Anti-obturation breathing device and fire fighting truck

Abstract

The utility model discloses an anti-obturation breathing device and a fire fighting truck in the field of breathing devices, and aims to solve the problem that in the prior art, breathing valves are affected in use due to different starting pressure differences caused by individual differences of the breathing valves, the anti-obturation breathing device comprises a breathing tube, a breathing cap and a filling ball, and dense holes are formed in the side wall and the bottom of the lower portion of the breathing tube. The filling balls are arranged in the breathing tube, the filling height of the filling balls is larger than the distribution height of the dense holes, gaps are formed between the filling balls, and labyrinth holes allowing gas to pass through are formed in the gaps between the filling balls. The filling balls are arranged in the breathing tube, the gaps are formed between the filling balls, the gaps between the filling balls form the labyrinth holes, the labyrinth holes are used for allowing gas to pass through to balance the internal and external pressure difference of the device, the gas can enter and exit without starting pressure, and the situation that use is affected due to the fact that starting pressure differences between breathing devices are different is avoided.

Description

Technical Field

[0001] The present application relates to the field of breathing devices, and in particular to an anti-breathing breathing device and a fire truck. Background Art

[0002] The fire truck tank body needs to be designed into a concave structure to adapt to the installation of top equipment. The concave part is generally located in the middle position. The liquid levels on both sides of the tank body are higher than the middle liquid level. A breathing valve is installed on the convex part of the tank body. The breathing valve balances the pressure difference between the inside and outside of the tank body to achieve liquid injection and liquid suction. Generally, the breathing valve requires a certain pressure difference to push the spring inside the breathing valve to start, but there are individual differences in the breathing valves. The starting pressure of the spring in each breathing valve is not exactly the same. Two breathing valves with different starting pressure differences are installed on the convex part of the concave tank body. When filling, one side will be easier to open the breathing valve to balance the gas due to the smaller starting pressure difference. The internal pressure of the tank is high, the liquid level is high, the starting pressure difference on the other side is large and it has not yet opened or is opened to a small extent, and the liquid level is lower than the other side. The level gauge display is used to judge whether the tank is filled. When the level gauge shows 100%, due to the difference in the starting pressure difference of the breathing valves on both sides, the liquid level on one side is lower than the liquid level on the other side. The space on the opposite side of the level gauge is not filled, and the tank volume is not fully utilized. When the liquid display has not reached 100%, the liquid may have overflowed on the opposite side of the level gauge, and the injection needs to be stopped. The use of general breathing valves has the problem of different starting pressure differences due to individual differences in the breathing valves, which is affected during use. Utility Model Content

[0003] The purpose of the present application is to provide an anti-breathing breathing device and a fire truck, wherein gas passes through the gaps formed by the filling balls arranged in the breathing tube, and the internal and external pressure difference of the device can be adjusted without starting the pressure difference.

[0004] In order to solve the above technical problems, the following technical solutions are adopted:

[0005] In the first aspect, the present application provides an anti-breathing breathing device, comprising a breathing tube, a breathing cap and a filling ball, wherein the side walls and the bottom of the lower part of the breathing tube are provided with dense holes, the filling ball is placed in the breathing tube, the filling height of the filling ball is higher than the distribution height of the dense holes, and there are gaps between the filling balls, and the gaps between the filling balls form a labyrinth pore for the passage of gas.

[0006] Optionally, a breathing cap is further included, which includes an outer wall plate, an inner wall plate and a bottom plate. The upper part of the breathing cap is closed, and a tube hole is provided in the center of the bottom. The tube hole is cooperatively connected with the end of the breathing tube. A bottom plate is provided on the outer circle of the bottom tube hole. The bottom plate is placed between the outer wall and the inner wall. The height of the inner wall is lower than the height of the outer wall. A chamber is formed between the inner wall plate, the bottom plate, the outer wall plate and the outer wall of the breathing tube.

[0007] Optionally, air holes are provided on the bottom plate, and the air holes are used to balance the internal and external pressure differences through gas.

[0008] Optionally, a flange is provided on the outside of the breathing tube, a mounting hole is provided on the flange, and the breathing tube is placed in the mounting hole.

[0009] Optionally, the height of the flange located on the breathing tube is higher than the dense hole distribution height, and the flange is used to detachably connect the breathing tube to the tank body for use.

[0010] Optionally, the end of the breathing tube with dense holes is placed in the tank body, and the entire portion of the breathing tube with dense holes is placed in the tank body.

[0011] Optionally, the filling balls include any one of glass balls, stainless steel balls, stones or rubber particles.

[0012] In a second aspect, the present application provides a fire truck, comprising a tank body, on which is mounted any one of the anti-breathing breathing devices provided in the first aspect.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The utility model arranges filling balls in the breathing tube with gaps between the filling balls. The gaps between the filling balls form a maze of pores for passing gas to balance the internal and external pressure difference of the device. Gas can enter and exit without starting pressure, avoiding the influence of different starting pressure differences between breathing devices on use.

[0015] 2. The utility model has a simple structure and low cost. The breathing tube and the breathing cap can be quickly disassembled and can be detachably mounted on the tank body through a flange. The internal filling ball can be selected according to the use of the breathing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a half-section structure of the anti-breathing breathing device in Example 1 of the present application;

[0017] Figure 2 This is a schematic diagram of a half-section structure of the anti-breathing breathing device in Example 1 of the present application;

[0018] Figure 3 This is a schematic diagram of the structure of the breathing cap in Example 1 of the present application;

[0019] Figure 4 This is a schematic diagram of the breathing tube structure in Example 1 of the present application;

[0020] Figure 5 This is a schematic diagram of the flange structure in Example 1 of the present application;

[0021] Figure 6This is a schematic diagram of the breathing valve used on a square tank in Example 2 of the present application;

[0022] Figure 7 This is a schematic diagram of the breathing valve used on a concave structure tank in Example 2 of the present application;

[0023] Figure 8 This is a schematic diagram of the anti-air-trap device provided in Example 1 of Example 2 of the present application being used on a concave-structured tank body.

[0024] Description of reference numerals:

[0025] 1. Tank body; 2. Injection / suction tube; 3. Liquid level gauge; 4. Breathing valve; 5. Breathing device; 6. Breathing tube; 7. Breathing cap; 8. Filling ball; 9. Closed hole; 10. Air hole; 11. Pipe hole; 12. Cavity; 13. Flange; 14. Mounting hole. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only some embodiments of the present application, rather than all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present application, its application, or use. Example 1

[0027] like Figure 1-Figure 5 As shown, the present embodiment provides an anti-breathing breathing device 5, comprising a breathing tube 6, a breathing cap 7 and a filling ball 8. The side wall and the bottom of the lower part of the breathing tube 6 are provided with dense holes 9. The filling ball 8 is placed in the breathing tube 6. The filling height of the filling ball 8 is higher than the distribution height of the dense holes 9. There are gaps between the filling balls 8, and the gaps between the filling balls 8 form a labyrinth pore for the passage of gas.

[0028] After the filling balls 8 are placed in the breathing tube 6 , gaps are formed between the filling balls 8 , and gas enters the breathing tube 6 from the bottom of the breathing tube 6 and then exits the breathing tube 6 through the gaps.

[0029] The breathing cap 7 includes an outer wall, an inner wall and a bottom plate. The top of the breathing cap 7 is closed, and a tube hole 11 is provided at the center of the bottom. The tube hole 11 is connected to the breathing tube 6. The outer wall of the breathing tube 6 is close to the inner wall of the breathing cap 7. A bottom plate is provided between the inner wall and the outer wall of the breathing cap, and an air hole 10 is provided on the bottom plate. The outer wall plate, bottom plate, inner wall plate and outer wall of the breathing tube of the breathing cap 7 form a cavity 12. After the gas is discharged from the breathing tube 6, it enters the cavity 12 and then flows out from the air hole 10 on the bottom plate. Similarly, after the external gas enters the cavity 12 from the air hole 10 of the bottom plate, it enters the breathing tube 6, passes through the gap between the filling balls 8, and is discharged from the dense holes 9 on the side wall and bottom of the breathing tube 6 to balance the air pressure in the device.

[0030] The breathing tube 6 is mounted on the tank body via an external flange 13. The breathing tube 6 is placed in a mounting hole 14 at the center of the flange 13. The highest hole 9 on the breathing tube 6 does not exceed the mounting position of the flange 13. The end of the breathing tube 6 with the hole 9 is completely placed in the tank body 1. The height of the flange 13 on the breathing tube is lower than the filling height of the filling ball 8.

[0031] The filling balls 8 can be made of spherical objects with a density greater than that of water, such as glass balls, stainless steel balls, stones or rubber particles. Example 2

[0032] This embodiment provides a fire truck based on the embodiment 1, including a tank body 1, on which the anti-air-holding breathing device 5 provided in the embodiment 1 is installed.

[0033] like Figure 6 As shown, the tank body 1 used in the fire truck is a square tank structure with a flat top, on which a breathing valve 4 and a liquid level gauge 3 are arranged. When filling the liquid, a pressure difference appears inside and outside, pushing the spring of the breathing valve 4. When the liquid level is displayed at 100%, it is full. When absorbing liquid, the spring of the breathing valve 4 is pushed in the opposite direction to allow external air to enter, balancing the pressure difference between the inside and outside. When the liquid level is displayed at 0%, it is emptied. The overall operation is safe and reliable. However, when this structure is used in high-rise fire trucks, the height of the tank body is limited due to the influence of the boom height, and the volume design is limited, making it unsuitable for extreme capacity expansion conditions.

[0034] like Figure 7As shown, the tank 1 used in the fire truck is partially concave, equipped with a filling / sucking pipe 2, a liquid level gauge 3, and a breathing valve 4. This arrangement is typically used in high-rise fire trucks, where the top boom and accessories such as the cylinder cannot be avoided, but where high capacity parameters are required. However, this arrangement creates dead zones where air is trapped at the raised areas on the left and right of the concave portion. The breathing valve 4 is used in both raised areas. Because the breathing valve 4 has an internal spring structure, it requires a certain initial starting pressure, and the pressure differential during actual activation cannot be guaranteed to be exactly the same for each individual tank. When sucking liquid, the overall operation is relatively reliable. However, during filling, the breathing valve spring pushes to release air. As filling continues, two situations may occur: 1. When the liquid level reaches 100%, it only indicates that the liquid level on the same side of the level gauge has reached the top surface. Due to the difference in starting pressure, the liquid level on the opposite side of the level gauge may still have a considerable amount of air trapped in the raised area of ​​the top plate, thus underutilizing the capacity. ② When the liquid level display has not reached 100%, that is, when the gas on the same side of the liquid level gauge has not been completely discharged, the breathing valve on the opposite side may have overflowed with liquid and stopped filling. In both cases, the volume is not fully utilized.

[0035] like Figure 8 As shown, the tank body 1 used in the fire truck is a partially concave tank body, on which a filling / sucking pipe 2 and a liquid level gauge 3 are provided, and breathing devices 5 are respectively provided on the convex parts on both sides of the tank body 1.

[0036] One end of the breathing tube 6 having the dense hole 9 is arranged in the tank body 1 and is detachably fixed to the top of the tank body 1 through the flange 13. When the tank body 1 is filled with liquid, the internal gas enters the breathing tube 6 from the dense holes 9 on the bottom and side walls of the breathing tube 6, and then is discharged from the breathing tube 6 into the cavity 12 through the gap between the filling balls 8. The gas in the cavity 12 is then discharged from the air holes 10 on the bottom plate to balance the internal air pressure of the tank body 1 and complete the liquid filling.

[0037] The breathing device 5 can discharge gas without an initial starting pressure difference, and breathing devices located at different positions can discharge gas without distinction.

[0038] When pumping liquid, the external air enters the breathing tube 6 from the air hole 10, and then reaches the tank body 1 through the dense hole 9, balancing the internal and external air pressure to complete the pumping.

[0039] The highest hole 9 on the breathing tube 1 is close to the inner wall of the upper shell of the tank body. During the filling process of the tank body 1, the hole 9 on the breathing tube 6 is always uncovered by the liquid, ensuring that the gas in the tank body 1 can be continuously discharged during the filling process. The highest hole 9 on the breathing tube 6 does not exceed the installation position of the flange, ensuring that the liquid will not overflow from the hole 9.

[0040] By using the anti-air-holding breathing device 5 provided in Example 1, the gas inside and outside the tank body 1 can be circulated without the need for an initial starting pressure difference. When the tank body 1 is stationary, since the air holes 10 are located on the bottom plate of the breathing cap 7 and there is a maze effect between the internal filling balls 8, external gas will not continue to enter the tank body 1 without hindrance, thereby isolating the air and preventing the fire-fighting liquid in the tank body 1 from being oxidized, deteriorated, volatilized, crystallized, and ineffective.

[0041] When the fire truck is moving, when the moving liquid acts on the lower part of the breathing tube 6, the dense pores 9 absorb most of the energy of the liquid. The remaining energy of the liquid is completely absorbed after passing through the pores of the ball maze and finally flows back into the tank body 1.

[0042] Since the breathing tube 6 has a certain height, when the fire truck rollover test is performed, the breathing tube 6 is in an inclined state, and the liquid in the tank body 1 will not overflow.

[0043] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An anti-breathing breathing device, characterized in that: The breathing tube comprises a breathing tube and a filling ball. The side wall and the bottom of the lower part of the breathing tube are provided with dense holes. The filling ball is placed in the breathing tube. The filling height of the filling ball is higher than the distribution height of the dense holes. There are gaps between the filling balls. The gaps between the filling balls form a labyrinth of pores for the passage of gas. It also includes a breathing cap, which includes an outer wall plate, an inner wall plate and a bottom plate. The upper part of the breathing cap is closed, and a tube hole is provided in the center of the bottom. The tube hole is matched with the end of the breathing tube. A bottom plate is provided on the outer circle of the bottom tube hole. The bottom plate is placed between the outer wall and the inner wall. The height of the inner wall is lower than the height of the outer wall. A chamber is formed between the inner wall plate, the bottom plate, the outer wall plate and the outer wall of the breathing tube.

2. The anti-breathing breathing device according to claim 1, characterized in that: The bottom plate is provided with air holes, and the air holes are used to balance the internal and external pressure differences through gas.

3. The anti-breathing breathing device according to claim 1, characterized in that: A flange is provided on the outside of the breathing tube, a mounting hole is provided on the flange, and the breathing tube is placed in the mounting hole.

4. The anti-breathing breathing device according to claim 3, characterized in that: The height of the flange located on the breathing tube is higher than the dense hole distribution height, and the flange is used to detachably connect the breathing tube to the tank body for use.

5. The anti-breathing breathing device according to claim 1, characterized in that: The end of the breathing tube with dense holes is placed in the tank body, and the part of the breathing tube with dense holes is entirely placed in the tank body.

6. The anti-breathing breathing device according to claim 1, characterized in that: The filling balls include any one of glass balls, stainless steel balls, stones or rubber particles.

7. A fire truck, comprising a tank, characterized in that: The tank body is equipped with the anti-breathing breathing device according to any one of claims 1 to 6.

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