Connecting device on cut-off pressure reducing valve

Abstract

The utility model discloses a connecting device on a cut-off pressure reducing valve, the cut-off pressure reducing valve comprises a valve body, and the connecting device is arranged on the valve body; the connecting device comprises a first tightening head, a second tightening head, a sealing nozzle and a leather cup; the valve body is sleeved with the second tightening head, and the second tightening head is sleeved with the first tightening head. One end of the sealing nozzle is arranged in the valve body, and the other end of the sealing nozzle is arranged outside the valve body and abuts against the valve body. The leather cup is sleeved on the sealing nozzle; the first baffle plate limits the first stop block in the second groove; the inner wall of the second groove is in an equidistant regular hexagon shape, and the first check block is in an equidistant regular hexagon shape. The first stop block is matched with the second groove; the first tightening head and the second tightening head are connected more tightly, and the second tightening head can be taken down from the valve body conveniently; better sealing performance can be achieved through the sealing nozzle, and gas flow is not affected; the first annular step surface is matched with the second annular step surface, so that the movement distance of the second tightening head on the valve body is prevented from being too large.

Description

Technical Field

[0001] The utility model relates to the technical field of cut-off pressure reducing valves, in particular to a connecting device on a cut-off pressure reducing valve. Background Art

[0002] The pressure reducing valve reduces the inlet pressure to a certain required outlet pressure through adjustment, and relies on the energy of the medium itself to automatically maintain the outlet pressure in a stable state. From the perspective of fluid mechanics, the pressure reducing valve is a throttling element with variable local resistance, that is, by changing the throttling area, the flow rate and the kinetic energy of the fluid are changed, resulting in different pressure losses, thereby achieving the purpose of reducing pressure; then, relying on the adjustment of the control and regulation system, the fluctuation of the pressure behind the valve is balanced with the spring force, so that the pressure behind the valve remains constant within a certain error range.

[0003] With the increasing popularity of gas, the number of users is constantly increasing, which also brings safety hazards to people. The kitchen is a place with high oil smoke, and such a place has high requirements for gas pipes. At present, the pipeline from the pressure reducing valve to the stove generally uses a rubber hose, which is very easy to age in such a high oil smoke environment; and it also makes the connection between the rubber hose and the pressure reducing valve body prone to problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a connection device for cutting off a pressure reducing valve.

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

[0006] A connecting device on a cut-off pressure reducing valve, the cut-off pressure reducing valve comprises a valve body, the connecting device is placed on the valve body; the connecting device comprises a first tightening head, a second tightening head, a sealing nozzle and a leather cup; the second tightening head is sleeved on the valve body, and the first tightening head is sleeved on the second tightening head; one end of the sealing nozzle is placed in the valve body, and the other end of the sealing nozzle is placed outside the valve body and in conflict with the valve body; the leather cup is sleeved on the sealing nozzle.

[0007] Preferably, the valve body is provided with a first cavity, a second cavity and a third cavity, and the first cavity, the second cavity and the third cavity are relatively connected; the sealing nozzle is provided with a first through cavity, and the first through cavity is relatively connected with the first cavity.

[0008] Preferably, a first groove is provided in the first tightening head, a second groove is provided at the bottom of the first groove, a first through hole is provided at the bottom of the second groove, and a first baffle is provided around the first through hole.

[0009] Preferably, a first stopper is sleeved on the second tightening head, one end of the second tightening head is placed in the first groove, and the other end of the second tightening head passes through the first through hole and is placed outside the first tightening head; the first stopper is placed in the second groove and conflicts with the first baffle.

[0010] Preferably, an annular groove is provided on the sealing mouth, and the leather cup is placed in the annular groove.

[0011] Preferably, the inner wall of the second groove is in the shape of an equidistant regular internal hexagon.

[0012] Preferably, the first stopper is in the shape of an equidistant regular hexagon.

[0013] Preferably, a first annular step surface is provided in the second tightening head at one side of the valve body, and a second annular step surface is provided on the valve body at a position symmetrical to the first annular step surface.

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

[0015] The utility model designs a connecting device on a cut-off pressure reducing valve, wherein a first baffle limits a first block to be located in a second groove; an inner wall of the second groove is in an equidistant regular inner hexagonal shape, and the first block is in an equidistant regular hexagonal shape; the first block is matched with the second groove; the first tightening head is more tightly connected with the second tightening head, and it is also convenient to remove the second tightening head from the valve body; a sealing mouth can have better sealing performance and does not affect the flow of gas; the first annular step surface cooperates with the second annular step surface to prevent the second tightening head from moving too far on the valve body; the connection between the connecting device and the valve body is tighter, and safety accidents are less likely to occur. 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 structural schematic diagram of the connection between the connecting device proposed by the utility model and the valve body;

[0018] Figure 2 This is a cross-sectional view of the connecting device and the valve body proposed by the utility model;

[0019] Figure 3 This is a structural schematic diagram of the first tightening head proposed by the utility model;

[0020] Figure 4 This is a structural schematic diagram of the second tightening head proposed by the utility model;

[0021] Figure 5This is a schematic structural diagram of the sealing nozzle proposed by the utility model.

[0022] Legend:

[0023] 1. First tightening head, 2. Second tightening head, 3. Sealing mouth, 4. Leather cup, 11. First groove, 12. Second groove, 13. First through hole, 14. First baffle, 21. First stopper, 22. First annular step surface, 31. First through cavity, 32. Annular groove, 100. Valve body, 101. First cavity, 102. Second cavity, 103. Third cavity, 104. Second annular step surface. DETAILED DESCRIPTION

[0024] 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.

[0025] 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.

[0026] Reference Figures 1 to 5As shown, a connecting device on a cut-off pressure reducing valve, the cut-off pressure reducing valve includes a valve body 100, and the connecting device is placed on the valve body 100; the connecting device includes a first tightening head 1, a second tightening head 2, a sealing nozzle 3 and a leather cup 4; the second tightening head 2 is sleeved on the valve body 100, and the first tightening head 1 is sleeved on the second tightening head 2; one end of the sealing nozzle 3 is placed in the valve body 100, and the other end of the sealing nozzle 3 is placed outside the valve body 100 and in conflict with the valve body 100; the leather cup 4 is sleeved on the sealing nozzle 3.

[0027] Among them, the valve body 100 is provided with a first cavity 101, a second cavity 102 and a third cavity 103, and the first cavity 101, the second cavity 102 and the third cavity 103 are relatively connected; a first through cavity 31 is provided in the sealing nozzle 3, and the first through cavity 31 is relatively connected with the first cavity 101.

[0028] A first groove 11 is provided in the first tightening head 1, a second groove 12 is provided at the bottom of the first groove 11, a first through hole 13 is provided at the bottom of the second groove 12, and a first baffle 14 is provided around the first through hole 13; a first stopper 21 is sleeved on the second tightening head 2, one end of the second tightening head 2 is placed in the first groove 11, and the other end of the second tightening head 2 passes through the first through hole 13 and is placed outside the first tightening head 1; the first stopper 21 is placed in the second groove 12 and conflicts with the first baffle 14, and the first baffle 14 limits the first stopper 21 in the second groove 12; the inner wall of the second groove 12 is an equidistant regular inner hexagonal shape, and the first stopper 21 is an equidistant regular hexagonal shape; the first stopper 21 coincides with the second groove 12, so that the first tightening head 1 and the second tightening head 2 are more tightly connected, and it is also convenient to remove the second tightening head 2 from the valve body 100; the connection between the connecting device and the valve body 100 is tighter, and safety accidents are not prone to occur.

[0029] An annular groove 32 is provided on the sealing nozzle 3, and the leather cup 4 is placed in the annular groove 32; the sealing nozzle 3 can achieve better sealing without affecting the gas flow; a first annular step surface 22 is provided on one side of the valve body 100 in the second tightening head 2, and a second annular step surface 104 is provided on the valve body 100 at a position symmetrical to the first annular step surface 22; the first annular step surface 22 cooperates with the second annular step surface 104 to prevent the second tightening head 2 from moving too far on the valve body 100.

[0030] 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.

[0031] 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 connection device on a cut-off pressure reducing valve, the cut-off pressure reducing valve comprising a valve body, the connection device being disposed on the valve body; characterized in that: The connecting device includes a first tightening head, a second tightening head, a sealing nozzle and a leather cup; the second tightening head is sleeved on the valve body, and the first tightening head is sleeved on the second tightening head; one end of the sealing nozzle is placed in the valve body, and the other end of the sealing nozzle is placed outside the valve body and in conflict with the valve body; the leather cup is sleeved on the sealing nozzle.

2. A connection device for a cut-off pressure reducing valve according to claim 1, characterized in that: The valve body is provided with a first cavity, a second cavity and a third cavity, and the first cavity, the second cavity and the third cavity are relatively connected; the sealing nozzle is provided with a first through cavity, and the first through cavity is relatively connected with the first cavity.

3. A connection device for cutting off a pressure reducing valve according to claim 2, characterized in that: A first groove is arranged in the first tightening head, a second groove is arranged at the bottom of the first groove, a first through hole is arranged at the bottom of the second groove, and a first baffle is arranged around the first through hole.

4. A connection device for a cut-off pressure reducing valve according to claim 3, characterized in that: A first stopper is sleeved on the second tightening head, one end of the second tightening head is placed in the first groove, and the other end of the second tightening head passes through the first through hole and is placed outside the first tightening head; the first stopper is placed in the second groove and contacts the first stopper.

5. A connection device for a cut-off pressure reducing valve according to claim 1, characterized in that: The sealing mouth is provided with an annular groove, and the leather cup is placed in the annular groove.

6. A connection device for a cut-off pressure reducing valve according to claim 3, characterized in that: The inner wall of the second groove is in the shape of an equidistant regular internal hexagon.

7. A connection device for a cut-off pressure reducing valve according to claim 4, characterized in that: The first stopper is in the shape of an equidistant regular hexagon.

8. A connection device for a cut-off pressure reducing valve according to claim 1, characterized in that: A first annular step surface is provided in the second tightening head at one side of the valve body, and a second annular step surface is provided on the valve body at a position symmetrical to the first annular step surface.

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