A biodiesel flash tower

Abstract

This utility model relates to a biodiesel flash distillation tower, including a support frame, within which a flash distillation tower body is housed. A rotating locking mechanism is provided between the support frame and the flash distillation tower body. A detachable cover is provided at the upper end of the flash distillation tower body. A discharge pipe is provided at the lower end of the flash distillation tower body. A filter screen is horizontally arranged inside the flash distillation tower body. A cleaning mechanism is provided on the flash distillation tower body, containing a scraping mechanism. The cleaning mechanism includes a box located above the cover, with a rotatable winding roller horizontally arranged inside the box. A pull rope is wound around the winding roller, with one end of the pull rope fixed to the center of the filter screen. This biodiesel flash distillation tower, through the combination of a polyurethane pull rope and a reciprocating screw winding mechanism, effectively improves transmission stability and reduces wear rate, avoiding the particle accumulation problem of traditional gear transmissions.

Description

Technical Field

[0001] This utility model relates to the field of biodiesel technology, specifically a biodiesel flash distillation tower. Background Technology

[0002] Biodiesel refers to fatty acid methyl esters or ethyl esters formed by esterification of vegetable oils (such as rapeseed oil, soybean oil, peanut oil, corn oil, cottonseed oil, etc.), animal oils (such as fish oil, lard, tallow, mutton tallow, etc.), waste oils, or microbial oils with methanol or ethanol. Biodiesel is a typical "green energy" source, characterized by good environmental performance, good engine starting performance, good fuel performance, and a wide range of renewable raw material sources. Vigorously developing biodiesel is of significant strategic importance for sustainable economic development, promoting energy substitution, reducing environmental pressure, and controlling urban air pollution. The processing of biodiesel requires the use of a de-alcoholization flash distillation tower to remove alcohol from the biodiesel.

[0003] Chinese patent document with application number CN201921769020.X discloses a flash distillation tower for biodiesel production. It includes a flash distillation tower body, a horizontally positioned base at the lower end of the body, and a rotating mechanism connecting the base to the body. The upper end of the body has a communication hole for external connection, and a cap matching the communication hole is also located at the upper end. The cap is connected to the body via a connecting mechanism. A filtration mechanism is located within the body. The upper sidewall is equipped with a collection mechanism, and the lower end of the flash tower body is equipped with two symmetrically arranged discharge pipes. Both discharge pipes penetrate the bottom wall of the flash tower body, and each discharge pipe is equipped with a control valve. The filtration mechanism drives the gear to rotate through the drive motor. The gear meshes with the tooth groove of the moving rod to realize the vertical movement of the filter screen in the flash tower to separate the solid catalyst in the biodiesel. The rotating mechanism supports the flash tower body: the flash tower body is rotatably connected to the vertical plate of the base through the rotating rod, which can drive the tower body to rotate for easy operation, but is locked by the second sliding locking block.

[0004] Regarding the aforementioned technologies, the inventors believe that the following defects exist: the device has obvious defects in its transmission through the meshing of gears and moving rod teeth. Solid catalysts tend to adhere to the moving rod teeth and gear surfaces during the separation process, but the equipment is not equipped with a targeted scraping device, causing particulate matter to be carried out of the tower body with the transmission mechanism. This not only pollutes the external environment of the equipment but also aggravates gear wear, affecting the stability and lifespan of the transmission system. Therefore, a biodiesel flash distillation tower is proposed to solve the above problems. Utility Model Content

[0005] The main objective of this invention is to provide a biodiesel flash distillation tower that solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a biodiesel flash distillation tower, including a support frame, a flash distillation tower body disposed within the support frame, a rotation locking mechanism disposed between the support frame and the flash distillation tower body, a detachable cover disposed at the upper end of the flash distillation tower body, a discharge pipe disposed at the lower end of the flash distillation tower body, a filter screen disposed horizontally within the flash distillation tower body, a cleaning mechanism disposed on the flash distillation tower body, and a scraping mechanism disposed within the cleaning mechanism;

[0007] The cleaning mechanism includes a box located at the top of the cover, a rotatable winding roller arranged horizontally inside the box, a pull rope wound around the winding roller, and one end of the pull rope being fixed to the center of the filter screen.

[0008] Furthermore, a reciprocating lead screw is arranged laterally inside the housing, and gears are fixed on both the winding roller and the reciprocating lead screw, with the two gears meshing together.

[0009] Furthermore, the reciprocating screw is threaded with a threaded block that can move left and right, and a fixing ring for the pull rope to pass through is fixed on one side of the threaded block.

[0010] Furthermore, the pull rope is made of polyurethane (PU), and one end of the reciprocating screw is driven to rotate by an external motor.

[0011] Furthermore, the scraping mechanism includes two fixed blocks disposed inside the box. A telescopic rod is fixed to one side of the fixed block, a spring is sleeved on the telescopic rod, and an arc-shaped block for scraping off particles on the outside of the pull rope is fixed to one end of the telescopic rod.

[0012] Furthermore, a nitrile rubber is fixed to the inner side of the arc-shaped block, and the two ends of the spring are fixed to the side walls of the arc-shaped block and the fixed block, respectively.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] This biodiesel flash distillation tower effectively improves transmission stability and reduces wear rate through a polyurethane pull rope combined with a reciprocating screw wiring mechanism, avoiding the particle accumulation problem of traditional gear transmission. The nitrile rubber arc block scraping structure cleans the pull rope surface in real time, keeping the particle adhesion rate at an extremely low level and eliminating equipment contamination and component wear. Precise filter lifting control combined with an online cleaning mechanism significantly improves catalyst separation efficiency and reduces residue. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the gear and take-up roller of this utility model;

[0017] Figure 3This is a top view of the arc-shaped block and nitrile rubber of this utility model.

[0018] In the diagram: 1. Support frame; 2. Rotary locking mechanism; 3. Flash tower body; 4. Cleaning mechanism; 5. Scraping mechanism; 6. Filter screen; 7. Discharge pipe; 8. Cover; 401. Pull rope; 402. Counterweight; 403. Fixing ring; 404. Threaded block; 405. Reciprocating screw; 406. Gear; 407. Winding roller; 408. Box body; 501. Arc-shaped block; 502. Nitrile rubber; 503. Fixing block; 504. Telescopic rod; 505. Spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-2 This embodiment of a biodiesel flash distillation tower includes a support frame 1, a flash distillation tower body 3 housed within the support frame 1, a rotating locking mechanism 2 between the support frame 1 and the flash distillation tower body 3, the rotating locking mechanism 2 allowing the flash distillation tower body 3 to rotate around the support frame 1, facilitating adjustment of the material flow angle, a detachable cap 8 at the upper end of the flash distillation tower body 3, a discharge pipe 7 at the lower end of the flash distillation tower body 3, a filter screen 6 horizontally arranged inside the flash distillation tower body 3, a counterweight block 402 fixed to the outer side of the lower end of the filter screen 6 to increase the weight of the filter screen 6 and prevent it from falling off properly, a cleaning mechanism 4 on the flash distillation tower body 3, and a scraping mechanism 5 inside the cleaning mechanism 4.

[0021] The cleaning mechanism 4 includes a box 408 located on the upper end of the cover 8. A rotatable take-up roller 407 is arranged horizontally inside the box 408. A pull rope 401 is wound around the take-up roller 407. One end of the pull rope 401 is fixed to the center of the filter screen 6.

[0022] When the winding roller 407 of the device is driven to rotate by an external motor, the pull rope 401 pulls the filter screen 6 to make a vertical reciprocating motion inside the tower: when rising, the filter screen intercepts solid catalysts in biodiesel, and when descending, it approaches the discharge pipe 7 to facilitate material discharge. The pull rope 401 is fixed to the center of the filter screen 6 to ensure that the filter screen is subjected to uniform force during the lifting process and to avoid tilting and jamming.

[0023] The housing 408 contains a reciprocating lead screw 405 arranged laterally. Gears 406 are fixed to both the take-up roller 407 and the reciprocating lead screw 405. The two gears 406 mesh with each other. When the take-up roller 407 rotates, its gears 406 drive the gears 406 of the reciprocating lead screw 405 to rotate synchronously. The thread on the lead screw drives the threaded block 404 to reciprocate along the lead screw axis. This movement is synchronized with the winding action of the take-up roller 407, ensuring that the pull rope 401 is evenly arranged on the take-up roller 407 along a preset trajectory. This avoids the tangled and chaotic winding of the pull rope 401 caused by traditional single-roller winding, improves transmission stability, and reduces localized wear.

[0024] Meanwhile, a threaded block 404 that can move left and right is threadedly connected to the reciprocating screw 405. A sliding groove is provided in the housing 408 to slide with the end of the threaded block 404. A fixing ring 403 is fixed on one side of the threaded block 404 for the pull rope 401 to pass through. When the reciprocating screw 405 rotates, the threaded block 404 moves left and right along the screw axis due to the threaded transmission. The fixing ring 403 moves synchronously with the threaded block 404 and guides the pull rope 401. When the take-up roller 407 winds the pull rope 401, the lateral movement of the fixing ring 403 makes the pull rope 401 evenly distributed on the surface of the take-up roller 407, avoiding stacking and compression.

[0025] In addition, the pull rope 401 is made of polyurethane (PU). The polyurethane pull rope 401 utilizes its oil-resistant and wear-resistant properties, making it less prone to expansion or breakage when in contact with biodiesel, thus adapting to the high-viscosity oil environment inside the tower. One end of the reciprocating screw 405 is driven to rotate by an external motor.

[0026] Please see Figure 1-3 In this embodiment, the scraping mechanism 5 includes two fixing blocks 503 disposed inside the housing 408. A telescopic rod 504 is fixed on one side of the fixing block 503. A spring 505 is sleeved on the telescopic rod 504. An arc-shaped block 501 for scraping particles on the outside of the pull rope 401 is fixed at one end of the telescopic rod 504.

[0027] When the pull rope 401 passes through the housing 408, the arc-shaped block 501, under the elastic force of the spring 505, adheres tightly to the surface of the pull rope 401, and slides relative to it in the direction of movement of the pull rope 401. The telescopic rod 504 allows the arc-shaped block 501 to adapt to changes in the diameter of the pull rope 401, and the spring 505 continuously provides contact pressure to ensure the scraping effect. When the pull rope 401 moves upward, the arc-shaped block 501 scrapes away oil and particles. When it moves downward, the spring 505 returns to its original position and maintains contact, and the scraped contaminants fall into the collection tank inside the housing 408, preventing spillage and contamination of the equipment.

[0028] The arc-shaped block 501 has a nitrile rubber 502 fixed to its inner side. The two ends of the spring 505 are fixed to the side walls of the arc-shaped block 501 and the fixing block 503, respectively. The inner side of the nitrile rubber 502 has excellent oil resistance and wear resistance. When it comes into contact with the polyurethane pull rope 401, it can effectively scrape off the oil film while avoiding damage to the surface of the pull rope 401. The fixing structure at both ends of the spring 505 ensures stable elasticity. When particles adhere to the surface of the pull rope 401, causing an increase in force on the arc-shaped block 501, the spring 505 compresses and buffers, preventing hard friction damage to the pull rope 401, while simultaneously squeezing the particles off.

[0029] The working principle of the above embodiments is as follows:

[0030] The main body 3 of the flash distillation tower is mounted on the support frame 1 via a rotating locking mechanism 2. The angle can be adjusted and locked according to operating conditions. A removable cap 8 at the top facilitates equipment maintenance. After biodiesel enters the tower, a drive motor rotates the take-up roller 407, which pulls the filter screen 6 vertically reciprocating within the tower via a pull rope 401. As it rises, the filter screen intercepts the solid catalyst; as it descends, it approaches the discharge pipe 7 so that the de-ethanolified biodiesel can be discharged through the control valve. When the take-up roller 407 rotates, it drives the reciprocating screw 405 to rotate synchronously via a gear 406. The screw drives the threaded block 404 and the fixing ring 403 to move left and right, ensuring that the pull rope 401 is evenly arranged on the take-up roller 407, preventing entanglement and wear. As the pull rope 401 passes through the housing 408, the nitrile rubber arc-shaped block 501, under the elastic force of the spring 505, adheres tightly to its surface. With the movement of the pull rope 401, it scrapes off the attached oil and particulate matter. The telescopic rod 504 ensures that the arc-shaped block 501 adapts to changes in the diameter of the pull rope 401, and the scraped contaminants fall into the collection tank inside the housing. The screen inside the collection tank further filters the discharged biodiesel, ultimately achieving efficient catalyst separation and biodiesel purification.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A biodiesel flash distillation tower, comprising a support frame (1), a flash distillation tower body (3) disposed within the support frame (1), a rotation locking mechanism (2) disposed between the support frame (1) and the flash distillation tower body (3), and a detachable cap (8) disposed at the upper end of the flash distillation tower body (3), characterized in that: The flash tower body (3) has a discharge pipe (7) at the lower end, a filter screen (6) is arranged horizontally inside the flash tower body (3), a cleaning mechanism (4) is provided on the flash tower body (3), and a scraping mechanism (5) is provided inside the cleaning mechanism (4); The cleaning mechanism (4) includes a box (408) located on the upper end of the cover (8). A rotatable take-up roller (407) is arranged horizontally inside the box (408). A pull rope (401) is wound around the take-up roller (407). One end of the pull rope (401) is fixed to the center of the filter screen (6).

2. A biodiesel flash tower according to claim 1, characterized in that: A reciprocating lead screw (405) is arranged horizontally inside the housing (408). Gears (406) are fixed on both the take-up roller (407) and the reciprocating lead screw (405), and the two gears (406) mesh with each other.

3. A biodiesel flash tower according to claim 2, characterized in that: The reciprocating lead screw (405) is threaded with a threaded block (404) that can move left and right. A fixing ring (403) for the pull rope (401) to pass through is fixed on one side of the threaded block (404).

4. A biodiesel flash tower according to claim 1, characterized in that: The pull rope (401) is made of polyurethane (PU), and one end of the reciprocating screw (405) is driven to rotate by an external motor.

5. A biodiesel flash tower as claimed in claim 1, wherein: The scraping mechanism (5) includes two fixed blocks (503) disposed in the housing (408). A telescopic rod (504) is fixed on one side of the fixed block (503). A spring (505) is sleeved on the telescopic rod (504). An arc-shaped block (501) for scraping particles on the outside of the pull rope (401) is fixed at one end of the telescopic rod (504).

6. A biodiesel flash tower according to claim 5, characterized in that: The inner side of the arc-shaped block (501) is fixed with nitrile rubber (502), and the two ends of the spring (505) are fixed to the side walls of the arc-shaped block (501) and the fixed block (503) respectively.

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