Screening device for preparing salazosulfapyridine

Abstract

The screening device comprises a base and a vibrating machine fixedly arranged at the upper end of the base, a screening assembly used for screening salazosulfapyridine is arranged at the upper end of the vibrating machine, a separating and grinding mechanism is arranged at the upper end of the base, and the separating and grinding mechanism comprises a fixing ring arranged on the outer side of the base. According to the sulfasalazine separation and grinding device, sulfasalazine clotted powder is ground through an upper grinding rod in the separation and grinding mechanism, and then insufficient screening caused by sulfasalazine clotted powder is prevented; the screening efficiency of the screening device can be greatly improved, the bottom of a screening plate in the screening assembly is cleaned through a bottom scraping plate, and then salazosulfapyridine powder is prevented from blocking holes of the screening plate.

Description

Technical Field

[0001] The utility model relates to the field of screening devices, in particular to a screening device for preparing sulfasalazine. Background Art

[0002] The traditional production of sulfasalazine is through the following processes: crushing, which is mainly the process of using mechanical force to make solid materials into fine powder; screening, which is the process of separating mixed materials of different particle sizes according to their particle sizes; mixing, which is the process of uniformly mixing two or more components; and granulation, which is the process of processing materials in the state of powder, melt, aqueous solution, etc. into granules of certain shape and size.

[0003] In the screening of sulfasalazine, most of the screening methods use vibrating rectangular screening to screen the powdered sulfasalazine raw materials. However, in practice, due to the influence of humidity, the powder will produce agglomerates. Through the Poisson coefficient, the physical quantity of the relationship between the longitudinal strain and the transverse strain of the powdered material during screening is known. More specifically, it is the ratio of the longitudinal strain of the material to the transverse strain of the material. This coefficient reflects the degree of transverse expansion and contraction of the material when the material is loaded along the longitudinal direction. When the material is subjected to tension, the longitudinal strain increases and the transverse strain decreases, causing the powder particles to be subjected to force on each other and merge into large particles, resulting in unsatisfactory screening effect.

[0004] Therefore, it is necessary to propose a new screening device for preparing sulfasalazine to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a screening device for preparing sulfasalazine, so as to solve the problem that the powdered sulfasalazine raw material is screened in the above-mentioned background technology, but in practice, due to humidity, the powder will produce agglomerates, and when the powdered material is screened, the ratio of the longitudinal strain of the material to the transverse strain of the material, the degree of transverse expansion and contraction of the material when the material is loaded in the longitudinal direction, and when the material is subjected to tension, the longitudinal strain increases and the transverse strain decreases, resulting in the powder particles being subjected to force on each other, and the screening effect is not ideal.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a screening device for preparing sulfasalazine, comprising a base and a vibrator fixedly arranged on the upper end of the base, the upper end of the vibrator is provided with a screening assembly for screening sulfasalazine, and the upper end of the base is provided with a separation and crushing mechanism;

[0007] The separation and crushing mechanism includes a fixed ring arranged on the outside of the base, a connecting rod is fixedly provided on the upper end of the fixed ring, a driving motor is fixedly provided on the upper end of the connecting rod, a rotating shaft is fixedly provided on the output end of the driving motor, an upper rolling rod is fixedly provided on the outside of the rotating shaft, a bottom scraper is fixedly provided on the outside of the rotating shaft, the upper rolling rod and the bottom scraper are staggered, a vertical plate is fixedly provided at one end of the upper rolling rod, a horizontal plate is fixedly provided at one end of the upper rolling rod, the upper rolling rod and the bottom scraper are inclined, and the horizontal plate and the vertical plate are staggered.

[0008] Preferably, the screening assembly includes a power shell fixedly arranged on the upper end of the vibration machine, a bottom collecting box is clamped on the upper end of the power shell, an upper screening box is clamped on the upper end of the bottom collecting box, and a top cover is clamped on the upper end of the upper screening box.

[0009] Preferably, a screening plate is fixedly provided on the inner side of the upper screening box, a feed funnel is fixedly provided on the inner side of the top cover, conical baffles are provided on the inner sides of the bottom collecting box and the upper screening box, the screening plate is arranged in a conical shape, a plurality of bulk material plates are provided on the inner side of the feed funnel, and a discharge nozzle is fixedly provided on one end of the upper screening box.

[0010] Preferably, circular holes for the rotation shaft to pass through are opened in the middle of the bottom collecting box and the upper screening box, and the bulk material plates are evenly fixedly connected to the outer side of the rotation shaft.

[0011] Preferably, bristles are provided on the corresponding ends of the upper rolling rod and the bottom scraper.

[0012] Preferably, the upper rolling rod, the bottom scraper plate and the screening plate are arranged in parallel.

[0013] The beneficial technical effect of the utility model is that the agglomerated powder of sulfasalazine is crushed by the upper grinding rod in the separation grinding mechanism, thereby preventing insufficient screening caused by agglomeration of sulfasalazine, which can greatly improve its screening efficiency, and the bottom of the screening plate in the screening assembly is cleaned by the bottom scraper, thereby preventing the sulfasalazine powder from clogging the holes of the screening plate, and rotating with the rotating shaft. The height of the discharge nozzle can be set, and when the upper grinding rod rotates, the vertical plate and the horizontal plate can be used to accumulate the particles that cannot be screened, and then when the particles reach a certain height, they can be discharged from the discharge nozzle, reducing the number of manual interventions.

[0014] The sulfasalazine just put in is preliminarily dispersed by the bulk plate in the screening component, and double dispersion is performed by cooperating with the separation and crushing mechanism to improve its dispersion efficiency. In addition, the circular hole between the bottom collecting box and the upper screening box can prevent the vibration of the vibrator from interfering with the driving motor. The conical baffle can block the sulfasalazine to prevent it from entering the circular hole, and the structure is reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of the structure of a screening device for preparing sulfasalazine.

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the screening component of the utility model.

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the upper screening box of the utility model.

[0018] Figure 4 It is a schematic diagram of the structure of the upper rolling rod of the utility model.

[0019] In the figure: 1. base; 2. vibrator; 3. screening assembly; 301. bottom collecting box; 302. upper screening box; 303. screening plate; 304. top cover; 305. feed hopper; 306. bulk material plate; 307. conical baffle; 308. power shell; 4. separation and crushing mechanism; 401. fixing ring; 402. connecting rod; 403. driving motor; 404. rotating shaft; 405. upper grinding rod; 406. vertical plate; 407. horizontal plate; 408. bottom scraper; 409. discharge nozzle. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in 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 in 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] like Figure 1 - Figure 4 As shown, the utility model provides a screening device for preparing sulfasalazine, comprising a base 1 and a vibrator 2 fixedly arranged on the upper end of the base 1, a screening component 3 for screening sulfasalazine is provided on the upper end of the vibrator 2, and a separation and crushing mechanism 4 is provided on the upper end of the base 1, wherein the vibrator 2 is a vibration motor.

[0022] The separation and crushing mechanism 4 includes a fixed ring 401 arranged on the outside of the base 1, a connecting rod 402 is fixedly provided on the upper end of the fixed ring 401, a driving motor 403 is fixedly provided on the upper end of the connecting rod 402, the driving motor 403 is a reduction motor to prevent the rotating shaft 404 from rotating too high, a rotating shaft 404 is fixedly provided on the output end of the driving motor 403, an upper rolling rod 405 is fixedly provided on the outside of the rotating shaft 404, a bottom scraper 408 is fixedly provided on the outside of the rotating shaft 404, the upper rolling rod 405 and the bottom scraper 408 are staggered to prevent the upper rolling rod 405 and the bottom scraper 408 from overlapping and interfering with each other, a vertical plate 406 is fixedly provided at one end of the upper rolling rod 405, a horizontal plate 407 is fixedly provided at one end of the upper rolling rod 405, the upper rolling rod 405 and the bottom scraper 408 are inclined, and the horizontal plate 407 and the vertical plate 406 are staggered to form an L-shaped arrangement.

[0023] In the embodiment of the utility model, the screening assembly 3 includes a power shell 308 fixedly arranged on the upper end of the vibrating machine 2, the upper end of the power shell 308 is clamped with a bottom collecting box 301, the upper end of the bottom collecting box 301 is clamped with an upper screening box 302, and the upper end of the upper screening box 302 is clamped with a top cover 304. The clamping method is as follows Figure 2 The enlarged area shows the common pipe sleeve type clamping connection, which will not be described in detail.

[0024] In the embodiment of the utility model, a screening plate 303 is fixedly provided on the inner side of the upper screening box 302, a feed funnel 305 is fixedly provided on the inner side of the top cover 304, conical baffles 307 are provided on the inner sides of the bottom collecting box 301 and the upper screening box 302, the screening plate 303 is arranged in a conical shape, which is convenient for screening sulfasalazine, a plurality of bulk plates 306 are provided on the inner side of the feed funnel 305, and a discharge nozzle 409 is fixedly provided at one end of the upper screening box 302, which is convenient for discharging the intercepted screened objects.

[0025] In the embodiment of the utility model, a circular hole for the rotating shaft 404 to pass through is opened in the middle of the bottom collecting box 301 and the upper screening box 302 to facilitate the passing of the rotating shaft 404, and a plurality of bulk plates 306 are evenly distributed and fixedly connected to the outer side of the rotating shaft 404.

[0026] In the embodiment of the utility model, the upper rolling rod 405 and the corresponding end of the bottom scraper 408 are both provided with bristles to facilitate cleaning of the screening plate 303.

[0027] In the embodiment of the utility model, the upper rolling rod 405, the bottom scraper plate 408 and the screening plate 303 are arranged in parallel to ensure that they are in contact with each other.

[0028] Working principle: The operator turns on the vibrator 2 and the driving motor 403 in the separation and crushing mechanism 4, and then puts the sulfasalazine into the upper screening box 302 through the feeding funnel 305 in the screening component 3. The vibrator 2 vibrates the power shell 308, the bottom collecting box 301, and the upper screening plate 303 to vibrate and screen the sulfasalazine. Further, the driving motor 403 drives the rotating shaft 404 to rotate, and then the rotating shaft 404 drives the bulk material plate 306 to rotate. The sulfasalazine is impacted by the bulk material plate 306 to make it evenly dispersed and preliminarily broken up to prevent agglomeration. Then, the rotating shaft 404 drives the upper rolling rod 405 to The sulfasalazine on the screening plate 303 is rolled and broken up for the second time, and the bottom of the screening plate 303 is cleaned by the bottom scraper 408 to prevent the sulfasalazine from adhering to the bottom of the screening plate 303 and causing the screening holes to be blocked, so that the sulfasalazine is in two sizes inside the bottom collecting box 301 and the upper screening box 302. The upper rolling rod 405 rotates continuously, so that the vertical plate 406 and the horizontal plate 407 rotate, and the materials that cannot be screened in the inner corners of the upper screening box 302 are accumulated. When the accumulation height reaches the discharge nozzle 409, they are discharged from the discharge nozzle 409, thereby reducing the number of manual cleaning times.

Claims

1. A screening device for preparing sulfasalazine, comprising a base (1) and a vibrator (2) fixedly arranged on the upper end of the base (1), characterized in that: The upper end of the vibrating machine (2) is provided with a screening component (3) for screening sulfasalazine, and the upper end of the base (1) is provided with a separation and crushing mechanism (4); The separation and crushing mechanism (4) comprises a fixing ring (401) arranged on the outside of the base (1); a connecting rod (402) is fixedly provided on the upper end of the fixing ring (401); a driving motor (403) is fixedly provided on the upper end of the connecting rod (402); a rotating shaft (404) is fixedly provided on the output end of the driving motor (403); an upper rolling rod (405) is fixedly provided on the outside of the rotating shaft (404); a bottom scraper (408) is fixedly provided on the outside of the rotating shaft (404); the upper rolling rod (405) and the bottom scraper (408) are staggered; a vertical plate (406) is fixedly provided on one end of the upper rolling rod (405); a horizontal plate (407) is fixedly provided on one end of the upper rolling rod (405); the upper rolling rod (405) and the bottom scraper (408) are inclinedly provided; and the horizontal plate (407) and the vertical plate (406) are staggered.

2. The screening device for preparing sulfasalazine according to claim 1, characterized in that: The screening assembly (3) comprises a power shell (308) fixedly arranged at the upper end of the vibrating machine (2); a bottom collecting box (301) is clamped on the upper end of the power shell (308); an upper screening box (302) is clamped on the upper end of the bottom collecting box (301); and a top cover (304) is clamped on the upper end of the upper screening box (302).

3. The screening device for preparing sulfasalazine according to claim 2, characterized in that: A screening plate (303) is fixedly provided on the inner side of the upper screening box (302), a feeding funnel (305) is fixedly provided on the inner side of the top cover (304), a conical baffle (307) is provided on the inner sides of the bottom collecting box (301) and the upper screening box (302), the screening plate (303) is arranged in a conical shape, a plurality of bulk material plates (306) are provided on the inner side of the feeding funnel (305), and a discharge nozzle (409) is fixedly provided on one end of the upper screening box (302).

4. The screening device for preparing sulfasalazine according to claim 3, characterized in that: The bottom collecting box (301) and the upper screening box (302) are provided with circular holes in the middle for the rotating shaft (404) to pass through, and the bulk material plates (306) are evenly distributed and fixedly connected to the outside of the rotating shaft (404).

5. The screening device for preparing sulfasalazine according to claim 1, characterized in that: The upper rolling rod (405) and the bottom scraper (408) are both provided with bristles at the corresponding ends.

6. The screening device for preparing sulfasalazine according to claim 3, characterized in that: The upper rolling rod (405), the bottom scraper (408) and the screening plate (303) are arranged in parallel.

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