Ventilation pipeline pushing closing device

Abstract

The utility model discloses a gas pipeline pushing closing device, a first driving mechanism and a second driving mechanism are used for driving, and the driving end of a closing executing mechanism is fixedly connected with the second driving mechanism; an exhaust hole is formed in the side portion of a cylinder body of the closing execution mechanism, one end of the closing execution rod is fixedly connected with the second driving mechanism, 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, in order to achieve closing of a valve body, closing can only be achieved through a closing structure in the valve body; particularly, some auxiliary closing functions are added to the valve body, for example, when the valve body is closed regularly, the structure of the whole valve body is complex, the valve body cannot be smoothly closed, and the closing effect of the valve body is easily affected. The ventilation pipeline pushing closing device is reasonable in overall structural design, closing of the closing executing mechanism can be achieved through the pushing effect of the first driving mechanism, the driving structure is relatively stable, and the closing stability of the ventilation pipeline can be guaranteed.

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 ventilation pipeline pushing and closing device. 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 hazards when using domestic gas pipelines. People need to close the main gas valve due to frequent 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 valve bodies (such as self-closing valves or pressure reducing valves). However, due to the small size of the valve body, but to achieve the timing function, a relatively complex structure is required, resulting in the inability to well achieve the closing of the valve body by the timing function.

[0005] It can be seen that in the prior art, in order to achieve closing, the valve body can only be realized through the closing structure inside the valve body; especially when some auxiliary closing functions are added to the valve body, such as timing closing, the structure of the whole valve body is complex, resulting in the inability to smoothly close the valve body, which is likely to affect the closing effect of the valve body. Summary of the Utility Model

[0006] In view of this, the main purpose of the utility model is to provide a ventilation pipeline pushing and closing device with a reasonable overall structural design, a relatively stable driving structure, and can ensure the stable closing of the ventilation pipeline.

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

[0008] A ventilation pipeline pushing and closing device includes: a closing execution mechanism, a first driving mechanism, and a second driving mechanism. The first driving mechanism and the second driving mechanism act in a driving manner, and the driving end of the closing execution mechanism is fixedly connected to the second driving mechanism;

[0009] In a preferred embodiment, the closing execution mechanism includes: a closing execution rod, a housing, and a cylinder body. An exhaust hole is opened on the side of the cylinder body. One end of the closing execution rod is fixedly connected to the second driving mechanism, and the closing execution rod drives the housing to cover or move away from the exhaust hole.

[0010] In a preferred embodiment, the first driving mechanism is a ring groove structure, and a groove is formed in the ring groove structure. The end of the second driving mechanism slides along the ring groove structure and extends into or slides out of the groove.

[0011] In a preferred embodiment, the second driving mechanism includes a sliding head, a sliding rod, and a telescopic diaphragm. The sliding head is fixedly connected to one end of the sliding rod, the other end of the sliding rod is fixedly connected to the closing actuator rod, and the outer wall of the sliding rod is hermetically and fixedly connected to the telescopic diaphragm.

[0012] In a preferred embodiment, it further includes a sealing shell, which is hermetically connected to the outer wall of the ventilation pipe, and the closing actuator mechanism is arranged inside the sealing shell;

[0013] In a preferred embodiment, a driving hole is formed through the sealing shell, and the sliding rod extends along the driving hole;

[0014] In a preferred embodiment, the second driving mechanism further includes a pressing shell. The edge of the telescopic diaphragm is pressed and sealed and fixed at the edge of the driving hole through the pressing shell, and the end of the sliding rod passes through the pressing shell.

[0015] In a preferred embodiment, the second driving mechanism further includes a tension spring. The tension spring is sleeved on the outer wall of the sliding rod. One end of the tension spring is fixedly connected to the inner wall of the pressing shell, and the other end of the tension spring is fixedly connected to the outer wall of the sliding rod, so that the tension spring pulls the sliding rod to slide.

[0016] In a preferred embodiment, the closing actuator rod includes a sliding rod and a bent head. One end of the sliding rod is fixedly connected to the sliding rod, the other end of the sliding rod is integrally formed with the bent head, and the lower end of the bent head is fixedly connected to the cover shell.

[0017] In a preferred embodiment, support holes are formed through both sides of the upper end of the cylinder body, the sliding rod passes through the support holes, and the support holes are not in communication with the exhaust holes.

[0018] In a preferred embodiment, the closing actuator rod further includes a limit seat. The lower end of the limit seat is fixedly connected to the outer wall of the ventilation pipe, and a limit hole is formed on the upper side of the limit seat. The sliding rod passes through the limit hole;

[0019] In a preferred embodiment, the upper side of the cylinder body near the exhaust hole is a planar structure.

[0020] In a preferred embodiment, an air inlet hole and an air outlet hole are formed through the ventilation pipe and communicate with the inside of the sealing shell, and the cylinder body is hermetically connected to the air outlet hole.

[0021] In a preferred embodiment, the lower end of the cylinder body is open, the lower end of the cylinder body 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 hole, and the lower end of the cylinder is hermetically connected inside the air outlet hole;

[0022] In a preferred embodiment, the opening at the lower end of the cylinder body communicates with the exhaust hole.

[0023] The air vent pipe pushing and closing device of the present invention has the following beneficial effects:

[0024] The air vent pipe pushing and closing device includes: a closing actuator, a first driving mechanism, and a second driving mechanism. The first driving mechanism and the second driving mechanism act in a driving manner, and the driving end of the closing actuator is fixedly connected to the second driving mechanism; the closing actuator includes: a closing actuator rod, a housing, and a cylinder body. An exhaust hole is provided on the side of the cylinder body. One end of the closing actuator rod is fixedly connected to the second driving mechanism, and the closing actuator rod drives the housing to cover or move away from the exhaust hole.

[0025] It solves the problem in the prior art that in order to achieve closing, the valve body can only be achieved through the closing structure inside the valve body; especially when some auxiliary closing functions are added outside the valve body, such as timed closing, the structure of the entire valve body is complex, resulting in the valve body being unable to close smoothly, which easily affects the closing effect of the valve body.

[0026] The overall structure of the air vent pipe pushing and closing device is reasonably designed. Through the pushing action of the first driving mechanism, the closing of the closing actuator can be achieved, and the driving structure is relatively stable, which can ensure the closing stability of the air vent pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention 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 invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Figure 1 FIG. is a schematic structural diagram of an air vent pipe pushing and closing device according to an embodiment of the present disclosure;

[0029] Figure 2 FIG. is a schematic structural diagram of the air vent pipe of the air vent pipe pushing and closing device according to an embodiment of the present disclosure;

[0030] Figure 3 is Figure 2Schematic diagram of the structure of the ventilation pipe connecting the closing actuator of the ventilation pipe pushing and closing device according to an embodiment of the present disclosure;

[0031] Figure 4 Schematic diagram of the structure of the closing actuator of the ventilation pipe pushing and closing device according to an embodiment of the present disclosure;

[0032] Figure 5 Schematic diagram of the structure of the cylinder body of the ventilation pipe pushing and closing device according to an embodiment of the present disclosure.

[0033]

Description of Main Component Symbols

[0034] 01, ventilation pipe; 011, air inlet hole; 012, air outlet hole;

[0035] 02, valve body;

[0036] 03, timer;

[0037] 1, first driving mechanism;

[0038] 11, annular groove structure; 12, groove;

[0039] 2, second driving mechanism;

[0040] 21, sliding head; 22, sliding rod; 23, telescopic diaphragm; 24, pressing shell; 25, tension spring;

[0041] 3, closing actuator;

[0042] 311, closing actuator rod; 3111, sliding rod; 3112, bent head; 3113, limiting seat;

[0043] 312, housing; 313, cylinder body; 314, exhaust hole; 315, cylinder; 316, support hole;

[0044] 6, sealing shell. Detailed Embodiment

[0045] The ventilation pipe pushing and closing device of the present invention will be further described in detail below with reference to the accompanying drawings and the embodiments of the present invention.

[0046] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can 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.

[0047] 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 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.

[0048] 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 such used 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 comprises a series of steps or units is not necessarily 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.

[0049] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper", etc. can 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 encompass different orientations in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is inverted, the device described as "above" or "over" 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.

[0050] As Figures 1-5 shown, the ventilation duct pushing closing device includes: a closing actuator 3 that can perform a closing action on the ventilation duct 01; a first driving mechanism 1 and a second driving mechanism 2 that transmit driving force to the closing actuator 3 through interaction, and the first driving mechanism 1 and the second driving mechanism 2 have a driving effect (mainly a pushing effect here), and the driving end of the closing actuator 3 is fixedly connected to the second driving mechanism 2; thus, the action of the closing actuator 3 is driven by the second driving mechanism 2.

[0051] In order to conveniently close the ventilation pipe 01, ensure the closing effect, and reduce the structural complexity of the entire closing actuator 3, thereby reducing the failure rate of the entire product. The closing actuator 3 includes: a closing actuator rod 311 for transmitting motion, a housing 312 for opening and closing the ventilation pipe 01, and a cylinder 313 for changing the gas flow direction in the ventilation pipe 01. In order to facilitate the sealing and interruption of the ventilation pipe 01, an exhaust 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 driving mechanism 2, and the closing actuator rod 311 drives the housing 312 to cover or move away from the exhaust hole 314. By sealing and opening the exhaust hole 314 with the housing 312, the interruption and conduction of the ventilation pipe 01 are realized.

[0052] In order to achieve the functions of limiting and pushing, the first driving mechanism 1 is a ring groove structure 11 (for example, a ring groove is convexly provided on the side of the timer 03 housing of the valve body 02). A groove 12 is provided in the ring groove structure 11. The end of the second driving mechanism 2 slides along the ring groove structure 11 and extends into or slides out of the groove 12. When the timer rotates to zero, the second driving mechanism 2 slides along the ring groove structure 11 into the groove 12, realizing the sliding of the second driving mechanism 2 and meeting the closing action of the ventilation pipe.

[0053] In order to cooperate with the ring groove structure 11 and ensure that both ends of the second driving mechanism 2 are in a sealed state to meet the requirement of no gas leakage. The second driving mechanism 2 includes: a sliding head 21 that slides along the ring groove structure 11, a sliding rod 22 that extends a certain length, and a telescopic diaphragm 23 that isolates both ends of the sliding rod 22. The spherical sliding head 21 is fixedly connected to one end of the sliding rod 22, the other end of the sliding rod 22 is fixedly connected to the closing actuator rod 311, and the outer wall of the sliding rod 22 is sealed and fixedly connected to the telescopic diaphragm 23. During the sliding process of the sliding rod 22, the deformation of the telescopic diaphragm 23 can ensure that both sides of the telescopic diaphragm 23 are in a sealed and isolated state.

[0054] In order to achieve the sealing effect of the closing actuator 3 and ensure the requirement of working seal. It also includes: a sealing shell 6, the sealing shell 6 is sealingly connected to the outer wall of the ventilation pipe 01, and the closing actuator 3 is arranged inside the sealing shell 6;

[0055] In order to meet the cooperation between the extension of the sliding rod 22 and the first driving mechanism 1, a driving hole is provided through the sealing shell 6, and the sliding rod 22 extends along the driving hole;

[0056] Further, in order to satisfy the fixed connection function of the telescopic diaphragm 23, on the premise that the sealing housing 6 can meet the requirement for the sliding rod 22 to extend, the sealing requirement can also be ensured. The second driving mechanism 2 further includes: a pressing housing 24 for pressing and sealing the telescopic diaphragm 23. The edge of the telescopic diaphragm 23 is pressed and sealed and fixed at the edge of the driving hole through the pressing housing 24, and the end of the sliding rod 22 passes through the pressing housing 24. Through the telescopic diaphragm 23, not only the sealing function of the sealing housing 6 is realized, but also the telescopic diaphragm 23 can be pressed and fixed, so that the sliding function of the sliding rod 22 can be satisfied through the telescopic diaphragm 23, and the sealing effect of the sealing housing 6 is ensured.

[0057] In order to enable the second driving mechanism 2 to drive the closing actuator 3 to close the ventilation pipeline at zero time. The second driving mechanism 2 further includes: a tension spring 25 for providing a pulling force. The tension spring 25 is sleeved on the outer wall of the sliding rod 22. One end of the tension spring 25 is fixedly connected to the inner wall of the pressing housing 24, and the other end of the tension spring is fixedly connected to the outer wall of the sliding rod 22, so that the tension spring 25 pulls the sliding rod 22 to slide. Under the action of the tension spring 25, a driving force is given to the sliding rod 22. When the support of the annular groove structure is lost, the tension spring 25 pulls the sliding rod to slide, and the closing actuator 3 closes the ventilation pipeline 01.

[0058] In a preferred embodiment, the closing actuator rod 311 includes: a sliding rod 3111 for sliding and guiding and a bent head 3112 extending downward to meet the sealing function. One end of the sliding rod 3111 is fixedly connected to the sliding rod 22, and the other end of the sliding rod 3111 is integrally formed with the bent head 3112. The lower end of the bent head 3112 is fixedly connected to the housing 312. The housing 312 is used to close and cut off and open the passage of the ventilation pipeline 01.

[0059] In order to support the sliding rod 3111 and ensure the stability of the sliding of the sliding rod 3111. Support holes 316 are opened on both sides of the upper end of the through cylinder 313, and the sliding rod 3111 passes through the support holes 316 to ensure the support of the sliding rod 3111. To avoid air leakage at the support holes 316 and unable to completely cut off the ventilation pipeline 01, the support holes 316 are not communicated with the exhaust holes 314, that is, the exhaust holes 314 only open downward to ensure that the gas directly flows into the ventilation pipeline 01 through the exhaust holes 314.

[0060] In order to support the sliding rod 3111, the closing actuator rod 311 further includes: a limit seat 3113. The lower end of the limit seat 3113 is fixedly connected to the outer wall of the ventilation pipeline 01, and a limit hole is opened on the upper side of the limit seat 3113, and the sliding rod 3111 passes through the limit hole.

[0061] To facilitate meeting the sealing effect of the exhaust hole 314 and avoid air leakage from the exhaust hole 314 in the closed state, which may cause the problem that the entire ventilation pipeline 01 cannot achieve a cut-off. The upper side of the cylinder body 313 near the exhaust hole 314 is a planar structure. The end face of the exhaust hole 314 with a planar structure can ensure the sealing effect of the cover 312 on the exhaust hole 314.

[0062] To meet the conduction function of the cylinder body 313 for gas and to close the ventilation pipeline 01 when the exhaust hole 314 is sealed. The ventilation pipeline 01 conducts and seals the inside of the housing 6 with an air inlet hole 011 and an air outlet hole 012 provided, and the cylinder body 313 is provided at the air outlet hole 012. Of course, between the air inlet hole 011 and the air outlet hole 012, the ventilation pipeline 01 is a sealed structure.

[0063] To meet the connection function of the cylinder body 313 and also to meet the conduction function of the cylinder body 313 for gas. The lower end of the cylinder body 313 is open, and the lower end of the cylinder body 313 is cylindrical. External threads are provided on the outer wall of the cylinder 315, and internal threads are provided on the inner wall of the air outlet hole 012. The lower end of the cylinder 315 is hermetically connected inside the air outlet hole 012;

[0064] The opening at the lower end of the cylinder body 313 is in communication with the exhaust hole 314. The flow of gas in the ventilation pipeline 01 is ensured as follows: it flows into the inside of the housing 6 from the air inlet hole 011, and then flows into the ventilation pipeline 01 along the air outlet hole 012 from the exhaust hole 314, thus facilitating the sealing and cut-off function of the cover 312.

[0065] 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 push closing device, characterized in that: include: A closing actuator (3), a first drive mechanism (1) and a second drive mechanism (2), wherein the first drive mechanism (1) and the second drive mechanism (2) act in a driving manner, and a driving end of the closing actuator (3) is fixedly connected to the second drive mechanism (2); The closing actuator (3) comprises a closing actuator rod (311), a cover shell (312) and a cylinder (313); a vent hole (314) is provided on a side of the cylinder (313); one end of the closing actuator rod (311) is fixedly connected to the second driving mechanism (2); the closing actuator rod (311) drives the cover shell (312) to cover or move away from the vent hole (314).

2. The ventilation duct push closing device according to claim 1, characterized in that: The first driving mechanism (1) is an annular groove structure (11), a groove (12) is provided in the annular groove structure (11), and an end portion of the second driving mechanism (2) slides along the annular groove structure (11) and extends into the groove (12) or slides out of the groove (12).

3. The ventilation duct push closing device according to claim 2, characterized in that: The second driving mechanism (2) comprises: a slider (21), a slide rod (22) and a telescopic membrane (23); the slider (21) is fixedly connected to one end of the slide rod (22); the other end of the slide rod (22) is fixedly connected to the closing actuator rod (311); and the outer wall of the slide rod (22) is sealingly fixedly connected to the telescopic membrane (23).

4. The ventilation duct push closing device according to claim 3, characterized in that: Also includes: A sealing shell (6), the sealing shell (6) being sealingly connected to the outer wall of the ventilation duct (01), and the closing actuator (3) being arranged inside the sealing shell (6); A driving hole is formed through the sealing shell (6), and the sliding rod (22) extends out along the driving hole; The second driving mechanism (2) further comprises: a compression shell (24), the edge of the telescopic membrane (23) being compressed and sealed to the edge of the driving hole by the compression shell (24), and the end of the sliding rod (22) passing through the compression shell (24).

5. The ventilation duct push closing device according to claim 4, characterized in that: The second driving mechanism (2) further comprises: a tension spring (25), wherein the tension spring (25) is sleeved on the outer wall of the slide rod (22), one end of the tension spring (25) is fixedly connected to the inner wall of the compression shell (24), and the other end of the tension spring is fixedly connected to the outer wall of the slide rod (22), so that the tension spring (25) pulls the slide rod (22) to slide.

6. The ventilation duct push closing device according to any one of claims 3 to 5, 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 sliding rod (22); 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 shell (312).

7. The ventilation duct push closing device according to claim 6, 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.

8. The ventilation duct push closing device according to claim 7, characterized in that: The closing actuator rod (311) further comprises: a limit seat (3113), the lower end of the limit seat (3113) being fixedly connected to the outer wall of the ventilation duct (01), the upper side of the limit seat (3113) being provided with a limit hole, and the sliding rod (3111) passing through the limit hole; The upper side of the cylinder (313) close to the exhaust hole (314) is a planar structure.

9. The ventilation duct push closing device according to claim 8, characterized in that: The ventilation duct (01) is connected to the sealing shell (6) and is provided with an air inlet hole (011) and an air outlet hole (012). The cylinder (313) is sealed and connected to the air outlet hole (012).

10. The ventilation duct push closing device according to claim 9, characterized in that: The lower end of the cylinder (313) is open, the lower end of the cylinder (313) is cylindrical, an external thread is provided on the outer wall of the cylinder (315), an internal thread is provided on the inner wall of the air outlet (012), and 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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