Overflow cut-off assembly on intelligent cut-off pressure reducing valve

Abstract

The utility model discloses an overflowing cut-off assembly on an intelligent cut-off pressure reducing valve, the pressure reducing valve comprises a valve body, and a reset device is arranged on the valve body; a first cavity and a second cavity are formed in the valve body, and the first cavity is communicated with the second cavity; the overflowing cut-off assembly is arranged in the second cavity, one end of the reset device is arranged in the first cavity, and the reset device is arranged above the overflowing cut-off assembly; the overflowing cut-off assembly comprises a cut-off ball and a sealing seat, and the cut-off ball is arranged on the sealing seat and located on the side, opposite to the communicating position, of the first cavity and the second cavity. The air flow extrudes the cut-off ball to the communicating part of the first cavity and the second cavity; the cut-off ball is arranged at the communicating position of the first cavity and the second cavity, so that the first cavity and the second cavity do not communicate with each other, airflow circulation is cut off, and airflow overflowing is prevented; when the hand wheel is pressed downwards, the valve is in contact with the cut-off ball, and the cut-off ball is pressed to move downwards, so that the first cavity and the second cavity are communicated again; the structure is simple, convenience and rapidness are achieved, and the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure reducing valves, in particular to an over-current cut-off assembly on an intelligent cut-off pressure reducing valve. Background Art

[0002] Liquefied gas is one of the essential energy sources in people's daily life and production. For example, in restaurants or other catering industries, liquefied gas cylinders are widely used for cooking, etc. However, while bringing convenience to our daily life, liquefied gas cylinders also have some potential safety hazards. For example, in recent years, various disaster accidents caused by gas leakage due to the detachment of the liquefied gas cylinder hose have occurred frequently, resulting in not only huge casualties but also immeasurable economic losses. If the liquefied gas can be cut off in time when gas leakage occurs after the detachment of the liquefied gas cylinder hose, not only can the source of the accident be eliminated, but also various explosion disaster accidents caused by the leakage of the liquefied gas cylinder can be reduced or even avoided, protecting people's lives and property safety. Although there are many types of over-flow cut-off protection devices on the market at present, most of them are for civil pipeline gas, and the research on the over-flow automatic cut-off and reset protection of daily-use liquefied gas cylinders is relatively blank. Content of the Utility Model

[0003] The purpose of the utility model is to solve the defects existing in the prior art, and to provide an over-current cut-off assembly on an intelligent cut-off pressure reducing valve.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] An over-current cut-off assembly on an intelligent cut-off pressure reducing valve, the pressure reducing valve includes a valve body, and a reset device is arranged on the valve body; a first cavity and a second cavity are arranged in the valve body, and the first cavity communicates with the second cavity; the over-current cut-off assembly is placed in the second cavity, one end of the reset device is placed in the first cavity, and the reset device is placed above the over-current cut-off assembly; the over-current cut-off assembly includes a cut-off ball and a sealing seat, and the cut-off ball is placed on the sealing seat and is located on one side of the relative communication between the first cavity and the second cavity.

[0006] Preferably, the sealing seat is in a hollow shape, and a plurality of support columns are arranged equidistantly around the inside of the sealing seat; an inclined surface is arranged on each support column, and the cut-off ball is placed on the inclined surface.

[0007] Preferably, the diameter of the cut-off ball is larger than the diameter of the relative communication part of the first cavity and the second cavity.

[0008] Preferably, the reset device includes a valve flap assembly and a handwheel assembly, and the valve flap assembly is connected to the handwheel assembly; the valve flap assembly includes a flap and a valve flap, the valve flap is disposed in the first cavity, and one end of the valve flap is disposed on one side of the communication between the first cavity and the second cavity and above the cut-off ball; one end of the flap is inserted into the valve flap, and the other end of the flap is connected to the handwheel assembly.

[0009] Preferably, the handwheel assembly includes a handwheel, a valve stem, a friction plate and a nut; the first cavity is provided with an opening, and a compression nut is provided at the opening; one end of the valve stem passes through the compression nut and is disposed in the first cavity, and the valve stem is inserted into the flap; the other end of the valve stem is disposed in the handwheel and connected to the nut; the friction plate is sleeved on the valve stem and abuts against the compression nut.

[0010] Preferably, the first cavity is provided with a first step surface at the opening, a sealing gasket is provided on the first step surface, and the sealing gasket is sleeved on the valve stem; an annular groove is provided in the compression nut, and a sealing ring is provided in the annular groove, and the sealing ring is sleeved on the valve stem.

[0011] Preferably, a third cavity is provided in the handwheel, and a stop block and a return spring are provided in the third cavity; the nut is disposed in the stop block, a second step surface is provided around the third cavity, the return spring is sleeved on the valve stem, one end of the return spring abuts against the second step surface, and the other end of the return spring abuts against the nut.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] The present utility model designs an overcurrent cut-off assembly on an intelligent cut-off pressure reducing valve. When the air flow is too large, the air flow squeezes the cut-off ball to the communication between the first cavity and the second cavity; by placing the cut-off ball at the communication between the first cavity and the second cavity, the first cavity and the second cavity are not communicated, the air flow is cut off, and the overcurrent of the air flow is prevented; when the handwheel is pressed downward, the valve flap contacts the cut-off ball, presses the cut-off ball downward, so that the cut-off ball returns from the communication between the first cavity and the second cavity to the sealing seat, and the first cavity and the second cavity are communicated again; when the handwheel is pressed and rotated, the handwheel drives the flap and the valve flap to rotate through the valve stem, so that the first cavity and the second cavity are communicated, and the air flow normally flows through; the second nut squeezes the compression spring, and the handwheel contacts the friction plate; it is convenient and fast, and improves the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present utility model will become apparent and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, wherein:

[0015] Figure 1 Schematic structural view of the overcurrent cut-off assembly proposed by the present utility model placed inside the valve body;

[0016] Figure 2 Schematic structural view of the overcurrent cut-off assembly proposed by the present utility model;

[0017] Figure 3 Schematic structural view of the sealing seat proposed by the present utility model;

[0018] Figure 4 Cross-sectional view of the overcurrent cut-off assembly and the reset device placed on the valve body proposed by the present utility model;

[0019] Figure 5 Cross-sectional view of the handwheel assembly proposed by the present utility model;

[0020] Figure 6 Cross-sectional view of the valve body proposed by the present utility model;

[0021] Figure 7 Cross-sectional view of the compression nut proposed by the present utility model.

[0022] Legend:

[0023] 1. Overcurrent cut-off assembly, 3. Cut-off ball, 4. Sealing seat, 5. Flap assembly, 6. Handwheel assembly, 41. Support column, 42. Inclined surface, 51. Paddle, 52. Flap, 61. Handwheel, 62. Valve stem, 63. Friction plate, 64. Nut, 65. Third cavity, 66. Stop block, 67. Return spring, 68. Second step surface, 100. Valve body, 101. First cavity, 102. Second cavity, 1011. Opening, 1012. Compression nut, 1013. First step surface, 1014. Sealing gasket, 1015. Annular groove, 1016. Sealing ring. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the features defined as "first", "second", "third" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more; in addition, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Referring to Figures 1 to 7 As shown, an overcurrent cut-off component on an intelligent cut-off pressure reducing valve. The pressure reducing valve includes a valve body 100, and a reset device is arranged on the valve body 100; a first cavity 101 and a second cavity 102 are arranged in the valve body 100, and the first cavity 101 communicates with the second cavity 102 relatively; the overcurrent cut-off component 1 is arranged in the second cavity 102, one end of the reset device is arranged in the first cavity 101, and the reset device is arranged above the overcurrent cut-off component 1; the overcurrent cut-off component 1 includes a cut-off ball 3 and a sealing seat 4, and the cut-off ball 3 is arranged on the sealing seat 4 and is located on one side of the relative communication between the first cavity 101 and the second cavity 102.

[0027] Among them, the sealing seat 4 is in a hollow shape, and a plurality of support columns 41 are arranged equidistantly around the inside of the sealing seat 4; an inclined surface 42 is arranged on each support column 41, and the cut-off ball 3 is arranged on the inclined surface 42; the diameter of the cut-off ball 3 is larger than the diameter of the communication part between the first cavity 101 and the second cavity 102; when the air flow is too large, the air flow squeezes the cut-off ball 3 to the communication part between the first cavity 101 and the second cavity 102; by arranging the cut-off ball 3 at the communication part between the first cavity 101 and the second cavity 102, the first cavity 101 and the second cavity 102 are not in communication, the air flow circulation is cut off, and the air flow overcurrent is prevented; the air flow is automatically cut off, which is convenient and fast, and improves the safety of use.

[0028] The reset device includes a valve component 5 and a handwheel component 6, and the valve component 5 is connected to the handwheel component 6; the valve component 5 includes a paddle 51 and a valve 52, the valve 52 is placed in the first cavity 101, and one end of the valve 52 is placed on one side of the communication between the first cavity 101 and the second cavity 102 and is located above the cut-off ball 3; one end of the paddle 51 is inserted into the valve 52, and the other end of the paddle 51 is connected to the handwheel component 6; pressing down the handwheel 61, the valve 52 contacts the cut-off ball 3, presses the cut-off ball 3 downwards, so that the cut-off ball 3 returns from the communication between the first cavity 101 and the second cavity 102 to the sealing seat 4, and makes the first cavity 101 and the second cavity 102 communicate with each other again.

[0029] The handwheel component 6 includes a handwheel 61, a valve stem 62, a friction plate 63 and a nut 64; the first cavity 101 is provided with an opening 1011, and a compression nut 1012 is arranged at the opening 1011; one end of the valve stem 62 passes through the compression nut 1012 and is placed in the first cavity 101, and the valve stem 62 is inserted and connected with the paddle 51; the other end of the valve stem 62 is placed in the handwheel 61 and is connected with the nut 64; the friction plate 63 is sleeved on the valve stem 62 and abuts against the compression nut 1012; the first cavity 101 is provided with a first step surface 1013 at the opening 1011, and a sealing gasket 1014 is arranged on the first step surface 1013, and the sealing gasket 1014 is sleeved on the valve stem 62; an annular groove 1015 is arranged in the compression nut 1012, and a sealing ring 1016 is arranged in the annular groove 1015, and the sealing ring 1016 is sleeved on the valve stem 62.

[0030] A third cavity 65 is arranged in the handwheel 61, and a stop block 66 and a return spring 67 are arranged in the third cavity 65; the nut 64 is placed in the stop block 66, a second step surface 68 is arranged around the third cavity 65, the return spring 67 is sleeved on the valve stem 62, one end of the return spring 67 abuts against the second step surface 68, and the other end of the return spring 67 abuts against the nut 64; pressing and rotating the handwheel 61, the handwheel 61 drives the paddle 51 and the valve 52 to rotate through the valve stem 62, so that the first cavity 101 and the second cavity 102 communicate with each other relatively, and the air flow flows through normally; the second nut 64 squeezes the compression spring 67, and the handwheel 61 contacts the friction plate 63.

[0031] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims

1. An over-current cut-off assembly on an intelligent cut-off pressure reducing valve, the pressure reducing valve comprising a valve body, the valve body being provided with a reset device; characterized in that: A first cavity and a second cavity are provided in the valve body, and the first cavity is relatively connected to the second cavity; the overcurrent cut-off assembly is placed in the second cavity, one end of the reset device is placed in the first cavity, and the reset device is placed above the overcurrent cut-off assembly; the overcurrent cut-off assembly includes a cut-off ball and a sealing seat, and the cut-off ball is placed on the sealing seat and is located on the side of the relative connection between the first cavity and the second cavity.

2. According to claim 1, the over-current cut-off component on the intelligent cut-off pressure reducing valve is characterized in that: The sealing seat is hollow, and a plurality of supporting columns are arranged around the sealing seat at equal intervals; each supporting column is provided with an inclined surface, and the cutting ball is placed on the inclined surface.

3. According to claim 2, the overcurrent cut-off component on the intelligent cut-off pressure reducing valve is characterized in that: The diameter of the cut-off ball is larger than the diameter of the connecting point between the first cavity and the second cavity.

4. According to claim 3, the over-current cut-off component on the intelligent cut-off pressure reducing valve is characterized in that: The resetting device includes a valve assembly and a handwheel assembly, and the valve assembly is connected to the handwheel assembly; the valve assembly includes a paddle and a valve, and the valve is placed in the first cavity, and one end of the valve is placed on the side of the connection between the first cavity and the second cavity and above the cut-off ball; one end of the paddle is inserted into the valve, and the other end of the paddle is connected to the handwheel assembly.

5. According to claim 4, the overcurrent cut-off component on the intelligent cut-off pressure reducing valve is characterized in that: The handwheel assembly includes a handwheel, a valve stem, a friction plate and a nut; the first cavity is provided with an opening, and a clamping nut is provided at the opening; one end of the valve stem passes through the clamping nut and is placed in the first cavity, and the valve stem is plugged into the paddle; the other end of the valve stem is placed in the handwheel and connected to the nut; the friction plate is sleeved on the valve stem and abuts against the clamping nut.

6. The over-current cut-off assembly on the intelligent cut-off pressure reducing valve according to claim 5, characterized in that: The first cavity is provided with a first step surface at the opening, a sealing gasket is provided on the first step surface, and the sealing gasket is sleeved on the valve stem; an annular groove is provided in the clamping nut, a sealing ring is provided in the annular groove, and the sealing ring is sleeved on the valve stem.

7. The over-current cut-off assembly on the intelligent cut-off pressure reducing valve according to claim 6, characterized in that: A third cavity is provided in the hand wheel, and a stopper and a return spring are provided in the third cavity; the nut is placed in the stopper, and a second step surface is provided around the third cavity. The return spring is sleeved on the valve stem, and one end of the return spring abuts against the second step surface, and the other end of the return spring abuts against the nut.

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