Precise filtering device for peanut oil

Abstract

The present invention relates to the technical field of peanut oil production and processing, and discloses a peanut oil precision filtration apparatus, which comprises: a casing, which is internally provided with a center cavity and a plurality of oil pressing cavities, and the oil pressing cavities are radially arranged, uniformly surround the center cavity and communicate with the center cavity; the oil pressing cavity is sequentially connected into the oil guide pipe in series; the first one-way valve is mounted at the joint of the oil pressing cavity and the oil guide pipe; the filtering pore plate is mounted at the position, corresponding to the downstream oil guide pipe, of the oil pressing cavity; the piston is arranged in the oil pressing cavity and is used for extracting the peanut oil in the upstream oil guide pipe, so that the peanut oil in the oil pressing cavity penetrates through the filtering pore plate and enters the downstream oil guide pipe; the turntable revolves in the central cavity; a connecting rod is hinged between the turntable and the piston; the pistons in the multiple oil pressing cavities can move through the connecting rods through revolution of the rotating disc, circulation and micropore filter pressing of peanut oil are achieved, and external peanut oil conveying equipment is not needed; the pressure in each oil pressing cavity is relatively balanced, so that the filtering efficiency and effect of each stage are ensured; the structure is compact and the occupied space is small.

Description

Technical Field

[0001] The invention relates to the technical field of peanut oil production and processing, and in particular to a peanut oil precision filtering device. Background Art

[0002] Peanut oil filtration is mainly to remove impurities, such as peanut residues, phospholipids, proteins, free fatty acids, colloids, and solid particles such as mud and sand mixed in during the production process. If these impurities are not removed, they will affect the appearance, taste, stability and shelf life of the peanut oil. For example, too high a phospholipid content will cause the peanut oil to become turbid and precipitate during storage, and it is easy to produce foam when heated.

[0003] There are mainly the following types of peanut oil filtration: Gravity sedimentation method: Use gravity to precipitate suspended impurities in the oil; this method is simple, but it takes a long time and does not completely remove impurities. Centrifugal filtration method: The centrifugal force generated by high-speed rotation separates impurities and particles in the oil; this method has a good effect in removing impurities, but it requires the purchase of a centrifugal filter, which is expensive. Plate and frame or bag filtration method: The oil passes through the filter cloth under pressure and uses the filter cloth to filter out impurities in the oil; this method is low-cost, simple to operate, takes less time, and has a good filtration effect. Microporous filtration method: Use a microporous filter to filter out tiny impurities and particles. This method is usually used for high-precision filtration. Membrane filtration method: Use membrane separation technology to filter out smaller impurities and particles. Adsorption method: Use adsorbents (such as activated clay, activated carbon, etc.) to remove pigments and other impurities in oil.

[0004] In the prior art, in order to improve the purity of peanut oil, reduce impurities, and make the microporous filter plate give full play to its filtering capacity, it is necessary to use microporous filter plates with different pore sizes for graded filtration in sequence; the peanut oil is pressurized and passes through the microporous filter plates at each level in sequence, thereby improving the quality of peanut oil production and processing. However, directly placing multiple layers of microporous filter plates at intervals will cause the pressure in the downstream section to decrease, the overall filtration efficiency to decrease, and the filtration effect to deteriorate. Using multiple filtration devices to place the microporous filter plates separately requires pressurization separately, and multiple sets of pressurization equipment and conveying equipment are prepared, and the equipment is dispersed, the volume is large, and the production line is long. Summary of the invention

[0005] The purpose of the present invention is to provide a peanut oil precision filtering device in order to solve the above-mentioned problems in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions: A peanut oil precision filtering device, comprising: The casing has a central cavity and a plurality of oil pressure cavities inside, and the oil pressure cavities are radially arranged to evenly surround the central cavity and are in communication with the central cavity; The oil guide pipe and the oil pressure chamber are connected in series in sequence to the oil guide pipe; The first one-way valve is installed at the connection between the oil pressure chamber and the oil guide pipe to make the peanut oil in the oil guide pipe flow in one direction; A filter orifice plate is installed at the position of the oil pressure chamber corresponding to the downstream oil guide pipe to block impurities in the peanut oil; A piston reciprocates in the oil pressure chamber, the piston extracts the peanut oil in the upstream oil guide pipe, and allows the peanut oil in the oil pressure chamber to pass through the filter plate and enter the downstream oil guide pipe; A turntable revolves in the central cavity, and a connecting rod is hinged between the turntable and the piston.

[0007] Furthermore, a driving machine is installed on the outside of the casing, and the output shaft of the driving machine extends into the central cavity and is connected to the rotating wheel, and one side of the edge of the rotating wheel is vertically connected to the transmission column; one side of the center of the turntable is connected to a ring sleeve that rotates around the transmission column.

[0008] Furthermore, the oil guide pipe between adjacent oil pressure chambers is connected in series with a flexible buffer chamber.

[0009] Furthermore, the oil guide pipes between adjacent oil pressure chambers are connected in series to a pressure barrel, a flexible liner is provided in the pressure barrel, and the buffer chamber is formed between one side of the flexible liner and the inner wall of the pressure barrel.

[0010] Furthermore, a cooling medium cavity is formed between the other side of the flexible liner and the inner wall of the pressure barrel. The pressure barrel is connected to an inlet pipe and an outlet pipe that are connected to the cooling medium cavity for the cooling medium to pass through. A second one-way valve that allows the cooling medium to flow in one direction is installed on the inlet pipe and the outlet pipe. The outlet pipe transports the cooling medium to the outer surface of the casing outside the oil pressure cavity.

[0011] Furthermore, two flexible inner liners are arranged in the pressure barrel, and the buffer cavity is formed between the two flexible inner liners and the inner wall in the middle of the pressure barrel; and two cooling medium cavities are formed between the two flexible inner liners and the inner walls at both ends of the pressure barrel.

[0012] Furthermore, the piston reciprocates in the oil pressure chamber section between the filter plate and the central chamber, and a scraper is connected to the side of the piston facing the filter plate. The scraper scrapes off impurities blocked on the surface of the filter plate as the piston reciprocates.

[0013] Furthermore, a bracket is connected to the side of the piston facing away from the central cavity, the first end of the scraper is rotatably connected to the bracket, and the second end of the scraper scrapes away impurities; a trough body is provided in the oil pressure chamber, and two parallel straight grooves are provided on the side of the trough body, the straight grooves are parallel to the movement direction of the piston, and the two straight grooves have different spacings from the filter plate; the two ends of the two straight grooves are connected by two parallel inclined grooves; an elastic top column is provided in the middle of the scraper, and the top column extends into the groove of the trough body and moves along the inner side of the groove with the scraper.

[0014] Furthermore, the top column moves unidirectionally in the groove of the groove body; the depth of the two straight grooves gradually deepens from one end to the other end; the two straight grooves and the two inclined grooves are all centrally symmetrical on the groove body; the inclined groove has the same depth as the shallower end of one straight groove, and forms a groove bottom step with the deeper end of the other straight groove.

[0015] Furthermore, a valve is provided outside the oil pressure chamber, and a filter plate is located between the valve and the central chamber; a detachable end cover is provided at the outer end of the oil pressure chamber; and a gap for storing impurities is provided between the end cover and the valve.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The invention can make pistons in multiple oil pressure chambers move through connecting rods through the revolution of the rotating disk, so as to realize the circulation and microporous pressure filtration of peanut oil, and only needs one set of driving equipment, and does not need external peanut oil conveying equipment; the pressure in each oil pressure chamber is relatively balanced, so as to ensure the filtering efficiency and effect at each level; the structure is compact and occupies little space; The present invention is provided with a buffer chamber that can be flexibly deformed, and according to the oil pressure time difference of adjacent oil pressure chambers, peanut oil is adaptively stored to serve as a buffer for adjacent oil pressure chambers, so that the oil pressure filtration is more stable and smooth; The present invention utilizes the deformation of the buffer cavity to change the volume of the cooling medium cavity in the pressure barrel of constant volume, and transports the cooling medium to the outside of the oil pressure cavity to dissipate heat and cool down the oil pressure cavity that is constantly working inside; The present invention can bidirectionally transport cooling medium through the unique design of double flexible inner tanks, so that both sides of the outer side of the oil pressure chamber receive cooling medium, thereby improving the comprehensiveness and sufficiency of heat dissipation of the oil pressure chamber; The present invention has a scraper that moves back and forth with the piston, which can clean the impurities on the surface of the filter plate in real time, ensure the permeability of the filter plate, improve the filtering efficiency, and ensure the filtering effect; The invention cooperates the scraper elastic top column with the slot body having straight slots and inclined slots, so that the scraper can scrape away impurities on the filter plate when moving outward, and keep a distance from the filter plate when moving inward, thereby ensuring that the impurities are stably transported outward and temporarily stored and collected; The invention facilitates the cleaning of impurities without stopping the machine by means of the valve and the detachable end cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the horizontal cross-section top view of the structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the horizontal cross-section three-dimensional structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the first vertical cross-sectional three-dimensional structure of the present invention.

[0020] Figure 4 It is a schematic diagram of a second vertical sectional three-dimensional structure of the present invention.

[0021] Figure 5 It is a schematic diagram of the scraper connection structure of the present invention.

[0022] Figure 6 It is an exploded schematic diagram of the scraper connection structure of the present invention.

[0023] Figure 7 It is a schematic diagram of the tank structure of the present invention.

[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the present invention.

[0025] Fig. 9 It is a schematic diagram of the top structure of the present invention.

[0026] Fig.10 It is a side structural schematic diagram of the present invention.

[0027] In the figure: 1, casing; 2, central cavity; 3, oil pressure cavity; 4, oil guide pipe; 5, first one-way valve; 6, filter orifice plate; 7, piston; 8, turntable; 9, connecting rod; 10, flywheel; 11, driving machine; 12, rotating wheel; 13, transmission column; 14, ring sleeve; 15, pressure barrel; 16, flexible liner; 17, inlet pipe; 18, outlet pipe; 19, second one-way valve; 20, scraper; 21, bracket; 22, torsion spring; 23, trough body; 2301, straight groove; 2302, inclined groove; 2303, bottom step of groove; 24, top column; 25, coil spring; 26, blind hole; 27, end cover; 28, valve; 29, heat dissipation rib; 30, stopper. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" that may appear should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "provided with" that may appear should be understood in a broad sense. For example, the object "provided with" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or an inseparable connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Specific embodiments of the peanut oil precision filtering device provided by the present invention: See also Figure 1-10 The peanut oil precision filtering device comprises a casing 1, an oil guide pipe 4, a first one-way valve 5, a filtering orifice plate 6, a piston 7 and a rotating disk 8.

[0033] A central cavity 2 and a plurality of oil pressure cavities 3 are provided inside the casing 1. The central cavity 2 is a vertical cylindrical cavity, and the oil pressure cavity 3 is a horizontal cylindrical cavity. The inner diameter of the central cavity 2 is larger than the inner diameter of the oil pressure cavity 3, and the inner diameter of the oil pressure cavity 3 is not larger than the height of the central cavity 2.

[0034] The oil pressure chamber 3 is radially arranged and uniformly surrounds the central cavity 2 and is connected to the central cavity 2 at its inner end. The casing 1 is circular, and the portion of the middle portion of the casing 1 corresponding to the central cavity 2 is convex at the upper and lower sides. The side walls of the oil pressure chamber 3 form bulges on the upper and lower sides of the casing 1, and the outer end wall of the oil pressure chamber 3 extends radially outward to form a radially convex cylindrical portion (the valve 28 and end cover 27 described below are installed on this portion).

[0035] The shape of the oil guide pipe 4 is nearly circular, and there is a gap between the head and tail ends of the oil guide pipe 4; one end of the oil guide pipe 4 is connected to the oil storage device for the peanut oil to be filtered as the oil inlet end, and the other end is connected to the oil storage device for the filtered peanut oil; in this embodiment, threaded joints are set at both ends of the oil guide pipe 4, and in some other embodiments, flange joints can be set at both ends of the oil guide pipe 4 instead of threaded joints.

[0036] The oil guide pipe 4 passes through the middle of each oil pressure chamber 3 in sequence, or equivalently, the middle of the oil pressure chamber 3 is radially connected in series with the oil guide pipe 4 in sequence; the oil pressure chamber 3 is connected to the oil guide pipe 4 .

[0037] The first one-way valve 5 is installed at the connection between the oil pressure chamber 3 and the oil guide pipe 4 to allow the peanut oil in the oil guide pipe 4 to flow in one direction; the oil guide pipes 4 on both sides of each oil pressure chamber 3 are installed with the first one-way valve 5. The first one-way valve 5 allows the peanut oil to flow in one direction from the oil inlet end to the oil outlet end of the oil guide pipe 4, preventing the peanut oil from flowing in the opposite direction.

[0038] The two sides of the middle of the oil pressure chamber 3 are connected with the oil guide pipe 4 to form two ports. Along the flow path of the oil guide pipe 4, one port corresponds to the upstream oil guide pipe 4, and the other port corresponds to the downstream oil guide pipe 4. The filter plate 6 is installed at the position of the oil pressure chamber 3 corresponding to the downstream oil guide pipe 4, and is used to block impurities in the peanut oil and keep the impurities in the oil pressure chamber 3. In this way, each oil pressure chamber 3 blocks impurities step by step, and finally the clean peanut oil is discharged from the outlet end of the oil guide pipe 4.

[0039] Micropores are evenly arranged on the filter plate 6; the filter hole diameters of the filter plate 6 in each oil pressure chamber 3 gradually become smaller along the flow direction of the peanut oil in the oil guide pipe 4, thereby achieving gradually refined filtration, improving the purity of the peanut oil, and reducing impurities in the peanut oil.

[0040] The piston 7 moves back and forth in the oil pressure chamber 3, and the piston 7 extracts the peanut oil in the upstream oil guide pipe 4, so that the peanut oil in the oil pressure chamber 3 passes through the filter hole plate 6 and enters the downstream oil guide pipe 4; when the piston 7 moves toward the central cavity 2, the internal space of the oil pressure chamber 3 increases, and due to the action of the first one-way valve 5 on both sides of the oil pressure chamber 3, the oil capacity of the oil pressure chamber 3 increases, and peanut oil can only be extracted from the upstream oil guide pipe 4. When the piston 7 moves away from the central cavity 2, the peanut oil is directly compressed, and due to the action of the first one-way valve 5 on both sides of the oil pressure chamber 3, the peanut oil can only enter the oil guide pipe 4 from the downstream oil guide pipe 4 from the oil pressure chamber 3, thus realizing the one-way transportation of the peanut oil, and realizing the transportation of the peanut oil while pressurizing and filtering, without relying on external transportation equipment.

[0041] When the peanut oil enters the downstream oil guide pipe 4 from the oil pressure chamber 3 , it passes through the filter hole plate 6 . The clean peanut oil passes through the filter hole plate 6 , and the impurities larger than the filter hole diameter remain in the oil pressure chamber 3 .

[0042] In this embodiment, a square expansion section is provided at the connection between the oil guide pipe 4 and the oil pressure chamber 3. The inner diameter cross-section of the expansion section is square, and the cross-sectional area is larger than the cross-sectional area of ​​the oil guide pipe 4. The filter hole plate 6 is located on the inner side of the expansion section. The filter hole plate 6 is in the shape of an arc plate and serves as a part of the inner wall of the oil pressure chamber 3.

[0043] The turntable 8 revolves in the central cavity 2, and a connecting rod 9 is hinged between the turntable 8 and the piston 7. The turntable 8 includes two layers of vertically corresponding circular plates with a gap, and a hinge shaft is connected between the edges of the two circular plates. The hinge shafts are evenly distributed around the circumference and are hinged to the connecting rod 9 through the hinge shaft; the turntable 8 revolves around the center of the central cavity 2 in the central cavity 2. For each oil pressure cavity 3, the turntable 8 continuously moves away from or close to the oil pressure cavity 3, and the piston 7 is reciprocated in the oil pressure cavity 3 through the connecting rod 9 to realize oil extraction and oil pressure filtering.

[0044] A driving machine 11 is installed on the outer side of the upper side of the casing 1. In this embodiment, the driving machine 11 adopts a reduction motor. In other embodiments, the driving machine 11 may adopt an engine. The output shaft of the driving machine 11 passes through the upper wall of the casing 1 and extends into the central cavity 2 and is connected to the rotating wheel 12. The rotation center of the output shaft of the driving machine 11, the rotation center of the rotating wheel 12 and the rotation center of the central cavity 2 are located on the same vertical straight line.

[0045] The lower side of the edge of the rotating wheel 12 is vertically connected to the transmission column 13; the center side of the rotating disk 8 is connected to a ring sleeve 14 that rotates around the transmission column 13; the vertical center section of the transmission column 13 is in an inverted T shape, and the ring sleeve 14 is located at the center of the rotating disk 8. The ring sleeve 14 wraps the T-shaped head of the transmission column 13, and the T-shaped head of the transmission column 13 rotates in the ring sleeve 14. In this way, when the output shaft of the driving machine 11 rotates, the rotating wheel 12 rotates the transmission column 13 to drive the rotating disk 8 to revolve in the central cavity 2, and the T-shaped head of the transmission column 13 rotates in the ring sleeve 14 during this process.

[0046] The driving transmission structure of this embodiment is similar to that of a radial engine, except that the transmission direction is opposite, and the piston 7 of this embodiment actively reciprocates in the oil pressure chamber 3 to pressurize the oil, rather than passively reciprocating under the action of fuel combustion in a radial engine.

[0047] Since the turntable 8 deviates from the center of the output shaft of the driving machine 11 and revolves in the central cavity 2, obvious vibration will be generated; therefore, a flywheel 10 is connected to the lower side of the turntable 8. The center of gravity of the flywheel 10 and the center of gravity of the rotation of the turntable 8 are symmetrical about the output shaft of the driving machine 11, which plays a balancing role, makes the rotation smooth, and minimizes vibration.

[0048] Since the pistons 7 in each oil pressure chamber 3 are not synchronized, there is a time difference between the oil in and out of each oil pressure chamber 3; there is a time difference between the oil in and out of adjacent oil pressure chambers 3, such as when the downstream oil pressure chamber 3 is in the tail period of oil pumping, while its adjacent upstream oil pressure chamber 3 is still in the middle period of oil pumping, the peanut oil is transported to the downstream oil pressure chamber 3, and thus the efficiency and stable transportation and filtration of peanut oil are affected. In addition, the oil storage capacity of the oil guide pipe 4 between adjacent oil pressure chambers 3 is limited, and it is unable to make up for the shortage of peanut oil required by the downstream oil pressure chamber 3.

[0049] Therefore, in this embodiment, the oil guide pipe 4 between the adjacent oil pressure chambers 3 is connected in series with a flexible buffer chamber, and a certain amount of peanut oil is contained in the buffer chamber. The volume of the flexible buffer chamber can be changed, which can make up for the regular change of oil volume caused by the time difference of conveying peanut oil in the adjacent oil pressure chambers 3. For example, when the adjacent oil pressure chambers 3 are all pumping oil, the peanut oil in the buffer chamber can be extracted, and the volume of the flexible buffer chamber decreases after the peanut oil is output; when the adjacent oil pressure chambers 3 are all pressurizing oil, the volume of the peanut oil stored in the corresponding flexible buffer chamber increases, and the buffer chamber increases and decreases regularly, ensuring that the peanut oil passes smoothly and avoiding the oil interruption phenomenon.

[0050] In order to achieve the buffering effect; in this embodiment, the oil guide pipe 4 between the adjacent oil pressure chambers 3 is connected in series with the pressure barrel 15, the outer side of the middle of the pressure barrel 15 is connected to the housing 1, and a flexible inner liner 16 made of rubber is provided in the pressure barrel 15, and the above-mentioned buffer chamber is formed between one side of the flexible inner liner 16 and the inner wall of the pressure barrel 15. This structure is similar to the structure of the water purifier providing water pressure. The flexible inner liner 16 made of rubber can be deformed and enlarged and shrunk regularly in the pressure barrel 15 according to the amount of peanut oil.

[0051] The flexible inner liner 16 has a regular volume change. A cooling medium cavity is formed between the other side of the flexible inner liner 16 and the inner wall of the pressure barrel 15. The pressure barrel 15 is connected with an inlet pipe 17 and an outlet pipe 18 for the cooling medium to pass through, which are connected to the cooling medium cavity. A second one-way valve 19 for one-way flow of the cooling medium is installed on the inlet pipe 17 and the outlet pipe 18. The outlet pipe 18 transports the cooling medium to the outer surface of the casing 1 outside the oil pressure chamber 3.

[0052] Since the piston 7 in the oil pressure chamber 3 continuously moves back and forth and pressurizes the oil to do work, the temperature of the side wall of the oil pressure chamber 3 of the housing 1 is relatively high, so the cooling medium is simultaneously delivered through the regular volume change of the flexible liner 16 in the pressure barrel 15 to dissipate heat and cool the oil pressure chamber 3. In this embodiment, the cooling medium is air, the second one-way valve 19 adopts a one-way damper, and the discharge pipe 18 is directly directed to the outer wall of the oil pressure chamber 3 to dissipate heat and cool the oil pressure chamber 3; a plurality of heat dissipation ribs 29 are arranged on the outer wall of the oil pressure chamber 3 of the housing 1 corresponding to the oil pressure position, and the heat dissipation ribs 29 increase the contact area with the cooling medium to promote rapid heat dissipation and cooling.

[0053] When the peanut oil in the flexible inner liner 16 becomes less, the flexible inner liner 16 becomes smaller, and the volume of the buffer chamber decreases. Due to the action of the second one-way valve 19, external air can only be sucked into the pressure barrel 15 through the inlet pipe 17; when the peanut oil in the flexible inner liner 16 increases, the flexible inner liner 16 becomes larger, the volume of the buffer chamber increases, and the space of the cooling medium chamber in the pressure barrel 15 is compressed. Due to the action of the second one-way valve 19, air can only be discharged from the pressure barrel 15 from the discharge pipe 18, and the air is transported to the outside of the side wall of the oil pressure chamber 3, and the heat dissipation and cooling effect is improved by promoting the air flow outside the side wall of the oil pressure chamber 3.

[0054] In some other embodiments, the cooling medium may be coolant, but an interlayer for the coolant to pass through is required to be provided inside or outside the side wall of the recompression oil chamber 3, and the interlayer is connected in series to the coolant circulation system to achieve more sufficient heat dissipation.

[0055] In order to dissipate heat and cool down the two sides of the casing 1, in this embodiment, two flexible inner liners 16 are arranged in the middle of the pressure barrel 15, and the annular fixed ends of the two flexible inner liners 16 have gaps, and the above-mentioned buffer cavity is formed between the two flexible inner liners 16 and the inner wall of the middle part of the pressure barrel 15; the two flexible inner liners 16 respectively form two cooling medium cavities with the inner walls at both ends of the pressure barrel 15.

[0056] Both cooling medium chambers are connected with an inlet pipe 17 and an outlet pipe 18, so that the outlet pipes 18 of the two cooling medium chambers at both ends of the pressure barrel 15 correspond to the two sides of the casing 1, that is, the outer walls of the two sides of the oil pressure chamber 3, respectively, to achieve more comprehensive and sufficient heat dissipation and cooling.

[0057] The piston 7 reciprocates in the oil pressure chamber 3 between the filter orifice plate 6 and the central chamber 2; in order to prevent the filter holes of the filter orifice plate 6 from being blocked when the piston 7 is filtering the oil, a scraper 20 is connected to the side of the piston 7 facing the filter orifice plate 6, and the scraper 20 reciprocates with the piston 7 to scrape off impurities blocked on the surface of the filter orifice plate 6.

[0058] Specifically, a bracket 21 is connected to the side of the piston 7 facing away from the central cavity 2, a first end of the scraper 20 is rotatably connected to the bracket 21, a second end of the scraper 20 is arc-shaped and can fit with the inner side of the arc-shaped filter hole plate 6 to scrape off impurities, and a chamfer is provided at the second end of the scraper 20; a groove body 23 is provided in the oil pressure chamber 3, two parallel straight grooves 2301 are provided on the side of the groove body 23, the straight grooves 2301 are parallel to the moving direction of the piston 7, and the two straight grooves 2301 have different spacings from the filter hole plate 6; the two ends of the two straight grooves 2301 are connected by two parallel inclined grooves 2302; an elastic top column 24 is provided in the middle of the scraper 20, the top column 24 extends into the groove of the groove body 23 and moves along the inner side of the groove with the scraper 20.

[0059] The top column 24 moves in a unidirectional cycle in the groove of the groove body 23; the depth of the two straight grooves 2301 gradually increases from one end to the other end; the two straight grooves 2301 and the two inclined grooves 2302 are all centrally symmetrical on the groove body 23; the inclined groove 2302 has the same depth as the shallower end of one straight groove 2301, and forms a groove bottom step 2303 with the deeper end of the other straight groove 2301.

[0060] The horizontal distance from the straight groove 2301 closer to the filter hole plate 6 to the hinge of the scraper 20 is equal to the distance from the top column 24 to the hinge of the scraper 20. The moving direction of the top column 24 in the straight groove 2301 closer to the filter hole plate 6 is away from the central cavity 2.

[0061] In this embodiment, there are two grooves 23, which are respectively located on the upper and lower sides of the scraper 20, and the grooves on the grooves 23 face the scraper 20; matching therewith, two elastic top posts 24 are also provided, which are respectively located on the upper and lower sides of the scraper 20. Specifically, blind holes 26 are provided on the upper and lower sides of the middle part of the scraper 20, and the top posts 24 slide along the inner wall of the blind holes 26 and extend out of the blind holes 26. A coil spring 25 is connected between the inner end of the top post 24 and the inner end of the blind hole 26, and the coil spring 25 makes the outer end of the top post 24 always close to the bottom surface of the groove of the groove body 23. In some other embodiments, a roller can be sleeved on the outer side of the top post 24 to reduce the friction on the inner wall of the groove of the groove body 23.

[0062] A torsion spring 22 is provided at the connection between the scraper 20 and the bracket 21 , and two blocks 30 are provided on the bracket 21 . When the scraper 20 and the blocks 30 are in contact with each other, the scraper 20 and the bracket 21 are perpendicular, and the torsion spring 22 makes the scraper 20 and the blocks 30 in contact with each other.

[0063] The straight groove 2301 closer to the filter plate 6 is a push plate groove, that is, when the piston 7 moves outward, the top column 24 moves along the push plate groove, at this time, the scraper 20 is perpendicular to the bracket 21, and the second end of the scraper 20 fits the filter plate 6 to scrape impurities. The straight groove 2301 farther from the filter plate 6 is a retreating plate groove, that is, when the piston 7 moves toward the central cavity 2, the top column 24 moves along the retreating plate groove, at this time, the scraper 20 and the bracket 21 are inclined, and there is a gap between the second end of the scraper 20 and the filter plate 6, so that impurities will not be driven inward.

[0064] The process of cleaning impurities on the surface of the filter plate 6: the piston 7 drives the scraper 20 to move away from the central cavity 2 through the bracket 21, the scraper 20 is perpendicular to the bracket 21, and the second end of the scraper 20 scrapes the impurities on the surface of the filter plate 6; the top column 24 extends into the push plate groove and moves along the push plate groove. Due to the lateral restriction of the top column 24, the scraper 20 cannot tilt, and the torsion spring 22 makes the second end of the scraper 20 close to the filter plate 6; when the top column 24 moves to the right end of the push plate groove, such as Figure 5 , Figure 6 , Figure 7When the middle tank body 23 is at the right end, the top column 24 moves along the right end inclined groove 2302, and the top column 24 moves to the plate withdrawal groove. The scraper 20 overcomes the elastic force of the torsion spring 22, and the second end of the scraper 20 tilts toward the bracket 21. The second end of the scraper 20 forms a gap with the filter orifice 6, and then the piston 7 starts to move in the opposite direction to the central cavity 2, and does not scrape impurities inward; due to the restriction of the bottom step 2303 of the groove and the top column 24 supported by the spiral spring 25, the top column 24 cannot return to the push plate groove, and returns to the left end along the plate withdrawal groove. When it moves to the left end inclined groove 2302, due to the restriction of the inclined groove 2302 on the top column 24 and the action of the torsion spring 22 on the scraper 20, the top column 24 enters the left end of the push plate groove, and the scraper 20 is perpendicular to the bracket 21. There is no gap between the second end of the scraper 20 and the filter orifice 6, and the next impurity scraping can be carried out. Reciprocating in sequence, the top column 24 moves along the groove of the tank body 23 in a one-way cycle, pushing the impurities to the outer end of the oil pressure chamber 3.

[0065] After long-term use, impurities accumulate at the outer end of the oil pressure chamber 3. A valve 28 is provided outside the oil pressure chamber 3, and the valve 28 adopts a plug valve with good sealing performance. The filter orifice 6 is located between the valve 28 and the central cavity 2 and close to the valve 28; a detachable end cover 27 is provided at the outer end of the oil pressure chamber 3, and the end cover 27 is a flange cover connected to the outer end of the side wall of the oil pressure chamber 3 by bolts; there is a gap between the end cover 27 and the valve 28 for storing impurities. Transparent glass can be inlaid in the middle of the outer side wall of the oil pressure chamber 3 or the end cover 27. When a lot of impurities accumulate, the valve 28 is closed without stopping the machine, and the end cover 27 is opened to clean the impurities accumulated at the outer end of the oil pressure chamber 3. After completion, the end cover 27 is installed and the valve 28 is opened, and the gap between the valve 28 and the end cover 27 can continue to collect impurities.

[0066] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A peanut oil precision filtration device, characterized in that: include: A casing (1) is provided with a central cavity (2) and a plurality of oil pressure cavities (3) inside, wherein the oil pressure cavities (3) are radially arranged to evenly surround the central cavity (2) and are in communication with the central cavity (2); The oil guide pipe (4) and the oil pressure chamber (3) are connected in series in sequence to the oil guide pipe (4); A first one-way valve (5) is installed at the connection between the oil pressure chamber (3) and the oil guide pipe (4) to allow the peanut oil in the oil guide pipe (4) to flow in one direction; A filter plate (6) is installed at a position of the oil pressure chamber (3) corresponding to the downstream oil guide pipe (4) and is used to block impurities in the peanut oil; A piston (7) reciprocates in the oil pressure chamber (3), the piston (7) extracts peanut oil in the upstream oil guide pipe (4), and allows the peanut oil in the oil pressure chamber (3) to pass through the filter plate (6) and enter the downstream oil guide pipe (4); A rotating disk (8) revolves in the central cavity (2), and a connecting rod (9) is hingedly connected between the rotating disk (8) and the piston (7).

2. The peanut oil precision filtering device according to claim 1, characterized in that: A driving machine (11) is installed on the outside of the housing (1), an output shaft of the driving machine (11) extends into the central cavity (2) and is connected to a rotating wheel (12), an edge of the rotating wheel (12) being vertically connected to a transmission column (13); a central side of the rotating disk (8) is connected to a ring sleeve (14) that rotates around the transmission column (13).

3. The peanut oil precision filtering device according to claim 1, characterized in that: The oil guide pipe (4) between adjacent oil pressure chambers (3) is connected in series with a flexible buffer chamber.

4. The peanut oil precision filtering device according to claim 3, characterized in that: The oil guide pipe (4) between adjacent oil pressure chambers (3) is connected in series to a pressure barrel (15), a flexible inner liner (16) is provided in the pressure barrel (15), and the buffer chamber is formed between one side of the flexible inner liner (16) and the inner wall of the pressure barrel (15).

5. The peanut oil precision filtering device according to claim 4, characterized in that: A cooling medium cavity is formed between the other side of the flexible inner liner (16) and the inner wall of the pressure barrel (15). The pressure barrel (15) is connected to an inlet pipe (17) and an outlet pipe (18) which are in communication with the cooling medium cavity and through which the cooling medium passes. A second one-way valve (19) is installed on the inlet pipe (17) and the outlet pipe (18) to allow the cooling medium to flow in one direction. The outlet pipe (18) transports the cooling medium to the outer surface of the casing (1) outside the oil pressure cavity (3).

6. The peanut oil precision filtering device according to claim 5, characterized in that: Two flexible inner liners (16) are arranged in the pressure barrel (15), and the buffer cavity is formed between the two flexible inner liners (16) and the inner wall at the middle of the pressure barrel (15); and two cooling medium cavities are formed between the two flexible inner liners (16) and the inner walls at both ends of the pressure barrel (15).

7. The peanut oil precision filtering device according to claim 1, characterized in that: The piston (7) reciprocates in the oil pressure chamber (3) between the filter plate (6) and the central chamber (2). A scraper (20) is connected to the side of the piston (7) facing the filter plate (6). The scraper (20) reciprocates with the piston (7) to scrape away impurities blocked by the surface of the filter plate (6).

8. The peanut oil precision filtering device according to claim 7, characterized in that: The piston (7) is connected to a bracket (21) on the side facing away from the central cavity (2); a first end of a scraper (20) is rotatably connected to the bracket (21); and a second end of the scraper (20) scrapes away impurities; a groove body (23) is provided in the oil pressure cavity (3); two parallel straight grooves (2301) are provided on the side of the groove body (23); the straight grooves (2301) are parallel to the moving direction of the piston (7); the two straight grooves (2301) and the filter plate (6) have different spacings; the two ends of the two straight grooves (2301) are connected through two parallel inclined grooves (2302); and an elastic top column (24) is provided in the middle of the scraper (20); the top column (24) extends into the groove of the groove body (23) and moves along the inner side of the groove with the scraper (20).

9. The peanut oil precision filtering device according to claim 8, characterized in that: The top column (24) moves in a unidirectional cycle in the groove of the groove body (23); the depth of the two straight grooves (2301) gradually increases from one end to the other end; the two straight grooves (2301) and the two inclined grooves (2302) are all centrally symmetrical on the groove body (23); the inclined groove (2302) has the same depth as the shallower end of one straight groove (2301), and forms a groove bottom step (2303) with the deeper end of the other straight groove (2301).

10. The peanut oil precision filtering device according to any one of claims 7 to 9, characterized in that: A valve (28) is provided outside the oil pressure chamber (3), and the filter plate (6) is located between the valve (28) and the central chamber (2). A detachable end cover (27) is provided at the outer end of the oil pressure chamber (3); and a gap for storing impurities is provided between the end cover (27) and the valve (28).

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