Filtering device for PPDO synthesis

Abstract

The utility model discloses a filter device for PPDO synthesis, and relates to the technical field of PPDO synthesis, the filter device comprises a filter box, the upper end of the filter box is communicated with a feeding pipe, a crushing assembly is arranged in the filter box, a first filter plate and a second filter plate are arranged in the filter box, a collecting pipe is arranged in the filter box, and the collecting pipe is communicated with the upper end of the filter box. According to the PPDO material filtering device, the first filtering plate and the second filtering plate are arranged, so that PPDO materials can be conveniently filtered for multiple times, meanwhile, a fixing shaft is matched with an elastic reset plate through a mounting wheel, a push rod, a first guide block and the elastic reset plate for use, and therefore the PPDO materials can be conveniently filtered. The first filter plate and the second filter plate can swing in a reciprocating manner, so that the filtering effect of the first filter plate and the second filter plate is improved, materials are conveyed to one end of the mounting pipe through the spiral plate, and the materials are conveyed into the feeding pipe again through the conveying pipe, so that the materials can be crushed and filtered again.

Description

Technical Field

[0001] The utility model relates to the technical field of PPDO synthesis, in particular to a filtering device for PPDO synthesis. Background Art

[0002] PPDO (polydioxanone) is a synthetic polymer used in the medical field and is widely used in the preparation of medical materials. This type of polymer has excellent biocompatibility and degradability, gradually replacing the clinical application of traditional materials. Polydioxanone PPDO has a wide range of applications in the medical field. Among them, the most common application is as a suture material for surgical suture. Due to its biodegradable properties, PPDO sutures can avoid the need for secondary surgery to remove traditional sutures, alleviating the pain of patients.

[0003] At present, the synthesis of PPDO is mainly based on the ring-opening polymerization of PDO. The acyloxy bond of PDO is broken and opened by the action of the catalyst to generate a linear structure with an active species at the end. The active unit continues to attack the PDO ester group to achieve the growth of the molecular chain and then generate PPDO. When PDDO is catalytically reacted, PDDO is mostly in block form. Therefore, it is necessary to take out the PPDO after the reaction and crush it into fine particles with a particle size of <2mm. When crushing, the crushed particles need to be filtered and screened for subsequent use of PDDO. When the existing PDDO filtering device is used, the particles that are not completely crushed will accumulate on the top of the filter screen. After the crushing is completed, they are collected uniformly and then crushed multiple times until the use requirements are met. When this method is used, the particles will cause clogging of the filter screen, making it inconvenient for continuous processing. When repeated crushing is performed, the workload of the staff will increase and the processing efficiency will be affected. Utility Model Content

[0004] The utility model aims to provide a filtering device for PPDO synthesis to solve the problems in the background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A filtering device for PPDO synthesis comprises a filter box, wherein the upper end of the filter box is connected to a feed pipe, a crushing assembly for crushing PPDO block materials is provided inside the filter box and at one end of the feed pipe, a first filter plate is provided inside the filter box and at the output end of the feed pipe, a second filter plate is provided inside the filter box and below the first filter plate, one end of the first filter plate and the second filter plate are both provided with a rotating shaft, and the rotating shafts on both sides of the first filter plate and the second filter plate are both rotatably arranged in the mounting holes inside the filter box, a collecting pipe is fixedly provided inside the filter box and at the other end of the first filter plate and the second filter plate, a material baffle is provided at the discharge port at the bottom end of the filter box, a swinging mechanism for increasing the filtering effect on the materials is provided inside the filter box and at the bottom ends of the first filter plate and the second filter plate, and a return mechanism for facilitating re-crushing of the filtered materials is provided in communication with the output end of the collecting pipe.

[0007] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0008] In an optional scheme: the crushing assembly includes a first crushing roller and a second crushing roller, the first crushing roller and the second crushing roller are symmetrically arranged, the first crushing roller and the second crushing roller are rotatably arranged inside the installation box, the installation box is fixedly arranged at the upper end of the filter box, the feed port at the upper end of the installation box coincides with the output end of the feed pipe, the rotating shafts at both ends of the first crushing roller and the second crushing roller are rotatably arranged in the mounting hole inside the filter box, the rotating shafts at one end of the first crushing roller and the second crushing roller are respectively provided with a driven gear and a driving gear, a first driven wheel is fixedly arranged on the rotating shaft at one end of the second crushing roller, the first driven wheel is connected to the first driving wheel on the output end of the first motor through a belt, and the first motor is fixedly arranged at the upper end of the filter box.

[0009] In an optional scheme: the swing mechanism includes a first guide block, the first filter plate and the second filter plate are symmetrically provided with a first guide block at the bottom ends, the first guide block is tightly provided with a push rod at the bottom ends, several of the push rods are fixed on the mounting wheel, two coaxial mounting wheels are fixed on the fixed shaft, the two fixed shafts are rotatably arranged in the mounting holes on the inner side of the filter box, elastic reset plates are fixed at the inner side of the filter box corresponding to the upper ends of the first filter plate and the second filter plate, one end of the elastic reset plate is tightly attached to the upper ends of the first filter plate and the second filter plate, one end of the two fixed shafts are respectively fixed with a second driving wheel and a second driven wheel, the second driving wheel and the second driven wheel are connected by a second belt transmission, a third driven wheel is fixedly provided at one end of the fixed shaft at the bottom end of the first filter plate, the third driven wheel is transmission connected to the third driving wheel by a third belt, and the third driving wheel is fixed on the rotating shaft at one end of the first crushing roller.

[0010] In an optional solution: a roller is rotatably provided at one end of the push rod.

[0011] In an optional scheme: the return mechanism includes a mounting tube, the mounting tube is fixed on one side of the filter box, the mounting tube is connected with one end of the two collecting tubes respectively, a mounting shaft is rotatably provided inside the mounting tube, a spiral plate is fixed on the mounting shaft, a rotating shaft at one end of the mounting shaft is fixedly connected to the output end of the second motor, the second motor is fixed on the inner side of the mounting frame, the mounting frame is fixed on the upper end of the mounting tube, a second fixed tube is sleeved on the output end of the mounting tube, the second fixed tube is connected and arranged at one end of the transmission tube, a first fixed tube is sleeved on the other end of the transmission tube, the first fixed tube is connected and arranged on the feed pipe, and one end of the mounting tube is provided with a shaking material component to prevent the transmission tube from being blocked.

[0012] In an optional scheme: the material shaking assembly includes a second guide block, the second guide block is fixed on the second fixed tube, a push rod is tightly provided at the inclined surface of the second guide block, the push rod is fixed on one end of the rotating plate, a connecting shaft is fixed on the rotating plate, one end of the connecting shaft is rotatably arranged in the mounting groove at the upper end of the mounting tube, a torsion spring is provided at the connection between the connecting shaft and the mounting groove, a shift rod is tightly provided at the other side of the rotating plate, several of the shift rods are fixed on the output end of the second motor, a return spring is fixed between the bottom end of the transmission tube and the upper end of the filter box, a limit column is symmetrically provided at one end of the transmission tube, and the limit column is rotatably arranged in the mounting hole inside the first fixed tube.

[0013] In an optional solution: a ball is provided at one end of the push rod.

[0014] In an optional solution: the bottom end of the filter box is inclined.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] The utility model provides a first filter plate and a second filter plate, thereby facilitating multiple filtering of the PPDO material. At the same time, the rotating shafts at one end of the first filter plate and the second filter plate are rotatably arranged in the mounting hole inside the filter box. When the first crushing roller rotates, it drives the fixed shaft to rotate. The fixed shaft cooperates with the mounting wheel, the push rod and the first guide block to enable the first filter plate and the second filter plate to rotate. At the same time, under the action of the elastic reset plate, the first filter plate and the second filter plate can swing back and forth, thereby increasing the filtering effect of the first filter plate and the second filter plate, and preventing the accumulation of materials on the first filter plate and the second filter plate to cause blockage. At the same time, the materials filtered out by the first filter plate and the second filter plate are transmitted to the inside of the mounting tube through the collecting pipe, and are transmitted to one end of the mounting tube through the spiral plate. The materials are re-transported to the inside of the feeding tube through the transmission pipe, so that the materials can be crushed and filtered again, thereby reducing the workload of the staff and increasing the practicality of the filtering device for PPDO synthesis. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of the installation pipe of the utility model.

[0019] Figure 3 This is a schematic diagram of the installation of the elastic reset plate of the utility model.

[0020] Figure 4 This is a schematic diagram of the transmission tube structure of the utility model.

[0021] Figure 5 This is a schematic diagram of the installation wheel structure of the utility model.

[0022] Figure 6 This is a schematic diagram of the structure of the rotating plate of the utility model.

[0023] Notes on figure numbers: 11 filter box, 12 feed pipe, 13 first crushing roller, 14 second crushing roller, 15 mounting box, 16 first motor, 17 first filter plate, 18 second filter plate, 19 collecting tube, 20 mounting tube, 21 mounting shaft, 22 spiral plate, 23 second motor, 24 transmission tube, 25 mounting wheel, 26 first guide block, 27 elastic reset plate, 28 second guide block, 29 rotating plate, 30 lever, 31 reset spring. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] Example 1

[0026] In one embodiment, Figure 1-Figure 6 As shown, a filtering device for PPDO synthesis includes a filter box 11, the upper end of the filter box 11 is connected to a feed pipe 12, the filter box 11 is provided with a crushing assembly for crushing PPDO block materials at one end of the feed pipe 12, the filter box 11 is provided with a first filter plate 17 at the output end of the feed pipe 12, the filter box 11 is provided with a second filter plate 18 at the bottom of the first filter plate 17, one end of the first filter plate 17 and the second filter plate 18 are provided with a rotating shaft, the rotating shafts on both sides of the first filter plate 17 and the second filter plate 18 are rotatably arranged in the mounting holes inside the filter box 11, and the filter box 11 is provided with a first filter plate 17 at the output end of the feed pipe 12, and the second filter plate 18 is provided with a second filter plate 18 at the output end of the feed pipe 12. A collecting pipe 19 is fixedly provided at the other end of the first filter plate 17 and the second filter plate 18, a material blocking plate is provided at the outlet at the bottom end of the filter box 11, and a swing mechanism is provided inside the filter box 11 and at the bottom ends of the first filter plate 17 and the second filter plate 18 to increase the filtering effect of the material, and a return mechanism is provided at the output end of the collecting pipe 19 to facilitate re-crushing of the filtered material, and the first filter plate 17 and the second filter plate 18 can be reciprocated by the swing mechanism, so as to facilitate increasing the filtering effect, and the return mechanism facilitates re-transmitting the material filtered by the first filter plate 17 and the second filter plate 18 to the inside of the feed pipe 12 for re-crushing and filtering;

[0027] The crushing assembly includes a first crushing roller 13 and a second crushing roller 14, which are symmetrically arranged. The first crushing roller 13 and the second crushing roller 14 are rotatably arranged inside a mounting box 15, and the mounting box 15 is fixedly arranged at the upper end of the filter box 11. The feed inlet at the upper end of the mounting box 15 coincides with the output end of the feed pipe 12. The rotating shafts at both ends of the first crushing roller 13 and the second crushing roller 14 are rotatably arranged in the mounting holes inside the filter box 11. A driven gear and a driving gear are respectively arranged on the rotating shafts at one end of the first crushing roller 13 and the second crushing roller 14. A first driven wheel is fixedly provided on the rotating shaft, and the first driven wheel is connected to the first driving wheel on the output end of the first motor 16 through a belt. The first motor 16 is fixedly provided at the upper end of the filter box 11. When in use, when the PPDO material needs to be crushed, the material is placed inside the feed pipe 12, and then the first motor 16 is started. The output end of the first motor 16 drives the second crushing roller 14 to rotate through the first belt, and the driving gear at one end of the second crushing roller 14 is meshed and rotated with the driven gear at one end of the first crushing roller 13, so that the first crushing roller 13 and the second crushing roller 14 rotate in opposite directions, thereby crushing the material.

[0028] The swing mechanism includes a first guide block 26, the first filter plate 17 and the second filter plate 18 are symmetrically provided with a first guide block 26 at the bottom ends, and the first guide block 26 is tightly provided with a push rod at the bottom ends, and a plurality of the push rods are fixed on the mounting wheel 25, and two coaxial mounting wheels 25 are fixed on a fixed shaft, and the two fixed shafts are rotatably arranged in the mounting holes inside the filter box 11, and elastic reset plates 27 are fixedly arranged at the positions corresponding to the upper ends of the first filter plate 17 and the second filter plate 18 on the inner side of the filter box 11, and one end of the elastic reset plate 27 is tightly attached to the upper ends of the first filter plate 17 and the second filter plate 18, and one end of the two fixed shafts are respectively fixed with a second driving wheel and a second driven wheel, and the second driving wheel and the second driven wheel are connected by a second belt transmission, and one end of the fixed shaft at the bottom end of the first filter plate 17 is fixed with a third driven wheel, and the third driven wheel is connected to the third main drive wheel by a third belt. The third driving wheel is connected with the driving wheel transmission, and the third driving wheel is fixedly arranged on the rotating shaft at one end of the first crushing roller 13. When in use, when the first crushing roller 13 rotates, the rotating shaft at one end of the first crushing roller 13 drives the fixed shaft at the bottom end of the first filter plate 17 to rotate through the third belt, and the fixed shaft at the bottom end of the first filter plate 17 drives the fixed shaft at the bottom end of the second filter plate 18 to rotate synchronously through the second belt. When the two fixed shafts rotate, the four mounting wheels 25 are driven to rotate at the same time. When the push rod on the mounting wheel 25 contacts the bottom end of the first guide block 26, the push rod pushes the first filter plate 17 and the second filter plate 18 to rotate with the rotating shaft at one end of the first filter plate 17 and the second filter plate 18 as the center of the circle. When one end of the push rod is separated from the bottom end of the first guide block 26, under the action of the elastic reset plate 27, the first filter plate 17 and the second filter plate 18 quickly return to the initial position, so that the bottom ends of the first filter plate 17 and the second filter plate 18 are tightly attached to the upper end of the collection pipe 19.

[0029] One end of the push rod is rotatably provided with a roller, which is convenient for reducing the wear between one end of the push rod and one side of the first guide block 26 when in use.

[0030] The return mechanism includes a mounting tube 20, which is fixed on one side of the filter box 11. The mounting tube 20 is connected with one end of the two collecting tubes 19 respectively. A mounting shaft 21 is rotatably provided inside the mounting tube 20, and a spiral plate 22 is fixed on the mounting shaft 21. The rotating shaft at one end of the mounting shaft 21 is fixedly connected to the output end of the second motor 23. The second motor 23 is fixed on the inner side of the mounting frame. The mounting frame is fixed on the upper end of the mounting tube 20. A second fixed tube is sleeved on the output end of the mounting tube 20. The second fixed tube is connected to one end of the transmission tube 24. The other end of the transmission tube 24 is sleeved with a first fixed tube. The first fixed tube is connected to one end of the transmission tube 24. The fixed pipe connection is arranged on the feed pipe 12. When in use, after the first filter plate 17 and the second filter plate 18 filter the material, the intercepted material falls into the collecting pipe 19, and the output end of the collecting pipe 19 transmits the material to the inside of the mounting pipe 20. Then the second motor 23 is started, and the output end of the second motor 23 drives the mounting shaft 21 to rotate, and the mounting shaft 21 drives the spiral plate 22 to rotate. When the spiral plate 22 rotates, the screened material can be transmitted to one end of the mounting pipe 20. The output end of the mounting pipe 20 transmits the material to the inside of the feed pipe 12 through the transmission pipe 24, so as to be crushed and filtered again. One end of the mounting pipe 20 is provided with a material shaking component to prevent the transmission pipe 24 from being blocked.

[0031] The shaking material assembly includes a second guide block 28, which is fixed on the second fixed tube. A push rod is tightly attached to the inclined surface of the second guide block 28, and the push rod is fixed to one end of a rotating plate 29. A connecting shaft is fixed on the rotating plate 29. One end of the connecting shaft is rotatably arranged in a mounting groove at the upper end of the mounting tube 20. A torsion spring is provided at the connection between the connecting shaft and the mounting groove. A shift rod 30 is tightly attached to the other side of the rotating plate 29. Several of the shift rods 30 are fixed on the output end of the second motor 23. A reset spring 31 is fixed between the bottom end of the transmission tube 24 and the upper end of the filter box 11. A limiting column is symmetrically provided at one end of the transmission tube 24. The limiting column rotates It is arranged in the mounting hole on the inner side of the first fixed tube. When in use, when the output end of the second motor 23 rotates, the output end of the second motor 23 drives a plurality of levers 30 to rotate. When the lever 30 is in close contact with one end of the rotating plate 29, the lever 30 drives the rotating plate 29 to rotate. The rotating plate 29 rotates with the connecting shaft and the center of the circle. When the rotating plate 29 rotates, the push rod cooperates with the inclined surface of the second guide block 28 to make the transmission tube 24 rotate with the limiting column as the center of the circle. When the lever 30 is separated from the rotating plate 29, the rotating plate 29 drives the push rod to return to the initial position under the action of the torsion spring. At the same time, the transmission tube 24 returns to the initial position under the action of the reset spring 31. Through continuous swinging, the transmission tube 24 is prevented from being blocked.

[0032] Example 2

[0033] A ball bearing is provided at one end of the push rod, which is convenient for reducing the wear between the one end of the push rod and the inclined surface of the second guide block 28 when in use.

[0034] The bottom end of the filter box 11 is tilted, which makes it easy to clean the materials filtered out of the filter box 11 when in use.

[0035] The above embodiment discloses a filtration device for PPDO synthesis, wherein when the PPDO material needs to be crushed, the material is placed inside the feed pipe 12, and then the first motor 16 is started. The output end of the first motor 16 drives the second crushing roller 14 to rotate through the first belt, and the driving gear at one end of the second crushing roller 14 meshes and rotates with the driven gear at one end of the first crushing roller 13, so that the first crushing roller 13 and the second crushing roller 14 rotate in opposite directions, thereby crushing the material. At the same time, the rotating shaft at one end of the first crushing roller 13 drives the fixed shaft at the bottom end of the first filter plate 17 to rotate through the third belt, and the first filter plate 1 The fixed shaft at the bottom end of 7 drives the fixed shaft at the bottom end of the second filter plate 18 to rotate synchronously through the second belt. When the two fixed shafts rotate, the four mounting wheels 25 are driven to rotate simultaneously. When the push rod on the mounting wheel 25 contacts the bottom end of the first guide block 26, the push rod pushes the first filter plate 17 and the second filter plate 18 to rotate with the rotating shaft at one end of the first filter plate 17 and the second filter plate 18 as the center of the circle. When one end of the push rod is separated from the bottom end of the first guide block 26, under the action of the elastic reset plate 27, the first filter plate 17 and the second filter plate 18 quickly return to the initial position, so that the bottom ends of the first filter plate 17 and the second filter plate 18 are aligned with the collecting pipe The upper end of the first filter plate 17 and the second filter plate 18 are tightly attached to each other, thereby increasing the filtering effect of the first filter plate 17 and the second filter plate 18 on the material. After the first filter plate 17 and the second filter plate 18 filter the material, the intercepted material falls into the collecting pipe 19, and the output end of the collecting pipe 19 transmits the material to the inside of the mounting pipe 20, and then the second motor 23 is started, and the output end of the second motor 23 drives the mounting shaft 21 to rotate, and the mounting shaft 21 drives the spiral plate 22 to rotate. When the spiral plate 22 rotates, the screened material can be transmitted to one end of the mounting pipe 20, and the output end of the mounting pipe 20 transmits the material to the inside of the feeding pipe 12 through the transmission pipe 24, thereby The crushing and filtering are performed again, and at the same time, the output end of the second motor 23 drives a plurality of levers 30 to rotate. When the lever 30 is in close contact with one end of the rotating plate 29, the lever 30 drives the rotating plate 29 to rotate, and the rotating plate 29 rotates with the connecting shaft and the center of the circle. When the rotating plate 29 rotates, the push rod cooperates with the inclined surface of the second guide block 28 to make the transmission tube 24 rotate with the limiting column as the center of the circle. When the lever 30 is separated from the rotating plate 29, the rotating plate 29 drives the push rod to return to the initial position under the action of the torsion spring, and the transmission tube 24 returns to the initial position under the action of the reset spring 31, and the transmission tube 24 is prevented from being blocked by continuous swinging.

[0036] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A filtering device for PPDO synthesis, comprising a filter box (11), wherein the upper end of the filter box (11) is connected to a feed pipe (12), a crushing assembly for crushing PPDO block materials is provided inside the filter box (11) and at one end of the feed pipe (12), a first filter plate (17) is provided inside the filter box (11) and at the output end of the feed pipe (12), and a second filter plate (18) is provided inside the filter box (11) and below the first filter plate (17), characterized in that: One end of each of the first filter plate (17) and the second filter plate (18) is provided with a rotating shaft, and the rotating shafts on both sides of the first filter plate (17) and the second filter plate (18) are rotatably arranged in the mounting holes inside the filter box (11), and a collecting pipe (19) is fixedly arranged inside the filter box (11) and at the other ends of the first filter plate (17) and the second filter plate (18), and a material blocking plate is arranged at the discharge port at the bottom end of the filter box (11), and a swing mechanism for increasing the filtering effect of the material is arranged inside the filter box (11) and at the bottom ends of the first filter plate (17) and the second filter plate (18), and the output end of the collecting pipe (19) is connected with a return mechanism for re-crushing the filtered material.

2. A filtration device for PPDO synthesis according to claim 1, characterized in that: The crushing assembly comprises a first crushing roller (13) and a second crushing roller (14), the first crushing roller (13) and the second crushing roller (14) are symmetrically arranged, the first crushing roller (13) and the second crushing roller (14) are rotatably arranged inside a mounting box (15), the mounting box (15) is fixedly arranged at the upper end of the filter box (11), the feed port at the upper end of the mounting box (15) coincides with the output end of the feed pipe (12), the rotating shafts at both ends of the first crushing roller (13) and the second crushing roller (14) are rotatably arranged in the mounting hole inside the filter box (11), a driven gear and a driving gear are respectively arranged on the rotating shafts at one end of the first crushing roller (13) and the second crushing roller (14), a first driven wheel is fixedly arranged on the rotating shaft at one end of the second crushing roller (14), the first driven wheel is connected to the first driving wheel at the output end of the first motor (16) through a belt, and the first motor (16) is fixedly arranged at the upper end of the filter box (11).

3. A filtration device for PPDO synthesis according to claim 2, characterized in that: The swing mechanism comprises a first guide block (26), the first filter plate (17) and the second filter plate (18) are symmetrically provided with the first guide block (26) at their bottom ends, the first guide block (26) is closely provided with a push rod at its bottom end, a plurality of the push rods are fixed on a mounting wheel (25), two coaxial mounting wheels (25) are fixed on a fixed shaft, the two fixed shafts are rotatably provided in mounting holes on the inner side of the filter box (11), and the inner side of the filter box (11) corresponding to the upper ends of the first filter plate (17) and the second filter plate (18) are provided with a push rod. An elastic reset plate (27) is fixedly provided, one end of the elastic reset plate (27) is tightly attached to the upper ends of the first filter plate (17) and the second filter plate (18), one end of the two fixed shafts are respectively fixedly provided with a second driving wheel and a second driven wheel, the second driving wheel and the second driven wheel are connected by a second belt transmission, a third driven wheel is fixedly provided at one end of the fixed shaft at the bottom end of the first filter plate (17), the third driven wheel is connected by a third belt transmission to the third driving wheel, and the third driving wheel is fixedly provided on a rotating shaft at one end of the first crushing roller (13).

4. A filtration device for PPDO synthesis according to claim 3, characterized in that: One end of the push rod is rotatably provided with a roller.

5. A filtration device for PPDO synthesis according to claim 1, characterized in that: The return mechanism comprises a mounting tube (20), wherein the mounting tube (20) is fixedly arranged on one side of the filter box (11), the mounting tube (20) is respectively connected with one end of the two collecting tubes (19), a mounting shaft (21) is rotatably arranged inside the mounting tube (20), a spiral plate (22) is fixedly arranged on the mounting shaft (21), one end of the rotating shaft of the mounting shaft (21) is fixedly connected with the output end of the second motor (23), the second motor (23) is fixedly arranged on the inner side of the mounting frame, the mounting frame is fixedly arranged on the upper end of the mounting tube (20), a second fixed tube is sleeved on the output end of the mounting tube (20), the second fixed tube is connected with one end of the transmission tube (24), the other end of the transmission tube (24) is sleeved with a first fixed tube, the first fixed tube is connected with the feed tube (12), and one end of the mounting tube (20) is provided with a shaking component for preventing the transmission tube (24) from being blocked.

6. A filtration device for PPDO synthesis according to claim 5, characterized in that: The shaking material assembly comprises a second guide block (28), the second guide block (28) is fixed on the second fixed tube, a push rod is tightly arranged at the inclined surface of the second guide block (28), the push rod is fixed at one end of a rotating plate (29), a connecting shaft is fixed on the rotating plate (29), one end of the connecting shaft is rotatably arranged in a mounting groove at the upper end of the mounting tube (20), a torsion spring is arranged at the connection between the connecting shaft and the mounting groove, a shifting rod (30) is tightly arranged at the other side of the rotating plate (29), a plurality of the shifting rods (30) are fixed on the output end of the second motor (23), a reset spring (31) is fixed between the bottom end of the transmission tube (24) and the upper end of the filter box (11), and a limiting column is symmetrically arranged at one end of the transmission tube (24), and the limiting column is rotatably arranged in the mounting hole inside the first fixed tube.

7. A filtration device for PPDO synthesis according to claim 6, characterized in that: A ball is arranged at one end of the push rod.

8. The filtration device for PPDO synthesis according to claim 1, characterized in that: The bottom end of the filter box (11) is arranged at an inclined position.

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