A premixing device and a spray-type oil mist treatment system

Abstract

The application provides a premixing device and a spraying oil mist treatment system. The premixing device comprises a premixing assembly, the premixing assembly comprises a side wall, the side wall is enclosed to form a premixing space, a support column is arranged in the premixing space, a premixing plate spirally downward is arranged between the side wall and the support column, and a through hole is arranged on the premixing plate. When a to-be-cleaned airflow and liquid pass through the premixing device spirally downward along the premixing plate, a water film is formed on the surface of the premixing plate. In this way, the contact area of the to-be-cleaned airflow and the water can be increased, the airflow cleaning effect can be improved, the system will not be blocked even if used for a long time, maintenance is not needed, and the maintenance cost in the later period is saved.

Description

Technical Field

[0001] This application relates to the field of oil mist treatment technology, and in particular to a premixing device and a spray-type oil mist treatment system. Background Technology

[0002] In the precision machining industry, machine tools such as CNC machine tools and grinding machines often use metal cutting fluids or release agents during processing. After atomization and evaporation, metal cutting fluids or release agents produce a large amount of oil mist. This oil mist not only contaminates mechanical parts, workshop walls, windows, and lighting equipment, but also endangers the health of employees. Long-term exposure to oil mist can easily lead to respiratory diseases, allergic skin diseases, and malignant tumors. If the oil mist is directly released into the air, it will also pollute the surrounding environment.

[0003] Meanwhile, the problem of oil mist generation exists in various fields, including cold-rolled steel, fiber ironing, tire engineering, chemical plants, and large restaurants.

[0004] Existing spray-type oil mist treatment systems typically use a combination of sprayers and packing materials. Generally, depending on the airflow to be cleaned, one or two sets of sprayers and packing materials are used. However, after prolonged use, contaminants can easily mix with the packing materials, causing blockages in the entire spray system. Furthermore, the packing materials have a limited lifespan, usually requiring replacement every 1 to 2 years, resulting in maintenance costs. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides a premixing device and a spray-type oil mist treatment system.

[0006] In a first aspect, this application provides a premixing device, including a premixing component. The premixing component includes a sidewall that encloses a premixing space. A support column is disposed within the premixing space. A spirally downward premixing plate is disposed between the sidewall and the support column. The premixing plate has through holes. When the cleaning airflow and liquid spirally downward along the premixing plate through the premixing device, a water film is formed on the surface of the premixing plate, increasing the contact area between the cleaning airflow and the water.

[0007] In some embodiments of this application, the premixed plate is provided with a plurality of through holes evenly arranged, and the through holes are circular holes.

[0008] In some embodiments of this application, a diverging portion, which is a cone, is also provided at the bottom of the premixing component.

[0009] In some embodiments of this application, a venturi tube disposed on top of the premixing component is also included.

[0010] A second aspect of this application provides a spray-type oil mist treatment system, including the premixing device described above.

[0011] In some embodiments of this application, an oil mist separator is also included, which includes oil mist separation components arranged along a predetermined straight line direction.

[0012] In some embodiments of this application, the oil mist separation assembly includes oil mist separation units arranged in a staggered manner, forming a flow chamber through which airflow passes. The flow chamber includes an inlet, an outlet, and a vortex chamber. The airflow to be cleaned enters the flow chamber from the inlet, forming a vortex airflow in the vortex chamber. Under the action of centrifugal force, oil mist particles in the airflow to be cleaned are thrown onto the side wall of the oil mist separation unit and slide down the inner wall of the flow chamber to the bottom under the action of gravity. The clean airflow flows out from the outlet.

[0013] In some embodiments of this application, the oil mist separation unit includes an arc-shaped first guide portion and a second guide portion disposed on the concave side of the first guide portion. The first guide portion includes a first guide wall and a second guide wall, and the second guide portion includes a third guide wall and a fourth guide wall. A first vortex chamber is formed between the first guide wall and the third guide wall, and a second vortex chamber is formed between the second guide wall and the fourth guide wall.

[0014] In some embodiments of this application, a spray unit, a packing unit, and a demisting unit are also included. The spray unit is disposed on the upper part of the premixing device, and the packing unit is disposed on the lower part of the premixing device. The airflow to be cleaned passes through the spray unit, the premixing device, the packing unit, the oil mist separator, and the demisting unit in sequence from the inlet, and is finally discharged from the outlet.

[0015] In some embodiments of this application, a water treatment unit is also included, which is connected to the packing unit and the spraying unit to allow the sprayed water to be recycled.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects: The premixing device of this application is provided with a premixing component. When the airflow to be cleaned and the liquid spiral downward along the premixing plate through the premixing device, a water film will be formed on the surface of the premixing plate. In this way, the contact area between the airflow to be cleaned and the water can be increased, the airflow cleaning effect can be improved, and even if it is used for a long time, it will not cause the system to be blocked, and no maintenance is required, saving the later maintenance costs.

[0017] It should be understood that the above general description and the following detailed description are merely exemplary and explanatory, and do not limit this document. Attached Figure Description

[0018] The accompanying drawings, which form part of this document, are used to provide a further understanding of the document. The illustrative embodiments and descriptions herein are used to explain the document and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of a premixing device provided in an exemplary embodiment of this application;

[0020] Figure 2 This is a top view of a premixing apparatus provided in an exemplary embodiment of this application;

[0021] Figure 3 This is a layout diagram of a premixing device provided in an exemplary embodiment of this application;

[0022] Figure 4 This is a schematic diagram of the structure of an oil mist separator provided in an exemplary embodiment of this application;

[0023] Figure 5 This is a cross-sectional schematic diagram of an oil mist separation component provided in an exemplary embodiment of this application;

[0024] Figure 6 This is a cross-sectional schematic diagram of an oil mist separation unit provided in an exemplary embodiment of this application;

[0025] Figure 7 This is a schematic diagram of the structure of a spray-type oil mist treatment system provided in an exemplary embodiment of this application.

[0026] In the picture:

[0027] 1A. Flow chamber; 1B. Inlet; 1C. Vortex chamber; 1D. Outlet;

[0028] 10. Oil mist separation unit; 10A. First oil mist separation unit; 10B. Second oil mist separation unit; 101. First guide portion; 1010. First guide wall; 1011. Second guide wall; 1012. End portion; 102. Second guide portion; 1020. Third guide wall; 1021. Fourth guide wall; 103. Protrusion;

[0029] 100A, Oil mist separator; 100B, Recovery unit;

[0030] 200A, Premixing device; 20, Premixing assembly; 201, Side wall; 202, Support column; 203, Premixing plate; 2031, Through hole; 21, Venturi tube; 22, Diverging section;

[0031] 300A, Spraying unit; 400A, Packing unit; 500A, Demisting unit; 600A, Water treatment unit. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0033] In the precision machining industry, machine tools such as CNC machine tools and grinding machines often use metal cutting fluids or release agents during processing. After atomization and evaporation, metal cutting fluids or release agents produce a large amount of oil mist. This oil mist not only contaminates mechanical parts, workshop walls, windows, and lighting equipment, but also endangers the health of employees. Long-term exposure to oil mist can easily lead to respiratory diseases, allergic skin diseases, and malignant tumors. If the oil mist is directly released into the air, it will also pollute the surrounding environment.

[0034] Meanwhile, the problem of oil mist generation exists in various fields, including cold-rolled steel, fiber ironing, tire engineering, chemical plants, and large restaurants.

[0035] Existing spray-type oil mist treatment systems typically use a combination of sprayers and packing materials. Generally, depending on the airflow to be cleaned, one or two sets of sprayers and packing materials are used. However, after prolonged use, contaminants can easily mix with the packing materials, causing blockages in the entire spray system. Furthermore, the packing materials have a limited lifespan, usually requiring replacement every 1 to 2 years, resulting in maintenance costs.

[0036] Based on this, an exemplary embodiment of this application provides a premixing device, which is provided with a premixing component. When the airflow to be cleaned and the liquid spiral downward along the premixing plate through the premixing device, a water film is formed on the surface of the premixing plate. In this way, the contact area between the airflow to be cleaned and the water can be increased, the airflow cleaning effect can be improved, and even if it is used for a long time, it will not cause the system to become blocked, and no maintenance is required, saving the later maintenance costs.

[0037] An exemplary embodiment of this application provides a premixing device 200A, such as... Figure 1 and 2As shown, the premixing device 200A includes a premixing component 20, a divergence section 22, and a venturi tube 21. The venturi tube 21 is located at the top of the premixing component 20, and the diverging part 22 is located at the bottom of the premixing component 20. The premixing component 20 includes a side wall 201, which encloses a premixing space. A support column 202 is provided in the premixing space. A spirally downward premixing plate 203 is provided between the side wall 201 and the support column 202. The premixing plate 203 is sealed to both the side wall 201 and the support column 202. The premixing plate 203 is provided with through holes 2031. Preferably, the premixing plate 203 is provided with a plurality of evenly arranged through holes 2031. The through holes 2031 are round holes. When the cleaning airflow and liquid pass through the premixing device 200A spirally downward along the premixing plate 203, a water film will be formed on the surface of the premixing plate 203, which can increase the contact area between the cleaning airflow and the water, so as to fully mix the gas and liquid and improve the cleaning effect.

[0038] In one embodiment, preferably, the diverging part 22 is a cone, more preferably a cylindrical cone, with its top connected to the support column 202 and its bottom diverging. When airflow and liquid pass through the diverging part 22, they will diverge outward from the center of the diverging part 22 to form an annular diverging surface.

[0039] In use, the airflow to be cleaned enters the premixing device 200A from the top of the Venturi tube 21. After passing through the Venturi tube 21, the airflow velocity increases, which can accelerate the airflow through the water film and make the gas-liquid mixture more thorough. When the airflow and liquid flow from top to bottom along the premixing plate 203 to the divergence section 22, the airflow and liquid will diverge in all directions around the divergence section 22, forming an annular divergence surface, which can increase the contact area between the airflow and the liquid.

[0040] An exemplary embodiment of this application provides a spray-type oil mist treatment system, which includes a premixing device 200A. For example... Figure 3 As shown, the spray-type oil mist treatment system can be equipped with multiple premixing devices 200A, which can be evenly arranged. Each premixing device 200A can also be fitted with a sealed cover at its top, middle, or bottom to prevent airflow from bypassing the premixing device 200A and flowing directly to the next unit. The spray-type oil mist treatment system with premixing devices 200A effectively increases the contact area between the airflow and the liquid, thereby significantly improving the cleaning effect of the airflow.

[0041] In one embodiment, such as Figure 7 As shown and referenced Figure 4 The spray-type oil mist treatment system also includes an oil mist separator 100A, which comprises oil mist separation components arranged along a preset straight line. For example... Figure 5As shown, the airflow to be cleaned enters the flow chamber 1A of the oil mist separator 100A from the inlet 1B, and removes oil mist particles from the airflow in the vortex chamber 1C of the flow chamber 1A. The cleaned airflow flows out from the outlet 1D. The oil mist separation assembly includes oil mist separation units arranged in a staggered manner.

[0042] The oil mist separation units 10 form a flow chamber 1A through which airflow passes. The flow chamber 1A includes an inlet 1B, an outlet 1D, and a vortex chamber 1C. The airflow to be cleaned enters the flow chamber 1A from the inlet 1B and forms a vortex airflow in the vortex chamber 1C. Under the action of centrifugal force, the oil mist particles in the airflow to be cleaned are thrown onto the side wall of the oil mist separation unit 10. The oil mist particles in the airflow to be cleaned collide with the inner wall of the flow chamber 1A and slide down the inner wall of the flow chamber 1A to the bottom under the action of gravity, achieving a self-cleaning effect. Even after long-term use, there is no need to clean, saving time, manpower, and water resources for cleaning and maintenance. The clean airflow flows out from the outlet 1D.

[0043] The oil mist separation unit 10 includes an arc-shaped first guide portion 101 and a second guide portion 102 disposed on the concave side of the first guide portion 101. The first guide portion 101 includes a first guide wall 1010 and a second guide wall 1011, preferably, the first guide wall 1010 and the second guide wall 1011 are mirror images of each other. The second guide portion 102 includes a third guide wall 1020 and a fourth guide wall 1021, the third guide wall 1020 and the fourth guide wall 1021 are mirror images of each other, and the shape of the third guide wall 1020 is similar to an S-shape, that is, the third guide wall 1020 includes a concave first section connected to the first guide wall 1010, an outwardly convex third section connected to the fourth guide wall 1021, and a second section connecting the first section and the third section. A concave cavity is formed between the first guide wall 1010 and the first section of the third guide wall 1020, thereby forming the first vortex chamber 1C. A concave cavity is formed between the first section of the second guide wall 1011 and the fourth guide wall 1021, thereby forming the second vortex chamber 1C.

[0044] The first guide wall 1010, the second guide wall 1011, the third guide wall 1020, and the fourth guide wall 1021 are provided with protrusions 103. The cross-sectional shape of the protrusions 103 is preferably semi-circular, but it can also be rectangular or other irregular shapes. The protrusions 103 are uniformly or unevenly distributed on the first guide wall 1010, the second guide wall 1011, the third guide wall 1020, and the fourth guide wall 1021. When the airflow to be cleaned enters the flow chamber 1A, the protrusion 103 increases the contact area between the first guide wall 1010, the second guide wall 1011, the third guide wall 1020, and the fourth guide wall 1021 and the oil mist particles in the airflow to be cleaned. This changes the collision direction between the oil mist particles in the airflow to be cleaned and the first guide wall 1010, the second guide wall 1011, the third guide wall 1020, and the fourth guide wall 1021 when they are thrown out by centrifugal force. This increases the probability of collision between the oil mist particles in the airflow to be cleaned and the first guide wall 1010, the second guide wall 1011, the third guide wall 1020, and the fourth guide wall 1021, thereby causing more oil mist particles to settle and increasing the cleaning effect.

[0045] A cylindrical end portion 1012 is provided at the ends of the first guide wall 1010 and the second guide wall 1011. While increasing the contact area between the oil mist separation unit 10 and the oil mist particles, it can also cause the airflow in the flow chamber 1A to form a split and vortex.

[0046] To facilitate spraying and allow oil mist particles to be easily cleaned from the inner wall of the oil mist separation unit 10, the oil mist separation unit 10 is made of alloy material. The alloy material of the oil mist separation unit 10 has a smooth inner wall, allowing oil mist particles to easily slide down along the inner wall under gravity. Simultaneously, a spraying device sprays high-pressure liquid onto the oil mist separation unit 10, which, under the action of the liquid, easily cleans the oil mist particles from the inner wall of the oil mist separation unit 10, achieving a self-cleaning effect. Even with prolonged use, there is no need to stop the machine to clean the oil mist separation unit 10, saving maintenance and cleaning time, as well as significant manpower and water resources.

[0047] like Figure 6As shown, the oil mist separation units 10 arranged in a staggered manner form an oil mist separation assembly. This assembly includes a first oil mist separation unit 10A and a second oil mist separation unit 10B. A flow chamber 1A is formed between the second guide wall 1011 of the first oil mist separation unit 10A and the fourth guide wall 1021 of the second oil mist separation unit 10B, and between the fourth guide wall 1021 of the first oil mist separation unit 10A and the second guide wall 1011 of the second oil mist separation unit 10B. At this time, a first vortex chamber 1C is formed in the flow chamber 1A near the connection between the fourth guide wall 1021 and the second guide wall 1011 of the second oil mist separation unit 10B; a second vortex chamber 1C is formed in the flow chamber 1A near the connection between the second guide wall 1011 and the fourth guide wall 1021 of the first oil mist separation unit 10A. The airflow to be cleaned enters the flow chamber 1A from the inlet 1B, passes through the first vortex chamber 1C and the second vortex chamber 1C respectively, and is finally discharged from the outlet 1D. When passing through the first vortex chamber 1C and the second vortex chamber 1C, due to the centrifugal force, the oil mist particles of the airflow to be cleaned are thrown onto the inner wall of the oil mist separation unit 10, thereby achieving the purpose of cleaning.

[0048] The third guide wall 1020 of the second oil mist separation unit 10B and the first guide wall 1010 of the next oil mist separation unit 10, and the first guide wall 1010 of the second oil mist separation unit 10B and the third guide wall 1020 of the next oil mist separation unit 10, form the next flow chamber 1A. The oil mist separation components arranged in sequence can form an oil mist separator 100A.

[0049] In one embodiment, such as Figure 7 As shown, the spray-type oil mist treatment system also includes a spray unit 300A, a packing unit 400A, and a demisting unit 500A. The spray unit 300A is located above the premixing device 200A, the packing unit 400A is located below the premixing device 200A, the demisting unit 500A is located at the outlet, and the oil mist separator 100A is located upstream of the demisting unit 500A. A recovery unit 100B is also located below the oil mist separator, which can recover the water used on the oil mist separator to the main body for further treatment and recycling. The airflow to be cleaned passes sequentially from the inlet through the spray unit 300A, premixing device 200A, packing unit 400A, oil mist separator 100A, and demisting unit 500A. An induced draft fan is located at the outlet, and the cleaned airflow is finally discharged from the outlet.

[0050] In one embodiment, the spray-type oil mist treatment system further includes a water treatment unit 600A, which is connected to the packing unit 400A and the spray unit 300A to allow for the recycling of the sprayed water. The sprayed water eventually falls into the main body of the system, where the water treatment unit 600A is located. The water treatment unit 600A may include a water pump or a water purification system. The purified water is then pumped back to the spray unit 300A for water recycling, thus conserving water resources.

[0051] like Figure 7 As shown in the figure, the arrows indicate the direction of airflow. The airflow to be cleaned enters the system from the inlet and passes sequentially through the spray unit 300A, the premixing device 200A, the spray unit 300A, the packing unit 400A, the oil mist separator 100A, and the demisting unit 500A. Finally, the cleaned airflow is discharged from the outlet.

[0052] This spray-type oil mist treatment system can be modularly customized to suit different usage environments and customer cleaning requirements. For example, the filler unit 400A can be omitted, and only the spray unit 300A, premixing device 200A, oil mist separator 100A, and demisting unit 500A can be installed. If higher cleanliness is required, multiple oil mist separators 100A can be installed to improve the airflow's cleaning ability. Eliminating the filler unit 400A prevents system clogging or filler replacement caused by it after prolonged use. This system requires no maintenance, saving on future maintenance costs.

[0053] In this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the article or device that includes said element.

[0054] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0055] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if these modifications and variations fall within the scope of the claims of this application and their equivalents, the intent of this application also includes these modifications and variations.

Claims

1. A spray-type oil mist treatment system, characterized in that, The device includes a premixing unit and an oil mist separator. The premixing unit includes a premixing component and a diverging part disposed at the bottom of the premixing component. The premixing component includes a sidewall that encloses a premixing space. A support column is disposed within the premixing space. A spirally downward premixing plate is disposed between the sidewall and the support column. The premixing plate has through holes. When the airflow and liquid to be cleaned spirally downward through the premixing device along the premixing plate, a water film is formed on the surface of the premixing plate, increasing the contact area between the airflow to be cleaned and the water. The diverging part is a cone; its top is connected to the support column, and its bottom is diverging. When airflow and liquid pass through the diverging part, they will diverge outward from the center of the diverging part to form a ring-shaped diverging surface. The oil mist separator includes oil mist separation components arranged along a preset straight line; the oil mist separation components include oil mist separation units arranged in a staggered manner, and the oil mist separation units form a flow chamber for airflow to pass through. The flow chamber includes an inlet, an outlet, and a vortex chamber. The airflow to be cleaned enters the flow chamber from the inlet and forms a vortex airflow in the vortex chamber. Under the action of centrifugal force, the oil mist particles in the airflow to be cleaned are thrown onto the side wall of the oil mist separation unit and slide down the inner wall of the flow chamber to the bottom under the action of gravity. The clean airflow flows out from the outlet. The oil mist separation unit includes an arc-shaped first guide portion and a second guide portion disposed on the concave side of the first guide portion. The first guide portion includes a first guide wall and a second guide wall, and the second guide portion includes a third guide wall and a fourth guide wall. The third guide wall includes a concave first section connected to the first guide wall, an outwardly convex third section connected to the fourth guide wall, and a second section connecting the first section and the third section. A concave cavity is formed between the first guide wall and the first section of the third guide wall, thereby forming a first vortex chamber. A concave cavity is formed between the first section of the second guide wall and the fourth guide wall, thereby forming a second vortex chamber; A cylindrical end portion is provided at the ends of the first guide wall and the second guide wall; The premixing device also includes a venturi tube disposed on top of the premixing component; It also includes a spray unit, a packing unit, and a demisting unit. The spray unit is located on the upper part of the premixing device, and the packing unit is located on the lower part of the premixing device. The airflow to be cleaned passes through the spray unit, the premixing device, the packing unit, the oil mist separator, and the demisting unit in sequence from the inlet, and is finally discharged from the outlet.

2. The spray-type oil mist treatment system according to claim 1, characterized in that, The premixed plate is provided with a number of through holes evenly arranged, and the through holes are round holes.

3. The spray-type oil mist treatment system according to claim 1, characterized in that, It also includes a water treatment unit that connects the packing unit and the spraying unit to allow the sprayed water to be recycled.

Images