Defoaming structure of centrifugal extractor

Abstract

The utility model relates to centrifugal extractor technical field, and specifically is a centrifugal extractor's defoaming structure, including defoam assembly, sets up in the light phase export department of centrifugal extractor, defoam assembly includes the elbow pipe of being connected in the light phase department of centrifugal extractor through flange, one end fixed mounting of elbow pipe has concentric reducer, the lower end fixed mounting of concentric reducer has negative pressure storehouse, and negative pressure assembly sets up in the negative pressure storehouse outside surface, negative pressure assembly includes the air pump of being fixedly installed in the negative pressure storehouse outside surface through support. In the utility model, set up defoaming storehouse in the light phase export department of centrifugal extractor, make the light phase after being defoamed cone and silk screen and enter the inside of negative pressure storehouse after preliminary defoaming, create negative pressure environment in its inside through air pump and draw air outside, further eliminate the bubble in light phase, can be controlled the addition of defoaming agent according to the kind of light phase simultaneously, thereby improve the defoaming effect and efficiency to light phase through multiple defoaming structure.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal extraction technology, specifically to a defoaming structure for a centrifugal extractor. Background Technology

[0002] Centrifugal extraction is a practical technology that uses centrifugal force to achieve contact mass transfer and phase separation between liquid and liquid phases. It is a new and efficient separation technology that combines liquid-liquid extraction and centrifugation. This technology has been widely applied by researchers in many fields such as hydrometallurgy, pharmaceuticals, wastewater treatment, nuclear energy, petrochemicals, and fine chemicals. When the centrifugal extractor is working, the raw material emulsifier, solvent degradation products, or polymers enter the high-speed rotating zone with the light phase. They are sheared and dispersed into microbubbles by the impeller. The density difference causes the bubbles to carry the light phase to float to the top. At the outlet, due to the sudden drop in pressure and gas expansion, they gather into foam. Therefore, defoaming treatment is required at the light phase outlet of the centrifugal extractor.

[0003] Existing centrifugal extractors mainly rely on internal mechanical structures, wire mesh demisters, or chemical defoamer injection for defoaming. However, the light phase is always in a flowing state, which is not ideal for full mixing or stillness. As a result, the effective contact time of the light phase when it flows through fixed mechanical defoaming elements such as wire mesh demisters or defoaming cones is insufficient. Furthermore, the diffusion, adsorption, and action of the injected chemical defoamer on the foam liquid film are also restricted by the rapid passage and limited mixing of the light phase fluid, resulting in low defoaming efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a defoaming structure for a centrifugal extractor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A defoaming structure for a centrifugal extractor includes:

[0007] A defoaming assembly is installed at the light phase outlet of a centrifugal extractor. The defoaming assembly includes a bent pipe connected to the light phase outlet of the centrifugal extractor via a flange. A concentric reducer is fixedly installed at one end of the bent pipe, and a negative pressure chamber is fixedly installed at the lower end of the concentric reducer.

[0008] A negative pressure assembly is disposed on the outer surface of the negative pressure chamber. The negative pressure assembly includes an air pump that is fixedly installed on the outer surface of the negative pressure chamber via a bracket. An air extraction pipe is fixedly installed on both the outer surface of the negative pressure chamber and the outer surface of the bend.

[0009] The water tank is fixedly installed on the outer surface of the negative pressure chamber.

[0010] Furthermore, the inner surface of the bend is fixedly equipped with defoaming cones at equal intervals, the lower end of the bend is fixedly equipped with wire mesh, and the lower end surface of the negative pressure chamber is fixedly connected to a discharge solenoid valve.

[0011] Furthermore, the air pump has a No. 1 three-way pipe fixedly installed at its suction end, and a No. 1 solenoid valve is fixedly installed at both ends of the No. 1 three-way pipe. The two No. 1 solenoid valves are respectively fixedly connected to the two suction pipes.

[0012] Furthermore, the air pump's outlet is fixedly connected to a No. 2 three-way pipe, both ends of which are fixedly connected to a No. 2 solenoid valve, one end of which is fixedly connected to a pressure pipe, and one end of which is fixedly connected to a water tank.

[0013] Furthermore, the upper surface of the water tank is provided with a liquid filling port.

[0014] Furthermore, a spiral tube is fixedly installed on the inner surface of the negative pressure chamber, and the upper end of the spiral tube is fixedly connected to a concentric reducer.

[0015] Preferably, a water injection pipe is fixedly connected to the outer surface of the negative pressure chamber, and the water injection pipe is fixedly connected to the spiral pipe, with the lower end of the water injection pipe fixedly connected to the water tank.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. After initial defoaming by multiple defoaming cones, a second defoaming process is performed by passing through a wire mesh. At this time, the air pump operates, causing the air inside the bend and negative pressure chamber to be discharged through the air pump. A negative pressure environment is created inside the bend and negative pressure chamber to accelerate the defoaming efficiency. It also facilitates the rapid discharge of air after the foam is broken. Thus, by setting a defoaming structure at the light phase outlet of the centrifugal extractor and through the cooperation of multiple defoaming methods, the defoaming effect and efficiency of the light phase are improved.

[0018] 2. When defoamer needs to be added for defoaming, open the No. 2 solenoid valve connected to the pressurization pipe and close the No. 2 solenoid valve for normal venting, allowing the air discharged by the air pump to enter the water tank and pressurize it. Under pressure, the defoamer is injected into the light phase inside the negative pressure chamber through the water injection pipe for defoaming. This allows for free control of the addition of defoamer according to the type of light phase, further improving the defoaming effect and efficiency.

[0019] 3. Guided by the spiral tube, the light phase is spirally inserted into the negative pressure chamber, reducing collisions caused by the light phase entering. At the same time, the spiral tube causes the light phase to rotate after mixing with the defoamer, increasing the uniformity of mixing between the light phase and the defoamer and accelerating the defoaming efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the defoaming component and the negative pressure component in this utility model;

[0022] Figure 3 This is a schematic diagram of the vertical cross-sectional structure of the defoaming component in this utility model;

[0023] Figure 4 This is a schematic diagram of the negative pressure component structure in this utility model;

[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of the water tank in this utility model.

[0025] In the diagram: 1. Centrifugal extractor; 2. Defoaming assembly; 201. Bend; 202. Concentric reducer; 203. Negative pressure chamber; 204. Spiral tube; 205. Feed solenoid valve; 206. Defoaming cone; 207. Wire mesh; 3. Negative pressure assembly; 301. Air pump; 302. No. 1 tee pipe; 303. Air extraction pipe; 304. No. 1 solenoid valve; 305. No. 2 tee pipe; 306. No. 2 solenoid valve; 307. Pressurization pipe; 4. Water tank; 401. Water injection pipe; 402. Liquid inlet. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 In this embodiment of the present invention, a defoaming structure for a centrifugal extractor includes a defoaming component 2, which is disposed at the light phase outlet of the centrifugal extractor 1. The defoaming component 2 includes a bent pipe 201 connected to the light phase outlet of the centrifugal extractor 1 via a flange. A concentric reducer 202 is fixedly installed at one end of the bent pipe 201, and a negative pressure chamber 203 is fixedly installed at the lower end of the concentric reducer 202. A negative pressure component 3 is disposed on the outer surface of the negative pressure chamber 203. The negative pressure component 3 includes an air pump 301 fixedly installed on the outer surface of the negative pressure chamber 203 via a bracket. An air extraction pipe 303 is fixedly installed on the outer surfaces of both the negative pressure chamber 203 and the bent pipe 201. A water tank 4 is fixedly installed on the outer surface of the negative pressure chamber 203.

[0028] Specifically, the light phase first enters the inside of the bend 201, and after preliminary defoaming, it enters the inside of the negative pressure chamber 203. The negative pressure component 3 creates a negative pressure environment inside the negative pressure chamber 203, so that the gas in the light phase is quickly discharged, thereby achieving multiple defoaming purposes.

[0029] Example 1

[0030] like Figure 2-4 As shown, in this embodiment, defoaming cones 206 are fixedly installed at equal intervals on the inner surface of the bend 201, and wire mesh 207 is fixedly installed at the lower end of the bend 201. A discharge solenoid valve 205 is fixedly connected to the lower surface of the negative pressure chamber 203. When the liquid level inside the negative pressure chamber 203 reaches a certain height, the liquid level is detected by a liquid level sensor, and the electrical signal is transmitted to the PLC controller. The PLC controller controls the opening and closing of the discharge solenoid valve 205. The discharge solenoid valve 205 opens to discharge the light phase at the bottom, and then closes the discharge solenoid valve 205. The operation is repeated to complete the discharge of the light phase, allowing a certain amount of time for the air in the light phase to be discharged. A No. 1 three-way pipe 302 is fixedly installed at the suction end of the air pump 301. A No. 1 solenoid valve 304 is fixedly installed at both ends of the No. 1 three-way pipe 302. The two No. 1 solenoid valves 304 are fixedly connected to the two suction pipes 303 respectively.

[0031] In this embodiment, the light phase flows along the inner surface of the bend 201, first passing through multiple defoaming cones 206 for initial defoaming, and then passing through the wire mesh 207 for a second defoaming. The light phase then flows into the negative pressure chamber 203 through the concentric reducer 202, making it easier for the light phase to fill the spiral tube 204 and reducing air ingress. At this time, the air pump 301 operates, opening the first solenoid valve 304, allowing air from both the bend 201 and the negative pressure chamber 203 to be discharged through the air pump 301. This facilitates the creation of a negative pressure environment inside the bend 201 and the negative pressure chamber 203, accelerating defoaming efficiency and also facilitating the rapid discharge of air after foam breakage. Thus, by setting a defoaming structure at the light phase outlet of the centrifugal extractor 1 and through the combined effect of multiple defoaming processes, the defoaming effect and efficiency of the light phase are improved.

[0032] like Figure 4 and Figure 5 As shown, in this embodiment, the outlet end of the air pump 301 is fixedly connected to a No. 2 three-way pipe 305, and both ends of the No. 2 three-way pipe 305 are fixedly connected to a No. 2 solenoid valve 306. One end of the No. 2 solenoid valve 306 is fixedly connected to a pressurizing pipe 307, and one end of the pressurizing pipe 307 is fixedly connected to the water tank 4. A water injection pipe 401 is fixedly connected to the outer surface of the negative pressure chamber 203, and the water injection pipe 401 is fixedly connected to the spiral pipe 204. The lower end of the water injection pipe 401 is fixedly connected to the water tank 4. A liquid inlet 402 is provided on the upper surface of the water tank 4.

[0033] In practice, when defoamer needs to be added for defoaming, defoamer is added into water tank 4 through liquid inlet 402. Solenoid valve 306, which is connected to pressurization pipe 307, is opened, and solenoid valve 306, which normally vents air, is closed, allowing air discharged by air pump 301 to enter water tank 4 and pressurize it. Under pressure, defoamer is injected into the light phase inside negative pressure chamber 203 through water injection pipe 401 for defoaming. This allows for free control of the addition of defoamer according to the type of light phase, further improving the defoaming effect and efficiency.

[0034] Example 2

[0035] Based on Example 1, in order to solve the problem that it is inconvenient to add defoaming agents in the light phase for defoaming.

[0036] like Figure 3 As shown, in this embodiment, a spiral tube 204 is fixedly installed on the inner surface of the negative pressure chamber 203, and the upper end of the spiral tube 204 is fixedly connected to the concentric reducer 202.

[0037] In practice, guided by the spiral tube 204, the light phase is spirally inserted into the negative pressure chamber 203, reducing the collision caused by the light phase entering the chamber. At the same time, the spiral tube 204 causes the light phase to rotate after mixing with the defoamer, increasing the uniformity of mixing between the light phase and the defoamer and accelerating the defoaming efficiency.

[0038] In this utility model, in order to facilitate the operator's control of the utility model, a PLC controller can be set up, and the air pump 301, the feeding solenoid valve 205, the liquid level sensor, the first solenoid valve 304 and the second solenoid valve 306 are all electrically connected to the PLC controller. The PLC controller is existing technology and will not be described in detail here.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A defoaming structure for a centrifugal extractor, characterized in that, include: The defoaming component (2) is located at the light phase outlet of the centrifugal extractor (1). The defoaming component (2) includes a bent pipe (201) connected to the light phase outlet of the centrifugal extractor (1) via a flange. A concentric reducer (202) is fixedly installed at one end of the bent pipe (201), and a negative pressure chamber (203) is fixedly installed at the lower end of the concentric reducer (202). A negative pressure assembly (3) is disposed on the outer surface of the negative pressure chamber (203). The negative pressure assembly (3) includes an air pump (301) fixedly installed on the outer surface of the negative pressure chamber (203) by a bracket. An air extraction pipe (303) is fixedly installed on the outer surface of both the negative pressure chamber (203) and the bend (201). The water tank (4) is fixedly installed on the outer surface of the negative pressure chamber (203).

2. The defoaming structure of the centrifugal extractor according to claim 1, characterized in that, Defoaming cones (206) are fixedly installed at equal intervals on the inner surface of the bend (201), and wire mesh (207) is fixedly installed at the lower end of the inside of the bend (201). A feeding solenoid valve (205) is fixedly connected to the lower surface of the negative pressure chamber (203).

3. The defoaming structure of the centrifugal extractor according to claim 1, characterized in that, The air pump (301) has a No. 3-way pipe (302) fixedly installed at the air extraction end. Both ends of the No. 3-way pipe (302) are fixedly installed with a No. 1 solenoid valve (304). The two No. 1 solenoid valves (304) are respectively fixedly connected to the two air extraction pipes (303).

4. The defoaming structure of the centrifugal extractor according to claim 1, characterized in that, The air pump (301) is fixedly connected to a No. 2 three-way pipe (305) at its outlet end. Both ends of the No. 2 three-way pipe (305) are fixedly connected to a No. 2 solenoid valve (306). One end of the No. 2 solenoid valve (306) is fixedly connected to a pressurizing pipe (307). One end of the pressurizing pipe (307) is fixedly connected to a water tank (4).

5. The defoaming structure of the centrifugal extractor according to claim 1, characterized in that, The water tank (4) has a liquid inlet (402) on its upper surface.

6. The defoaming structure of the centrifugal extractor according to claim 1, characterized in that, The inner surface of the negative pressure chamber (203) is fixedly installed with a spiral tube (204), and the upper end of the spiral tube (204) is fixedly connected to the concentric reducer (202).

7. The defoaming structure of the centrifugal extractor according to claim 6, characterized in that, The outer surface of the negative pressure chamber (203) is fixedly connected to a water injection pipe (401), and the water injection pipe (401) is fixedly connected to the spiral pipe (204). The lower end of the water injection pipe (401) is fixedly connected to the water tank (4).

Images