Pull closing mechanism for ventilation pipeline

Abstract

The utility model discloses a ventilation pipeline pulling 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 play a pulling role, and the driving end of the closing executing mechanism is connected with the second pulling device in a pulling mode. An exhaust hole is formed in the side portion of a cylinder of the closing execution mechanism, one end of a closing execution rod is fixedly connected with a second pulling device, and the closing execution rod drives the cover shell to cover the exhaust hole or be away from the exhaust hole. The problems that in the prior art, due to the fact that the whole valve is complex in structure, the valve cannot be smoothly closed, and the closing effect of the valve is easily affected are solved. The ventilation pipeline pulling closing mechanism is reasonable in overall structural design, and adsorption force can be transmitted through the magnet. And the closing execution structure can push the ventilation pipeline to execute the closing and sealing effects.

Description

Technical Field

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

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

[0003] In daily life, there are some potential safety hazards when using household gas pipelines. People often need to close the main gas valve when going out, or forget to close the valve when the household gas pipeline is not in use, which can easily cause gas poisoning or cause fires, explosions and other accidents.

[0004] In the prior art, there are some timing valve bodies (such as self-closing valves or pressure reducing valves, etc.), but due to the small size of the valve body, but the need to realize the timing function requires a more complex structure, resulting in the timing function cannot achieve the closing of the valve body well.

[0005] It can be seen that in the prior art, the valve body can only be closed through the closing structure inside the valve body. However, in order to add some auxiliary closing functions, such as timed closing, the structure of the entire valve body is complicated, resulting in the valve body being unable to close smoothly, which easily affects the closing effect of the valve body. Utility Model Content

[0006] In view of this, the main purpose of the utility model is to provide a ventilation duct pulling closing mechanism with a simple structural design, which can be conveniently adsorbed by magnetic materials and can satisfy the lateral movement to close and open the ventilation duct.

[0007] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0008] A ventilation duct pull-to-close mechanism comprises: a closing actuator, a first pulling device and a second pulling device, wherein the first pulling device and the second pulling device are pulled, and a driving end of the closing actuator is pulled and connected with the second pulling device;

[0009] In a preferred embodiment, the closing actuator includes: a closing actuator rod, a cover shell and a cylinder, an exhaust hole is opened on the side of the cylinder, one end of the closing actuator rod is fixedly connected to the second pulling device, and the closing actuator rod drives the cover shell to cover or move away from the exhaust hole.

[0010] In a preferred embodiment, the first pulling device and the second pulling device are magnetic members that magnetically attract each other.

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

[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 piece.

[0013] In a preferred embodiment, the closing actuator rod includes: a sliding rod and a bending head, one end of the sliding rod is fixedly connected to the second pulling device, the other end of the sliding rod is integrally formed with the bending head, and the lower end of the bending head is fixedly connected to the cover shell.

[0014] In a preferred embodiment, support holes are opened on both sides of the upper end of the cylinder, the sliding rod is arranged through the support holes, and the support holes and the exhaust holes are not connected;

[0015] In a preferred embodiment, a push spring is sleeved between the cylinder and the bending head.

[0016] In a preferred embodiment, the closing actuator rod also includes: a limit seat, the lower end of which is fixedly connected to the outer wall of the ventilation duct, and a limit hole is opened on the upper side of the limit seat. The sliding rod passes through the limit hole to limit the second pulling device on the side of the limit hole away from the cylinder.

[0017] In a preferred embodiment, the upper side of the cylinder body close to the exhaust hole is a planar structure.

[0018] In a preferred embodiment, it further comprises: a sealing shell, wherein the sealing shell is sealingly connected to the outer wall of the ventilation duct, and the closing actuator and the second pulling device are both arranged inside the sealing shell.

[0019] In a preferred embodiment, an air inlet hole and an air outlet hole are opened inside the ventilation duct conductive sealing shell, and the cylinder is sealed and connected to the air outlet hole.

[0020] In a preferred embodiment, the lower end of the cylinder is open, the lower end of the cylinder is cylindrical, an external thread is provided on the outer wall of the cylinder, an internal thread is provided on the inner wall of the air outlet, and the lower end of the cylinder is sealed and connected to the inside of the air outlet;

[0021] In a preferred embodiment, the opening at the lower end of the cylinder is connected to the exhaust hole.

[0022] The ventilation duct pull-closing mechanism of the utility model has the following beneficial effects:

[0023] The ventilation duct pulling closing mechanism includes: a closing actuator, a first pulling device and a second pulling device, the first pulling device and the second pulling device have a pulling effect, and the driving end of the closing actuator is pulled and connected with the second pulling device; the closing actuator includes: a closing actuator rod, a cover and a cylinder, the side of the cylinder is provided with an exhaust hole, one end of the closing actuator rod is fixedly connected to the second pulling device, and the closing actuator rod drives the cover to cover or move away from the exhaust hole.

[0024] The problem in the prior art that a valve can only be closed by a closing structure inside the valve, but in order to add some auxiliary closing functions, such as timed closing, the structure of the entire valve is complicated, resulting in the valve being unable to be closed smoothly, which easily affects the closing effect of the valve.

[0025] The ventilation duct pull-closing mechanism has a reasonable overall structural design and can transmit the adsorption force of the magnet. The ventilation duct can be pushed through the closing execution structure to execute the closing and sealing function, especially through the extended cylinder structure, the closing execution rod can be easily slid horizontally to meet the sealing of the exhaust hole, so as to quickly and stably close and conduct the ventilation duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a structural schematic diagram of a ventilation duct pull-closing mechanism according to an embodiment of the present disclosure;

[0028] Figure 2 It is a schematic diagram of the ventilation duct structure of the ventilation duct pull-closing mechanism according to an embodiment of the present disclosure;

[0029] Figure 3 for Figure 2 A schematic diagram of the structure of a ventilation duct connection closing actuator of a ventilation duct pull closing mechanism according to an embodiment of the present disclosure is shown;

[0030] Figure 4 It is a structural schematic diagram of a closing actuator of a ventilation duct pull-closing mechanism according to an embodiment of the present disclosure;

[0031] Figure 5 It is a schematic structural diagram of a cylinder of a ventilation duct pull-closing mechanism according to an embodiment of the present disclosure.

[0032]

Main component symbol description

[0033] 01, ventilation duct; 011, air inlet; 012, air outlet;

[0034] 02. Valve body;

[0035] 03. Timer;

[0036] 1. The first pulling device;

[0037] 2. The second pulling device;

[0038] 3. Close the actuator;

[0039] 311, closing actuator rod; 3111, sliding rod; 3112, bending head; 3113, limit seat;

[0040] 312, cover; 313, cylinder; 314, exhaust hole; 315, cylinder; 316, support hole;

[0041] 42. Push spring;

[0042] 6. Sealed shell. DETAILED DESCRIPTION

[0043] The ventilation duct pulling and closing mechanism of the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments of the utility model.

[0044] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0046] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0047] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0048] like Figure 1-Figure 5 As shown, the ventilation duct pulling closing mechanism comprises: a closing actuator 3 capable of closing the ventilation duct 01, a first pulling device 1 and a second pulling device 2 that transmit a driving force to the closing actuator 3 through interaction. The first pulling device 1 and the second pulling device 2 have a pulling effect, and the driving end of the closing actuator 3 is pulled and connected with the second pulling device 2;

[0049] In order to facilitate the closing of the ventilation duct 01, ensure the closing effect, reduce the structural complexity of the entire closing actuator 3, and thus reduce the failure rate of the entire product. The closing actuator 3 includes: a closing actuator rod 311 that transmits motion, a cover 312 that closes the ventilation duct 01, and a cylinder 313 that changes the flow direction of gas in the ventilation duct 01. In order to facilitate the sealing and disconnection of the ventilation duct 01, an exhaust hole 314 is opened on the side of the cylinder 313, and one end of the closing actuator rod 311 is fixedly connected to the second pulling device 2, and the closing actuator rod 311 drives the cover 312 to cover or move away from the exhaust hole 314. The sealing and opening of the exhaust hole 314 by the cover 312 realizes the circuit breaking, closing and connection of the ventilation duct 01.

[0050] By arranging the first pulling device 1 on the mechanism that triggers the requirement, when the first pulling device 1 reaches the set requirement, it can pull the second pulling device 2, thereby realizing the driving effect on the closing actuator 3.

[0051] Here: the triggering requirement mechanism can be a variety of triggering requirements. For example, in the present application, it can be the timer 03 of the self-closing 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 absorbs the second pulling device 2, thereby realizing the lateral driving effect on the closing actuator 3. Then, the exhaust hole 314 is sealed by the cover 312, so that the ventilation duct 01 can be conveniently closed.

[0052] Preferably, the first pulling device 1 is arranged at the position of the timer at zero. When the timer 03 rotates to zero, the first pulling device 1 and the second pulling device 2 act.

[0053] 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 function between the first pulling device 1 and the second pulling device 2 can be better realized.

[0054] In order to ensure the compactness of the structure, the first pulling device 1 and the second pulling device 2 can achieve the effect between them when they reach the set distance position (the closest position). Therefore, it is preferred that the first pulling device 1 and the second pulling device 2 are magnetic parts that have a mutual magnetic attraction effect. The timer rotates during use, and 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 absorbs the second pulling device 2, thereby pulling the closing actuator 3 to achieve the closing of the ventilation duct 01.

[0055] The first pulling device 1 and the second pulling device 2 are magnets respectively;

[0056] Alternatively, one of the first pulling device 1 and the second pulling device 2 is a magnet and the other is a magnetic material (one is a magnet and the other is a material that can be absorbed by the magnet (including a magnet)).

[0057] In one embodiment, the first pulling device 1 and the second pulling device 2 are magnets respectively; although the two magnets slightly increase the cost, the magnetic effect is good and can ensure the smooth progress of the driving action.

[0058] 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. 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, the cost of selecting a permanent magnet is reduced, and the magnetic material (such as an iron block) is low in cost.

[0059] In a preferred embodiment, the closing actuator rod 311 includes: a sliding rod 3111 for sliding guidance and a bending head 3112 extending downward to meet the sealing function, one end of the sliding rod 3111 is fixedly connected to the second pulling device 2, and the other end of the sliding rod 3111 is integrally formed with the bending head 3112, and the lower end of the bending head 3112 is fixedly connected to the cover 312. The cover 312 is used to close the circuit and open the passage of the ventilation duct 01.

[0060] In order to support the sliding rod 3111 and ensure the sliding stability of the sliding rod 3111, support holes 316 are provided on both sides of the upper end of the cylinder 313, and the sliding rod 3111 is arranged through the support holes 316 to ensure the support of the sliding rod 3111. To avoid leakage at the support hole 316 and the inability to completely cut off the ventilation pipe 01, the support hole 316 and the exhaust hole 314 are non-conductive, that is, the exhaust hole 314 is only opened downward, to ensure that the gas directly flows into the ventilation pipe 01 through the exhaust hole 314.

[0061] Of course, in order to meet the rebound of the cover 312 and to move away from the exhaust hole 314 so as to achieve the conduction of the ventilation duct 01, a push spring 42 is sleeved between the cylinder 313 and the bending head 3112. The push spring 42 is in a compressed state. When the first pulling device 1 and the second pulling device 2 move away and lose the adsorption force, the cover 312 can be pushed by the push spring 42 to meet the conduction of the ventilation duct 01.

[0062] In order to limit the second pulling device 2, ensure that when the first pulling device 1 approaches, it can have sufficient adsorption force on the second pulling device 2, so as to ensure that the closing execution action of the closing actuator 3 is realized. The closing execution rod 311 also includes: a limiting seat 3113, the lower end of the limiting seat 3113 is fixedly connected to the outer wall of the ventilation pipe 01, and a limiting hole is opened on the upper side of the limiting seat 3113. The sliding rod 3111 passes through the limiting hole and limits the second pulling device 2 on the side of the limiting hole away from the cylinder 313. When the first pulling device 1 is away from the second pulling device 2, the push spring 42 pushes the sliding rod 3111 to slide, and the position of the second pulling device 2 is limited by the limiting seat 3113, thereby realizing the limitation of the sliding distance of the sliding rod 3111. When the exhaust hole 314 has sufficient exhaust space, the sliding rod 3111 can be limited from sliding, so as to ensure that the first pulling device 1 can stably adsorb the second pulling device 2, thereby meeting the closing of the ventilation pipe 01.

[0063] In order to facilitate the sealing effect of the exhaust hole 314 and avoid leakage of the exhaust hole 314 in the closed state, which causes the entire ventilation duct 01 to be unable to be disconnected, the upper side of the cylinder 313 near the exhaust hole 314 is a flat structure. The end surface of the exhaust hole 314 with a flat structure can ensure the sealing effect of the cover 312 on the exhaust hole 314.

[0064] In order to seal the gas flowing out of the gas outlet 012 and the gas inlet 011 to prevent leakage, it also includes: a sealing shell 6, which is sealed and connected to the outer wall of the ventilation pipe 01, and the closing actuator 3 and the second pulling device 2 are both arranged 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 absorb the second pulling device 2 inside the sealing shell 6.

[0065] In order to satisfy the conduction function of the cylinder 313 for the gas, and to seal the exhaust hole 314 to realize the closing of the ventilation duct 01, the ventilation duct 01 conduction sealing shell 6 is provided with an inlet hole 011 and an outlet hole 012, and the cylinder 313 is arranged at the outlet hole 012. Of course, the ventilation duct 01 is a sealed structure at the position between the inlet hole 011 and the outlet hole 012.

[0066] In order to satisfy the connection function of the cylinder 313, the cylinder 313 can also satisfy the conduction function of the gas. The lower end of the cylinder 313 is open, and the lower end of the cylinder 313 is cylindrical. An external thread is provided on the outer wall of the cylinder 315, and an internal thread is provided on the inner wall of the gas outlet 012. The lower end of the cylinder 315 is sealed and connected to the inside of the gas outlet 012;

[0067] The opening at the lower end of the cylinder 313 is connected to the exhaust hole 314. The gas is ensured to flow in the ventilation pipe 01 as follows: it flows from the air inlet 011 into the sealing shell 6, and then flows from the exhaust hole 314 along the air outlet 012 into the ventilation pipe 01, thereby conveniently realizing the sealing and circuit-breaking function of the cover shell 312.

[0068] The above description 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 pull-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, and the driving end of the closing actuator (3) is connected to the second pulling device (2) by pulling; The closing actuator (3) comprises: a closing actuator rod (311), a cover (312) and a cylinder (313); a vent hole (314) is provided on the side of the cylinder (313); one end of the closing actuator rod (311) is fixedly connected to the second pulling device (2); the closing actuator rod (311) drives the cover (312) to cover or move away from the vent hole (314).

2. The ventilation duct pull-to-close 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 pull-to-close 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 pull-to-close mechanism according to any one of claims 1 to 3, characterized in that: The closing actuator rod (311) comprises: a sliding rod (3111) and a bending head (3112); one end of the sliding rod (3111) is fixedly connected to the second pulling device (2); the other end of the sliding rod (3111) is integrally formed with the bending head (3112); the lower end of the bending head (3112) is fixedly connected to the cover shell (312).

5. The ventilation duct pull-to-close mechanism according to claim 4, characterized in that: Support holes (316) are provided on both sides of the upper end of the cylinder (313), the sliding rod (3111) is arranged through the support holes (316), and the support holes (316) and the exhaust holes (314) are not connected; A push spring (42) is sleeved between the cylinder (313) and the bending head (3112).

6. The ventilation duct pull-to-close mechanism according to claim 5, characterized in that: The closing actuator rod (311) further comprises: a limiting seat (3113), the lower end of which is fixedly connected to the outer wall of the ventilation duct (01), a limiting hole is provided on the upper side of the limiting seat (3113), the sliding rod (3111) passes through the limiting hole, and limits the second pulling device (2) on the side of the limiting hole away from the cylinder (313).

7. The ventilation duct pull-to-close mechanism according to claim 5, characterized in that: The upper side of the cylinder (313) close to the exhaust hole (314) is a planar structure.

8. The ventilation duct pull-to-close mechanism according to any one of claims 1 to 3, characterized in that: Also includes: A sealing shell (6), wherein the sealing shell (6) is sealingly connected to the outer wall of the ventilation duct (01), and the closing actuator (3) and the second pulling device (2) are both arranged inside the sealing shell (6).

9. The ventilation duct pull-to-close mechanism according to claim 8, characterized in that: The ventilation pipe (01) is connected to the sealing shell (6) and is provided with an air inlet (011) and an air outlet (012), and the cylinder (313) is sealed and connected to the air outlet (012).

10. The ventilation duct pull-to-close mechanism according to claim 9, characterized in that: The lower end of the cylinder (313) is open, and the lower end of the cylinder (313) is cylindrical. An external thread is provided on the outer wall of the cylinder (315), and an internal thread is provided on the inner wall of the air outlet (012). The lower end of the cylinder (315) is sealed and connected to the inside of the air outlet (012); The opening at the lower end of the cylinder (313) is in communication with the exhaust hole (314).

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