Filtering device for producing high-purity oleic acid

Abstract

The invention discloses a filtering device for high-purity oleic acid production, and relates to the technical field of high-purity oleic acid filtering, in particular to a filtering device for high-purity oleic acid production. Comprising a bearing frame which is provided with a collecting pool; the liquid guide pipe is fixedly connected to the bearing frame; the liquid feeding pipe is fixedly connected to one side of the bearing frame; the fixing plate is fixedly connected to the bearing frame, and the liquid feeding pipe penetrates through the fixing plate; the device comprises a bearing frame, a plurality of first sliding shells and a plurality of second sliding shells, the first sliding shells and the second sliding shells are slidably connected to the bearing frame, all the second sliding shells and all the first sliding shells are distributed in a staggered mode, the first sliding shells are fixedly connected with guide pipes, and the second sliding shells are detachably connected with filtering pieces. According to the invention, impurities on the filter cloth are extruded by innovatively adopting a transverse translation mode, so that not only can the pressure distribution be highly uniform in the extrusion process, but also the impurities on the filter cloth can be ensured to be comprehensively and uniformly extruded.

Description

Technical Field

[0001] The present invention relates to the technical field of high-purity oleic acid filtration, and particularly to a filtration device for the production of high-purity oleic acid. Background Art

[0002] Oleic acid is a monounsaturated fatty acid, usually existing in liquid form, light yellow in color, and mainly obtained through the refining process of natural vegetable oils (such as olive oil, rapeseed oil). High-purity oleic acid is widely used in industries such as cosmetics, pharmaceuticals, and food processing, for example, as a solvent, lubricant, emulsifier, etc.

[0003] In order to ensure the purity and quality of oleic acid, filtration devices are usually used to remove impurities in oleic acid during the existing production process. Commonly used filtration devices include centrifuges, plate-and-frame filter presses, activated carbon filters, etc. Among them, the plate-and-frame filter press usually consists of multiple plate frames, extrusion equipment, and moving equipment. Filter cloths are placed between each plate frame. When oleic acid passes through these filter cloths, solid impurities are intercepted, and the liquid flows out through the filter cloths, thus achieving solid-liquid separation. When the filtration of oleic acid is completed, the extrusion equipment applies pressure to the impurities on the filter cloth, forcing the oleic acid in the impurities to be extruded, so that the remaining oleic acid is further extracted, improving the recovery rate of oleic acid. Finally, the moving equipment separates each plate frame, causing the impurities to fall downward or be cleaned by cleaning equipment.

[0004] However, when the existing extrusion equipment applies pressure to the impurities on the filter cloth, the tympanic membrane on the extrusion equipment expands outward in an arc shape. Looking from the side, it extrudes the impurities on the filter cloth in an arc shape. This will cause the oleic acid in the impurities located in the middle of the filter cloth to be extruded, while the oleic acid located on the outside cannot be fully extruded, resulting in a low recovery rate of oleic acid and affecting the overall production efficiency and economic benefits. Summary of the Invention

[0005] In order to solve the problem that when the existing extrusion equipment applies pressure to the impurities on the filter cloth, it expands in an arc shape, resulting in the formed shape also being arc-shaped, so that the impurities located in the middle of the filter cloth are fully extruded, while the oleic acid in the impurities located on the outside cannot be fully extruded, causing a low recovery rate of oleic acid, the present invention provides a filtration device for the production of high-purity oleic acid.

[0006] The technical implementation solution of the present invention is as follows: A filtration device for the production of high-purity oleic acid, comprising:

[0007] A carrier frame, on which a collection pool is provided;

[0008] A liquid guide pipe, fixedly connected to the carrier frame;

[0009] A liquid supply pipe, fixedly connected to one side of the carrier frame;

[0010] The fixed plate is fixedly connected to the carrier, and the liquid delivery pipe passes through the fixed plate;

[0011] A plurality of first sliding shells and a plurality of second sliding shells are all slidably connected to the carrier. All the second sliding shells and all the first sliding shells are staggered. The first sliding shell is fixedly connected with a guiding pipe. The second sliding shell is detachably connected with a filtering element. The second sliding shell is fixedly connected with a porous pipe passing through the filtering element. Both the porous pipe and the guiding pipe are used for transmitting oleic acid. A valve is installed on the second sliding shell. Two elastic elements are hermetically slidably connected to the first sliding shell. The guiding pipe passes through and is hermetically slidably connected to two adjacent elastic elements;

[0012] The support assembly is arranged on the first sliding shell. The number of the support assemblies is the same as that of the elastic elements and is used for supporting adjacent elastic elements.

[0013] Preferably, the support assembly includes:

[0014] The third sliding frame is slidably connected to the first sliding shell and is fixedly connected with the adjacent elastic element. The third sliding frame is fixedly connected with mirror-image and spaced fixed frames. The first sliding shell is fixedly connected with a shielding plate for limiting the elastic element. The fixed frame is used for supporting adjacent elastic elements;

[0015] The sliding plate is fixedly connected to the third sliding frame. The sliding plate is fixedly connected with two adjacent fixed frames. The sliding plate is hermetically slidably connected with the adjacent guiding pipe.

[0016] Preferably, it further includes:

[0017] The first driving assembly is arranged on the carrier and is used for driving all the third sliding frames to move actively. The first driving assembly includes:

[0018] The first connecting pipe is fixedly connected to the carrier. Symmetrically distributed fixed shells are fixedly connected inside the first sliding shell. The fixed shells are slidably connected with symmetrically and spaced sliding parts. The sliding parts are used for pushing adjacent elastic elements. The first connecting pipe passes through all the first sliding shells and is communicated with all the fixed shells. Two deformation assemblies are arranged on the fixed shells. The deformation assemblies are used for deforming adjacent elastic elements.

[0019] Preferably, both sides of the second sliding shell are recessed inward.

[0020] Preferably, the deformation assembly includes:

[0021] The first connecting frames are distributed at intervals and are consistent in number with the sliding members on the fixed housing, and are respectively fixedly connected to adjacent sliding members. The first connecting frames are rotatably connected to symmetrically distributed second connecting frames. The first connecting frames are fixedly connected to adjacent elastic members. The second connecting frames are slidably connected to third connecting frames. A tension spring is fixedly connected between the third connecting frames and adjacent second connecting frames. The third connecting frames are rotatably connected to adjacent fixed frames. The third connecting frames are in contact with adjacent elastic members. The first connecting frames are fixedly connected to symmetrically distributed limiting frames, and the limiting frames are used to limit adjacent second connecting frames.

[0022] Preferably, symmetrically distributed sliding frames are slidably connected in the second sliding housing. The sliding frames are provided with trapezoidal grooves distributed at intervals. The sliding frames are in contact with adjacent filter elements. The sliding frames are fixedly connected to bellows fixedly connected and communicated with adjacent second sliding housings. A limiting assembly is arranged on the second sliding housing for limiting the state of the filter elements.

[0023] Preferably, the middle parts of the trapezoidal grooves on the sliding frames are on the same horizontal plane as adjacent first connecting frames.

[0024] Preferably, the limiting assembly includes:

[0025] Symmetric and rectangular arrayed limiting members, all fixedly connected to adjacent filter elements. The limiting members are detachably connected to limiting seats. The sliding frames are provided with rectangular arrayed limiting grooves. The limiting seats are in contact with adjacent filter elements. The sides of the limiting seats far from adjacent limiting members are located in adjacent limiting grooves.

[0026] Preferably, the diameter of the limiting grooves is larger than the diameter of the limiting seats, so that the limiting seats can slide in adjacent limiting grooves. The limiting seats are fixedly connected to flexible membranes fixedly connected to adjacent sliding frames.

[0027] Preferably, it further includes:

[0028] A second driving assembly, arranged on the bearing frame, for driving all the sliding frames to move. The second driving assembly includes:

[0029] A second connecting pipe, fixedly connected to the bearing frame. Symmetrically distributed elastic liquid sacs are fixedly connected in the second sliding housing. The elastic liquid sacs are fixedly connected to adjacent sliding frames. The second connecting pipe passes through all the second sliding housings and is communicated with all the elastic liquid sacs.

[0030] The beneficial effects of the present invention are as follows: The present invention innovatively adopts a horizontal translation method to extrude the impurities on the filter cloth. Not only can the pressure distribution be highly uniform during the extrusion process, but also it can ensure that the impurities on the filter cloth are comprehensively and evenly extruded. This method effectively solves the problems of excessive extrusion of the middle impurities and insufficient extrusion of the inner oleic acid of the outer impurities caused by uneven pressure distribution in traditional extrusion equipment, thereby significantly improving the recovery rate of oleic acid, optimizing the production process, and enhancing the overall production efficiency and economic benefits.

[0031] The present invention changes the way of extruding the filter cloth by the extrusion equipment, so that when the extrusion equipment extrudes the filter cloth, it first disperses and extrudes the impurities in a multi-region manner, enabling the oleic acid on the impurities to be quickly extruded, reducing the pressure on the impurities received by the filter cloth, thereby reducing the possibility of the impurities adhering to the filter cloth. And through the multi-region dispersed extrusion, it ensures that the pressure distribution on the filter cloth is more uniform, thereby achieving uniform extrusion of the impurities. After the extrusion is completed, it first withdraws in a multi-region manner and finally withdraws as a whole, so that when the extrusion equipment withdraws, it actively changes its shape when withdrawing, enabling the impurities to be actively separated from the extrusion equipment and the filter cloth at this stage, thereby reducing the adhesion of the impurities on the extrusion equipment and the filter cloth, and thus reducing the subsequent cleaning time. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a three-dimensional structure diagram of the present invention;

[0033] Figure 2 is a three-dimensional structure diagram of the fixing plate of the present invention;

[0034] Figure 3 is a partial three-dimensional structure diagram of the carrier of the present invention;

[0035] Figure 4 is a three-dimensional structure diagram of the first sliding shell and the second sliding shell of the present invention;

[0036] Figure 5 is a cross-sectional view of the three-dimensional structure of the second sliding shell of the present invention;

[0037] Figure 6 is a cross-sectional view of the three-dimensional structure of the first sliding shell of the present invention;

[0038] Figure 7 is a cross-sectional view of the three-dimensional structure of the guiding pipe of the present invention;

[0039] Figure 8 is a cross-sectional view of the three-dimensional structure of the fixed shell of the present invention;

[0040] Figure 9 is a cross-sectional view of the three-dimensional structure of the third connecting frame of the present invention;

[0041] Figure 10Schematic cross-sectional view of the three-dimensional structure after the movement of the sliding frame of the present invention;

[0042] Figure 11 Schematic three-dimensional structure diagram of the elastic liquid sac of the present invention;

[0043] Figure 12 Schematic cross-sectional view of the three-dimensional structure of the porous tube of the present invention;

[0044] Figure 13 Schematic cross-sectional view of the three-dimensional structure of the limiting member and the limiting seat of the present invention.

[0045] The marks in the figure are: 10: carrier frame, 11: collection pool, 12: liquid guide pipe, 13: liquid delivery pipe, 14: driving member, 15: moving member, 16: fixing plate, 17: first sliding shell, 171: guiding pipe, 18: second sliding shell, 181: filtering member, 182: porous pipe, 19: valve, 20: elastic member, 21: third sliding frame, 22: fixing frame, 23: sliding plate, 30: first connecting frame, 31: second connecting frame, 32: third connecting frame, 33: limiting frame, 40: fixing shell, 41: sliding member, 42: first connecting pipe, 50: sliding frame, 60: limiting member, 61: limiting seat, 62: limiting groove, 70: elastic liquid sac, 71: second connecting pipe. Detailed implementation manners

[0046] The following will further illustrate the present invention in conjunction with specific embodiments. It should also be noted that unless otherwise clearly defined and limited, terms such as "arranged" and "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0047] To solve the problem that when the existing extrusion equipment applies pressure to the impurities on the filter cloth, it expands in an arc shape, resulting in the same arc shape after forming, causing the impurities in the middle of the filter cloth to be extruded, and the oleic acid in the impurities on the outside cannot be fully extruded, resulting in a low recovery rate of oleic acid. The present invention uses a horizontal translation method to extrude the impurities on the filter cloth, and the pressure distribution can be kept uniform during the extrusion process, so that the impurities on the filter cloth are evenly extruded, thereby ensuring that the oleic acid in the impurities can be fully extruded.

[0048] Embodiment 1: A filtering device for the production of high-purity oleic acid, as Figures 1 - 7As shown in the figure, it includes: a carrier 10, a collection pool 11 is provided on the carrier 10; a liquid guide pipe 12, fixedly connected to the carrier 10; a liquid delivery pipe 13, fixedly connected to one side of the carrier 10; a fixing plate 16, fixedly connected to the carrier 10, and the liquid delivery pipe 13 penetrates through the fixing plate 16; several first sliding shells 17 and several second sliding shells 18, all slidingly connected to the carrier 10, all the second sliding shells 18 and all the first sliding shells 17 are staggered, both sides of the second sliding shell 18 are recessed inward, a guiding pipe 171 is fixedly connected to the first sliding shell 17, a filtering member 181 is detachably connected to the second sliding shell 18, a porous pipe 182 passing through the filtering member 181 is fixedly connected to the second sliding shell 18, both the porous pipe 182 and the guiding pipe 171 are used for transferring oleic acid, a valve 19 is installed on the second sliding shell 18, two elastic members 20 are sealingly and slidingly connected to the first sliding shell 17, and the guiding pipe 171 passes through and is sealingly and slidingly connected to the two adjacent elastic members 20; a support assembly, arranged on the first sliding shell 17, the number of the support assemblies is the same as that of the elastic members 20, and is used for supporting the adjacent elastic members 20.

[0049] In the above solution, only the facing sides of the first sliding shells 17 on the left and right sides can be installed with parts, and the back sides are all solids, which is used to reduce the number of parts. An operating table is arranged on the left side of the carrier 10, and the operating table is used to connect all the power components mentioned in the present invention. A collection bucket is arranged at the lower part on the right side of the liquid guide pipe 12. During use, the right side of the liquid delivery pipe 13 is communicated with the liquid outlet of an external oleic acid storage device. A driving member 14 is fixedly connected to the left side of the carrier 10, and a moving member 15 is fixedly connected to the telescopic end of the driving member 14. The moving member 15 is used to squeeze the first sliding shell 17 on the left side to move the first sliding shell 17 on the left side. The driving member 14 is a hydraulic push rod in the existing equipment (only for example, not limited). The filtering member 181 is a filter cloth in the existing equipment. An external moving device is installed on the upper side of the carrier 10, and the external moving device is used to separate the mutually attached first sliding shell 17 and the second sliding shell 18 (when filtering oleic acid, the first sliding shell 17 and the second sliding shell 18 will be attached). The inner diameter of the guiding pipe 171 is the same as the outer diameter of the porous pipe 182. After the first sliding shell 17 and the adjacent filtering member 181 are attached, a part of the porous pipe 182 is inserted into the adjacent guiding pipe 171. At this time, the porous pipe 182 and the adjacent guiding pipe 171 are communicated. The elastic member 20 is an elastic film. In the present invention, there are two elastic members 20 on each first sliding shell 17, and they are respectively located on the left and right sides of the first sliding shell 17.

[0050] As Figure 6 and Figures 8 - 10As shown in the figure, the support assembly includes: a third sliding frame 21, slidably connected to the first sliding housing 17 and fixedly connected to the adjacent elastic member 20. The third sliding frame 21 is fixedly connected with mirror-image and spaced fixed frames 22. The first sliding housing 17 is fixedly connected with a baffle for limiting the elastic member 20, and the fixed frame 22 is used to support the adjacent elastic member 20; a sliding plate 23, fixedly connected to the third sliding frame 21. The sliding plate 23 is fixedly connected to the adjacent two fixed frames 22 and is in sealed sliding connection with the adjacent guide pipe 171.

[0051] In the above solution, the connection between the third sliding frame 21 and the adjacent first sliding housing 17 is a sealed sliding connection. This sealed sliding connection can be understood as that the third sliding frame 21 is in sealed sliding connection with the adjacent first sliding housing 17 through a sealing strip, or it can be understood as that the third sliding frame 21 is fixedly connected with the adjacent first sliding housing 17 through a telescopic film. The above examples are used to keep the first sliding housing 17 and the third sliding frame 21 sealed when the third sliding frame 21 slides along the adjacent first sliding housing 17.

[0052] As Figure 1 、 Figure 4 and Figures 6 - 9 As shown in the figure, it further includes: a first driving assembly, arranged on the carrier 10 and used to drive all the third sliding frames 21 to move actively. The first driving assembly includes: a first connecting pipe 42, fixedly connected to the carrier 10. Symmetrically distributed fixed shells 40 are fixedly connected inside the first sliding housing 17. The fixed shells 40 are slidably connected with symmetrically and spaced sliding members 41. The sliding members 41 are used to push the adjacent elastic members 20. The first connecting pipe 42 passes through all the first sliding housings 17 and is communicated with all the fixed shells 40. Two deformation assemblies are arranged on the fixed shells 40, and the deformation assemblies are used to deform the adjacent elastic members 20.

[0053] In the above solution, a communicating pipe is fixedly connected and communicated between two adjacent fixed shells 40. The first connecting pipe 42 is composed of a main pipe and several sub-pipes. The number of sub-pipes on the first connecting pipe 42 is the same as the number of the first sliding housings 17. The sub-pipes on the first connecting pipe 42 are fixedly connected to the adjacent first sliding housings 17. The fixed shell 40 is in sealed sliding connection with the sliding member 41. During use, an external first pressure control device is connected to the right side of the main pipe inside the first connecting pipe 42. The external first pressure control device can be a diaphragm pump, a Roots pump, a sliding vane pump, a rotary vane pump, etc. In this embodiment, the sliding member 41 and the adjacent elastic member 20 are detachably connected, so that the adjacent elastic member 20 can be driven to move during the movement of the sliding member 41. The second sliding housing 18 is recessed inward so that when the elastic member 20 extrudes impurities, the impurities can gather from the outside to the inside of the second sliding housing 18, thereby realizing the pre-extrusion of the impurities.

[0054] Working principle: Before filtering oleic acid, the staff connect the right side of the liquid delivery pipe 13 to the liquid outlet of the external oleic acid storage device (this connection method is only for illustrative purposes and not a limitation), then connect the right side of the first connecting pipe 42 to the air outlet of the external first pressure control device, then place the collection bucket below the right side of the liquid guide pipe 12, and finally install the external mobile device on the upper side of the carrier 10 to complete the preparatory actions before filtering oleic acid.

[0055] After completing the preparatory actions before filtering oleic acid, the staff push the moving part 15 to the right through the driving part 14, so that the moving part 15 slides to the right along the upper side of the carrier 10. After the moving part 15 moves to contact the adjacent first sliding shell 17, the moving part 15 drives the adjacent first sliding shell 17 to move synchronously, so that the first sliding shell 17 fits with the adjacent filter part 181 and drives the adjacent second sliding shell 18 to move to the right (after the first sliding shell 17 fits with the adjacent filter part 181, the left side of the porous pipe 182 enters the right side of the guide pipe 171 to realize the connection between the porous pipe 182 and the guide pipe 171, and at this time the guide pipe 171 will not block the holes on the porous pipe 182), and then the second sliding shell 18 squeezes the adjacent first sliding shell 17 on the right side to make it move to the right synchronously. The subsequent moving processes of the first sliding shell 17 and the second sliding shell 18 can be repeated as above.

[0056] When the rightmost first sliding shell 17 moves to fit with the fixed plate 16, the driving part 14 no longer drives the moving part 15 to move. At this time, all the first sliding shells 17 and the second sliding shells 18 are in a fitting state, all the porous pipes 182 and the guide pipes 171 are interconnected, and the rightmost guide pipe 171 is connected to the liquid delivery pipe 13. Finally, the external oleic acid storage device sends oleic acid into the guide pipe 171 through the liquid delivery pipe 13, and the oleic acid slides along the guide pipe 171 and the adjacent porous pipes 182;

[0057] Now take the moving state of the parts in the first sliding shell 17 and the second sliding shell 18 as an example (for reference, see Figure 4 ), after the oleic acid enters the porous pipe 182, it enters between the filter part 181 and the adjacent elastic part 20. At this time, the oleic acid passes through the filter part 181 and enters between the second sliding shell 18 and the adjacent filter part 181, and then flows out through the adjacent valve 19. The oleic acid flowing out of the valve 19 immediately flows into the liquid guide pipe 12 and flows into the collection bucket through the liquid guide pipe 12, thus completing the filtration of the oleic acid (because the gaps of the filter parts 181 used for filtering high-purity oleic acid are relatively dense, different filter parts 181 with different gaps can be preferentially replaced according to the actual required purity).

[0058] After the oleic acid passes through the filter part 181, the impurities are left between the filter part 181 and the adjacent elastic part 20.

[0059] After the filtration of the oleic acid this time is completed, the liquid supply pipe 13 stops feeding (during use, the staff can add a one-way valve in the liquid supply pipe 13 according to the actual situation. After the liquid supply pipe 13 stops feeding, the one-way valve in the liquid supply pipe 13 remains closed, and the liquid supply pipe 13 remains in a closed state).

[0060] After the filtration of the oleic acid this time is completed, the staff injects gas into the first connecting pipe 42 through an external first pressure control device, so that the gas enters all the fixed shells 40 through the first connecting pipe 42, causing all the sliding parts 41 to move along the adjacent fixed shells 40. Now, taking Figure 7 the movement mode of the right-side parts in [example] as an example:

[0061] During the process of all the sliding parts 41 on the right side of the first sliding shell 17 moving to the right, they contact the adjacent elastic parts 20 and drive the elastic parts 20 and the adjacent third sliding frames 21 to move to the right. During the movement of the elastic parts 20 and the adjacent third sliding frames 21, the impurities on the adjacent side are squeezed, so that the oleic acid in the impurities enters the adjacent second sliding shell 18 through the adjacent filter parts 181, thereby completing the uniform squeezing of the impurities.

[0062] During the process of the elastic parts 20 and the adjacent third sliding frames 21 squeezing the impurities on the adjacent side, due to the inward depression of the second sliding shell 18, the adjacent filter parts 181 are also inwardly depressed, and the impurities can gather towards the depressed parts of the filter parts 181 during the squeezing process, thereby realizing the compression of the impurities on the filter parts 181 and reducing the dispersion degree of the impurities on the filter parts 181.

[0063] When the third sliding frame 21 drives the elastic part 20 to move until the elastic part 20 contacts the baffle on the adjacent first sliding shell 17, the outer sides of the third sliding frame 21 and the adjacent elastic part 20 no longer move. At this time, all the sliding parts 41 on the right side of the first sliding shell 17 continue to squeeze the elastic part 20, causing the middle of the elastic part 20 to deform and then squeezing the impurities on the right side, thereby realizing the secondary squeezing of the impurities, further compressing the impurities and reducing the oleic acid in the impurities. Through the above-mentioned pre-squeezing and secondary squeezing, the oleic acid is repeatedly squeezed, and the uniform squeezing of the oleic acid is realized.

[0064] After the squeezing of the impurities is completed, the staff extracts the gas in the first connecting pipe 42 through an external first pressure control device, thereby reducing the pressure in all the fixed shells 40, causing all the sliding parts 41 to drive all the elastic parts 20 to reset. After the elastic parts 20 are reset to the undeformed state, all the sliding parts 41 continue to drive the adjacent elastic parts 20 to reset, so that the elastic parts 20 no longer contact the baffle on the adjacent first sliding shell 17, and the sliding parts 41 move to Figure 8After reaching the state in, the elastic member 20 and the third sliding frame 21 are reset to the initial state, and at this time, the extrusion of impurities is completed.

[0065] After the extrusion of impurities is completed, the driving member 14 drives the moving member 15 to reset and move to Figure 1 the position, so that the moving member 15 slides leftward along the carrier 10 and no longer extrudes the adjacent first sliding shell 17. Subsequently, the first sliding shell 17 and the second sliding shell 18 are gradually pulled by an external moving device to Figure 1 the state in. During the process of the separation of the first sliding shell 17 and the adjacent second sliding shell 18, the impurities fall into the collection pool 11 from between the two, thereby completing the collection of impurities. When it is necessary to filter oleic acid again, the above actions can be repeated.

[0066] When the extrusion device in the existing plate and frame filter press applies an extrusion force to the impurities on the filter cloth, the impurities will shrink into a relatively compact state. When the extrusion device stops working, the impurities will adhere to the surface of the extrusion device and the filter cloth, which will increase the cleaning time and difficulty. Frequent cleaning and maintenance will accelerate the wear of the equipment and shorten the service life of the equipment. Therefore, the present invention adopts a method of changing the way the extrusion device extrudes the filter cloth, and the specific steps are as follows:

[0067] 1. Multi-region dispersed extrusion: When extruding the filter cloth, first disperse and extrude the impurities in a multi-region manner. This method can reduce the local pressure of the impurities on the filter cloth, thereby reducing the possibility of the impurities adhering to the filter cloth. Through the multi-region dispersed extrusion, it is ensured that the pressure distribution on the filter cloth is more uniform, so as to achieve uniform extrusion of the impurities;

[0068] 2. Multi-region withdrawal: After the extrusion is completed, first withdraw the extrusion device in a multi-region manner, and then withdraw it in an overall manner. This multi-region withdrawal method can change the shape of the extrusion device when withdrawing, so that the impurities actively separate from the extrusion device and the filter cloth at this stage, thereby reducing the adhesion of the impurities on the extrusion device and the filter cloth.

[0069] Through the above method, the present invention can significantly reduce the adhesion of impurities on the filter cloth, reduce the subsequent cleaning time, and improve the production efficiency and product quality.

[0070] Embodiment 2: On the basis of Embodiment 1, as Figure 6 and Figures 8 - 10As shown in the figure, the deformation component includes: the first connecting frames 30 distributed at intervals, which are the same in number as the sliding members 41 on the fixed housing 40 and are respectively fixedly connected to adjacent sliding members 41. The first connecting frames 30 are rotatably connected to the symmetrically distributed second connecting frames 31. The first connecting frames 30 are fixedly connected to the adjacent elastic members 20. The second connecting frames 31 are slidably connected to the third connecting frames 32. A tension spring is fixedly connected between the third connecting frames 32 and the adjacent second connecting frames 31. The third connecting frames 32 are rotatably connected to the adjacent fixed frames 22. The third connecting frames 32 are in contact with the adjacent elastic members 20. The first connecting frames 30 are fixedly connected to the symmetrically distributed limiting frames 33, and the limiting frames 33 are used to limit the adjacent second connecting frames 31.

[0071] In the above solution, in the present invention, there are four first connecting frames 30 distributed in a linear array on one side of the first sliding housing 17. The two upper first connecting frames 30 are respectively fixedly connected to the two upper sliding members 41, and the two lower first connecting frames 30 are respectively fixedly connected to the two lower sliding members 41. The limiting frames 33 are used to limit the state of the adjacent second connecting frames 31. When the first connecting frames 30 adjacent to the fixed frames 22 are in the same vertical plane, the limiting frames 33 are in contact with the adjacent second connecting frames 31.

[0072] As Figure 5 and Figures 10 - 13 As shown in the figure, symmetrically distributed sliding frames 50 are slidably connected in the second sliding housing 18. The sliding frames 50 are provided with trapezoidal grooves distributed at intervals. The sliding frames 50 are in contact with the adjacent filter elements 181. The sliding frames 50 are fixedly connected to bellows that are fixedly connected to and communicate with the adjacent second sliding housing 18. A limiting component is provided on the second sliding housing 18 for limiting the state of the filter elements 181. The middle parts of the trapezoidal grooves on the sliding frames 50 are in the same horizontal plane as the adjacent first connecting frames 30.

[0073] In the above solution, the sliding frames 50 are hermetically slidably connected to the second sliding housing 18. It can be understood that the sliding frames 50 are hermetically slidably connected to the adjacent second sliding housing 18 through sealing strips, or it can be understood that the sliding frames 50 are fixedly connected to the adjacent second sliding housing 18 through telescopic membranes. The above examples are all used to keep the sliding frames 50 and the second sliding housing 18 sealed when the sliding frames 50 slide along the adjacent second sliding housing 18. Vertical holes are provided on the sliding frames 50 for guiding oleic acid. The bellows on the sliding frames 50 are used to enable the sliding frames 50 to still guide oleic acid during the process of sliding along the adjacent second sliding housing 18.

[0074] As Figures 11 - 13As shown in the figure, the limiting component includes: limiting members 60 that are symmetric and arranged in a rectangular array, and are fixedly connected to adjacent filter elements 181. The limiting members 60 are detachably connected to limiting seats 61. The sliding frame 50 is provided with limiting grooves 62 arranged in a rectangular array. The limiting seats 61 are in contact with adjacent filter elements 181. One side of the limiting seat 61 away from the adjacent limiting member 60 is located in the adjacent limiting groove 62. The diameter of the limiting groove 62 is larger than the diameter of the limiting seat 61, so that the limiting seat 61 can slide in the adjacent limiting groove 62. The limiting seat 61 is fixedly connected with a flexible film that is fixedly connected to the adjacent sliding frame 50.

[0075] In the above solution, when the limiting member 60 is inserted into the adjacent limiting seat 61, the adjacent filter element 181 is limited, so that the filter element 181 fits with the adjacent second sliding shell 18.

[0076] As Figure 1 、 Figures 3 - 5 、 Figure 11 and Figure 12 As shown in the figure, it further includes: a second driving component, which is arranged on the carrier 10 and is used to drive all the sliding frames 50 to move. The second driving component includes: a second connecting pipe 71, which is fixedly connected to the carrier 10. Symmetrically distributed elastic liquid sacs 70 are fixedly connected inside the second sliding shell 18. The elastic liquid sacs 70 are fixedly connected to the adjacent sliding frames 50. The second connecting pipe 71 passes through all the second sliding shells 18 and is communicated with all the elastic liquid sacs 70.

[0077] In the above solution, the second connecting pipe 71 is composed of a main pipe and several sub-pipes. The number of sub-pipes on the second connecting pipe 71 is the same as the number of second sliding shells 18. The sub-pipes on the second connecting pipe 71 are fixedly connected to the adjacent second sliding shells 18. In use, an external second pressure control device is connected to the right side of the main pipe inside the second connecting pipe 71. The external second pressure control device can be a diaphragm pump, a Roots pump, a sliding vane pump, a rotary vane pump, etc.

[0078] Working principle: Before filtering oleic acid, the staff connects the right side of the second connecting pipe 71 to the air outlet of the external second pressure control device.

[0079] When it is necessary to extrude impurities, the first connecting pipe 42 injects gas into all the fixed shells 40, increasing the pressure inside the fixed shells 40 and causing the adjacent sliding parts 41 to move outward. Taking the movement of the parts in Figure 9 as an example, during the process of the sliding part 41 moving to the right, it drives the adjacent elastic part 20 and the adjacent third sliding frame 21 to move to the right through the first connecting frame 30, the adjacent second connecting frame 31, the adjacent third connecting frame 32 and the adjacent fixed frame 22, so that the elastic part 20 extrudes the impurities on the right in a translational state.

[0080] When the elastic member 20 and the adjacent third sliding frame 21 move to contact the baffle plate on the first sliding shell 17, the elastic member 20, the adjacent third sliding frame 21 and the adjacent fixed frame 22 stop moving. At this time, the sliding member 41 continues to drive the adjacent first connecting frame 30 to move to the right. During the movement of the first connecting frame 30, the adjacent second connecting frame 31 swings along it and is relatively displaced with the adjacent third connecting frame 32 (the adjacent tension spring is pulled when the second connecting frame 31 and the third connecting frame 32 are relatively displaced). As the first connecting frame 30 moves, the adjacent elastic member 20 is deformed and gradually changes into a folded shape.

[0081] When the second connecting frame 31 and the third connecting frame 32 are folded ( Figure 10 It can be clearly concluded that the first connecting pipe 42 no longer injects gas into all the fixed shells 40. At this time, the staff injects gas into the second connecting pipe 71 through the external second pressure control device, so that the gas in the second connecting pipe 71 enters all the elastic liquid capsules 70 and expands the elastic liquid capsules 70. During the expansion of the elastic liquid capsules 70, the adjacent sliding racks 50 are squeezed. During the movement of the sliding rack 50, all the limiting members 60, all the limiting seats 61 and the middle part of the filter 181 thereon are driven to move. During the movement of the sliding rack 50, all the limiting members 60 and the filter 181 thereon are gradually separated from the recessed part of the adjacent second sliding shell 18, so that the middle part of the filter 181 is in a loose state. When the middle part of the filter 181 is loose, the adjacent limiting seats 61 are driven to move in the adjacent limiting grooves 62.

[0082] When the sliding frame 50 moves to contact the loose part in the middle of the filter element 181, the filter element 181 is squeezed by the sliding frame 50, so that it fits with the trapezoidal groove on the sliding frame 50, so that when the sliding frame 50 squeezes the impurities, it also extrudes in a folded manner. The sliding frame 50 moves to fit with the adjacent second sliding shell 18 and then stops moving (the squeezed oleic acid flows into the adjacent second sliding shell 18 through the bellows on the sliding frame 50, thereby completing the guidance of the oleic acid). At this time, the folded shape formed by the second connecting frame 31 and the third connecting frame 32 and the folded shape formed by the sliding frame 50 itself exerts a bidirectional squeezing force on the impurities between the two, and the folded shape formed by the two makes the impurities evenly squeezed while increasing the area where the impurities are squeezed, thereby achieving dispersed squeezing of the impurities.

[0083] After the extrusion of the impurities is completed, the external first pressure control device reduces the pressure in all the fixed shells 40 through the first connecting pipe 42, and the external second pressure control device reduces the pressure in all the elastic liquid sacs 70 through the second connecting pipe 71, so that the sliding member 41 and all the sliding frames 50 are reset and slide simultaneously. During the reset process of the sliding member 41, the adjacent first connecting frame 30 is driven to reset, causing the second connecting frame 31 to swing along the adjacent first connecting frame 30 to reset. During the reset swing of the second connecting frame 31, it moves towards the adjacent third connecting frame 32 (at this time, the adjacent tension springs are in a gradually tightened state).

[0084] When the second connecting frame 31 and the adjacent third connecting frame 32 swing to the state shown in Figure 9 , the elastic member 20 returns to the state shown in Figure 9 . The limiting frame 33 fits with the adjacent second connecting frame 31. At this time, the second connecting frame 31 and the third connecting frame 32 have been converted from a folded shape to a vertical state. Through the switching of the above states, the impurities that have been extruded into a folded shape are actively separated from the elastic member 20. During the movement of the sliding frame 50, the adjacent filter element 181 is driven to reset by the adjacent limiting member 60, so that the filter element 181 gradually returns to the state shown in Figure 12 (at this time, the limiting member 60 and the adjacent limiting seat 61 move and reset along the adjacent limiting groove 62). Through the reset of the filter element 181, it is actively separated from the impurities, and the subsequent steps can be repeated as described above.

[0085] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form. Any technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A filtering device for producing high-purity oleic acid, characterized in that: include: A carrier frame (10), wherein the carrier frame (10) is provided with a collection tank (11); A liquid guiding tube (12) fixedly connected to the supporting frame (10); A liquid delivery pipe (13) fixedly connected to one side of the supporting frame (10); A fixed plate (16) is fixedly connected to the carrier frame (10), and the liquid delivery pipe (13) passes through the fixed plate (16); A plurality of first sliding shells (17) and a plurality of second sliding shells (18) are all slidably connected to the carrier frame (10), all the second sliding shells (18) and all the first sliding shells (17) are staggeredly distributed, the first sliding shell (17) is fixedly connected with a guide tube (171), the second sliding shell (18) is detachably connected with a filter element (181), the second sliding shell (18) is fixedly connected with a porous tube (182) passing through the filter element (181), the porous tube (182) and the guide tube (171) are both used to transfer oleic acid, the second sliding shell (18) is installed with a valve (19), the first sliding shell (17) is sealingly slidably connected with two elastic elements (20), the guide tube (171) passes through two adjacent elastic elements (20) and is sealingly slidably connected thereto; A support assembly is arranged on the first sliding shell (17), the number of the support assembly is consistent with the number of the elastic members (20), and is used to support adjacent elastic members (20).

2. A filtering device for producing high-purity oleic acid according to claim 1, characterized in that: The support assembly comprises: a third sliding frame (21) slidably connected to the first sliding shell (17) and fixedly connected to the adjacent elastic member (20); the third sliding frame (21) is fixedly connected to a fixed frame (22) which is mirror-imaged and spaced apart; the first sliding shell (17) is fixedly connected to a shielding plate for limiting the position of the elastic member (20); and the fixed frame (22) is used to support the adjacent elastic member (20); The sliding plate (23) is fixedly connected to the third sliding frame (21), the sliding plate (23) is fixedly connected to the two adjacent fixing frames (22), and the sliding plate (23) is sealed and slidably connected to the adjacent guide tubes (171).

3. A filtering device for producing high-purity oleic acid according to claim 2, characterized in that include: A first driving component is arranged on the carrier (10) and is used to drive all the third sliding frames (21) to move actively. The first driving component comprises: A first connecting tube (42) is fixedly connected to the supporting frame (10); a symmetrically distributed fixed shell (40) is fixedly connected inside the first sliding shell (17); the fixed shell (40) is slidably connected to symmetrically and spacedly distributed sliding members (41); the sliding members (41) are used to push adjacent elastic members (20); the first connecting tube (42) passes through all the first sliding shells (17) and is connected to all the fixed shells (40); two deformation components are arranged on the fixed shell (40); the deformation components are used to deform adjacent elastic members (20).

4. The filtering device for producing high-purity oleic acid according to claim 3, characterized in that: Both sides of the second sliding shell (18) are recessed inwards.

5. A filtering device for producing high-purity oleic acid according to claim 3, characterized in that: The deformation component comprises: The number of the first connecting frames (30) distributed at intervals is consistent with the number of the sliding members (41) on the fixed shell (40), and they are respectively fixed to the adjacent sliding members (41); the first connecting frame (30) is rotatably connected to the second connecting frames (31) distributed symmetrically; the first connecting frame (30) is fixed to the adjacent elastic member (20); the second connecting frame (31) is slidably connected to the third connecting frame (32); a tension spring is fixed between the third connecting frame (32) and the adjacent second connecting frame (31); the third connecting frame (32) is rotatably connected to the adjacent fixed frame (22); the third connecting frame (32) contacts the adjacent elastic member (20); the first connecting frame (30) is fixed to the symmetrically distributed limiting frames (33); the limiting frames (33) are used to limit the adjacent second connecting frames (31).

6. A filtering device for producing high-purity oleic acid according to claim 5, characterized in that: The second sliding shell (18) is slidably connected with a symmetrically distributed sliding frame (50), the sliding frame (50) is provided with trapezoidal grooves distributed at intervals, the sliding frame (50) is in contact with the adjacent filter element (181), the sliding frame (50) is fixedly connected with a bellows fixedly connected to and communicating with the adjacent second sliding shell (18), and a limit position assembly is provided on the second sliding shell (18) for limiting the state of the filter element (181).

7. A filtering device for producing high-purity oleic acid according to claim 6, characterized in that: The middle of the trapezoidal groove on the sliding frame (50) is located on the same horizontal plane as the adjacent first connecting frame (30).

8. A filtering device for producing high-purity oleic acid according to claim 6, characterized in that: The limiting component comprises: The symmetrical and rectangular array of limiting members (60) are all fixedly connected to the adjacent filter members (181); the limiting members (60) are detachably connected to the limiting seats (61); the sliding frame (50) is provided with rectangular array of limiting grooves (62); the limiting seats (61) are in contact with the adjacent filter members (181); and the side of the limiting seats (61) away from the adjacent limiting members (60) is located in the adjacent limiting groove (62).

9. A filtering device for producing high-purity oleic acid according to claim 8, characterized in that: The diameter of the limiting groove (62) is greater than the diameter of the limiting seat (61), so as to enable the limiting seat (61) to slide in the adjacent limiting groove (62); the limiting seat (61) is fixedly connected to a flexible membrane fixedly connected to the adjacent sliding frame (50).

10. A filtering device for producing high-purity oleic acid according to claim 9, characterized in that include: A second driving assembly is arranged on the carrier (10) and is used to drive all the sliding frames (50) to move, and the second driving assembly comprises: The second connecting tube (71) is fixedly connected to the supporting frame (10), and symmetrically distributed elastic liquid bags (70) are fixedly connected in the second sliding shell (18). The elastic liquid bags (70) are fixedly connected to the adjacent sliding frame (50), and the second connecting tube (71) passes through all the second sliding shells (18) and is connected to all the elastic liquid bags (70).

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