Self-sealing backflow-preventing liquid storage tank

Abstract

The utility model provides a self-sealing backflow prevention liquid storage tank. The self-sealing backflow prevention liquid storage tank comprises a tank body and a backflow prevention pipeline installed in the tank body. The tank body comprises a tank wall and a containing cavity defined by the tank wall, and the containing cavity is used for storing liquid; a liquid inlet hole connected with the anti-backflow pipeline is formed in the tank body; the backflow prevention pipeline comprises a liquid inlet, a liquid outlet and a sinking part; the anti-backflow pipeline is contained in the containing cavity, the liquid inlet is connected with the liquid inlet hole, and the height of the liquid outlet in the vertical direction is larger than that of the liquid inlet; the sinking part is arranged in a U shape, and the two ends of the sinking part communicate with the liquid inlet and the liquid outlet correspondingly. According to the utility model, the liquid outlet of the pipeline is arranged to be higher than the liquid inlet and the water level of the liquid in the tank, so that the problem of liquid backflow is solved. Meanwhile, the U-shaped sinking part is designed in the tank body, and residual liquid in the pipeline is concentrated in the sinking part, so that spaces at the two ends of the sinking part are isolated, the interior of the tank is in a sealed state, and the liquid in the tank body is prevented from being polluted by external air.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of liquid storage, particularly to a self-sealing backflow prevention liquid storage tank. BACKGROUND

[0002] In a liquid storage and delivery system, the liquid storage tank is a key component. However, in the conventional liquid storage tank, if the pump suddenly stops working or the pipeline system pressure fluctuates, etc. during the liquid delivery process, the liquid may flow back to the liquid storage tank, which not only may contaminate the liquid in the liquid storage tank, but also may cause damage to the pump and other delivery equipment, and even cause a safety accident. Therefore, it is particularly important to design a liquid storage tank that can effectively prevent liquid backflow. SUMMARY

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a self-sealing backflow prevention liquid storage tank, which not only can prevent the liquid in the liquid storage tank from flowing back, but also can seal the liquid inlet pipeline and isolate the space inside and outside the tank.

[0004] To achieve the above-mentioned purposes and other related purposes, the utility model provides the following technical scheme:

[0005] A self-sealing backflow prevention liquid storage tank, comprising a tank body and a backflow prevention pipeline installed in the tank body; the tank body comprises a tank wall and a containing cavity formed by the tank wall, and the containing cavity is used for storing liquid; a liquid inlet hole connected with the backflow prevention pipeline is formed on the tank body; the backflow prevention pipeline comprises a liquid inlet, a liquid outlet, and a sinking part; the backflow prevention pipeline is contained in the containing cavity, the liquid inlet is connected with the liquid inlet hole, and the height of the liquid outlet in the vertical direction is higher than the height of the liquid inlet; the sinking part is arranged in a "U" shape, and the two ends of the sinking part are respectively communicated with the liquid inlet and the liquid outlet.

[0006] Further, the height of the liquid outlet is higher than the height of the liquid in the containing cavity.

[0007] Further, a liquid outlet hole is further formed on the tank wall; the liquid outlet hole is communicated with the containing cavity.

[0008] Further, a liquid discharge hole is further formed on the tank wall; the liquid discharge hole, the liquid outlet hole, and the liquid inlet hole are all installed with valves.

[0009] Further, a liquid supplement hole is further formed on the tank body, and the liquid supplement hole is used for supplementing liquid into the containing cavity.

[0010] Further, a water level observation hole is installed on the tank wall, and the water level observation hole is installed on the tank wall and used for observing the capacity of the liquid in the tank body.

[0011] Further, a pressure gauge is installed on the tank body, and the pressure gauge is used for monitoring the liquid pressure in the tank body.

[0012] As described above, the self-sealing anti-reflux liquid storage tank has the following beneficial effects:

[0013] 1、The self-sealing anti-reflux liquid storage tank has the following beneficial effects:

[0014] 2、The self-sealing anti-reflux liquid storage tank has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 The self-sealing anti-reflux liquid storage tank is shown in the structure diagram.

[0016] Fig. 2 The self-sealing anti-reflux liquid storage tank is shown in the structure diagram.

[0017] 1、tank body; 11、tank wall; 12、accommodation cavity; 13、liquid inlet hole; 14、liquid outlet hole; 15、liquid outlet hole; 16、liquid supplement hole; 2、anti-reflux pipeline; 21、liquid inlet; 22、liquid outlet; 3、valve; 4、water level observation port; 5、pressure gauge; 100、self-sealing anti-reflux liquid storage tank. DETAILED DESCRIPTION

[0018] The following is a specific embodiment of the present application, those skilled in the art can easily understand the other advantages and effects of the present application from the content disclosed in the specification.

[0019] Please refer to Figs. 1-2 It is understood that the structure, proportion, size, etc. shown in the drawings attached to the specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the implementation conditions of the present application, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "up", "down", "left", "right", "middle" and "one" in the specification are only for the convenience of clear description, and are not used to limit the scope of the present application, the change or adjustment of the relative relationship without substantial change of technical content is also regarded as the scope of the present application.

[0020] Please refer to Figs. 1-2The utility model provides a kind of self-sealing backflow prevention liquid storage tank 100, including tank body 1 and the backflow prevention pipeline 2 of being installed in tank body 1.Wherein, tank body 1 includes tank wall 11 and the containing cavity 12 formed by tank wall 11, the tank wall 11 is equipped with and is connected with the liquid inlet hole 13 of backflow prevention pipeline 2.

[0021] Specifically, the backflow prevention pipeline 2 is installed in the containing cavity 12, and the backflow prevention pipeline 2 includes a liquid inlet 21, a liquid outlet 22 and a sinking part 23, the liquid inlet 21 is communicated with the liquid inlet hole 13.

[0022] Further, the two ends of the sinking part 23 are communicated with the liquid inlet 21 and the liquid outlet 22 respectively, and the sinking part 23 is arranged in a "U" shape.

[0023] Further, the height of the liquid outlet 22 in the vertical direction is higher than the installation height of the liquid inlet 21.

[0024] By designing a "U" shaped sinking part 23 on the backflow prevention pipeline 2, after the liquid flows through the backflow prevention pipeline 2, it falls into the tank body 1 by its own gravity, and when the liquid delivery to the tank body 1 is stopped, the liquid in the backflow prevention pipeline 2 will mostly stay in the sinking part 23 due to the atmospheric pressure, realizing the sealing of the liquid in the tank body 1 and preventing external air from entering the tank body 1 to pollute the liquid in the tank body 1.

[0025] In addition, it should be noted that the shape of the backflow prevention pipeline 2 is not limited in the utility model, as long as there is a "U" shaped sinking part 23. For example, in other alternative embodiments, the shape of the backflow prevention pipeline 2 can also be set to "W" shape. In summary, as long as the basic function of the backflow prevention pipeline 2 is realized without affecting the structure of the liquid storage tank.

[0026] Further, the position of the liquid outlet 22 is not only above the liquid inlet 21, but also the height of the position of the liquid outlet 22 is higher than the height of the liquid in the tank body 1. The design height of the liquid outlet 22 is not only higher than the position of the liquid inlet 21, but also higher than the water level of the liquid, which can effectively prevent the liquid from flowing back.

[0027] Please continue to refer to 1, the tank wall 11 is also provided with a liquid outlet hole 14, the liquid outlet hole 14 is arranged below the liquid inlet hole 13, and the liquid outlet hole 14 is communicated with the containing cavity 12. Further, the tank wall 11 is also provided with a liquid discharge hole 15, and the liquid discharge hole 15, the liquid outlet hole 14 and the liquid inlet hole 13 are all installed with a valve 3 to control the opening and closing of each hole and the flow rate of the liquid flowing through each hole.

[0028] Liquid enters the tank body 1 from the liquid inlet hole 13 and is output from the tank body 1 from the liquid outlet hole 14; the liquid outlet hole 15 is normally closed, and when the liquid storage tank needs to be maintained or the liquid in the liquid storage tank needs to be replaced, the valve 3 on the liquid outlet hole 15 is opened, and the liquid in the tank body 1 is discharged.

[0029] In addition, the tank body 1 is also provided with a liquid supplement hole 16, and when the liquid in the tank body 1 is consumed or the liquid level in the tank body 1 is observed to be lowered, the liquid can be supplemented through the liquid supplement hole 16.

[0030] Please continue to refer to Fig. 1 The tank wall 11 is also provided with a water level observation port 4, and the water level observation port 4 is installed on the tank body 1 and extends along the length direction of the tank body 1, so that the water level in the tank body 1 can be observed by the technician, and when the water level is too high or too low, the liquid can be discharged or supplemented through the liquid outlet hole 15 and the liquid supplement hole 16.

[0031] Please continue to refer to Fig. 1 The tank wall 11 is also provided with a pressure gauge 5, and the pressure gauge 5 facilitates the technician to detect the liquid pressure in the tank body 1, so that the safety of production can be ensured.

[0032] The implementation principle of the self-sealing anti-reflux liquid storage tank 100 provided by the utility model is as follows: liquid enters the anti-reflux pipeline 2 through the liquid inlet hole 13, flows through the liquid inlet port 21 and the sinking part 23, and then flows out from the liquid outlet port 22, and under the action of its own gravity, falls into the tank body 1, and the liquid in the tank body 1 is output from the liquid outlet hole 14, and because the position of the liquid outlet port 22 is higher than that of the liquid inlet port 21 and the liquid level, the liquid in the tank body 1 will not flow back into the anti-reflux pipeline 2; after the input of liquid into the tank body 1 is stopped outside the tank body 1, the remaining liquid in the anti-reflux pipeline 2 will stay in the sinking part 23, so as to seal the entire anti-reflux pipeline 2 and prevent the liquid in the tank body 1 from being contaminated.

[0033] The above embodiments only exemplarily illustrate the principle and effects of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A self-sealing backflow-preventing liquid storage tank, characterized in that, comprising a tank body (1) and a backflow-preventing pipeline (2) installed in the tank body (1); the tank body (1) comprises a tank wall (11) and a containing cavity (12) formed by the tank wall (11), the containing cavity (12) being used for storing liquid; the tank body (1) is provided with a liquid inlet hole (13) connected with the backflow-preventing pipeline (2); the backflow-preventing pipeline (2) comprises a liquid inlet (21), a liquid outlet (22) and a sunken part (23); the backflow-preventing pipeline (2) is contained in the containing cavity (12), the liquid inlet (21) is connected with the liquid inlet hole (13), the height of the liquid outlet (22) in the vertical direction is higher than that of the liquid inlet (21); the sunken part is arranged in a "U" shape, and the two ends of the sunken part (23) are respectively communicated with the liquid inlet (21) and the liquid outlet (22).

2. A self-sealing, backflow resistant reservoir according to claim 1, wherein, The height of the liquid outlet (22) is higher than the height of the liquid in the containing cavity (12).

3. A self-sealing, backflow resistant reservoir according to claim 2, wherein, The tank wall (11) is further provided with a liquid outlet hole (14); the liquid outlet hole (14) is located below the liquid inlet and is communicated with the containing cavity (12).

4. A self-sealing, backflow-resistant reservoir according to claim 3, wherein, The tank wall (11) is further provided with a liquid discharge hole (15); the liquid discharge hole (15), the liquid outlet hole (14) and the liquid inlet hole (13) are all provided with valves (3).

5. A self-sealing, backflow resistant reservoir according to claim 1, wherein, The tank body (1) is further provided with a liquid supplement hole (16), the liquid supplement hole (16) being used for supplementing liquid into the containing cavity (12).

6. A self-sealing, backflow-resistant reservoir according to claim 1, wherein, The tank wall (11) is provided with a water level observation hole (4), the water level observation hole (4) being installed on the tank wall (11) and being used for observing the capacity of the liquid in the tank body (1).

7. A self-sealing, backflow resistant reservoir according to claim 1, wherein, The tank body (1) is provided with a pressure gauge (5), the pressure gauge (5) being used for monitoring the liquid pressure in the tank body (1).

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