Centrifugal multi-stage filtering oily water collecting container

Abstract

The invention discloses a centrifugal multi-stage filtration oily water collection container, and solves the technical problems of poor separation effect and low treatment efficiency in the prior art. The centrifugal multi-stage filtration oily water collecting container comprises a barrel body, a defoaming assembly and a purifying assembly, an air inlet is formed in the side wall of the barrel, an air outlet is formed in the top of the barrel, and the defoaming assembly and the purifying assembly are both located between the air inlet and the air outlet. According to the centrifugal multi-stage filtering oily water collecting container, a water-air mixture enters from the side wall of the barrel, on one hand, large-mass oil drops and liquid drops can directly collide with the inner wall of the barrel, so that the oil drops and the liquid are attached to the inner wall of the barrel and deposit downwards, and on the other hand, when the water-air mixture ascends along the barrel, the oil drops and the liquid are separated from the inner wall of the barrel. And oil drops and liquid with relatively large mass gradually sink due to insufficient power under the action of gravity, and then a water-gas mixture is further treated by utilizing the defoaming assembly and the purifying assembly, so that sufficient water-gas separation is effectively realized.

Description

Technical Field

[0001] The present application belongs to the technical field of waste oil water treatment, and specifically relates to a centrifugal multi-stage filtering waste oil water collection container. Background Art

[0002] With the rapid development of society and the substantial improvement of people's quality of life, people generate a large amount of oily wastewater in their daily life activities, such as domestic wastewater generated in life activities, especially a large amount of catering wastewater generated by the catering industry; such as ship wastewater generated by ships that people take for travel, all of which contain a large amount of dirty oil. Direct discharge of oily wastewater will inevitably cause pollution to rivers or the sea, affecting the normal growth of river or marine organisms.

[0003] The existing waste oily water treatment devices still expose many problems during use: on the one hand, the waste oily water separation device has poor separation effect, so that part of the waste oily water cannot be collected and is sprayed into the cabin with the gas; on the other hand, the waste oily water to be treated has a disordered flow direction when flowing into the filter element, which is not conducive to the timely floating of the collected oil on the filter element; therefore, the oil-water separation effect is poor, and multiple cycles of treatment are often required, with low treatment efficiency. Summary of the invention

[0004] In order to solve the above technical problems, the present application provides a centrifugal multi-stage filtering dirty oil and water collection container.

[0005] The technical solution adopted to achieve the purpose of this application is that the present invention discloses a centrifugal multi-stage filtering dirty oily water collection container, comprising:

[0006] A cylinder, wherein the side wall of the cylinder is provided with an air inlet, and the top of the cylinder is provided with an air outlet;

[0007] A defoaming assembly, wherein the defoaming assembly is installed in the cylinder and is located between the air inlet and the air outlet; and

[0008] A purification component is installed in the cylinder, and the purification component is located between the defoaming component and the air outlet.

[0009] Furthermore, it also includes an air intake pipe, which is connected to the air inlet, the cross-section of the cylinder at the air inlet is circular, and the air intake pipe is tangent to the cylinder.

[0010] Furthermore, the number of the air inlet pipe and the air inlet port are both two, the two air inlet pipes and the two air inlets are arranged in one-to-one correspondence, and the two air inlet pipes are respectively used to introduce water-gas mixtures with different pressures.

[0011] Furthermore, the two air inlets are symmetrically arranged along the center of the cylinder.

[0012] Furthermore, the defoaming assembly includes at least two groups of wire mesh demisters, each of which is arranged in sequence along the height direction of the cylinder, and the wire diameter of the wire mesh demister gradually decreases in the direction toward the purification assembly.

[0013] Furthermore, the cylinder body includes a base, an end cover and at least two cylinder structures, each of the cylinder structures is connected in sequence, and each of the cylinder structures can be detachably matched, the base is connected to the cylinder structure at the bottom, the end cover is connected to the cylinder structure at the top, the air inlet is arranged on the side wall of the cylinder structure at the bottom, the air outlet is arranged on the end cover, the defoaming assembly is installed on one of the cylinder structures, and the purification assembly is installed on the other cylinder structure.

[0014] Furthermore, the barrel structure is set to three, namely a first barrel structure, a second barrel structure and a third barrel structure, the first barrel structure, the second barrel structure and the third barrel structure are arranged in sequence along the height direction, the base is connected to the first barrel structure, and the air inlet is arranged on the side wall of the first barrel structure, the defoaming assembly is installed on the second barrel structure, the purification assembly is installed on the third barrel structure, and the end cover is installed on the top of the third barrel structure.

[0015] Furthermore, a liquid outlet is provided on the base.

[0016] Furthermore, the base is provided with a stop valve at the liquid outlet.

[0017] Furthermore, a sight glass and a safety valve are provided on the cylinder.

[0018] It can be seen from the above technical scheme that the water-gas mixture of the centrifugal multi-stage filtering dirty oil and water collection container disclosed in the present application enters from the side wall of the cylinder. On the one hand, large mass oil droplets and liquid droplets can directly collide with the inner wall of the cylinder, so that the oil droplets and liquids adhere to the inner wall of the cylinder and settle downward. On the other hand, since the cylinder diameter is much larger than the air inlet diameter, the flow rate of the water-gas mixture will be reduced after entering the cylinder. When the water-gas mixture rises along the cylinder, the larger mass oil droplets and liquids that have not collided with the inner wall of the cylinder will gradually sink due to insufficient power under the action of gravity. After that, the water-gas mixture is further processed by the defoaming component and the purification component. The multi-stage separation can effectively achieve full separation of water and vapor without the need for multiple cycles, thereby greatly improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of a centrifugal multi-stage filtering waste oily water collection container in an embodiment of the present application;

[0020] Figure 2It is a cross-sectional schematic diagram of a centrifugal multi-stage filtering waste oily water collection container in an embodiment of the present application;

[0021] Figure 3 It is a partial cross-sectional schematic diagram of a centrifugal multi-stage filtering waste oily water collection container in an embodiment of the present application;

[0022] Figure 4 Schematic diagram of a top view of a centrifugal multi-stage filtering waste oil and water collection container in an embodiment of the present application

[0023] Description of reference numerals:

[0024] 1-base, 2-first cylinder structure, 3-flange, 4-second cylinder structure, 5-third cylinder structure, 6-end cover, 7-lifting ring, 8-purification assembly, 9-foam removal assembly, 10-wire mesh demister, 11-sealing ring, 12-stop valve, 13-safety valve, 14-sight glass. DETAILED DESCRIPTION

[0025] In order to enable technicians in the technical field to which the present application belongs to understand the present application more clearly, the technical solution of the present application is described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0026] See also Figures 1 to 4 In the embodiment of the present application, the centrifugal multi-stage filtering dirty oil water collection container includes a cylinder, a defoaming component 9 for absorbing fine oil droplets and liquid droplets, and a purification component 8 for removing odors. An air inlet is provided on the side wall of the cylinder, and an air outlet is provided on the top of the cylinder. The defoaming component 9 and the purification component 8 are arranged in sequence along the height direction of the cylinder, and the defoaming component 9 and the purification component 8 are both located between the air inlet and the air outlet.

[0027] Through the above embodiments, the present application has the following beneficial effects or advantages: the water-gas mixture of the centrifugal multi-stage filtering dirty oil and water collection container disclosed in the present application enters from the side wall of the cylinder. On the one hand, large mass oil droplets and liquid droplets can collide directly with the inner wall of the cylinder, so that the oil droplets and liquids adhere to the inner wall of the cylinder and settle downward; on the other hand, since the cylinder diameter is much larger than the air inlet diameter, the flow rate of the water-gas mixture will be reduced after entering the cylinder. When the water-gas mixture rises along the cylinder, the large mass oil droplets and liquids that have not collided with the inner wall of the cylinder will gradually sink due to insufficient power under the action of gravity, and then the water-gas mixture is further processed by the defoaming component 9 and the purification component 8. The multi-stage separation can effectively achieve full separation of water and vapor without the need for multiple cycles, thereby greatly improving the processing efficiency.

[0028] In addition, the gas filtered by the centrifugal multi-stage filtration waste oil and water collection container can be directly discharged into the cabin without air compression, which can effectively reduce noise generation and thus protect the hearing health of the crew.

[0029] See also Figure 4 In this embodiment, a part of the cross section of the cylinder can be circular, or the cross section of all positions of the cylinder can be circular, as long as the cross section of the cylinder at least at the air inlet is circular. Then, an air inlet pipe is set on the cylinder, and the air inlet pipe is tangent to the cylinder. In this way, after the water-gas mixture enters the cylinder along the air inlet pipe, it will flow along the inner wall of the cylinder, that is, the water-gas mixture will rotate along the inner wall of the cylinder. In this process, although the gas can continue to rotate, the large-mass droplets and oil droplets will directly collide with the inner wall of the cylinder under the action of centrifugal force and adhere to the inner wall of the cylinder because the driving force given to them by the air flow cannot overcome their own inertia. Then, as the oil droplets and liquid droplets on the inner wall of the cylinder accumulate, these oil droplets and liquids will break their surface tension and begin to flow downward along the side wall of the cylinder until they are gathered in the base 1. At this time, the first gas-liquid separation can be achieved, which is also called mass inertia collision centrifugal separation method.

[0030] At the same time, as more and more gas continues to enter the cylinder, the gas in the cylinder will turn and flow upward while rotating along the inner wall of the cylinder.

[0031] During the upward flow of the water-gas mixture, the liquid and oil droplets in the water-gas mixture that are larger in mass but have not collided with the inner wall of the cylinder mainly move upward with the help of the airflow. However, as the gas moves upward, its flow rate will gradually slow down, resulting in a gradual decrease in the thrust on the liquid and oil droplets. At this time, these liquid and oil droplets that are larger in mass but have not collided with the inner wall of the cylinder will begin to settle downward under the action of gravity, thus achieving the second gas-liquid separation, also known as gravity separation.

[0032] The water-gas mixture continues to flow upward and comes into contact with the defoaming assembly 9, which is mainly composed of a wire mesh. When the gas with oil droplets and liquid droplets rises through the wire mesh at a certain speed, the oil droplets and liquid droplets collide with the wire mesh filaments and are attached to the surface of the filaments due to the inertia of the rising oil droplets and liquid droplets. The diffusion of oil droplets and liquid droplets on the surface of the filaments and the sedimentation of gravity cause the oil droplets and liquid droplets to form larger droplets that flow along the filaments to the intersection of the two filaments. The wettability of the filaments, the surface tension of the liquid, and the capillary action of the filaments make the droplets larger and larger. When the aggregated droplets are so large that the gravity generated by themselves exceeds the combined force of the gas rising force and the liquid surface tension, the droplets will break away from the filaments and fall to the bottom of the container. This is the third gas-liquid separation, also known as the collision adsorption separation method.

[0033] After the gas passes through the wire mesh demister 10, it is basically free of oil droplets and liquid droplets. At the same time, the high-pressure gas-liquid mixture can be reduced in pressure and buffered. The wire mesh forms an obstacle, which can silence the high-pressure air when it is discharged, and there is basically no noise when it is discharged.

[0034] At this point, the oil droplets and liquid droplets are basically all peeled off from the gas, and the gas continues to rise into the purification component 8, while the oil droplets and liquid droplets all drip or flow to the bottom of the cylinder under gravity. A liquid outlet can be set at the bottom of the cylinder, and the gathered oil droplets and liquid droplets can be discharged from the liquid outlet. A stop valve 12 can also be set at the bottom of the cylinder at the liquid outlet to control the opening and closing of the liquid outlet, so as to prevent the water-gas mixture from flowing out directly from the liquid outlet when the liquid level in the cylinder is lower than the liquid outlet.

[0035] On the other hand, when the gas enters the purification component 8, which is mainly composed of a carbon box, the gas can be directly sent into the cabin after being purified by the activated carbon in the carbon box to remove the oil smell.

[0036] The centrifugal multi-stage filtering waste oily water collection container disclosed in this embodiment undergoes three gas-liquid separations and one gas deodorization and purification treatment, so that the waste oily water can be discharged smoothly and the gas also meets the standards for boats.

[0037] In some implementations of this embodiment, in order to make it easier to maintain and replace the various components in the centrifugal multi-stage filtration waste oil and water collection container, the cylinder body can be set as a plurality of detachable and matching cylinder structures, and the defoaming component 9 and the purification component 8 are respectively installed in each cylinder structure, which is more convenient for disassembly and assembly.

[0038] Specifically, the cylinder body may include a base 1, an end cover 6 and at least two cylinder structures. Each cylinder structure is connected in sequence, and each cylinder structure can be detachably matched. Adjacent cylinder structures can be fixed by clamps. When disassembly is required, the clamps can be directly removed to separate the two adjacent cylinder structures. Of course, the connection of adjacent cylinder structures by clamps is only one embodiment in the embodiment. In other embodiments, it is also possible for adjacent cylinder structures to be connected by flange 3 structures or threaded structures, and sealing rings 11 are provided between adjacent cylinder structures.

[0039] The number of barrel structures can be controlled as needed. This embodiment is described by taking three barrel structures as an example. At this time, the three barrel structures are the first barrel structure 2, the second barrel structure 4 and the third barrel structure 5. The first barrel structure 2, the second barrel structure 4 and the third barrel structure 5 are arranged in sequence from bottom to top. Of course, in other embodiments, only two barrel structures or more than four barrel structures may also be arranged.

[0040] The first cylinder structure 2 is located at the bottom, and a sight glass 14 and a safety valve 13 can be set on the first cylinder structure 2. The sight glass 14 can be used to observe the working conditions in the cylinder in real time so as to make quick adjustments. The safety valve 13 is used to ensure that the cylinder works in a safe environment. When the pressure in the cylinder is too high, the pressure can be discharged through the safety valve 13. The air inlet can be set on the first cylinder structure 2, and the air intake pipe is set tangent to the first cylinder structure 2. The water-gas mixture can directly enter the first cylinder structure 2 along the air intake pipe. In order to allow the water-gas mixture to rotate, the first cylinder structure 2 can be set to have a circular internal cross-section. Of course, depending on the situation, it is possible to set the second cylinder structure 4 and the third cylinder structure 5 to have a circular cross-section.

[0041] Among them, the air inlet and the air inlet pipe can be set to two, and the two air inlet pipes and the two air inlets are set in a one-to-one correspondence, and the two air inlet pipes are used to pass water-gas mixtures with different pressures. After the water-gas mixtures with different pressures enter the first cylinder structure 2 at the same time, the rotation effect of the water-gas mixture in the first cylinder structure 2 can be further improved under the action of the pressure difference. Of course, this embodiment only discloses the implementation of setting one and two air inlets. In other implementations, it is also possible to set more air inlets and connecting pipes, and each air inlet can pass water-gas mixtures with different pressures respectively or simultaneously pass water-gas mixtures with the same pressure.

[0042] See also Figure 4 When the number of the air intake pipe and the air intake port is two, the two air intake pipes may form a centrally symmetrical structure along the first cylinder structure 2, so that the water-gas mixture entering the first cylinder structure 2 through the two air intake pipes can rotate in the same direction. After the airflow enters the first cylinder structure 2, its rotation speed will gradually decrease with the distance of rotation due to the loss of subsequent driving force. The centrally symmetrical arrangement of the two air intake pipes can allow the airflow to obtain power supplement at the next air intake port when the power decreases, so that the water-gas mixture in the two air intake pipes can continue to rotate at a high speed after entering the first cylinder structure 2, thereby separating large-diameter droplets and oil droplets more quickly. Of course, when there are more air intake pipes, each air intake pipe can also be arranged in a centrally symmetrical manner.

[0043] The second cylinder structure 4 is located in the middle position, and the defoaming assembly 9 is installed on the second cylinder structure 4, and the defoaming assembly 9 is detachably matched with the second cylinder structure 4. In the present embodiment, in order to improve the defoaming effect of the defoaming assembly 9, the defoaming assembly 9 can be provided with at least two groups of wire mesh defoamers 10. Each wire mesh defoamer 10 is arranged in sequence along the height direction of the cylinder, and the wire diameter of the wire mesh defoamer 10 gradually decreases in the direction toward the purification assembly 8. When the water vapor rises, the water vapor first contacts with the filaments with larger diameters, at which time the droplets and oil droplets with larger diameters are attached to the filaments, and as the water vapor continues to rise, the diameter of the filaments above becomes smaller and smaller, but the density of the wire mesh becomes larger and larger, which can ensure that the oil droplets and droplets with smaller diameters in the water vapor can have the opportunity to contact the wire mesh defoamer 10, thereby ensuring that all the oil droplets and droplets in the water vapor are attached to the wire mesh defoamer 10. It is possible to set two, three or even more groups of the wire mesh defoamer 10 as needed.

[0044] The third barrel structure 5 is arranged at the top, the purification component 8 can be installed in the third barrel structure 5, and the purification component 8 and the third barrel structure 5 are detachably matched.

[0045] The base 1 is connected to the bottom of the first cylinder structure 2, and the base 1 and the first cylinder structure 2 are detachably matched, and can be connected by means of threads or the like. The base 1 has a gathering chamber, and oil droplets and liquid droplets of the water-gas mixture can be gathered in the gathering chamber. The liquid outlet is provided at the base 1, and the liquid outlet is communicated with the gathering chamber, and the stop valve 12 can also be installed at the liquid outlet of the base 1.

[0046] The end cover 6 is connected to the top of the third cylinder structure 5 , and the end cover 6 and the third cylinder structure 5 are detachably matched, and can be specifically connected by means of a flange 3 or the like. A sealing ring 11 is provided between the end cover 6 and the third cylinder, and an air outlet is provided at the end cover 6 .

[0047] The centrifugal multi-stage filtering waste oily water collection container disclosed in this embodiment specifically works as follows:

[0048] The water-gas mixture enters the first cylinder structure 2 along the air inlet pipe and performs a rotational motion in the first cylinder structure 2. At this time, the centrifugal force is used to perform the first water-gas separation.

[0049] As the gas continues to be output, the gas can drive the liquid droplets and oil droplets with smaller diameters (lighter weight) to rise. At this time, the oil droplets and liquid droplets with larger diameters are separated. This is the second water-gas separation.

[0050] After the water-gas mixture enters the second cylinder structure 4, the oil droplets and liquid droplets in the water-gas mixture are attached to the wire mesh demister 10. This is the third water-gas separation, at which the gas and the oil droplets and liquid droplets can be completely separated;

[0051] Only the gas continues to rise into the purification component 8 for deodorization and finally discharged into the cabin, while the liquid droplets and oil droplets fall and gather in the gathering chamber in the base 1, and then are discharged from the liquid outlet;

[0052] At this point, the water vapor is completely separated, and the gas and liquid are sent out separately.

[0053] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0054] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A centrifugal multi-stage filtering dirty oily water collection container, characterized in that: include: A cylinder, wherein the side wall of the cylinder is provided with an air inlet, and the top of the cylinder is provided with an air outlet; A defoaming assembly, the defoaming assembly is installed in the cylinder, and the defoaming assembly is located between the air inlet and the air outlet; as well as A purification component is installed in the cylinder, and the purification component is located between the defoaming component and the air outlet.

2. The centrifugal multi-stage filtering dirty oily water collection container according to claim 1 is characterized in that: It also includes an air intake pipe, which is communicated with the air inlet. The cross section of the cylinder at the air inlet is circular, and the air intake pipe is tangent to the cylinder.

3. The centrifugal multi-stage filtering dirty oily water collection container according to claim 2 is characterized in that: The two air inlet pipes and the two air inlet ports are both provided in two, and the two air inlet pipes and the two air inlet ports are provided in one-to-one correspondence, and the two air inlet pipes are respectively used to introduce water-gas mixtures with different pressures.

4. The centrifugal multi-stage filtering dirty oily water collection container according to claim 3 is characterized in that: The two air inlets are symmetrically arranged along the center of the cylinder.

5. The centrifugal multi-stage filtering dirty oily water collection container according to claim 1 is characterized in that: The defoaming assembly comprises at least two groups of wire mesh defoamers, each of which is arranged in sequence along the height direction of the cylinder, and the wire diameter of the wire mesh defoamer gradually decreases in the direction toward the purification assembly.

6. The centrifugal multi-stage filtering dirty oily water collection container according to any one of claims 1 to 5, characterized in that: The cylinder body includes a base, an end cover and at least two cylinder structures, each of which is connected in sequence and can be detachably matched. The base is connected to the cylinder structure at the bottom, and the end cover is connected to the cylinder structure at the top. The air inlet is arranged on the side wall of the cylinder structure at the bottom, and the air outlet is arranged on the end cover. The defoaming assembly is installed on one of the cylinder structures, and the purification assembly is installed on the other cylinder structure.

7. The centrifugal multi-stage filtering dirty oily water collection container according to claim 6 is characterized in that: The barrel structure is provided in three parts, namely a first barrel structure, a second barrel structure and a third barrel structure, the first barrel structure, the second barrel structure and the third barrel structure are arranged in sequence along the height direction, the base is connected to the first barrel structure, and the air inlet is arranged on the side wall of the first barrel structure, the defoaming assembly is installed on the second barrel structure, the purification assembly is installed on the third barrel structure, and the end cover is installed on the top of the third barrel structure.

8. The centrifugal multi-stage filtering dirty oily water collection container according to claim 6 is characterized in that: The base is provided with a liquid outlet.

9. The centrifugal multi-stage filtering dirty oily water collection container according to claim 1, characterized in that: The base is provided with a stop valve at the liquid outlet.

10. The centrifugal multi-stage filtering dirty oily water collection container according to claim 1, characterized in that: The cylinder is provided with a sight glass and a safety valve.

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