Multistage filtration furan resin raw material pretreatment device

Abstract

The utility model relates to the technical field of furan resin raw material treatment, in particular to a multistage filtering furan resin raw material pretreatment device which comprises a filtering cabin, a plurality of partition plates are fixedly connected to the inner wall of the filtering cabin and used for dividing the filtering cabin into a plurality of cavities, and a rotating disc is rotationally connected to the inner wall of each cavity. According to the present invention, the raw materials are injected into the channel formed by the first through hole, the second through hole and the third through hole through the feeding pipe, the filtration is performed through the plurality of the filtration plates in the third through hole, and the sizes of the filtration holes in the filtration plates are sequentially reduced from bottom to top, such that the raw materials are sequentially subjected to multi-stage filtration before being conveyed to the discharging pipe so as to achieve the filtration effect; and when the filtering plates are blocked to influence material circulation, the rotating disc connected to the rotating shaft can be driven by the stepping motor to rotate, and the unblocked filtering plates in the third through holes in the rotating disc are rotated to the position for filtering the materials, so that the phenomenon that the filtering efficiency of the materials is influenced by blocking is avoided.

Description

Technical Field

[0001] This utility model relates to the field of furan resin raw material processing technology, specifically a multi-stage filtration furan resin raw material pretreatment device. Background Technology

[0002] Furan resins are a general term for a class of synthetic resins containing a furan ring in their molecular structure. Furfural is the most basic raw material for manufacturing furran resins, which are formed through the condensation reaction of furfural with other compounds. Furfural is a colorless, transparent, oily liquid with a special odor similar to benzaldehyde. Furfural mainly comes from agricultural by-products such as cottonseed hulls, rice hulls, corn cobs, and corn stalks. Because some solid impurities from agricultural by-products may fall into the furfural during production, it must first be screened and filtered to remove these solid impurities before use in furan resin production. Existing screening devices include a base plate, support plate, filter box, filter cylinder, inlet pipe, and outlet pipe. The filter box is fixedly installed on the upper part of the base plate via the support plate. The filter box has an internal chamber. The filter cylinder is fixedly installed inside the chamber of the filter box and has a cavity. The filter cylinder has multiple sets of filter holes communicating with the cavity. The outlet end of the inlet pipe communicates with the cavity of the filter cylinder and is located outside the filter box. The outlet pipe is fixedly installed inside the chamber. The existing screening device is fixedly installed at the bottom of the filter box, and a valve is installed on the drain pipe. When using the existing screening device, first open the valve on the drain pipe, and then pour the furfural raw material into the cavity of the filter cylinder through the inlet pipe. After entering the cavity of the filter cylinder, the furfural is discharged into the chamber of the filter box due to its own fluidity through the multiple sets of filter holes on the filter cylinder. Solid impurities in the furfural remain in the cavity of the filter cylinder. The furfural in the chamber of the filter box is discharged through the drain pipe and collected. During the use of the existing screening device, the furfural is discharged through the multiple sets of filter holes in the filter cylinder by its own fluidity, which is slow, resulting in low screening efficiency and long working time.

[0003] Existing technology, such as publication number CN217698240U, provides a furan resin raw material screening device, including a base plate, a support plate, a filter box, a filter cylinder, an inlet pipe, and a drain pipe. The filter box is fixedly installed on the upper part of the base plate via the support plate. The filter box has a chamber inside, and the filter cylinder has a cavity inside. The filter cylinder has multiple sets of filter holes communicating with the cavity. The output end of the inlet pipe communicates with the cavity of the filter cylinder and is fixedly installed on the filter cylinder. The device also includes a rotary joint, a drain pipe, a first valve, multiple sets of baffles, a drive device, and an inlet device. The inlet pipe is rotatably installed on the filter box and the rotary joint. The input end of the inlet pipe is connected to the output end of the rotary joint, which is fixedly installed on the upper part of the filter box. The output end of the inlet device is connected to the input end of the rotary joint. This invention facilitates the discharge of furfural through multiple sets of filter holes, improves the filtration efficiency of the filter cylinder for furfural, and saves time.

[0004] In this scheme, furfural rotates within the filter cartridge cavity. During this rotation, the furfural is discharged through multiple sets of filter holes due to centrifugal force, promoting its discharge and improving the filter cartridge's filtration efficiency. However, in actual solid-liquid separation using centrifugal force, some larger particles can easily remain inside the filter cartridge, clogging the filter holes and leading to a decrease in subsequent filtration efficiency. Therefore, we propose a multi-stage filtration pretreatment device for furan resin raw materials. Utility Model Content

[0005] The purpose of this invention is to provide a multi-stage filtration furan resin raw material pretreatment device. This multi-stage filtration furan resin raw material pretreatment device solves the problem that some larger particles are easily left in the filter cylinder and clog the filter holes during the solid-liquid separation process by centrifugation, resulting in a decrease in the subsequent filtration effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A multi-stage filtration furan resin raw material pretreatment device includes a filter chamber, the inner wall of which is fixedly connected with several partitions to divide the filter chamber into several cavities, and the inner wall of each cavity is rotatably connected with a turntable. The inner wall of the circular hole in the center of the partition is rotatably connected with a rotating shaft, which is used to drive the turntable to rotate.

[0008] The filter chamber is symmetrically provided with first through holes, the partition is provided with second through holes at the positions corresponding to the first through holes, the turntable is provided with third through holes at the positions corresponding to the second through holes, and the inner wall of the third through holes is fixedly connected with a filter plate.

[0009] Preferably, the first through hole, the second through hole, and the third through hole have the same diameter, so that they are on the same axis and form a channel for material to pass through.

[0010] Preferably, the size of the filter holes on the filter plate inside the third through hole is arranged in a manner that gradually decreases from bottom to top.

[0011] Preferably, the notch on the partition is provided with an arc-shaped scraper for scraping off impurities attached to the bottom of the filter plate, and the filter chamber is hinged with a door corresponding to the position of the arc-shaped scraper.

[0012] Preferably, a feed pipe is fixedly connected to the bottom of the filter chamber at the position of the first through hole on the front side, for connecting a pressurizing pump, and a discharge pipe is fixedly connected to the top of the filter chamber at the position corresponding to the feed pipe.

[0013] Preferably, a fan is fixedly connected to the first through hole at the top of the filter chamber where the discharge pipe is not connected.

[0014] Preferably, support legs are fixedly connected to both sides of the bottom of the filter chamber, and a stepper motor for driving the rotating shaft is fixedly connected between the two support legs.

[0015] By employing the above technical solution, this utility model provides a multi-stage filtration furan resin raw material pretreatment device. It possesses at least the following beneficial effects:

[0016] I. This utility model injects material into a channel formed by the first through hole, the second through hole, and the third through hole through the feed pipe. The material is then filtered by several filter plates in the third through hole. Since the size of the filter holes on the filter plates is arranged in a manner that decreases from bottom to top, multi-stage filtration is performed before the material is conveyed to the discharge pipe to ensure filtration efficiency. When the filter plates become clogged and affect the flow of material, a turntable connected to the rotating shaft can be driven by a stepper motor to rotate the unclogged filter plates in the third through holes on the turntable to the position where the material is to be filtered, so as to avoid clogging and affecting the filtration efficiency of the material.

[0017] Second, this utility model sets an arc-shaped scraper at the notch position on the partition plate, so that when the turntable rotates to switch filter plates, the filter plate with impurities will pass through the position of the arc-shaped scraper, and some impurities on the surface will be scraped off by the arc-shaped scraper. When the filter plate is switched, the filter plate will move into the channel formed by the first through hole, the second through hole and the third through hole below the fan. At this time, the fan is started to drive the airflow to further unclog the filter holes on the filter plate, so as to facilitate subsequent switching and use. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the filter chamber in this utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the filter chamber in this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the turntable and the rotating shaft in this utility model.

[0023] In the diagram: 1. Filter chamber; 10. First through hole; 11. Door; 12. Partition; 13. Second through hole; 14. Arc-shaped scraper; 15. Round hole; 2. Feed pipe; 3. Discharge pipe; 4. Fan; 5. Turntable; 50. Third through hole; 51. Filter plate; 6. Rotating shaft; 7. Support leg; 8. Stepper motor. Detailed Implementation

[0024] 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.

[0025] A multi-stage filtration furan resin raw material pretreatment device, such as Figure 1 - Figure 4 As shown, the system includes a filter chamber 1. Several partitions 12 are fixedly connected to the inner wall of the filter chamber 1, dividing it into several cavities. A turntable 5 is rotatably connected to the inner wall of each cavity. A rotating shaft 6 is rotatably connected to the inner wall of a circular hole 15 at the center of each partition 12, driving the turntable 5 to rotate. First through holes 10 are symmetrically provided on the filter chamber 1. Second through holes 13 are provided on each partition 12 corresponding to the positions of the first through holes 10. Third through holes 50 are provided on each turntable 5 corresponding to the positions of the second through holes 13. A filter plate 51 is fixedly connected to the inner wall of the third through hole 50. The first through holes 10, second through holes 13, and third through holes 50 are rotatably connected to the inner wall of the third through hole 50. The holes 13, the third through hole 50 and the third through hole are of the same size, so that they are on the same axis and form a channel for material to pass through. The size of the filter holes on the filter plate 51 inside the third through hole 50 is arranged in a manner that decreases from bottom to top. Support legs 7 are fixedly connected to both sides of the bottom of the filter chamber 1. A stepper motor 8 for driving the rotating shaft 6 to rotate is fixedly connected between the two support legs 7. The feed pipe 2 is fixedly connected to the first through hole 10 at the bottom of the filter chamber 1, which is used to connect to the pressure pump. The discharge pipe 3 is fixedly connected to the top of the filter chamber 1 at the position corresponding to the feed pipe 2.

[0026] In this embodiment, the material is pressurized and pumped into the feed pipe 2, and then injected into the channel formed by the first through hole 10, the second through hole 13, and the third through hole 50. The material is then filtered by several filter plates 51 in the third through hole 50. Since the size of the filter holes on the filter plates 51 is arranged in a manner that decreases from bottom to top, multi-stage filtration is performed before the material is conveyed to the discharge pipe 3 to ensure filtration efficiency. When the filter plates 51 become clogged and affect the flow of material, the turntable 5 connected to the rotating shaft 6 can be rotated by the stepper motor 8 to rotate the unclogged filter plates 51 in the third through hole 50 on the turntable 5 to the position for filtering material, so as to avoid clogging and affecting the filtration efficiency of the material.

[0027] like Figure 2 , Figure 3 , Figure 4As shown, preferably, an arc-shaped scraper 14 is provided at the notch position on the partition 12 to scrape off impurities attached to the bottom of the filter plate 51. A door 11 is hinged to the filter chamber 1 at the position corresponding to the arc-shaped scraper 14. When too much impurity accumulates at the notch position of the partition 12, the door 11 can be opened for cleaning. A fan 4 is fixedly connected to the first through hole 10 at the top of the filter chamber 1 where the discharge pipe 3 is not connected.

[0028] In this embodiment, by setting an arc-shaped scraper 14 at the notch position on the partition plate 12, when the turntable 5 rotates to switch the filter plate 51, the filter plate 51 with impurities will pass through the position of the arc-shaped scraper 14, and some impurities on the surface will be scraped off by the arc-shaped scraper 14. When the filter plate 51 is switched, the filter plate 51 will move into the channel formed by the first through hole 10, the second through hole 13, and the third through hole 50 below the fan 4. At this time, by starting the fan 4, the airflow is driven to further unclog the filter holes on the filter plate 51, so as to facilitate subsequent switching and use.

[0029] In use, the multi-stage filtration furan resin raw material pretreatment device of this utility model pressurizes and pumps the material into the feed pipe 2. The material is then injected into the channel formed by the first through hole 10, the second through hole 13, and the third through hole 50. It is then filtered by several filter plates 51 within the third through hole 50. Since the size of the filter holes on the filter plates 51 decreases from bottom to top, multi-stage filtration is performed before the material is conveyed to the discharge pipe 3 to ensure filtration efficiency. Furthermore, when the filter plates 51 become clogged, affecting the material flow, the stepper motor 8 drives the turntable 5 connected to the rotating shaft 6 to rotate, thus clearing the third through hole 50 on the turntable 5. The filter plate 51 that is not clogged rotates to the position of the material to be filtered, so as to avoid clogging and affecting the filtration efficiency of the material. By setting an arc-shaped scraper 14 at the notch on the partition plate 12, when the turntable 5 rotates to switch the filter plate 51, the filter plate 51 with impurities will pass through the position of the arc-shaped scraper 14, and some impurities on the surface will be scraped off by the arc-shaped scraper 14. When the filter plate 51 is switched, the filter plate 51 will move into the channel formed by the first through hole 10, the second through hole 13, and the third through hole 50 below the fan 4. At this time, the fan 4 is started to drive the airflow to further unclog the filter holes on the filter plate 51, so as to facilitate subsequent switching and use.

[0030] 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 process, method, article, or apparatus.

[0031] 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 multi-stage filtration furan resin raw material pretreatment device comprising a filtration cabin (1), characterized in that: The inner wall of the filter cabin (1) is fixedly connected with a plurality of partitions (12) for dividing the filter cabin (1) into a plurality of cavities, and the inner wall of each cavity is rotatably connected with a rotating disc (5); the central circular hole (15) of the partition (12) is rotatably connected with a rotating shaft (6), and the rotating shaft (6) is used for driving the rotating disc (5) to rotate. The filter cabin (1) is symmetrically provided with a first through hole (10), the partition (12) is provided with a second through hole (13) corresponding to the position of the first through hole (10), the rotating disc (5) is provided with a third through hole (50) corresponding to the position of the second through hole (13), and the inner wall of the third through hole (50) is fixedly connected with a filter plate (51).

2. A multi-stage filtered furan resin feedstock pretreatment apparatus according to claim 1, characterized by: The first through hole (10), the second through hole (13) and the third through hole (50) have the same hole diameter, and are located on the same axis line to form a material passing channel.

3. A multi-stage filtered furan resin feedstock pretreatment apparatus according to claim 2, characterized by: The size of the filter hole on the filter plate (51) in the third through hole (50) is arranged in a manner that decreases from bottom to top.

4. A multi-stage filtered furan resin feedstock pretreatment apparatus according to claim 1, characterized by: The position of the notch on the partition (12) is provided with an arc-shaped scraping blade (14) for scraping off impurities attached to the bottom of the filter plate (51), and the filter cabin (1) is hingedly connected with a cabin door (11) corresponding to the position of the arc-shaped scraping blade (14).

5. A multi-stage filtered furan resin feedstock pretreatment apparatus according to claim 1, characterized by: The position of the first through hole (10) at the front position of the bottom of the filter cabin (1) is fixedly connected with a feeding pipe (2) for connecting a pressure pump, and the position of the filter cabin (1) corresponding to the feeding pipe (2) at the top is fixedly connected with a discharge pipe (3).

6. A multi-stage filtered furan resin feedstock pretreatment apparatus according to claim 5, characterized by: The first through hole (10) of the filter cabin (1) at the top is fixedly connected with a fan (4) without connecting the discharge pipe (3).

7. A multi-stage filtered furan resin feedstock pretreatment apparatus according to claim 1, characterized by: The bottom of the filter cabin (1) is fixedly connected with a support leg (7) on each side, and a stepping motor (8) for driving the rotating shaft (6) to rotate is fixedly connected between the two support legs (7).

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