TWI843224B - Oil-water separation device - Google Patents

Abstract

An oil-water separation device includes a first separation chamber, a suction nozzle floating platform, a separation relay station, a second separation chamber, a negative pressure source and a gate valve of the relay station, wherein the first separation chamber is used for accommodating oil-water mixed liquid, and the suction nozzle floating platform has a floating platform body and the suction nozzle assembly, the separation relay station has a relay station liquid temporary storage cavity, a relay station liquid inflow channel and a relay station liquid outflow channel, and the second separation chamber has a second separation chamber liquid inlet tank and a second separation chamber water storage tank, the negative pressure source can provide negative pressure to the suction nozzle assembly, so that the suction nozzle assembly is located in the oil in the upper layer of the oil-water mixture generates a first-stage oil-water separation treatment liquid, and flows into the relay station liquid temporary storage cavity for temporary storage. The relay station gate valve can open the relay station liquid outflow channel, so that the first-stage oil-water separation treatment liquid flows into the second stage, and make the water in the second stage oil-water separation treatment liquid in the second separation chamber liquid inlet tank to settle down and enters the second separation chamber water storage tank, so as to produce a second stage oil-water separation treatment liquid. Thereby, the present application can effectively improve the oil-water separation effect.

Description

Oil-water separation equipment

This application involves the field of industrial processing technology, especially an oil-water separation device.

According to the data, industrial machinery will produce a mixture of oil and water during the processing process. If the oil and water in the mixture can be separated, they can be recycled and reused, effectively reducing industrial wastewater to comply with environmental protection. In addition, because the oil and water in the mixture can be recycled and reused, the processing cost of industrial machinery can also be reduced.

Therefore, how to provide an oil-water separation device is a problem that people in the relevant technical field need to solve urgently.

In view of the shortcomings of the above-mentioned prior art, this application provides an oil-water separation device that can improve the oil-water separation effect.

The present application embodiment provides an oil-water separation device for separating oil and water from an oil-water mixture. The oil-water separation device comprises: a first separation chamber, a suction nozzle floating platform, a separation relay station, a second separation chamber, a negative pressure source, and a relay station gate valve. The first separation chamber is provided to accommodate the oil-water mixture, wherein the oil-water mixture comprises oil floating on the upper layer of the oil-water mixture and water precipitated on the lower layer of the oil-water mixture; the suction nozzle floating platform comprises a floating platform body and a suction nozzle assembly. The suction nozzle assembly comprises a first separation chamber, a second separation chamber, a negative pressure source, and a relay station gate valve. The first separation chamber is provided to accommodate the oil-water mixture, wherein the oil-water mixture comprises oil floating on the upper layer of the oil-water mixture and water precipitated on the lower layer of the oil-water mixture. The assembly is arranged on the floating platform body, and the suction nozzle assembly floats on the upper layer of the oil-water mixture in the first separation chamber through the floating platform body; the separation relay station has a relay station liquid temporary storage chamber, a relay station liquid inflow channel and a relay station liquid outflow channel, the relay station liquid inflow channel is respectively connected to the suction nozzle assembly and the relay station liquid temporary storage chamber, and the relay station liquid outflow channel is connected to the relay station liquid temporary storage chamber; the second separation chamber has a second separation chamber liquid inlet tank and a second separation chamber water storage tank. The bottom of the second separation chamber inlet tank is connected to the second separation chamber water storage tank, and the relay station liquid outflow channel is also connected to the second separation chamber inlet tank; the negative pressure source can provide negative pressure to the suction nozzle assembly, so that the suction nozzle assembly absorbs the oil located in the upper layer of the oil-water mixed liquid, so as to perform the first stage separation of the oil and water of the oil-water mixed liquid to produce a first stage oil-water separation treatment liquid, and the first stage oil-water separation treatment liquid flows into the relay station liquid temporary storage chamber through the relay station liquid inflow channel for temporary storage; the relay station The relay station gate valve is arranged at the relay station liquid outflow channel, and is used to open the relay station liquid outflow channel, so that the first-stage oil-water separation treatment liquid flows from the relay station liquid temporary chamber into the second separation chamber liquid inlet tank through the relay station liquid outflow channel, and the water in the first-stage oil-water separation treatment liquid is precipitated downward, and enters the second separation chamber water storage tank from the second separation chamber liquid inlet tank, so as to perform the second-stage oil-water separation on the first-stage oil-water separation treatment liquid, so as to produce a second-stage oil-water separation treatment liquid.

Optionally, the separation relay station further has a relay station negative pressure source channel, the relay station negative pressure source channel is connected to the negative pressure source and the relay station liquid temporary storage chamber, and the relay station liquid temporary storage chamber is defined with a liquid level high mark and a liquid level low mark; the relay station negative pressure source channel and the relay station liquid inflow channel are higher than the liquid level high mark in the relay station liquid temporary storage chamber to avoid the relay station negative pressure source channel and the relay station negative pressure source channel. The relay station liquid inflow channel enters the first stage oil-water separation treatment liquid, so that the negative pressure source can provide negative pressure to the nozzle assembly through the relay station liquid temporary storage chamber; the relay station liquid outflow channel is lower than the liquid level low mark in the relay station liquid temporary storage chamber, so that the first stage oil-water separation treatment liquid can flow from the relay station liquid temporary storage chamber into the second separation chamber inlet tank through the relay station liquid outflow channel.

Optionally, the oil-water separation device further includes a liquid level controller, a liquid level high mark sensor and a liquid level low mark sensor, and the relay station gate valve is an electromagnetic valve, the liquid level high mark sensor is used to sense that the height of the first-stage oil-water separation treatment liquid temporarily stored in the relay station liquid temporary storage chamber is higher than the liquid level high mark, and the liquid level controller is to make the relay station gate valve open the relay station liquid outflow channel to make the first-stage oil-water separation treatment liquid flow out, so as to reduce the first-stage oil-water separation treatment liquid temporarily stored in the relay station liquid temporary storage chamber. The liquid level low mark sensor senses that the height of the first-stage oil-water separation treatment liquid temporarily stored in the liquid temporary storage chamber of the relay station is lower than the liquid level low mark. The liquid level controller causes the relay station gate valve to close the liquid outflow channel of the relay station, and causes the negative pressure source to provide negative pressure to the suction nozzle assembly, so that the first-stage oil-water separation treatment liquid flows into the liquid temporary storage chamber of the relay station through the liquid inflow channel of the relay station, so as to increase the height of the first-stage oil-water separation treatment liquid temporarily stored in the liquid temporary storage chamber of the relay station.

Optionally, the second separation chamber also has a second separation chamber water output channel, and the second separation chamber water output channel is connected to the second separation chamber water storage tank to output the water in the second stage oil-water separation treatment liquid.

Optionally, the oil-water separation device further comprises a third separation chamber, the third separation chamber comprises a third separation chamber liquid inlet tank and a third separation chamber water storage tank, the bottom of the third separation chamber liquid inlet tank is connected to the third separation chamber water storage tank, and the second separation chamber comprises a second separation chamber liquid outflow channel, the second separation chamber liquid outflow channel is respectively connected to the second separation chamber liquid inlet tank and the third separation chamber water storage tank. The third separation chamber inlet tank allows the second-stage oil-water separation treatment liquid in the second separation chamber inlet tank to flow into the third separation chamber inlet tank, and allows the water in the second-stage oil-water separation treatment liquid to settle downward and enter the third separation chamber water storage tank, so as to perform the third-stage oil-water separation on the second-stage oil-water separation treatment liquid to produce a third-stage oil-water separation treatment liquid.

Optionally, the third separation chamber further has a third separation chamber oil output channel and a third separation chamber water output channel, wherein the third separation chamber oil output channel is connected to the upper part of the third separation chamber liquid inlet tank to output the oil in the third stage oil-water separation treatment liquid; the third separation chamber water output channel is connected to the third separation chamber water storage tank to output the water in the third stage oil-water separation treatment liquid.

Optionally, the negative pressure source is connected to the relay station liquid temporary storage chamber, and can provide negative pressure to the relay station gate valve through the relay station liquid temporary storage chamber, so that the relay station gate valve closes the relay station liquid outflow channel to form a negative pressure environment in the relay station liquid temporary storage chamber, and the negative pressure source can provide negative pressure to the suction nozzle assembly through the relay station liquid temporary storage chamber.

Optionally, the liquid outflow channel of the relay station has a channel body, the relay station gate valve has a gate valve body and an opening spring, and the opening spring is located between the channel body and the gate valve body; and wherein the negative pressure source can also provide negative pressure to the relay station gate valve, and when the negative pressure source provides negative pressure to the relay station gate valve, the gate valve body is pulled by the negative pressure to move in a direction close to the channel body until it reaches the opening spring. The channel body is connected to close the liquid outflow channel of the relay station, and the opening spring located between the channel body and the gate valve body is elastically deformed; when the negative pressure source stops providing negative pressure to the relay station gate valve, the opening spring located between the channel body and the gate valve body provides elastic restoring force to push the gate valve body to move away from the gate valve body to open the liquid outflow channel of the relay station.

Optionally, the nozzle floating platform also has a nozzle assembly height adjustment mechanism, which is one of the multiple coupling units disposed on the floating platform body and is coupled to the nozzle assembly to adjust the height of the nozzle assembly relative to the floating platform body so that the nozzle assembly is located at the upper layer of the oil-water mixture.

Optionally, the nozzle assembly includes a plurality of nozzles, which define a plurality of liquid absorption areas in the oil-water mixture and absorb the oil located on the upper layer of each of the liquid absorption areas.

Compared with the prior art, the oil-water separation equipment provided in each embodiment of the present application uses the principle that the oil can float on the upper layer of the oil-water mixture due to its low density, and absorbs the liquid floating on the upper layer of the oil-water mixture by the suction nozzle floating platform to absorb most of the oil in the oil-water mixture and use it as the first-stage oil-water separation treatment liquid, and then uses at least one oil-water separation chamber to perform the oil-water separation treatment of the next stage of the oil-water mixture for the first-stage oil-water separation treatment liquid, which can not only improve the oil-water separation effect, but also enable the oil and water in the oil-water mixture to be recycled and reused, so as to effectively reduce industrial wastewater to meet environmental protection requirements and reduce the processing cost of industrial machinery.

1: Oil-water separation equipment

11: First separation chamber

12: Suction nozzle floating platform

121: Floating platform body

122: Nozzle assembly

1221: Suction nozzle

123: Nozzle assembly height adjustment mechanism

13: Separation relay station

131: Relay station liquid storage chamber

132: Relay station liquid inflow channel

133: Relay station liquid outflow channel

1331: Channel entity

134: Relay station negative pressure source channel

14: Second separation chamber

141: Second separation chamber inlet tank

142: Second separation chamber water storage tank

143: Second separation chamber water output channel

144: Second separation chamber liquid outflow channel

15: Negative pressure source

16: Relay station gate valve

161: Gate valve body

162: Open the spring

17: The third separation chamber

171: The third separation chamber enters the liquid tank

172: The third separation chamber water storage tank

173: Third separation chamber oil output channel

174: The third separation chamber water output channel

181: Liquid level controller

183: Liquid level high mark sensor

182: Liquid level low mark sensor

L: Oil-water mixture

L1: First stage oil-water separation treatment liquid

L2: Second stage oil-water separation treatment liquid

L3: The third stage oil-water separation treatment liquid

H1: High liquid level

H2: Low liquid level

F: Elastic recovery force

P: Negative pressure

O: Oil content

W: moisture

Figure 1 is a schematic diagram of the oil-water mixture in this application.

Figure 2 is a partial operation diagram of the oil-water separation equipment in this application.

Figure 3 is a partial operation diagram of the oil-water separation equipment in this application.

Figure 4 is a partial operation diagram of the oil-water separation equipment in this application.

Figure 5 is a schematic diagram of the operation of the relay station gate valve of the oil-water separation equipment in this application.

Figure 6 is a schematic diagram of the operation of the relay station gate valve of the oil-water separation equipment in this application.

Figure 7 is a schematic diagram of the operation of the relay station gate valve of the oil-water separation equipment in this application.

The following content will be accompanied by drawings to illustrate the technical content of this application through specific concrete embodiments. People familiar with this technology can easily understand other advantages and functions of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments. The details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the spirit of this application. In particular, the proportional relationship and relative position of each component in the drawings are only for exemplary purposes and do not represent the actual situation of the implementation of this application.

In addition, the structures or elements with the same or similar functions in the following embodiments will be described using the same symbols, and the description of the same or equivalent technical features will be omitted to make the disclosed content more concise and easy to understand.

Regarding the technical ideas of this application, please refer to the disclosure of Figures 1 to 7 in the drawings of this application and the following embodiments.

The oil-water separation device 1 of the present application includes a first separation chamber 11, a suction nozzle floating platform 12, a separation relay station 13, a second separation chamber 14, a negative pressure source 15, and a relay station gate valve 16.

The first separation chamber 11 is used to contain the oil-water mixture L.

The oil-water mixture L referred to in this application includes the oil O floating on the upper layer of the oil-water mixture L and the water W precipitated on the lower layer of the oil-water mixture L (refer to Figure 1).

As shown in FIG. 2 , the nozzle platform 12 has a platform body 121 and a nozzle assembly 122 .

The nozzle assembly 122 is disposed on the floating platform body 121, and the nozzle assembly 122 floats on the upper layer of the oil-water mixture L in the first separation chamber 11 through the floating platform body 121 (refer to FIG. 2).

Optionally, the nozzle floating platform 12 also has a nozzle assembly height adjustment mechanism 123, which is arranged in one of the multiple coupling units on the floating platform body 121 and is coupled to the nozzle assembly 122 to adjust the setting height of the nozzle assembly 122 relative to the floating platform body 121 (the coupling unit is schematically shown as a dotted line on the nozzle floating platform 12 in FIG. 2 ), so that the nozzle assembly 122 is located at the upper layer of the oil-water mixture L, that is, the height position of the suction port of the nozzle assembly 122 coincides with the height position of the oil content O in the oil-water mixture L, so that the nozzle assembly 122 can absorb the oil content O in the oil-water mixture L.

In this embodiment, each combination unit can be distributed on the floating platform body 121 at intervals along the height direction of the floating platform body 121, so as to adjust the combination height of the suction nozzle assembly height adjustment mechanism 123 relative to the floating platform body 121, thereby adjusting the setting height of the suction nozzle assembly 122 relative to the floating platform body 121.

Optionally, the suction nozzle assembly 122 may include a plurality of suction nozzles 1221, so as to define a plurality of liquid absorption areas in the oil-water mixture L by the plurality of suction nozzles 1221, thereby expanding the absorption range of the oil-water mixture L, and each suction nozzle 1221 is aligned with each liquid absorption area, so that each suction nozzle 1221 can enter each liquid absorption area respectively and absorb the oil O floating on the upper layer of each liquid absorption area.

Referring to FIG. 3 , the separation relay station 13 has a relay station liquid temporary storage chamber 131, a relay station liquid inflow channel 132, and a relay station liquid outflow channel 133. The relay station liquid inflow channel 132 is connected to the nozzle assembly 122 and the relay station liquid temporary storage chamber 131, respectively, and the relay station liquid outflow channel 133 is connected to the relay station liquid temporary storage chamber 131.

Referring to FIG. 4 , the second separation chamber 14 has a second separation chamber liquid inlet tank 141 and a second separation chamber water storage tank 142. The bottom of the second separation chamber liquid inlet tank 141 is connected to the second separation chamber water storage tank 142, and the relay station liquid outflow channel 133 is also connected to the second separation chamber liquid inlet tank 141.

In this embodiment, the negative pressure source 15 can provide negative pressure P to the suction nozzle assembly 122, so that the suction nozzle assembly 122 absorbs the oil O located in the upper layer of the oil-water mixed liquid L (in the first separation chamber 11) (refer to Figure 2), so as to perform the first stage separation of oil and water in the oil-water mixed liquid L to generate the first stage oil-water separation treatment liquid L1, and make the first stage oil-water separation treatment liquid L1 flow into the relay station liquid temporary chamber 131 through the relay station liquid inflow channel 132 for temporary storage (refer to Figure 3).

The relay station gate valve 16 is disposed in the relay station liquid outflow channel 133 and can control the opening and closing state of the relay station liquid outflow channel 133.

When the relay station gate valve 16 opens the relay station liquid outflow channel 133, the first-stage oil-water separation treatment liquid L1 can flow from the relay station liquid temporary chamber 131 into the second separation chamber liquid inlet tank 141 (refer to Figures 3 to 4) through the relay station liquid outflow channel 133, and the water W in the first-stage oil-water separation treatment liquid L1 is precipitated downward and enters the second separation chamber water storage tank 142 from the second separation chamber liquid inlet tank 141, so as to perform the second-stage oil-water separation of the oil-water mixed liquid L, so as to produce a second-stage oil-water separation treatment liquid L2.

Specifically, since the oil O in the first-stage oil-water separation treatment liquid L1 floats on the upper layer of the second separation chamber inlet tank 141 due to its density being less than that of the water W, at the same time, the water W in the first-stage oil-water separation treatment liquid L1 settles downward due to its density being greater than that of the oil, and enters the second separation chamber water storage tank 142 through the channel located at the bottom of the second separation chamber inlet tank 141, thereby performing the second-stage oil-water separation of the oil-water mixed liquid L, so as to further separate the residual water W in the first-stage oil-water separation treatment liquid L1, and generate a second-stage oil-water separation treatment liquid L2.

Optionally, the separation relay station 13 also has a relay station negative pressure source channel 134, which is connected to the negative pressure source 15 and the relay station liquid temporary storage chamber 131, and the relay station liquid temporary storage chamber 131 is defined with a liquid level high mark H1 and a liquid level low mark H2 (refer to Figures 3, 4, and 7).

In this embodiment, the relay station negative pressure source channel 134 and the relay station liquid inflow channel 132 are higher than the liquid level high mark H1 in the relay station liquid temporary storage chamber 131 to prevent the relay station negative pressure source channel 134 and the relay station liquid inflow channel 132 from entering the first stage oil-water separation treatment liquid L1, so that the negative pressure source 15 can use the Venturi principle to provide negative pressure to the nozzle assembly 122 through the relay station liquid temporary storage chamber 131.

In this embodiment, the relay station liquid outflow channel 133 is lower than the liquid level low mark H2 in the relay station liquid temporary storage chamber 131, so that the first stage oil-water separation treatment liquid L1 can flow from the relay station liquid temporary storage chamber 131 into the second separation chamber inlet tank 141 through the relay station liquid outflow channel 133 by the attraction of gravity.

Optionally, the oil-water separation device 1 further includes a liquid level controller 181, a liquid level high mark sensor 183 and a liquid level low mark sensor 182 (refer to Figures 5 to 7).

Optionally, the relay station gate valve 16 is an electromagnetic valve.

The liquid level high mark sensor 183 is used to sense that the height of the first-stage oil-water separation treatment liquid L1 temporarily stored in the relay station liquid temporary storage chamber 131 is higher than the liquid level high mark H1. The liquid level controller 181 makes the relay station gate valve 16 open the relay station liquid outflow channel 133 to allow the first-stage oil-water separation treatment liquid L1 to flow out, so as to reduce the height of the first-stage oil-water separation treatment liquid L1 temporarily stored in the relay station liquid temporary storage chamber 131.

When the liquid level low mark sensor 182 senses that the height of the first-stage oil-water separation treatment liquid L1 temporarily stored in the relay station liquid temporary storage chamber 131 is lower than the liquid level low mark H2, the liquid level controller 181 makes the relay station gate valve 16 close the relay station liquid outflow channel 133, and makes the negative pressure source 15 provide negative pressure P to the suction nozzle assembly 122, so that the first-stage oil-water separation treatment liquid L1 flows into the relay station liquid temporary storage chamber 131 through the relay station liquid inflow channel 132, so as to increase the height of the first-stage oil-water separation treatment liquid L1 temporarily stored in the relay station liquid temporary storage chamber 131.

Optionally, the second separation chamber 14 also has a second separation chamber water output channel 143 (refer to FIG. 4 ), which is connected to the second separation chamber water storage tank 142 to output the water W separated from the second-stage oil-water separation treatment liquid L2.

Optionally, the oil-water separation device 1 further includes a third separation chamber 17, which includes a third separation chamber liquid inlet tank 171 and a third separation chamber water storage tank 172 (refer to FIG. 4).

The bottom of the third separation chamber inlet tank 171 is connected to the third separation chamber water storage tank 172, and the second separation chamber 14 includes a second separation chamber liquid outflow channel 144, which is respectively connected to the second separation chamber inlet tank 141 and the third separation chamber inlet tank 171, so that the second stage oil-water separation treatment liquid L2 in the second separation chamber inlet tank 141 flows into the third separation chamber inlet tank 171, and the water W in the second stage oil-water separation treatment liquid L2 is precipitated downward and enters the third separation chamber water storage tank 172, so as to perform the third stage oil-water separation on the second stage oil-water separation treatment liquid L2 to generate a third stage oil-water separation treatment liquid L3.

Optionally, the third separation chamber 17 also has a third separation chamber oil output channel 173 and a third separation chamber water output channel 174. The third separation chamber oil output channel 173 is connected to the upper part of the third separation chamber liquid inlet tank 171 to output the oil O in the third stage oil-water separation treatment liquid L3; the third separation chamber water output channel 174 is connected to the third separation chamber water storage tank 172 to output the water W in the third stage oil-water separation treatment liquid L3.

Optionally, the negative pressure source 15 is connected to the relay station liquid temporary chamber 131 (refer to FIG. 3 ) to provide negative pressure to the relay station gate valve 16 through the relay station liquid temporary chamber 131, so that the relay station gate valve 16 closes the relay station liquid outflow channel 133 to form a negative pressure environment in the relay station liquid temporary chamber 131, so that the negative pressure source 15 can provide negative pressure to the nozzle assembly 122 through the relay station liquid temporary chamber 131.

Optionally, the relay station liquid outflow channel 133 has a channel body 1331, and the relay station gate valve 16 has a gate valve body 161 and an opening spring 162, and the opening spring 162 is located between the channel body 1331 and the gate valve body 161 (refer to Figures 5 to 7).

In this embodiment, the negative pressure source 15 can also provide negative pressure to the relay station gate valve 16. When the negative pressure source 15 provides negative pressure to the relay station gate valve 16, the gate valve body 161 is pulled by the negative pressure to move toward the channel body 1331 until it abuts against the channel body 1331 to close the relay station liquid outflow channel 133, and the liquid between the channel body 1331 and the gate valve body 161 is closed. The opening spring 162 between the channel body 1331 and the gate body 161 produces elastic deformation (refer to Figure 7); or, when the negative pressure source 15 stops providing negative pressure to the relay station gate valve 16, the opening spring 162 between the channel body 1331 and the gate body 161 provides an elastic restoring force F, and pushes the gate body 161 to move away from the gate body 161 to open the relay station liquid outflow channel 133 (refer to Figure 6).

In summary, the oil-water separation equipment provided by this application utilizes the principle that the density of oil is less than that of water and can float on the upper layer of the oil-water mixture. The suction nozzle floating platform absorbs the liquid floating on the upper layer of the oil-water mixture to perform the first stage oil-water separation treatment on the oil-water mixture and generate the first stage oil-water separation treatment liquid. The first stage oil-water separation treatment liquid is then subjected to the next stage oil-water separation treatment by at least one oil-water separation chamber. By utilizing this multi-stage oil-water separation treatment, the oil-water separation effect can be effectively improved.

Furthermore, the oil-water separation equipment provided by this application utilizes the design of water output channels and oil output channels, so that the oil and water separated from the oil-water mixture can be recycled and reused, which can effectively reduce industrial wastewater to comply with environmental protection and reduce the processing cost of industrial machinery.

The above embodiments are merely illustrative of the principles and effects of this application, and are not intended to limit this application. Anyone familiar with this technology may modify and change the above embodiments without violating the spirit and scope of this application. Therefore, the scope of protection of this application should be as listed in the scope of the patent application of this application.

11         First separation chamber 12         Suction nozzle float 121       Float body 122       Suction nozzle assembly 1221     Suction nozzle 123       Suction nozzle assembly height adjustment mechanism L           Oil-water mixture O          Oil W         Water

Claims (9)

An oil-water separation device is used for separating oil and water from an oil-water mixture. The oil-water separation device comprises: a first separation chamber, the first separation chamber is provided to accommodate the oil-water mixture, wherein the oil-water mixture comprises oil floating on the upper layer of the oil-water mixture and water precipitated on the lower layer of the oil-water mixture; a nozzle float, the nozzle float has a float body and a nozzle assembly, the nozzle assembly is arranged on the float body, and the nozzle assembly floats on the upper layer of the oil-water mixture in the first separation chamber through the float body; a separation relay station, the separation relay station has a relay station liquid temporary storage chamber, a relay station liquid inflow channel and a relay station liquid outflow channel, the relay station liquid inflow channel is provided to the upper layer of the oil-water mixture in the first separation chamber, and the oil-water mixture in the first separation chamber is provided to the lower layer of the oil-water mixture in the first separation chamber; and a separation relay station is provided to have a relay station liquid temporary storage chamber, a relay station liquid inflow channel and a relay station liquid outflow channel, the relay station liquid inflow channel is provided to the lower layer of the oil-water mixture in the first separation chamber. The channel is connected to the suction nozzle assembly and the relay station liquid temporary storage chamber respectively, and the relay station liquid outflow channel is connected to the relay station liquid temporary storage chamber; a second separation chamber, the second separation chamber has a second separation chamber liquid inlet tank and a second separation chamber water storage tank, the bottom of the second separation chamber liquid inlet tank is connected to the second separation chamber water storage tank, and the relay station liquid outflow channel is also connected to the relay station liquid temporary storage chamber. A negative pressure source is connected to the second separation chamber inlet tank; the negative pressure source can provide negative pressure to the suction nozzle assembly, so that the suction nozzle assembly absorbs the oil located in the upper layer of the oil-water mixture to perform the first stage separation of the oil and water of the oil-water mixture to produce a first stage oil-water separation treatment liquid, and the first stage oil-water separation treatment liquid flows into the channel through the relay station liquid The relay station liquid temporary storage chamber is temporarily stored; and a relay station gate valve is arranged in the relay station liquid outflow channel, and is used to open the relay station liquid outflow channel, so that the first stage oil-water separation treatment liquid flows from the relay station liquid temporary storage chamber into the second separation chamber inlet tank through the relay station liquid outflow channel, and the first stage oil-water separation treatment liquid flows from the relay station liquid temporary storage chamber into the second separation chamber inlet tank, and the first stage oil-water separation treatment liquid flows from the relay station liquid outflow channel into the second separation chamber inlet tank ... temporary storage chamber into the second separation chamber inlet tank, and the first stage oil-water separation treatment liquid flows from the relay station liquid outflow channel into the second separation chamber inlet tank, and the first stage oil-water separation treatment liquid flows from the relay station liquid temporary storage chamber into the second separation chamber inlet tank, and the first stage oil-water separation treatment liquid flows from the relay station liquid temporary storage chamber into the second separation chamber inlet tank, and the first stage oil-water separation treatment liquid flows from the The water in the separation treatment liquid settles downward and enters the second separation chamber water storage tank through the second separation chamber liquid inlet tank, so as to perform the second stage oil-water separation on the first stage oil-water separation treatment liquid to produce a second stage oil-water separation treatment liquid; wherein the separation relay station also has a relay station negative pressure source channel, and the relay station negative pressure source channel is respectively connected to the negative pressure source and the The relay station liquid temporary storage chamber is defined as a liquid level high mark and a liquid level low mark; the relay station negative pressure source channel and the relay station liquid inflow channel are higher than the liquid level high mark in the relay station liquid temporary storage chamber to prevent the relay station negative pressure source channel and the relay station liquid inflow channel from entering the first stage oil-water separation treatment liquid, so that the negative pressure source The Venturi principle can be used to provide negative pressure to the nozzle assembly through the relay station liquid temporary chamber; the relay station liquid outflow channel is lower than the liquid level low mark in the relay station liquid temporary chamber, so that the first stage oil-water separation treatment liquid can flow from the relay station liquid temporary chamber into the second separation chamber inlet tank through the relay station liquid outflow channel by the attraction of gravity. The oil-water separation device as described in claim 1 further includes a liquid level controller, a liquid level high mark sensor and a liquid level low mark sensor, and the relay station gate valve is an electromagnetic valve, the liquid level high mark sensor is used to sense that the height of the first-stage oil-water separation treatment liquid temporarily stored in the relay station liquid storage chamber is higher than the liquid level high mark, and the liquid level controller is to make the relay station gate valve open the relay station liquid outflow channel to make the first-stage oil-water separation treatment liquid flow out, so as to reduce the first-stage oil-water separation treatment liquid temporarily stored in the relay station liquid. The liquid level low mark sensor senses that the height of the first-stage oil-water separation treatment liquid temporarily stored in the liquid temporary storage chamber of the relay station is lower than the liquid level low mark. The liquid level controller causes the relay station gate valve to close the liquid outflow channel of the relay station, and causes the negative pressure source to provide negative pressure to the suction nozzle assembly, so that the first-stage oil-water separation treatment liquid flows into the liquid temporary storage chamber of the relay station through the liquid inflow channel of the relay station, so as to increase the height of the first-stage oil-water separation treatment liquid temporarily stored in the liquid temporary storage chamber of the relay station. The oil-water separation device as described in claim 1, wherein the second separation chamber also has a second separation chamber water output channel, and the second separation chamber water output channel is connected to the second separation chamber water storage tank to output the water in the second stage oil-water separation treatment liquid. The oil-water separation device as described in claim 1 further includes a third separation chamber, the third separation chamber includes a third separation chamber liquid inlet tank and a third separation chamber water storage tank, the bottom of the third separation chamber liquid inlet tank is connected to the third separation chamber water storage tank, and the second separation chamber includes a second separation chamber liquid outflow channel, the second separation chamber liquid outflow channel is respectively connected to the second separation chamber inlet tank and the second separation chamber liquid outflow channel. The liquid tank and the third separation chamber inlet tank allow the second stage oil-water separation treatment liquid in the second separation chamber inlet tank to flow into the third separation chamber inlet tank, and allow the water in the second stage oil-water separation treatment liquid to settle downward and enter the third separation chamber water storage tank, so as to perform the third stage oil-water separation on the second stage oil-water separation treatment liquid to produce a third stage oil-water separation treatment liquid. The oil-water separation device as described in claim 4, wherein the third separation chamber also has a third separation chamber oil output channel and a third separation chamber water output channel, the third separation chamber oil output channel is connected to the upper part of the third separation chamber liquid inlet tank to output the oil in the third stage oil-water separation treatment liquid; the third separation chamber water output channel is connected to the third separation chamber water storage tank to output the water in the third stage oil-water separation treatment liquid. The oil-water separation device as described in claim 1, wherein the negative pressure source is connected to the relay station liquid temporary storage chamber, and can provide negative pressure to the relay station gate valve through the relay station liquid temporary storage chamber, so that the relay station gate valve closes the relay station liquid outflow channel to form a negative pressure environment in the relay station liquid temporary storage chamber, and the negative pressure source can provide negative pressure to the suction nozzle assembly through the relay station liquid temporary storage chamber. The oil-water separation device as described in claim 6, wherein the liquid outflow channel of the relay station has a channel body, the relay station gate valve has a gate valve body and an opening spring, and the opening spring is located between the channel body and the gate valve body; and wherein the negative pressure source can also provide negative pressure to the relay station gate valve, and when the negative pressure source provides negative pressure to the relay station gate valve, the gate valve body is drawn by the negative pressure toward the channel body. The valve body moves in the direction until it abuts against the channel body to close the liquid outflow channel of the relay station, and causes the opening spring between the channel body and the gate valve body to produce elastic deformation; when the negative pressure source stops providing negative pressure to the relay station gate valve, the opening spring between the channel body and the gate valve body provides elastic restoring force to push the gate valve body to move away from the gate valve body to open the liquid outflow channel of the relay station. The oil-water separation device as described in claim 1, wherein the nozzle floating platform also has a nozzle assembly height adjustment mechanism, which is one of the multiple coupling units disposed on the floating platform body and is coupled to the nozzle assembly to adjust the height of the nozzle assembly relative to the floating platform body so that the nozzle assembly is located at the upper layer of the oil-water mixture. The oil-water separation device as described in claim 1, wherein the nozzle assembly includes a plurality of nozzles, and the plurality of suction areas in the oil-water mixture are defined by the plurality of nozzles, and the oil located in the upper layer of each of the suction areas is sucked.

Images