A stirring device for preparing bio-light oil

Abstract

The present invention relates to the technical field of mixers, and specifically discloses a stirring device for preparing bio-light oil, wherein the stirring shaft of the stirrer has an inner cavity and a feed port arranged at the bottom and connected to the inner cavity, an extraction mechanism is arranged in the inner cavity, a distributor is sleeved on the outer peripheral side of the stirring shaft and connected to a frame, the distributor is provided with a distribution cavity extending downwardly, a feeding port is arranged at the top of the stirring shaft, and a feeding hole is distributed on the bottom wall of the distribution cavity, a plugging piece with a feeding hole is elastically slidably connected to the distributor, and a position adjustment mechanism is arranged between the plugging piece and the stirring shaft for controlling the staggering and conduction of the feeding hole and the feeding hole. The stirring device for preparing bio-light oil of the present invention adopts a spreading and dropping method, which reduces interference with the stirring blade, ensures its stability, and avoids the accumulation and blockage of catalyst particles, thereby reducing the difficulty and cost of equipment maintenance.

Description

Technical Field

[0001] The invention relates to the technical field of mixers, and in particular to a stirring device for preparing bio-light oil. Background Art

[0002] Bio-light oil is the low-boiling-point part separated from biodiesel during the vacuum distillation process. It has a yellow or yellow-red appearance. The production raw materials mainly include liquid raw materials such as waste cooking oil, acidified oil, slop oil, palm oil, rapeseed oil, soybean oil, and solid raw materials represented by straw, bark, animal feces, etc. It has a high environmental protection and carbon reduction value. In its production process, stirring equipment is required to stir to ensure that various raw materials, catalysts or additives are evenly distributed in the reaction system, so that the reaction can be fully carried out and the quality and yield of the product can be improved.

[0003] The Chinese patent document with the authorization announcement number CN202087279U discloses a biodiesel blending tank, including an agitator arranged at the top of the tank body and a high-pressure mixer arranged at the bottom of the tank body. The agitator is driven by a three-phase explosion-proof motor and is distributed with three layers of stirring blades. The high-pressure mixer is composed of an air compressor and a distributor, and there are three long tubes with holes on the top of the distributor. After the biodiesel raw materials and additives are added to the tank body, the three-phase explosion-proof motor drives the agitator to stir, and the materials inside the tank body are mixed under the drive of the three layers of stirring blades. The air compressor generates high-pressure gas and sprays it upward through three long tubes with holes, so that the additives deposited at the bottom of the tank body are fully mixed with the upper raw materials to ensure the uniformity of the blended product.

[0004] However, during operation, the high-pressure mixer needs to maintain a certain pressure and flow rate. When the sediment at the bottom layer rushes into the upper layer, it may change the dynamic characteristics of the fluid in the tank and increase the instability of the stirring blades. The accumulation of sediment at the bottom of the tank may clog the long perforated tube or distributor, etc., increasing the difficulty and cost of equipment maintenance. Summary of the invention

[0005] The present invention provides a stirring device for preparing bio-light oil, aiming to solve the problems of reduced stability of stirring blades and increased difficulty and cost of equipment maintenance in the related art.

[0006] The stirring device for preparing bio-light oil of the present invention comprises a frame, a mixing tank, a stirrer, an extraction mechanism and a distributor, wherein the mixing tank is installed on the frame, the stirrer is arranged on the frame and is used to stir the material in the mixing tank, the stirring shaft of the stirrer has an inner cavity and a feed port arranged at the bottom and connected to the inner cavity, the extraction mechanism is arranged in the inner cavity and is used to extract the sediment entering the inner cavity to the top of the stirring shaft; the distributor is sleeved on the outer peripheral side of the stirring shaft and connected to the frame, and the distributor is provided with a radial arrangement along the mixing tank and downward from the inside to the outside. An inclined extending material distribution chamber, a feeding port is provided on the top of the stirring shaft, which is used for intermittent communication with the material distribution chamber when the stirring shaft rotates; the bottom wall of the material distribution chamber is provided with feeding holes distributed along its inclined direction, and a sealing member with a feeding hole is elastically slidably connected to the distributor, and a position adjustment mechanism is provided between the sealing member and the stirring shaft, and when the feeding port is connected with the material distribution chamber, the position adjustment mechanism is used to misalign the feeding hole and the feeding hole, and after the feeding port is separated from the material distribution chamber, the position adjustment mechanism is used to align the feeding hole and the feeding hole.

[0007] The effect is that: by setting the position adjustment mechanism, the catalyst particles are spread out in the material distribution cavity and then fall, thereby ensuring the uniform mixing of the catalyst particles and the bio-light oil raw material. The catalyst particles fall into the bio-light oil raw material again by natural falling, avoiding the induction of a large impact force, basically not changing the dynamic characteristics of the fluid in the tank body, reducing the obstruction and interference to the stirring blade, ensuring the stability of the stirring blade during stirring, and extending the service life of the stirring blade. In addition, the catalyst particles fall spontaneously, avoiding the accumulation in the material distribution cavity, the material discharge hole, and the material through hole, thereby reducing blockage and reducing the difficulty and cost of equipment maintenance.

[0008] Preferably, the position adjustment mechanism includes a protrusion arranged on the outer wall of the stirring shaft and circumferentially staggered with the feeding port, and an arc head formed on the free end of the sealing member; when the feeding port is connected to the material distribution cavity, the arc head is against the outer wall of the stirring shaft; after the feeding port is separated from the material distribution cavity, the arc head can transition to the protrusion.

[0009] Preferably, the extraction mechanism includes a spiral conveying mechanism, which includes a central shaft, spiral blades and a power device. The central shaft is rotatably assembled in the inner cavity, the spiral blades are fixed on the peripheral wall of the central shaft, and the power device is mounted on the frame and is used to drive the central shaft to rotate.

[0010] The effect is that when the power device drives the central shaft to rotate, the spiral blades will draw the catalyst particles entering the inner cavity upward, making it easier to transport the catalyst particles to the feed port. When the spiral blades rotate, negative pressure will be generated, making it easier to draw the catalyst particles deposited on the outside of the stirring shaft into the inner cavity.

[0011] Preferably, the spiral conveying mechanism further comprises a spiral frame arranged around the central axis, the spiral blade is located on the inner side of the spiral frame and forms a cavity with the bottom surface of the spiral frame, and the spiral blade is provided with a plurality of liquid holes communicating with the cavity.

[0012] The effect is that when the spiral blades drive the catalyst particles to move upward, some bio-light oil on the catalyst particles will fall into the clamping cavity through the liquid holes, thereby achieving separation from the catalyst particles and improving the effect of catalyst particle reuse.

[0013] Preferably, the bottom of the spiral frame is movably placed on the bottom wall of the inner cavity, and an elastic member is provided between the spiral blade and the spiral frame, and the spiral frame is driven to rotate by the elastic member; the bottom of the spiral frame is provided with a protruding portion relative to the spiral blade, and the bottom wall of the inner cavity is elastically and slidably connected to a stopper for preventing the sliding of the protruding portion, and a wedge-shaped structure is provided between the bottom of the spiral blade and the stopper, so that when the spiral blade rotates to the stopper position, the stopper can be pressed down to make the stopper avoid the spiral frame.

[0014] Preferably, the wedge-shaped structure comprises a wedge-shaped block fixedly arranged on the side of the stopper, and when the spiral blade rotates to the stopper position, the wedge-shaped block is pressed down by the wedge-shaped surface of the wedge-shaped block.

[0015] The effect is that when the spiral blades rotate relative to the spiral frame, the space of the cavity can be enlarged, thereby forming a negative pressure in the cavity. Under the action of the negative pressure, the bio-light oil on the catalyst particles will be sucked into the cavity, so that the bio-light oil can be stripped from the catalyst particles better and more thoroughly, making the catalyst particles more effective when they are put into use again.

[0016] Preferably, the spiral frame is divided into multiple spiral segments according to its own pitch, and each spiral segment is provided with a material-moving member, and the material-moving member is used to disperse the solid material on the spiral blade when the spiral blade and the spiral frame slide relative to each other.

[0017] The effect is that the catalyst particles on the spiral blades can be dispersed by the material-dispensing member, so that the catalyst particles can be evenly sucked, and the amount of bio-light oil sucked by the clamping cavity on the catalyst particles is increased.

[0018] Preferably, the stirring blades of the stirrer are curved so as to scrape the solid materials on the outside toward the feed inlet.

[0019] Preferably, the frame is connected to a mounting seat located above the mixing tank via a telescopic member, and the agitator and the distributor are both mounted on the mounting seat.

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

[0021] The present invention arranges the position adjustment mechanism so that the catalyst particles are first spread in the material distribution cavity and then dropped, thereby ensuring the uniform arrangement of the catalyst particles in the radial direction of the mixing tank and ensuring the uniform mixing of the catalyst particles and the bio-light oil raw material. The catalyst particles fall into the bio-light oil raw material again by natural falling, avoiding the induction of a large impact force, basically not changing the dynamic characteristics of the fluid in the tank body, reducing the interference with the stirring blade, ensuring the stability of the stirring blade during stirring, and extending the service life of the stirring blade. The catalyst particles fall spontaneously, avoiding accumulation in the material distribution cavity, the material discharge hole, and the material through hole, thereby reducing blockage and reducing the difficulty and cost of equipment maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The figure is a schematic diagram of the appearance of the stirring device for preparing bio-light oil of the present invention.

[0023] Figure 2 It is a cross-sectional schematic diagram of the mounting seat to the extraction mechanism portion of the present invention.

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

[0025] Figure 4 It is a structural schematic diagram of the position adjustment mechanism part of the present invention.

[0026] Figure 5 It is a three-dimensional schematic diagram of the spiral blade to spiral frame portion of the present invention.

[0027] Figure 6 It is a schematic structural diagram of the extension portion to the wedge-shaped structure portion of the present invention.

[0028] Figure 7 It is a schematic diagram of the structure when the clamping cavity space of the present invention is enlarged.

[0029] Reference numerals:

[0030] 1. Frame; 11. Telescopic member; 12. Mounting seat;

[0031] 2. Mixing tank;

[0032] 3. Distributor; 31. Connecting rod; 32. Distributor cavity; 321. Feeding hole; 33. Blocking piece; 331. Feeding hole;

[0033] 41, stirring shaft; 411, inner cavity; 412, feed inlet; 413, feed outlet; 42, stirring blade; 43, driving motor;

[0034] 51. Central axis; 52. Spiral blade; 521. Liquid hole; 522. Limiting surface; 53. Power device; 54. Spiral frame; 541. Spiral lining; 542. Skirt; 543. Spring block; 544. Extension; 545. Limiting edge; 546. Material-dispensing member; 55. Clamping cavity; 56. Stopper; 561. Wedge block;

[0035] 6. Position adjustment mechanism; 61. Protrusion; 62. Arc-shaped head. DETAILED DESCRIPTION

[0036] 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.

[0037] Combine the following Figures 1 to 7 The stirring device for preparing bio-light oil of the present invention is described.

[0038] like Figure 1 to Figure 2 As shown, the stirring device for preparing bio-light oil of the present invention comprises a frame 1, a blending tank 2, a stirrer, an extraction mechanism and a distributor 3.

[0039] The blending tank 2 is installed on the frame 1 and is used to contain the bio-light oil raw material and catalyst to be reacted.

[0040] The frame 1 is connected to a mounting seat 12 located above the mixing tank 2 through a telescopic member 11. The telescopic member 11 in this embodiment can be an electric push rod, a hydraulic rod, a cylinder, etc., which is used to drive the mounting seat 12 to slide up and down. The agitator is installed on the mounting seat 12, which includes a stirring shaft 41, a stirring blade 42 and a driving motor 43. The stirring shaft 41 is rotatably arranged on the mounting seat 12. The stirring blade 42 can be arranged in multiple layers in the up and down direction, and each layer is provided with multiple blades. Each stirring blade 42 is fixedly connected to the stirring shaft 41. A control box is provided on the mounting seat 12. The driving motor 43 is installed in the control box and connected to the stirring shaft 41 through a gear pair mechanism to drive the stirring shaft 41 to rotate.

[0041] When the telescopic member 11 controls the mounting seat 12 to move downward, the mounting seat 12 can insert the stirring shaft 41 into the mixing tank 2, and the driving motor 43 drives the stirring shaft 41 to rotate, and the multi-layer stirring blades 42 stir the bio-light oil raw material and the catalyst in the mixing tank 2 to promote the mixing of the two and accelerate the esterification reaction. When the catalyst used is a solid particle, such as a solid acid or solid base catalyst, the catalyst will be deposited at the bottom of the mixing tank 2 to form a precipitate.

[0042] Continue to refer Figure 1 and Figure 2 The stirring shaft 41 has an inner cavity 411 and a feed port 412 arranged at the bottom and connected to the inner cavity 411. After the stirring shaft 41 is inserted into the preparation tank 2, the feed port 412 is located at the bottom of the preparation tank 2, which is used to allow the deposited catalyst particles to pass through and then introduce them into the inner cavity 411. It is worth noting that the stirring blades 42 are curved arc structures. While stirring, the stirring blades 42 at the bottom layer facilitate scraping the catalyst particles on the outside toward the feed port 412 so that the catalyst particles enter the inner cavity 411.

[0043] Continue to refer Figures 1 to 3 , the extraction mechanism is arranged in the inner cavity 411, and is used to extract the catalyst particles entering the inner cavity 411 to the top of the stirring shaft 41. In this embodiment, the extraction mechanism can be a spiral conveying mechanism, a belt lifting mechanism, a chain plate lifting mechanism, or a plurality of support plates are arranged on the belt surface of the belt mechanism, and the catalyst particles are lifted up by the rise of the support plates. Taking the spiral conveying mechanism as an example, the spiral conveying mechanism includes a central shaft 51, a spiral blade 52 and a power device 53. The central shaft 51 is coaxial with the stirring shaft 41 and is rotatably assembled in the inner cavity 411. The spiral blade 52 is fixed on the peripheral wall of the central shaft 51. The top of the central shaft 51 passes through the stirring shaft 41 and the mounting seat 12 in sequence, and extends into the control box. The power device 53 is installed in the control box and is used to drive the central shaft 51 to rotate. The power device 53 in this embodiment can directly use a power motor.

[0044] When the power device 53 drives the central shaft 51 to rotate, the spiral blades 52 draw upward the catalyst particles entering the inner cavity 411, so that the catalyst particles move to the top of the stirring shaft 41. When the spiral blades 52 rotate, negative pressure is also generated, which facilitates the extraction of the catalyst particles deposited on the outside of the stirring shaft 41 into the inner cavity 411.

[0045] Continue to refer Figures 1 to 4The distributor 3 has an inner hole in the middle, and the distributor 3 is sleeved on the outer peripheral side of the stirring shaft 41 through the inner hole. The distributor 3 is fixedly connected to the mounting seat 12 through the connecting rod 31. It should be noted that the stirring shaft 41 can also be rotatably connected with the distributor 3 to indirectly achieve the purpose of being rotatably set on the mounting seat 12. The distributor 3 is provided with a distribution cavity 32 which is arranged along the radial direction of the preparation tank 2 and extends downward from the inside to the outside. The top of the stirring shaft 41 is provided with a feeding port 413. The feeding port 413 is used to intermittently conduct with the distribution cavity 32 when the stirring shaft 41 rotates, so that the catalyst particles on the top of the stirring shaft 41 can be introduced into the distribution cavity 32. The bottom wall of the material distribution chamber 32 is provided with a plurality of discharge holes 321 evenly distributed along its inclined direction. The distributor 3 is slidably equipped with a blocking piece 33 located below the material distribution chamber 32. The sliding direction of the blocking piece 33 can be consistent with the inclined direction of the material distribution chamber 32. The blocking piece 33 is connected to the distributor 3 by a spring. The blocking piece 33 has a through hole 331 corresponding to the discharge hole 321 one by one. A position adjustment mechanism 6 is provided between the blocking piece 33 and the stirring shaft 41. When the feed port 413 is connected to the material distribution chamber 32, the position adjustment mechanism 6 is used to misalign the through hole 331 and the discharge hole 321, so that the blocking piece 33 forms a blocking effect on the discharge hole 321, thereby preventing the catalyst particles flowing into the material distribution chamber 32 from falling directly through the discharge hole 321 near the inner side and being unable to disperse, so that the catalyst particles can flow slowly along the inclined direction of the material distribution chamber 32 until the bottom wall of the material distribution chamber 32 is covered. After the feed port 413 is separated from the material distribution chamber 32, the position adjustment mechanism 6 is used to align the feed hole 331 with the corresponding feed hole 321, so that the catalyst particles that have been spread out can fall together through multiple feed holes 321 and the feed hole 331, so that the catalyst particles that fall back into the preparation tank 2 are arranged more evenly in the radial direction, ensuring uniform mixing with the bio-light oil raw material. The catalyst particles fall into the bio-light oil raw material again by natural falling, avoiding the induction of a large impact force, basically not changing the dynamic characteristics of the fluid in the tank body, reducing the obstruction and interference to the stirring blade 42, ensuring the stability of the stirring blade 42 during stirring, and extending the service life of the stirring blade 42. In addition, the catalyst particles fall spontaneously, avoiding accumulation in the material distribution chamber 32, the feed hole 321, and the feed hole 331, thereby reducing blockage and reducing the difficulty and cost of equipment maintenance.

[0046] In this embodiment, the number of the feed opening 413 , the material distribution cavity 32 , and the blocking member 33 can be multiple and arranged along the circumference of the stirring shaft 41 , so as to shorten the time for the feed opening 413 and the material distribution cavity 32 to be connected.

[0047] Continue to refer Figure 3 and Figure 4The position adjustment mechanism 6 includes a protrusion 61 provided on the outer wall of the stirring shaft 41 and staggered in the circumferential direction with the feeding port 413, and an arc head 62 formed on the free end of the blocking member 33. When the feeding port 413 is connected to the material distribution cavity 32, the arc head 62 presses against the outer wall of the stirring shaft 41, and the through hole 331 on the blocking member 33 is staggered with the material discharge hole 321, so as to achieve blocking of the feeding; after the feeding port 413 is separated from the material distribution cavity 32, the protrusion 61 can rotate with the stirring shaft 41 to the position of the arc head 62. Due to its arc-shaped structural characteristics, the arc head 62 can cut into the protrusion 61, thereby driving the blocking member 33 to retract. At this time, the through hole 331 on the blocking member 33 is aligned with the material discharge hole 321, so as to achieve opening of the material discharge.

[0048] In other embodiments, the arc head 62 can be replaced by a pointed head, a spherical head, etc., or the portion of the protrusion 61 facing the outside of the stirring shaft 41 can be set as an arc surface or a curved surface, and the arc head 62 can be cancelled, so that the sealing member 33 can also be cut into the protrusion 61 along the arc surface or the curved surface.

[0049] When the catalyst participates in the esterification reaction, bio-light oil or other precipitates will adhere to the surface of the catalyst particles, which will reduce the effect of the catalyst particles when they are re-added.

[0050] To this end, continue to refer to Figure 2 and Figure 3 The spiral conveying mechanism also includes a spiral frame 54 arranged around the central axis 51, and the spiral blade 52 is located on the inner side of the spiral frame 54 and forms a sandwich cavity 55 with the bottom surface of the spiral frame 54. The spiral blade 52 is evenly distributed with a plurality of liquid holes 521 connected to the sandwich cavity 55. When the spiral blade 52 drives the catalyst particles to move upward, some bio-light oil on the catalyst particles will fall into the sandwich cavity 55 through the liquid holes 521, thereby achieving separation from the catalyst particles and improving the effect of catalyst particles when reused. In this embodiment, the spiral frame 54 is composed of a spiral lining 541 and a skirt 542 arranged on the outer edge of the spiral lining 541. The spiral lining 541 is used to form a sandwich cavity 55 with the spiral blade 52, and is used to carry the bio-light oil entering the sandwich cavity 55. The skirt 542 is used to prevent the bio-light oil in the sandwich cavity 55 from overflowing outward and causing pollution.

[0051] In order to make the bio-light oil separate from the catalyst particles more thoroughly, continue to refer to Figures 2 to 7The bottom of the spiral frame 54 is movably placed on the bottom wall of the inner cavity 411, the top of the spiral blade 52 extends upward relative to the spiral frame 54, and the portion of the spiral blade 52 adjacent to the top of the spiral frame 54 forms a limiting surface 522, and a spring block 543 is slidably penetrated through the top of the spiral frame 54, and the spring block 543 is connected to the spiral frame 54 through a compression spring. When the spiral blade 52 rotates, the limiting surface 522 can abut against the spring block 543, and the spiral frame 54 is driven to rotate by the spring block 543 and the compression spring. The bottom of the spiral frame 54 is provided with an extension 544 relative to the spiral blade 52, and the bottom wall of the inner cavity 411 is provided with a vertical slide groove, and a stopper 56 is slidably matched in the slide groove. The stopper 56 is connected to the stirring shaft 41 through a spring sheet. Under the action of the spring sheet, the upper part of the stopper 56 extends into the inner cavity 411 and hinders the sliding of the extension 544. A wedge structure is provided between the bottom of the spiral blade 52 and the stopper 56. The wedge structure includes a wedge block 561 fixedly arranged on the side of the stopper 56. When the extension 544 After being blocked by the stopper 56, the rotation of the spiral frame 54 stops, and the spiral blade 52 will continue to rotate. At this time, the spiral blade 52 rotates relative to the spiral frame 54. When the spiral blade 52 rotates to the position of the stopper 56, the spiral blade 52 presses the wedge block 561 through the wedge surface of the wedge block 561, and the wedge block 561 drives the stopper 56 to move downward. The stopper 56 gradually enters the slide groove and avoids the extension 544. At this time, the spiral blade 52 can continue to push the spiral frame 54 to rotate through the spring block 543 and the compression spring. The setting of the compression spring is used to make way for the spiral blade 52 when it rotates relative to the spiral frame 54, providing a movable space for the spiral blade 52, and the compression spring is also used to reset the spiral frame 54.

[0052] When the spiral blade 52 rotates relative to the spiral frame 54, the space of the clamping cavity 55 can be enlarged, thereby forming a negative pressure in the clamping cavity 55. Under the action of the negative pressure, the bio-light oil on the catalyst particles will be sucked into the clamping cavity 55, so that the bio-light oil can be stripped from the catalyst particles better and more thoroughly, so that the catalyst particles will have a better effect when they are put into use again.

[0053] In other embodiments, the wedge block 561 may be replaced by a straight block, and an inclined surface may be provided at the bottom of the spiral blade 52 . The downward movement of the straight block is achieved through the cooperation of the inclined surface and the straight block, so that the stopper 56 avoids the protruding portion 544 and the spiral frame 54 .

[0054] It should be noted that a spiral limit stop edge 545 is fixedly provided on the inner side of the skirt 542 of the spiral frame 54. During the early assembly of parts, the spiral blade 52 can be directly placed on the limit stop edge 545 to determine the installation position, thus avoiding the alignment and correction process, which is simple and convenient.

[0055] The spiral frame 54 is divided into multiple spiral sections according to its own pitch, that is, the axial dimension of a spiral section is equal to the pitch. Each spiral section is provided with a downwardly directed material shifting member 546. When the spiral blade 52 slides relative to the spiral frame 54, the material shifting member 546 gradually approaches the spiral surface of the spiral blade 52, and the catalyst particles on the spiral surface are shifted and spread around, so that the catalyst particles can be evenly sucked, and the amount of bio-light oil sucked by the clamping chamber 55 on the catalyst particles is increased.

[0056] In this embodiment, the material-moving member 546 may be a plurality of material-moving rods arranged side by side, or a plate structure with serrations, which increases the effect of dispersing the catalyst particles.

[0057] 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.

[0058] 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.

[0059] 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 stirring device for preparing bio-light oil, comprising a frame, a mixing tank mounted on the frame, and a stirrer arranged on the frame and used to stir the material in the mixing tank, characterized in that: It also includes an extraction mechanism and a distributor. The stirring shaft of the stirrer has an inner cavity and a feeding port arranged at the bottom end and connected to the inner cavity. The extraction mechanism is arranged in the inner cavity, and is used to extract the sediment entering the inner cavity to the top of the stirring shaft; the distributor is sleeved on the outer peripheral side of the stirring shaft and is connected to the frame. The distributor is provided with a distribution cavity arranged along the radial direction of the mixing tank and extending downward from the inside to the outside. The top of the stirring shaft is provided with a feeding port, which is used for intermittent conduction with the distribution cavity when the stirring shaft rotates; the bottom wall of the distribution cavity is provided with discharge holes distributed along its inclined direction, and a sealing member with a feeding hole is elastically slidably connected to the distributor, and a position adjustment mechanism is arranged between the sealing member and the stirring shaft. When the feeding port is connected to the distribution cavity, the position adjustment mechanism is used to displace the feeding hole and the discharge hole. After the feeding port is separated from the distribution cavity, the position adjustment mechanism is used to align the feeding hole and the discharge hole. The extraction mechanism includes a screw conveying mechanism, which includes a central shaft, a spiral blade and a power device. The central shaft is rotatably assembled in the inner cavity, the spiral blade is fixed on the peripheral wall of the central shaft, and the power device is installed on the frame and is used to drive the central shaft to rotate; The spiral conveying mechanism also includes a spiral frame arranged around the central axis. The spiral blades are located inside the spiral frame and form a clamping cavity with the bottom surface of the spiral frame. The spiral blades are provided with a plurality of liquid holes communicating with the clamping cavity.

2. The stirring device for preparing bio-light oil according to claim 1, characterized in that: The position adjustment mechanism includes a protrusion arranged on the outer wall of the stirring shaft and circumferentially staggered with the feeding port, and an arc head formed on the free end of the sealing member. When the feeding port is connected to the material distribution cavity, the arc head is pressed against the outer wall of the stirring shaft. After the feeding port is separated from the material distribution cavity, the arc head can transition to the protrusion.

3. The stirring device for preparing bio-light oil according to claim 1, characterized in that: The bottom of the spiral frame is movably placed on the bottom wall of the inner cavity, and an elastic member is arranged between the spiral blade and the spiral frame, and the spiral frame is driven to rotate by the elastic member; the bottom of the spiral frame is provided with a protruding portion relative to the spiral blade, and the bottom wall of the inner cavity is elastically and slidably connected with a stopper for preventing the sliding of the protruding portion, and a wedge-shaped structure is arranged between the bottom of the spiral blade and the stopper, so that when the spiral blade rotates to the stopper position, the stopper can be pressed down to make the stopper avoid the spiral frame.

4. The stirring device for preparing bio-light oil according to claim 3, characterized in that: The wedge-shaped structure comprises a wedge-shaped block fixedly arranged on the side of the stopper. When the spiral blade rotates to the stopper position, the wedge-shaped block is pressed down by the wedge-shaped surface of the wedge-shaped block.

5. The stirring device for preparing bio-light oil according to claim 3, characterized in that: The spiral frame is divided into multiple spiral sections according to its own pitch, and each spiral section is provided with a material-moving member, which is used to disperse the solid material on the spiral blade when the spiral blade and the spiral frame slide relative to each other.

6. The stirring device for preparing bio-light oil according to claim 1, characterized in that: The stirring blades of the stirrer are curved so as to scrape the solid materials on the outside toward the feed inlet.

7. The stirring device for preparing bio-light oil according to claim 1, characterized in that: The frame is connected with a mounting seat located above the mixing tank via a telescopic member, and the agitator and the distributor are both mounted on the mounting seat.

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