Air pressure balancing device of liquid storage equipment and liquid storage equipment

Abstract

The utility model provides an air pressure balancing device of a liquid storage device and the liquid storage device, the air pressure balancing device of the liquid storage device is communicated with a tank body, the air pressure balancing device of the liquid storage device comprises a gas-liquid discharge pipe, a first end of the gas-liquid discharge pipe is communicated with the top of the tank body, and a second end of the gas-liquid discharge pipe is communicated with the top of the tank body; the cleaning and spraying ball is arranged in the gas-liquid discharge pipe; the cleaning liquid collecting box is arranged below the second end of the gas-liquid discharging pipe, and the second end of the gas-liquid discharging pipe extends into the cleaning liquid collecting box; and the ventilation pipe is communicated with the gas-liquid discharge pipe, and the ventilation pipe is located above the cleaning liquid collection box. According to the technical scheme, the problem that the air pressure in the tank body cannot be balanced due to the fact that the air-liquid discharging pipe extends into the cleaning liquid collecting box in the prior art is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid storage equipment technical field, specifically, relate to a kind of gas pressure balancing device and liquid storage equipment of liquid storage equipment. BACKGROUND

[0002] The liquid storage equipment includes a tank and a gas pressure balancing device in communication with the tank. During production or cleaning, changes in temperature within the tank can cause changes in pressure within the tank. The gas pressure balancing device can reduce the pressure within the tank and ensure normal use of the tank.

[0003] The gas pressure balancing device includes a gas-liquid discharge pipe in communication with the tank and a cleaning liquid collection box. The gas-liquid discharge pipe can communicate the tank with the atmosphere to balance the gas pressure within the tank. When the gas-liquid discharge pipe is cleaned, cleaning liquid can flow into the cleaning liquid collection box.

[0004] However, in related technology, to avoid splashing when cleaning liquid flows into the cleaning liquid collection box, the gas-liquid discharge pipe is inserted into the cleaning liquid collection box. In this way, when the cleaning liquid in the cleaning liquid collection box is not promptly discharged, the gas-liquid discharge pipe cannot communicate the atmosphere with the tank, so that the gas pressure within the tank cannot be balanced, which can easily cause the gas pressure within the tank to be too high or too low, resulting in damage to the tank. SUMMARY

[0005] The main purpose of the present utility model is to provide a gas pressure balancing device for a liquid storage equipment and a liquid storage equipment to solve the problem of the gas-liquid discharge pipe being inserted into the cleaning liquid collection box in related technology, which makes it impossible to balance the gas pressure within the tank.

[0006] To achieve the above-mentioned purpose, according to one aspect of the present utility model, a gas pressure balancing device for a liquid storage equipment is provided, which is in communication with the tank. The gas pressure balancing device for the liquid storage equipment includes: a gas-liquid discharge pipe, a first end of the gas-liquid discharge pipe being in communication with the top of the tank; a cleaning spray ball, which is arranged in the gas-liquid discharge pipe; a cleaning liquid collection box, which is arranged below a second end of the gas-liquid discharge pipe, and the second end of the gas-liquid discharge pipe is inserted into the cleaning liquid collection box; and an air pipe, which is connected to the gas-liquid discharge pipe, and the air pipe is located above the cleaning liquid collection box.

[0007] Further, the gas pressure balancing device for the liquid storage equipment further includes a detachable pipe clamp connected between the air pipe and the gas-liquid discharge pipe.

[0008] Further, the detachable pipe clamp comprises a first clamping piece, a second clamping piece and a clamping member, the first clamping piece is provided with a first open slot, the second clamping piece is provided with a second open slot, the first end of the first clamping piece is hinged to the first end of the second clamping piece, the second end of the first clamping piece is detachably connected to the second end of the second clamping piece through the clamping member, and the first open slot and the second open slot surround a mounting hole to fixedly connect the air exchange pipe and the gas-liquid discharge pipe.

[0009] Further, the clamping member comprises a screw rod and an abutting member threadedly matched with the screw rod, the first end of the screw rod is hinged to the second end of the first clamping piece, the second end of the second clamping piece is provided with an avoiding opening for avoiding the swing of the screw rod, the screw rod passes through the avoiding opening, and the abutting member is in abutting fit with the second end of the second clamping piece to fixedly connect the second end of the first clamping piece and the second end of the second clamping piece.

[0010] Further, the air exchange pipe has an air inlet and an air outlet, the air inlet is communicated with the gas-liquid discharge pipe, and the air outlet is higher than the air inlet.

[0011] Further, the air exchange pipe has an air inlet and an air outlet, the air inlet is communicated with the gas-liquid discharge pipe, and the air outlet is higher than the air inlet.

[0012] Further, the air exchange pipe has an air inlet and an air outlet, the air inlet is communicated with the gas-liquid discharge pipe, and the air outlet is higher than the air inlet.

[0013] Further, the air exchange pipe has an air inlet and an air outlet, the air inlet is communicated with the gas-liquid discharge pipe, and the air outlet is higher than the air inlet.

[0014] Further, the air exchange pipe has an air inlet and an air outlet, the air inlet is communicated with the gas-liquid discharge pipe, and the air outlet is higher than the air inlet.

[0015] According to another aspect of the present application, a liquid storage device is provided, which comprises a tank body and a gas pressure balancing device communicated with the tank body, and the gas pressure balancing device is the above-mentioned gas pressure balancing device of the liquid storage device.

[0016] The present invention utilizes a pressure balancing device for a liquid storage device that is connected to the tank body. The pressure balancing device includes a gas-liquid discharge pipe, a cleaning spray ball, a cleaning liquid collection box, and a venting pipe. The first end of the gas-liquid discharge pipe is connected to the top of the tank body. The cleaning spray ball is disposed inside the gas-liquid discharge pipe. The cleaning liquid collection box is disposed below the second end of the gas-liquid discharge pipe, with the second end of the pipe extending into the collection box. The venting pipe is connected to the gas-liquid discharge pipe and is located above the collection box. This arrangement of the cleaning spray ball facilitates cleaning of the gas-liquid discharge pipe, and allows the cleaning liquid within the pipe to flow into the collection box. Because the second end of the gas-liquid discharge pipe extends into the collection box, splashing of the cleaning liquid is reduced. When the cleaning liquid in the collection box is not drained in time, the venting pipe can connect to the tank body through the gas-liquid discharge pipe, allowing the tank body to communicate with the atmosphere and balance the pressure within the tank. In this way, by setting up the vent pipe, the pressure imbalance inside the tank can be avoided while reducing the splashing of cleaning fluid. Therefore, the technical solution of this application effectively solves the problem in related technologies where extending the gas-liquid discharge pipe into the cleaning fluid collection box causes pressure imbalance inside the tank. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A perspective schematic diagram of an embodiment of the liquid storage device according to the present invention is shown;

[0019] Figure 2 It shows Figure 1 A magnified view of part A of the liquid storage device;

[0020] Figure 3 It shows Figure 1 A three-dimensional structural diagram of the detachable tubing clamp of the liquid storage device.

[0021] The above figures include the following reference numerals:

[0022] 10. Gas-liquid discharge pipe; 11. Second pipe section;

[0023] 20. Clean the spray balls;

[0024] 30. Cleaning fluid collection box; 31. Straight section; 32. Conical section;

[0025] 40. Ventilation pipe;

[0026] 50, detachable pipe clamp; 51, first clamping piece; 52, second clamping piece; 53, screw rod; 54, abutting piece;

[0027] 61, liquid level sensor; 62, liquid discharge pump;

[0028] 70, tank body;

[0029] 81, high liquid level detecting piece; 82, low liquid level detecting piece; 83, temperature sensor; 84, sampling valve; 85, agitator; 86, liquid inlet valve; 87, first spraying ball; 88, second spraying ball. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0031] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a reference to the presence of a feature, step, operation, device, component and / or combinations thereof.

[0032] Unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions, and numerical values set forth in the various embodiments described herein are not limiting. Also, it should be understood that the various parts shown in the drawings are not necessarily drawn to scale. Techniques, methods, and devices known to those of ordinary skill can not be discussed in detail because they can be fully explained in the literature already available and / or they can be fully explained in the description of the present application. In all examples shown and discussed herein, any specific value should be interpreted as merely an example, and not as a limitation. Thus, other examples of the exemplary embodiments can have different values. It should be noted that like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0033] In the present embodiment, as shown in Figure 1 and Figure 2As shown in the figure, the gas pressure balancing device of the liquid storage device is arranged in communication with the tank body 70. The gas pressure balancing device of the liquid storage device comprises a gas-liquid discharge pipe 10, a cleaning spray ball 20, a cleaning liquid collecting box 30, and a gas exchange pipe 40. The first end of the gas-liquid discharge pipe 10 is in communication with the top of the tank body 70. The cleaning spray ball 20 is arranged in the gas-liquid discharge pipe 10. The cleaning liquid collecting box 30 is arranged below the second end of the gas-liquid discharge pipe 10, and the second end of the gas-liquid discharge pipe 10 extends into the cleaning liquid collecting box 30. The gas exchange pipe 40 is in communication with the gas-liquid discharge pipe 10, and the gas exchange pipe 40 is located above the cleaning liquid collecting box 30.

[0034] In this way, the arrangement of the cleaning spray ball 20 facilitates the cleaning of the gas-liquid discharge pipe 10, and the cleaning liquid in the gas-liquid discharge pipe 10 can flow into the cleaning liquid collecting box 30. Since the second end of the gas-liquid discharge pipe 10 extends into the cleaning liquid collecting box 30, the splashing of the cleaning liquid when flowing into the cleaning liquid collecting box 30 is reduced. When the cleaning liquid in the cleaning liquid collecting box 30 is not discharged in time, the gas exchange pipe 40 can be in communication with the tank body 70 through the gas-liquid discharge pipe 10 to communicate the tank body 70 with the atmosphere to balance the gas pressure in the tank body 70. In this way, through the arrangement of the gas exchange pipe 40, the situation that the gas pressure in the tank body 70 cannot be balanced can be avoided while reducing the splashing of the cleaning liquid. Therefore, the technical solution of the embodiment effectively solves the problem in the related art that the gas-liquid discharge pipe extends into the cleaning liquid collecting box, so that the gas pressure in the tank body cannot be balanced.

[0035] As shown in the figure, Figures 1 to 3 The gas pressure balancing device of the liquid storage device further comprises a detachable pipe clamp 50 connected between the gas exchange pipe 40 and the gas-liquid discharge pipe 10. The arrangement of the detachable pipe clamp 50 facilitates the installation and removal of the gas exchange pipe 40 on the gas-liquid discharge pipe 10, thereby facilitating the cleaning of the gas exchange pipe 40 and improving the efficiency of cleaning and maintenance.

[0036] As shown in the figure, Figures 1 to 3 The detachable pipe clamp 50 comprises a first clamping piece 51, a second clamping piece 52, and a clamping member. The first clamping piece 51 is provided with a first open slot, and the second clamping piece 52 is provided with a second open slot. The first end of the first clamping piece 51 is hinged to the first end of the second clamping piece 52, and the second end of the first clamping piece 51 is separably connected to the second end of the second clamping piece 52 by the clamping member. The first open slot and the second open slot enclose a mounting hole to fixedly connect the gas exchange pipe 40 and the gas-liquid discharge pipe 10. The first open slot and the second open slot form the mounting hole to ensure the correct alignment and tight connection of the gas exchange pipe 40 and the gas-liquid discharge pipe 10. The first end of the first clamping piece 51 is hinged to the first end of the second clamping piece 52, and the second end of the first clamping piece 51 is separably connected to the second end of the second clamping piece 52 by the clamping member, which improves the convenience of installation and removal of the detachable pipe clamp 50, while ensuring firm connection during use, ensuring the stability and safety of system operation.

[0037] As shown in Figure 3 , the clamping member includes a screw rod 53 and an abutting member 54 threadedly matched with the screw rod 53. The first end of the screw rod 53 is hinged with the second end of the first clamping piece 51, and the second end of the second clamping piece 52 is provided with an avoiding opening for avoiding the swing of the screw rod 53. The screw rod 53 passes through the avoiding opening, and the abutting member 54 is in abutting cooperation with the second end of the second clamping piece 52 to fix the second end of the first clamping piece 51 with the second end of the second clamping piece 52. The swing of the screw rod 53 and the cooperation of the abutting member 54 ensure the reliability of the first clamping piece 51 and the second clamping piece 52 when connected. This design not only ensures the stability of the connection of the first clamping piece 51 and the second clamping piece 52, but also facilitates the separation operation of the first clamping piece 51 and the second clamping piece 52, and the fixing and disassembly of the air exchange tube 40 and the gas-liquid discharge tube 10.

[0038] As shown in Figure 1 and Figure 2 , the air exchange tube 40 has an air inlet and an air outlet, the air inlet is communicated with the gas-liquid discharge tube 10, and the air outlet is higher than the air inlet. This can effectively prevent the cleaning liquid from splashing out of the liquid storage device from the air exchange tube 40, and ensure the cleanliness during use. At the same time, it can ensure that the gas can be introduced or discharged in time when the gas pressure in the tank body 70 changes, balance the gas pressure inside and outside the tank body 70, and avoid deformation or damage of the tank body 70.

[0039] As shown in Figure 1 and Figure 2 , the angle between the axis of the air exchange tube 40 and the vertical direction is A, and 30°≤A≤70°. This can effectively prevent the cleaning liquid from splashing out of the liquid storage device from the air exchange tube 40, and ensure the smoothness of air circulation. At the same time, this inclination angle also facilitates the processing and installation of the air exchange tube 40 and the detachable tube clamp 50, and reduces the processing cost.

[0040] In the embodiment, the angle A between the axis of the air exchange tube 40 and the vertical direction is preferably 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65° or 70°.

[0041] In an embodiment not shown in the figure, the gas pressure balancing device of the liquid storage device further includes a filter screen arranged at the air outlet. The arrangement of the filter screen can reduce the possibility of foreign matter entering the air exchange tube 40 from the air outlet, thereby reducing the possibility of foreign matter entering the cleaning liquid collection box 30, and also reducing the possibility of foreign matter entering the liquid discharge pump 62 in the following, and reducing the damage probability of the liquid discharge pump 62.

[0042] As shown in Figure 1 and Figure 2As shown, the length of the ventilation pipe 40 is B, and 15 cm≤B≤45 cm. In this way, the compactness of the air pressure balancing device of the liquid storage device can be ensured, and the liquid in the gas-liquid discharge pipe 10 can be prevented from splashing out when the liquid is discharged. At the same time, when the air pressure in the tank 70 changes, the air can quickly flow through the ventilation pipe 40, so that the tank 70 is not damaged due to unbalanced air pressure. The gas-liquid discharge pipe 10 includes a first pipe section and a second pipe section 11, the first pipe section extends in a horizontal direction and is arranged in communication with the tank 70, and the second pipe section 11 extends in a vertical direction and is arranged in communication with the first pipe section. The cleaning spray ball 20 is arranged in the first pipe section, the ventilation pipe 40 is in communication with the second pipe section 11, and the second pipe section 11 extends into the cleaning liquid collection box 30. The gas-liquid discharge pipe 10 has a simple and compact structure, and is convenient for ventilation to balance the air pressure in the tank 70, and is also convenient for cleaning operation of the gas-liquid discharge pipe 10.

[0043] In the embodiment, the length B of the ventilation pipe 40 is preferably 15 cm, 20 cm, 25 cm, 30 cm, 35 cm, 40 cm, or 45 cm. The ventilation pipe 40 is a circular pipe, and the axis of the circular pipe is a straight line.

[0044] In other embodiments, the length of the ventilation pipe 40 is B, and 15 cm≤B≤45 cm. Alternatively, the gas-liquid discharge pipe 10 includes a first pipe section and a second pipe section 11, the first pipe section extends in a horizontal direction and is arranged in communication with the tank 70, and the second pipe section 11 extends in a vertical direction and is arranged in communication with the first pipe section. The cleaning spray ball 20 is arranged in the first pipe section, the ventilation pipe 40 is in communication with the second pipe section 11, and the second pipe section 11 extends into the cleaning liquid collection box 30.

[0045] In other embodiments, the ventilation pipe 40 is a bent pipe, and the axis of the bent pipe is a broken line or a curve, such as an L-shaped bent pipe or an arc-shaped bent pipe. The ventilation pipe 40 can also have other structures, as long as it can communicate with the atmosphere and the gas-liquid discharge pipe, and the exhaust port is higher than the air inlet.

[0046] As shown in Figure 1 and Figure 2 The air pressure balancing device of the liquid storage device further includes a liquid level sensor 61 and an alarm connected in signal with the liquid level sensor 61, and the liquid level sensor 61 is arranged in the cleaning liquid collection box 30. The liquid level sensor 61 can monitor the liquid level in the cleaning liquid collection box 30 in real time, and once the liquid level reaches a preset threshold, the alarm can receive the signal of the liquid level sensor 61 and respond immediately, reminding the operator to handle in time. In this way, system failure caused by poor discharge of cleaning liquid is avoided, and the need for regular manual inspection is also reduced, improving the automation and intelligence level of the system.

[0047] As shown in Figure 1 and Figure 2As shown, the cleaning liquid collecting box 30 comprises a straight cylinder section 31 and a tapered section 32 in communication with the straight cylinder section 31, the straight cylinder section 31 is located above the tapered section 32, the diameter of the tapered section 32 gradually decreases from top to bottom, the second end of the gas-liquid discharge pipe 10 extends into the straight cylinder section 31, and the bottom of the tapered section 32 is provided with a liquid discharge port. The combination of the straight cylinder section 31 and the tapered section 32 facilitates smooth flow and centralized collection of the cleaning liquid. The design of the liquid discharge port at the bottom of the tapered section 32 facilitates automatic discharge and efficient treatment of the cleaning liquid. At the same time, this structure also helps to reduce the splashing of the cleaning liquid in the cleaning liquid collecting box 30, further improving the cleanliness and operation safety of the system. The gas pressure balancing device of the liquid storage device further comprises a liquid discharge pump 62, the bottom of the cleaning liquid collecting box 30 is provided with a liquid discharge port, and the liquid inlet of the liquid discharge pump 62 is in communication with the liquid discharge port. The arrangement of the liquid discharge pump 62 can efficiently handle the discharge operation of the cleaning liquid, further reducing the possibility of the cleaning liquid in the collecting box not being discharged in time.

[0048] In other embodiments, the cleaning liquid collecting box 30 comprises a straight cylinder section 31 and a tapered section 32 in communication with the straight cylinder section 31, the straight cylinder section 31 is located above the tapered section 32, the diameter of the tapered section 32 gradually decreases from top to bottom, the second end of the gas-liquid discharge pipe 10 extends into the straight cylinder section 31, and the bottom of the tapered section 32 is provided with a liquid discharge port. Alternatively, the gas pressure balancing device of the liquid storage device further comprises a liquid discharge pump 62, the bottom of the cleaning liquid collecting box 30 is provided with a liquid discharge port, and the liquid inlet of the liquid discharge pump 62 is in communication with the liquid discharge port.

[0049] The application also provides a liquid storage device, which comprises a tank 70 and a gas pressure balancing device in communication with the tank 70, the gas pressure balancing device being the above-mentioned gas pressure balancing device of the liquid storage device. The above-mentioned gas pressure balancing device can solve the problem that the gas pressure in the tank cannot be balanced in the related art by extending the gas-liquid discharge pipe into the cleaning liquid collecting box, so that the liquid storage device with the gas pressure balancing device can solve the same technical problem.

[0050] In this embodiment, as Figure 1 and Figure 2As shown, the liquid storage device further comprises a high liquid level detection member 81, a low liquid level detection member 82, a temperature sensor 83, a sampling valve 84, a stirrer 85, a liquid inlet valve 86, a first spray ball 87 and a second spray ball 88 arranged in the tank body 70. The high liquid level detection member 81 is located above the low liquid level detection member 82, and the high liquid level detection member 81 and the low liquid level detection member 82 are used to detect the liquid level in the tank. The temperature sensor 83 is arranged to facilitate detection of the temperature in the tank body 70. The sampling valve 84 facilitates sampling of the liquid in the tank body 70 by the operator. The stirrer 85 can stir the liquid in the tank body 70. The liquid inlet valve 86 is arranged to facilitate the passage of liquid into the tank body 70. The first spray ball 87 is arranged at the top of the tank body 70, and the second spray ball 88 is arranged at the bottom of the tank body 70, and the arrangement of the first spray ball 87 and the second spray ball 88 facilitates the cleaning operation of the tank body 70.

[0051] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the protection scope of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0052] In order to facilitate the description, spatial relative terms such as "above", "upper", "on", "upper surface", "upper", etc. can be used herein to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "above" other devices or structures will be positioned "below" or "below" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative description used herein is interpreted accordingly.

[0053] In addition, it should be noted that the use of the words "first", "second" and the like to define parts is only for the convenience of distinguishing the corresponding parts, and if no further declaration is made, the above words have no special meaning, therefore it cannot be understood as a limitation on the protection scope of the present application.

[0054] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pressure equalizing device for a liquid storage device, disposed in communication with a tank (70), characterized by, The air pressure balancing device of the liquid storage device comprises: a gas-liquid discharge pipe (10) having a first end in communication with a top of the tank body (70); a cleaning spray ball (20) arranged in the gas-liquid discharge pipe (10); a cleaning liquid collecting box (30) arranged below a second end of the gas-liquid discharge pipe (10) and into which the second end of the gas-liquid discharge pipe (10) extends; an air exchange pipe (40) in communication with the gas-liquid discharge pipe (10) and located above the cleaning liquid collecting box (30).

2. The gas pressure equalizing device of the liquid storage apparatus according to claim 1, characterized by, The air pressure balancing device of the liquid storage device further comprises a detachable pipe clamp (50) connected between the air exchange pipe (40) and the gas-liquid discharge pipe (10).

3. The gas pressure equalizing device of the liquid storage apparatus according to claim 2, characterized by, The detachable pipe clamp (50) comprises a first clamping piece (51), a second clamping piece (52), and a clamping member, the first clamping piece (51) is provided with a first open slot, the second clamping piece (52) is provided with a second open slot, a first end of the first clamping piece (51) is hinged to a first end of the second clamping piece (52), a second end of the first clamping piece (51) is detachably connected to a second end of the second clamping piece (52) through the clamping member, and the first open slot and the second open slot enclose a mounting hole to fixedly connect the air exchange pipe (40) and the gas-liquid discharge pipe (10).

4. The gas pressure equalizing device of the liquid storage apparatus according to claim 3, characterized by The clamping member comprises a screw rod (53) and an abutting member (54) threadedly matched with the screw rod (53), a first end of the screw rod (53) is hinged to a second end of the first clamping piece (51), a second end of the second clamping piece (52) is provided with an avoiding opening for avoiding swinging of the screw rod (53), the screw rod (53) passes through the avoiding opening, and the abutting member (54) is in abutting cooperation with the second end of the second clamping piece (52) to fixedly connect the second end of the first clamping piece (51) and the second end of the second clamping piece (52).

5. The air pressure equalizing device of the liquid storage apparatus according to claim 1, wherein The air exchange pipe (40) has an air inlet and an air outlet, the air inlet is in communication with the gas-liquid discharge pipe (10), and the air outlet is higher than the air inlet.

6. The air pressure balancing device of the liquid storage device according to claim 5, wherein: an angle between an axis of the air exchange pipe (40) and a vertical direction is A, and 30°≤A≤70°; and / or the air pressure balancing device of the liquid storage device further comprises a filter screen arranged at the air outlet.

7. The air pressure balancing device of the liquid storage device according to claim 1, wherein: a length of the air exchange pipe (40) is B, and 15cm≤B≤45cm; and / or The gas-liquid discharge pipe (10) comprises a first pipe section and a second pipe section (11), the first pipe section extends in a horizontal direction and is arranged in communication with the tank body (70), the second pipe section (11) extends in a vertical direction and is arranged in communication with the first pipe section, the cleaning spray ball (20) is arranged in the first pipe section, the air exchange pipe (40) is in communication with the second pipe section (11), and the second pipe section (11) extends into the cleaning liquid collecting box (30).

8. The air pressure equalizing device of a liquid storage apparatus according to claim 1, wherein The gas pressure balancing device of the liquid storage equipment further comprises a liquid level sensor (61) and an alarm connected in signal communication with the liquid level sensor (61), and the liquid level sensor (61) is arranged in the cleaning liquid collecting box (30).

9. The gas pressure balancing device of the liquid storage equipment according to claim 1, characterized in that, the cleaning liquid collecting box (30) comprises a straight cylinder section (31) and a tapered section (32) in communication with the straight cylinder section (31), the straight cylinder section (31) is located above the tapered section (32), the diameter of the tapered section (32) gradually decreases from top to bottom, the second end of the gas-liquid discharge pipe (10) extends into the straight cylinder section (31), and the bottom of the tapered section (32) is provided with a liquid discharge port; and / or the gas pressure balancing device of the liquid storage equipment further comprises a liquid discharge pump (62), the bottom of the cleaning liquid collecting box (30) is provided with a liquid discharge port, and the liquid inlet of the liquid discharge pump (62) is arranged in communication with the liquid discharge port.

10. A liquid storage apparatus comprising a tank body (70) and a gas pressure equalizing device in communication with the tank body (70), characterized by, The gas pressure balancing device is the gas pressure balancing device of the liquid storage equipment according to any one of claims 1 to 9.

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