Efficient oil-gas separation filter element with gradient precision

Abstract

The utility model discloses an efficient oil-gas separation filter element with gradient precision, and belongs to the technical field of filters. The filter element comprises an upper flange and a lower end cover which are oppositely arranged, and a filter element main body arranged between the upper flange and the lower end cover, the filter element main body comprises a pre-separation layer, a first composite separation layer, a second composite separation layer and a condensation flow guide layer which are sequentially arranged from the air inlet side to the air outlet side, a first filter cavity is formed between the pre-separation layer and the first composite separation layer, and a second filter cavity is formed between the first composite separation layer and the second composite separation layer; a third filtering cavity is formed between the second composite separation layer and the condensation flow guide layer; the filtering precision of the second composite separation layer is greater than that of the first composite separation layer. According to the utility model, by arranging the multi-stage separation layer with gradient filtration precision, the pollutant holding capacity, the separation efficiency and the separation effect of the filter element are greatly improved, the oil content of exhaust gas is effectively reduced, the compatibility to various working conditions is good, and the service life is long.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically to a high-efficiency oil-gas separation filter element with gradient precision. Background Technology

[0002] An air compressor oil-gas separator filter consists of several main parts: metal end caps, a metal support frame, sealant, and filter media. Its main function is to filter out micro-oil droplets and solid particles from the oil-gas mixture in the air compressor system, achieving the requirement of clean air. Traditional wound-wound air compressor oil-gas separator filters consist of a single-layer mesh support frame and one or two filter media with different filtration accuracies wound around the frame. This results in low filtration accuracy and small dirt-holding capacity. When the filter element is used under harsh operating conditions, heavy loads, or when the work site has high requirements for exhaust oil content, the separation efficiency of traditional wound-wound oil-gas separator filters is relatively low. This leads to the continuous accumulation of micro-particles on the filter media, clogging the filter pores, reducing separation efficiency, shortening the filter's lifespan, and causing frequent instability issues. This results in high exhaust oil content, and in severe cases, even shutdown, failing to adequately meet user requirements. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a high-efficiency oil-gas separation filter element with gradient precision. This filter element can improve the separation efficiency of the filter, reduce the oil content in the exhaust gas, and greatly extend the service life of the filter.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0005] A high-efficiency oil-gas separator filter element with gradient precision includes an upper flange and a lower end cover disposed opposite to each other, and a filter element body disposed between the upper flange and the lower end cover; the filter element body includes a pre-separation layer, a first composite separation layer, a second composite separation layer, and a condensation guide layer disposed sequentially from the air inlet side to the air outlet side; a first filtration chamber is disposed between the pre-separation layer and the first composite separation layer; a second filtration chamber is disposed between the first composite separation layer and the second composite separation layer; and a third filtration chamber is disposed between the second composite separation layer and the condensation guide layer; the filtration precision of the second composite separation layer is greater than that of the first composite separation layer.

[0006] In a preferred embodiment of the present invention, the first composite separation layer includes a first coarse filter separation layer, a first fine filter separation layer, and a first intermediate support mesh arranged sequentially from the air inlet side to the air outlet side; the second composite separation layer includes a second coarse filter separation layer, a second fine filter separation layer, and a second intermediate support mesh arranged sequentially from the air inlet side to the air outlet side.

[0007] More preferably, the filtration accuracy of the first coarse filtration layer is 13-15 μm, the filtration accuracy of the first fine filtration layer is 9-11 μm, the filtration accuracy of the second coarse filtration layer is 7-9 μm, and the filtration accuracy of the second fine filtration layer is 5-7 μm.

[0008] More preferably, the first coarse filtration separation layer, the first fine filtration separation layer, the second coarse filtration separation layer, and the second fine filtration separation layer are all glass fiber separation layers.

[0009] In a preferred embodiment of this utility model, the cross-sectional areas of the first filter chamber, the second filter chamber, and the third filter chamber decrease sequentially.

[0010] In a preferred embodiment of the present invention, the pre-separation layer includes an outer support net and pre-separation cotton, wherein the pre-separation cotton is disposed on the outside of the outer support net.

[0011] More preferably, the pre-separated cotton is made of one of the following materials: polyester fiber, polyurethane fiber, polyamide fiber, polypropylene fiber, spandex fiber, and polyester fiber.

[0012] In a preferred embodiment of this utility model, the coagulation guiding layer includes coagulation guiding cotton and an inner support net, with the coagulation guiding cotton disposed on the outside of the inner support net.

[0013] More preferably, the condensing guide cotton is made of PET.

[0014] In a preferred embodiment of this utility model, an oil storage groove is provided at the center of the lower end cover.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model's oil-gas separation filter element comprises a pre-separation layer, a first composite separation layer, a second composite separation layer, and a condensation guide layer arranged sequentially from the inlet to the outlet side. The pre-separation layer intercepts and separates large oil droplets in the oil-gas mixture, effectively reducing the load on subsequent filter media. The gradient setting of the filtration precision between the first and second composite separation layers greatly improves the filter element's separation performance while increasing its dirt-holding capacity, effectively reducing the oil content in the exhaust gas and enhancing the filter element's compatibility with various operating conditions. Furthermore, filtration chambers are provided between each separation layer and the condensation guide layer, allowing the separated and condensed large oil droplets to settle naturally by gravity, effectively reducing the load on each filter media and greatly extending the product's service life. This is beneficial for improving the product's market competitiveness and brand influence. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of the high-efficiency oil-gas separator filter element with gradient precision described in this utility model;

[0018] Explanation of reference numerals: 1. Upper flange; 2. Lower end cap; 3. Filter element body; 4. Pre-separation layer; 5. First composite separation layer; 6. Second composite separation layer; 7. Coagulation and flow guiding layer; 8. First filtration chamber; 9. Second filtration chamber; 10. Third filtration chamber; 11. Pre-separation cotton; 12. Outer support net; 13. First coarse filtration separation layer; 14. First fine filtration separation layer; 15. First intermediate support net; 16. Second coarse filtration separation layer; 17. Second fine filtration separation layer; 18. Second intermediate support net; 19. Coagulation and flow guiding cotton; 20. Inner support net. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] like Figure 1As shown, the high-efficiency oil-gas separator filter element with gradient precision provided by this utility model includes an upper flange 1 and a lower end cover 2 arranged opposite to each other, and a filter element body 3 fixedly disposed between the upper flange 1 and the lower end cover 2 by adhesive bonding. The upper flange 1 is used to suspend the product on machinery, and an outlet for discharging clean airflow is opened at the center of the upper flange 1. The lower end cover 2 is used to connect and seal the lower end face of the filter element body 3, so that airflow enters the filter element through the outside of the filter element body 3 for oil-gas separation, and finally exits through the outlet of the upper flange 1. An oil-collecting groove is integrally stamped at the center of the lower end cover 2, serving as an oil-collecting space to collect and gather oil droplets that have been condensed and separated by the filter element body 3 and naturally settled by gravity. Specifically, the filter element body 3 includes a pre-separation layer 4, a first composite separation layer 5, a second composite separation layer 6, and a condensation guide layer 7 arranged sequentially from the air inlet side to the air outlet side. By setting multiple separation layers, the filtration accuracy of the filter element for oil-gas mixtures can be improved and the oil content in the exhaust can be reduced. On the other hand, the dirt holding capacity of the filter element can be increased, thus extending the service life of the product to a certain extent. The pre-separation layer 4, the first composite separation layer 5, the second composite separation layer 6, and the condensation guide layer 7 are arranged at intervals. That is, a first filter chamber 8 is set between the pre-separation layer 4 and the first composite separation layer 5, a second filter chamber 9 is set between the first composite separation layer 5 and the second composite separation layer 6, and a third filter chamber 10 is set between the second composite separation layer 6 and the condensation guide layer 7. The first filter chamber 8, the second filter chamber 9, and the third filter chamber 10 can slow down the airflow velocity after separation by each separation layer, thereby increasing the contact area between the airflow and the filter material of each separation layer, causing the tiny oil droplets in the airflow to coalesce in the filter material, thereby achieving efficient separation of oil and gas. More preferably, the cross-sectional areas of the first filter chamber 8, the second filter chamber 9, and the third filter chamber 10 decrease sequentially. After the oil-gas mixture passes through the pre-separation layer 4, large oil droplets are intercepted and separated. At this point, the oil-gas mixture still contains a large number of tiny oil droplets. The first filter chamber 8, with the largest cross-sectional area, can effectively slow down the airflow velocity, allowing the oil-gas mixture to fully contact the first composite separation layer 5, thus ensuring that the tiny oil droplets are fully intercepted and separated. The oil content in the oil-gas mixture after passing through the first composite separation layer 5 is further reduced. Then, the airflow sequentially passes through the second filter chamber 9, the second composite separation layer 6, the third filter chamber 10, and the condensation guide layer 7. The cross-sectional areas of the second filter chamber 9 and the third filter chamber 10 decrease sequentially, which helps to increase the airflow velocity, thereby improving the separation efficiency of the oil-gas mixture. The filtration accuracy of the second composite separation layer 6 is greater than that of the first composite separation layer 5, giving the filter element a gradient filtration accuracy and good separation effect. This effectively reduces the load on each separation layer and greatly extends the service life of the product. As can be seen from the above solution, the oil-gas separation filter element of this utility model has a gradient filtration precision, which can improve the separation efficiency and separation effect of the filter, reduce the oil content in the exhaust gas, and greatly extend the service life of the filter.

[0021] Specifically, the pre-separation layer 4 includes a pre-separation cotton 11 and an outer support net 12 arranged sequentially from the outside to the inside. The pre-separation layer 4 is used to intercept and separate large oil droplets in the oil-gas mixture to reduce the load on the inner filter media layers. The outer support net 12 is bonded and fixed between the flange and the lower end cap to support the pre-separation cotton 11. The pre-separation cotton 11 is a low-precision porous filter media, which gives it a large dirt-holding capacity. Preferably, the material of the pre-separation cotton 11 is one of polyester fiber, polyurethane fiber, polyamide fiber, polypropylene fiber, spandex fiber, and polyester fiber. The first composite separation layer 5 includes a first coarse filter separation layer 13, a first fine filter separation layer 14, and a first intermediate support net 15 arranged sequentially from the air inlet side to the air outlet side. The first intermediate support net 15 is bonded and fixed between the upper flange 1 and the lower end cover 2 to support the first coarse filter separation layer 13 and the first fine filter separation layer 14. Similarly, the second composite separation layer 6 includes a second coarse filter separation layer 16, a second fine filter separation layer 17, and a second intermediate support net 18 arranged sequentially from the air inlet side to the air outlet side. More specifically, the filtration accuracy of the first coarse filter separation layer 13 is 13-15 μm, the filtration accuracy of the first fine filter separation layer 14 is 9-11 μm, the filtration accuracy of the second coarse filter separation layer 16 is 7-9 μm, and the filtration accuracy of the second fine filter separation layer 17 is 5-7 μm. Through the multi-stage separation layers with increasing filtration accuracy, the fine oil droplets remaining in the pre-separation layer 4 are finely separated, ensuring an effective reduction in the oil content of the exhaust gas after separation by the multi-stage separation layers. Preferably, the first coarse filtration separation layer 13, the first fine filtration separation layer 14, the second coarse filtration separation layer 16, and the second fine filtration separation layer 17 are all glass fiber separation layers. The condensation and guiding layer 7 includes condensation and guiding cotton 19 and an inner support net 20. The condensation and guiding cotton 19 is disposed on the outside of the inner support net 20 and is used to capture oil droplets that are condensed and separated from the second composite separation layer 6 and blown towards the inside of the filter element body 3 by the airflow. After being captured, the oil droplets settle and are guided by gravity to the oil storage groove of the lower end cover 2, so that the oil droplets can be sucked away by the oil return pipe for reuse. Preferably, the condensation and guiding cotton 19 is made of PET.

[0022] In summary, the oil-gas separation filter element of this utility model, through the setting of a multi-stage separation layer with a filtration accuracy gradient, greatly improves the separation performance of the filter element while increasing the dirt holding capacity, effectively reducing the oil content in the exhaust gas, improving the compatibility of the filter element with various working conditions, and greatly extending the service life of the product, which is conducive to improving the product's market competitiveness and brand influence.

[0023] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A high efficiency oil and gas separation cartridge with gradient accuracy, characterized in that: The filter includes an upper flange and a lower end cover arranged opposite to each other, and a filter element body disposed between the upper flange and the lower end cover; the filter element body includes a pre-separation layer, a first composite separation layer, a second composite separation layer, and a condensation guide layer arranged sequentially from the air inlet side to the air outlet side; a first filtration chamber is disposed between the pre-separation layer and the first composite separation layer; a second filtration chamber is disposed between the first composite separation layer and the second composite separation layer; and a third filtration chamber is disposed between the second composite separation layer and the condensation guide layer; the filtration accuracy of the second composite separation layer is greater than that of the first composite separation layer.

2. The high efficiency oil-aerosol separating filter element with gradient precision of claim 1, wherein: The first composite separation layer includes a first coarse filter separation layer, a first fine filter separation layer, and a first intermediate support mesh arranged sequentially from the air inlet side to the air outlet side; the second composite separation layer includes a second coarse filter separation layer, a second fine filter separation layer, and a second intermediate support mesh arranged sequentially from the air inlet side to the air outlet side.

3. The high efficiency oil-aerosol separating filter element with gradient precision of claim 2, wherein: The filtration accuracy of the first coarse filtration separation layer is 13~15μm, and the filtration accuracy of the first fine filtration separation layer is 9~11μm; the filtration accuracy of the second coarse filtration separation layer is 7~9μm, and the filtration accuracy of the second fine filtration separation layer is 5~7μm.

4. The high-efficiency oil and gas separation filter element with gradient precision according to claim 2 or 3, characterized in that: The first coarse filtration separation layer, the first fine filtration separation layer, the second coarse filtration separation layer, and the second fine filtration separation layer are all glass fiber separation layers.

5. The high-efficiency oil-gas separator filter element with gradient precision according to any one of claims 1 to 3, characterized in that: The cross-sectional areas of the first filter chamber, the second filter chamber, and the third filter chamber decrease sequentially.

6. The high efficiency oil and air separation filter element with graduated precision of any one of claims 1-3, wherein: The pre-separation layer includes an outer support net and pre-separation cotton, with the pre-separation cotton disposed on the outside of the outer support net.

7. The high efficiency oil-aerosol separating filter element with graduated precision of claim 6, wherein: The pre-separated cotton is made of one of the following materials: polyester fiber, polyurethane fiber, polyamide fiber, polypropylene fiber, spandex fiber, or polyester fiber.

8. The high efficiency oil-aerosol separating filter element with graduated precision of claim 6, wherein: The condensation guiding layer includes condensation guiding cotton and an inner support net, with the condensation guiding cotton disposed on the outside of the inner support net.

9. The high efficiency oil-aerosol separating filter element with graduated precision of claim 8, wherein: The condensed flow-guiding cotton is made of PET.

10. The high-efficiency oil-gas separator filter element with gradient precision according to any one of claims 1 to 3, characterized in that: An oil storage groove is provided at the center of the lower end cap.

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