Water collecting pit with rotational flow preventing function

Abstract

The utility model discloses a sump with a rotational flow prevention function, which is positioned at the bottom of a fire water tank and comprises a water tank molded block, a carbon steel plate, a rotational flow prevention blade and a water tank water outlet pipe, a square hole is formed in the water tank mold pressing block, carbon steel plates are fixed to the four edges and the bottom of the square hole, and therefore the water tank mold pressing block and the five carbon steel plates form a structure shaped like a Chinese character'ao '. According to the water tank, turbulent flow can be reduced, a liquid medium can evenly pass through the water tank water outlet pipe, and the water tank has the rotational flow preventing function, and the rotational flow preventing blade is arranged on the inner side of the carbon steel plate and located on the periphery of the pipe end of the water tank water outlet pipe.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of fire water tank, and relates to a water collecting pit, in particular to a water collecting pit with a cyclone prevention function. BACKGROUND

[0002] Fire water supply is the basis of the whole fire fighting system and is also the most important. It has been proved that sufficient fire water source and effective hardware guarantee measures must be provided at the fire fighting and rescue site, so that the firemen can timely eliminate the disaster in a small range. In recent years, fire water supply equipment is gradually introduced into actual projects, and the fire water tank is an important facility for emergency protection and fire emergency rescue.

[0003] The fire water tank will produce cyclone when sucking water, and the reason is very simple: in the process of causing the liquid surface to drop due to pipeline water suction, the drop rate of a certain point is greater than that of other surfaces, so that negative pressure is generated at the position, thereby forming cyclone, and air will be brought into the liquid along with the cyclone.

[0004] If cyclone is generated in the fire water tank, air enters the pipeline, which will cause the pressure of the fire pipeline network to drop, and can cause part of the fire facilities to be unable to be normally used, thereby causing the effective volume of the fire water tank to be less than the actual water storage volume, so that the effective volume of the fire water tank cannot meet the requirements of the fire specification.

[0005] At present, the cyclone prevention component used by the fire water tank is a cyclone preventer, and the cyclone preventer is usually installed on the water outlet pipeline of the water tank, as shown in the drawing. Figure 3 The principle of the cyclone preventer is: water is sucked from a broad space instead of a certain point, the water flow uniformly flows around and air is avoided to flow in, so that the water flow speed at each surface inlet is reduced, and the water surface can uniformly drop, thereby avoiding the generation of cyclone.

[0006] However, there are some problems in the use process of the cyclone preventer at present: (1) the cyclone preventer is usually provided with guide vanes inside, which are used for eliminating vortex and stabilizing flow, and these structures (two cover plates are further arranged above and below the cyclone preventer) will force the fluid to change direction or divide the flow line, so that local turbulent flow is intensified, and water head loss is increased; (2) in addition, the installation and maintenance are complex, the occupied space is large, the cost is high, and the like, and the installation height of the cyclone preventer needs to be not less than 20 cm from the bottom of the fire water tank, so that the water of about 30 cm of the bottom plate of the fire water tank cannot be fully used, the effective water of the fire water tank is wasted, and the effective water volume of the fire water tank cannot be utilized. Therefore, if the effective water volume of the fire water tank needs to be met, the fire water tank usually needs to be made larger, which will further cause the one-time investment cost of the fire water tank to be higher, the economy is poor, and the cost is increased. SUMMARY

[0007] In view of the drawbacks and deficiencies in the prior art, the utility model discloses a water collecting pit with whirl preventing function, and the carbon steel plate is welded on the water tank mold pressing block through hole opening, and the water outlet pipe and whirl preventing blade are welded on the two sides of the carbon steel plate, so that the effective water of the fire water tank can be fully utilized while saving space.

[0008] In order to realize the above-mentioned application purpose, the utility model adopts the technical scheme of:

[0009] A water collecting pit with whirl preventing function is located at the bottom of a fire water tank, comprising a water tank mold pressing block, a carbon steel plate, whirl preventing blades and a water tank water outlet pipe; a square hole is formed on the water tank mold pressing block, and the four sides and the bottom of the square hole are fixed with the carbon steel plate, so that the water tank mold pressing block and the five carbon steel plates form a "concave" structure; the water tank water outlet pipe is communicated with the outside of the outer side of the carbon steel plate, and a plurality of whirl preventing blades are evenly arranged on the inner side of the carbon steel plate and around the pipe end of the water tank water outlet pipe.

[0010] Further, the four sides of the square hole are welded with the carbon steel plate vertically downwards, and the bottom of the four carbon steel plates is surrounded and welded with one carbon steel plate, and the surrounded carbon steel plates are parallel to the water tank mold pressing block.

[0011] Further, the height of the "concave" structure is 70-90 cm.

[0012] Further, a round hole is formed on the carbon steel plate, and the water tank water outlet pipe is welded outside the round hole, the water tank water outlet pipe is communicated with the "concave" structure inward, and the water tank water outlet pipe is communicated with the external pipe network outward; the distance between the round hole and the carbon steel plate at the bottom of the "concave" structure is 30-50 cm.

[0013] Further, the length or width of the square hole is 50-70 cm.

[0014] Further, the whirl preventing blade is an open blade.

[0015] Further, the whirl preventing blade is provided with four, and the width of the whirl preventing blade is 5-7 cm.

[0016] Further, bolt holes are evenly formed on the side edges of the water tank mold pressing block, which are used for assembling and connecting with other water tank mold pressing blocks to form a water tank bottom plate.

[0017] Further, the side edges of the water tank mold pressing block are provided with upward or downward bent flanges, the flanges are arranged around the plate body of the water tank mold pressing block, and the included angle between the flange and the plate body of the water tank mold pressing block is 90-150°.

[0018] Further, the material of the water tank mold pressing block is corrosion-resistant material; the water tank mold pressing block is prepared by one-time metal stamping and stretching through a mold.

[0019] The present application has the following advantages:

[0020] (1) The water collecting pit with the swirl prevention function can reduce the turbulent flow and make the liquid medium uniformly pass through the water outlet pipe of the fire water tank, and has the swirl prevention function.

[0021] (2) Compared with the swirl preventer in the prior art, the water collecting pit with the swirl prevention function is located at the bottom of the fire water tank, and the water about 30 cm at the bottom of the fire water tank can be fully used, the effective volume of the fire water tank is fully utilized, and there is no phenomenon of waste of water in the fire water tank.

[0022] Moreover, the use of the water collecting pit with the swirl prevention function does not need to increase the volume of the fire water tank, and the material cost of the fire water tank is saved.

[0023] (3) The water collecting pit with the swirl prevention function is located at the bottom of the fire water tank, and does not need to additionally increase the floor area occupied by the fire water tank.

[0024] (5) The water collecting pit with the swirl prevention function is ingenious in design, simple in structure, and simple to install and maintain. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a perspective view of the water collecting pit with the swirl prevention function of the present application;

[0026] Figure 2 is a side view of the water collecting pit with the swirl prevention function of the present application;

[0027] Figure 3 is an installation schematic view of the current swirl preventer in the water tank mentioned in the background art;

[0028] Among them, 1, water tank mold pressing block, 2, carbon steel plate, 3, swirl prevention blade, 4, bolt hole, 5, water tank water outlet pipe, 6, swirl preventer, 7, water tank bottom plate, 8, water tank side plate. DETAILED DESCRIPTION

[0029] The present application will be further described in detail below with reference to the drawings and examples.

[0030] Refer to Figure 1As shown, the water sump with the anti-swirl function of the embodiment is located at the bottom of the fire water tank, and comprises a water tank molded block 1, a carbon steel plate 2, anti-swirl vanes 3 and a water tank water outlet pipe 5.

[0031] The side edges of the water tank molded block 1 are uniformly provided with bolt holes 4 for assembling and connecting with other water tank molded blocks 1 to form a water tank bottom plate. That is, the adjacent water tank molded blocks 1 can be connected and fixed by bolts in the later stage, saving time and effort.

[0032] Preferably, the side edges of the water tank molded block 1 are provided with upward or downward bent flanges, the flanges are arranged around the plate body of the water tank molded block 1, and the included angle between the flanges and the plate body of the water tank molded block 1 is 90-150°, preferably 135°. The flanges with an included angle of 135° have a more stable stress structure and are more convenient for installation and fixation between the water tank molded blocks 1.

[0033] Preferably, the material of the water tank molded block 1 is a corrosion-resistant material, such as stainless steel, carbon steel, carbon steel hot-dip galvanized material, or a composite material of stainless steel and carbon steel hot-dip galvanized material.

[0034] Preferably, the water tank molded block 1 is prepared by one-time metal stamping and stretching through a mold.

[0035] Preferably, the center distance between the bolt holes 4 on the side edges of the water tank molded block 1 is 10-15 cm.

[0036] A square hole of (50-70 cm) * (50-70 cm) is formed in the plate body of the water tank molded block 1, that is, a cavity is formed in the water tank molded block 1. The carbon steel plates 2 are welded on the four sides and the bottom of the cavity, so that the water tank molded block 1 and the five carbon steel plates 2 form a "concave" structure. The height of the "concave" structure is 70-90 cm. Specifically, the four sides of the cavity of the water tank molded block 1 are vertically welded with the carbon steel plates 2, and one carbon steel plate 2 is welded around the bottoms of the four carbon steel plates 2, which is parallel to the water tank molded block 1.

[0037] A circular hole is formed in one side of the carbon steel plate 2, and the distance between the circular hole and the bottom carbon steel plate 2 is 30-50 cm. The water tank water outlet pipe 5 is welded outside the circular hole, the water tank water outlet pipe 5 is connected to the "concave" structure, and the water tank water outlet pipe 5 is connected to the external pipe network.

[0038] A plurality of anti-swirl vanes 3 are welded and fixed inside the carbon steel plate 2, and the plurality of anti-swirl vanes 3 are uniformly arranged around the pipe end of the water tank water outlet pipe 5, so as to reduce turbulence and enable the liquid medium to uniformly pass through the water tank water outlet pipe 5, thereby achieving the anti-swirl function.

[0039] Preferably, the swirl prevention blade 3 is an open blade, which results in a head loss that is superior to that of existing swirl prevention devices.

[0040] Preferably, four swirl-prevention blades 3 are evenly arranged around the perimeter of the water tank outlet pipe 5.

[0041] Preferably, the width of the anti-swirl blade 3 is 5 to 7 cm; the anti-swirl blade 3 is made of carbon steel.

[0042] The above description is merely a preferred embodiment of the present utility model and does not constitute a limitation on the scope of protection of the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the scope of protection of the claims of the present utility model.

Claims

1. A water collection pit with anti-vortex function, characterized in that, The water collection pit with anti-vortex function is located at the bottom of the fire water tank and includes a water tank molding block, a carbon steel plate, anti-vortex blades and a water tank outlet pipe; A square hole is made on the water tank molding block, and carbon steel plates are fixed on the four sides and bottom of the square hole. In this way, the water tank molding block and the five carbon steel plates form a "U" shaped structure. A water tank outlet pipe is connected to the outside of one side of the carbon steel plate. Multiple swirl prevention blades are evenly arranged on the inside of the carbon steel plate and around the end of the water tank outlet pipe.

2. A water collection pit with anti-vortex function as described in claim 1, characterized in that, Carbon steel plates are welded vertically downwards on the four sides of the square hole. The bottom of the four carbon steel plates are enclosed and a carbon steel plate is welded on. The enclosed carbon steel plates are parallel to the water tank molding block.

3. The water collection pit with anti-vortex function as described in claim 1 or 2, characterized in that, The height of the "U"-shaped structure is 70 to 90 centimeters.

4. The water collection pit with anti-vortex function as described in claim 1 or 2, characterized in that, A circular hole is opened on one side of the carbon steel plate, and the water tank outlet pipe is welded to the outside of the circular hole. The water tank outlet pipe is connected to the "U"-shaped structure inward and to the external pipe network outward. The distance between the circular hole and the carbon steel plate at the bottom of the "U"-shaped structure is 30-50 cm.

5. The water collection pit with anti-vortex function as described in claim 1 or 2, characterized in that, The length or width of the square hole is set to 50-70 cm.

6. The water collection pit with anti-vortex function as described in claim 1 or 2, characterized in that, The swirl prevention blades are designed as open blades.

7. The water collection pit with anti-vortex function as described in claim 1 or 2, characterized in that, The swirl prevention blades are provided in four parts, and the width of the swirl prevention blades is 5 to 7 centimeters.

8. The water collection pit with anti-vortex function as described in claim 1 or 2, characterized in that, The water tank molding block has bolt holes evenly distributed on its side for assembly and connection with other water tank molding blocks to form the water tank bottom plate.

9. The water collection pit with anti-vortex function as described in claim 1 or 2, characterized in that, The side of the water tank molding block is configured as an upward or downward bent flange, which is set around the plate body of the water tank molding block. The angle between the flange and the plate body of the water tank molding block is 90 to 150°.

10. The water collection pit with anti-vortex function as described in claim 1 or 2, characterized in that, The water tank molding block is made of corrosion-resistant material; the water tank molding block is prepared by one-time metal stamping and stretching using a mold.

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