A multifunctional gas self-closing ball valve

Abstract

The embodiment of the present invention discloses a multifunctional gas self-closing ball valve, characterized in that it also includes: a reset mechanism, which is arranged above the valve body, the reset mechanism is provided with a valve stem and a rotary switch, one end of the valve stem is connected to the rotary switch, and is used to connect the gas channel by controlling the rotary switch; a lock card is provided inside the rotary switch; a ball valve mechanism, the ball valve mechanism is provided with a valve ball, the valve ball is provided with an air inlet end and an air outlet end, the air inlet end is connected to the air inlet pipe, and the air outlet end is connected to the air outlet pipe; a self-closing component is provided inside the valve ball, and the self-closing component includes: an adjusting part, one end of the adjusting part is connected to the air inlet end; a valve, the valve is close to the air outlet end; a pushing part, the pushing part is connected to the adjusting part, and the valve is connected to the pushing part; at the same time, the present invention has the characteristic of high safety.

Description

Technical Field

[0001] The embodiment of the present invention relates to the technical field of pipeline gas protection devices, and specifically to a multifunctional gas self-closing ball valve. Background Art

[0002] Gas is a general term for gaseous fuels such as natural gas, liquefied petroleum gas, artificial gas, and biomass gas. It can burn and release heat and is widely used in heating for daily life, factory heating, chemical production, and pharmaceutical production. With the development of society, gas heating furnaces, gas-filled furnaces, gas water heaters, gas stoves and other products have entered thousands of households. Therefore, gas has become a necessity in people's lives and is increasingly valued by people.

[0003] In order to use gas safely, the gas self-closing valve is installed on the pipeline of the low-pressure gas system. When the pipeline gas supply pressure is under-pressure or over-pressure, it can automatically close without electricity or other external power and must be opened manually. However, in daily life and industrial production, once the interface hose of the gas pipeline falls off, or the hose is burned by fire and causes a large amount of gas leakage, it is impossible to accurately and automatically cut off the gas source, which often causes safety accidents and brings great harm to users. In addition, in daily family life, if children accidentally open the gas valve due to improper parental supervision, it will also bring unnecessary dangers to users. Summary of the invention

[0004] To this end, an embodiment of the present invention provides a multifunctional gas self-closing ball valve to solve the problem of poor safety in the prior art due to inaccurate gas source cutting off and failure to prevent children from turning the rotary switch.

[0005] In order to achieve the above purpose, the embodiment of the present invention provides the following technical solutions:

[0006] According to a first aspect of an embodiment of the present invention, there is provided a multifunctional gas self-closing ball valve, comprising a valve body, wherein the valve body comprises an air inlet pipe and an air outlet pipe, wherein the air inlet pipe is connected to the air outlet pipe to form a gas channel; and further comprising:

[0007] A reset mechanism, the reset mechanism is arranged above the valve body, the reset mechanism is provided with a valve stem and a rotary switch, one end of the valve stem is connected to the rotary switch, and is used to connect the gas channel by controlling the rotary switch; a lock card is provided inside the rotary switch;

[0008] A ball valve mechanism, wherein the ball valve mechanism is provided with a valve ball, wherein the valve ball is provided with an air inlet end and an air outlet end, wherein the air inlet end is connected to the air inlet pipe, and the air outlet end is connected to the air outlet pipe; a self-closing component is provided inside the valve ball, and the self-closing component comprises:

[0009] A regulating part, one end of which is connected to the gas inlet end and is used to regulate the flow rate and pressure of the gas;

[0010] A valve, the valve being close to the air outlet;

[0011] A pushing part, the pushing part is connected to the regulating part, and the valve is connected to the pushing part; the pushing part is used to control the on-off of the gas channel according to the state of the gas pressure and flow at the gas inlet end and the gas outlet end.

[0012] Furthermore, the regulating part includes a bracket, the bracket is configured as a hollow structure, the hollow structure is provided with an inlet and an outlet, the inlet is communicated with the air inlet end, and the outlet is communicated with the air outlet end.

[0013] Furthermore, a locking spring is provided at the bottom of the bracket, and the locking spring is used to fix the position of the bracket.

[0014] Further, the diameter of the inlet is greater than the diameter of the outlet.

[0015] Furthermore, the pushing part comprises:

[0016] A slide bar, the slide bar is coaxially embedded with the bracket;

[0017] A first spring, wherein the first spring is sleeved on the outside of the slide bar, one end of the first spring is connected to the bracket, and the other end of the first spring is connected to the slide bar.

[0018] Furthermore, the rotary switch comprises a rotary switch housing, a limit card is provided inside the rotary switch housing, and the limit card cooperates with the lock card.

[0019] Furthermore, a second spring is provided inside the rotary switch housing, one end of the second spring is connected to the bottom of the rotary switch housing, and the other end of the second spring is connected to the limit card, and the second spring is used to provide an upward pushing force for the lock card.

[0020] Furthermore, a limiting groove is provided inside the rotary switch, and the limiting groove is engaged with the lock card.

[0021] The embodiments of the present invention have the following advantages:

[0022] 1. An embodiment of the present invention provides a multifunctional gas self-closing ball valve, which is provided with a self-closing component. When the gas pressure or flow at the air inlet end and the air outlet end is unbalanced, the first spring of the pushing part cannot push the sliding rod open. When the first spring is compressed, it pushes the valve to instantly close the air outlet end, thereby realizing automatic and precise gas closing without human intervention, thereby ensuring the safety of users' lives and property.

[0023] 2. An embodiment of the present invention provides a multifunctional gas self-closing ball valve, which is provided with a child lock card. Regardless of whether the gas channel is in a connected state or a disconnected state, the child lock card cooperates with the limit groove to prevent children from turning the rotary switch.

[0024] 3. An embodiment of the present invention provides a multifunctional gas self-closing ball valve, which is provided with a reset mechanism. When resetting, the gas channel is closed by pressing down and turning the rotary switch, and the gas channel is opened by pressing down and turning the rotary switch again. After the gas channel is closed, the gas channel will not be automatically connected. It is necessary to manually press down the rotary switch again and turn the rotary switch to connect the gas channel before the gas can be used normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0026] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0027] Figure 1 A schematic cross-sectional view of a multifunctional gas self-closing ball valve provided in Example 1 of the present invention;

[0028] Figure 2 A schematic diagram of the exploded structure of a ball valve mechanism of a multifunctional gas self-closing ball valve provided in Example 1 of the present invention;

[0029] Figure 3 A schematic structural diagram of a multifunctional gas self-closing ball valve body and a limit groove provided in Example 1 of the present invention;

[0030] Figure 4 A schematic diagram of the exploded structure of a reset mechanism of a multifunctional gas self-closing ball valve provided in Example 1 of the present invention;

[0031] Figure 5 A schematic structural diagram of a valve cover and a filter sealing gasket of a multifunctional gas self-closing ball valve provided in Example 1 of the present invention;

[0032] Figure 6 A schematic structural diagram of a pagoda gourd-shaped Green connector installed at the outlet of a multifunctional gas self-closing ball valve provided in Example 2 of the present invention;

[0033] Figure 7 A schematic structural diagram of a Green washer and a Green locking cap of a multifunctional gas self-closing ball valve provided in Example 2 of the present invention;

[0034] In the figure: 1-ball valve mechanism; 101-valve ball; 102-bracket; 103-first spring; 104-slide rod; 105-valve; 106-locking spring; 107-first O-ring; 2-second O-ring; 3-valve stem; 4-second spring; 5-child lock card; 6-limit card; 7-limiting spring; 8-rotary switch; 9-third O-ring; 10-valve body; 1001-cross limit groove; 11-valve cover; 12-filter sealing gasket; 13-Green washer; 14-Green locking cap; 15-sealing gasket; 16-pagoda gourd mouth joint; 17-fourth O-ring. DETAILED DESCRIPTION

[0035] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Embodiment 1:

[0037] like Figure 1-5 As shown, the present invention provides a multifunctional gas self-closing ball valve, comprising:

[0038] The valve body 10 comprises an air inlet pipe and an air outlet pipe, the air inlet pipe is connected with the air outlet pipe to form a gas passage; a first groove is provided at the connection between the valve ball 101 and the air inlet pipe, a first O-ring 107 is provided inside the first groove, a second groove is provided at the connection between the valve ball 101 and the air outlet pipe, a third O-ring 9 is provided inside the second groove, the first O-ring 107 is in airtight contact with the air inlet end of the valve ball 101, and the third O-ring 9 is in airtight contact with the air outlet end of the valve ball 101 to achieve sealing; an external thread is provided on the outer side of the air outlet pipe port, which can be matched with various joints, such as metal bellows, hoses, etc.; the joint of the air outlet pipe is a pagoda gourd mouth joint 16, and a pagoda gourd mouth joint 16 is provided. The internal thread of the pagoda gourd mouth joint 16 is screwed with the external thread of the air outlet pipe; a sealing gasket 15 is provided on the inner side of the air outlet pipe to increase the airtightness of the gas pipeline; the air inlet pipe is connected to one end of the valve cover 11, and a fourth groove is provided at the connection between the air inlet pipe and the valve cover 11, and a fourth O-ring 17 is provided inside the fourth groove to increase the airtightness of the gas pipeline and make the valve cover 11 and the air inlet end of the valve ball 101 in airtight contact; an internal thread is provided on the inner side of the other end of the valve cover 11, so that the valve cover 11 can be directly connected to the pipeline, or the valve cover 11 can be connected to the pagoda gourd mouth joint 16 of the cylinder pressure reducing valve; a filter mesh sealing gasket 12 is provided on the inner side of the air inlet pipe.

[0039] The reset mechanism is arranged above the valve body 10. The reset mechanism includes a rotary switch 8 and a valve stem 3. The rotary switch 8 includes a rotary switch housing, a lock card, a second spring 4, and a limit clamp 7. The lock card is specifically a child lock card 5. Both ends of the bottom of the central axis of the child lock card 5 are respectively provided with protruding structures. One end of the second spring 4 is connected to the bottom of the rotary switch housing, and the other end of the second spring 4 is connected to the limit card 6. The second spring 4 is used to provide an elastic driving force for the rise of the child lock card 5. The interior of the rotary switch 8 is provided with a 360-degree rotating groove and a cross limit groove 1001. The limit card 6 is provided with an axial hole, and the outer side of the limit card 6 is provided with a convex edge, which is embedded in the cross limit groove 1001. At the bottom of the child lock card 5, a child lock card 5 locator is provided below the limit card 6, and the locator is used to limit the rotation angle of the child lock card 5 to 90 degrees each time; the central axis of the child lock card 5 is embedded in the axial hole, and the limit card 6 is provided with a limit clamping spring 7, and the limit clamping spring 7 is used to limit the displacement of the limit card 6; one end of the valve stem 3 is provided with a third groove, and the third groove is connected to the child lock card 5, and the other end of the valve stem 3 is connected to the valve ball 101, and the valve ball 101 is provided with a card groove, and the card groove is clamped with the valve stem 3, and is used to connect the valve ball 101 to the valve stem 3, and the valve stem 3 can move up and down in the vertical direction with the child lock card 5, and the gap between the valve stem 3 and the housing of the rotary switch 7 is provided with a second O-ring 2, which is used to increase the airtightness of the valve ball 101.

[0040] The ball valve structure 1 is provided with a valve ball 101, the valve ball 101 is provided with an air inlet end and an air outlet end, the inner wall of the middle position of the valve ball 101 is provided with an internal thread, the air inlet end is connected with the air inlet pipe, the air outlet end is connected with the air outlet pipe, and the junction end surface of the air outlet end and the air inlet end is provided with a sealing line for increasing the airtightness of the valve ball 101 and the valve 105; the interior of the valve ball 101 is provided with a self-closing component, and the self-closing component includes: an adjusting part, the adjusting part includes a bracket 102, and the outer side of the bracket 102 is uniformly There are three legs, and the bracket 102 is set as a hollow structure. The outer side of the bracket 102 is provided with an external thread near the outlet, and the external thread cooperates with the internal thread. The outlet of the bracket 102 is connected with the air inlet end, which is used to adjust the flow rate and pressure of the gas; the two end faces of the bracket 102 are provided with a spring base; the valve 105, the valve 105 is close to the outlet end; the pushing part, the pushing part is connected with the adjusting part, and the valve 105 is connected with the pushing part; the pushing part is used to adjust the gas flow rate and pressure according to the inlet end and the outlet end. The state control of pressure and flow controls the on-off of the gas channel. The pushing part includes: a sliding rod 104, which is coaxially embedded with the bracket 102. The sliding rod 104 includes an integrated base, a main rod, a valve 105 groove, and a guide cone. The base is close to the air inlet end, the base is matched with the inlet of the bracket 102, the main rod is matched with the outlet of the bracket 102, the valve 105 groove is engaged with the valve 105, and the valve 105 groove is used to prevent the sliding rod 104 from being separated from the valve 105; the guide cone is set at one end of the main rod near the outlet, and the gas collides with the guide cone when passing through the guide cone, so that the gas molecules become smaller and the combustion is more complete, and the installation of the valve 105 is also convenient; the first spring 103, the first spring 103 is sleeved on the outside of the main rod, one end of the first spring 103 is connected to the bracket 102 and fixed on the spring base of the bracket 102 near the outlet, and the other end of the first spring 103 is connected to one end of the sliding rod 104 near the inlet. The locking spring 106 is installed on the spring base of the bracket 102 near the inlet, and is used to adjust the pressure and flow of the gas to a suitable gas type during the rotation of the bracket 102. The locking spring 106 fixes the bracket 102 to the pipe wall at the air inlet end of the valve ball 101 to stop the bracket 102 from rotating. Therefore, the present invention is applicable to various gases.

[0041] The embodiment of the present invention provides a multifunctional gas self-closing ball valve, which is provided with a self-closing component. When the gas pressure or flow at the inlet end and the outlet end is unbalanced, the first spring 103 of the push part cannot push open the slide rod 104. When the first spring 103 is compressed, it pushes the valve 105 to instantly close the outlet end, thereby realizing automatic and precise gas closure without human intervention. When the gas self-closing ball valve is closed, the gas self-closing ball valve will automatically close when the gas supply is restored, thereby preventing the gas self-closing ball valve from opening automatically when the user does not need to use the gas due to forgetting to close the gas self-closing ball valve after the gas supply is stopped, thereby avoiding the occurrence of safety accidents and ensuring the personal and property safety of the user. The present invention is provided with a child lock card 5. Regardless of whether the gas channel is in a connected state or a disconnected state, the child lock card 5 cooperates with the cross limit groove 1001 to prevent children from turning the rotary switch 8. The present invention is provided with a reset mechanism. When resetting, the rotary switch 8 is pressed down and turned to close the gas channel, and the air inlet end of the valve ball 101 is connected with the air outlet end of the valve ball 101, so that the pressure and flow inside the valve ball 101 are restored to a balanced state, and the first spring 103 restores the original tension and pushes the slide rod 104 to open the valve 105. The gas channel is opened by pressing down and turning the rotary switch 8 again to achieve reset. After the gas channel is closed, the gas channel will not be automatically connected. It is necessary to manually press down the rotary switch 8 again and turn the rotary switch 8 to connect the gas channel before normal use of gas can be achieved.

[0042] Example 2

[0043] like Figure 6-7 As shown, the present invention provides a multifunctional gas self-closing ball valve. The structure of this embodiment is basically the same as that of embodiment 1, and the similarities are not repeated here. The difference lies in that the gas outlet is threadedly connected to the pagoda gourd mouth Green joint, and the pagoda gourd mouth Green joint is used to connect the hose, which is suitable for conveying low-pressure gas. When the pipeline gas pressure is reduced or ultra-low pressure during the peak gas consumption, the user can still use the gas normally; the Green gasket 13 and the Green locking cap 14 are coaxially installed on the inner side of the valve cover 11, which effectively increases the airtightness of the gas channel and is suitable for conveying high-pressure gas.

[0044] How it works

[0045] When the pipeline gas pressure is instantly over-pressured, the pipeline gas flow rate is instantly over-flowing, the rubber hose or metal bellows leaks slightly, when the rubber hose or metal bellows is damaged and leaks, the rubber hose or metal bellows falls off, the rubber hose or metal bellows cracks and leaks, or the rubber hose or metal bellows is bitten by a mouse, the pressure or flow rate at the air inlet and the air outlet is unbalanced, and the thrust of the first spring 103 cannot push open the sliding rod 104. When the first spring 103 is compressed, the sliding rod 104 pushes the valve 105 to instantly close the air outlet, blocking the valve ball 101. After the gas channel is closed, the gas channel cannot be opened automatically, and the rotary switch 8 must be pressed downward. The first spring 103 is gradually compressed under the action of pressure, and the child lock card 5 is pressed from the cross limit groove 1001 to the bottom of the 360-degree rotation groove. The top of the central axis of the child lock card 5 is in contact with the limit card 6, and the rotary switch 8 is rotated 90 degrees to put the rotary switch 8 in the closed state; when the rotary switch 8 is closed, the first spring 103 is in a compressed state, pushing the child lock card 5 upward until the raised structure and the raised edge are in contact with each other. The contact fit prevents the child lock card 5 from moving further upward, and at the same time makes the child lock card 5 engage with the cross limit groove 1001 to prevent the child from turning the rotary switch 8; when the rotary switch 8 is in the closed state, the pressure inside the valve ball 101 returns to a balanced state, the first spring 103 pushes the slide rod 104, and the slide rod 104 drives the valve 105 to open the air outlet end of the valve ball 101, so that the air inlet end and the air outlet end of the valve ball 101 are connected again, and the rotary switch 8 is pressed downward, and the first spring 103 is gradually compressed under the action of pressure, and the child lock card is locked. 5 is pressed from the cross limit groove 1001 to the bottom of the 360-degree rotating groove, and the top of the central axis of the child lock card 5 is in contact with the limit card 6, and the rotary switch 8 is rotated 90 degrees to turn the rotary switch 8 on, and the user can use the gas normally; when the rotary switch 8 is turned on, the first spring 103 is in a compressed state, pushing the child lock card 5 upward until the raised structure contacts and cooperates with the convex edge to prevent the child lock card 5 from moving further upward, and at the same time, the child lock card 5 is engaged with the cross limit groove 1001 to prevent children from twisting the rotary switch 8.

[0046] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A multifunctional gas self-closing ball valve, comprising a valve body, wherein the valve body comprises an air inlet pipe and an air outlet pipe, wherein the air inlet pipe is connected to the air outlet pipe to form a gas passage; characterized in that: Also includes: A reset mechanism, the reset mechanism is arranged above the valve body, the reset mechanism is provided with a valve stem and a rotary switch, one end of the valve stem is connected to the rotary switch, and is used to connect the gas channel by controlling the rotary switch; a lock card is provided inside the rotary switch; A ball valve mechanism, wherein the ball valve mechanism is provided with a valve ball, wherein the valve ball is provided with an air inlet end and an air outlet end, wherein the air inlet end is connected to the air inlet pipe, and the air outlet end is connected to the air outlet pipe; a self-closing component is provided inside the valve ball, and the self-closing component comprises: A regulating part, one end of which is connected to the gas inlet end and is used to regulate the flow rate and pressure of the gas; A valve, the valve being close to the air outlet; A pushing part, the pushing part is connected to the regulating part, and the valve is connected to the pushing part; the pushing part is used to control the on-off of the gas channel according to the state of the gas pressure and flow rate at the gas inlet end and the gas outlet end; The rotary switch comprises a rotary switch housing, a limit card is arranged inside the rotary switch housing, and the limit card cooperates with the lock card; A second spring is provided inside the rotary switch housing, one end of the second spring is connected to the bottom of the rotary switch housing, and the other end of the second spring is connected to the limit card, and the second spring is used to provide an upward pushing force for the lock card; The lock card is a child lock card, and protruding structures are respectively provided at both ends of the bottom of the central axis of the child lock card; The interior of the rotary switch is provided with a 360-degree rotating groove and a cross limit groove; the limit card is provided with an axial hole, and a convex edge is provided on the outer side of the limit card, which is embedded in the bottom of the cross limit groove, and a child lock card locator is provided below the limit card, and the locator is used to limit the rotation angle of the child lock card to 90 degrees each time; the central axis of the child lock card is embedded in the axial hole, and the limit card is provided with a limit clamping spring, which is used to limit the displacement of the limit card; a third groove is provided at one end of the valve stem, and the third groove is connected to the child lock card, and the other end of the valve is connected to the valve ball, and the valve ball is provided with a clamping groove, which is clamped with the valve stem, and is used to connect the valve ball and the valve stem, and the valve stem can move up and down in the vertical direction with the child lock card, and a second O-ring is provided in the gap between the valve stem and the rotary switch housing to increase the airtightness of the valve ball; The regulating part includes a bracket, the bracket is set as a hollow structure, the hollow structure is provided with an inlet and an outlet, the inlet is connected to the air inlet end, the outlet is connected to the air outlet end, and the diameter of the inlet is greater than the diameter of the outlet; The driving part comprises: A slide bar, the slide bar is coaxially embedded with the bracket; A first spring, wherein the first spring is sleeved on the outer side of the slide bar, one end of the first spring is connected to the bracket, and the other end of the first spring is connected to the slide bar; The sliding rod includes an integrally arranged base, a main rod, a valve groove, and a guide cone. The base is close to the air inlet end, the base cooperates with the inlet of the bracket, the main rod cooperates with the outlet of the bracket, the valve groove cooperates with the valve clip, and the valve groove is used to prevent the sliding rod from being separated from the valve; the guide cone is arranged at one end of the main rod close to the outlet.

2. The multifunctional gas self-closing ball valve according to claim 1 is characterized in that: A locking spring is provided at the bottom of the bracket, and the locking spring is used to fix the position of the bracket.

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