Second-stage pressure reducing valve for gas saving

Abstract

The utility model discloses a gas saving secondary pressure reducing valve, which belongs to the technical field of valves, and comprises a pressure reducing valve body and a flow adjusting shell, an adapter is arranged between the pressure reducing valve body and the flow adjusting shell, a flow control adjusting mechanism is arranged on the flow adjusting shell, and an air inlet pressure gauge is fixedly arranged at the front part of the flow adjusting shell. According to the pressure reducing valve, the pressure of gas in the pressure reducing valve body is adjusted through the valve switch, the two protective shells are closed to be arranged on the outer side of the valve switch, the valve switch is extruded and fixed through the rubber block on the inner side of the valve switch, and meanwhile the outer side of the valve switch is protected; and a bolt is driven by the elastic force of a spring to be inserted into an insertion hole to fix the fixed seat and the L-shaped connecting seat, so that the two protective shells are fixed, the valve switch is protected and locked, a user is effectively prevented from randomly adjusting the pressure, and the practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and more specifically to a throttling two-stage pressure reducing valve. Background Art

[0002] The gas pressure reducing valve is a special device that automatically reduces the working pressure of the pipeline. It can reduce the higher gas pressure in the pipeline before the valve to the required level of the pipeline after the valve. At present, in the process of controlling the gas pressure and flow control at the end of the welding shielding gas cylinder or pipeline, especially in the welding process, because the thickness of the welding object is different, the required gas flow pressure is different, so a pressure reducing valve is needed to adjust the gas pressure.

[0003] The utility model patent with announcement number CN220622938U discloses a two-stage throttling pressure reducing valve structure, wherein the air inlet joint is connected to the left side of the first shell, the piston pressure reducing valve is connected to the rear side of the first shell, and the piston pressure reducing valve performs a first-stage pressure reduction on the gas introduced into the first shell by the air inlet joint; the pressure regulating cover is connected to the top of the first shell, and the pressure regulating cover performs a second-stage manual pressure reduction on the gas introduced into the first shell by the air inlet joint; the bottom cover is connected to the bottom of the first shell; the pressure display head is connected to the front side of the first shell, and the pressure display head is used to display the gas pressure introduced into the first shell by the air inlet joint; the right side of the air inlet joint is connected to the flow monitoring component through the adapter, and the air outlet joint is connected to the air outlet of the flow monitoring component; the flow monitoring component is used to monitor the gas flow introduced from the adapter. The utility model can adjust the control pressure, reduce the gas waste caused by excessive pressure during welding, and can save more than 30% of the annual gas consumption for the factory and maintain the welding quality.

[0004] However, the above patent still has the following shortcomings: the valve switch is directly exposed to the outside, which is not convenient to fix and protect after adjustment, which may easily cause accidental adjustment by strangers, and has poor practicality; and it is not convenient to adjust the gas flow. For this reason, we propose a two-stage gas-saving pressure reducing valve. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model aims to provide a throttling two-stage pressure reducing valve.

[0006] In order to solve the above problems, the utility model adopts the following technical solutions:

[0007] A throttling two-stage pressure reducing valve comprises a pressure reducing valve body and a flow regulating shell, an adapter is arranged between the pressure reducing valve body and the flow regulating shell, a flow control regulating mechanism is arranged on the flow regulating shell, an intake pressure gauge is fixedly installed on the front part of the flow regulating shell, a pressure regulating cover is arranged on the top of the pressure reducing valve body, a valve switch is arranged on the top of the pressure regulating cover, a support rod is fixedly connected to the top surface of the pressure regulating cover, a support seat is arranged in the middle part of the support rod, a torsion spring is fixedly connected to the top and bottom surfaces of the support seat respectively, the torsion spring is sleeved on the outside of the support rod, a rotating ring is rotatably connected to the top and bottom of the support rod respectively, the ends of the two torsion springs are respectively connected to the two rotating rings, the ends of the two rotating rings are respectively fixedly connected to protective shells, the two protective shells are sleeved on the outside of the valve switch, a fixing mechanism is arranged on the front part of the two protective shells, and rubber blocks are arranged in the inner cavities of the two protective shells, and the side surfaces of the rubber blocks are pressed against the outer side surfaces of the valve switch.

[0008] As a preferred solution of the utility model, the flow control adjustment mechanism includes an adjustment column fixedly sleeved on one side of the flow adjustment shell and a conical tube fixedly sleeved on the other side of the flow adjustment shell, the end of the adapter is fixedly sleeved on one end of the inner cavity of the conical tube, a movable groove is opened at one end of the adjustment column, a screw is threadedly sleeved on the other end of the adjustment column, one end of the screw extends to the outside of the adjustment column and is fixedly connected with a knob, the other end of the screw extends to the inner cavity of the movable groove and is fixedly connected with a rotating column, one end of the rotating column extends to the other end of the inner cavity of the conical tube and is fixedly connected with a conical piston block, and the side surface of the conical piston block fits the inner wall of the conical tube.

[0009] As a preferred solution of the utility model, the fixing mechanism includes an L-shaped connecting seat fixedly connected to the front of one protective shell and a fixing seat fixedly connected to the front of another protective shell, the top surface of the L-shaped connecting seat is provided with a socket, the bottom surface of the fixing seat is provided with a lifting groove, the top surface of the inner cavity of the lifting groove is fixedly connected with a spring, the bottom end of the spring is fixedly connected with an extrusion plate, the bottom surface of the extrusion plate is fixedly connected with a pin, the bottom end of the pin is movably connected to the inner cavity of the socket, the top surface of the extrusion plate is fixedly connected with a pull rod, the top end of the pull rod is movably connected to the top of the fixing seat and is fixedly connected with the pull plate.

[0010] As a preferred solution of the utility model, an air inlet connector is provided on the side of the pressure reducing valve body, and a pressure display gauge is provided on the front of the pressure reducing valve body.

[0011] As a preferred solution of the utility model, a flow detector is arranged on the top of the flow regulating shell, and an air outlet connector is arranged on the bottom of the flow regulating shell.

[0012] As a preferred solution of the utility model, the outer diameter of the plug is in contact with the inner wall of the insertion hole, and the outer side surface of the extrusion plate is in contact with the inner wall of the lifting groove.

[0013] As a preferred solution of the utility model, the inner wall of the movable groove and the outer side surface of the rotating column are in contact with each other.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) In the utility model, the gas pressure in the pressure reducing valve body is adjusted by the valve switch, and two protective shells are closed and placed on the outside of the valve switch. The valve switch is squeezed and fixed by the rubber block on the inside of the valve switch, and the outside of the valve switch is protected at the same time. In addition, the elastic force of the spring drives the pin to be inserted into the socket to fix the fixing seat and the L-shaped connecting seat, thereby fixing the two protective shells, and then protecting and locking the valve switch, effectively preventing the user from adjusting the pressure at will.

[0016] (2) In the utility model, when the gas in the pressure reducing valve body enters into the flow regulating shell from the adapter and the tapered tube, the threaded cooperation between the screw and the adjusting column drives the tapered piston block to move, thereby adjusting the gap between the side of the tapered piston block and the inner wall of the tapered tube, and then adjusting the gas flow entering the flow regulating shell from the tapered tube, thereby adjusting the gas flow of the gas discharged. The air pressure of the gas discharged from the flow regulating shell can also be detected by an air inlet pressure gauge, which has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is an exploded view of the overall structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the pressure reducing valve body of the utility model;

[0020] Figure 4 It is a cross-sectional schematic diagram of the flow regulating shell of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the rubber block of the utility model;

[0022] Figure 6 It is a schematic diagram of the structure of the protective shell of the utility model;

[0023] Figure 7 For this utility model Figure 3 A is an enlarged schematic diagram;

[0024] Figure 8For this utility model Figure 6 The enlarged schematic diagram of point B in FIG.

[0025] Explanation of the numbers in the figure: 1. Pressure reducing valve body; 2. Adapter; 3. Flow regulating shell; 4. Flow control regulating mechanism; 5. Inlet pressure gauge; 6. Pressure regulating cover; 7. Valve switch; 8. Support rod; 9. Support seat; 10. Torsion spring; 11. Rotating ring; 12. Protective shell; 13. Fixing mechanism; 14. Adjusting column; 15. Conical tube; 16. Moving groove; 17. Screw; 18. Knob; 19. Rotating column; 20. Conical piston block; 21. Rubber block; 22. L-shaped connecting seat; 23. Fixed seat; 24. Socket; 25. Lifting slot; 26. Spring; 27. Extrusion plate; 28. Latch; 29. ​​Pull rod; 30. Pull plate; 31. Air outlet joint; 32. Flow detector; 33. Air inlet joint; 34. Pressure display gauge. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings 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 noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 utility model can be understood according to specific circumstances.

[0029] Example:

[0030] See also Figure 1-8A throttling two-stage pressure reducing valve comprises a pressure reducing valve body 1 and a flow regulating shell 3, an adapter 2 is arranged between the pressure reducing valve body 1 and the flow regulating shell 3, a flow control regulating mechanism 4 is arranged on the flow regulating shell 3, an intake pressure gauge 5 is fixedly installed on the front of the flow regulating shell 3, a pressure regulating cover 6 is arranged on the top of the pressure reducing valve body 1, a valve switch 7 is arranged on the top of the pressure regulating cover 6, a support rod 8 is fixedly connected to the top surface of the pressure regulating cover 6, a support seat 9 is arranged in the middle of the support rod 8, and the top and bottom surfaces of the support seat 9 are respectively fixed A torsion spring 10 is connected, and the torsion spring 10 is sleeved on the outside of the support rod 8. The top and bottom of the support rod 8 are rotatably connected with a rotating ring 11 respectively. The ends of the two torsion springs 10 are respectively connected to the two rotating rings 11. The ends of the two rotating rings 11 are respectively fixedly connected with protective shells 12. The two protective shells 12 are sleeved on the outside of the valve switch 7. The front of the two protective shells 12 is provided with a fixing mechanism 13. The inner cavity of the two protective shells 12 is provided with a rubber block 21, and the side of the rubber block 21 is squeezed with the outer side of the valve switch 7.

[0031] In this embodiment, the bottom surface of the protective shell 12 and the top surface of the pressure regulating cover 6 are in contact with each other, and the inner sides of the two protective shells 12 are in contact with each other, so that the valve switch 7 is protected by the two protective shells 12 .

[0032] For details, please refer to Figure 1 and Figure 4 The flow control adjustment mechanism 4 includes an adjustment column 14 fixedly sleeved on one side of the flow adjustment shell 3 and a tapered tube 15 fixedly sleeved on the other side of the flow adjustment shell 3. The end of the adapter 2 is fixedly sleeved on one end of the inner cavity of the tapered tube 15. A moving groove 16 is opened at one end of the adjustment column 14. A screw 17 is threadedly sleeved on the other end of the adjustment column 14. One end of the screw 17 extends to the outside of the adjustment column 14 and is fixedly connected to a knob 18. The other end of the screw 17 extends to the inner cavity of the moving groove 16 and is fixedly connected to a rotating column 19. One end of the rotating column 19 extends to the other end of the inner cavity of the tapered tube 15 and is fixedly connected to a tapered piston block 20. The side surface of the tapered piston block 20 fits the inner wall of the tapered tube 15.

[0033] For details, please refer to Figure 1 , Figure 6 and Figure 8The fixing mechanism 13 includes an L-shaped connecting seat 22 fixedly connected to the front of one protective shell 12 and a fixing seat 23 fixedly connected to the front of the other protective shell 12. The top surface of the L-shaped connecting seat 22 is provided with a socket 24, and the bottom surface of the fixing seat 23 is provided with a lifting groove 25. The top surface of the inner cavity of the lifting groove 25 is fixedly connected with a spring 26, and the bottom end of the spring 26 is fixedly connected with an extrusion plate 27. The bottom surface of the extrusion plate 27 is fixedly connected with a pin 28. The bottom end of the pin 28 is movably connected to the inner cavity of the socket 24. The top surface of the extrusion plate 27 is fixedly connected with a pull rod 29. The top end of the pull rod 29 is movably connected to the top of the fixing seat 23 and is fixedly connected with a pull plate 30.

[0034] In this embodiment, the elastic force of the spring 26 drives the latch 28 to be inserted into the insertion hole 24 , thereby connecting the two protective shells 12 .

[0035] For details, please refer to Figure 2 An air inlet connector 33 is provided on the side of the pressure reducing valve body 1 , and a pressure display gauge 34 is provided on the front of the pressure reducing valve body 1 .

[0036] In this embodiment, the air pressure is detected by a pressure display gauge 34 and the gas is introduced using an air inlet connector 33 .

[0037] For details, please refer to Figure 2 A flow detector 32 is disposed on the top of the flow regulating shell 3 , and an air outlet connector 31 is disposed on the bottom of the flow regulating shell 3 .

[0038] In this embodiment, the gas flow rate is measured by the flow detector 32 , and the gas is discharged through the gas outlet connector 31 .

[0039] For details, please refer to Figure 8 The outer diameter of the latch pin 28 fits with the inner wall of the insertion hole 24 , and the outer side surface of the extrusion plate 27 fits with the inner wall of the lifting groove 25 .

[0040] In this embodiment, the stability of the plug 28 inserted into the inner cavity of the socket 24 is ensured, and the stability of the extrusion plate 27 on the fixing seat 23 is ensured, thereby ensuring the stability of the connection between the fixing seat 23 and the L-shaped connecting seat 22, and further ensuring the stability of the connection between the two protective shells 12.

[0041] For details, please refer to Figure 4 The inner wall of the movable groove 16 and the outer side surface of the rotating column 19 are in contact with each other.

[0042] In this embodiment, the gas is prevented from entering the inner cavity of the movable groove 16 by the fit between the inner wall of the movable groove 16 and the side surface of the rotating column 19 .

[0043] Working principle: When in use, firstly, the gas is introduced into the pressure reducing valve body 1 from the air inlet joint 33 through the air guide pipe, and the gas pressure entering the pressure reducing valve body 1 is adjusted by turning the valve switch 7, and then the two protective shells 12 are turned to the outside of the valve switch 7. At this time, the torsion spring 10 is in a compressed state, so that the protective shell 12 can be automatically unfolded. When the inner sides of the two protective shells 12 are fitted together, the elastic force of the spring 26 is used to drive the extrusion plate 27 and the latch 28 to move downward, so that the latch 28 is inserted into the socket 24 to fix between the fixing seat 23 and the L-shaped connecting seat 22, and then the two protective shells 12 are fixed to the outside of the valve switch 7, and at the same time, the rubber block 21 on the inner side of the protective shell 12 squeezes and fixes the valve switch 7. , and then the gas after decompression in the pressure reducing valve body 1 enters the tapered tube 15 from the adapter 2, and the gas in the tapered tube 15 enters the inner cavity of the flow regulating shell 3. In addition, the knob 18 is turned to drive the screw 17 to rotate, and the threaded cooperation between the screw 17 and the adjusting column 14 drives the rotating column 19 and the tapered piston block 20 to move, so that the tapered piston block 20 moves in the tapered tube 15, thereby adjusting the gap between the side of the tapered piston block 20 and the inner wall of the tapered tube 15, and then adjusting the gas flow of the tapered tube 15 entering the flow regulating shell 3. Finally, the gas pressure in the flow regulating shell 3 at this time is detected by the intake pressure gauge 5, and the gas in the flow regulating shell 3 is discharged from the gas outlet joint 31.

[0044] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be included in the protection scope of the utility model.

Claims

1. A throttling two-stage pressure reducing valve, comprising a pressure reducing valve body (1) and a flow regulating shell (3), characterized in that: An adapter (2) is provided between the pressure reducing valve body (1) and the flow regulating shell (3); a flow control regulating mechanism (4) is provided on the flow regulating shell (3); an intake pressure gauge (5) is fixedly installed on the front of the flow regulating shell (3); a pressure regulating cover (6) is provided on the top of the pressure reducing valve body (1); a valve switch (7) is provided on the top of the pressure regulating cover (6); a support rod (8) is fixedly connected to the top surface of the pressure regulating cover (6); a support seat (9) is provided in the middle of the support rod (8); a torsion spring (10) is fixedly connected to the top and bottom surfaces of the support seat (9); the torsion spring (10) is sleeved on the outer side of the support rod (8), the top and bottom of the support rod (8) are rotatably connected with a rotating ring (11), the ends of the two torsion springs (10) are respectively connected to the two rotating rings (11), the ends of the two rotating rings (11) are respectively fixedly connected with a protective shell (12), the two protective shells (12) are sleeved on the outer side of the valve switch (7), the front parts of the two protective shells (12) are provided with a fixing mechanism (13), the inner cavities of the two protective shells (12) are both provided with a rubber block (21), and the side of the rubber block (21) is pressed against the outer side of the valve switch (7).

2. A throttling two-stage pressure reducing valve according to claim 1, characterized in that: The flow control adjustment mechanism (4) comprises an adjustment column (14) fixedly sleeved on one side of the flow adjustment shell (3) and a tapered tube (15) fixedly sleeved on the other side of the flow adjustment shell (3); the end of the adapter (2) is fixedly sleeved on one end of the inner cavity of the tapered tube (15); one end of the adjustment column (14) is provided with a movable groove (16); the other end of the adjustment column (14) is threadedly sleeved with a screw rod (17); one end of the screw rod (17) extends to the outside of the adjustment column (14) and is fixedly connected to a knob (18); the other end of the screw rod (17) extends to the inner cavity of the movable groove (16) and is fixedly connected to a rotating column (19); one end of the rotating column (19) extends to the other end of the inner cavity of the tapered tube (15) and is fixedly connected to a tapered piston block (20); the side surface of the tapered piston block (20) is in contact with the inner wall of the tapered tube (15).

3. A throttling two-stage pressure reducing valve according to claim 1, characterized in that: The fixing mechanism (13) comprises an L-shaped connecting seat (22) fixedly connected to the front of one protective shell (12) and a fixing seat (23) fixedly connected to the front of another protective shell (12); a plug hole (24) is provided on the top surface of the L-shaped connecting seat (22); a lifting groove (25) is provided on the bottom surface of the fixing seat (23); a spring (26) is fixedly connected to the top surface of the inner cavity of the lifting groove (25); a pressing plate (27) is fixedly connected to the bottom end of the spring (26); a plug pin (28) is fixedly connected to the bottom surface of the pressing plate (27); the bottom end of the plug pin (28) is movably sleeved to the inner cavity of the plug hole (24); a pull rod (29) is fixedly connected to the top surface of the pressing plate (27); the top end of the pull rod (29) is movably sleeved to the top of the fixing seat (23) and is fixedly connected to the pull plate (30).

4. The throttling two-stage pressure reducing valve according to claim 1, characterized in that: An air inlet connector (33) is provided on the side of the pressure reducing valve body (1), and a pressure display gauge (34) is provided on the front of the pressure reducing valve body (1).

5. The throttling two-stage pressure reducing valve according to claim 1, characterized in that: A flow detector (32) is arranged on the top of the flow regulating shell (3), and an air outlet connector (31) is arranged on the bottom of the flow regulating shell (3).

6. The throttling two-stage pressure reducing valve according to claim 3, characterized in that: The outer diameter of the latch pin (28) fits the inner wall of the insertion hole (24), and the outer side surface of the extrusion plate (27) fits the inner wall of the lifting groove (25).

7. The throttling two-stage pressure reducing valve according to claim 2, characterized in that: The inner wall of the movable groove (16) and the outer side surface of the rotating column (19) are in contact with each other.

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