A mixing device and mixing process for biodiesel processing

Abstract

The present invention relates to the technical field of biodiesel processing, and specifically discloses a mixing device and a mixing process for biodiesel processing, including a tank body, a driving shaft, a stirring mechanism, a cleaning mechanism and an adjusting mechanism. The stirring mechanism includes a plurality of stirring components, and each stirring component includes a cross sleeve and two stirring rods. The cross sleeves in the plurality of stirring components are sequentially sleeved on the outer side of the driving shaft along the axial direction of the driving shaft. The two stirring rods are symmetrically arranged on the cross sleeve along the radial direction of the tank body. Each stirring rod is hollow and is densely provided with filter holes on the peripheral side. The cleaning mechanism is provided in multiple groups and is respectively arranged corresponding to the plurality of stirring components for cleaning the outer peripheral side of the stirring rod; the present invention is provided with a stirring mechanism. When the stirring mechanism is in state one, it can filter the materials in the tank body, and after the filtering is completed, the stirring mechanism can be driven by the adjusting mechanism to switch to state two to stir the materials in the tank body.

Description

Technical Field

[0001] The present invention relates to the technical field of biodiesel processing, and particularly relates to a mixing device and a mixing process for biodiesel processing. Background Art

[0002] Biodiesel is a renewable energy fuel, and its main components are a liquid fuel obtained by transesterification of raw materials such as oils and fats, vegetable oils, and bioesters. The raw materials of biodiesel mainly include oilseeds of seed plants such as rapeseed, soybean, palm oil, linseed, and sunflower seed, waste cooking oil, animal fats, oil waste, etc. Mixing different raw materials can adjust the physical and chemical properties and performance of the fuel, so as to achieve a better use effect. Most related technologies use mixing devices to mix and stir different raw materials of biodiesel.

[0003] The patent document with the publication number of CN221108117U provides a biodiesel raw material mixer, which includes a mixing barrel. A heating wire is provided on the inner wall of the mixing barrel, a temperature sensor is provided inside the mixing barrel, a display screen is provided outside the mixing barrel, a connecting pipe is provided below the mixing barrel to connect to a filtering barrel, a valve is provided in the connecting pipe, and a filter screen with one end protruding is inclined inside the filtering barrel. By setting the heating wire, the viscosity of the raw materials can be reduced, making the mixing efficiency higher. By setting the temperature sensor and the display screen, the temperature inside the mixing barrel can be monitored. By setting the filter screen, impurities in the raw materials can be filtered.

[0004] However, the mixer provided in the above patent document only filters impurities in the raw materials after mixing is completed. During the mixing process, impurities in the raw materials may affect the progress of the reaction and the quality of the final product. In addition, when using a stirring rod to stir the raw materials, due to the high viscosity of some biodiesel, it will cause resistance to the rotation of the stirring rod and increase the load of the stirring motor. Summary of the Invention

[0005] The present invention provides a mixing device and a mixing process for biodiesel processing, aiming to solve the problems that the mixer in the related technology only filters impurities in the raw materials after mixing is completed, so that during the mixing process, impurities in the raw materials may affect the progress of the reaction and the quality of the final product. In addition, when using a stirring rod to stir the raw materials, due to the high viscosity of some biodiesel, it will cause resistance to the rotation of the stirring rod and increase the load of the stirring motor.

[0006] In a first aspect, a mixing device for biodiesel processing according to the present invention includes a tank body and a driving shaft, and further includes a stirring mechanism, a cleaning mechanism, and an adjusting mechanism provided inside the tank body;

[0007] The stirring mechanism includes a plurality of stirring components. Each stirring component includes a cross sleeve and two stirring rods. The cross sleeves in the plurality of stirring components are sequentially sleeved on the outside of the drive shaft along the axial direction of the drive shaft. The two stirring rods are symmetrically arranged on the cross sleeve along the radial direction of the tank body. Each stirring rod is hollow, and its peripheral side is densely provided with filter holes. The cleaning mechanism is provided in multiple groups and is respectively arranged corresponding to the plurality of stirring components. Each cleaning mechanism is arranged on the corresponding cross sleeve and is used to clean the outer peripheral side of the stirring rod;

[0008] The stirring mechanism has two states: State 1, the plurality of stirring components are arranged in an equidistant array along the axial direction of the drive shaft. At this time, two adjacent cleaning mechanisms are close to each other and are used to close the channel formed between two adjacent stirring rods. State 2, the stirring mechanism is arranged in a double helix shape. At this time, two adjacent cleaning mechanisms are far away from each other, so that the channel between the stirring rods is opened;

[0009] The adjusting mechanism is used to drive the plurality of stirring components to rotate relative to the drive shaft in sequence from top to bottom around the axis of the drive shaft, and the rotation angles of the plurality of stirring components decrease from top to bottom in sequence, so that the stirring mechanism can be switched between State 1 and State 2.

[0010] When the stirring mechanism is in State 1, it can filter the materials in the tank body. After the filtering is completed, the stirring mechanism can be driven by the adjusting mechanism to switch to State 2 to stir the materials in the tank body, and the resistance to the rotation of the stirring rod can be reduced.

[0011] Preferably, the inside of the drive shaft is hollow. The lower end of the drive shaft penetrates through the bottom of the tank body and is connected with a flange. A plurality of air vents I are provided on the side wall of the drive shaft. An air vent II is provided on each cross sleeve. An air vent III is provided at the end of each stirring rod, so that gas can pass through the drive shaft, the cross sleeve and the stirring rod in sequence and finally enter the inside of the tank body.

[0012] When the stirring mechanism is in State 1, the introduced gas can perform backflushing cleaning on the filter holes on the stirring rod to avoid the blockage of the filter holes and affect the filtering effect. When the stirring mechanism is in State 2, the introduced gas can form tiny bubbles in the materials, reduce the viscosity between the liquids, and make the stirring easier.

[0013] Preferably, an annular cavity through which gas can flow is provided on the cross sleeve. The air vent II communicates with the air vent I through the annular cavity.

[0014] When the cross sleeve rotates relative to the drive shaft, the gas inside the drive shaft can always enter the inside of the stirring rod through the annular cavity.

[0015] Preferably, the cleaning mechanism includes two arc-shaped plates and a driving structure. The two arc-shaped plates are symmetrically arranged on the upper and lower sides of the stirring rod, and the inner arc surfaces of the two arc-shaped plates face each other. A scraping plate is provided between each arc-shaped plate and the stirring rod. One end of the scraping plate is hinged to the inner arc surface of the arc-shaped plate through a torsion spring, and the other end is in contact with the outer peripheral side of the stirring rod. The driving structure is used to drive the two arc-shaped plates in the same group of cleaning mechanisms to approach or move away from each other, so that when the stirring mechanism is in state one, the outer arc surfaces of the two arc-shaped plates located between adjacent stirring rods are in contact with each other, and when the stirring mechanism is in state two, the inner arc surfaces of the two arc-shaped plates located on the upper and lower sides of the stirring rod are both in contact with the outer peripheral side of the stirring rod.

[0016] Preferably, rough structures are provided on the upper and lower end faces of each cross sleeve. The cross sleeve located at the lowermost position is fixedly connected to the driving shaft, and the remaining cross sleeves are all movably sleeved on the outside of the driving shaft. The adjusting mechanism includes a driving member, which is arranged on the upper part of the driving shaft, and the output end is connected to the uppermost cross sleeve, and can drive the uppermost cross sleeve to move downward along the axial direction of the driving shaft, so that the upper and lower end faces on adjacent cross sleeves are in contact with each other. At this time, the cross sleeve is in a locked state, enabling multiple cross sleeves to rotate synchronously with the driving shaft.

[0017] Preferably, a chute is provided at the lower end of each cross sleeve, and the chute is arranged along the circumferential direction of the lower end of the cross sleeve. A sliding rod is provided at the upper end of each cross sleeve, and the sliding rod is slidably matched with the cross sleeve longitudinally. The upper end of the sliding rod penetrates through the cross sleeve and extends into the chute provided on the upper cross sleeve, and is slidably matched with the chute. The driving member can drive the uppermost cross sleeve to rotate relative to the driving shaft around the axis of the driving shaft.

[0018] Preferably, the driving structure includes a first connecting rod, a second connecting rod and a contact wheel. The first connecting rod is connected to the upper arc-shaped plate, and the second connecting rod is connected to the lower arc-shaped plate. The first connecting rod and the second connecting rod are both arranged longitudinally and are slidably matched with the cross sleeve. The contact wheel is connected to the end of the stirring rod, and the two sides are in frictional contact with the first connecting rod and the second connecting rod respectively. The lower end of the sliding rod penetrates through the cross sleeve and is connected to the upper arc-shaped plate, and the inside of the chute is in a bevel shape.

[0019] Preferably, a collecting groove is provided on the inner arc surface of the lower arc-shaped plate for collecting the impurities scraped off by the scraping plate.

[0020] During the process of the stirring mechanism switching from state one to state two, under the action of the driving structure, the stirring rod can rotate self - sufficiently, so that the impurities intercepted outside the stirring rod can be scraped off by the scraping plate and dropped into the collecting groove. When the stirring mechanism is in state two, the scraping plate fits with the outer peripheral side of the stirring rod, so that the collecting groove can be closed, avoiding the contact between the materials and the impurities in the collecting groove during the mixing process.

[0021] Preferably, a liquid level alarm and a plurality of observation windows are provided on the tank body.

[0022] It is beneficial to observe the mixing condition in the tank body, and at the same time avoid situations such as overflow and leakage, ensuring operation safety.

[0023] In a second aspect, a mixing process for biodiesel processing according to the present invention uses the above-mentioned mixing equipment for biodiesel processing, and it includes the following steps:

[0024] S1. Feeding: Add a variety of raw materials to be mixed into the tank body in sequence;

[0025] S2. Filtering: In the initial state, the stirring mechanism is in state one. At this time, drive the stirring mechanism to rotate through the drive shaft, and the material can be filtered through the filter holes on the stirring rod, and the impurities in the material are intercepted on the outer peripheral side of the stirring rod;

[0026] S3. Stirring: After the filtering of the material is completed, the stirring mechanism is switched to state two through the adjustment mechanism. At this time, drive the stirring mechanism to rotate through the drive shaft, and the material can be stirred through the staggeredly arranged stirring rods to make the material mix evenly;

[0027] S4. Cleaning: During the process of the stirring mechanism switching from state one to state two, the cleaning mechanism can clean and collect the intercepted impurities;

[0028] S5. Discharging: Discharge the mixed material from the tank body.

[0029] When the stirring mechanism is in state one, it can filter the material in the tank body. During the process of the stirring mechanism switching from state one to state two, the cleaning mechanism can clean and collect the intercepted impurities. When the stirring mechanism is in state two, it can stir the material in the tank body.

[0030] The beneficial effects of the present invention are as follows:

[0031] 1. The present invention is provided with a stirring mechanism, and the stirring mechanism has two states. When in state one, the stirring mechanism can filter the material in the tank body to avoid the influence of impurities in the material on the mixing of the material. When in state two, the stirring mechanism can stir the material in the tank body to make the material mix evenly, and at the same time can reduce the resistance of the rotation of the stirring mechanism, making the stirring easier.

[0032] 2. The present invention is provided with a gas supply channel, enabling gas to sequentially pass through the drive shaft, the cross sleeve, and the stirring rod, and finally enter the interior of the tank body. When the stirring mechanism is in state one, the gas in the gas supply channel can perform backflushing cleaning on the filter holes on the stirring rod, preventing the blockage of the filter holes and affecting the filtering effect on the material. When the stirring mechanism is in state two, the gas can form tiny bubbles in the material, reducing the viscosity between the materials and further reducing the resistance of the stirring rod to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0034] Figure 2 is a schematic diagram of the structure of the present invention cut longitudinally.

[0035] Figure 3 is a schematic diagram of the stirring mechanism of the present invention in state one.

[0036] Figure 4 is a schematic diagram of the stirring mechanism of the present invention in state two.

[0037] Figure 5 is a schematic diagram of the assembly structure of the stirring component and the cleaning mechanism of the present invention.

[0038] Figure 6 is a schematic diagram of the assembly structure of two adjacent cross sleeves of the present invention.

[0039] Figure 7 is a schematic diagram of the cross sleeve of the present invention cut longitudinally.

[0040] Figure 8 is a schematic diagram of the drive structure of the present invention.

[0041] Reference numerals:

[0042] 1. Tank body; 11. Drive shaft; 12. Flange; 13. Drive motor; 14. Feed inlet; 15. Discharge outlet; 16. Liquid level alarm; 17. Observation window; 21. Cross sleeve; 211. Vent hole two; 212. Annular cavity; 213. Slide groove; 214. Installation groove; 22. Stirring rod; 221. Filter hole; 222. Vent hole three; 23. Driving member; 24. Slide bar; 31. Arc plate; 311. Collection groove; 32. Scraper; 33. Link one; 34. Link two; 35. Contact wheel. DETAILED DESCRIPTION OF THE INVENTION

[0043] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0044] As shown Figures 1 to 8 shown, a mixing device for biodiesel processing according to the present invention includes a tank body 1, a drive shaft 11, a stirring mechanism, a cleaning mechanism, and an adjusting mechanism.

[0045] The drive shaft 11 is rotatably arranged inside the tank body 1 along the axis of the tank body 1. A drive motor 13 for rotating the drive shaft 11 is installed at the upper end of the tank body 1. A feed inlet 14 is provided at the top of the tank body 1, and a discharge outlet 15 is provided at the bottom of the tank body 1.

[0046] The stirring mechanism includes a plurality of stirring components. Each stirring component includes a cross sleeve 21 and two stirring rods 22. The cross sleeves 21 in the plurality of stirring components are sequentially sleeved outside the drive shaft 11 along the axial direction of the drive shaft 11. The two stirring rods 22 are symmetrically arranged on the cross sleeve 21 along the radial direction of the tank body 1. The inside of each stirring rod 22 is hollow, and filter holes 221 are densely arranged on the peripheral side. The cleaning mechanism is provided in multiple groups and is respectively arranged corresponding to the plurality of stirring components. Each cleaning mechanism is arranged on the corresponding cross sleeve 21 for cleaning the outer peripheral side of the stirring rod 22.

[0047] The stirring mechanism has two states: In the first state, the plurality of stirring components are arranged in an equidistant array along the axial direction of the drive shaft 11. At this time, the adjacent two cleaning mechanisms are close to each other to close the channel formed between the adjacent two stirring rods 22, so that the material in the tank body 1 cannot pass between the two stirring rods 22. In the second state, the stirring mechanism is arranged in a double helix shape. At this time, the adjacent two cleaning mechanisms are far away from each other, so that the channel formed between the adjacent two stirring rods 22 is opened, and the material in the tank body 1 can pass between the two stirring rods 22.

[0048] The adjusting mechanism is used to drive the plurality of stirring components to rotate relative to the drive shaft 11 in sequence from top to bottom around the axis of the drive shaft 11, and the rotation angles of the plurality of stirring components decrease in sequence from top to bottom, so that the stirring mechanism is switched between the first state and the second state.

[0049] Specifically, as Figures 1 to 5As shown in the figure, in the initial state, the stirring mechanism is in State 1. At this time, the driving shaft 11 drives the stirring mechanism to rotate. The materials in the tank body 1 will pass through the filter holes 221 provided on the stirring rod 22, while the impurities contained in the materials will be intercepted on the outer peripheral side of the stirring rod 22, realizing the filtration of the materials. Subsequently, the cleaning mechanism can be used to clean and collect the intercepted impurities; after the filtration of the materials is completed, the adjusting mechanism drives the stirring mechanism to switch from State 1 to State 2. At this time, the driving shaft 11 drives the stirring mechanism to rotate, and the materials in the tank body 1 can be stirred by a plurality of stirring rods 22 arranged in a staggered manner, making the materials mix evenly. During this process, since the stirring rod 22 is provided with filter holes 221, after the stirring rod 22 contacts the materials, a plurality of filter holes 221 on the surface of the stirring rod 22 can allow a part of the materials to pass through, thereby reducing the resistance of the materials to the stirring rod 22 and reducing the load on the driving motor 13 caused by the resistance.

[0050] In some embodiments, the inside of the driving shaft 11 is hollow. The lower end of the driving shaft 11 penetrates the bottom of the tank body 1 and is connected with a flange 12. A plurality of first ventilation holes are provided on the side wall of the driving shaft 11. Each cross sleeve 21 is provided with a second ventilation hole 211, and each end of the stirring rod 22 is provided with a third ventilation hole 222, so that the introduced gas can sequentially pass through the driving shaft 11, the cross sleeve 21 and the stirring rod 22, and finally enter the inside of the tank body 1.

[0051] Specifically, as Figures 2 to 8 shown in the figure, when an external gas supply device is connected to the flange 12, gas can be conveyed into the driving shaft 11. The gas will sequentially pass through the driving shaft 11, the cross sleeve 21 and the stirring rod 22, and finally enter the inside of the tank body 1. When the stirring mechanism is in State 1, through the rotation of the stirring mechanism, the materials in the tank body 1 can be filtered, and the impurities in the materials are intercepted on the outer peripheral side of the stirring rod 22, which may cause the filter holes 221 on the stirring rod 22 to be blocked. At this time, the gas supply device is started to convey gas into the tank body 1. During the process of the gas entering the inside of the tank body 1 from the inside of the stirring rod 22, the gas can perform backwashing cleaning on the filter holes 221 on the stirring rod 22, blowing out the impurities blocked in the filter holes 221 and preventing the filter holes 221 from being blocked and affecting the filtration effect of the materials; when the stirring mechanism is in State 2, through the rotation of the stirring mechanism, the materials in the tank body 1 can be stirred to make the materials mix evenly. At this time, the gas supply device is started to convey gas into the tank body 1. When the gas enters the inside of the tank body 1 and contacts the materials in the tank body 1, tiny bubbles will be formed in the materials, thereby reducing the viscosity between the liquids, helping to reduce the resistance of the stirring rod 22 to rotate, and making the stirring easier.

[0052] In some embodiments, the cross sleeve 21 is provided with an annular cavity 212 through which gas can flow. The second ventilation hole 211 communicates with the first ventilation hole through the annular cavity 212.

[0053] Specifically, as Figures 3 to 8 shown, by setting the annular cavity 212, when the cross sleeve 21 rotates relative to the drive shaft 11, the gas in the drive shaft 11 can enter the annular cavity 212 through the first vent hole, and then enter the stirring rod 22 through the second vent hole 211 and the third vent hole 222 to achieve the smooth flow of the gas.

[0054] In some embodiments, the cleaning mechanism includes two arc-shaped plates 31 and a driving structure. The two arc-shaped plates 31 are symmetrically arranged on the upper and lower sides of the stirring rod 22, and the inner arc surfaces of the two arc-shaped plates 31 face each other. A scraping plate 32 is arranged between each arc-shaped plate 31 and the stirring rod 22. One end of the scraping plate 32 is hinged to the inner arc surface of the arc-shaped plate 31 through a torsion spring, and the other end is in contact with the outer peripheral side of the stirring rod 22. The driving structure is used to drive the two arc-shaped plates 31 in the same set of cleaning mechanisms to approach or move away from each other, so that when the stirring mechanism is in state one, the outer arc surfaces of the two arc-shaped plates 31 located between two adjacent stirring rods 22 are in contact with each other, and when the stirring mechanism is in state two, the inner arc surfaces of the two arc-shaped plates 31 located on the upper and lower sides of the stirring rod 22 are both in contact with the outer peripheral side of the stirring rod 22.

[0055] Specifically, as Figures 2 to 5 shown, when the stirring mechanism is in state one, the outer arc surfaces of the two arc-shaped plates 31 located between two adjacent stirring rods 22 are in contact with each other, and at the same time, the end of the scraping plate 32 away from the arc-shaped plate 31 is in contact with the outer peripheral side of the stirring rod 22. At this time, the channel formed between two adjacent stirring rods 22 is closed, so that during the rotation of the stirring mechanism with the drive shaft 11, the material in the tank body 1 cannot pass through between the two stirring rods 22 and can only pass through the filter holes 221 provided on the stirring rod 22, so as to realize the filtration of the material during this process; during the process of the stirring mechanism switching from state one to state two, the driving structure drives the two arc-shaped plates 31 in the same set of cleaning mechanisms to approach each other until the inner arc surfaces of the two arc-shaped plates 31 located on the upper and lower sides of the stirring rod 22 are both in contact with the outer peripheral side of the stirring rod 22. At this time, the flow formed between two adjacent stirring rods 22 is opened, so that during the rotation of the stirring mechanism with the drive shaft 11, the material in the tank body 1 can pass through between the two stirring rods 22 and can also pass through the filter holes 221 provided on the stirring rod 22, so as to realize the stirring of the material during this process.

[0056] In some embodiments, rough structures are provided on both the upper and lower end faces of each cross sleeve 21. The lowermost cross sleeve 21 is fixedly connected to the drive shaft 11, and the remaining cross sleeves 21 are respectively movably sleeved on the outside of the drive shaft 11. The adjustment mechanism includes a driving member 23, which is provided on the upper part of the drive shaft 11, and its output end is connected to the uppermost cross sleeve 21, and can drive the uppermost cross sleeve 21 to move downward along the axial direction of the drive shaft 11, so that the upper and lower end faces on adjacent two cross sleeves 21 are in contact. At this time, the cross sleeve 21 is in a locked state, enabling the multiple cross sleeves 21 to rotate synchronously with the drive shaft 11.

[0057] Specifically, as Figures 2 to 6 shown, when the stirring mechanism is in state one or state two, by driving the uppermost cross sleeve 21 to move downward along the axial direction of the drive shaft 11 through the driving member 23, the cross sleeve 21 can be extruded, so that the upper and lower end faces on adjacent two cross sleeves 21 are in contact. At this time, the cross sleeve 21 is in a locked state, enabling the multiple cross sleeves 21 to rotate synchronously with the drive shaft 11 to filter or stir the materials in the tank body 1 through the rotation of the stirring mechanism; when the stirring mechanism is switched between state one and state two, by driving the uppermost cross sleeve 21 to move upward along the axial direction of the drive shaft 11 through the driving member 23, the extrusion of the cross sleeve 21 is released. At this time, the cross sleeve 21 is in an unlocked state, enabling each cross sleeve 21 to rotate independently relative to the other cross sleeves 21, so as to realize the state switching of the stirring mechanism through the different rotation angles between the multiple cross sleeves 21.

[0058] In some embodiments, a chute 213 is provided at the lower end of each cross sleeve 21. The chute 213 is arranged along the circumferential direction of the lower end of the cross sleeve 21. A slide bar 24 is provided at the upper end of each cross sleeve 21. The slide bar 24 is slidably matched with the cross sleeve 21 longitudinally. The upper end of the slide bar 24 penetrates through the cross sleeve 21 and extends into the chute 213 provided on the upper cross sleeve 21, and is slidably matched with the chute 213. The driving member 23 can drive the uppermost cross sleeve 21 to rotate relative to the drive shaft 11 around the axis of the drive shaft 11.

[0059] Specifically, as Figures 3 to 7As shown in the figure, when the stirring mechanism is in State 1, the materials in the tank body 1 can be filtered through the rotation of the stirring mechanism. After the filtration of the materials is completed, the top cross sleeve 21 is driven by the driving member 23 to move upward along the axial direction of the driving shaft 11, relieving the extrusion of the cross sleeve 21 and making the cross sleeve 21 in an unlocked state. At this time, when the top cross sleeve 21 is driven by the driving member 23 to rotate relative to the driving shaft 11 around the axis of the driving shaft 11, the top cross sleeve 21 will rotate relative to the second cross sleeve 21. During this process, the sliding rod 24 on the second cross sleeve 21 will slide in the chute 213 provided on the first cross sleeve 21. When the sliding rod 24 slides to the other end of the chute 213, the sliding rod 24 on the second cross sleeve 21 can be pushed to rotate with the first cross sleeve 21 through the continuous rotation of the first cross sleeve 21, thereby driving the second cross sleeve 21 to rotate and making the second cross sleeve 21 rotate relative to the third cross sleeve 21. During this process, the sliding rod 24 on the third cross sleeve 21 will slide in the chute 213 provided on the second cross sleeve 21. When the sliding rod 24 moves to the other end of the chute 213, the third cross sleeve 21 can be driven to rotate through the continuous rotation of the second cross sleeve 21, and so on until the second last cross sleeve 21 completes the rotation. At this time, the stirring mechanism is in State 2, that is, the multiple stirring components in the stirring mechanism are in a double helix shape, making the multiple stirring rods 22 arranged in a staggered manner. Then, the top cross sleeve 21 is driven by the driving member 23 to move downward along the axial direction of the driving shaft 11, making the cross sleeve 21 locked again. At this time, the materials in the tank body 1 can be stirred through the rotation of the stirring mechanism.

[0060] In some embodiments, the driving structure includes a first connecting rod 33, a second connecting rod 34 and a contact wheel 35. The first connecting rod 33 is connected to the upper arc-shaped plate 31, and the second connecting rod 34 is connected to the lower arc-shaped plate 31. Two mounting grooves 214 are longitudinally provided on the left and right end faces of the cross sleeve 21. The first connecting rod 33 and the second connecting rod 34 are both longitudinally arranged and are respectively in sliding fit with the cross sleeve 21 through the corresponding mounting grooves 214. The contact wheel 35 is connected to the end of the stirring rod 22 and is in frictional contact with the first connecting rod 33 and the second connecting rod 34 on both sides respectively. The lower end of the sliding rod 24 penetrates through the cross sleeve 21 and is connected to the upper arc-shaped plate 31, and the inside of the chute 213 is in a slope shape.

[0061] Specifically, as Figures 3 to 8As shown, when a cross sleeve 21 rotates relative to the adjacent lower cross sleeve 21, the slide bar 24 on the lower cross sleeve 21 slides within the chute 213 provided on the upper cross sleeve 21. Since the inside of the chute 213 is inclined, the slide bar 24 moves up and down under the action of the inclined plane. When the slide bar 24 moves downward, it drives the upper arc-shaped plate 31 to move, thereby driving the first connecting rod 33 to move downward. At this time, through the frictional transmission between the first connecting rod 33 and the contact wheel 35, the contact wheel 35 rotates, and through the frictional transmission between the contact wheel 35 and the second connecting rod 34, the second connecting rod 34 is driven to move upward, thereby driving the lower arc-shaped plate 31 to move upward, causing the two arc-shaped plates 31 in the same set of cleaning mechanisms to approach each other. Similarly, when the slide bar 24 moves upward, under the cooperation of the first connecting rod 33, the second connecting rod 34 and the contact wheel 35, the two arc-shaped plates 31 in the same set of cleaning mechanisms move away from each other.

[0062] In some embodiments, a collection groove 311 is provided on the inner arc surface of the lower arc-shaped plate 31 for collecting impurities scraped off by the scraper 32.

[0063] Specifically, as Figure 1 , Figure 5 and Figure 8 shown, during the process of the stirring mechanism switching from state one to state two, the two arc-shaped plates 31 in the same set of cleaning mechanisms approach each other under the action of the driving structure. Among them, through the rotation of the contact wheel 35, the stirring rod 22 connected thereto is driven to rotate. Since one side of the scraper 32 is in contact with the outer peripheral side of the stirring rod 22, during the rotation of the stirring rod 22, the impurities intercepted on the outer peripheral side of the stirring rod 22 can be scraped off by the scraper 32 and collected in the collection groove 311; when the stirring mechanism is in state two, the inner arc surface of the arc-shaped plate 31 is in contact with the outer peripheral side of the stirring rod 22. At this time, the scraper 32 fits the inner arc surface of the arc-shaped plate 31 and can seal the collection groove 311 to prevent the material from coming into contact with the impurities in the collection groove 311 again during the stirring process. After the material is mixed, the material is discharged from the discharge port 15, and then the stirring mechanism is switched to state one through the adjustment mechanism, and the two arc-shaped plates 31 in the same set of cleaning mechanisms move away from each other under the action of the driving structure. During this process, the scraper 32 rotates under the action of the torsion spring, exposing the collection groove 311, so that when the inside of the tank body 1 is cleaned by water washing, the collection groove 311 can be cleaned together, and the impurities in the collection groove 311 are discharged from the discharge port 15 along with the water flow.

[0064] As Figure 1As shown in the figure, a liquid level alarm 16 and a plurality of observation windows 17 are provided on the tank body 1. By providing the observation windows 17, the mixing condition of the materials in the tank body 1 can be directly observed, so as to adjust the stirring speed in time, improve the production efficiency and product quality. In addition, problems that may occur in the tank body 1 can be detected in time, and preventive measures can be taken in time to ensure the operation safety. For the equipment for automatically adding materials, by providing the liquid level alarm 16, a warning can be issued in time when the liquid level reaches a dangerous level, reminding the operator to take measures, so as to avoid safety accidents such as overflow and leakage.

[0065] As Figures 1 to 8 shown, the present invention also provides a mixing process using the above-mentioned mixing equipment for biodiesel processing, which specifically includes the following steps:

[0066] S1. Feeding: Add a variety of raw materials to be mixed into the tank body 1 from the feed inlet 14 in sequence;

[0067] S2. Filtration: In the initial state, the stirring mechanism is in state one. At this time, start the driving motor 13, and the stirring mechanism can be driven to rotate through the driving shaft 11. During this process, the raw materials in the tank body 1 will pass through the filter holes 221 on the stirring rod 22, while the impurities in the raw materials will be intercepted on one side of the stirring rod 22, realizing the filtration of the raw materials;

[0068] S3. Stirring: After the filtration of the materials is completed, the stirring mechanism is switched to state two through the adjustment mechanism. At this time, the stirring mechanism is driven to continue rotating through the driving shaft 11, and the raw materials can be stirred by a plurality of stirring rods 22 arranged in a staggered manner, so that a variety of raw materials are mixed evenly;

[0069] S4. Cleaning: During the process of the stirring mechanism switching from state one to state two, the cleaning mechanism can clean and collect the intercepted impurities;

[0070] S5. Discharging: Discharge the mixed materials from the discharge port 15 at the lower end of the tank body 1.

[0071] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A mixing device for biodiesel processing, comprising a tank body and a drive shaft, characterized in that: It also includes a stirring mechanism, a cleaning mechanism and an adjusting mechanism arranged in the tank body; The stirring mechanism includes a plurality of stirring components, each of which includes a cross sleeve and two stirring rods. The cross sleeves in the plurality of stirring components are sequentially sleeved on the outer side of the driving shaft along the axial direction of the driving shaft, and the two stirring rods are symmetrically arranged on the cross sleeve along the radial direction of the tank body. Each stirring rod is hollow and has filter holes densely distributed on the circumference. The cleaning mechanism is provided in a plurality of groups and is respectively provided corresponding to the plurality of stirring components. Each cleaning mechanism is provided on the corresponding cross sleeve and is used to clean the outer circumference of the stirring rod. The stirring mechanism has two states: in state one, a plurality of stirring components are arranged in an array with equal spacing along the axial direction of the driving shaft, at which time two adjacent groups of cleaning mechanisms are close to each other, and are used to close the channel formed between two adjacent stirring rods; in state two, the stirring mechanism is arranged in a double helix shape, at which time two adjacent groups of cleaning mechanisms are away from each other, so that the channel between the stirring rods is open; The adjusting mechanism is used to drive the multiple stirring components to rotate relative to the driving shaft from top to bottom around the axis of the driving shaft, and the rotation angles of the multiple stirring components decrease from top to bottom, so that the stirring mechanism switches between state one and state two; The cleaning mechanism includes two arc plates and a driving structure. The two arc plates are symmetrically arranged on the upper and lower sides of the stirring rod, and the inner arc surfaces of the two arc plates are opposite to each other. A scraper is provided between each arc plate and the stirring rod. One end of the scraper is hinged to the inner arc surface of the arc plate through a torsion spring, and the other end is in contact with the outer peripheral side of the stirring rod. The driving structure is used to drive the two arc plates in the same group of cleaning mechanisms to approach or move away from each other, so that when the stirring mechanism is in state one, the outer arc surfaces of the two arc plates located between two adjacent stirring rods are in contact, and when the stirring mechanism is in state two, the inner arc surfaces of the two arc plates located on the upper and lower sides of the stirring rod are in contact with the outer peripheral side of the stirring rod.

2. A mixing device for biodiesel processing according to claim 1, characterized in that: The interior of the drive shaft is hollow, and the lower end of the drive shaft passes through the bottom of the tank body and is connected to a flange. A plurality of vent holes 1 are provided on the side wall of the drive shaft, vent holes 2 are provided on each cross sleeve, and vent holes 3 are provided at the end of each stirring rod, so that the gas can pass through the drive shaft, cross sleeve and stirring rod in sequence and finally enter the interior of the tank body.

3. A mixing device for biodiesel processing according to claim 2, characterized in that: An annular cavity through which gas can flow is arranged on the cross sleeve, and the second vent hole is communicated with the first vent hole through the annular cavity.

4. A mixing device for biodiesel processing according to claim 1, characterized in that: The upper and lower end surfaces of each cross sleeve are provided with a rough structure. The cross sleeve at the bottom is fixedly connected to the drive shaft, and the other cross sleeves are movably sleeved on the outside of the drive shaft. The adjustment mechanism includes a driving member, which is arranged on the upper part of the drive shaft, and the output end is connected to the top cross sleeve, which can drive the top cross sleeve to move downward along the axial direction of the drive shaft so that the upper and lower end surfaces of two adjacent cross sleeves are in contact. At this time, the cross sleeve is in a locked state, so that multiple cross sleeves can rotate synchronously with the drive shaft.

5. A mixing device for biodiesel processing according to claim 4, characterized in that: A slide groove is provided at the lower end of each cross sleeve, and the slide groove is arranged along the circumference of the lower end of the cross sleeve. A slide rod is provided at the upper end of each cross sleeve, and the slide rod slides with the cross sleeve in the longitudinal direction. The upper end of the slide rod passes through the cross sleeve and extends into the slide groove provided on the upper cross sleeve, slidingly cooperating with the slide groove. The driving member can drive the uppermost cross sleeve to rotate relative to the driving shaft around the axis of the driving shaft.

6. A mixing device for biodiesel processing according to claim 5, characterized in that: The driving structure includes connecting rod 1, connecting rod 2 and a contact wheel. Connecting rod 1 is connected to the arc plate located on the upper side, and connecting rod 2 is connected to the arc plate located on the lower side. Connecting rod 1 and connecting rod 2 are both longitudinally arranged and slidingly matched with the cross sleeve. The contact wheel is connected to the end of the stirring rod, and the two sides are respectively in friction contact with connecting rod 1 and connecting rod 2. The lower end of the sliding rod passes through the cross sleeve and is connected to the arc plate located on the upper side, and the interior of the slide groove is inclined.

7. A mixing device for biodiesel processing according to claim 1, characterized in that: A collecting groove is provided on the inner arc surface of the arc plate located at the lower side, which is used to collect impurities scraped off by the scraper.

8. A mixing device for biodiesel processing according to claim 1, characterized in that: The tank body is equipped with a liquid level alarm and multiple observation windows.

9. A mixing process for biodiesel processing, characterized in that: A mixing device for biodiesel processing according to any one of claims 1 to 8 is used, comprising the following steps: S1. Adding materials: Add various raw materials to be mixed into the tank in sequence; S2, filtration: in the initial state, the stirring mechanism is in state 1, at this time, the stirring mechanism is driven to rotate by the driving shaft, and the material can be filtered through the filter holes on the stirring rod, and the impurities in the material are intercepted on the outer peripheral side of the stirring rod; S3, stirring: after the filtering of the material is completed, the stirring mechanism is switched to state 2 through the adjustment mechanism, at which time the stirring mechanism is driven to rotate by the driving shaft, and the material can be stirred by the staggered stirring rods to make the material mixed evenly; S4, cleaning: during the process of the stirring mechanism switching from state 1 to state 2, the cleaning mechanism can clean and collect the intercepted impurities; S5. Discharging: Discharging the mixed materials from the tank.

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