Underwater automatic inflation and deflation valve body for floating-assisting air bag

Abstract

The utility model discloses an underwater automatic inflation and deflation valve body of a floating-assisting air bag, which relates to the technical field of floating-assisting air bags and comprises the floating-assisting air bag, one end of the floating-assisting air bag is fixedly connected with a valve body, an air inlet channel and an air outlet channel are arranged in the valve body, a cavity is arranged between the air inlet channel and the air outlet channel, and the air inlet channel is communicated with the air outlet channel. Through holes are fixedly connected between the air inlet channel and the cavity and between the air outlet channel and the cavity, check blocks are arranged in the two through holes in a sliding mode, the two check blocks are matched with the air inlet channel and the air outlet channel respectively, two pistons are arranged in the cavity in a sliding mode, and a connecting rod is fixedly connected between the two pistons. When the pressure in water is larger than the pressure in the floating-assisting air bag, the two pistons move leftwards, then the trapezoidal block on the upper portion can be made to move, then the check block on the upper portion can be driven to move downwards, the air inlet channel can be opened, and at the moment, the interior of the floating-assisting air bag can be inflated.

Description

Technical Field

[0001] The utility model relates to the technical field of buoyancy assisting air bags, in particular to an automatic air charging and discharging valve body for underwater use of a buoyancy assisting air bag. Background Technique

[0002] The main function of the buoyancy assisting air bag is to provide buoyancy to help heavy objects or large structures float or maintain stability in water. This buoyancy support plays an important role in many fields such as ocean engineering, ship rescue, and bridge construction.

[0003] Among them, a special buoyancy assisting air bag for culverts with the publication number of CN220366024U includes a bladder body. Air nozzles are arranged on both sides of the bladder body. A conical pressing sleeve is fixedly installed outside the air nozzle. A locking nut is threadedly connected to the outside of the conical pressing sleeve. A traction frame is fixedly installed outside the air nozzle. A plurality of first bolts are arranged outside the traction frame. One end of the air nozzle is fixedly connected to an air charging and discharging elbow pipe. A shackle is fixedly installed on one side of the traction frame.

[0004] However, the existing buoyancy assisting air bags are usually inflated on the shore and then put into the water. During the use process, due to the increasing water pressure underwater, it is necessary for the staff to charge and discharge the air bag in real time according to the pressure gauge connected to the air inlet pipe to ensure that the pressure of the air inside the air bag and the sea water always remains balanced. Content of the Utility Model

[0005] In view of the above problems existing in the existing buoyancy assisting air bags, the present utility model is proposed.

[0006] Therefore, the purpose of the present utility model is to provide an automatic air charging and discharging valve body for underwater use of a buoyancy assisting air bag, which solves the problem that the existing buoyancy assisting air bag requires the staff to charge and discharge the air bag in real time according to the pressure gauge connected to the air inlet pipe to ensure that the pressure of the air inside the air bag and the sea water always remains balanced.

[0007] In order to achieve the above purpose, the present utility model provides the following technical solutions:

[0008] An automatic air charging and discharging valve body for underwater use of a buoyancy assisting air bag includes a buoyancy assisting air bag. One end of the buoyancy assisting air bag is fixedly connected to a valve body. An air inlet channel and an air outlet channel are opened inside the valve body. A cavity is opened between the air inlet channel and the air outlet channel. Through holes are fixedly connected between the air inlet channel, the air outlet channel and the cavity. Blockers are slidably arranged inside the two through holes. The two blockers respectively match the air inlet channel and the air outlet channel. Two pistons are slidably arranged inside the cavity. A connecting rod is fixedly connected between the two pistons. Grooves are opened on the upper and lower surfaces of the two connecting rods. Adjusting mechanisms are arranged inside the two grooves. The two blockers respectively match the corresponding adjusting mechanisms.

[0009] Preferably, the adjusting mechanism includes two sliding rods, two trapezoidal blocks and two T-shaped blocks. The two sliding rods are respectively fixedly connected to the inside of the corresponding grooves. The two trapezoidal blocks are respectively slidably sleeved on the rod walls of the corresponding sliding rods. The two T-shaped blocks are respectively fixedly connected to the inclined surfaces of the corresponding trapezoidal blocks. One end of each of the two stoppers is provided with an inclined surface, and a T-shaped groove is formed in each of the two inclined surfaces. The two T-shaped blocks are respectively slidably disposed inside the corresponding T-shaped grooves.

[0010] Preferably, springs are slidably sleeved on the rod walls of the two sliding rods, and the two springs respectively match the corresponding trapezoidal blocks.

[0011] Preferably, one end of the air inlet passage is fixedly connected to an air inlet pipe.

[0012] Preferably, one end of the air outlet passage is fixedly connected to a check valve.

[0013] Preferably, pressure relief holes are formed on both sides of the cavity.

[0014] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0015] 1. In the present utility model, when the pressure in the water is greater than the pressure inside the buoyancy assisting airbag, the two pistons move to the left. Subsequently, the upper trapezoidal block can be moved, and then the upper stopper can be driven to move downward, so that the air inlet passage can be opened. At this time, air can be filled into the buoyancy assisting airbag.

[0016] 2. In the present utility model, when the pressure in the water is greater than the pressure inside the buoyancy assisting airbag, the two pistons move to the left. Subsequently, the upper trapezoidal block can be moved, and then the upper stopper can be driven to move downward, so that the air inlet passage can be opened. At this time, air can be filled into the buoyancy assisting airbag. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is the Figure 1 cross-sectional view of the present utility model;

[0020] Figure 3 is the Figure 2 enlarged schematic view of part A of the present utility model;

[0021] Figure 4 For the present utility model Figure 2 Schematic diagram of the connection structure between the middle stop block and the trapezoidal block

[0022] Explanation of reference numerals

[0023] 1. Buoyancy assisting airbag; 2. Valve body; 3. Stop block; 4. Piston; 5. Connecting rod; 6. Slide bar; 7. Trapezoidal block; 8. T-shaped block; 9. Spring; 10. Air inlet pipe; 11. Check valve Specific implementation manners

[0024] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further introduced in detail below with reference to the accompanying drawings

[0025] An embodiment of the present utility model discloses an automatic inflation and deflation valve body for an underwater buoyancy assisting airbag

[0026] Embodiment 1

[0027] Referring to Figures 1-4 , an automatic inflation and deflation valve body for an underwater buoyancy assisting airbag includes a buoyancy assisting airbag 1. It is characterized in that one end of the buoyancy assisting airbag 1 is fixedly connected with a valve body 2. An air inlet passage and an air outlet passage are provided inside the valve body 2. A cavity is provided between the air inlet passage and the air outlet passage. Through holes are fixedly connected between the air inlet passage, the air outlet passage and the cavity. Two stop blocks 3 are slidably arranged inside the two through holes. The two stop blocks 3 respectively match the air inlet passage and the air outlet passage. Two pistons 4 are slidably arranged inside the cavity. A connecting rod 5 is fixedly connected between the two pistons 4. Grooves are provided on the upper and lower surfaces of the two connecting rods 5. Adjusting mechanisms are arranged inside the two grooves. The two stop blocks 3 respectively match the corresponding adjusting mechanisms

[0028] Referring to Figures 1-4 , the adjusting mechanism includes two slide bars 6, two trapezoidal blocks 7 and two T-shaped blocks 8. The two slide bars 6 are respectively fixedly connected inside the corresponding grooves. The two trapezoidal blocks 7 are respectively slidably sleeved on the rod walls of the corresponding slide bars 6. The two T-shaped blocks 8 are respectively fixedly connected to the inclined surfaces of the corresponding trapezoidal blocks 7. One ends of the two stop blocks 3 are provided with inclined surfaces. T-shaped grooves are provided on the two inclined surfaces. The two T-shaped blocks 8 are respectively slidably arranged inside the corresponding T-shaped grooves. Pressure relief holes are provided on both sides of the cavity

[0029] When the pressure in the water is greater than the pressure inside the flotation airbag 1, the two pistons 4 move to the left, and then the upper trapezoidal block 7 can be moved, and then the upper block 3 can be driven to move downward, so that the air inlet channel can be opened, and at this time, the interior of the flotation airbag 1 can be inflated. When the pressure in the water is less than the pressure inside the flotation airbag 1, the two pistons 4 move to the right, and then the lower trapezoidal block 7 can be moved, and then the lower block 3 can be driven to move upward, so that the air outlet channel can be opened, and at this time, the interior of the flotation airbag 1 can be inflated. At this time, whether it is deflation or intake, when the pressure in the water is greater than the pressure inside the flotation airbag 1, the two pistons 4 are in a symmetrical state, and the two blocks 3 can block the air inlet channel and the air outlet channel respectively.

[0030] Embodiment 2

[0031] Based on Example 1, refer to Figures 2-3 The rod walls of the two sliding rods 6 are slidably sleeved with springs 9, and the two springs 9 are matched with the corresponding trapezoidal blocks 7 respectively.

[0032] The two springs 9 can be used to make one of the trapezoidal blocks 7 move and support the other trapezoidal block 7 through elastic force.

[0033] Embodiment 3

[0034] Based on Example 1, refer to Figures 1-2 One end of the air intake passage is fixedly connected with an air intake pipe 10.

[0035] The air inlet pipe 10 can be connected to an external gas tank.

[0036] Embodiment 4

[0037] Based on Example 1, refer to Figures 1-2 A one-way valve 11 is fixedly connected to one end of the air outlet channel.

[0038] The one-way valve 11 can be used to prevent river water from entering the air outlet channel.

[0039] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automatic inflation and deflation valve body for underwater use of a buoyancy-aiding airbag, comprising a buoyancy-aiding airbag (1), characterized in that: One end of the floating airbag (1) is fixedly connected to a valve body (2), an air inlet channel and an air outlet channel are provided inside the valve body (2), a cavity is provided between the air inlet channel and the air outlet channel, through holes are fixedly connected between the air inlet channel, the air outlet channel and the cavity, blocks (3) are slidably provided inside the two through holes, the two blocks (3) respectively match the air inlet channel and the air outlet channel, two pistons (4) are slidably provided inside the cavity, a connecting rod (5) is fixedly connected between the two pistons (4), grooves are provided on the upper and lower surfaces of the two connecting rods (5), adjustment mechanisms are provided inside the two grooves, and the two blocks (3) respectively match the corresponding adjustment mechanisms.

2. The automatic inflation and deflation valve body for underwater buoyancy-aiding airbag according to claim 1 is characterized in that: The adjustment mechanism comprises two slide bars (6), two trapezoidal blocks (7) and two T-shaped blocks (8); the two slide bars (6) are respectively fixedly connected to the inside of the corresponding grooves; the two trapezoidal blocks (7) are respectively slidably sleeved on the rod walls of the corresponding slide bars (6); the two T-shaped blocks (8) are respectively fixedly connected to the inclined surfaces of the corresponding trapezoidal blocks (7); one end of the two stoppers (3) is provided with an inclined surface; the two inclined surfaces are provided with T-shaped grooves; and the two T-shaped blocks (8) are respectively slidably arranged inside the corresponding T-shaped blocks (8).

3. The automatic inflation and deflation valve body for underwater buoyancy-aiding airbag according to claim 2 is characterized in that: The rod walls of the two sliding rods (6) are both slidably sleeved with springs (9), and the two springs (9) are matched with corresponding trapezoidal blocks (7) respectively.

4. The automatic inflation and deflation valve body for underwater buoyancy-aiding airbag according to claim 1 is characterized in that: One end of the air intake passage is fixedly connected to an air intake pipe (10).

5. The automatic inflation and deflation valve body for underwater buoyancy-aiding airbag according to claim 1, characterized in that: One end of the air outlet channel is fixedly connected to a one-way valve (11).

6. The automatic inflation and deflation valve body for underwater buoyancy-aiding airbag according to claim 1, characterized in that: Pressure relief holes are provided on both sides of the cavity.

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