Soybean oil refining device with filtering function

Abstract

The invention discloses a soybean oil refining device with a filtering function, and relates to the technical field of soybean oil refining. The soybean oil refining device with the filtering function comprises a filter plate piece, one end of the filter plate piece extends into a transition box, one end of the filter plate piece is connected with a plug body piece through a connecting piece, the connecting piece is communicated with a draught fan through an air distribution pipe, and the connecting piece is used for controlling connection between the connecting piece and the plug body piece and adjusting air pressure in the plug body piece; partition plates are connected to the inner wall of the partition box, each partition plate is connected with an insertion plate through a first spring, and the plug body piece is used for stretching out and drawing back under the air pressure effect and completing sealing of the hole channels. According to the soybean oil refining device with the filtering function, connection or separation of the filter plate piece and the plug body piece is controlled through the connecting piece, when the filter plate piece is pulled out, the plug body piece stays in the hole channel and seals the hole channel after being separated from the connecting piece, and the telescopic section is switched between the expansion state and the initial state and is matched with the multi-scene process of sealing and moving.

Description

Technical Field

[0001] The invention relates to the technical field of soybean oil refining, in particular to a soybean oil refining device with a filtering function. Background Art

[0002] Soybean oil refining refers to the process of removing impurities such as phospholipids, free fatty acids, pigments, odorous substances, metal ions, etc. from crude soybean oil through physical or chemical methods to make it meet the standards for edible oil or industrial oils. Soybean oil refining usually includes four major steps: degumming, alkali refining (deacidification), decolorization, and deodorization. In the decolorization stage, the porous structure of the adsorbent (such as activated white clay, activated carbon, attapulgite, etc.) is used to adsorb the pigment. The decolorized solution is then introduced into a filtration device, and the adsorbent is removed through a frame filter to obtain decolorized oil.

[0003] Referring to Chinese Patent Publication No.: CN117987206A, a soybean oil refining device with a filtering function belongs to the field of soybean oil refining technology, including a refining box, a crude oil inlet pipe fixedly installed in the refining box, a crude oil outlet pipe fixedly installed on the refining box, a shaft sleeve rotatably installed in the crude oil inlet pipe, one end of the shaft sleeve passes through the crude oil inlet pipe and is fixedly installed with a stirrer, an element tank is provided at the bottom of the refining box, a magnetic stirring assembly is fixedly installed in the element tank, and also includes: a filter assembly, which is slidably mounted on the crude oil inlet pipe.

[0004] The frame filter pressurizes the decolorized oil to pass through the filter cloth, while the adsorbents such as activated clay and activated carbon are retained on the surface of the filter cloth to form filter residue. As the filtration proceeds, the filter residue gradually thickens. During continuous production, the filter cloth of the frame filter press needs to be cleaned every 12 hours or so. The cleaning frequency is high. If the filter residue is tightly adhered or the pores of the filter cloth are blocked by fine activated carbon particles, in order to ensure the sealing, it is usually necessary to empty the oil in the kettle after another refining cycle before opening the top cover, lifting the filter plate out and replacing it. The filter plate cannot be replaced during the refining process. Alternatively, a transfer box can be set on one side of the kettle, and the filter plate can be pulled out horizontally into the transfer box and cleaned. In order to ensure the sealing effect and reduce the number of filter plates pulled out, the filter plate can be removed. In order to prevent the leakage of solution in the kettle body, a sealing plug needs to be set at one end of the filter plate. However, the filter plate and the sealing plug are fixed as a whole, and the sealing plug needs to be moved to adapt to the inner wall of the outlet for sealing. Each time the sealing plug will produce obvious friction with the inner wall of the outlet, the sealing plug is easy to be damaged, and the sealing performance is difficult to guarantee; in order to ensure the sealing effect, the inner diameter of one end of the sealing groove at the outlet is smaller than the diameter of the sealing plug. When the sealing plug is installed or removed, the sealing plug will produce obvious squeezing with the sealing groove. After repeated use, the sealing plug is prone to irreversible slight deformation, and a gap will appear between the sealing plug and the sealing groove. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a soybean oil refining device with a filtering function, which controls the connection or separation of the filter plate and the plug body through a connecting piece. When the filter plate is pulled out, the plug body separates from the connecting piece and remains in the channel to seal the channel. The telescopic section switches between the expanded state and the initial state, adapting to multiple scenarios of sealing and movement.

[0006] Technical solution: To achieve the above objectives, the present invention is implemented through the following technical solution: a soybean oil refining device with a filtering function, comprising: a plurality of channels equidistantly opened through the side of the filter furnace, the inner wall of each of the channels being connected to a sealing tube and a filter plate, one end of the filter plate passing through the sealing tube and extending into a transition box, one end of the filter plate being connected to the plug body through a connecting piece, the connecting piece being connected to the fan through an air distribution pipe, the connecting piece being used to control its connection with the plug body under the action of gas and to adjust the air pressure in the plug body, the connecting piece comprising: a partition box, the partition box being connected to the air distribution pipe, the inner wall of the partition box being connected to two symmetrically distributed partitions, each of the partitions being connected to a plug plate on one side through a first spring, an air hole being opened through one side of the partition box, the partition being connected to a push rod and one end of the push rod passing through the air hole, the plug body being used to expand and contract under the action of air pressure and complete the sealing of the channel.

[0007] Preferably, the filter plate is configured to filter impurities in the oil body after decolorization, and the filter plate comprises: a frame plate, the frame plate is arranged in the filter furnace, filter cloths are connected to both sides of the frame plate, and end plugs and plug parts are respectively connected at both ends of the frame plate, the end plug is prism-shaped, one side of the end plug is connected to an electromagnetic flowmeter through a liquid guide box, one side of the liquid guide box is connected to a hydraulic cylinder, the filter furnace is connected to the decolorization furnace, an alkali refining furnace and a decolorization furnace are arranged on one side of each decolorization furnace, the decolorization furnace is located between the alkali refining furnace and the deodorization furnace, a bottom valve is connected to the bottom of the filter furnace, several filter plates are equidistantly distributed along the axial direction of the filter furnace, the transition box is used to accommodate the filter plates taken out of the filter furnace, and the end plugs and plug parts are symmetrically distributed.

[0008] 18. The ventilator as claimed in claim 17, wherein the air intake opening is a hole formed in the air intake passage and the air outlet opening is a hole formed in the air intake passage. The air intake opening is a hole formed in the air intake passage and the air outlet opening is a hole formed in the air intake passage. The end block is provided with a socket on the side close to the plug plate, the end block is connected to a telescopic section through a fixed section, one end of the telescopic section is connected to a plate body, the inner wall of the middle part of the telescopic section is connected to two cavity plates, an air cavity is provided between the two cavity plates, the inner wall of the fixed section is connected to a second connecting plate, a second air inlet hole is provided through the side of the fixed section close to the end block, an air inlet strip is provided through the side of the cavity plate close to the end block, a pressure sealing plate is provided on the side of the second air inlet away from the end block, and the pressure sealing plate is connected to the second spring A second connecting plate is connected, and the second connecting plate is connected to the inner wall of the fixed section. The air cavity is connected to the air delivery cavity through the second air inlet hole. The air outlet of the fan is connected to a first air box. A plurality of air outlet holes are opened on one side of the first air box. Each of the air outlet holes is connected to an air branch pipe. A baffle plate is connected to the inner wall of the first air box. The baffle plate is used to seal the plurality of air outlet holes during rotation and connect one air outlet hole to the air branch pipe. One side of the baffle plate is connected to a stepper motor through a rotating shaft.

[0009] Preferably, the filter plate assembly further includes: an extension tube, one end of the extension tube is connected to the frame plate, the other end of the extension tube is connected to the liquid guide box through an end plug body, one side of the liquid guide box is connected to a driving plate, the other side of the liquid guide box is connected to the electromagnetic flowmeter, and the end plug body is made of fluororubber.

[0010] Preferably, the cross-sectional area of ​​the end plug body close to the frame plate is smaller than the cross-sectional area of ​​the end plug body away from the frame plate, the cross-sectional area of ​​the inner wall of the sealing tube is larger than the cross-sectional area of ​​the end plug body close to the frame plate, and the cross-sectional area of ​​the inner wall of the sealing tube is smaller than the cross-sectional area of ​​the end plug body away from the frame plate.

[0011] Preferably, the liquid guide box includes: an upper plate, the upper plate is located on one side of the end plug body, the upper plate is connected to the lower plate through a vertical plate, a first side plate and a second side plate are arranged between the upper plate and the lower plate, the side of the upper plate close to the lower plate is respectively connected to the two ends of the first side plate and the two ends of the second side plate, a liquid outlet hole is opened through the bottom of the inner wall of the first side plate, the liquid outlet hole is connected to a liquid outlet pipe, and the liquid outlet pipe is connected to a second pipe through an electromagnetic flowmeter.

[0012] Preferably, the length of the second side plate is smaller than that of the first side plate, the upper plate is a flat plate, the lower plate is an inclined plate, and the angle between the inclined plate and the horizontal plane is 40°-45°.

[0013] Preferably, when the filter plate is pulled out from the filter furnace, the filter plate drives the connecting piece and the plug body to move. When the filter plate is pulled out from the filter furnace, the plug body is located in the channel, the fan is started, and the pneumatic plate squeezes the first spring under the action of wind pressure, the plug plate is pulled out from the socket, the connecting piece is separated from the plug body, the push rod squeezes the pressure seam plate, the wind cavity is filled with air, the middle part of the telescopic end expands and abuts against the channel for sealing, the filter plate and the filter plate are pulled out, the push rod is away from the pressure seam plate, and the pressure seam plate seals the second air inlet under the action of elasticity. After replacing the filter plate, the connecting piece abuts against the plug body, the fan is turned off, the wind cavity is deflated, the pressure seam plate recovers under the action of elasticity, and the plug plate is plugged into the socket under the elastic push of the first spring.

[0014] Beneficial effects: The present invention provides a soybean oil refining device with a filtering function. Compared with the prior art, it has the following beneficial effects: 1. By using wind as the only power source, it will not affect the movement of the filter plate and the plug body, and the movement of the connector plug plate can be controlled by wind pressure. The connection or separation of the filter plate and the plug body can be controlled by the connector. Wind can also be used as a power to control the outward expansion of the telescopic section, and the opening and closing of the channel can be controlled by the telescopic section. When the filter plate is pulled out, the plug body stays in the channel and seals the channel. When the plug body is installed for the first time and when it is removed, the plug body does not expand and the plug body will not be squeezed with the inner wall of the channel, which facilitates the installation and removal of the plug body and reduces the possibility of wear of the plug body during movement. When the connector and the plug body are in contact, the position of the sealing plate can be controlled by the push rod to adjust the wind pressure in the air cavity and switch the telescopic section between the expanded state and the initial state.

[0015] 2. A transition box is used to create a space for accommodating the removed filter plates and isolating the filter furnace from the outside environment during their movement. After the filter plates are moved, the sealing tube is sealed using an end plug or plug body, resulting in a simple and efficient sealing structure.

[0016] 3. A sealing device is directly set between the filter furnace and the transition box, which requires adding power or manual closing. Each time the filter plate is taken out and placed, it needs to be controlled once, which is too cumbersome or increases the cost. By setting symmetrical end plugs and plug parts at both ends of the frame plate, the end plugs and plug parts are both pyramidal, and the gradual cross-sectional area of ​​the end plugs is utilized to facilitate the end plugs and plug parts to be sealed with the sealing tube during movement, the structure is simple and the sealing effect is good.

[0017] 4. Several filter plates are placed horizontally. The flow attenuation rate of each filter plate is different, and the replacement time of each filter plate is different, creating a time difference for replacement. Only one or a few filter plates are taken out each time, which is highly targeted and allows all filter plates to be replaced in sequence. When a part of the filter plates are replaced, the other filter plates continue to work to ensure continuous production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present application and, together with the description, further serve to explain the principles of the present application and enable those skilled in the relevant art to make and use the present application.

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 This is a structural diagram of the part where the filter furnace is located.

[0022] Figure 3 This is a diagram showing the separation of the filter furnace and the side panel.

[0023] Figure 4 This is a structural diagram of the part where the side panel is located.

[0024] Figure 5 It is a structural diagram of the side panels, arc panels and door panels.

[0025] Figure 6 It is a structural diagram of the hydraulic cylinder, the part where the fan is located, and the part where the filter cloth is located.

[0026] Figure 7 Schematic diagram of the structure of the wind control component.

[0027] Figure 8 It is a structural diagram of the liquid guide box.

[0028] Figure 9 It is a structural diagram of the filter plate, connecting parts and plug body.

[0029] Figure 10 This is a diagram showing the separation of the filter plate, the connector portion, and the plug body.

[0030] Figure 11 It is a top view of the connecting piece and the plug body.

[0031] Figure 12 This is an exploded view of the connector.

[0032] Figure 13 It is a structural diagram of the plug body.

[0033] The reference numerals in the figure are: 11, alkali refining furnace; 12, bleaching furnace; 13, deodorizing furnace; 14, filtering furnace; 2, transition box; 21, arc plate; 22, first connecting plate; 23, discharge hole; 24, side plate; 25, sealing strip; 26, door panel; 3, air control member; 31, fan; 32, stepping motor; 33, rotating shaft; 34, baffle plate; 35, first air box; 36, air outlet; 37, air distribution pipe; 4, filter plate; 41, frame plate; 42, filter cloth; 43, extension pipe; 44, end plug; 45, sealing pipe; 46, electromagnetic flowmeter; 5, connecting member; 51, second air box; 52, partition box; 53, partition; 54, first spring; 55, pneumatic plate; 56, shift rod; 57 , plug plate; 58, sealing ring; 59, push rod; 6, liquid guide box; 61, upper plate; 62, lower plate; 63, first side plate; 64, second side plate; 65, liquid outlet; 66, liquid outlet pipe; 67, vertical plate; 71, channel; 72, bottom valve; 73, solenoid valve; 74, first pipeline; 75, hydraulic cylinder; 76, second pipeline; 81, horizontal plate; 82, sliding hole; 83, first air inlet; 84, placement slot; 85, plug hole; 86, second air inlet; 87, air inlet strip; 88, air hole; 9, plug body; 91, end block; 92, fixed section; 93, telescopic section; 94, cavity plate; 95, air cavity; 96, second connecting plate; 97, second spring; 98, plate body; 99, pressure sealing plate.

[0034] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. DETAILED DESCRIPTION

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] like Figure 1 - Figure 11 As shown, an embodiment of the present invention provides a soybean oil refining device with a filtering function, comprising: a plurality of channels equidistantly opened through the side of the filter furnace, the inner wall of each channel is connected to a sealing tube, a filter plate, one end of the filter plate passes through the sealing tube and extends into the transition box, one end of the filter plate is connected to the plug body through a connecting piece, the connecting piece is connected to the fan through a branch air duct, the connecting piece is used to control the connection between itself and the plug body under the action of gas and adjust the air pressure in the plug body, the connecting piece comprises: a partition box, the partition box is connected to the branch air duct, two symmetrically distributed partitions are connected to the inner wall of the partition box, each partition is connected to a plug plate on one side through a first spring, an air hole is opened through one side of the partition box, the partition is connected to a push rod and one end of the push rod passes through the air hole, the plug body is used to expand and contract under the action of air pressure and complete the sealing of the channel.

[0037] The frame plate is arranged in the filter furnace, and filter cloths are connected on both sides of the frame plate. The two ends of the frame plate are respectively connected to the end plug body and the plug body part. The end plug body is a prism shape, and one side of the end plug body is connected to the electromagnetic flowmeter through the liquid guide box. One side of the liquid guide box is connected to the hydraulic cylinder. The filter furnace is connected to the decolorization furnace. An alkali refining furnace and a decolorization furnace are arranged on one side of each decolorization furnace. The decolorization furnace is located between the alkali refining furnace and the deodorization furnace. The bottom of the filter furnace is connected to a bottom valve. Several filter plates are equidistantly distributed along the axis direction of the filter furnace. The transition box is used to accommodate the filter plates taken out of the filter furnace. The end plug body and the plug body parts are symmetrically distributed.

[0038] The filter frame 41 applies pressure to force the decolorized oil through the filter cloth 42, while adsorbents such as activated clay and activated carbon are trapped on the surface of the filter cloth 42, forming a filter residue. As filtration progresses, the filter residue gradually thickens, leading to increased filtration resistance (reduced oil flow and increased pressure). The pores of the filter cloth 42 become filled with fine particles, affecting filtration accuracy and efficiency and making it susceptible to clogging.

[0039] Some filter units with frame plates (41) support online backflushing (e.g., by flushing the surface of the filter cloth (42) with compressed air or clean oil in the reverse direction), allowing shallow residue removal without removing the filter plates. If the residue is loose (e.g., large clay particles), it can be removed by loosening the frame plates (41) and gently shaking the filter cloth (42) without completely removing the filter cloth (42). However, if the residue is tightly bound (e.g., hardened due to prolonged cleaning) or if the pores of the filter cloth (42) are clogged with fine activated carbon particles, the filter plates must be completely disassembled and manually cleaned or the filter cloth (42) replaced.

[0040] Continuous production mode (such as 24-hour operation): Clean 1-2 times a day: Suitable for scenarios with high oil flow and high adsorbent usage (e.g., clay addition > 3% in the bleaching process).

[0041] Check once per shift (8 hours): Observe the pressure gauge (if the pressure rises by more than 0.2MPa), to determine whether temporary cleaning is required.

[0042] Intermittent production mode (such as 8 hours of production per day): Cleaning after each batch of production: After each decolorization and filtration, loosen the frame plate 41 to remove the filter residue, and clean it 3 to 5 times a week on average.

[0043] If there are abnormally many impurities in the oil (such as incomplete pretreatment of the crude oil), it may be necessary to clean it every 2 to 4 hours, or even add a pre-filtration process.

[0044] When the filter cloth 42 is easily clogged and solidified impurities on the heated filter cloth 42 cannot be cleaned by gas backwash alone, or in order to improve the filtration efficiency, the filter plate 4 needs to be removed promptly and frequently, which is not conducive to continuous production.

[0045] Several filter plates 4 are evenly spaced vertically, rather than horizontally. First, if the filter plates 4 are evenly spaced vertically, a height difference will form between them. The filter plates 4 located near the liquid inlet pipe will come into contact with the crude oil the fastest, and the crude oil they come into contact with will contain more impurities. This will cause a time difference between the time different filter plates 4 need to be filtered and replaced. To avoid replacing all filter plates 4 at the same time, try to replace only one filter plate 4 at a time. While one or more filter plates 4 are being replaced, the remaining filter plates 4 continue to operate without affecting the continued operation of the filter furnace 14. Second, if the filter plates 4 are evenly spaced horizontally, it will be difficult for the filter plates 4 to separate the inner cavity of the filter furnace 14 into layers. The crude oil in the filter furnace 14 will contact all filter plates 4 simultaneously, making it impossible to distinguish the time difference between replacements.

[0046] The transition box 2 includes: an arc plate 21, one end of the arc plate 21 is connected to the side of the filter furnace 14, the end of the arc plate 21 away from the axis of the filter furnace 14 is connected to the first connecting plate 22, the upper surface of the first connecting plate 22 is penetrated by a discharge hole 23, the two ends of the arc plate 21 are connected to the top plate through the side plates 24, the side plates 24 and the top plate are rotatably installed with door panels 26, the inner wall of the side plate 24 is connected to the sealing strip 25, the sealing strip 25 is arranged at the rotation position of the door panel 26, the end of the arc plate 21 close to the axis of the filter furnace 14 is located at the end of the arc plate 21 away from the axis of the filter furnace 14, and the discharge hole 23 is connected to the first pipe 74 through the solenoid valve 73.

[0047] The filter plate 4 also includes: an extension tube 43, one end of the extension tube 43 is connected to the frame plate 41, the other end of the extension tube 43 is connected to the liquid guide box 6 through the end plug body 44, and the other side of the liquid guide box 6 is connected to the electromagnetic flowmeter 47. The end plug body 44 is made of fluororubber.

[0048] The end plug body 44 and the plug body 46 are made of fluororubber. The molecular structure of fluororubber contains fluorine and almost does not react chemically with oils and fats (including soybean oil). The surface energy is extremely low and oils and fats are difficult to adhere to. It can be used for a long time at -20℃~200℃, which is suitable for high-temperature contact with oils and fats. It is resistant to acids, alkalis, solvents, and has excellent anti-aging properties.

[0049] The cross-sectional area of ​​the end plug body 44 on the side close to the frame plate 41 is smaller than the cross-sectional area of ​​the end plug body 44 on the side away from the frame plate 41, the cross-sectional area of ​​the inner wall of the sealing tube 45 is larger than the cross-sectional area of ​​the end plug body 44 on the side close to the frame plate 41, and the cross-sectional area of ​​the inner wall of the sealing tube 45 is smaller than the cross-sectional area of ​​the end plug body 44 on the side away from the frame plate 41.

[0050] The liquid guide box 6 includes: an upper plate 61, which is located on one side of the end plug body 44. The upper plate 61 is connected to the lower plate 62 through a vertical plate 67. A first side plate 63 and a second side plate 64 are arranged between the upper plate 61 and the lower plate 62. The side of the upper plate 61 close to the lower plate 62 is respectively connected to the two ends of the first side plate 63 and the two ends of the second side plate 64. One side of the second side plate 64 is connected to the driving plate. A liquid outlet hole 65 is opened through the bottom of the inner wall of the first side plate 63. The liquid outlet hole 65 is connected to a liquid outlet pipe 66. The liquid outlet pipe 66 is connected to a second pipe 76 through an electromagnetic flowmeter 47.

[0051] After the filter plate 4 is moved, the sealing tube 45 is sealed by squeezing the end plug 44 or the plug 9 .

[0052] During the crude oil filtration process, preventing the filter furnace 14 from contacting the outside world is a key operating principle for ensuring oil quality and production safety. Crude oil (especially vegetable oils such as soybean oil) contains unsaturated fatty acids, which are prone to auto-oxidation when exposed to air, producing peroxides and aldehydes and ketones. This increases the oil's acidity, creates a rancid odor, and even affects subsequent refining. The filter furnace 14 is typically heated to 50-90°C (to improve oil fluidity). High temperatures increase the reaction rate between oxygen and oil several times, and if the equipment is not sealed, the oxidation rate is significantly accelerated. Vacuum filtration or a closed filtration system (such as a frame plate 41 filter combined with a sealed tank) reduces the area and duration of oil contact with air, thereby reducing the risk of oxidation. A closed filtration system prevents the entry of external contaminants, ensuring the cleanliness of the filtered crude oil and providing higher-quality raw materials for subsequent refining processes.

[0053] In order to facilitate the replacement of the filter plate 4, it is necessary to design a filter plate 4 that can automatically move in and out and ensure sealing. Therefore, a transition box 2 is set outside the filter furnace 14. The transition box 2 is sealed and serves as an isolation box during the removal of the filter plate 4 to prevent the filter furnace 14 from direct contact with the external environment.

[0054] If a sealing device is directly set between the filter furnace 14 and the transition box 2, it is necessary to add power or manually close it, and each time the filter plate 4 is taken out and placed, it needs to be controlled once, which is too cumbersome or increases the cost. By setting symmetrical end plugs 44 and plug parts 9 at both ends of the frame plate 41, and utilizing the gradual cross-sectional area of ​​the end plug body 44, it is convenient for the end plug body 44 and the plug part 9 to be sealed with the sealing tube 45 during movement, the structure is simple and the sealing effect is good.

[0055] The length of the second side plate 64 is smaller than that of the first side plate 63 . The upper plate 61 is a flat plate, and the lower plate 62 is an inclined plate. The angle between the inclined plate and the horizontal plane is 40°-45°.

[0056] When the angle between the inclined plate and the horizontal plane is 45°, the gravity component is large, and the oil slides down at high speed, greatly shortening the time it takes to pass through the plate.

[0057] The driving plate can be flexibly connected to the flexible clamp, the flexible clamp is connected to a vibration rod, and the top of the vibration rod is connected to a pneumatic vibrator.

[0058] Flexible connections are typically implemented using elastic elements (such as rubber pads, springs, and flexible couplings) to buffer vibration and shock. For example, a pneumatic vibrator generates high-frequency vibrations during operation. The flexible connection absorbs the rigid impact between the vibrator and the frame plate 41, preventing wear, deformation, or breakage caused by direct, rigid contact. Flexible connections also allow for slight displacement and angular deviation. During the filtration process, the frame plate 41 may deform slightly due to pressure or experience slight positional deviations during installation. The flexible connection adapts to these changes through elastic deformation, avoiding stress concentration caused by rigid constraints.

[0059] A pneumatic vibrator uses high-pressure air to act on a piston, causing it to reciprocate up and down, generating vibration. When high-pressure gas from an air compressor is introduced into the vibrator's air inlet through an air pipe, it pushes the piston upward, squeezing the gas within the piston's upper chamber. This compressed gas is then discharged through exhaust port 88. When the piston reaches its upper end point, the gas automatically switches direction through the groove and airway, allowing it to enter the piston's upper chamber. The high-pressure gas then pushes the piston downward to its end point, completing a cycle. This reciprocating cycle continuously repeats, causing the vibrator to produce translational motion and shaking, generating vibrational force that is transmitted to the connected frame plate 41.

[0060] When the filter plate 4 is in the initial state, the end plug 44 is plugged into the sealing tube 45 . When the filter plate 4 is pulled to the transition box 2 , the plug 9 is plugged into the sealing tube 45 , and the fixing plate 51 is located in the transition box 2 .

[0061] The connecting member 5 also includes: a second wind box 51, the second wind box 51 is connected to the air distribution pipe 37, the second wind box 51 is connected to the partition box 52, and a plurality of first air inlet holes 83 are opened on one side of the partition box 52. The inner cavity of the partition box 52 is divided into two pneumatic chambers and an air delivery chamber by two partitions 53. The two first air inlet holes 83 are respectively connected to one pneumatic chamber, and at least one first air inlet hole 83 is connected to the air delivery chamber. One end of the first spring 54 is connected to the partition 53, and the other end of the first spring 54 is connected to the pneumatic plate 55. The pneumatic plate 55 is bowl-shaped. The first spring 54 , the pneumatic plate 55 is arranged in the pneumatic cavity, and sliding holes 82 are opened at both ends of the partition box 52. The pneumatic plate 55 is connected to the shift rod 56. One end of the shift rod 56 passes through the sliding hole 82 and is connected to the plug plate 57. A horizontal plate 81 is arranged between the two partitions 53. The side of the horizontal plate 81 close to the plug body 9 is connected to the top rod 59. A placement groove 84 is opened on the side of the partition box 52 close to the plug body 9. The placement groove 84 is placed on the sealing ring 58. The sealing ring 58 is made of elastic material. The plug body 9 includes: an end block 91, which is arranged on one side of the plug plate 57. The end block 91 is close to the plug plate 57. A jack 85 is provided on the side, the end block 91 is connected to the telescopic section 93 through the fixed section 92, one end of the telescopic section 93 is connected to the plate body 98, the inner wall of the middle part of the telescopic section 93 is connected to two cavity plates 94, and an air cavity 95 is provided between the two cavity plates 94. The inner wall of the fixed section 92 is connected to the second connecting plate 96, and the side of the fixed section 92 close to the end block 91 is penetrated by a second air inlet hole 86, and the side of the cavity plate 94 close to the end block 91 is penetrated by an air inlet strip 87. The second air inlet hole 86 is away from the end block 91. A pressure sealing plate 99 is provided on the side. The pressure sealing plate 99 is connected to the second air inlet hole 86 through a second spring 97. Second connecting plate 96, the second connecting plate 96 is connected to the inner wall of the fixed section 92, the air cavity 95 is connected to the air delivery cavity through the second air inlet hole 86, the air outlet of the fan 31 is connected to the first air box 35, and a plurality of air outlet holes 36 are opened on one side of the first air box 35, each air outlet hole 36 is connected to an air distribution pipe 37, and a baffle plate 34 is connected to the inner wall of the first air box 35. The baffle plate 34 is used to seal a plurality of air outlet holes 36 during rotation and connect one air outlet hole 36 to the air distribution pipe 37. One side of the baffle plate 34 is connected to the stepping motor 32 through the rotating shaft 33.

[0062] One end of the air distribution pipe 37 passes through the liquid guide box 6 , the end plug 44 , the extension pipe 43 in sequence and is connected to the second air box 51 .

[0063] When the filter plate 4 is pulled out from the filter furnace 14, the filter plate 4 drives the connecting piece 5 and the plug body 9 to move. When the filter plate 4 is pulled out from the filter furnace 14, the plug body 9 is located in the channel 71, the fan 31 is started, and the pneumatic plate 55 squeezes the first spring 54 under the action of wind pressure, the plug plate 57 is pulled out from the socket 85, the connecting piece 5 is separated from the plug body 9, the top rod 59 squeezes the pressure seam plate, the wind cavity 95 is filled with air, the middle part of the telescopic end expands and abuts against the channel 71 for sealing, the filter plate 4 and the filter plate 4 are pulled out, the top rod 59 is away from the pressure seam plate, and the pressure seam plate seals the second air inlet 86 under the action of elasticity. After the filter plate 4 is replaced, the connecting piece 5 abuts against the plug body 9, the fan 31 is turned off, the wind cavity 95 is deflated, the pressure seam plate is restored under the action of elasticity, and the plug plate 57 is plugged into the socket 85 under the elastic push of the first spring 54.

[0064] When in use, the crude oil after decolorization is transported to the filter furnace 14, and the crude oil in the filter furnace 14 is pressurized. A gear pump is used (to avoid shearing and destroying the colloid by the centrifugal pump). The flow rate is controlled at In the initial stage, the pressure is controlled at 0.1~0.2 MPa. After the filter chamber is filled, the pressure is gradually increased. In the low-pressure stage (0.2~0.3 MPa), the pressure is maintained for 5~10 minutes. The pressure is slowly increased to the target pressure of 0.3~0.55 MPa and maintained for 20~30 minutes, so that the crude oil passes through the filter cloth 42. The filter cloth 42 separates the oil and impurities, and the impurities adhere to the filter holes of the filter cloth 42 or around the filter holes. The oil passes through the filter cloth 42, the chamber within the filter plate, the extension tube 43, the end plug 44, the liquid guide box 6, the liquid outlet pipe 66, the electromagnetic flowmeter 47, and the filter pipe before being stored in the oil tank. The electromagnetic flowmeter 47 is used to measure the amount of oil flowing out of each filter plate 4 per unit time in real time, compare the amount of oil flowing out of the filter plate 4 per unit time with the amount of oil flowing out of the standard filter plate 4 per unit time, and judge the filtering capacity and blockage condition of the filter cloth 42 on the filter plate 4. When the flow attenuation rate of the filter cloth 42 {flow attenuation rate = (initial flow rate - current flow rate) / initial flow rate × 100%) of the filter cloth 42 is greater than 20%}, the filtering capacity of the filter leaf has significantly decreased and needs to be cleaned or replaced.

[0065] When the filter plate 4 needs to be taken out from the filter furnace 14, the position of the filter plate is determined, and the position of the hydraulic cylinder 75 and the air distribution pipe 37 corresponding thereto is determined. The hydraulic cylinder 75 is started, and the hydraulic cylinder 75 moves the filter plate 4, the connecting piece 5, and the plug body 9 in the direction of the axis away from the filter furnace 14. When the filter plate 4 is completely withdrawn from the filter furnace 14, the plug body 9 is located in the channel 71, and the stepper motor 32 is started. The rotating end of the stepper motor 32 drives the baffle plate 34 through the rotating shaft 33, and the baffle plate After the air outlet 34 rotates, one air outlet 36 opens, and the remaining sealed holes are sealed by the orifice-blocking plate 34. The fan 31 is started, and air passes through the air outlet and enters the first air box 35, the air distribution pipe 37, the second air box 51, the pneumatic chamber, and the air supply chamber in sequence. The wind pressure between the pneumatic plate 55 and the partition box 52 in the pneumatic chamber increases, and the pneumatic plate 55 moves toward the partition 53 with the shift rod 56 and the plug 57. The first spring 54 compresses, and the plug 57 is completely withdrawn from the insertion hole 85, separating the connector 5 from the plug body 9. One end of the push rod 59 passes through the air hole 88 and presses against the sealing plate 99. The second spring 97 compresses, leaving a gap between the compression plate and the second air inlet 86. At the same time, the wind in the air delivery cavity enters the air cavity 95 through the air hole 88, the second air inlet hole 86, and the air inlet strip 87 in sequence, and the wind pressure in the air cavity 95 increases. The telescopic section 93 is made of elastic material. The fixed sections 92 and the plate body 98 at both ends of the telescopic section 93 are both high-strength alloys, which are difficult to be stretched and deformed. The two ends of the telescopic section 93 are fixed, and the middle part of the telescopic section 93 is deformed by force. The middle part of the telescopic section 93 bulges outward and produces adaptive extrusion with the inner wall of the channel 71. The telescopic section 93 squeezes the inner wall of the channel 71 and seals the channel 71. Continue to pull the filter element and the connector 5 outward, the connector 5 is completely separated from the plug body 9, the plug body 9 stays at the channel 71 and seals the channel 71, the top rod 59 is also separated from the sealing plate 99, the second spring 97 elastically recovers, the compression plate presses the second air inlet 86 to prevent gas leakage in the air cavity 95, ensure the sealing of the channel 71, turn off the fan 31, and the first spring 54 moves the plug plate 57 to the initial position. After the filter plate 4 is replaced, the fan 31 is started, and the plug plate 57 continues to move toward the partition 53 driven by the pneumatic plate 55 to avoid collision between the connector 5 and the end block 91 during movement. When the connector 5 contacts the plug body 9, the fan 31 is turned off, the plug plate 57 is plugged into the socket 85, the filter plate 4, the connector 5, and the plug body 9 are connected together, the top rod 59 squeezes the sealing plate 99, the second air inlet 86 is opened, and the gas in the air cavity 95 escapes. The telescopic section 93 is a recoverable elastic deformation, and the middle part of the telescopic section 93 returns to its original shape. The telescopic section 93 no longer squeezes the channel 71, avoiding friction or extrusion between the plug body 9 and the subsequent movement, thereby extending the service life of the plug body 9.

[0066] Using wind as the sole power source does not affect the movement of the filter plate 4 and the plug 9. Wind pressure can also be used to control the movement of the plug plate 57 of the connector 5, allowing the filter plate 4 and the plug 9 to be connected or disconnected via the connector 5. Wind power can also be used to control the expansion of the telescopic section 93, controlling the opening and closing of the duct 71 via the telescopic section 93. When the filter plate 4 is withdrawn, the plug 9 remains in the duct 71 and seals it. When the plug 9 is first installed or removed, the plug 9 is not expanded and does not press against the inner wall of the duct 71, facilitating installation and removal of the plug 9 and reducing the possibility of wear during movement. When the connector 5 and the plug 9 are in contact, the push rod 59 can control the position of the sealing plate 99, regulating the wind pressure in the air chamber 95 and switching the telescopic section 93 between the expanded state and the initial state.

[0067] The sealing of the sealing tube 45 can be completed by moving the filter plate 4, thereby isolating the filter furnace 14 from the external environment, and the structure is simple.

[0068] After all the crude oil in transition box 2 is transferred to bleaching furnace 12 via first conduit 74, solenoid valve 73 is closed. This fully seals first conduit 74 and sealing tube 45, preventing direct communication between filter furnace 14 and the outside environment. Door panel 26 is then rotated open, threaded rod 53 is unscrewed, and filter plate 4 is replaced. The retractable end of hydraulic cylinder 75 pushes filter plate 4 back into filter furnace 14, allowing one or more filter plates 4 to be quickly replaced. This eliminates the need to remove all filter plates 4 simultaneously; only those with poor filtration performance need to be replaced. This allows for targeted replacement of all filter plates 4 sequentially, creating a time gap between replacements. Only one or more filter plates 4 can be removed at a time, while the remaining filter plates continue to operate normally, ensuring continuous production.

[0069] After the production is completed, the frame plate 41 and the filter cloth 42 can be vibrated by a pneumatic vibrator to remove large impurities on the surface of the filter cloth 42.

[0070] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. While specific details are described in detail in the preferred embodiments of the present invention to provide a thorough understanding of the present invention, those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0071] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A soybean oil refining device with filtering function, characterized in that: include: A plurality of holes (71) are formed at equal intervals through the side of the filter furnace (14), and the inner wall of each hole (71) is connected to a sealing tube (45); A filter plate member (4), one end of each of the filter plate members (4) passes through the sealing tube (45) and extends into the transition box (2), one end of the filter plate member (4) is connected to the plug member (9) via a connecting member (5), and the connecting member (5) is connected to the fan (31) via an air distribution pipe (37); The connecting member (5) is used to control the connection between itself and the plug member (9) under the action of gas and to adjust the gas pressure in the plug member (9). The connecting member (5) includes: a partition box (52), the partition box (52) is connected to the air distribution pipe (37), the inner wall of the partition box (52) is connected to two symmetrically distributed partitions (53), one side of each partition (53) is connected to a plug plate via a first spring (54), an air hole (88) is opened through one side of the partition box (52), the partition (53) is connected to a push rod (59), and one end of the push rod (59) passes through the air hole (88); The plug body (9) is used to expand and contract under the action of air pressure and complete the sealing of the channel (71).

2. The soybean oil refining device with filtering function according to claim 1, characterized in that: The filter plate (4) is configured to filter impurities in the decolorized oil body. The filter plate (4) comprises a frame plate (41), the frame plate (41) being disposed in a filter furnace (14), filter cloths (42) being connected to both sides of the frame plate (41), the two ends of the frame plate (41) being connected to an end plug body (44) and a plug body member (9), respectively. The end plug body (44) is prism-shaped, one side of the end plug body (44) is connected to an electromagnetic flowmeter (47) via a liquid guide box (6), and one side of the liquid guide box (6) is connected to a hydraulic cylinder (75). The filtering furnace (14) is connected to the decolorizing furnace (12), and an alkali refining furnace (11) and a decolorizing furnace (12) are provided on one side of each decolorizing furnace (12). The decolorizing furnace (12) is located between the alkali refining furnace (11) and the deodorizing furnace (13). The bottom of the filtering furnace (14) is connected to a bottom valve (72). A plurality of filter plates (4) are equidistantly distributed along the axis of the filtering furnace (14). The transition box (2) is used to accommodate the filter plates (4) taken out of the filtering furnace (14). The end plugs (44) and the plug members (9) are symmetrically distributed.

3. The soybean oil refining device with filtering function according to claim 1, characterized in that: The connecting member (5) further comprises: a second air box (51), the second air box (51) being connected to the air distribution pipe (37), the second air box (51) being connected to the partition box (52), a plurality of first air inlet holes (83) being provided on one side of the partition box (52), the inner cavity of the partition box (52) being divided into two pneumatic cavities and one air delivery cavity by two partitions (53), the two first air inlet holes (83) being respectively connected to one pneumatic cavity, at least one first air inlet hole (83) being connected to the air delivery cavity, one end of the first spring (54) being connected to the partition (53), the other end of the first spring (54) being connected to a pneumatic plate (55), the pneumatic plate (55) being bowl-shaped, the first spring (54) The spring (54) and the pneumatic plate (55) are both arranged in the pneumatic cavity. Both ends of the partition box (52) are penetrated with a sliding hole (82). The pneumatic plate (55) is connected with a shift rod (56). One end of the shift rod (56) passes through the sliding hole (82) and is connected to the plug plate. A transverse plate (81) is arranged between the two partitions (53). The transverse plate (81) is connected to the top rod (59) on the side close to the plug body (9). The partition box (52) is provided with a placement groove (84) on the side close to the plug body (9). The placement groove (84) is placed on the sealing ring (58). The sealing ring (58) is made of elastic material. The plug body (9) includes: an end block (91), and the end block (91) is arranged on one side of the plug plate (57). The end block (91) is provided with a socket (85) on a side close to the plug plate (57), the end block (91) is connected to a telescopic section (93) through a fixed section (92), one end of the telescopic section (93) is connected to a plate body (98), the inner wall of the middle part of the telescopic section (93) is connected to two cavity plates (94), an air cavity (95) is provided between the two cavity plates (94), the inner wall of the fixed section (92) is connected to a second connecting plate (96), a second air inlet (86) is provided through a side of the fixed section (92) close to the end block (91), an air inlet strip (87) is provided through a side of the cavity plate (94) close to the end block (91), and a pressure seal is provided on the side of the second air inlet (86) away from the end block (91). The plate (99) is connected to the second connecting plate (96) via the second spring (97), and the second connecting plate (96) is connected to the inner wall of the fixed section (92). The air cavity (95) is connected to the air delivery cavity via the second air inlet hole (86). The air outlet of the fan (31) is connected to the first air box (35), and a plurality of air outlet holes (36) are provided on one side of the first air box (35). Each of the air outlet holes (36) is connected to an air distribution pipe (37). The inner wall of the first air box (35) is connected to a baffle plate (34), and the baffle plate (34) is used to seal the plurality of air outlet holes (36) during rotation and to connect one air outlet hole (36) to the air distribution pipe (37).One side of the baffle plate (34) is connected to a stepping motor (32) via a rotating shaft.

4. The soybean oil refining device with filtering function according to claim 1, characterized in that: The transition box (2) comprises: an arc plate (21), one end of the arc plate (21) is connected to the side of the filter furnace (14), the end of the arc plate (21) away from the axis of the filter furnace (14) is connected to a first connecting plate (22), the upper surface of the first connecting plate (22) is penetrated by a discharge hole (23), the two ends of the arc plate (21) are connected to the top plate through the side plates (24), the side plates (24) and the top plate are both rotatably mounted with door panels (26), the inner wall of the side plate (24) is connected to a sealing strip (25), and the sealing strip (25) is arranged at the rotation position of the door panel (26), the end of the arc plate (21) close to the axis of the filter furnace (14) is located at the end of the arc plate (21) away from the axis of the filter furnace (14), and the discharge hole (23) is connected to the first pipe (74) through the electromagnetic valve (73).

5. The soybean oil refining device with filtering function according to claim 2, characterized in that: The filter plate member (4) further comprises an extension tube (43), one end of the extension tube (43) being connected to the frame plate (41), the other end of the extension tube (43) being connected to the liquid guide box (6) via an end plug (44), one side of the liquid guide box (6) being connected to a driving plate, and the other side of the liquid guide box (6) being connected to an electromagnetic flowmeter (47).

6. The soybean oil refining device with filtering function according to claim 5, characterized in that: The cross-sectional area of ​​the end plug body (44) on the side close to the frame plate (41) is smaller than the cross-sectional area of ​​the end plug body (44) on the side away from the frame plate (41); the cross-sectional area of ​​the inner wall of the sealing tube (45) is larger than the cross-sectional area of ​​the end plug body (44) on the side close to the frame plate (41); the cross-sectional area of ​​the inner wall of the sealing tube (45) is smaller than the cross-sectional area of ​​the end plug body (44) on the side away from the frame plate (41); and the end plug body (44) is made of fluororubber.

7. The soybean oil refining device with filtering function according to claim 5, characterized in that: The liquid guide box (6) comprises: an upper plate (61), the upper plate (61) is located on one side of the end plug body (44), the upper plate (61) is connected to the lower plate (62) through a vertical plate (67), a first side plate (63) and a second side plate (64) are provided between the upper plate (61) and the lower plate (62), the side of the upper plate (61) close to the lower plate (62) is connected to the two ends of the first side plate (63) and the two ends of the second side plate (64), a liquid outlet hole (65) is opened through the bottom of the inner wall of the first side plate (63), the liquid outlet hole (65) is connected to a liquid outlet pipe (66), and the liquid outlet pipe (66) is connected to a second pipe (76) through an electromagnetic flowmeter (47).

8. The soybean oil refining device with filtering function according to claim 7, characterized in that: The length of the second side plate (64) is shorter than that of the first side plate (63); the upper plate (61) is a flat plate; the lower plate (62) is an inclined plate; and the angle between the inclined plate and the horizontal plane is 40°-45°.

9. The soybean oil refining device with filtering function according to claim 3, characterized in that: When the filter plate (4) is pulled out from the filter furnace (14), the filter plate (4) drives the connecting member (5) and the plug member (9) to move. When the filter plate (4) is pulled out from the filter furnace (14), the plug member (9) is located in the duct (71), the fan (31) is started, the pneumatic plate (55) presses the first spring (54) under the action of wind pressure, the plug plate (57) is pulled out from the jack (85), the connecting member (5) is separated from the plug member (9), the push rod (59) presses the sealing plate (99), and the wind cavity (95) is filled with air. The middle part of the telescopic section (93) expands and abuts against the duct (71) to seal, the filter plate (4) is pulled out, the top rod (59) moves away from the pressure plate (99), and the pressure plate (99) seals the second air inlet (86) under the elastic action. After the filter plate (4) is replaced, the connecting member (5) abuts against the plug member (9), the fan (31) is turned off, the air cavity (95) is deflated, the pressure plate (99) recovers under the elastic action, and the plug (57) is plugged into the jack (85) under the elastic push of the first spring (54).

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