Grease fractionation filter

Abstract

The utility model relates to the field of grease fractionation filters, and particularly discloses a grease fractionation filter which comprises a filter body, the filter body comprises a shell, a filter cylinder and an automatic scraper device, a feed pipe with an eccentric structure is arranged on the side wall of the shell, a discharge pipe is arranged at the bottom of the shell, a control valve is mounted on the feed pipe, and a control valve is mounted on the discharge pipe. The top of the filter cylinder body is provided with a supporting part, the automatic scraper device is arranged on the outer side of the filter cylinder body, and the automatic scraper device comprises a top cover, a bottom plate and a plurality of scrapers arranged between the top cover and the bottom plate. The scraper blade is pushed to rotate under the pushing force of liquid mixed oil, so that the phenomenon that fat crystals block filtering holes in the filtering cylinder body in the filtering process can be efficiently prevented, the filtering performance of the filter body is improved, the separation effect of the liquid oil and the fat crystals is enhanced, and the purity of the liquid oil discharged from the discharging pipe is improved.

Description

Technical Field

[0001] This utility model relates to the field of filters for oil and fat separation, specifically an oil and fat separation filter. Background Technology

[0002] Oil fractionation is a process of classifying various triglycerides based on differences in the solubility or melting point of their components at different temperatures. Currently, the main methods for oil fractionation include dry fractionation, solvent fractionation, and surfactant fractionation. Dry fractionation is currently the most widely used method. Dry fractionation aligns with China's green and low-carbon development philosophy, is simple to operate, and allows for timely adjustments to the process to address any issues that arise during production. During the cooling crystallization process, by adjusting the cooling temperature, cooling rate, crystallization time, stirring speed, conveying and separation methods, and oil quality, solid lipid crystals with tight molecular arrangement, good stability, and easy filtration can be obtained.

[0003] However, in actual production, many tiny lipid crystals are often generated due to factors such as oil composition, production equipment, and operating methods. These lipid crystals pass through the filter cloth of the filter press, mix with the liquid oil, and enter the temporary storage tank, causing a decline in the product quality and low-temperature storage performance of the liquid oil. Utility Model Content

[0004] The purpose of this invention is to provide an oil separation filter that aims to solve the problem of residual grease crystals in the liquid oil obtained by oil separation and pressure filtration. The device has a simple structure, is easy to operate, and has high filtration efficiency.

[0005] To solve the above-mentioned technical problems, this utility model provides an oil separation filter, including a filter body, which includes a shell, a filter cylinder, and an automatic scraper device. The shell has an eccentrically structured feed pipe on its side wall and a discharge pipe at its bottom. A control valve is installed on the feed pipe. The inner bottom wall of the shell has a perforated bottom plate with a mounting groove. The lower end of the filter cylinder is embedded in the mounting groove. The inner bottom surface of the mounting groove has several filter holes communicating with the discharge pipe. The side wall of the filter cylinder has several filter holes. The filter cylinder has through holes communicating with the filter holes. The top of the filter cylinder has a support part.

[0006] The automatic scraper device is located on the outside of the filter cylinder. The automatic scraper device includes a top cover, a bottom plate, and several scrapers disposed between the top cover and the bottom plate. The bottom of the top cover is provided with a support shaft that passes through the support part and is rotatably connected thereto. The top of the top cover is provided with a handle. There is a gap between the bottom of the bottom plate and the inner bottom wall of the housing. The scrapers rotate around the filter cylinder under the push of the liquid mixed oil entering through the feed pipe to scrape off the grease crystals intercepted on the filter holes.

[0007] Furthermore, each of the scrapers forms a 45° angle with the outer tangent of the filter cylinder.

[0008] Furthermore, a cleaning brush is provided between each scraper and the filter cylinder, and the cleaning brush is installed on the inner side of the scraper.

[0009] Furthermore, the support part is a tapered roller bearing, which is fixed to the top of the filter cylinder by welding, and the support shaft passes through the tapered roller bearing.

[0010] Furthermore, a filter cloth is provided on the outer side of the filter cylinder.

[0011] Furthermore, a filter screen is provided on the inner bottom surface of the mounting groove.

[0012] Furthermore, the feed pipe is inclinedly disposed on the side wall of the housing.

[0013] Furthermore, the outer wall of the feed pipe is wrapped with insulating cotton for cold preservation, or a cooling circulating water pipe is connected to the outside.

[0014] Furthermore, the control valve can be any one of a manual valve, a ball valve, or a pneumatic valve.

[0015] Furthermore, a sealing ring is provided between the mounting groove and the filter cylinder.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model of an oil separation filter has a simple structure and is easy to operate. It has the advantages of high filtration efficiency, good separation effect, convenient disassembly, and easy cleaning. It can solve the problem of residual grease crystals in the liquid oil obtained by current oil separation and pressure filtration. Through the design of the automatic scraper device, support part, and support shaft, combined with the eccentric structure of the feed pipe, the scraper rotates under the thrust of the liquid mixed oil, which can effectively prevent the phenomenon of grease crystals clogging the filter holes on the filter cylinder during the filtration process, improve the filtration performance of the filter body itself, enhance the separation effect of liquid oil and grease crystals, and improve the purity of the liquid oil coming out of the discharge pipe. In addition, the handle design makes it easy to lift out the automatic scraper device and clean the grease crystals deposited on the bottom plate in time, which improves the service life of the filter body and makes cleaning more convenient. Furthermore, the flow rate is controlled by the control valve on the feed pipe to prevent the top cover from being lifted and causing material loss, ensuring the normal use of the filter body.

[0018] 2. This utility model, by designing that each scraper forms a 45° angle with the outer tangent of the filter cylinder, allows the scraper to rotate around the filter cylinder under the driving force of the liquid mixed oil. This can better reduce the amount of grease crystals adhering to the surface of the filter cylinder, eliminate the phenomenon of filter holes being blocked, and greatly improve the filtration effect of the filter body.

[0019] 3. This utility model uses an inclined feed pipe design to form a certain angle with the horizontal plane to provide gravitational potential energy for the liquid oil, which facilitates its entry into the housing and impact on the scraper surface. This converts most of the gravitational potential energy into kinetic energy, causing the scraper to rotate under the driving force of the mixed oil and scrape off the intercepted grease crystals. In addition, when using a filter press to press and separate oil, it can also avoid the problem of low oil output and grease crystal residue at the oil outlet of the filter press in the later stage of filtration. Attached Figure Description

[0020] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the oil separation filter of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the oil separation filter of this utility model;

[0023] Figure 3 This is an exploded view of the oil separation filter of this utility model;

[0024] In the diagram: 1-Filter body, 11-Housing, 12-Filter cylinder, 13-Automatic scraper device, 14-Perforated bottom plate, 111-Infeed pipe, 112-Outfeed pipe, 121-Filter hole, 131-Top cover, 132-Bottom plate, 133-Scraper, 134-Support shaft, 135-Handle, 136-Tap roller bearing, 141-Filter hole. Detailed Implementation

[0025] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] In one specific embodiment of this utility model, such as Figure 1-3 As shown, an oil separation filter includes a filter body 1, which includes a housing 11, a filter cylinder 12, and an automatic scraper device 13. The housing 11 has an eccentric feed pipe 111 on its side wall and a discharge pipe 112 at its bottom. A control valve is installed on the feed pipe 111. The inner bottom wall of the housing 11 has a perforated bottom plate 14 with a mounting groove. The lower end of the filter cylinder 12 is embedded in the mounting groove. The inner bottom surface of the mounting groove has a plurality of filter holes 141 communicating with the discharge pipe 112. The side wall of the filter cylinder 12 has a plurality of filter holes 121. The filter cylinder 12 has a through hole communicating with the plurality of filter holes 121. The through hole communicates with the filter holes 141. The top of the filter cylinder 12 has a support part.

[0027] An automatic scraper device 13 is disposed on the outside of the filter cylinder 12. The automatic scraper device 13 includes a top cover 131, a bottom plate 132, and several scrapers 133 disposed between the top cover 131 and the bottom plate 132. The bottom of the top cover 131 is provided with a support shaft 134 that passes through the support part and is rotatably connected thereto. The top of the top cover 131 is provided with a handle 135. There is a gap between the bottom of the bottom plate 132 and the inner bottom wall of the housing 11. The scrapers 133 rotate around the filter cylinder 12 under the push of the liquid mixed oil entering through the feed pipe 111, scraping off the grease crystals intercepted on the filter holes 121.

[0028] This utility model of an oil separation filter features a simple structure and easy operation, offering advantages such as high filtration efficiency, good separation effect, convenient disassembly, and easy cleaning. It solves the problem of residual grease crystals in the liquid oil obtained from current oil separation and pressure filtration methods. Through the design of the automatic scraper device, support section, and support shaft, combined with the eccentric structure of the feed pipe, the scraper rotates under the thrust of the liquid mixed oil, effectively preventing grease crystals from clogging the filter holes on the filter cylinder during filtration. This improves the filter's own filtration performance, enhances the separation effect between liquid oil and grease crystals, and increases the purity of the liquid oil exiting the discharge pipe. Furthermore, the handle design facilitates the removal of the automatic scraper device for timely cleaning of grease crystals deposited on the bottom plate, extending the filter's service life and making cleaning more convenient. Additionally, a control valve on the feed pipe controls the flow rate, preventing the top cover from being lifted and causing material loss, ensuring the normal operation of the filter.

[0029] Specifically, in this embodiment, each scraper 133 forms a 45° angle with the outer tangent of the filter cylinder 12. The scraper rotates around the filter cylinder under the driving force of the liquid mixed oil, which can better reduce the amount of grease crystals adhering to the surface of the filter cylinder, prevent the filter holes from being blocked, and greatly improve the filtration effect of the filter body.

[0030] Specifically, in this embodiment, the support part is a tapered roller bearing 136. The tapered roller bearing 136 is fixed to the top of the filter cylinder 12 by welding. The support shaft 134 passes through the tapered roller bearing 136. Through the design of the tapered roller bearing, it can withstand the axial load from the automatic scraper device well and improve the stable operation of the support shaft.

[0031] Specifically, in this embodiment, a filter screen (not shown in the figure) is provided on the inner bottom surface of the mounting groove, which can prevent grease crystals from falling directly into the discharge port when the automatic scraper device is used for cleaning, thus improving cleaning convenience. Furthermore, the design of the lower end of the filter cylinder being embedded in the mounting groove improves the stability of the filter body. Of course, in other embodiments, a sealing ring can be provided between the mounting groove and the filter cylinder 12 as needed, such as a sealing ring made of acrylic rubber, polytetrafluoroethylene, or other materials. These materials have certain oil resistance and corrosion resistance properties. The sealing ring should have a groove to tightly wrap the bottom of the filter cylinder, improving the stability of the filter cylinder during operation.

[0032] Specifically, in this embodiment, both the filter cylinder 12 and the handle are made of 316 stainless steel, which is not easily corroded or worn, reducing malfunctions and increasing service life. The pore size on the filter cylinder can be customized according to the size of the grease crystals leaking out after different oil separation and pressure filtration processes, resulting in a uniform pore distribution. In other embodiments, depending on the particle size of the residual grease crystals, a filter cloth can be custom-fitted onto the outside of the filter cylinder 12, enabling precise interception of specific grease crystals and improving filtration efficiency.

[0033] Specifically, the feed pipe 111 is inclinedly arranged on the side wall of the shell 11, and can be directly connected to the oil outlet of the diaphragm filter press (hereinafter referred to as the filter press) used in the oil separation production process. Here, through the inclined design of the feed pipe, it can form a certain angle with the horizontal plane to provide gravitational potential energy for the liquid oil. Combined with the eccentric connection between the feed pipe and the shell, most of the material impacts the scraper surface, and a small part flows to the filter cylinder surface, which can convert most of the gravitational potential energy into kinetic energy. The scraper rotates around the tapered roller bearing under the pushing force of the material, so that the scraper rotates under the pushing force of the mixed oil and scrapes off the intercepted grease crystals. In addition, when using the filter press to press and separate oil, it can also avoid the problem of low oil output in the later stage of filtration and easy residue of grease crystals in the oil inlet pipe.

[0034] In this embodiment, the control valve can be any one of a manual valve, ball valve, or pneumatic valve. Specifically, in the early stage of feeding, the flow rate is appropriately reduced by the control valve to prevent the top cover from being lifted and causing material loss. In the later stage of feeding, as the liquid oil decreases, grease crystals are more likely to remain on the pipe wall. At this time, the valve can be adjusted to its minimum to accumulate liquid oil. When the filter press section ends, the valve can be opened again to improve filtration efficiency and enhance the quality of the liquid oil. Of course, the position of the feed pipe is designed to be lower than the height of the top cover to reduce the risk of the top cover being lifted during feeding.

[0035] In addition, the outer wall of the feed pipe 111 can be wrapped with insulation cotton for cold preservation to prevent the melted grease crystals from mixing with the liquid oil and entering the temporary storage tank, which would reduce the product quality and low-temperature storage performance of the liquid oil; or the outer side can be connected to a cooling circulating water pipe, which can be connected to the cooling circulating water of the diaphragm filter press system. During the pre-cooling stage of the filter press, the feed pipe can also be pre-cooled and cooled at the same time, improving energy utilization efficiency while preventing the melted grease crystals from mixing with the liquid oil and entering the temporary storage tank.

[0036] In other embodiments, each scraper 133 is provided with a cleaning brush between itself and the filter housing 12, and the cleaning brush is installed on the inner side of the scraper 133. Of course, if there is no filter cloth design on the outside of the filter housing, a stainless steel brush can be used to intercept grease crystals and clean the pores, thereby improving the filtration and separation effect.

[0037] The working principle of this utility model is as follows:

[0038] When the feed pipe 111 is at the same level as the oil outlet of the diaphragm filter press (hereinafter referred to as the filter press), the pump is used to transport the liquid mixed oil (here referring to the mixture of liquid oil and grease crystals), and the flow rate is adjusted by the control valve.

[0039] When the feed pipe 111 is inclined and not on the same horizontal plane as the oil outlet, it possesses a certain gravitational potential energy. Alternatively, it can be directly installed below the diaphragm filter press to provide more gravitational potential energy for the feed, saving factory space, improving the vertical utilization rate of the production workshop, and utilizing gravitational potential energy to convert it into kinetic energy. Combined with valves for flow control, the mixed oil enters the housing under the action of gravitational potential energy, causing the scraper to rotate under the driving force of the liquid mixed oil. Compared to the pumping method mentioned above, this solution saves more energy and reduces production costs.

[0040] Specifically, the liquid mixed oil entering from the feed pipe 111 flows to the filter cylinder 12 and the scraper 133. The scraper 133 rotates under the push of the liquid mixed oil. The grease crystals are intercepted by the filter holes 121 on the filter cylinder 12 and scraped off by the scraper 133, accumulating on the bottom plate 132. At the same time, the liquid oil entering the filter holes 121 passes through the through holes in the filter cylinder 12 and through the filter holes 141, and finally flows out from the discharge pipe 112 to the liquid oil temporary storage tank. After filtration is completed, the automatic scraper device can be lifted out by the handle to clean the grease crystals deposited on the bottom plate in time and transfer them to the solid oil temporary storage tank.

[0041] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An oil separation filter, characterized in that, The filter includes a filter body (1), which comprises a housing (11), a filter cylinder (12), and an automatic scraper device (13). The housing (11) has an eccentrically shaped feed pipe (111) on its side wall and a discharge pipe (112) at its bottom. A control valve is installed on the feed pipe (111). A perforated bottom plate (14) is provided on the inner bottom wall of the housing (11), and an installation groove is provided on the perforated bottom plate (14). The lower end of the cylinder (12) is embedded in the mounting groove. The inner bottom surface of the mounting groove is provided with a plurality of filter holes (141) communicating with the discharge pipe (112). The side wall of the filter cylinder (12) is provided with a plurality of filter holes (121). The filter cylinder (12) is provided with a through hole communicating with a plurality of filter holes (121). The through hole communicates with the filter holes (141). The top of the filter cylinder (12) is provided with a support part. The automatic scraper device (13) is located on the outside of the filter cylinder (12). The automatic scraper device (13) includes a top cover (131), a bottom plate (132), and several scrapers (133) located between the top cover (131) and the bottom plate (132). The bottom of the top cover (131) is provided with a support shaft (134) that passes through the support part and is rotatably connected thereto. The top of the top cover (131) is provided with a handle (135). There is a gap between the bottom of the bottom plate (132) and the inner bottom wall of the housing (11). The scraper (133) rotates around the filter cylinder (12) under the push of the liquid mixed oil entering through the feed pipe (111) to scrape off the grease crystals intercepted on the filter holes (121).

2. The oil separation filter according to claim 1, characterized in that, Each of the scrapers (133) forms a 45° angle with the outer tangent of the filter cylinder (12).

3. The oil separation filter according to claim 1, characterized in that, A cleaning brush is provided between each scraper (133) and the filter cylinder (12), and the cleaning brush is installed on the inner side of the scraper (133).

4. The oil separation filter according to claim 1, characterized in that, The support part is a tapered roller bearing (136), which is fixed to the top of the filter cylinder (12) by welding, and the support shaft (134) passes through the tapered roller bearing (136).

5. The oil separation filter according to claim 1, characterized in that, The filter cylinder (12) is provided with filter cloth on its outer side.

6. The oil separation filter according to claim 1, characterized in that, A filter screen is provided on the inner bottom surface of the mounting groove.

7. The oil separation filter according to claim 1, characterized in that, The feed pipe (111) is inclinedly disposed on the side wall of the housing (11).

8. The oil separation filter according to claim 1, characterized in that, The outer wall of the feed pipe (111) is wrapped with insulating cotton for cold preservation, or a cooling circulating water pipe is connected to the outside.

9. The oil separation filter according to claim 1, characterized in that, The control valve can be any one of a manual valve, a ball valve, or a pneumatic valve.

10. The oil separation filter according to claim 1, characterized in that, A sealing ring is provided between the mounting groove and the filter cylinder (12).

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