Special throwing filter for praziquantel intermediate

Abstract

The utility model relates to the technical field of praziquantel preparation, and provides a special throwing filter for a praziquantel intermediate, which comprises a treatment box, the treatment box is provided with a columnar groove, the inner wall of the columnar groove is fixedly connected with a filter plate, the top end of the filter plate is provided with a groove, the inner part of the groove is fixedly connected with a rough filter screen, and the rough filter screen is fixedly connected with a fine filter screen. The bottom end of the filter plate is fixedly connected with a bottom shell, the interior of the bottom shell is fixedly connected with a first servo motor, the output end of the first servo motor is rotationally connected with the filter plate and is fixedly connected with a connecting ring, and the outer end of the connecting ring is fixedly connected with a scraping rod; according to the praziquantel intermediate recycling device, the rotating connecting ring drives the scraper at the outer end to clean praziquantel intermediates attached to the outer end of the coarse filtering net, so that praziquantel intermediate crystals are stripped from the surface of the coarse filtering net, the praziquantel intermediate crystals are conveniently collected, and the recycling yield of the praziquantel intermediate crystals is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of praziquantel preparation, and specifically relates to a special rejection filter for praziquantel intermediates. Background Art

[0002] Praziquantel is an organic compound and an anthelmintic for humans and animals. It is specifically used to treat tapeworms and flukes. It is particularly effective against schistosoma japonicum, Chinese liver fluke, and Diphyllobothrium luxuriatum. In the preparation process of praziquantel, the generated praziquantel intermediate needs to be filtered out. The purpose of filtering out is to discharge the water contained in the praziquantel intermediate, so as to obtain relatively pure praziquantel crystals. The filtering out method of praziquantel is to utilize its insoluble property in water.

[0003] In a special filter rejection device for praziquantel intermediate disclosed in Chinese patent CN218458833U, it is proposed that the praziquantel intermediate is rejected by a rotary centrifugal method, and a collecting bucket is provided at the periphery of the rejection filter bucket to collect the praziquantel intermediate thrown out from the small hole of the rejection filter bucket, and then the praziquantel intermediate is filtered and recovered at the bottom of the collecting bucket, which has the characteristics of rapid separation of praziquantel intermediate and water, and can maximize the acquisition of praziquantel intermediate and improve the product acquisition rate. However, after the rejected praziquantel intermediate is filtered through the coarse filter, the praziquantel intermediate will adhere to the outer end of the coarse filter and is not easy to separate, thereby affecting the recovery of the praziquantel intermediate. For this reason, a special filter rejection device for praziquantel intermediate is proposed, and the coarse filter screen at the outer end of the filter plate is cleaned by a scraper to solve the above problems. Utility Model Content

[0004] The utility model provides a special filter rejection device for praziquantel intermediates, which solves the problem that praziquantel attached to the outer end of a coarse filtration screen is difficult to clean.

[0005] The technical solution of the utility model is as follows:

[0006] A filter rejection device dedicated to a praziquantel intermediate comprises a treatment box, wherein the treatment box is provided with a columnar groove, a filter plate is fixedly connected to the inner wall of the columnar groove, a groove is opened at the top of the filter plate, a coarse filter screen is fixedly connected inside the groove, the bottom end of the filter plate is fixedly connected to a bottom shell, a first servo motor is fixedly connected inside the bottom shell, an output end of the first servo motor is rotatably connected to the filter plate and fixedly connected to a connecting ring, and a scraper rod is fixedly connected to the outer end of the connecting ring.

[0007] Preferably, three grooves are provided and arranged in a circular shape and equidistantly at the top of the filter plate. The filter plate is truncated cone-shaped and hollow inside. A filter cotton layer is fixedly connected to the bottom end of the filter plate, and the filter cotton layer corresponds to the position of the grooves.

[0008] Preferably, discharge troughs are symmetrically provided on both sides of the processing box, the discharge troughs are inclined, and discharge pipes are symmetrically fixedly connected to both sides of the processing box, the positions of the discharge pipes correspond to the discharge troughs, and the discharge pipes are inclined.

[0009] Preferably, a waste water tank is clamped at the bottom end of the treatment box, the waste water tank is in communication with the treatment box, and a water outlet pipe is fixedly connected to the bottom end of one side of the waste water tank.

[0010] Preferably, an annular groove is provided inside the processing box, a gear ring is rotatably connected inside the annular groove, an outer cylinder is fixedly connected to the inner wall of the gear ring, the outer cylinder is rotatably connected to the inside of the processing box, a cavity clamp is fixedly connected to one side of the processing box, a gear is rotatably connected inside the cavity clamp, the gear is meshed with the gear ring, a slot is provided at the outer end of the processing box, a second servo motor is fixedly connected inside the slot, the output end of the second servo motor is fixedly connected to the gear, and the inner cylinder is clamped inside the outer cylinder.

[0011] Preferably, the top of the processing box is rotatably connected to a cover plate, the top center position of the inner cavity of the cover plate is rotatably connected to a rotating shaft, the bottom end of the rotating shaft is fixedly connected to a clamping bucket, the clamping bucket is truncated, and the clamping bucket is clamped with the inner cylinder.

[0012] The working principle and beneficial effects of the utility model are:

[0013] 1. In the utility model, the scraper at the outer end is driven by the rotating connecting ring to clean the praziquantel intermediate attached to the outer end of the coarse filtration screen, so that the praziquantel intermediate crystals are peeled off from the surface of the coarse filtration screen, which is convenient for collecting the praziquantel intermediate crystals and improving the recovery yield of the praziquantel intermediate crystals. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the processing box of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the filter plate of the utility model;

[0018] Figure 4 It is a schematic diagram of the connection structure between the gear ring and the gear of the utility model.

[0019] In the figure: 1. treatment box; 2. filter plate; 3. coarse filter screen; 4. bottom shell; 5. first servo motor; 6. connecting ring; 7. scraper rod; 8. filter cotton layer; 9. discharge chute; 10. discharge pipe; 11. waste water tank; 12. outlet pipe; 13. outer cylinder; 14. gear ring; 15. cavity clamping plate; 16. gear; 17. second servo motor; 18. inner cylinder; 19. cover plate; 20. rotating shaft; 21. clamping bucket. DETAILED DESCRIPTION

[0020] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example 1

[0022] like Figure 1~Figure 3 As shown, a filter rejection device dedicated to praziquantel intermediates includes a processing box 1, a columnar groove is provided in the processing box 1, a filter plate 2 is fixedly connected to the inner wall of the columnar groove, a groove is provided at the top of the filter plate 2, a coarse filter screen 3 is fixedly connected inside the groove, a bottom shell 4 is fixedly connected to the bottom of the filter plate 2, a first servo motor 5 is fixedly connected inside the bottom shell 4, an output end of the first servo motor 5 is rotatably connected to the filter plate 2 and a connecting ring 6 is fixedly connected, and a scraper rod 7 is fixedly connected to the outer end of the connecting ring 6. The purpose of this arrangement is that after the water contained in the praziquantel intermediate in the processing box 1 is filtered through the filter cotton layer 8, part of the praziquantel intermediate is adsorbed in the coarse filter screen 3 at the outer end of the filter plate 2, and the rotating connecting ring 6 drives the scraper rod 7 to clean the outer end of the coarse filter screen 3, thereby peeling off the praziquantel intermediate crystals at the outer end of the coarse filter screen 3, facilitating cleaning, and improving the recovery yield of the praziquantel intermediate crystals.

[0023] Preferably, three grooves are provided and arranged in an annular shape and equidistantly at the top of the filter plate 2, the filter plate 2 is truncated cone-shaped and hollow inside, and a filter cotton layer 8 is fixedly connected to the bottom end of the filter plate 2, and the filter cotton layer 8 corresponds to the position of the groove. The purpose of this arrangement is that the filter cotton layer 8 can separate the praziquantel intermediate crystals from water.

[0024] In this embodiment, after the prepared praziquantel intermediate mixture is filtered, part of the praziquantel intermediate crystals are thrown out together with water. At this time, the mixture falls on the filter plate 2 inside the treatment box 1, and the filter cotton layer 8 filters the water. The praziquantel intermediate crystals are attached to the outer end of the coarse filtration screen 3. At this time, the first servo motor 5 drives the scraper rod 7 at the outer end of the connecting ring 6 to rotate, so that the praziquantel intermediate crystals at the outer end of the coarse filtration screen 3 are peeled off, which is convenient for cleaning the coarse filtration screen 3 while increasing the yield of praziquantel intermediate crystal recovery.

[0025] Example 2

[0026] like Figure 1~Figure 4 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment further proposes that the processing box 1 is symmetrically provided with a discharge trough 9 on both sides, the discharge trough 9 is inclined, and the processing box 1 is symmetrically fixedly connected with a discharge pipe 10 on both sides, the discharge pipe 10 corresponds to the position of the discharge trough 9, and the discharge pipe 10 is inclined. The purpose of this arrangement is that the inclined discharge trough 9 and the discharge pipe 10 are convenient for discharging the praziquantel intermediate crystals cleaned by the scraper 7.

[0027] Preferably, a wastewater tank 11 is clamped at the bottom of the treatment box 1, the wastewater tank 11 is in communication with the treatment box 1, and a water outlet pipe 12 is fixedly connected to the bottom of one side of the wastewater tank 11. The purpose of this arrangement is that the wastewater tank 11 can collect the water separated from the praziquantel intermediate crystals, and the wastewater tank 11 is detachable, so as to facilitate the regular replacement of the filter cotton layer 8.

[0028] Preferably, an annular groove is provided inside the processing box 1, a gear ring 14 is rotatably connected inside the annular groove, an outer cylinder 13 is fixedly connected to the inner wall of the gear ring 14, the outer cylinder 13 is rotatably connected to the inside of the processing box 1, a cavity card plate 15 is fixedly connected to one side of the processing box 1, a gear 16 is rotatably connected inside the cavity card plate 15, the gear 16 is meshed with the gear ring 14, a card slot is provided at the outer end of the processing box 1, a second servo motor 17 is fixedly connected inside the card slot, an output end of the second servo motor 17 is fixedly connected to the gear 16, and an inner cylinder 18 is clamped inside the outer cylinder 13. The purpose of this arrangement is that the gear 16 can drive the outer cylinder 13 connected to the gear ring 14 to rotate inside the processing box 1, thereby preliminarily separating the water in the praziquantel intermediate.

[0029] Preferably, the top of the treatment box 1 is rotatably connected with a cover plate 19, the center position of the top of the inner cavity of the cover plate 19 is rotatably connected with a rotating shaft 20, and the bottom end of the rotating shaft 20 is fixedly connected with a clamping bucket 21, which is truncated and clamped with the inner cylinder 18. The purpose of this arrangement is that the provided clamping bucket 21 is used to fix the inner cylinder 18 inside the outer cylinder 13, to prevent the inner cylinder 18 from separating from the outer cylinder 13 during the rotation of the outer cylinder 13, and to prevent the inner cylinder 18 from stagnating, thereby affecting the effect of the praziquantel intermediate rejection filtration.

[0030] In this embodiment, the prepared praziquantel intermediate is poured into the inner cylinder 18, and the cover 19 is closed. At this time, the bucket 21 at the bottom end of the rotating shaft 20 is clamped on the top of the inner cylinder 18, thereby fixing the inner cylinder 18 inside the outer cylinder 13 to prevent the inner cylinder 18 from idling, thereby affecting the water removal effect of the praziquantel intermediate. In the process of removing and filtering the praziquantel intermediate, the second servo motor 17 drives the gear 16 to rotate, and the rotating gear 16 drives the outer cylinder 13 on the inner wall of the gear ring 14 to rotate, and the inner cylinder 18 rotates together with the outer cylinder 13, thereby drying the water contained in the praziquantel intermediate.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A filter rejection device for praziquantel intermediates, comprising a treatment box (1), characterized in that: The processing box (1) is provided with a columnar groove, the inner wall of the columnar groove is fixedly connected to a filter plate (2), the top of the filter plate (2) is provided with a groove, the interior of the groove is fixedly connected to a coarse filter screen (3), the bottom end of the filter plate (2) is fixedly connected to a bottom shell (4), the interior of the bottom shell (4) is fixedly connected to a first servo motor (5), the output end of the first servo motor (5) is rotatably connected to the filter plate (2) and is fixedly connected to a connecting ring (6), and the outer end of the connecting ring (6) is fixedly connected to a scraper rod (7).

2. A filter for rejecting a praziquantel intermediate according to claim 1, characterized in that: Three grooves are provided in an annular shape and are equidistantly arranged at the top of the filter plate (2); the filter plate (2) is truncated cone-shaped and hollow inside; a filter cotton layer (8) is fixedly connected to the bottom end of the filter plate (2); the filter cotton layer (8) corresponds to the position of the grooves.

3. A filter-rejection device for a praziquantel intermediate according to claim 1, characterized in that: Discharge troughs (9) are symmetrically provided on both sides of the processing box (1), and the discharge troughs (9) are inclined. Discharge pipes (10) are symmetrically fixedly connected to both sides of the processing box (1), and the positions of the discharge pipes (10) and the discharge troughs (9) correspond to each other, and the discharge pipes (10) are inclined.

4. A filter for rejecting a praziquantel intermediate according to claim 1, characterized in that: A waste water tank (11) is clamped at the bottom end of the treatment box (1), the waste water tank (11) is in communication with the treatment box (1), and a water outlet pipe (12) is fixedly connected to the bottom end of one side of the waste water tank (11).

5. A filter-rejection device for a praziquantel intermediate according to claim 1, characterized in that: The processing box (1) is provided with an annular groove inside, a gear ring (14) is rotatably connected inside the annular groove, an outer cylinder (13) is fixedly connected to the inner wall of the gear ring (14), the outer cylinder (13) is rotatably connected to the inside of the processing box (1), a cavity clamp (15) is fixedly connected to one side of the processing box (1), a gear (16) is rotatably connected inside the cavity clamp (15), the gear (16) is meshed with the gear ring (14), a clamping groove is provided at the outer end of the processing box (1), a second servo motor (17) is fixedly connected inside the clamping groove, an output end of the second servo motor (17) is fixedly connected to the gear (16), and an inner cylinder (18) is clamped inside the outer cylinder (13).

6. A filter-rejector for a praziquantel intermediate according to claim 5, characterized in that: The top of the processing box (1) is rotatably connected to a cover plate (19), the center position of the top of the inner cavity of the cover plate (19) is rotatably connected to a rotating shaft (20), the bottom end of the rotating shaft (20) is fixedly connected to a clamping bucket (21), the clamping bucket (21) is in a truncated cone shape, and the clamping bucket (21) is clamped to the inner cylinder (18).

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