion 325 is integrally formed at the other end of the extension portion 324. The sleeving portion 325 is sleeved on the outer wall of the closing rod 43;

[0071] To better limit the winding portion 323 and enable the entire pressing member 322 to rotate around the winding portion 323 to achieve a pressing action. A limiting shaft 61 is provided in the middle of the sealing shell 6. The middle of the winding portion 323 is wound around the outer wall of the limiting shaft 61, and the other end of the winding portion 323 extends downward and is in driving cooperation with the pulling member 321.

[0072] To support the pulling member 321, ensure that the pulling member 321 can slide along a plane, and improve the driving effect. Also, to facilitate the fixing of the limiting shaft 61 and reduce the processing complexity of the sealing shell 6. A support base 7 is clamped to the lower side of the sealing shell 6. The limiting shaft 61 is fixedly connected to the upper side of the support base 7, and the upper side of the support base 7 supports the pulling member 321.

[0073] To meet the cooperation with the second pulling device 2, especially the cooperation with the winding portion 323, and satisfy the pulling effect on the pressing member 322. The pulling member 321 includes an integrally formed driving head 326, an extension plate 327, and a connecting head 328. The extension plate 327 extends upward from both ends to the driving head 326 and the connecting head 328. The connecting head 328 is fixedly connected to the second pulling device 2, and the driving head 326 drives the winding portion 323. The lower bottom of the extension plate 327 slides along the support base 7.

[0074] The above is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A ventilation duct pressing down closing mechanism, characterized in that: include: A closing actuator (3), a first pulling device (1) and a second pulling device (2), wherein the first pulling device (1) and the second pulling device (2) have a pulling effect, the driving end of the closing actuator (3) is connected to the second pulling device (2) by pulling, and the other end of the closing actuator (3) is provided with a closing ventilation duct device (4); The closing actuator (3) is a downward pressing mechanism.

2. The ventilation duct pressing and closing mechanism according to claim 1, characterized in that: The first pulling device (1) and the second pulling device (2) are magnetic parts that magnetically attract each other.

3. The ventilation duct pressing and closing mechanism according to claim 2, characterized in that: The first pulling device (1) and the second pulling device (2) are magnets respectively; Alternatively, one of the first pulling device (1) and the second pulling device (2) is a magnet and the other is a magnetic material.

4. The ventilation duct pressing and closing mechanism according to any one of claims 1 to 3, characterized in that: The closing actuator (3) comprises: a pulling member (321) and a pressing member (322); one end of the pulling member (321) is fixedly connected to the second pulling device (2); the other end of the pulling member (321) cooperates to pull the pressing member (322) so that the other end of the pressing member (322) is pressed downward and rotated; the pressing member (322) presses downward to push the ventilation duct closing device (4) to close the ventilation duct (01).

5. The ventilation duct pressing and closing mechanism according to claim 4, characterized in that: The ventilation duct (01) is provided with a mounting groove (013) on the upper side, and an air inlet hole (011) and an air outlet hole (012) are respectively provided at the bottom of the mounting groove (013). A sealing cover plate (014) is sealedly connected to the upper side of the mounting groove (013), and the ventilation duct closing device (4) passes through the sealing cover plate (014) and extends into the air outlet hole (012).

6. The ventilation duct pressing and closing mechanism according to claim 5, characterized in that: The ventilation duct closing device (4) comprises: a closing rod (43), a closing plug (44) and a membrane (45), wherein the lower end of the closing rod (43) is fixedly connected to the closing plug (44), and the middle part of the closing rod (43) is fixedly connected to the membrane (45); The outer wall of the closing rod (43) and the pressing member (322) are drivingly connected; The sealing cover plate (014) is provided with a membrane hole, and the membrane (45) is sealed and connected inside the membrane hole.

7. The ventilation duct pressing and closing mechanism according to claim 6, characterized in that: Also includes: A sealing shell (6), wherein the sealing shell (6) is disposed on the upper side of the mounting groove (013); The closing actuator (3) and the second pulling device (2) are position-limitingly connected inside the sealing shell (6).

8. The ventilation duct pressing-down closing mechanism according to claim 7, characterized in that: The pressing member (322) comprises: a winding portion (323), an extension portion (324) and a sleeve portion (325); the extension portion (324) is integrally formed on one side of the winding portion (323); the sleeve portion (325) is integrally formed on the other end of the extension portion (324); and the sleeve portion (325) is sleeved on the outer wall of the closing rod (43); A limiting shaft (61) is arranged in the middle of the sealing shell (6), the middle of the winding portion (323) is wound around the outer wall of the limiting shaft (61), and the other end of the winding portion (323) extends downward to drive and cooperate with the pulling member (321).

9. The ventilation duct pressing-down closing mechanism according to claim 8, characterized in that: A support seat (7) is clamped on the lower side of the sealing shell (6), the upper side of the support seat (7) is fixedly connected to the limiting shaft (61), and the upper side of the support seat (7) supports the pulling member (321).

10. The ventilation duct pressing and closing mechanism according to claim 9, characterized in that: The pulling member (321) comprises: a driving head (326), an extension plate (327) and a connecting head (328); both ends of the extension plate (327) extend upward from the driving head (326) and the connecting head (328); the connecting head (328) is fixedly connected to the second pulling device (2); and the driving head (326) drives the winding portion (323).

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