CN216200933U - Timing self-closing valve for gas pipeline - Google Patents

Abstract

The utility model discloses a timing self-closing valve of a gas pipeline, which comprises: valve body, case, valve gap and valve rod subassembly. The valve comprises a valve body, a valve core, a valve rod assembly, a timing mechanism and a valve rod assembly, wherein the valve core is arranged between the valve body and the valve cover, the valve rod assembly is in driving connection with the valve core, the other end of the valve rod assembly penetrates through the valve cover to extend out of the valve cover, the timing mechanism is arranged on the upper side of the valve cover and is in limiting connection with the valve rod assembly, and the timing mechanism is enabled to limit the valve rod assembly to extend into the valve core. In order to realize the automatic closing of the gas source without manual intervention on the premise of keeping the original self-closing valve function, the explosion accident caused by open fire after gas leakage due to various reasons such as forgetting to close the fire, forgetting to close the valve, biting by rats and insects, aging of the hose, falling off of the hose and the like in daily life is solved. According to the timing self-closing valve for the gas pipeline, due to the arrangement of the timing mechanism, a user can adjust the timing mechanism in a timing mode according to own use requirements in the use process, and the timing mechanism automatically controls the self-closing valve to close after use, so that the use safety performance is guaranteed.

Description

Timing self-closing valve for gas pipeline

Technical Field

The utility model relates to the technical field of structural design of gas pipeline self-closing valves used for gas pipelines, in particular to a timing self-closing valve for a gas pipeline.

Background

As an energy source, gas has a wide range of applications in industrial production or daily life. The gas is generally transmitted through a pipeline, and once leakage occurs when the gas is transmitted in the pipeline, the consequences caused by the leakage can be serious. When the gas leaks in the pipeline, the control valve for preventing gas leakage is installed on the general pipeline in order to take measures in time.

In daily life, there are some potential safety hazards problems when using domestic gas pipeline. People often need to close the gas main valve when going out, or forget to close the valve due to negligence when the household gas pipeline is not used, which is easy to cause gas poisoning or fire, explosion and other accidents.

In daily life, the explosion accident caused by open fire after gas leakage is caused by various reasons such as forgetting to close fire, forgetting to close a valve, biting by rats and insects, aging of a hose, falling of the hose and the like.

In the prior art, the defect that a gas pipeline which can be automatically closed at regular time under the non-use state of a user is easy to cause potential safety hazards in gas use is overcome.

SUMMERY OF THE UTILITY MODEL

In view of the above, the main object of the present invention is to provide a gas pipeline timing self-closing valve which can satisfy the requirements of timing self-closing and ensuring the use safety.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

the timing self-closing valve for the gas pipeline comprises: the valve comprises a valve body, a valve core, a valve cover and a valve rod assembly; the valve comprises a valve body, a valve cover, a valve core, a valve rod assembly, a timing mechanism and a valve rod assembly, wherein the valve cover is connected to the upper side of the valve body, the valve core is arranged between the valve body and the valve cover, the valve rod assembly is in driving connection with the valve core, the other end of the valve rod assembly penetrates through and extends out of the valve cover, the timing mechanism is arranged on the upper side of the valve cover, and the timing mechanism is in limiting connection with the valve rod assembly to enable the timing mechanism to limit the valve rod assembly to extend into the valve core.

In a preferred embodiment, the valve cover includes: the sealing device comprises a cover body, a sealing cover and a connecting cylinder, wherein the lower end of the cover body is connected with a valve body in a buckling mode, the upper end of the cover body is in integrated forming and sealing connection with the sealing cover, the middle of the sealing cover is connected with the connecting cylinder, a limiting opening is formed in the connecting cylinder, which is close to the upper surface of the sealing cover, so that a sleeve part stretches out of the connecting cylinder along the connecting cylinder, and a positioning fastener stretches into the limiting opening and the sleeve part to be matched and limited.

In a preferred embodiment, a guide seat is arranged between the connecting cylinder and the sealing cover, and the limiting opening is formed in the middle of the guide seat; the guide seat is a circular boss convexly arranged on the outer wall of the lower end of the connecting cylinder, and the limiting opening is formed in the middle of the circular boss; an installation cavity is formed below the circular boss, and the interior of the installation cavity is communicated with the inner cavity of the cover body;

in a preferred embodiment, the cap body, the closure cap, the connector barrel and the circular boss are integrally formed. In a preferred embodiment, the upper surface of the cover is planar; the upper surface of the sealing cover is provided with a crescent groove structure, so that a timing gear set of the timing mechanism is connected inside the groove structure.

In a preferred embodiment, the bottom of the groove structure is provided with at least one positioning hole and at least one connecting hole, and the positioning member and the fixing member pass through the positioning hole and the connecting hole to position and connect the timing gear set.

In a preferred embodiment, one end of the upper surface of the sealing cover, which is close to the timing gear set, is provided with a positioning fastener hinge shaft, so that the positioning fastener is hinged to the positioning fastener hinge shaft and extends into the limiting opening or is separated from the limiting opening in a rotating manner.

In a preferred embodiment, the outer wall of the upper end of the connecting cylinder is provided with a spring connecting and fixing notch, the cross section of the spring connecting and fixing notch is of a trapezoidal structure, and the opening size of the spring connecting and fixing notch is smaller than the size of the bottom of the spring connecting and fixing notch;

in a preferred embodiment, a clamp groove is formed in the outer wall of the connecting cylinder at the position below the spring connecting and fixing notch, so that the connecting cylinder is in limit connection with the timing knob.

In a preferred embodiment, the valve stem assembly comprises: the self-closing valve comprises a valve rod, a lower pressing disc and a sleeve piece, wherein the sleeve piece is connected to the upper side of the lower pressing disc, a pushing piece is sleeved on the outer wall of the sleeve piece and arranged in the mounting cavity, and the pushing piece pushes the lower pressing disc and the lower pressing disc to push the self-closing valve to use the valve rod.

In a preferred embodiment, one end of the sleeve part close to the lower pressure plate is provided with a limiting groove, a positioning fastener is arranged after penetrating through the connecting cylinder, and the positioning fastener extends into the limiting groove to limit the sleeve part. In a preferred embodiment, the width of the limiting groove is greater than the thickness of the positioning fastener, and the distance required for separation between the armature at the end of the valve rod and the permanent magnet is less than or equal to the width of the limiting groove, so that the sleeve member can move upwards when the positioning fastener limits the limiting groove.

In a preferred embodiment, a pushing step is formed on the inner wall of the upper end of the sleeve member, and the pushing step is matched with the valve rod in a pushing connection mode, so that the valve rod is pushed to move upwards by the pushing step;

in a preferred embodiment, a key groove is formed in the upper end of the valve rod, a key is fixedly connected to the key groove, the outer diameter of the key is the same as the inner diameter of the pushing step, and the pushing step supports the key to push the valve rod to move upwards.

In a preferred embodiment, the distance of the push step from the upper end of the sleeve member is greater than the distance of downward movement of the valve stem when the self-closing valve is closed.

In a preferred embodiment, the positioning clamping piece is of a shifting piece structure, and one side of the positioning clamping piece is provided with a hinge hole, so that the positioning clamping piece is hinged to the upper side of the cover body of the self-closing valve.

In a preferred embodiment, a toggle bulge is arranged on the upper side of one end, far away from the hinge hole, of the positioning clamping piece, so that the toggle bulge is matched and connected with a timing mechanism of the timing self-closing valve, and the toggle bulge is pushed to extend out of the limiting groove.

In a preferred embodiment, the positioning clamping piece is of a triangular structure, the hinge hole is formed in one corner, the poking protrusion is integrally connected to the other corner, and the third corner of the positioning clamping piece extends into the limiting groove.

In a preferred embodiment, the positioning fastener is integrally connected with a supporting projection connected with the lower side surface of the poking projection. In a preferred embodiment, the poking bulge or the supporting bulge is connected with an elastic piece, and the elastic piece drives the positioning clamping piece to extend into the limiting groove. In a preferred embodiment, the elastic element is a tension spring.

In a preferred embodiment, the pushing member is a supporting spring, and the outer diameter of the supporting spring is smaller than the diameter of the lower pressure plate. In a preferred embodiment, the timing mechanism comprises: the method comprises the following steps: timing gear train, energy storage spare, timing knob, upper fixed plate and bottom plate. In a preferred embodiment, the upper fixing plate and the lower fixing plate are fixedly connected, and a rotating shaft of the timing gear set is hinged between the upper fixing plate and the lower fixing plate. In a preferred embodiment, the timing knob center is driven by meshing with the timing gear set. In a preferred embodiment, the energy storage part is connected between the timing knob and a valve cover of the timing self-closing valve, so that the energy storage part drives the timing knob to rotate.

In a preferred embodiment, the upper fixing plate and the lower fixing plate are crescent structures, and the outer diameter of the crescent structures is smaller than or equal to the outer diameter of the cover body of the timing self-closing valve. In a preferred embodiment, the lower fixing plate is fixedly connected inside the groove structure in a limiting manner.

In a preferred embodiment, the timing knob is in a cover structure, and the timing gear set is disposed inside the cover structure.

In a preferred embodiment, a through hole is formed in the middle of the timing knob, a connecting cylinder of the valve cover extends out of the through hole, and the energy storage part is connected to the upper surfaces of the connecting cylinder and the timing knob. In a preferred embodiment, a fixing groove is formed in the middle of the upper surface of the timing knob, the outer wall of the connecting cylinder is fixedly connected with the timing knob through a clamp spring, and the clamp spring is arranged inside the fixing groove. In a preferred embodiment, an energy storage member connecting wall is fixedly connected to the upper surface of the timing knob, the energy storage member connecting wall is provided with a plurality of energy storage member connecting walls, and a circular cavity structure is formed by the plurality of energy storage member connecting walls. In a preferred embodiment, one end of the energy storage member is connected between the two energy storage member connecting walls.

In a preferred embodiment, the timing knob the energy storage part connecting wall external area has been seted up protective cover and has been connected the notch, bottom surface fixedly connected with connector link under the protective cover, the connector link with notch cooperation joint is connected to the protective cover.

In a preferred embodiment, an outer region of the protective cover connection notch of the timing knob is provided with a ring-shaped sealing protrusion having a diameter smaller than an outer diameter of the protective cover.

In a preferred embodiment, the lower surface of the timing knob is provided with a support column around the through hole, the end part of the support column is convexly provided with a connecting column, and a first gear of the timing gear set is clamped with the connecting column. In a preferred embodiment, support post connecting walls are arranged between the support posts, and the support post connecting walls are arranged around the through holes. In a preferred embodiment, the timing knob outer wall is provided with a rotational timing mark.

The timing self-closing valve for the gas pipeline has the following beneficial effects:

the timing self-closing valve for the gas pipeline comprises: valve body, case, valve gap and valve rod subassembly. The valve comprises a valve body, a valve core, a valve rod assembly, a timing mechanism and a valve rod assembly, wherein the valve core is arranged between the valve body and the valve cover, the valve rod assembly is in driving connection with the valve core, the other end of the valve rod assembly penetrates through the valve cover to extend out of the valve cover, the timing mechanism is arranged on the upper side of the valve cover and is in limiting connection with the valve rod assembly, and the timing mechanism is enabled to limit the valve rod assembly to extend into the valve core.

In order to realize the automatic closing of the gas source without manual intervention on the premise of keeping the original self-closing valve function, the explosion accident caused by open fire after gas leakage due to various reasons such as forgetting to close the fire, forgetting to close the valve, biting by rats and insects, aging of the hose, falling off of the hose and the like in daily life is solved.

According to the timing self-closing valve for the gas pipeline, due to the arrangement of the timing mechanism, a user can adjust the timing mechanism in a timing mode according to own use requirements in the use process, and the timing mechanism automatically controls the self-closing valve to close after use, so that the use safety performance is guaranteed.

Drawings

FIG. 1 is a schematic structural diagram of a timing self-closing valve of a gas pipeline according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of a gas pipeline timing self-closing valve shown in FIG. 1 according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of a protective cover structure of a gas pipeline timing self-closing valve according to the present disclosure;

FIG. 4 is a schematic structural view of a timing knob of a timing self-closing valve of a gas pipeline according to the present disclosure;

FIG. 5 is a cross-sectional view of a timing knob of the timing self-closing valve for a gas pipeline shown in FIG. 4;

FIG. 6 is a top view of a timing knob of the timing self-closing valve for gas pipeline shown in FIG. 4;

FIG. 7 is a bottom view of a timing knob of the gas pipeline timing self-closing valve shown in FIG. 4;

FIG. 8 is a cross-sectional view of a timing mechanism of a gas pipeline timing self-closing valve according to the present disclosure;

FIG. 9 is a top view of a timing mechanism of the timing self-closing valve for a gas pipeline according to the present disclosure shown in FIG. 8;

FIG. 10 is a schematic structural view of the timing mechanism of the gas pipeline timing self-closing valve shown in FIG. 9 without an upper fixing plate;

FIG. 11 is a schematic structural diagram of a valve cover of a timing self-closing valve for a gas pipeline according to the present disclosure;

FIG. 12 is a sectional view taken along line A-A of a valve cover of the timing self-closing valve for the gas pipeline shown in FIG. 11;

FIG. 13 is a sectional view taken along line B-B of a valve cover of the timing self-closing valve for the gas pipeline shown in FIG. 12;

FIG. 14 is a top view of a valve cover of a timing self-closing valve for a gas pipeline according to the present disclosure;

FIG. 15 is a cross-sectional view taken along line E-E of a valve cover of the timing self-closing valve for the gas pipeline shown in FIG. 14;

FIG. 16 is a cross-sectional view taken along line C-C of a valve cover of the timing self-closing valve for the gas pipeline shown in FIG. 14;

FIG. 17 is a schematic structural diagram of a sleeve member of a timing self-closing valve for a gas pipeline according to the present disclosure;

FIG. 18 is a cross-sectional view of a sleeve member of the gas pipeline timing self-closing valve shown in FIG. 17;

FIG. 19 is a schematic view of a valve stem structure of a timing self-closing valve for a gas pipeline according to the present disclosure;

FIG. 20 is a cross-sectional view of the valve stem of the gas line timing self-closing valve pushed to a certain height by the sleeve member;

FIG. 21 is a cross-sectional view of the valve stem of the gas pipeline timing self-closing valve being pushed by the sleeve member;

FIG. 22 is a schematic structural view of a positioning fastener of a timing self-closing valve for a gas pipeline according to the present disclosure;

FIG. 23 is a front view of a positioning clip of the timing self-closing valve for gas pipeline of the present disclosure.

[ description of main reference symbols ]

1. A cover body; 2. sealing the cover; 21. installing a cavity; 22. a hinge shaft of the positioning clamping piece; 23. a groove structure; 231. positioning holes; 232. connecting holes; 3. a connecting cylinder; 31. the spring is connected with the fixed notch; 32. A clamp groove; 33. a guide seat; 34. a limiting port; 4. positioning the clamping piece; 41. a hinge hole; 42. poking the protrusion; 43. a support boss; 44. an elastic member;

5. a timing knob; 51. a through hole; 52. fixing grooves; 53. the energy storage part is connected with the wall; 54. the protective cover is connected with the notch; 541. a ring-shaped sealing bulge; 55. a support pillar; 56. connecting columns; 57. the support column is connected with the wall; 58. a shift limiting sheet; 59. rotating the timing mark;

6. a sleeve member; 61. a limiting groove; 62. pushing the step; 63. a pusher member; 64. a lower platen;

7. a valve body; 8. a clamp spring; 9. a timing mechanism; 91. an upper fixing plate; 92. a lower fixing plate; 93. a timing gear set; 931. a rotating shaft;

10. a protective cover; 101. a connecting buckle; 111. an energy storage member; 11. a card key;

01. lifting the button; 02. an armature; 03. a permanent magnet; 04. a valve stem; 041. a key clamping groove; 05. a valve core.

Detailed Description

The timing self-closing valve for the gas pipeline is further described in detail with reference to the attached drawings and the embodiment of the utility model.

As shown in fig. 1-23, the timing self-closing valve for gas pipeline comprises: the valve body 7 is connected with the gas pipeline, the valve core 05 is used for conducting or closing the gas pipeline, the valve cover which can be provided with other auxiliary components and the valve rod assembly is used for driving the valve core 05 to open or close the valve body 7. The upper side of the valve body 7 is connected with a valve cover, the valve core 05 is arranged between the valve body 7 and the valve cover, the valve rod assembly is in driving connection with the valve core 05, the other end of the valve rod assembly penetrates through the valve cover to extend out, and a user can conveniently control the opening and closing of the self-closing valve through the valve rod assembly.

In order to realize the automatic closing of the gas source without manual intervention on the premise of keeping the original self-closing valve function, the explosion accident caused by open fire after gas leakage due to various reasons such as forgetting to close the fire, forgetting to close the valve, biting by rats and insects, aging of the hose, falling off of the hose and the like in daily life is solved. The timing mechanism 9 is arranged on the upper side of the valve cover, the timing mechanism 9 is in limit connection with the valve rod assembly, the timing mechanism 9 is used for limiting the valve rod assembly to extend into the valve core 05, and automatic control of closing of the self-closing valve is achieved.

Of course, the valve core 05 includes functions of an overpressure automatic switch, an underpressure automatic switch, an overflow automatic switch and the like, which are commonly used in the prior art, and parts such as a valve plug and the like, which are not described herein again.

The technical defect that the valve cover of the self-closing valve in the prior art cannot be matched with a timing mechanism 9 for timing is overcome. The valve cover includes: the cover body 1 is directly matched and connected with the valve body 7; other components may be mounted and the closure 2 and connector 3 co-operating. The lower end of the cover body 1 is buckled with the valve body 7, the overall structure of the cover body 1 is of a cylindrical structure, and other components are arranged in the cover body 1. The upper end of the cover body 1 is connected with the sealing cover 2 in an integrated sealing way, and the upper side of the middle part of the sealing cover 2 is connected with the connecting cylinder 3.

In order to ensure that the connecting cylinder 3 and the timing mechanism 9 can work in a matching way, the timing function of the gas self-closing valve is realized. A limiting opening 34 is formed in the connecting cylinder 3 near the upper surface of the sealing cover 2, so that the sleeve part 6 extends out of the connecting cylinder 3 along the connecting cylinder 3. The positioning clamping piece 4 extends into the limiting opening 34 to be matched with the sleeve part 6 for limiting, so that the timing mechanism 9 is connected with the valve cover.

In order to ensure that the connecting cylinder 3 and the timing mechanism 9 can work in a matching way, the timing function of the gas self-closing valve is realized. A guide seat 33 is arranged between the connecting cylinder 3 and the sealing cover 2, and the limiting opening 34 is formed in the middle of the guide seat 33; the guide seat 33 is a circular boss convexly arranged on the outer wall of the lower end of the connecting cylinder 3, and the limiting opening 34 is formed in the middle of the circular boss; an installation cavity 21 is formed below the circular boss, and the inside of the installation cavity 21 is communicated with the inner cavity of the cover body 1.

When the sleeve member 6 extends out of the connecting cylinder 3, the self-closing valve is not controlled by the timing mechanism 9 and is opened or closed in a normal use state of the self-closing valve. The self-closing valve closes when the sleeve member 6 moves downwardly back into the connector barrel 3. One end of the positioning clamping piece 4 is connected with the self-closing valve timing mechanism 9, and the other end of the positioning clamping piece extends into the limiting opening 34 and is connected with the sleeve part 6 in a limiting matching mode, so that the function of limiting the position of the sleeve part 6 is achieved. Namely: when the positioning clamping piece 4 extends, the self-closing valve timing mechanism 9 works, and the self-closing valve is opened or closed in a conventional use state; when the positioning clamp piece 4 is separated, the self-closing valve is closed under the pushing of the sleeve piece 6. The timing mechanism 9 further has a timing effect on the closing of the self-closing valve by timing the separation of the positioning piece. The valve cover of the self-closing valve can be matched with the self-closing valve component to achieve the effect of timing closing of the self-closing valve.

In order to facilitate the work of the timing knob 5 of the self-closing valve, the stable work of the positioning clamping piece 4 is ensured. A guide seat 33 is provided between the connecting cylinder 3 and the cover 2, and a stopper opening 34 is provided in the middle of the guide seat 33. The positioning clamping piece 4 is arranged through the guide seat 33, so that the stroke of the limiting opening 34 is prolonged, and the stable movement track of the positioning clamping piece 4 along the limiting opening 34 is ensured.

To facilitate ease of machining and positioning of the guide 33. The guide seat 33 is a circular boss convexly arranged on the outer wall of the lower end of the connecting cylinder 3, and the limiting port 34 is arranged in the middle of the circular boss. The round boss is convenient for ensuring the arrangement space of the limit port 34.

To ensure that the other parts of the sleeve element 6, in particular the supporting spring, are mounted, a mounting space is left. The mounting cavity 21 is formed below the circular boss, and the inside of the mounting cavity 21 is communicated with the inner cavity of the cover body 1, so that the lower end part of the sleeve part 6 is matched with the inside of the self-closing valve.

In order to facilitate processing and manufacturing, the service life of the valve cover is prolonged, and the working strength of the valve cover is improved. In this embodiment, the cap body 1, the cap 2, the connecting cylinder 3 and the circular boss are integrally formed.

The hinged rotation of the positioning clamp piece 4 and the installation and fixation of other self-closing valve components, in particular the installation of the timing mechanism 9 are facilitated, and the timing function of the self-closing valve is realized. The upper surface of the cover 2 is planar.

To facilitate the mounting and fixing of the timing mechanism 9 of the self-closing valve. The upper surface of the sealing cover 2 is provided with a crescent groove structure 23, so that a timing gear set 93 of the timing mechanism 9 is connected inside the groove structure 23.

The upper surface of the sealing cover 2 is provided with a crescent groove structure 23, so that the self-closing valve component is connected inside the groove structure 23. The groove structure 23 can also play a role in limiting and fixing the installation of the self-closing valve component, thereby being convenient for manual installation, saving the assembly time and improving the installation precision.

To facilitate the mounting and fixing of the timing mechanism 9. The bottom of the groove structure 23 is provided with at least one positioning hole 231 and at least one connecting hole 232, and the positioning element and the fixing element pass through the positioning hole 231 and the connecting hole 232 to be positioned and connected with the timing gear set 93; the positioning member positions the self-closing valve member and the connecting hole 232 makes the self-closing valve member firmly connected with the groove structure 23.

In order to ensure the control function of the timing gear structure on the positioning clamping piece 4, the matching working effect is ensured. One end of the upper surface of the sealing cover 2, which is close to the timing gear set 93, is provided with a positioning clamping piece hinging shaft 22, so that the positioning clamping piece 4 is hinged on the positioning clamping piece hinging shaft 22 and extends into the limiting opening 34 or is separated from the limiting opening 34 in a rotating way. The articulated shaft 22 of the positioning clamping piece is connected with the positioning clamping piece 4 and the timing mechanism 9, so that the timing clamping piece is controlled by the timing mechanism 9.

In order to facilitate the fixed mounting of the clockwork spring, the stable work of the clockwork spring is ensured, and the stable work effect of the product is improved. The outer wall of the upper end of the connecting cylinder 3 is provided with a spring connecting and fixing notch 31, the cross section of the spring connecting and fixing notch 31 is of a trapezoidal structure, and the opening size of the spring connecting and fixing notch 31 is smaller than the size of the bottom of the spring connecting and fixing notch 31. The spring generates power to provide power for the timing gear structure when the spring is gradually loosened. One end of the clockwork spring is fixed on the connecting cylinder 3, and the other end is fixed on the timing gear structure. The timing gear is fixed on a timing knob 5 of the self-closing valve. When the user needs to time, the user rotates the self-closing valve timing knob 5 to the timing time. The timing gear drives the spring plate to be tight, and the energy is increased. A series of gear changes of the timing gear increases the number of revolutions when the spring is relaxed, and the speed at which the gear train rotates by the drive of the spring is constant. The screwed clockwork spring cannot be loosened at one stroke, and the change of the rotating speed caused by the influence of the tightness of the clockwork spring is avoided. And when the spring increases the energy release completely, timing. Then the timing clamping piece is driven by the timing gear to be separated from the limiting opening 34. The sleeve member 6 falls and the self-closing valve closes.

To fix the relative position of the self-closing valve timing knob 5 with respect to the connector barrel 3. The spring is connected with the lower part of the fixed notch 31, and the outer wall of the connecting cylinder 3 is provided with a clamp groove 32, so that the connecting cylinder 3 is in limit connection with the timing knob 5.

The clip groove 32 is formed along one turn of the connector barrel 3 and has a ring groove structure. The clip groove 32 is exposed above the self-closing valve timing knob 5 after the connector barrel 3 is passed through the central opening of the self-closing valve timing knob 5. Then the clamp is fixed in the clamp groove 32, because the outer diameter of the clamp is larger than the depth of the clamp groove 32; and the outer diameter of the clamp is larger than the diameter of the middle opening of the self-closing valve timing knob 5. After the clamp is arranged in the clamp groove 32, a part of the clamp is exposed outside to limit the self-closing valve timing knob 5, and the self-closing valve timing knob 5 is limited and fixed. The self-closing valve aims to solve the technical defect that the automatic closing function can be realized by driving the valve rod 04 of the self-closing valve on the premise that the overpressure and underpressure functions of the self-closing valve cannot be reserved in the conventional self-closing valve. The valve stem assembly includes: the self-closing valve comprises a valve rod 04, a lower pressure plate 64 and a sleeve part 6, wherein the sleeve part 6 is connected to the upper side of the lower pressure plate 64, a pushing part 63 is sleeved on the outer wall of the sleeve part 6, the pushing part 63 is arranged in the installation cavity 21, so that the pushing part 63 pushes the lower pressure plate 64, and the lower pressure plate 64 pushes the self-closing valve to use the valve rod 04. When the time set by the user through the timing mechanism 9 is up, the timing mechanism 9 drives the positioning clamping piece 4 to rotate, and the positioning clamping piece 4 is separated from the limiting function between the positioning clamping piece and the sleeve part 6. The pushing piece 63 pushes the lower pressure plate 64 to push the valve rod 04 to move downwards, the self-closing valve is closed, and gas circulation of the gas pipeline is blocked.

When the user needs to open the self-closing valve again, the positioning clamping piece 4 is driven to extend into the limiting groove 61 by rotating the timing mechanism 9; the user drives sleeve part 6 through carrying and drawing to carry button 01 and moves up, drives down pressure disk 64 upwards, and location fastener 4 stretches into spacing groove 61 and is spacing to sleeve part 6, and valve rod 04 shifts up, and the self-closing valve is opened. The self-closing valve is driven by the timing device to position the clamping piece 4, so that the self-closing valve can be automatically closed when the self-closing valve is not used and the set time is reached.

Specifically, when the user need use the gas, through carrying the button 01 that carries that 6 upper ends of sleeve parts are connected, carry button 01 and drive sleeve parts 6 and holding down disk 64 rebound, sleeve parts 6 drive valve rod 04 and shift up to reach the effect that the valve was opened. In order to solve the limit connection between the timing mechanism 9 and the sleeve part 6 and ensure that the sleeve part 6 is in a limit fixed state and does not drive the valve rod 04 to move downwards when the timing mechanism 9 acts. A limiting groove 61 is formed in one end, close to the lower pressing plate 64, of the sleeve part 6, a positioning clamping piece 4 is arranged through the sealing cover 2 penetrating through the self-closing valve, and the positioning clamping piece 4 extends into the limiting groove 61 to limit the position of the sleeve part 6. The positioning clamp 4 passes through the connecting cylinder 3 of the self-closing valve and enters the limiting groove 61 on the sleeve part 6, and the sleeve part 6 is fixedly connected with the connecting cylinder 3 of the self-closing valve. Therefore, when the timing mechanism 9 works, the positioning clamping piece 4 extends into the limiting groove 61 to limit the sleeve piece 6, the self-closing valve is not driven by the pushing piece 63, and the self-closing valve can be normally used. When the time of the timing mechanism 9 reaches, the timing mechanism 9 moves the positioning clamping piece 4 to be separated, the pushing piece 63 pushes the sleeve piece 6 to move downwards, and the self-closing valve is closed, so that the timing effect is realized.

In order to ensure that the timing mechanism 9 is separated from the positioning clamping piece 4, the positioning clamping piece 4 and the sleeve piece 6 work in a limiting mode. The overpressure function of the self-closing valve is realized, and particularly, the self-closing valve can be pushed by overpressure gas to automatically close under the overpressure condition. The width of the limiting groove 61 is larger than the thickness of the positioning clamping piece 4, the required separation distance between the armature 02 at the end part of the valve rod 04 and the permanent magnet 03 is smaller than or equal to the width of the limiting groove 61, and the sleeve piece 6 can move upwards when the positioning clamping piece 4 limits the limiting groove 61. Specifically, when overpressure gas flows through the gas pipeline, the pressure of the gas is high, and the membrane is pushed. A force of the armature 02 and the permanent magnet 03 at the end of the valve rod 04 acting in a direction away from each other is generated, so that the armature 02 and the permanent magnet 03 are disengaged from each other. In the separation process, the valve rod 04 and the armature 02 slide upwards, and the maximum distance of the sliding distance is the width of the limiting groove 61, so that the width of the limiting groove 61 is ensured to be larger than the separation distance between the armature 02 and the permanent magnet 03.

In order to ensure that the user pulls the lifting knob 01, and thus the sleeve member 6, and can drive the valve rod 04 to move upwards, thereby opening the self-closing valve. The inner wall of the upper end of the sleeve 6 is provided with a pushing step 62, and the pushing step 62 is matched with the pushing connecting valve rod 04 to push the pushing step 62 to push the valve rod 04 to move upwards.

To ensure that the push step 62 has a point of force to drive the valve stem 04 upwards, it is ensured that the valve stem 04 moves upwards to open the self-closing valve. The upper end of the valve rod 04 is provided with a key groove 041, the inside of the key groove 041 is fixedly connected with a key 11, the outer diameter of the key 11 is the same as the inner diameter of the pushing step 62, and the pushing step 62 supports the key 11 to move the valve rod 04 upwards. The catch 11 is preferably arranged by matching the snap spring 8 with the pushing step 62, and the pushing step 62 moves the catch 11 to push the valve rod 04 to move upwards. Due to the mounting between the valve stem 04 and the sleeve member 6: the valve rod 04 extends into the lower end of the sleeve member 6, and in order to ensure the extension, the outer diameter of the valve rod 04 needs to be smaller than the inner diameter of the sleeve member 6; however, the pushing step 62 is needed to push the valve rod 04, so the action between the pushing step 62 and the valve rod 04 is realized by the interaction of the fixed connection clamping key 11 at the end part of the valve rod 04 and the clamping key 11.

In order to realize the under-pressure state of the self-closing valve, the self-closing valve is automatically closed. Namely: the timing mechanism 9 is ensured to have short set time, and the gas pipeline under-pressure can successfully trigger the self-closing valve to automatically close. The distance of the push step 62 from the upper end of the sleeve member 6 is greater than the distance that the valve stem 04 moves downwards when the self-closing valve is closed.

Specifically, the timer mechanism 9 is set to a time short, and when the user opens the self-closing valve, the pushing step 62 on the sleeve member 6 moves the valve rod 04 upward through the catch key 11. When a user loosens the sleeve part 6, due to the fact that a certain distance exists between the positioning clamping piece 4 and the limiting groove 61 (the positioning clamping piece 4 is arranged in the middle of the limiting groove 61 and does not support the limiting groove 61), after the sleeve part 6 falls for a certain distance, the positioning clamping piece 4 is limited and fixed through the limiting groove 61; the valve rod 04 pushed to a certain height by the sleeve 6 is in a force balance state (the supporting force provided by the membrane through the pressure of the gas and the acting force received by the permanent magnet 03), and the valve rod 04 does not fall along with the falling of the sleeve 6. At this time, the latch 11 is on the upper side of the push step 62.

In order to facilitate the pushing action on the positioning clamping piece 4, the limiting movement track of the positioning clamping piece 4 is ensured, and the situation that the positioning clamping piece 4 does not work in place is avoided. The positioning catch 4 is preferably of paddle construction. One side of the positioning clamping piece 4 is provided with a hinge hole 41, so that the positioning clamping piece 4 is hinged on the upper side of the sealing cover 2. One end of the positioning clamping piece 4 is hinged, and the other end of the positioning clamping piece rotates around the center of the hinged end and enters the limiting groove 61 to realize limiting.

In order to achieve the function between the positioning catch 4 and the timing mechanism 9. A toggle protrusion 42 is arranged on the upper side of one end of the positioning clamping piece 4 far away from the hinge hole 41, so that the toggle protrusion 42 is matched and connected with the timing mechanism 9 of the timing self-closing valve, and the toggle protrusion 42 is pushed to extend out of the limiting groove 61. The toggle protrusion 42 interacts with the timing mechanism 9, ensuring that the positioning catch 4 (i.e. the toggle protrusion 42) can be pushed by the timing mechanism 9. The self-closing valve realizes the timing function under the condition of not influencing the function of the existing self-closing valve.

In order to ensure that the positioning clamping piece 4 can complete the rotation movement required by timing in a narrow space; and can also extend into the limiting groove 61 in the movement process to limit the sleeve part 6. The positioning clamping piece 4 is preferably of a triangular structure, the hinge hole 41 is arranged at one corner of the triangle, the poking protrusion 42 is integrally connected to the other corner, and the third corner of the positioning clamping piece 4 extends into the limiting groove 61 to realize limiting effect. Because the space of the upper side of the sealing cover 2 is limited, the triangular structure can occupy the minimum space on the premise of meeting the hinging, pushing and limiting functions.

In order to ensure that the positioning clamping piece 4 has enough supporting force in the rotating process, the stable rotation is realized. The positioning clip 4 is integrally connected with a supporting projection 43 at the lower side of the toggle projection 42. The supporting protrusion 43 contacts and supports the cover 2 to provide supporting force for the positioning fastener 4, thereby ensuring the stable rotation of the positioning fastener 4.

In order to realize that the timing mechanism 9 is in a timing state, the timing mechanism 9 is separated from the positioning clamping piece 4, and at the moment, the positioning clamping piece 4 needs to enter the limiting groove 61 for limiting. In order to provide a force for the positioning catch 4 to enter the limiting groove 61, the elastic member 44 is connected to the toggle projection 42 or the support projection 43, and the elastic member 44 drives the positioning catch 4 to extend into the limiting groove 61. The resilient member 44 may be connected at one end to a member of the timing mechanism 9 fixed to the cover 2 (e.g., a timing gear set 93) and at the other end to the positioning catch 4 via the toggle protrusion 42 or the support protrusion 43. The elastic piece 44 drives the positioning clamping piece 4 to enter the limiting groove 61 to provide continuous acting force, and as long as the acting force between the timing mechanism 9 and the positioning clamping piece 4 is separated, the elastic piece 44 pulls the positioning clamping piece 4 to enter the limiting groove 61.

In order to facilitate the installation of the elastic member 44 and to ensure the service life of the elastic member 44, the elastic member 44 is preferably a tension spring.

In order to ensure that the self-closing valve can be automatically closed under the action of the driving device after the preset time of a user is up, and the service life and the supporting force are ensured. The pusher 63 is preferably a supporting spring. Of course, in order to ensure the action of the support spring on the lower platen 64, the outer diameter of the support spring is smaller than the diameter of the lower platen 64. When a user pulls the sleeve part 6 to open the valve, the pushing part 63 is compressed, and the positioning clamping part 4 extends into the limiting groove 61; the user loosens the sleeve member 6, the sleeve member 6 is limited by the positioning clamping piece 4, the action of opening the valve is finished, and the self-closing valve is opened. The supporting spring is in a compressed state, when the preset time is up, the positioning clamping piece 4 is pushed out of the limiting groove 61 by the timing mechanism 9, the supporting spring elastically stretches, the elastic force of the supporting spring pushes the sleeve piece 6 and drives the valve rod 04 to move downwards, and the self-closing valve is closed.

The timing device aims to solve the defects that the existing timing device is difficult to be matched and installed with a self-closing valve, and the self-closing valve is difficult to realize the timing function. The timing mechanism 9 includes: the method comprises the following steps: a timing gear set 93 (same as the meshing principle of the prior art), an energy storage part 111, a timing knob 5, an upper fixing plate 91 and a lower fixing plate 92. Fixedly connecting the upper fixing plate 91 with the lower fixing plate 92, and hinging a rotating shaft 931 of the timing gear set 93 between the upper fixing plate 91 and the lower fixing plate 92; the center of the timing knob 5 is driven by meshing with the timing gear set 93; an energy storage part 111 is connected between the timing knob 5 and the valve cover of the timing self-closing valve, so that the energy storage part 111 drives the timing knob 5 to rotate.

In order to facilitate the installation of the timing gear set 93, particularly the installation in a narrow space of the self-closing valve, the timing gear set is matched with the self-closing valve structure, and the tightness of the structure is guaranteed. The upper fixing plate 91 and the lower fixing plate 92 are of crescent structures, and the outer diameter of the crescent structures is smaller than or equal to the outer diameter of the cover body 1 of the timing self-closing valve. The upper and lower fixed plates 91 and 92 cooperate to fix the timing gear set 93. The inner arc of the crescent structure is matched with the outer circle of the connecting cylinder 3, and the outer arc of the crescent structure is matched with the outer circle of the cover body 1 of the timing self-closing valve. It is ensured that the timing gear set 93 is installed in the only region between the outer wall of the valve cover and the outer wall of the connecting cylinder 3.

In order to facilitate the user to rotate the timing knob 5 for timing, the timing knob 5 is a cover structure, and the timing gear set 93 is disposed inside the cover structure. When the timing knob 5 with the cover body structure is rotated, the area which can be contacted with the knob is large, so that the knob is convenient to rotate and control. Meanwhile, the cover body structure can also protect the timing gear set 93, isolate dust, prolong the service life of the timing gear set 93 and ensure the stable work of the timing device.

In order to enable the energy storage part 111 to have an independent space, the energy storage part 111 is protected, particularly the energy storage part 111 is prevented from being ejected, and the stable operation of the energy storage part 111 is ensured. A through hole 51 is formed in the middle of the timing knob 5, the connecting cylinder 3 of the valve cover extends out of the through hole 51, and the energy storage part 111 is connected to the upper surfaces of the connecting cylinder 3 and the timing knob 5. The energy storage part 111 is positioned on the upper surface of the timing knob 5, and drives the timing knob 5 to rotate through the connection with the connecting cylinder 3, so that the timing driving work is realized.

In order to ensure the connection between the timing knob 5 and the valve cover, the stable working state of the timing knob 5 is ensured. Fixed slot 52 has been seted up at timing knob 5 upper surface middle part, and 3 outer walls of connecting cylinder pass through jump ring 8 fixed connection timing knob 5, and jump ring 8 is established inside fixed slot 52. The timing knob 5 and the connecting cylinder 3 are fixed through the clamp spring 8. Through the structure that sets up fixed slot 52, guarantee to be the level and smooth state at timing knob 5 upper surface, further compile and take place to interfere between the energy storage piece 111, guarantee the steady release energy storage of energy storage piece 111.

In order to facilitate the installation and fixation of the energy storage part 111, the installation position of the energy storage part 111 can be set, and the setting of the initial position of the timing knob 5 is realized. The upper surface of the timing knob 5 is fixedly connected with an energy storage part connecting wall 53, the energy storage part connecting wall 53 is provided with a plurality of energy storage part connecting walls 53, and a circular cavity structure is formed by the plurality of energy storage part connecting walls 53 in a surrounding mode. The energy storage member 111 has one end connected to the energy storage member connecting wall 53 and the other end connected to the timing gear set 93. When the energy accumulating member connecting wall 53 is provided in plural, it is not necessary to attach one end of the energy accumulating member 111 to the energy accumulating member connecting wall 53 in consideration of the fact that the timing knob 5 must be rotated to a certain position when the energy accumulating member 111 is assembled. As the accumulator connecting wall 53 increases, the connectable positions of the accumulator 111 increase. When people assembled, the probability of one-time assembly molding is higher, and the assembly time is reduced accordingly.

The energy storage member 111 can also be connected to the energy storage member connecting wall 53 by adjusting the initial position of the timing knob 5, which is the energy storage connecting wall the end of the energy storage member is located on.

Certainly, the energy storage part 111 is convenient to connect and fasten, and especially the energy storage part 111 is convenient to hang and connect, so that the connection and the control are convenient. One end of the energy accumulating member 111 is connected between the two energy accumulating member connecting walls 53, and the other end is connected to the outer wall of the connecting cylinder 3.

The timing device is easy to install by an installer and has low difficulty and accurate installation position. The lower fixing plate 92 is fixedly connected inside the groove structure 23 in a limiting manner. The installation position of the timing device is further limited by limiting the installation position of the lower fixing plate 92 at the bottom of the timing device. The difficulty of assembling of installation personnel is reduced, and meanwhile, the stability of the timing self-closing valve component is improved.

In order to make the protective cover 10 firmly connected, the energy storage part 111 is covered, and the compactness of the whole timing device structure is ensured. The energy storage piece of timing knob 5 is connected the wall 53 outside area and has been seted up protective cover and has been connected notch 54, and bottom surface fixedly connected with connector link 101 under protective cover 10, connector link 101 and protective cover are connected notch 54 and are cooperated the joint. The shield cover attachment notch 54 provides a guide for the assembly of the shield cover 10 and provides a tighter internal space. The protective cover 10 isolates the energy storage piece 111 between the protective cover 10 and the timing knob 5, and the energy storage piece 111 is protected.

In order to make the space formed by the protective cover 10 and the timing knob 5 more airtight, the influence of the external environment on the energy accumulating member 111 is reduced. An outer region of the barrier cover coupling notch 54 of the timing knob 5 is provided with a ring-shaped sealing protrusion 541, and the diameter of the ring-shaped sealing protrusion 541 is smaller than the outer diameter of the barrier cover 10. When the protecting cover 10 is snapped on the protecting cover connecting notch 54, the annular sealing protrusion is simultaneously snapped on the inner circle of the protecting cover 10. The sealing function of the inner space is achieved, and the influence of other substances such as external dust on the energy storage part 111 is prevented.

In order to achieve the meshing drive between the timing gear set 93 and the timing knob 5, the timing function and the smooth release of energy from the energy accumulating member 111 are ensured. The lower surface of the timing knob 5 is provided with a plurality of supporting columns 55 around the through hole 51, a connecting column 56 is convexly arranged at the end part of each supporting column 55, and one gear of the timing gear set 93 is clamped with the connecting column 56. The supporting column 55 is used for supporting and fixing the first gear, and the connecting column 56 is used for connecting and fixing the first gear. The first gear is matched and connected with the timing gear set 93 at a set position, and the meshing driving timing knob 5 and the timing function are met.

In order to improve the fixing strength of the first gear of the timing gear set 93, the meshing driving of the first gear is ensured to be stable. Support post connection walls 57 are provided between the support posts 55, the support post connection walls 57 being provided around the through-holes 51. The support post connecting wall 57 is arranged in a circular ring shape, and the center hole of the first gear is exactly aligned with the support post connecting wall 57.

In order to facilitate accurate timing by the user, the outer wall of the timing knob 5 is provided with a rotation timing mark 59. And (3) the user refers to the mark and rotates the timing knob 5 to the position with the required timing time to finish the accurate timing of the self-closing valve.

The working process or working principle of the self-closing valve connected by the valve cover of the timing self-closing valve is as follows:

the initial state of the self-closing valve is as follows: the poking bulge 42 is limited by a poking limiting sheet 58 connected with the inner wall of the timing knob 5, so that the positioning clamping piece 4 is separated from the limiting opening 34, and the self-closing valve is in a closed state and cannot be opened.

When the user needs to open the self-closing valve:

the method comprises the following steps: the self-closing valve is timed by a timing knob 5. The timing knob 5 is rotated to drive the timing mechanism 9 and the clockwork spring is pulled for timing, the poking protrusion 42 loses the limiting support of the limiting poking piece 58 of the timing knob 5, and the positioning clamping piece 4 is rotated to extend into the limiting opening 34 of the sleeve part 6 under the elastic pulling of the elastic piece 44 and further enters the limiting groove 61. The elastic part 44 has a small amount of elastic potential energy (in a small amount of stretching state all the time), which can drive the positioning fastener 4 to rotate into the limiting groove 61.

Step two: and opening the self-closing valve. A user pulls the lifting button 01 to drive the sleeve member 6 to move upwards, the pushing step 62 on the upper side inside the sleeve member 6 pushes the clamping key 11 on the valve rod 04, and the valve rod 04 and a leather membrane on the lower portion of the valve rod 04 are further driven to move upwards; meanwhile, the armature 02 at the lower part of the membrane adsorbs the permanent magnet 03 at the lower part to move upwards together (adsorption contact), and the pushing piece 63 is compressed; at this time, the plug 05 is driven to move, and the self-closing valve is opened.

In the process of synchronization, when the limiting groove 61 on the lower side of the sleeve member 6 moves upwards, the elastic member 44 drives the positioning clamping member 4 to enter the limiting groove 61. After the user loosens the lifting button 01, the sleeve member 6 falls for a certain distance and is limited and fixed by the positioning clamping piece 4 extending into the limiting groove 61; the valve rod 04 pushed to a certain height by the sleeve member 6 is in a force balance state (the supporting force provided by the membrane through the pressure of the fuel gas and the acting force received by the armature 02), the valve rod 04 does not fall along with the falling of the sleeve member 6, and the falling distance between the valve rod 04 and the armature 02 and the permanent magnet 03 is smaller than that of the sleeve member 6. Namely: releasing the knob 01 will not cause the valve core 05 to move and close the self-closing valve.

Step three: and closing the self-closing valve after timing. The timing knob 5 is rotated, the energy storage part 111 stores energy, the energy storage part 111 continuously releases energy under the action of the timing gear set 93, and the preset time is reached after the energy is released. During the release of energy, the timing knob 5 is rotated in the reverse direction (the forward direction is the direction of the rotation timing). When the reverse rotation is finished, the limit shifting piece 58 of the timing knob 5 drives the shifting protrusion 42 of the positioning clamping piece 4 to drive the positioning clamping piece 4 to be separated from the limit groove 61. The compressed pusher 63 drives the valve stem assembly down and the self-closing valve closes.

When the user needs the use, the gas pipeline that appears unusually is under-pressure:

when the preset time is not reached, the gas pipeline has an under-pressure phenomenon. The diaphragm moves in the direction of low pressure, and the pressure of the gas pipe is reduced, so that the supporting pressure for the diaphragm is reduced. The membrane breaks the equilibrium of the valve stem 04, forcing it to move downward. The valve rod 04, the armature 02 and the permanent magnet 03 all move downwards, and the falling valve rod 04 closes the self-closing valve. The self-closing valve can be closed by the underpressure under the condition that the preset time is not reached.

When a user needs to use the gas pipeline, abnormal overpressure of the gas pipeline occurs:

when the preset time is not reached, the overpressure phenomenon occurs in the gas pipeline. The diaphragm moves in the direction of low pressure, and the pressure of the gas pipe increases, so that the supporting pressure on the diaphragm increases, and the diaphragm urges the upper valve stem 04 to move upward. The membrane drives the armature 02 and the valve rod 04 to move upwards. The attraction force between the armature 02 moving upward and the permanent magnet 03 is gradually reduced, and at a certain distance, the permanent magnet 03 is separated from the action force of the armature 02, and the permanent magnet 03 moves downward. The falling permanent magnet 03 causes the self-closing valve to close. It is ensured that overpressure can also cause the self-closing valve to close in the event that a predetermined time is not reached.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (10)

1. A timing self-closing valve for a gas pipeline is characterized by comprising: the valve comprises a valve body (7), a valve core (05), a valve cover and a valve rod assembly; the valve comprises a valve body (7), a valve cover, a valve core (05), a valve rod assembly, a timing mechanism (9), a valve rod assembly and a valve rod assembly, wherein the valve cover is connected to the upper side of the valve body (7), the valve core (05) is arranged between the valve body (7) and the valve cover, the valve rod assembly is in driving connection with the valve core (05), the other end of the valve rod assembly penetrates through and extends out of the valve cover, the upper side of the valve cover is provided with the timing mechanism (9), and the timing mechanism (9) is in limiting connection with the valve rod assembly to enable the timing mechanism (9) to limit the valve rod assembly to extend into the valve core (05).

2. The gas pipeline timing self-closing valve as recited in claim 1, wherein the valve cover comprises: lid body (1), closing cap (2) and connecting cylinder (3), lid body (1) lower extreme is connected with valve body (7) lock, lid body (1) upper end integrated into one piece sealing connection closing cap (2), closing cap (2) middle part is connected with connecting cylinder (3) are close to closing cap (2) upper surface department and have seted up spacing mouth (34), make sleeve part (6) stretch out connecting cylinder (3) along connecting cylinder (3), and location fastener (4) stretch into spacing mouth (34) are spacing with sleeve part (6) cooperation.

3. The gas pipeline timing self-closing valve according to claim 2, characterized in that a guide seat (33) is arranged between the connecting cylinder (3) and the sealing cover (2), and the limiting port (34) is arranged in the middle of the guide seat (33); the guide seat (33) is a circular boss convexly arranged on the outer wall of the lower end of the connecting cylinder (3), and the limiting opening (34) is formed in the middle of the circular boss; an installation cavity (21) is formed below the circular boss, and the inside of the installation cavity (21) is communicated with the inner cavity of the cover body (1);

the cover comprises a cover body (1), a cover (2), a connecting cylinder (3) and a circular boss which are integrally formed.

4. The gas pipeline timing self-closing valve according to claim 3, wherein the upper surface of the sealing cover (2) is planar; a crescent groove structure (23) is formed in the upper surface of the sealing cover (2), so that a timing gear set (93) of the timing mechanism (9) is connected to the inside of the groove structure (23);

the bottom of the groove structure (23) is provided with at least one positioning hole (231) and at least one connecting hole (232), and the positioning piece and the fixing piece penetrate through the positioning hole (231) and the connecting hole (232) to be positioned and connected with the timing gear set;

and one end of the upper surface of the sealing cover (2) close to the timing gear set is provided with a positioning clamping piece hinged shaft (22), so that the positioning clamping piece (4) is hinged to the positioning clamping piece hinged shaft (22) and rotationally extends into the limiting opening (34) or is separated from the limiting opening (34).

5. The gas pipeline timing self-closing valve according to claim 3, characterized in that a clockwork spring connecting and fixing notch (31) is formed in the outer wall of the upper end of the connecting cylinder (3), the cross section of the clockwork spring connecting and fixing notch (31) is of a trapezoidal structure, and the opening size of the clockwork spring connecting and fixing notch (31) is smaller than the size of the bottom of the clockwork spring connecting and fixing notch (31);

the clockwork spring is connected to the lower portion of the fixed notch (31), and a clamp groove (32) is formed in the outer wall of the connecting cylinder (3), so that the connecting cylinder (3) is in limit connection with the timing knob (5).

6. A gas pipeline timed self-closing valve as claimed in claim 3, wherein said valve stem assembly comprises: the self-closing valve comprises a valve rod (04), a lower pressing plate (64) and a sleeve piece (6), wherein the upper side of the lower pressing plate (64) is connected with the sleeve piece (6), a pushing piece (63) is sleeved on the outer wall of the sleeve piece (6), the pushing piece (63) is arranged in the installation cavity (21), and the pushing piece (63) pushes the lower pressing plate (64), and the lower pressing plate (64) pushes the self-closing valve to use the valve rod (04).

7. The timing self-closing valve for the gas pipeline is characterized in that one end, close to a lower pressure plate (64), of a sleeve part (6) is provided with a limiting groove (61), a positioning clamp (4) is arranged through a connecting cylinder (3), and the positioning clamp (4) extends into the limiting groove (61) to limit the sleeve part (6);

the width of the limiting groove (61) is larger than the thickness of the positioning clamping piece (4), the required separation distance between the armature (02) at the end part of the valve rod (04) and the permanent magnet (03) is smaller than or equal to the width of the limiting groove (61), so that the sleeve piece (6) can move upwards when the positioning clamping piece (4) limits the limiting groove (61);

a pushing step (62) is formed in the inner wall of the upper end of the sleeve part (6), and the pushing step (62) is matched with the valve rod (04) in a pushing connection mode, so that the valve rod (04) is pushed to move upwards by the pushing step (62);

a clamping key groove (041) is formed in the upper end of the valve rod (04), a clamping key (11) is fixedly connected to the clamping key groove (041), the outer diameter of the clamping key (11) is the same as the inner diameter of the pushing step (62), and the pushing step (62) supports the clamping key (11) to push the valve rod (04) to move upwards;

the distance between the pushing step (62) and the upper end of the sleeve piece (6) is larger than the distance that the valve rod (04) moves downwards when the self-closing valve is closed.

8. The gas pipeline timing self-closing valve according to claim 7, characterized in that the positioning clamping piece (4) is of a shifting piece structure, one side of the positioning clamping piece (4) is provided with a hinge hole (41), so that the positioning clamping piece (4) is hinged on the upper side of the sealing cover (2) of the self-closing valve;

a toggle bulge (42) is arranged on the upper side of one end, far away from the hinge hole (41), of the positioning clamping piece (4), so that the toggle bulge (42) is matched and connected with a timing mechanism (9) of the timing self-closing valve, and the toggle bulge (42) is pushed to extend out of the limiting groove (61);

the positioning clamping piece (4) is of a triangular structure, the hinge hole (41) is formed in one corner, the poking bulge (42) is integrally connected to the other corner, and the third corner of the positioning clamping piece (4) extends into the limiting groove (61);

the positioning clamping piece (4) is connected with the lower side surface of the poking bulge (42) and is integrally connected with a supporting bulge (43);

the toggle bulge (42) or the support bulge (43) is connected with an elastic piece (44), and the elastic piece (44) drives the positioning clamping piece (4) to extend into the limiting groove (61);

the elastic piece (44) is a tension spring;

the pushing piece (63) is a supporting spring, and the outer diameter of the supporting spring is smaller than the diameter of the lower pressing plate (64).

9. Gas pipe timing self-closing valve according to claim 4, characterized in that said timing mechanism (9) comprises: the method comprises the following steps: the timing gear set (93), the energy storage part (111), the timing knob (5), the upper fixing plate (91) and the lower fixing plate (92);

the upper fixing plate (91) is fixedly connected with the lower fixing plate (92), and a rotating shaft (931) of the timing gear set (93) is hinged between the upper fixing plate (91) and the lower fixing plate (92);

the center of the timing knob (5) is driven by meshing with the timing gear set (93);

the timing knob (5) and the valve cover of the timing self-closing valve are connected with the energy storage part (111), so that the energy storage part (111) drives the timing knob (5) to rotate.

10. The timing self-closing valve for the gas pipeline is characterized in that the upper fixing plate (91) and the lower fixing plate (92) are crescent structures, and the outer diameter of the crescent structures is smaller than or equal to the outer diameter of a cover body (1) of the timing self-closing valve;

the lower fixing plate (92) is fixedly connected inside the groove structure (23) in a limiting manner;

the timing knob (5) is of a cover body structure, and the timing gear set (93) is arranged inside the cover body structure;

a through hole (51) is formed in the middle of the timing knob (5), the connecting cylinder (3) of the valve cover extends out of the through hole (51), and the energy storage part (111) is connected to the upper surfaces of the connecting cylinder (3) and the timing knob (5);

a fixing groove (52) is formed in the middle of the upper surface of the timing knob (5), the outer wall of the connecting cylinder (3) is fixedly connected with the timing knob (5) through a clamp spring (8), and the clamp spring (8) is arranged inside the fixing groove (52);

the upper surface of the timing knob (5) is fixedly connected with a plurality of energy storage part connecting walls (53), and the energy storage part connecting walls (53) surround to form a circular cavity structure;

one end of the energy storage part (111) is connected between the two energy storage part connecting walls (53);

a protective cover connecting notch (54) is formed in the outer area of the energy storage part connecting wall (53) of the timing knob (5), a connecting buckle (101) is fixedly connected to the lower bottom surface of the protective cover (10), and the connecting buckle (101) is matched and clamped with the protective cover connecting notch (54);

the outer area of the protective cover connecting notch (54) of the timing knob (5) is provided with a ring-shaped sealing bulge (541), and the diameter of the ring-shaped sealing bulge (541) is smaller than the outer diameter of the protective cover (10);

a supporting column (55) is arranged on the lower surface of the timing knob (5) around the through hole (51), a connecting column (56) is convexly arranged at the end part of the supporting column (55), and a first gear of the timing gear set (93) is clamped with the connecting column (56);

supporting column connecting walls (57) are arranged between the supporting columns (55), and the supporting column connecting walls (57) are arranged around the through hole (51);

the outer wall of the timing knob (5) is provided with a rotary timing mark (59).

Images