Pressure reducing valve device with waterproof function

Abstract

The utility model relates to a pressure reducing valve device with a waterproof function, which comprises a valve body, an oxygen bottle connector is arranged at the opening end of the valve body, a connecting part is arranged between the oxygen bottle connector and the valve body, and the valve body and the oxygen bottle connector are fixedly connected through the connecting part. When the pressure of oxygen in an external oxygen bottle is reduced, the pressure in the oxygen bottle connector is reduced, at the moment, the spring pushes the valve element to move towards the oxygen bottle connector, the bottom end of the air hole is driven to move synchronously, and when the bottom end of the air hole moves to be communicated with the alarm pipeline, the water-proof sealing structure is closed. Therefore, gas can be discharged into the alarm pipeline through the air hole, penetrates through the one-way valve and then is discharged from the bottom end of the alarm pipeline, bubbles are formed underwater, a user is reminded of insufficient oxygen pressure, and the problem that the underwater welding quality can be seriously affected due to the fact that the oxygen pressure is insufficient and a welding rod cannot be fully combusted is avoided as much as possible.

Description

Technical Field

[0001] The utility model belongs to the technical field of pressure reducing valves, and in particular relates to a pressure reducing valve device with a waterproof function. Background Art

[0002] A pressure reducing valve is a valve that reduces the inlet pressure to a desired outlet pressure through regulation and automatically maintains a stable outlet pressure by relying on the energy of the medium itself. From the perspective of fluid mechanics, a pressure reducing valve is a throttling element with variable local resistance. That is, by changing the throttling area, the flow rate and kinetic energy of the fluid are changed, resulting in different pressure losses, thereby achieving the purpose of pressure reduction.

[0003] In the field of underwater welding, a pressure reducing valve needs to be installed between the oxygen cylinder and the welding gun. The existing pressure reducing valve cannot promptly alarm when the oxygen pressure is insufficient. If the user fails to detect the insufficient oxygen pressure in time, the welding rod cannot fully burn due to the reduced oxygen content, which may seriously affect the quality of underwater welding. Utility Model Content

[0004] The purpose of the present invention is to provide a pressure reducing valve device with a simple structure and reasonable design and a waterproof function in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] 18. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said linking rod is pivotally connected to said linking rod. said linking rod has a round shank to contact with said linking rod.

[0007] As a further optimization solution of the present invention, the waterproof sealing structure includes a sealing cover that is sleeved on the circumference of the oxygen cylinder connector, a cavity is left between the inner wall of the sealing cover and the outer surface of the oxygen cylinder connector, and a sealing ring is installed in the cavity.

[0008] As a further optimization scheme of the utility model, the gas pipe joint is fixedly installed with a pressure gauge, and a detection end of the pressure gauge penetrates a side wall of the gas pipe joint and communicates with an inner cavity of the gas pipe joint.

[0009] As a further optimization scheme of the utility model, the adjusting device comprises two guide rods fixedly connected in the inner cavity of the valve body, a first sliding plate is sleeved with one end of the guide rod close to the valve core, one end of the valve core in the valve body is fixed with the first sliding plate, a second sliding plate is sleeved with one end of the guide rod away from the valve core, the first sliding plate and the second sliding plate can slide along the length direction of the guide rod, a spring is further sleeved with the guide rod between the first sliding plate and the second sliding plate, and two ends of the spring are fixedly connected with the first sliding plate and the second sliding plate respectively.

[0010] As a further optimization scheme of the utility model, an adjusting screw is rotatably connected with the valve body and penetrates the second sliding plate and is screw-connected with the second sliding plate.

[0011] As a further optimization scheme of the utility model, a whistle is further fixedly connected with the bottom end of the one-way valve.

[0012] The utility model discloses beneficial effects lie in: when the oxygen pressure in the external oxygen cylinder, the pressure in the oxygen cylinder joint reduces, the spring pushes the valve core to move to the oxygen cylinder joint direction, drives the air hole bottom end synchronous movement, when the air hole bottom end moves to the alarm pipeline intercommunication, gas can be discharged into the alarm pipeline through the air hole, and after passing the one-way valve, is discharged from the alarm pipeline bottom end, forms the air bubble under the water, reminds the user oxygen pressure shortage, avoids the problem that the welding rod can not be fully burnt due to the oxygen pressure shortage as far as possible, can seriously influence the quality of underwater welding. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is one side structure schematic diagram of the utility model whole;

[0014] Figure 2 It is another side structure schematic diagram of the utility model whole;

[0015] Figure 3 It is the section structure schematic diagram of the utility model whole;

[0016] Figure 4 It is the utility model Figure 3 A local detail schematic diagram.

[0017] In the figure: 1. Valve body; 2. Oxygen cylinder connector; 3. Connecting part; 4. Sealing cover; 5. Sealing ring; 6. Gas pipe connector; 7. Pressure gauge; 8. Valve core; 9. First slide; 10. Guide rod; 11. Second slide; 12. Spring; 13. Adjusting screw; 14. Alarm pipe; 15. One-way valve; 16. Whistle; 17. Air hole. DETAILED DESCRIPTION

[0018] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0019] Example 1

[0020] like Figure 1 - Figure 4 As shown, a pressure reducing valve device with a waterproof function includes a valve body 1, an oxygen cylinder connector 2 for connecting an external oxygen cylinder is provided at the open end of the valve body 1, a connecting portion 3 is provided between the oxygen cylinder connector 2 and the valve body 1, the valve body 1 and the oxygen cylinder connector 2 are fixedly connected via the connecting portion 3, and a waterproof sealing structure is provided on the circumference of one end of the oxygen cylinder connector 2 away from the connecting portion 3, the waterproof sealing structure includes a sealing cover 4 sleeved on the circumference of the oxygen cylinder connector 2, a cavity is left between the inner wall of the sealing cover 4 and the outer surface of the oxygen cylinder connector 2, and a sealing ring 5 is installed in the cavity. When the oxygen cylinder is connected to the oxygen cylinder connector 2, the sealing cover 4 can be covered on the exhaust end of the oxygen cylinder and cooperate with the sealing ring 5 to perform sealing, thereby greatly improving the sealing and waterproof performance;

[0021] A gas pipe connector 6 is installed on the top wall of one end of the oxygen cylinder connector 2 near the connecting portion 3. The bottom end of the gas pipe connector 6 is connected to the oxygen cylinder connector 2. A pressure gauge 7 is fixedly installed on the gas pipe connector 6. The detection end of the pressure gauge 7 passes through the side wall of the gas pipe connector 6 and is connected to the inner cavity of the gas pipe connector 6. It is used to detect the pressure of oxygen discharged through the gas pipe connector 6 during operation.

[0022] A valve core 8 is slidably connected in the connecting part 3, one end of the valve core 8 extends to the bottom of the gas pipe connector 6, and the other end of the valve core 8 extends in the opposite direction into the valve body 1. An adjusting device for adjusting the position of the valve core 8 is provided in the valve body 1. The adjusting device includes two guide rods 10 fixedly connected in the inner cavity of the valve body 1, and the end of the guide rod 10 close to the valve core 8 is sleeved with a first slide 9. The end of the valve core 8 located in the valve body 1 is fixed to the first slide 9, and the end of the guide rod 10 away from the valve core 8 is sleeved with a second slide 11. The first slide 9 and the second slide 11 can both slide along the length direction of the guide rod 10. A spring 12 is also sleeved on the guide rod 10 between the first slide 9 and the second slide 11. The two ends of the spring 12 are respectively fixedly connected to the first slide 9 and the second slide 11. When oxygen enters the oxygen cylinder connector 2, the valve core 8 can be pushed to slide toward the inside of the valve body 1 under the action of gas pressure, thereby pushing the first slide 9 to move along the guide rod 10 to squeeze the spring 12 to contract. At this time, the valve core 8 is opened, allowing gas to enter the gas pipe connector 6 at a constant pressure for gas supply;

[0023] An adjusting screw 13 is provided at one end of the valve body 1 away from the connecting portion 3 and is rotatably connected to the valve body 1. One end of the adjusting screw 13 located inside the valve body 1 passes through the center of the second slide 11 and is screwed to the second slide 11. The adjusting screw 13 is provided to limit the second slide 11. During use, the user can screw the adjusting screw 13 and use the thread to push the second slide 11 to move and adjust the position of the second slide 11, thereby adjusting the elastic force of the spring 12 on the valve core 8, so that the user can adjust the gas flow rate inside the overall pressure reducing valve according to needs.

[0024] An alarm pipe 14 is fixedly connected to the lower surface of the connecting part 3. The top of the alarm pipe 14 passes through the side wall of the connecting part 3 and fits into the outer surface of the valve core 8. A one-way valve 15 is installed at the connection between the alarm pipe 14 and the connecting part 3. An air hole 17 with an L-shaped structure is opened in the center of the valve core 8, and the bottom end of the vertical section of the air hole 17 is arranged in alignment with the alarm pipe 14.

[0025] It should be noted that, when using this pressure reducing valve device with a waterproof function, the one-way valve 15 is closed, and the oxygen cylinder connector 2 is connected to the external oxygen cylinder, so that the gas in the oxygen cylinder can enter the oxygen cylinder connector 2. As the internal pressure of the oxygen cylinder connector 2 increases, the air pressure pushes the valve core 8 to slide toward the valve body 1, and squeezes the spring 12 to contract, until a certain size of channel is opened at the bottom end of the gas pipe connector 6. At this time, the air hole 17 opened on the valve core 8 is misaligned with the alarm pipe 14, and the inner wall of the connecting part 3 can seal the bottom end of the air hole 17, so that the pressure on both sides of the valve core 8 is balanced, and oxygen can be discharged along the gas pipe connector 6 at a constant pressure. The user can then open the one-way valve 15, and when the external oxygen cylinder When the oxygen pressure inside drops to a certain value and cannot meet the requirements of the welding gun for underwater welding, the pressure in the oxygen cylinder connector 2 drops and the pressure balance is broken. At this time, the spring 12 pushes the valve core 8 in the opposite direction to move toward the oxygen cylinder connector 2, driving the bottom end of the air hole 17 to move synchronously. When the bottom end of the air hole 17 moves to connect with the alarm pipe 14, the gas can be discharged into the alarm pipe 14 through the air hole 17, and is discharged from the bottom end of the alarm pipe 14 after passing through the one-way valve 15, forming bubbles underwater, reminding the user that the oxygen pressure is insufficient and the oxygen cylinder needs to be replaced in time to avoid insufficient oxygen pressure. The welding rod cannot fully burn due to the reduced oxygen content, which may seriously affect the quality of underwater welding.

[0026] Example 2

[0027] Further improvements were made based on Example 1, such as Figure 2 As shown: a whistle 16 is also fixedly connected to the bottom end of the one-way valve 15.

[0028] When the user is performing welding work on land and the oxygen pressure is insufficient, the air hole 17 discharges into the alarm pipe 14 and continues to enter the whistle 16. The air flow drives the reed in the whistle 16 to vibrate and produce a whistle sound, which promptly reminds the user to replace the oxygen cylinder, greatly improving the versatility of the overall device.

[0029] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. A pressure reducing valve device with a waterproof function, comprising a valve body (1), an oxygen cylinder connector (2) provided at an open end of the valve body (1), a connecting portion (3) provided between the oxygen cylinder connector (2) and the valve body (1), the valve body (1) and the oxygen cylinder connector (2) being fixedly connected via the connecting portion (3), a waterproof sealing structure provided around one end of the oxygen cylinder connector (2) away from the connecting portion (3), and characterized in that: A gas supply pipe joint (6) is installed on the top wall of one end of the oxygen cylinder joint (2) near the connecting part (3), and the bottom end of the gas supply pipe joint (6) is connected to the oxygen cylinder joint (2). A valve core (8) is slidably connected in the connecting part (3), one end of the valve core (8) extends below the gas supply pipe joint (6), and the other end of the valve core (8) extends in the opposite direction into the valve body (1). An adjusting device for adjusting the position of the valve core (8) is provided in the valve body (1). An alarm pipe (14) is fixedly connected to the lower surface of the connecting part (3), the top end of the alarm pipe (14) passes through the side wall of the connecting part (3) and fits with the outer surface of the valve core (8). A one-way valve (15) is installed at the connection between the alarm pipe (14) and the connecting part (3). An air hole (17) with an L-shaped structure is opened in the center of the valve core (8), and the bottom end of the vertical section of the air hole (17) is arranged in alignment with the alarm pipe (14).

2. The pressure reducing valve device with waterproof function according to claim 1, characterized in that: The waterproof sealing structure comprises a sealing cover (4) sleeved on the circumference of the oxygen cylinder connector (2), a cavity is left between the inner wall of the sealing cover (4) and the outer surface of the oxygen cylinder connector (2), and a sealing ring (5) is installed in the cavity.

3. The pressure reducing valve device with waterproof function according to claim 1, characterized in that: A pressure gauge (7) is fixedly mounted on the gas pipe joint (6), and a detection end of the pressure gauge (7) passes through the side wall of the gas pipe joint (6) and is in communication with the inner cavity of the gas pipe joint (6).

4. The pressure reducing valve device with waterproof function according to claim 1, characterized in that: The regulating device comprises two guide rods (10) fixedly connected in the inner cavity of the valve body (1), wherein the end of the guide rod (10) close to the valve core (8) is provided with a first slide plate (9), and the end of the valve core (8) located in the valve body (1) is fixed to the first slide plate (9), and the end of the guide rod (10) away from the valve core (8) is provided with a second slide plate (11), and both the first slide plate (9) and the second slide plate (11) can slide along the length direction of the guide rod (10), and a spring (12) is also provided on the guide rod (10) between the first slide plate (9) and the second slide plate (11), and the two ends of the spring (12) are respectively fixedly connected to the first slide plate (9) and the second slide plate (11).

5. The pressure reducing valve device with waterproof function according to claim 4, characterized in that: An adjusting screw (13) rotatably connected to the valve body (1) is provided on one end of the valve body (1) away from the connecting portion (3); one end of the adjusting screw (13) located inside the valve body (1) passes through the center of the second slide plate (11) and is screwed to the second slide plate (11).

6. The pressure reducing valve device with waterproof function according to claim 1, characterized in that: A whistle (16) is also fixedly connected to the bottom end of the one-way valve (15).

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