A bio-oil hydrogenation reactor filtration device

Abstract

The present invention relates to the technical field of separation of bio-oils and fats, and specifically discloses a bio-oil hydrogenation reactor filter device, wherein a housing has an oil inlet chamber and a filter chamber separated from each other, a carrying container is fixedly arranged in the filter chamber, and a hollow portion for passing oils and fats is formed on its peripheral wall; a filter bag is arranged in the carrying container, and its lower portion is gathered, the filter bag is connected to the oil inlet chamber, a scraper plate is arranged in the filter bag, and its edge portion contacts the inner surface of the filter bag, and a plurality of rolling parts are distributed along the circumference of the scraper plate and are all rotatably embedded in the scraper plate; a driving component for controlling the vertical movement of the scraper plate is arranged in the carrying container, and when the scraper plate presses the lower portion of the filter bag against the bottom wall of the carrying container, the driving component can also control the rotation of the scraper plate. The bio-oil hydrogenation reactor filter device of the present invention can evenly and thoroughly squeeze impurities of different particle sizes through the rolling action of the rolling part, thereby reducing the waste of oils and fats.

Description

Technical Field

[0001] The invention relates to the technical field of separation of bio-oils and fats, and in particular to a filtering device for a bio-oils and fats hydrogenation reactor. Background Art

[0002] Filtration of bio-grease is an important process step to remove impurities from the grease and improve the purity and quality of the grease. This process usually involves physical methods such as pressure filtration, gravity filtration or centrifugal filtration to separate solid particles and larger impurities in the grease. Before filtration, the bio-grease generally needs to be pre-treated, such as heating, adding chemical reagents, etc., to improve its fluidity, reduce viscosity or promote the coagulation of impurities.

[0003] A Chinese patent document with authorization announcement number CN221412379U discloses a grease filtering device, including a tank body and a filter tank arranged in the tank body, filter holes are arranged on the outer wall and bottom of the filter tank, a filter bag for filtering impurities in the grease is arranged in the filter tank, the filter bag is laid flat on the inner wall of the filter tank, a top cover is provided at the top tank mouth of the filter tank, a pressure plate that can slide up and down is provided in the top cover, and a threaded lifting mechanism for controlling the sliding of the pressure plate is provided on the top cover, when the threaded lifting mechanism controls the pressure plate to descend, the pressure plate can squeeze the impurities in the filter bag, thereby forcing the residual grease in the impurities to flow out, reducing the waste of grease.

[0004] However, the pressing plate uses its flat surface to press the impurities. When there are particles of different sizes in the impurities, the pressing plate presses the large particles more heavily and the small particles less lightly, so that the impurities are not pressed evenly and the grease is not discharged completely. Summary of the invention

[0005] The invention provides a filtering device for a bio-oil hydrogenation reactor, aiming to solve the problem in the related art that the pressure plate extrude impurities of different particle sizes unevenly and the grease is not discharged completely.

[0006] The filtering device of the bio-oil hydrogenation reactor of the present invention comprises a shell, a filtering mechanism and a scraping mechanism, wherein the shell has an oil inlet cavity and a filtering cavity separated from each other, and the cavity wall of the oil inlet cavity is provided with an oil inlet for adding oil and an air inlet for adding hydrogen, and the filtering mechanism comprises a carrying container and a filter bag, wherein the carrying container is fixedly arranged in the filtering cavity and a hollow part for passing oil is formed on its peripheral wall; the filter bag is arranged in the carrying container and its lower part is in a gathered shape, and the filter bag is communicated with the oil inlet cavity; the scraping mechanism comprises a scraping plate and a rolling piece, wherein the scraping plate is arranged in the filter bag and its edge part contacts the inner surface of the filter bag, and the rolling piece is distributed in a plurality along the circumference of the scraping plate and is rotatably embedded in the scraping plate; a driving component for controlling the vertical movement of the scraping plate is arranged in the carrying container, and when the scraping plate presses the lower part of the filter bag against the bottom wall of the carrying container, the driving component can also control the rotation of the scraping plate.

[0007] The effect is that after the grease is filtered in the filter bag, the edge part of the scraper plate can scrape off the impurities on the inner surface of the filter bag when it moves downward, so that these impurities flow to the lower part of the filter bag. When the scraper plate moves to the lower part of the filter bag, the lower part of the filter bag can be gradually flattened to make it close to the bottom wall of the carrying container. When the driving component continues to control the rotation of the scraper plate, the scraper plate drives the rolling part to revolve. The rolling part rotates under the action of the extrusion force and friction force of the impurities at the lower part of the filter bag. In the process of rotating and revolving at the same time, the rolling part can extrude large particles of impurities and small particles of impurities in turn. Compared with the existing plate surface flat pressing method, the setting of multiple rolling parts decomposes the entire extrusion surface into multiple rolling points, so that the extrusion of each particle of impurity is independent of each other, ensuring the uniformity and thoroughness of the extrusion of each particle of impurity, and draining the grease in the impurities as much as possible, further reducing the residual grease and reducing the waste of grease.

[0008] Preferably, the driving assembly includes a threaded guide, a transmission seat and a driving seat, the threaded guide is vertically arranged in the filter bag and the top end is fixedly connected to the shell, and the scraper plate is movably sleeved on the outer peripheral side of the threaded guide; the transmission seat is threadedly sleeved on the threaded guide and connected to the scraper plate through an elastic member, so as to drive the scraper plate to move in a vertical spiral manner. When the scraper plate presses the lower part of the filter bag against the bottom wall of the carrying container, the transmission seat drives the scraper plate to rotate during the spiral movement and approaches the scraper plate at the same time; the driving seat is rotatably sleeved on the threaded guide and vertically slidably connected to the transmission seat, so as to make the transmission seat move in a spiral manner when rotating, and a power member for driving the driving seat to rotate is provided in the carrying container.

[0009] The effect is that when the driving seat rotates, with the cooperation of the threaded guide, it can drive the transmission seat to move in a spiral motion, and the transmission seat then drives the scraper plate to move in a vertical spiral motion. The spiral motion of the scraper plate can be decomposed into axial movement and circumferential rotation. The axial movement of the scraper plate allows the scraper plate to scrape off impurities on the inner surface of the filter bag, and the circumferential rotation of the scraper plate allows the scraper plate to rub against the impurities on the inner surface of the filter bag, making the impurities that are not easy to fall off become loose and easy to fall off, thereby improving the cleaning effect of the impurities.

[0010] Preferably, an oil passage is provided inside the threaded guide, the top end of the oil passage extends upward and communicates with the oil inlet chamber, and a peripheral wall of the threaded guide is provided with a plurality of oil outlet holes communicated with the oil passage.

[0011] The effect is that after the grease in the oil inlet cavity flows into the oil channel, it scatters around through the oil outlet holes, thereby achieving the purpose of being evenly dispersed in the filter bag, allowing the filter bag to filter the grease more evenly, which not only speeds up the grease filtering efficiency, but also increases the utilization area of ​​the filter bag.

[0012] Preferably, the top of the carrying container is open and is provided with a slidable ring frame, the ring frame is elastically connected to the shell, and the upper bag opening of the filter bag is connected to the ring frame.

[0013] Preferably, the lower end of the filter bag forms an outlet portion, and the outlet portion passes through the bottom wall of the carrying container and communicates with the external environment.

[0014] Preferably, a non-return mechanism is connected between the rolling member and the scraping plate. When the transmission seat approaches the scraping plate and drives the scraping plate to rotate forward, the rolling member rotates due to the friction with impurities at the bottom of the filter bag. When the transmission seat moves away from the scraping plate and drives the scraping plate to reverse, the rolling member is in a locked state under the action of the non-return mechanism to scrape the impurities into the outlet part.

[0015] Preferably, the non-return mechanism comprises a ratchet wheel arranged on the rolling member and a pawl hinged on the scraping plate, a torsion spring is further connected between the pawl and the scraping plate, and the ratchet wheel and the pawl cooperate with each other.

[0016] The effect is that when squeezing the grease in the impurities, the pawl does not prevent the ratchet and the rolling element from rotating, thus ensuring the rolling effect of the rolling element on the impurities. When the grease in the impurities is squeezed, the power element can drive the transmission seat to move upward in a spiral, and the transmission seat gradually moves away from the scraper plate. Since the elastic element is still in a compressed state at this time, the scraper plate maintains a tight pressure on the lower part of the filter bag, but the scraper plate is driven to reverse by the transmission seat, and the rolling element revolves in the opposite direction. At this time, the rolling element has a tendency to rotate in the opposite direction under the friction with the impurities at the bottom of the filter bag. However, the driven ratchet will be stuck by the pawl when reversing, so that the rolling element cannot rotate in the opposite direction, but is locked on the scraper plate. In this way, when the rolling element revolves in the opposite direction with the scraper plate, it is convenient to scrape the impurities at the bottom of the filter bag into the outlet part for external discharge.

[0017] Preferably, the bottom end of the threaded guide is adjacent to the outlet of the filter bag and is elastically slidably connected to a scraper bar, and the scraper bar is used to scrape off impurities on the scraper plate and the rolling element when the scraper plate is reversed. The effect is that when scraping off impurities, the elastic sliding of the scraper bar can avoid the rolling element.

[0018] Preferably, a rotatable sewage pipe located below the carrying container is provided in the shell, the outlet portion of the filter bag is connected to the sewage pipe through the side wall of the sewage pipe, and the pipe mouth of the sewage pipe extends to the outside of the shell and is connected to the external environment.

[0019] Preferably, the sewage pipe is provided with a valve for controlling its opening and closing.

[0020] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0021] The present invention can scrape off the impurities on the inner surface of the filter bag through the vertical movement of the scraper plate, so that the impurities flow to the lower part of the filter bag; the scraper plate can press the lower part of the filter bag downward to flatten it and make it close to the bottom wall of the carrying container; the scraper plate can rotate under the friction of the impurities in the lower part of the filter bag, and the rolling part also revolves with the scraper plate. In the process of rotating and revolving, the rolling part can squeeze large and small particles of impurities in sequence. Compared with the existing plate surface flat pressing form, the setting of multiple rolling parts decomposes the entire extrusion surface into multiple rolling points, so that the extrusion of each particle of impurity is independent of each other, ensuring the uniformity and thoroughness of the extrusion of each particle of impurity, and draining the grease in the impurities as much as possible, further reducing the residual grease and reducing the waste of grease. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the appearance of the bio-oil hydrogenation reactor filtering device of the present invention.

[0023] Figure 2 It is a cross-sectional schematic diagram of the bio-oil hydrogenation reactor filtering device of the present invention.

[0024] Figure 3 The present invention Figure 2 A magnified schematic diagram of center A.

[0025] Figure 4 The present invention Figure 2 A magnified schematic diagram of point B in the middle.

[0026] Figure 5 It is a three-dimensional schematic diagram of the portion from the drive seat to the dirt scraping plate of the present invention.

[0027] Figure 6 It is an exploded schematic diagram of the portion from the scraping plate to the rolling element of the present invention.

[0028] Figure 7 It is a three-dimensional schematic diagram of the pawl part of the present invention.

[0029] Figure 8 It is a three-dimensional cross-sectional view of the portion from the carrying container to the filter bag of the present invention.

[0030] Fig. 9 It is a schematic structural diagram of the scraper strip portion of the present invention.

[0031] Reference numerals:

[0032] 1. Shell; 11. Partition plate; 111. Mounting frame; 12. Oil inlet chamber; 121. Oil inlet; 122. Air inlet; 13. Filter chamber; 131. Oil outlet;

[0033] 21. Carrying container; 211. Hollow part; 212. Ring frame; 213. Tension spring; 22. Filter bag; 221. Exit part;

[0034] 31. Scraping plate; 311. Ratchet; 312. Torsion spring; 32. Rolling element; 321. Ratchet;

[0035] 4. driving assembly; 41. threaded guide; 411. oil passage; 412. oil outlet; 42. transmission seat; 421. force spring; 43. driving seat; 431. guide rod; 44. power member;

[0036] 5. Drain pipe; 51. Bell mouth structure;

[0037] 61. Sliding rod; 62. Scraper strip; 63. Return spring. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0039] Combine the following Figures 1 to 9 The bio-oil hydrogenation reactor filtration device of the present invention is described.

[0040] like Figure 1 , Figure 2 , Figure 3 and Figure 8 As shown, the bio-oil hydrogenation reactor filtering device of the present invention comprises a housing 1, a filtering mechanism and a scraping mechanism.

[0041] The shell 1 is a vertically extending cylindrical shell structure, and has a partition 11 inside. The partition 11 divides the space inside the shell 1 into an oil inlet chamber 12 at the top and a filter chamber 13 at the bottom. An oil inlet 121 for adding oil is provided on the top wall of the oil inlet chamber 12, and an air inlet 122 for adding hydrogen is provided on the peripheral wall of the oil inlet chamber 12. After the biological oil is introduced into the oil inlet chamber 12, the hydrogenation reaction can change the molecular structure and chemical properties of the biological oil, thereby improving the stability and nutritional value of the biological oil.

[0042] The filter mechanism includes a carrier container 21 and a filter bag 22. The carrier container 21 is disposed in the filter chamber 13 and its top end is open. The top end of the carrier container 21 is fixedly connected to the partition 11. A hollow portion 211 for passing grease is formed on the peripheral wall of the carrier container 21. In this embodiment, the hollow portion 211 is composed of a plurality of evenly distributed through holes, wherein the through holes adjacent to the bottom wall of the carrier container 21 are square holes, and the remaining through holes are round holes. In other embodiments, the above-mentioned hollow portion 211 may also be a grille structure, a fence structure, etc. In addition, the shape of the carrier container 21 in this embodiment may be cylindrical, box-shaped, etc., which is not limited here. The top of the carrying container 21 is provided with a ring frame 212 that can slide up and down. The ring frame 212 is connected to the housing 1 through a tension spring 213. The filter bag 22 is arranged in the carrying container 21. The bag opening portion at the upper end is fixedly connected to the ring frame 212. The lower part of the filter bag 22 is in a gathered shape. The filter bag 22 is connected to the oil inlet chamber 12. In this embodiment, the material of the filter bag 22 can be nylon, polypropylene, non-woven fabric, etc. After the grease in the oil inlet chamber 12 flows into the filter bag 22, it can be filtered by the filter bag 22, and the impurities therein are retained on the inner surface of the filter bag 22. The grease passes through the filter bag 22 and enters the carrying container 21, and then flows into the housing 1 through the hollow part 211 of the carrying container 21. The lower end of the housing 1 can be provided with an oil outlet 131 for discharging the grease in the housing 1, so as to facilitate subsequent operations on the grease.

[0043] The scraping mechanism includes a scraping plate 31 and a rolling piece 32. The scraping plate 31 is arranged in the filter bag 22 and the edge portion contacts the inner surface of the filter bag 22. There are multiple rolling pieces 32 and they are evenly distributed along the circumference of the scraping plate 31. Each rolling piece 32 is rotatably embedded in the scraping plate 31. In this embodiment, the shape of the rolling piece 32 can be columnar, shaft-shaped, etc., and a driving component 4 is provided in the supporting container 21.

[0044] After the grease is filtered, the drive assembly 4 is used to control the vertical movement of the scraper plate 31. When the scraper plate 31 moves downward, the edge portion can scrape off the impurities on the inner surface of the filter bag 22, so that these impurities flow to the lower part of the filter bag 22. When the scraper plate 31 moves to the lower part of the filter bag 22, the lower part of the filter bag 22 can be gradually flattened. In this process, the filter bag 22 will move downward as a whole, and the ring frame 212 will move downward synchronously under the pull of the filter bag 22, thereby compensating for the movement of the filter bag 22. The tension spring 213 is used to reset the ring frame 212 and the filter bag 22 when the scraper plate 31 leaves the lower part of the filter bag 22. At the same time, the tension spring 213 can also keep the filter bag 22 in a taut state under normal conditions, which is beneficial for the edge portion of the scraper plate 31 to scrape off the impurities on the inner surface of the filter bag 22. When the lower part of the filter bag 22 is completely flat, it is tightly attached to the bottom wall of the carrying container 21, and the driving component 4 can continue to control the rotation of the scraper plate 31. At this time, the rotation of the scraper plate 31 is set to forward rotation. When the scraper plate 31 rotates forward, it drives the rolling element 32 to revolve in the forward direction. The rolling element 32 rotates under the extrusion force and friction force of the impurities at the bottom of the filter bag 22. The rolling element 32 can extrude large and small particles of impurities in turn during the process of self-rotation and revolving. Compared with the existing plate surface flat pressing form, the setting of multiple rolling elements 32 decomposes the entire extrusion surface into multiple rolling points, so that the extrusion of each particle of impurity is independent of each other, ensuring the uniformity and thoroughness of the extrusion of each particle of impurity, and draining the grease in the impurities as much as possible, further reducing the residual grease and reducing the waste of grease. After that, the grease continues to enter the shell 1 through the filter bag 22 and the carrying container 21 to achieve discharge and storage.

[0045] Continue to refer Figure 2 , Figure 3 and Figure 5The driving assembly 4 includes a threaded guide 41, a transmission seat 42 and a driving seat 43. The threaded guide 41 is vertically arranged in the filter bag 22 and the top end is fixedly connected to the partition 11. The threaded guide 41 in this embodiment can directly adopt a threaded rod, and the scraping plate 31 is movably sleeved on the outer peripheral side of the threaded guide 41. The transmission seat 42 is located above the scraping plate 31 and is threadedly sleeved on the threaded guide 41. The transmission seat 42 is connected to the scraping plate 31 through an elastic member. Specifically, the elastic member can be a force spring 421 sleeved on the outer peripheral side of the threaded guide 41. When the transmission seat 42 moves in a spiral motion, it can drive the scraper plate 31 to move in a vertical spiral motion. The spiral motion of the scraper plate 31 can be decomposed into axial movement and circumferential rotation. The axial movement of the scraper plate 31 allows the scraper plate 31 to scrape off the impurities on the inner surface of the filter bag 22. The circumferential rotation of the scraper plate 31 allows the scraper plate 31 to rub against the impurities on the inner surface of the filter bag 22, making the impurities that are not easy to fall off become loose and easy to fall off, thereby improving the cleaning effect of the impurities. When the scraper plate 31 presses the lower part of the filter bag 22 against the bottom wall of the carrying container 21, the axial movement of the scraper plate 31 stops, and the transmission seat 42 only drives the scraper plate 31 to rotate circumferentially during the spiral motion, that is, the above-mentioned forward rotation, and at the same time, the transmission seat 42 approaches the scraper plate 31, and the force spring 421 is continuously compressed during this process.

[0046] The driving seat 43 is located above the transmission seat 42 and is rotatably sleeved on the threaded guide 41. A vertical guide rod 431 is fixed below the driving seat 43. The guide rod 431 extends downward and slides through the transmission seat 42 and the scraper plate 31 in sequence. The guide rod 431 is used to transmit the rotational force on the driving seat 43 to the transmission seat 42 and the scraper plate 31 to make them move. When the driving seat 43 rotates, it drives the guide rod 431 to rotate around the axis of the threaded guide 41. The guide rod 431 pushes the transmission seat 42. Under the guidance of the threaded guide 41, the transmission seat 42 performs a spiral motion. A power member 44 for driving the driving seat 43 to rotate is provided in the carrying container 21. The power member 44 includes a power motor. A mounting frame 111 located on the inner side of the ring frame 212 is fixed on the partition 11. The power motor is installed in the mounting frame 111 and connected to the driving seat 43 through a gear pair mechanism.

[0047] The threaded guide 41 is provided with an oil passage 411 inside, the top of the oil passage 411 extends upward and communicates with the oil inlet chamber 12, and the peripheral wall of the threaded guide 41 is evenly provided with a plurality of oil outlet holes 412, which communicate with the oil passage 411. The filter bag 22 is connected with the oil inlet chamber 12 through the oil outlet holes 412 and the oil passage 411. After the grease in the oil inlet chamber 12 flows into the oil passage 411, it is scattered around through the oil outlet holes 412, so as to achieve the purpose of being evenly dispersed in the filter bag 22, so that the filter bag 22 can filter the grease more evenly, which not only speeds up the grease filtering efficiency, but also increases the utilization area of ​​the filter bag 22.

[0048] Continue to refer Figure 2 and Figure 8 , the lower end of the filter bag 22 forms a flat outlet portion 221, and the outlet portion 221 passes through the bottom wall of the carrying container 21. A rotatable sewage pipe 5 located below the carrying container 21 is provided in the shell 1. The length direction of the sewage pipe 5 is consistent with the horizontal direction. The side wall of the sewage pipe 5 forms a bell-mouth structure 51 that expands outward. The bell-mouth structure 51 is connected to the pipe space inside the sewage pipe 5. The outlet portion 221 of the filter bag 22 is connected to the bell-mouth structure 51. The pipe mouth of the sewage pipe 5 extends to the outside of the shell 1 and is connected to the external environment. Therefore, the outlet portion 221 of the filter bag 22 achieves the effect of indirect communication with the external environment through the sewage pipe 5. A valve for controlling the opening and closing of the sewage pipe 5 is provided on the sewage pipe 5. In this embodiment, the valve can be a manual stop valve, a shut-off valve, or a solenoid valve, which is not limited here. In other embodiments, the valve can also be replaced by a pipe cover or a plug threadedly installed at the pipe mouth of the sewage pipe 5, and the opening and closing of the sewage pipe 5 can be achieved by disassembling and assembling the pipe cover or the plug.

[0049] During filtering, the drain pipe 5 can be controlled to rotate, and the drain pipe 5 drives the bell-mouth structure 51 to deflect. The bell-mouth structure 51 bends to one side with the outlet portion 221 of the filter bag 22, and the channel of the outlet portion 221 will gradually shrink until it disappears. At this time, the outlet portion 221 of the filter bag 22 is closed under the effect of bending, so as to prevent the grease entering the filter bag 22 from directly flowing out through the outlet portion 221, thereby ensuring the smooth progress of the filtering work. When the grease of the impurities is squeezed out, the drain pipe 5 can be reset, and the outlet portion 221 of the filter bag 22 can be kept unobstructed again, so as to facilitate the discharge of sewage. The rotation of the drain pipe 5 can be combined with the existing locking technology to realize the locking of the drain pipe 5 at the set position; or, the drain pipe 5 can be driven to rotate by a self-locking motor, which not only saves manpower, but also realizes the self-locking function of the drain pipe 5 at the set position.

[0050] In order to facilitate the impurities after squeezing out the grease to enter the outlet portion 221 of the filter bag 22, continue to refer to Figure 2 , Figure 3 , Figure 6 and Figure 7 A non-return mechanism is connected between the rolling member 32 and the dirt scraping plate 31, and the non-return mechanism includes a ratchet 321 and a pawl 311. The ratchet 321 is fixedly arranged at one end of the rolling member 32, and the pawl 311 is hinged on the dirt scraping plate 31. A torsion spring 312 for resetting the pawl 311 is also connected between the pawl 311 and the dirt scraping plate 31, and the pawl 311 cooperates with the ratchet 321. It can be understood that in order to facilitate the installation of the ratchet 321 and the pawl 311, a receiving groove for accommodating the ratchet 321 and the pawl 311 is also provided on the dirt scraping plate 31.

[0051] When squeezing the grease in the impurities, the transmission seat 42 approaches the scraping plate 31 and drives the scraping plate 31 to rotate forward. Under the action of friction and squeezing force, the rolling member 32 will rotate, and the ratchet 321 will rotate accordingly and continuously push the pawl 311 away. The pawl 311 gives way to the ratchet 321 without locking the ratchet 321. After the grease in the impurities is squeezed, the power member 44 can drive the transmission seat 42 to move upward in a spiral, and the transmission seat 42 gradually moves away from the scraping plate 31. The force spring 421 between the two gradually resets, but the force spring 421 is still in a compressed state, so that the scraping plate 31 is pushed downward to keep the scraping plate 31 pressed against the lower part of the filter bag 22; at the same time, the transmission seat 42 can also drive the scraping plate 31 to reverse through the guide rod 431. The rolling element 32 then revolves in the reverse direction. At this time, under the action of the squeezing force and friction between the rolling element 32 and the impurities at the bottom of the filter bag 22, although there is also a tendency to rotate in the reverse direction, the ratchet 321 driven by it will be stuck with the pawl 311 when reversing, and the pawl 311 realizes the non-return of the ratchet 321. Therefore, under the action of the pawl 311 and the ratchet 321, the rolling element 32 cannot rotate in the reverse direction, but is locked on the scraping plate 31. In this way, when the rolling element 32 revolves in the reverse direction with the scraping plate 31, it is convenient for the impurities at the bottom of the filter bag 22 to be scraped into the outlet part 221, and the impurities are discharged outward through the sewage discharge pipe 5.

[0052] In the process of cleaning the impurities under the filter bag 22, the rolling member 32 and the scraping plate 31 will inevitably be contaminated with some impurities. In order to remove these impurities, continue to refer to Figure 2 , Figure 4 and Fig. 9 The bottom end of the threaded guide 41 is adjacent to the outlet portion 221 of the filter bag 22 and is provided with a vertical sliding hole. A hollow sliding rod 61 is slidably fitted in the sliding hole. A scraper bar 62 located below the threaded guide 41 is connected to the sliding rod 61. A return spring 63 is connected between the scraper bar 62 and the threaded guide 41. The return spring 63 is located in the sliding hole and passes through the hollow area of ​​the sliding rod 61. When the scraper plate 31 is reversed, the scraper bar 62 can be pressed and contacted with the disk surface of the scraper plate 31, thereby cleaning the impurities on the disk surface of the scraper plate 31 and the surface of the rolling element 32, scraping these impurities off and causing them to fall into the outlet portion 221 of the filter bag 22. It can be understood that when the scraper bar 62 passes the rolling element 32, it will be hindered by the rolling element 32 and move downward, thereby avoiding the rolling element 32. After passing the rolling element 32, the return spring 63 drives the scraper bar 62 to move to the original position.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0055] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A bio-oil hydrogenation reactor filtering device, comprising a housing, wherein the housing has an oil inlet cavity and a filter cavity separated from each other, and the cavity wall of the oil inlet cavity is provided with an oil inlet for adding oil and an air inlet for adding hydrogen, characterized in that: Also includes: A filter mechanism, the filter mechanism comprising a carrying container and a filter bag, the carrying container is fixedly arranged in the filter cavity and has a hollow portion formed on its peripheral wall for passing grease; the filter bag is arranged in the carrying container and has a gathered shape at its lower portion, and the filter bag is communicated with the oil inlet cavity; A scraping mechanism, the scraping mechanism comprising a scraping disc and a rolling piece, the scraping disc is arranged in the filter bag and the edge portion thereof contacts the inner surface of the filter bag, and a plurality of rolling pieces are distributed along the circumference of the scraping disc and are all rotatably embedded in the scraping disc; a driving assembly for controlling the vertical movement of the scraping disc is arranged in the carrying container, and when the scraping disc presses the lower portion of the filter bag against the bottom wall of the carrying container, the driving assembly can also control the rotation of the scraping disc; The driving assembly comprises a threaded guide, a transmission seat and a driving seat. The threaded guide is vertically arranged in the filter bag and the top end is fixedly connected to the shell. The scraper plate is movably sleeved on the outer peripheral side of the threaded guide. The transmission seat is threadedly sleeved on the threaded guide and connected to the scraper plate through an elastic member so as to drive the scraper plate to move in a vertical spiral. When the scraper plate presses the lower part of the filter bag against the bottom wall of the carrying container, the transmission seat drives the scraper plate to rotate during the spiral movement and approaches the scraper plate at the same time. The driving seat is rotatably sleeved on the threaded guide and vertically slidably connected to the transmission seat so as to make the driving seat move in a spiral when rotating. A power member for driving the driving seat to rotate is provided in the carrying container. An oil passage is provided inside the threaded guide, the top of which extends upward and communicates with the oil inlet chamber, and a plurality of oil outlet holes communicating with the oil passage are arranged on the peripheral wall of the threaded guide; The top of the carrying container is open and is provided with a slidable ring frame, the ring frame is elastically connected to the shell, and the upper bag opening of the filter bag is connected to the ring frame; The lower end of the filter bag forms an outlet portion, and the outlet portion passes through the bottom wall of the carrying container and communicates with the external environment; A non-return mechanism is connected between the rolling element and the scraping plate. When the transmission seat approaches the scraping plate and drives the scraping plate to rotate forward, the rolling element rotates under the friction with the impurities at the bottom of the filter bag. When the transmission seat moves away from the scraping plate and drives the scraping plate to rotate reversely, the rolling element is in a locked state under the action of the non-return mechanism to scrape the impurities into the outlet part. The non-return mechanism comprises a ratchet wheel arranged on the rolling member and a pawl hinged on the dirt scraping plate. A torsion spring is connected between the pawl and the dirt scraping plate, and the ratchet wheel and the pawl cooperate with each other.

2. The bio-oil hydrogenation reactor filtration device according to claim 1, characterized in that: The bottom end of the threaded guide is adjacent to the outlet portion of the filter bag and is elastically slidably connected with a scraper bar, and the scraper bar is used to scrape off impurities on the scraper plate and the rolling member when the scraper plate is reversed.

3. The bio-oil hydrogenation reactor filtration device according to claim 1, characterized in that: A rotatable sewage pipe located below the carrying container is provided in the shell, the outlet portion of the filter bag is connected to the sewage pipe through the side wall of the sewage pipe, and the pipe mouth of the sewage pipe extends to the outside of the shell and is connected to the external environment.

4. The bio-oil hydrogenation reactor filtration device according to claim 3, characterized in that: The sewage pipe is provided with a valve for controlling the opening and closing thereof.

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