Screening and grinding equipment for producing and processing medical intermediates

Abstract

The invention belongs to the field of crushing and screening devices, and discloses screening and grinding equipment for medical intermediate production and processing, the screening and grinding equipment comprises a shell, the top of the shell is fixedly connected with a first connecting rod, and the end, away from the shell, of the first connecting rod is fixedly connected with an adjustable grinding mechanism; the adjustable grinding mechanism comprises an upper shell, a first corrugated roller grinding device is rotationally connected to the position, close to the top end, in the upper shell, a second corrugated roller grinding device is fixedly connected to the middle position in the upper shell, and a third corrugated roller grinding device is fixedly connected to the position, close to the shell, in the upper shell. A bottom plate adjusting device is fixedly connected to the interior of the upper shell. The materials are ground by the three grinding devices with different parameters through the adjustable grinding mechanism, so that the materials are gradually transited from coarse grinding to fine grinding; the previous grinding device is used for carrying out primary coarse grinding, and large-particle materials are crushed into medium-particle materials;

Description

Technical Field

[0001] The invention relates to the technical field of crushing and screening devices, in particular to a screening and grinding device for producing and processing pharmaceutical intermediates. Background Art

[0002] As people pay more attention to health and medical standards improve, the requirements for drug quality are getting higher and higher. Pharmaceutical intermediates are key raw materials for drug production, and their quality directly affects the efficacy and safety of drugs. Screening and grinding equipment can perform fine processing on pharmaceutical intermediates to ensure uniform particle size distribution and low impurity content, thereby improving the quality and stability of drugs.

[0003] The patent application with application number CN201922245187.2 discloses a crushing and screening device for pharmaceutical intermediates, including a crushing box and a bottom plate, the upper end of the crushing box is fixedly connected to a feed port, an upper cover is sleeved on the outer side of the upper end of the feed port, symmetrically arranged crushing rollers are rotatably connected in the crushing box, and a first motor is fixedly connected to the right end of the crushing box.

[0004] The current crushing and screening device used for pharmaceutical intermediates has improved the quality and efficiency of raw material screening and can avoid raw materials clogging the screen to a certain extent. However, the device has shortcomings in the treatment of unqualified raw materials screened out, the grinding of raw materials and the scope of application of the device. In view of this, the test device is improved. Summary of the invention

[0005] The object of the present invention is to provide a sieving and grinding device for the production and processing of pharmaceutical intermediates to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: A sieving and grinding device for producing and processing pharmaceutical intermediates, comprising a housing, a first connecting rod is fixedly connected to the top of the housing, and an adjustable grinding mechanism is fixedly connected to one end of the first connecting rod away from the housing;

[0007] The adjustable grinding mechanism includes an upper shell, a first corrugation roller grinding device is rotatably connected to a position near the top of the upper shell, a second corrugation roller grinding device is fixedly connected to a middle position of the upper shell, a third corrugation roller grinding device is fixedly connected to a position near the outer shell of the upper shell, and a bottom plate adjustment device is fixedly connected to the upper shell.

[0008] Preferably, a rectangular groove is provided on the side of the shell, a limiting slide rod device is fixedly connected inside the shell, a vibration plate is fixedly connected to the end face of the moving rod of the limiting slide rod device, an elastic sealing device is fixedly connected inside the rectangular groove, a notch is provided on the surface of the shell, an inverted L-shaped limiting rod is movably connected inside the notch, and an irregular opening is provided on the surface of the shell.

[0009] Preferably, the upper shell is inclined at a certain angle, an opening is provided on the top of the upper shell, the spacing between the first corrugation roller grinding device, the second corrugation roller grinding device, and the third corrugation roller grinding device is consistent, the corrugated roller diameter of the first corrugation roller grinding device is the smallest, and the corrugated roller diameter of the third corrugation roller grinding device is the largest.

[0010] Preferably, the bottom plate adjustment device comprises a first bottom plate, a reinforcement plate is fixedly connected to the bottom of the first bottom plate, and a first telescopic rod is fixedly connected to the bottom of the reinforcement plate.

[0011] Preferably, the first bottom plate is inclined at a certain angle, and the inclination angle of the first bottom plate is consistent with the inclination angle of the upper shell. There are three reinforcement plates, each of which is located at the bottom of the grinding device. There are three first telescopic rods, which are respectively located at the bottom of the reinforcement plates. A detachable screening mechanism is fixedly connected to the inside of the shell.

[0012] Preferably, the detachable screening mechanism comprises a second telescopic rod, a movable rod surface of the second telescopic rod is fixedly connected with a clamping plate, a screening plate is clamped on the top of the clamping plate, and a qualified collection box is clamped on the inner side of the clamping plate.

[0013] Preferably, there are two snap-in plates, both of which are snap-in connected to the screening plate and the qualified collection box, the screening plate is inclined at a certain angle, a slot is provided on the surface of the screening plate, the screening plate is snap-in connected to the vibration plate, the top opening of the qualified collection box is inclined at a certain angle, the inclination angle of the top opening of the qualified collection box is consistent with the inclination angle of the screening plate, the top of the qualified collection box is movably connected to the bottom of the screening plate, and the front contour of the movably connected screening plate and the qualified collection box is consistent with the front contour of the irregular opening.

[0014] Preferably, a protrusion is provided on the side of the clamping plate, and the end of the clamping plate close to the second telescopic rod is fixedly connected to the second connecting rod, the end of the second connecting rod close to the second telescopic rod is fixedly connected to the limited connecting block, and the bottom of the shell is fixedly connected to the collection and transmission mechanism.

[0015] Preferably, the collection and transmission mechanism includes an unqualified recovery box, the top of the unqualified recovery box is fixedly connected to the bottom of the outer shell, the inner bottom wall of the unqualified recovery box has an inclination angle, a transmission pipe is fixedly connected to the inside of the unqualified recovery box, an airflow manufacturing device is fixedly connected to the surface of the transmission pipe, and a hollow connecting block is fixedly connected to one end of the transmission pipe away from the unqualified recovery box, the hollow connecting block is fixedly connected to the upper shell, and the hollow connecting block is located above the top opening of the upper shell.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The sieving grinding equipment for the production and processing of pharmaceutical intermediates uses an adjustable grinding mechanism to grind the material with three grinding devices with different parameters, so that the material can gradually transition from coarse grinding to fine grinding; the first grinding device performs preliminary coarse grinding to break large particles into medium particles, and the subsequent device performs finer grinding on this basis, so that the material particle size gradually decreases and finally reaches the ideal fineness. This gradient grinding method can effectively improve the grinding efficiency and effect.

[0018] 2. The sieving grinding equipment for the production and processing of pharmaceutical intermediates uses an adjustable grinding mechanism to enable three grinding devices with different parameters to relay grind the material. Through this relay grinding, the material is subjected to grinding effects of different angles, strengths and methods in different devices. The former device may mainly grind the material in certain directions, while the latter device can further grind the material from other directions, so that all parts of the material can be ground more fully and evenly, avoiding local over- or under-grinding and improving the overall grinding uniformity of the material.

[0019] 3. The sieving grinding equipment for the production and processing of pharmaceutical intermediates can adjust the distance between the bottom plate and the grinding device through an adjustable grinding mechanism. By adjusting the distance between the bottom plate and the grinding device, the size of the ground particles can be adjusted within a certain range, thereby improving the application range of the device.

[0020] 4. The sieving and grinding equipment for the production and processing of pharmaceutical intermediates makes it easy to install and disassemble the screening plate through a detachable screening mechanism. The easily detachable screening plate allows the screening plate to be installed according to the screening requirements during use of the device, thereby improving the scope of application of the device.

[0021] 5. The sieving and grinding equipment for the production and processing of pharmaceutical intermediates generates airflow through a collecting and transmitting device. The airflow drives unqualified raw materials to move inside the ventilation pipe. The airflow moving along the ventilation pipe drives the unqualified raw materials to enter the adjustable grinding mechanism again, and the unqualified raw materials are ground twice, thereby avoiding waste of raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the housing of the present invention;

[0024] Figure 3 For the present invention Figure 2 A is an enlarged schematic diagram;

[0025] Figure 4 is a cross-sectional view of the housing of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the adjustable grinding mechanism of the shell of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the housing bottom plate adjusting device of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the detachable screening mechanism of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the clamping plate of the present invention;

[0030] Fig. 9 It is a schematic diagram of the structure of the collection and transmission mechanism of the present invention.

[0031] In the figure: 1, housing; 101, rectangular groove; 102, limit slide rod device; 103, vibration plate; 104, elastic sealing device; 105, notch; 106, inverted L-shaped limit rod; 107, irregular opening; 2, first connecting rod; 3, adjustable grinding mechanism; 301, upper housing; 302, first corrugation roller grinding device; 303, second corrugation roller grinding device; 304, third corrugation roller grinding device; 305, bottom plate Adjusting device; 3051, first bottom plate; 3052, reinforcement plate; 3053, first telescopic rod; 4, detachable screening mechanism; 401, second telescopic rod; 402, snap-in plate; 4021, second connecting rod; 4022, limit connecting block; 403, screening plate; 404, qualified collection box; 5, collection and transmission mechanism; 501, unqualified recovery box; 502, transmission pipe; 503, airflow manufacturing device; 504, hollow connecting block. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] For example, see Figure 1-Figure 6The present invention provides a technical solution: a sieving and grinding device for the production and processing of pharmaceutical intermediates, comprising a shell 1, a rectangular groove 101 is opened on the side of the shell 1, the rectangular groove 101 is used to provide sufficient moving space for the clamping plate 402 while limiting the moving range of the clamping plate 402, a limited sliding rod device 102 is fixedly connected inside the shell 1, the limited sliding rod device 102 is used to provide support for the vibration plate 103 while not limiting the axial movement of the vibration plate 103, the end surface of the moving rod of the limited sliding rod device 102 is fixedly connected to the vibration plate 103, and the vibration plate 103 is used to continuously impact the adjustable grinding mechanism 3 during the reciprocating motion, while improving the grinding efficiency, to a certain extent, avoiding material blockage. The plug is an adjustable grinding mechanism 3, an elastic sealing device 104 is fixedly connected inside the rectangular groove 101, and the elastic sealing device 104 is used to prevent unqualified material particles from escaping from the rectangular groove 101 during the falling process without restricting the movement of the clamping plate 402 along the rectangular groove 101. A notch 105 is provided on the surface of the shell 1, and an inverted L-shaped limiting rod 106 is movably connected inside the notch 105. The inverted L-shaped limiting rod 106 is used to limit the movement range of the screening plate 403 and the qualified collection box 404 clamped with the clamping plate 402. An irregular opening 107 is provided on the surface of the shell 1, and a first connecting rod 2 is fixedly connected to the top of the shell 1, and an adjustable grinding mechanism 3 is fixedly connected to the end of the first connecting rod 2 away from the shell 1;The adjustable grinding mechanism 3 includes an upper shell 301, which is inclined at a certain angle. The upper shell 301 inclined at a certain angle is used to allow the material to move under the effect of gravity. An opening is opened at the top of the upper shell 301. The opening is opened at the top of the upper shell 301 for unqualified material particles entrained by the airflow to enter the adjustable grinding mechanism 3 again. A first corrugated roller grinding device 302 is rotatably connected to the top of the upper shell 301. The first corrugated roller grinding device 302 is used to perform initial grinding on the material so that the material is crushed for the first time, and the corrugated structure on the surface of the corrugated roller can generate more contact points and greater The shear force is generated, thereby shortening the grinding time and improving the grinding efficiency. A second corrugated roller grinding device 303 is fixedly connected to the middle position inside the upper shell 301. The second corrugated roller grinding device 303 is used to perform secondary grinding on the material that has been initially ground, further refining the material, making the material finer and making the material particle distribution more uniform and concentrated. A third corrugated roller grinding device 304 is fixedly connected to the position near the outer shell 1 inside the upper shell 301. The third corrugated roller grinding device 304 is used to perform a third grinding on the material. The particle size of the material has been refined after the first two grindings, but the third grinding can achieve more accurate particle size control to make the particle size more The first corrugated roller grinding device 302, the second corrugated roller grinding device 303, and the third corrugated roller grinding device 304 are close to the target value. The distances between the first corrugated roller grinding device 302, the second corrugated roller grinding device 303, and the third corrugated roller grinding device 304 are consistent. The corrugated roller diameter of the first corrugated roller grinding device 302 is the smallest, and the corrugated roller diameter of the third corrugated roller grinding device 304 is the largest. A bottom plate adjustment device 305 is fixedly connected to the interior of the upper shell 301. The bottom plate adjustment device 305 includes a first bottom plate 3051. The first bottom plate 3051 is used to cooperate with the grinding device to apply pressure to the material. The first bottom plate 3051 is inclined at a certain angle. The inclination angle of the first bottom plate 3051 is consistent with the inclination angle of the upper shell 301. The first bottom plate 3051 is inclined at a certain angle. A reinforcement plate 3052 is fixedly connected to the bottom of 051. The reinforcement plate 3052 is used to reinforce the bottom plate to prevent the first bottom plate 3051 from being damaged during the operation of the rolling device. There are three reinforcement plates 3052, each of which is located at the bottom of the grinding device. A first telescopic rod 3053 is fixedly connected to the bottom of the reinforcement plate 3052. The first telescopic rod 3053 is used to control the distance between the first bottom plate 3051 and the grinding device so that the size of the grinding particles can be adjusted according to demand. There are three first telescopic rods 3053, which are respectively located at the bottom of the reinforcement plate 3052. A detachable screening mechanism 4 is fixedly connected inside the housing 1. ;

[0034] The working principle of this embodiment is as follows: by controlling the extension and retraction of the first telescopic rod 3053, the distance between the first bottom plate 3051 and the grinding device is adjusted according to the size of the particles to be ground, and then the material is put into the adjustable grinding mechanism 3, and then the material is affected by gravity due to the inclined adjustable grinding mechanism 3, and under the influence of gravity, the material slides down along the first bottom plate 3051, and as the material slides down, the material contacts the rotating first corrugated roller grinding device 302, and under the action of friction, the material moves in the direction of rotation of the first corrugated roller grinding device 302, and in the process of movement, the material is subjected to pressure from the first corrugated roller grinding device 302, and under the combined action of this friction and pressure, the material is moved in the first corrugated roller grinding device 302. The material is continuously subjected to force under the rolling of the sub-grinding device 302, so that the shape of the material is changed. After the material passes through the rolling range of the first corrugated roller grinding device 302, the material that has been rolled once continues to move along the first bottom plate 3051, and then contacts the second corrugated roller grinding device 303, repeating the process of being ground by the first corrugated roller grinding device 302. However, since the first corrugated roller grinding device 302 has a smaller diameter than the corrugated roller of the first corrugated roller grinding device 302, the particles of the second-ground material are smaller, and then the second-ground material continues to move along the first bottom plate 3051, and then repeats the above grinding process to further reduce the material particles, and then the ground material enters the detachable screening mechanism 4 under the influence of gravity.

[0035] Example 2, based on Example 1, please refer to Figure 7-Figure 9The present invention provides a technical solution: the detachable screening mechanism 4 includes a second telescopic rod 401, the second telescopic rod 401 is used to drive the clamping plate 402 to perform axial reciprocating motion, the surface of the moving rod of the second telescopic rod 401 is fixedly connected with the clamping plate 402, the side of the clamping plate 402 is provided with a protrusion, the side of the clamping plate 402 is provided with a protrusion for clamping the unqualified recycling box 501, the end of the clamping plate 402 close to the second telescopic rod 401 is fixedly connected with a second connecting rod 4021, the second connecting rod 4021 is used to drive the clamping plate 402 to move along the rectangular groove 101, the end of the second connecting rod 4021 close to the second telescopic rod 401 is fixedly connected with a limited connection block 4022, and the limited connection block 4022 is used to connect the second The telescopic rod 401 limits the moving range of the clamping plate 402 at the same time. The bottom of the shell 1 is fixedly connected with a collecting and transmitting mechanism 5. There are two clamping plates 402. Both clamping plates 402 are clamped with the screening plate 403 and the qualified collection box 404. The top of the clamping plate 402 is clamped with the screening plate 403. The front profile of the movably connected screening plate 403 and the qualified collection box 404 is consistent with the front profile of the irregular opening 107. The screening plate 403 is tilted at a certain angle. The screening plate 403 is tilted at a certain angle to make unqualified material particles move along the screening plate 403 to complete the collection of unqualified material particles. A card slot is opened on the surface of the screening plate 403. The screening plate 403 is clamped with the vibration plate 103. The screening plate 403 and the vibration plate 1 03 is used to drive the vibration plate 103 to move while the screening plate 403 is moving. A qualified collection box 404 is clamped on the inner side of the clamping plate 402. The top opening of the qualified collection box 404 is inclined at a certain angle. The inclination angle of the top opening of the qualified collection box 404 is consistent with the inclination angle of the screening plate 403. The top of the qualified collection box 404 is movably connected to the bottom of the screening plate 403. The collecting and transmitting mechanism 5 includes an unqualified recycling box 501. The top of the unqualified recycling box 501 is fixedly connected to the bottom of the shell 1. The bottom wall of the unqualified recycling box 501 has an inclination angle. The inclination angle of the bottom wall of the unqualified recycling box 501 is used to make the unqualified material particles inside the unqualified recycling box 501 close to the transmission pipe 50 under the influence of gravity. 2. To prevent unqualified material particles from being sucked into the transmission pipe 502 by the airflow because they are far away from the transmission pipe 502, the unqualified recovery box 501 is fixedly connected with the transmission pipe 502, and the transmission pipe 502 is used to limit the flow path of the airflow. The surface of the transmission pipe 502 is fixedly connected with an airflow manufacturing device 503, and the airflow manufacturing device 503 is used to generate an airflow by creating a pressure difference to move the unqualified material inside the unqualified recovery box 501 to the inside of the hollow connecting block 504, and then enter the adjustable grinding mechanism 3 through the opening at the top of the upper shell 301 under the influence of gravity. The end of the transmission pipe 502 away from the unqualified recovery box 501 is fixedly connected with a hollow connecting block 504, and the hollow connecting block 504 is used to block the moving airflow.The material particles in the air flow collide with the inner wall of the hollow connecting block 504 under the action of inertia and then fall under the influence of gravity. The hollow connecting block 504 is fixedly connected to the upper shell 301, and the hollow connecting block 504 is located above the top opening of the upper shell 301.

[0036] The working principle of this embodiment is as follows: the ground material particles are screened by the screening plate 403, and the qualified material particles that meet the requirements enter the qualified collection box 404 through the screening plate 403 under the influence of gravity. Since the screening plate 403 has an inclined angle, the unqualified material particles that do not meet the requirements slowly slide down along the screening plate 403 under the influence of gravity. In this process, the second telescopic rod 401 is extended and retracted to drive the clamping plate 402 to perform reciprocating translational motion in the left and right directions. The clamping plate 402 performing reciprocating translational motion drives the screening plate 403 and the qualified collection box 404 to reciprocate. Since the screening plate 403 is clamped with the vibration plate 103, the reciprocating screening plate 403 drives the vibration plate 103 to reciprocate. The reciprocating vibration plate 103 continuously hits the adjustable grinding mechanism 3, causing the adjustable grinding mechanism 3 to vibrate. Due to the reciprocating motion of the screening plate 403, the screening plate 403 While increasing the separation efficiency, it also prevents the screening plate 403 from being blocked by material particles to a certain extent. As the unqualified material particles continue to slide down the screening plate 403, the unqualified material particles finally enter the unqualified recovery box 501, and then rotate through the fan blades inside the airflow generating device 503. The rotating fan blades push the air backward or in a specific direction. Therefore, when the fan blades rotate, the blades will squeeze the air, so that the air obtains a backward speed under the action of the blades, thereby forming an airflow away from the fan blades. The unqualified material particles inside the unqualified recovery box 501 are moved along the transmission pipe 502 in the flow direction of the airflow under the influence of the airflow. When the airflow flows into the hollow connecting block 504, the unqualified material particles hit the inner wall of the hollow connecting block 504, and then the unqualified material particles fall under the influence of gravity, and enter the adjustable grinding mechanism 3 through the opening on the surface of the upper shell 301, and the grinding process is repeated again.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sieving and grinding device for the production and processing of pharmaceutical intermediates, comprising a housing (1), characterized in that: A first connecting rod (2) is fixedly connected to the top of the housing (1), and an adjustable grinding mechanism (3) is fixedly connected to one end of the first connecting rod (2) away from the housing (1); The adjustable grinding mechanism (3) comprises an upper shell (301), a first corrugation roller grinding device (302) being rotatably connected to a position near the top of the upper shell (301), a second corrugation roller grinding device (303) being fixedly connected to a middle position of the upper shell (301), a third corrugation roller grinding device (304) being fixedly connected to a position near the outer shell (1) of the upper shell (301), and a bottom plate adjusting device (305) being fixedly connected to the upper shell (301).

2. The sieving and grinding equipment for producing and processing pharmaceutical intermediates according to claim 1, characterized in that: A rectangular groove (101) is provided on the side of the shell (1); a limiting slide rod device (102) is fixedly connected inside the shell (1); a vibration plate (103) is fixedly connected to the end surface of the movable rod of the limiting slide rod device (102); an elastic sealing device (104) is fixedly connected inside the rectangular groove (101); a groove (105) is provided on the surface of the shell (1); an inverted L-shaped limiting rod (106) is movably connected inside the groove (105); and an irregular opening (107) is provided on the surface of the shell (1).

3. The sieving and grinding equipment for producing and processing pharmaceutical intermediates according to claim 1, characterized in that: The upper shell (301) is inclined at a certain angle, and an opening is provided at the top of the upper shell (301); the spacings between the first corrugation roller grinding device (302), the second corrugation roller grinding device (303), and the third corrugation roller grinding device (304) are consistent; the corrugated roller diameter of the first corrugation roller grinding device (302) is the smallest, and the corrugated roller diameter of the third corrugation roller grinding device (304) is the largest.

4. The sieving and grinding equipment for producing and processing pharmaceutical intermediates according to claim 1, characterized in that: The bottom plate adjustment device (305) comprises a first bottom plate (3051), the bottom of the first bottom plate (3051) is fixedly connected to a reinforcement plate (3052), and the bottom of the reinforcement plate (3052) is fixedly connected to a first telescopic rod (3053).

5. The sieving and grinding equipment for producing and processing pharmaceutical intermediates according to claim 4, characterized in that: The first bottom plate (3051) is inclined at a certain angle, and the inclination angle of the first bottom plate (3051) is consistent with the inclination angle of the upper shell (301). There are three reinforcement plates (3052), and each reinforcement plate (3052) is located at the bottom of the grinding device. There are three first telescopic rods (3053), which are respectively located at the bottom of the reinforcement plates (3052). A detachable screening mechanism (4) is fixedly connected to the inside of the shell (1).

6. The sieving and grinding equipment for producing and processing pharmaceutical intermediates according to claim 5, characterized in that: The detachable screening mechanism (4) comprises a second telescopic rod (401), a movable rod surface of the second telescopic rod (401) is fixedly connected to a clamping plate (402), a screening plate (403) is clamped on the top of the clamping plate (402), and a qualified collection box (404) is clamped on the inner side of the clamping plate (402).

7. The sieving and grinding equipment for producing and processing pharmaceutical intermediates according to claim 6, characterized in that: There are two snap-in plates (402), both of which are snap-in connected to the screening plate (403) and the qualified collection box (404); the screening plate (403) is inclined at a certain angle; a slot is provided on the surface of the screening plate (403); the screening plate (403) is snap-in connected to the vibration plate (103); the top opening of the qualified collection box (404) is inclined at a certain angle; the inclination angle of the top opening of the qualified collection box (404) is consistent with the inclination angle of the screening plate (403); the top of the qualified collection box (404) is movably connected to the bottom of the screening plate (403); and the front contour of the movably connected screening plate (403) and the qualified collection box (404) is consistent with the front contour of the irregular opening (107).

8. The sieving and grinding equipment for producing and processing pharmaceutical intermediates according to claim 6, characterized in that: A protrusion is provided on the side of the snap-in plate (402); one end of the snap-in plate (402) close to the second telescopic rod (401) is fixedly connected to a second connecting rod (4021); one end of the second connecting rod (4021) close to the second telescopic rod (401) is fixedly connected to a limited position connecting block (4022); and the bottom of the housing (1) is fixedly connected to a collecting and transmitting mechanism (5).

9. The sieving and grinding equipment for producing and processing pharmaceutical intermediates according to claim 8, characterized in that: The collecting and transmitting mechanism (5) comprises an unqualified recovery box (501), the top of the unqualified recovery box (501) is fixedly connected to the bottom of the outer shell (1), the inner bottom wall of the unqualified recovery box (501) has an inclined angle, the inner part of the unqualified recovery box (501) is fixedly connected with a transmission pipe (502), the surface of the transmission pipe (502) is fixedly connected with an airflow manufacturing device (503), the end of the transmission pipe (502) away from the unqualified recovery box (501) is fixedly connected with a hollow connecting block (504), the hollow connecting block (504) is fixedly connected to the upper shell (301), and the hollow connecting block (504) is located above the top opening of the upper shell (301).

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