Efficient defoaming system

Abstract

The utility model discloses an efficient defoaming system and relates to the field of defoaming system devices. The efficient defoaming system comprises an alkali liquor tank, a defoaming tank used for draining foam is arranged on the side wall of the alkali liquor tank, an efficient defoaming machine is arranged at the top of the defoaming tank, and the efficient defoaming machine is used for eliminating the foam; the efficient defoaming machine comprises a variable-frequency motor arranged at the top of the defoaming tank, the variable-frequency motor is used for adjusting the power of the efficient defoaming machine, and a water suction pipe is arranged at the bottom of the variable-frequency motor. According to the efficient defoaming system, the efficient defoaming machine and the variable frequency motor are arranged, so that the power can be automatically adjusted according to the foam amount, and the power consumption is conveniently reduced; a water suction pipe is arranged, and liquid can be sprayed while defoaming is conducted through the water suction pipe, so that the defoaming efficiency is improved; the defoaming tank is additionally arranged, so that foam drainage is facilitated, and transformation on an existing tank body or the condition that an existing tank top is not provided with an installation condition is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of defoaming systems, in particular to a high-efficiency defoaming system. Background Art

[0002] Before leaving the factory, the steel strips of the cold rolling mill need to go through a series of cleaning processes such as spraying, brushing, and electrolysis. The cleaning liquid uses NaOH solution and adds surfactants. A large amount of foam will be generated during the cleaning process. If the foaming is not dealt with in time, a large amount of foam will overflow from the unit, which will not only make the working environment harsh, but also cause waste of alkali solution and high consumption per ton.

[0003] The existing problems are that the production cost of defoaming by spraying defoaming agents is high, the effect of mechanical defoaming is poor, and it is difficult to meet the defoaming requirements;

[0004] The reason for this problem is that, currently, the main method is to defoam by spraying defoaming agent. However, the production cost of defoaming agent is high and the dosage of defoaming agent is large, which can easily increase the cost of production and processing; the second method is to defoam mechanically. Since the surfactant is added to the cleaning liquid, the foam generated by cleaning is very stubborn. The conventional mechanical defoaming effect cannot meet the expectation, and a small amount of defoaming agent must be added, resulting in poor defoaming effect. In view of the shortcomings of the existing technology, we propose an efficient defoaming system to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a high-efficiency defoaming system, which solves the problems that the current defoaming by spraying defoaming agents has high production costs, the effect of mechanical defoaming is poor, and it is difficult to meet the defoaming requirements.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: an efficient defoaming system, comprising an alkali liquid tank, a defoaming tank is arranged on the side wall of the alkali liquid tank, the defoaming tank is used to drain the foam, and a defoaming unit is arranged on the top of the defoaming tank;

[0007] The defoaming unit comprises a high-efficiency defoaming machine arranged on the top of the defoaming tank, and the high-efficiency defoaming machine is used to eliminate foam;

[0008] The high-efficiency defoaming machine comprises a variable frequency motor arranged on the top of the defoaming tank, the variable frequency motor is used to adjust the power of the high-efficiency defoaming machine, and a water suction pipe is arranged at the bottom of the variable frequency motor.

[0009] Preferably, the variable frequency motor is fixedly connected to the top of the defoaming tank, a high-speed impeller is arranged inside the defoaming tank, and the output shaft of the variable frequency motor is rotationally connected to the high-speed impeller.

[0010] Preferably, the outer peripheral wall of the high-speed impeller is provided with a volute, and a bubble suction tube is installed at the bottom of the volute.

[0011] Preferably, the water suction pipe passes through the bubble suction pipe, and the water suction pipe is fixedly connected to the bottom of the volute.

[0012] Preferably, a liquid level gauge is provided on the side wall of the defoaming tank, and the liquid level gauge is used to monitor the liquid level in the defoaming tank.

[0013] Preferably, a reflux pipe is provided on the side wall of the defoaming tank, an end of the reflux pipe is fixedly connected to the alkali solution tank, and a valve and a centrifugal pump are provided inside the reflux pipe.

[0014] The utility model discloses a high-efficiency defoaming system, which has the following beneficial effects: the high-efficiency defoaming system can automatically adjust the power size according to the amount of foam by setting a high-efficiency defoaming machine and a variable frequency motor, so as to reduce power consumption and save costs;

[0015] By arranging a water suction pipe on the high-efficiency defoaming machine, liquid can be sprayed through the water suction pipe while defoaming to improve the defoaming efficiency;

[0016] By adding a defoaming tank, it is easy to drain the foam, reducing the modification on the existing tank body or the situation where the existing tank top has no installation conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the structure of the defoaming tank of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the utility model high-efficiency defoaming machine.

[0020] In the figure: 1. High-efficiency defoaming machine; 101. Frequency conversion motor; 102. High-speed impeller; 103. Volute; 104. Bubble suction pipe; 105. Water suction pipe; 2. Defoaming tank; 3. Centrifugal pump; 4. Valve; 5. Liquid level meter; 6. Alkali liquid tank; 7. Reflux pipe. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The embodiments of the present application provide a high-efficiency defoaming system to solve the problems that the current defoaming by spraying defoaming agents has high production costs, the effect of mechanical defoaming is poor, and it is difficult to meet the defoaming requirements.

[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] The utility model embodiment discloses a high-efficiency defoaming system.

[0025] According to the attached Figure 1-2 As shown, a high-efficiency defoaming system includes an alkali liquid tank 6, and a defoaming tank 2 is arranged on the side wall of the alkali liquid tank 6, so as to avoid the situation that the high-efficiency defoaming machine 1 cannot be directly installed on the alkali liquid tank 6 due to the limitation of the on-site space. The defoaming tank 2 is used to drain the foam, and a defoaming unit is arranged on the top of the defoaming tank 2;

[0026] The defoaming unit comprises a high-efficiency defoaming machine 1 arranged on the top of the defoaming tank 2, and the high-efficiency defoaming machine 1 is used to eliminate foam;

[0027] The high-efficiency defoaming machine 1 includes a variable frequency motor 101 disposed on the top of the defoaming tank 2. The variable frequency motor 101 is used to adjust the power of the high-efficiency defoaming machine 1. The variable frequency motor 101 can automatically adjust the power size according to the amount of foam, thereby reducing power consumption and saving costs.

[0028] A water suction pipe 105 is provided at the bottom of the variable frequency motor 101 .

[0029] The variable frequency motor 101 is fixedly connected to the top of the defoaming tank 2 . A high-speed impeller 102 is arranged inside the defoaming tank 2 . The output shaft of the variable frequency motor 101 is rotationally connected to the high-speed impeller 102 .

[0030] The outer peripheral wall of the high-speed impeller 102 is provided with a volute 103 , and a bubble suction tube 104 is installed at the bottom of the volute 103 .

[0031] The water suction pipe 105 passes through the bubble suction pipe 104 , and the water suction pipe 105 is fixedly connected to the bottom of the volute 103 .

[0032] A liquid level meter 5 is provided on the side wall of the defoaming tank 2 . When the liquid level of the defoaming liquid in the defoaming tank 2 rises, the liquid level meter 5 is used to monitor the liquid level in the defoaming tank 2 in real time.

[0033] The side wall of the defoaming tank 2 is provided with a reflux pipe 7, the end of which is fixedly connected to the alkali liquid tank 6, and the interior of the reflux pipe 7 is provided with a valve 4 and a centrifugal pump 3;

[0034] A PLc control cabinet is also provided on the outside of the defoaming system. The start and stop liquid levels of the centrifugal pump 3 in the defoaming tank 2 can be set through the PLc control cabinet, so that the defoaming liquid can be pumped back to the alkali liquid tank 6.

[0035] When the utility model is in use, the high-efficiency defoamer 1 is first operated, and the frequency conversion motor 101 can drive the high-speed impeller 102 to operate at high speed in the volute 103, and negative pressure will be generated in the center of the volute 103. Secondly, the foam will be sucked into the volute 103 through the bubble suction tube 104, and a small amount of liquid will be sucked by the water suction tube 105. Finally, the foam and liquid are sucked into the volute 103, and the shear force provided by the high-speed impeller 102 can tear the bubbles apart, and at the same time, the liquid is sprinkled at high speed to the foam for defoaming, and the liquid released by the bubbles is immediately thrown to the wall of the device by the centrifugal force, and is compressed into a liquid flow and returned to the liquid, which can reduce the loss of escaping liquid, that is, the defoaming process can be completed.

[0036] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An efficient defoaming system, comprising an alkali liquid tank (6), characterized in that: A defoaming tank (2) is provided on the side wall of the alkali liquid tank (6), the defoaming tank (2) is used to drain the foam, and a defoaming unit is provided on the top of the defoaming tank (2); The defoaming unit comprises a high-efficiency defoaming machine (1) arranged on the top of the defoaming tank (2), and the high-efficiency defoaming machine (1) is used to eliminate foam; The high-efficiency defoaming machine (1) comprises a variable frequency motor (101) arranged on the top of the defoaming tank (2), the variable frequency motor (101) is used to adjust the power of the high-efficiency defoaming machine (1), and a water suction pipe (105) is arranged at the bottom of the variable frequency motor (101).

2. A high-efficiency defoaming system according to claim 1, characterized in that: The variable frequency motor (101) is fixedly connected to the top of the defoaming tank (2), a high-speed impeller (102) is arranged inside the defoaming tank (2), and the output shaft of the variable frequency motor (101) is rotationally connected to the high-speed impeller (102).

3. A high-efficiency defoaming system according to claim 2, characterized in that: The outer peripheral wall of the high-speed impeller (102) is provided with a volute (103), and a bubble suction tube (104) is installed at the bottom of the volute (103).

4. The high-efficiency defoaming system according to claim 1, characterized in that: The water suction pipe (105) passes through the bubble suction pipe (104), and the water suction pipe (105) is fixedly connected to the bottom of the volute (103).

5. The high-efficiency defoaming system according to claim 1, characterized in that: A liquid level meter (5) is provided on the side wall of the defoaming tank (2), and the liquid level meter (5) is used to monitor the liquid level in the defoaming tank (2).

6. The high-efficiency defoaming system according to claim 1, characterized in that: A reflux pipe (7) is provided on the side wall of the defoaming tank (2), the end of the reflux pipe (7) is fixedly connected to the alkali liquid tank (6), and a valve (4) and a centrifugal pump (3) are provided inside the reflux pipe (7).

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