Reset structure applied to cut-off pressure reducing valve

Abstract

The utility model discloses a reset structure applied to a cut-off pressure reducing valve, the cut-off pressure reducing valve comprises a valve body, a cut-off structure is arranged in the valve body, and the position of the cut-off structure corresponds to the position of the reset structure; the reset structure comprises a fixed guide seat, a reset push rod, a reset cap and a reset spring; the reset cap is arranged on the fixed guide seat, one end of the reset push rod is connected with the reset cap, and the other end of the reset push rod penetrates through the fixed guide seat and is arranged outside the fixed guide seat; the reset spring is arranged in the reset cap in a sleeved mode and arranged on the reset push rod in a sleeved mode. A reset cap is pressed, the reset cap compresses a reset spring, so that a reset push rod moves downwards, the reset push rod pushes a cut-off ball, and the cut-off ball is reset; after the cut-off ball is reset, the first cavity and the second cavity are communicated with each other again; the reset cap is loosened, the reset spring and the reset push rod return to the initial position, and the annular baffle limits the reset push rod, so that the reset cap cannot be separated from the fixed guide seat; the structure is simple and operation is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of cut-off pressure reducing valves, in particular to a reset structure applied to cut-off pressure reducing valves. Background Art

[0002] For the purpose of safety, people have made various improvements to the pressure reducing valve, and some have even applied for patents. For example, Chinese patent literature discloses a multifunctional gas pressure reducing valve [application number: 201320591235.3; authorization announcement number: CN203477508U], which includes an upper shell and a lower shell, a pressure regulating rubber diaphragm is installed between the upper shell and the lower shell, a pressure regulating spring with a set pressure is inserted between the pressure regulating rubber diaphragm and the upper shell, a pressure regulating hook is installed at the center of the pressure regulating rubber diaphragm, and the lower shell has interconnected high-pressure air inlet channels, a forward closing regulating spring, and a pressure regulating spring. A pressure nozzle, a gas pressure chamber, and a low-pressure air outlet channel. A forward-closing elastic valve core is installed at an appropriate position in the high-pressure air inlet channel to align with the forward-closing pressure regulating nozzle. A free-rolling or spring-pulled spherical valve core is installed at an appropriate position in front of the forward-closing elastic valve core to align with the flow control valve port. A pull-up starting button is installed at the top of the center of the upper shell body. The automatic pull rod is inserted into the interior of the upper shell body and connected with the top of the pressure regulating hook. A convex tooth is installed on the starting pull rod to fit into the inclined groove in the starting pull button guide sleeve. A sealing rubber ring is also installed around the outer periphery of the high-pressure air inlet channel.

[0003] The above-mentioned multifunctional gas pressure reducing valve can improve the safety of use, but the structure is improved on the basis of the ordinary gas pressure reducing valve, and the structure is complicated. Moreover, when overflow or overpressure occurs at the air inlet end, there is a risk that the ball valve core will be impacted and embedded in the flow control valve port, causing the pressure reducing valve to be unusable and inconvenient to maintain. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a reset structure applied to a cut-off pressure reducing valve.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A reset structure applied to a cut-off pressure reducing valve, the cut-off pressure reducing valve comprising a valve body, a cut-off structure being arranged in the valve body, the cut-off structure corresponding to the reset structure position; the reset structure comprising a fixed guide seat, a reset push rod, a reset cap and a reset spring; the reset cap is placed on the fixed guide seat, one end of the reset push rod is connected to the reset cap, and the other end of the reset push rod passes through the fixed guide seat and is placed outside the fixed guide seat; the reset spring is sleeved inside the reset cap and sleeved on the reset push rod.

[0007] Preferably, a first cavity, a second cavity and a third cavity are provided in the valve body; the second cavity is communicated with the first cavity and the third cavity respectively, and the cut-off structure is placed in the second cavity; the cut-off structure includes a cut-off ball, and a flow cut-off sealing gasket is provided at the connection between the first cavity and the second cavity, and the cut-off ball is placed in the flow cut-off sealing gasket and cuts off the connection between the first cavity and the second cavity.

[0008] Preferably, a fixing ring and a first sealing ring are sequentially sleeved on the fixing guide seat; a first step surface is arranged around the first cavity, and the first sealing ring is placed on the first step surface.

[0009] Preferably, an annular baffle is provided inside the fixed guide seat, a through hole is provided on the annular baffle, and the bottom of the reset push rod passes through the through hole and is placed outside the fixed guide seat.

[0010] Preferably, the reset push rod is located on one side of the annular baffle and is sequentially sleeved with a second sealing ring and a fixing block, and the annular baffle is located on one side of the second sealing ring and is provided with an inclined surface, and the second sealing ring is in conflict with the inclined surface.

[0011] Preferably, a sleeve is provided inside the reset cap, and the top of the reset push rod is placed in the sleeve; one end of the reset spring is sleeved on the reset push rod and abuts against the annular baffle, and the other end of the reset spring is sleeved on the sleeve and abuts against the inner wall of the reset cap.

[0012] Preferably, a second step surface is further provided in the first cavity.

[0013] Preferably, the reset push rod corresponds to the position of the cut-off ball, and the reset push rod is placed above the cut-off ball.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model designs a reset structure applied to a cut-off pressure reducing valve. When the cut-off ball needs to be reset, the reset cap is pressed, the reset cap compresses the reset spring, so that the reset push rod moves downward, and the reset push rod pushes the cut-off ball to reset the cut-off ball. After the cut-off ball is reset, the first cavity and the second cavity are connected again. The reset cap is loosened, the reset spring and the reset push rod return to the initial positions, and the annular baffle limits the reset push rod, so that the reset cap will not be separated from the fixed guide seat. The utility model has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the structure of the reset structure proposed by the utility model;

[0018] Figure 2 A cross-sectional view of the reset structure proposed by the utility model;

[0019] Figure 3 This is a cross-sectional view of the fixed guide seat proposed by the utility model;

[0020] Figure 4 An exploded diagram of the reset structure proposed by the utility model;

[0021] Figure 5 This is a schematic diagram of the structure in which the reset structure and the cut-off structure proposed in the utility model are installed on the valve body;

[0022] Figure 6 This is a cross-sectional view of the reset structure and the cut-off structure proposed in the utility model installed on the valve body;

[0023] Figure 7 This is a cross-sectional view of the valve body proposed by the utility model.

[0024] Legend:

[0025] 1. Fixed guide seat, 2. Reset push rod, 3. Reset cap, 4. Reset spring, 11. Fixed ring, 12. First sealing ring, 13. Annular baffle, 14. Through hole, 15. Inclined surface, 21. Second sealing ring, 22. Fixed block, 31. Sleeve, 100. Valve body, 200. Cut-off structure, 300. Cut-off ball, 400. Reset structure, 500. First cavity, 501. First step surface, 502. Second step surface, 600. Second cavity, 700. Third cavity, 800. Over-current cut-off sealing gasket. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention. In addition, features defined as "first", "second", and "third" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more than two; in addition, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Reference Figures 1 to 7 As shown, a reset structure applied to a cut-off pressure reducing valve is shown, the cut-off pressure reducing valve comprises a valve body 100, a cut-off structure 200 is arranged inside the valve body 100, and the cut-off structure 200 corresponds to the reset structure 400 in position; the reset structure 400 comprises a fixed guide seat 1, a reset push rod 2, a reset cap 3 and a reset spring 4; the reset cap 3 is placed on the fixed guide seat 1, one end of the reset push rod 2 is connected to the reset cap 3, and the other end of the reset push rod 2 passes through the fixed guide seat 1 and is placed outside the fixed guide seat 1; the reset spring 4 is sleeved inside the reset cap 3 and sleeved on the reset push rod 2.

[0029] Among them, a first cavity 500, a second cavity 600 and a third cavity 700 are arranged in the valve body 100; the second cavity 600 is communicated with the first cavity 500 and the third cavity 700 respectively, and the cutting structure 200 is placed in the second cavity 600; the cutting structure 200 includes a cutting ball 300, and a flow cut-off sealing gasket 800 is arranged at the communication point between the first cavity 500 and the second cavity 600, and the cutting ball 300 is placed in the flow cut-off sealing gasket 800 and cuts off the communication between the first cavity 500 and the second cavity 600; when the airflow in the first cavity 500, the second cavity 600 and the third cavity 700 is too large, the cutting structure 200 controls the movement of the cutting ball 300, and the cutting ball 300 moves to the flow cut-off sealing gasket 800, and cuts off the communication between the first cavity 500 and the second cavity 600, so that the gas in the first cavity 500 cannot enter the second cavity 600.

[0030] A fixing ring 11 and a first sealing ring 12 are sequentially sleeved on the fixed guide seat 1; a first step surface 501 is arranged around the first cavity 500, and the first sealing ring 12 is placed on the first step surface 501; the airtightness between the fixed guide seat 1 and the first cavity 500 is increased by the first sealing ring 12; an annular baffle 13 is arranged in the fixed guide seat 1, and a through hole 14 is arranged on the annular baffle 13, and the bottom of the reset push rod 2 passes through the through hole 14 and is placed outside the fixed guide seat 1; the reset push rod 2 is located on one side of the annular baffle 13 and is sequentially sleeved with a second sealing ring 21 and a fixed block 22, and the annular baffle 13 is located on one side of the second sealing ring 21 and is provided with an inclined surface 15, and the second sealing ring 21 conflicts with the inclined surface 15; the upward movement distance of the fixed block 22 is limited by the annular baffle 13, and the second sealing ring 21 is placed on one side of the annular baffle 13 to increase the airtightness of the through hole 14.

[0031] A sleeve 31 is provided in the reset cap 3, and the top of the reset push rod 2 is placed in the sleeve 31; one end of the reset spring 4 is sleeved on the reset push rod 2 and conflicts with the annular baffle 13, and the other end of the reset spring 4 is sleeved on the sleeve 31 and conflicts with the inner wall of the reset cap 3; a second step surface 502 is also provided in the first cavity 500, the reset push rod 2 corresponds to the position of the cut-off ball 300, and the reset push rod 2 is placed above the cut-off ball 300; when the cut-off ball 300 needs to be reset, the reset cap 3 is pressed, and the reset cap 3 compresses the reset spring 4, so that the reset push rod 2 moves downward, and the reset push rod 2 pushes the cut-off ball 300, so that the cut-off ball 300 is reset; after the cut-off ball 300 is reset, the first cavity 500 and the second cavity 600 are connected again; the reset cap 3 is released, the reset spring 4 and the reset push rod 2 return to the initial position, and the annular baffle 13 limits the reset push rod 2, so that the reset cap 3 will not be separated from the fixed guide seat 1.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does 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.

[0033] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A reset structure applied to a cut-off pressure reducing valve, the cut-off pressure reducing valve comprising a valve body, a cut-off structure is arranged in the valve body, and the cut-off structure corresponds to the reset structure; characterized in that: The reset structure includes a fixed guide seat, a reset push rod, a reset cap and a reset spring; the reset cap is placed on the fixed guide seat, one end of the reset push rod is connected to the reset cap, and the other end of the reset push rod passes through the fixed guide seat and is placed outside the fixed guide seat; the reset spring is sleeved inside the reset cap and sleeved on the reset push rod.

2. According to claim 1, a reset structure applied to a cut-off pressure reducing valve is characterized in that: A first cavity, a second cavity and a third cavity are arranged in the valve body; the second cavity is communicated with the first cavity and the third cavity respectively, and the cut-off structure is arranged in the second cavity; the cut-off structure comprises a cut-off ball, and a flow cut-off sealing gasket is arranged at the communication point between the first cavity and the second cavity, and the cut-off ball is arranged in the flow cut-off sealing gasket and cuts off the communication between the first cavity and the second cavity.

3. According to claim 2, a reset structure applied to a cut-off pressure reducing valve is characterized in that: A fixing ring and a first sealing ring are sequentially sleeved on the fixing guide seat; a first step surface is surrounded by the first cavity, and the first sealing ring is placed on the first step surface.

4. A reset structure applied to a cut-off pressure reducing valve according to claim 3, characterized in that: An annular baffle is arranged inside the fixed guide seat, and a through hole is arranged on the annular baffle. The bottom of the reset push rod passes through the through hole and is placed outside the fixed guide seat.

5. A reset structure applied to a cut-off pressure reducing valve according to claim 4, characterized in that: The reset push rod is located at one side of the annular baffle and is sequentially sleeved with a second sealing ring and a fixing block. The annular baffle is located at one side of the second sealing ring and is provided with an inclined surface, and the second sealing ring is in conflict with the inclined surface.

6. A reset structure applied to a cut-off pressure reducing valve according to claim 5, characterized in that: A sleeve is arranged inside the reset cap, and the top of the reset push rod is placed in the sleeve; one end of the reset spring is sleeved on the reset push rod and contacts the annular baffle, and the other end of the reset spring is sleeved on the sleeve and contacts the inner wall of the reset cap.

7. The reset structure applied to the cut-off pressure reducing valve according to claim 2, characterized in that: A second step surface is also disposed in the first cavity.

8. The reset structure applied to the cut-off pressure reducing valve according to claim 2, characterized in that: The reset push rod corresponds to the position of the cut-off ball, and the reset push rod is placed above the cut-off ball.

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