Powder screening device

Abstract

The utility model discloses a medicinal powder screening device, which relates to the technical field of screening and comprises a material receiving box, a screening tray, a power mechanism and a medicinal powder brush. The sieve tray is arranged at the top of the material receiving box and is slidably arranged along a long shaft of the material receiving box; the powder brush is arranged in the sieve tray, and a rotating rod is arranged at the top of the powder brush and rotationally arranged on the supporting frame; the power mechanism comprises a motor, a rotating disc, a push rod, four chain wheels and two chains, the first chain wheel is rotationally arranged on the base, the top of the first chain wheel is coaxially connected with the rotating disc, one end of the push rod is hinged to the eccentric position of the rotating disc, and the other end of the push rod is hinged to the end of the screening disc. The vertical rod is rotatably matched with the supporting plate, the top of the rotating rod is connected with a fourth chain wheel, and the peripheries of the third chain wheel and the fourth chain wheel are sleeved with a second chain. According to the scheme, the traditional Chinese medicine powder brush can automatically sweep and stir medicine powder, and the sieving speed of the medicine powder is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of screening, in particular to a medicine powder screening device. Background Art

[0002] When extracting the active ingredients in the medicine, the medicinal materials need to be crushed into powder, which can increase the surface area and facilitate the penetration of the solvent, thereby improving the extraction efficiency or reaction rate. After the medicinal materials are crushed into powder, the powder needs to be screened. The existing technology generally uses two ways to screen the powder, one is to move the sieve plate horizontally back and forth, and the other is to oscillate the sieve plate up and down. The problem is that in order to speed up the screening of the powder, the staff will hold the powder brush and sweep it back and forth in the sieve plate. Therefore, this plan designs a new powder screening device to solve the problem of manually operating the powder brush. Utility Model Content

[0003] In order to solve the deficiencies in the prior art, the utility model provides a medicine powder screening device, in which a medicine powder brush can automatically sweep the medicine powder horizontally without manual operation.

[0004] In order to achieve the purpose of this utility model, the following scheme is proposed:

[0005] A medicine powder screening device comprises a material receiving box, a screening plate, a power mechanism and a medicine powder brush.

[0006] The sieve plate is arranged on the top of the material receiving box and is slidably arranged along the long axis of the material receiving box;

[0007] The powder brush is arranged in the sieve plate, and a rotating rod is arranged on the top of the powder brush, and the rotating rod is rotatably arranged on the supporting frame;

[0008] The power mechanism includes a motor, a turntable, a push rod, four sprockets and two chains. The first sprocket is rotatably arranged on the base. The top of the first sprocket is coaxially connected to the turntable. One end of the push rod is hinged to the eccentric position of the turntable, and the other end is hinged to the end of the sieve plate. The output shaft on the top of the motor is connected to the second sprocket. The first chain is sleeved on the outer periphery of the first and second sprockets. The second sprocket is coaxially connected to the third sprocket through a vertical rod. The vertical rod is rotatably matched with the support plate. The top of the rotating rod is connected to the fourth sprocket, and the second chain is sleeved on the outer periphery of the third and fourth sprockets.

[0009] Furthermore, the sieve plate is of straight slot mouth type, and the powder brush is of circular shape.

[0010] Furthermore, a guide rod is provided at one end of the sieve plate away from the turntable, a limit plate is provided at the corresponding position of the material receiving box, the guide rod passes through the limit plate, a spring is provided on the outer periphery of the guide rod, and both ends of the spring are respectively connected to the limit plate and the sieve plate.

[0011] Furthermore, an extension plate is respectively provided on both sides of the sieve plate, and the extension plate is supported on the side wall of the material receiving box.

[0012] The beneficial effects of the utility model are as follows: during the reciprocating movement of the sieve plate, the powder brush can automatically sweep the powder horizontally to accelerate the sieving rate of the powder; the powder brush can also automatically rotate in the sieve plate to stir the powder; only one power source, a motor, is needed to reciprocate the sieve plate and rotate the powder brush at the same time; the structure is ingenious and the power source is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The structural diagram of the screening device is shown;

[0014] Figure 2 A front view of the screening device is shown;

[0015] Figure 3 A top view of the screening device is shown. DETAILED DESCRIPTION

[0016] like Figure 1 As shown, this embodiment provides a medicine powder screening device, including a material receiving box 2, a sieve plate 3, a power mechanism 1, and a medicine powder brush 4.

[0017] Specifically, the sieve plate 3 is arranged on the top of the material receiving box 2, and the sieve plate 3 is slidably arranged along the long axis of the material receiving box 2. The powder brush 4 is arranged in the sieve plate 3. In order to make the sieve plate 3 and the powder brush 4 more compatible, the sieve plate 3 is arranged in a straight groove shape in this embodiment, and the powder brush 4 is round. A vertical rotating rod 41 is provided on the top of the powder brush 4, and the rotating rod 41 is rotatably arranged on the support frame 42.

[0018] The power mechanism 1 is arranged outside the material receiving box 2, and is used to reciprocate the sieve plate 3 and also to rotate the powder brush 4. The specific implementation method is as follows: Figure 1 , Figure 2 As shown, the power mechanism 1 includes a motor 13, a turntable 11, a push rod 12, four sprockets and two chains. The four sprockets are respectively a first sprocket 141, a second sprocket 142, a third sprocket 143 and a fourth sprocket 144. The two chains are respectively a first chain 151 and a second chain 152. The first sprocket 141 is rotatably arranged on the top of the base 51. The top of the first sprocket 141 is coaxially connected to the center of the turntable 11. One end of the push rod 12 is hinged to the eccentric position of the turntable 11. The other end of the push rod 12 is hinged to the end of the sieve plate 3, the top output shaft of the motor 13 is connected to the second sprocket 142, the first chain 151 is sleeved on the outer periphery of the first sprocket 141 and the second sprocket 142, the second sprocket 142 is coaxially connected to the third sprocket 143 through the vertical rod 16, in order to improve stability, the vertical rod 16 is rotatably connected to the support plate 161, the top of the rotating rod 41 is coaxially connected to the fourth sprocket 144, and the second chain 152 is sleeved on the outer periphery of the third sprocket 143 and the fourth sprocket 144.

[0019] The operating principle is as follows: the motor 13 drives the second sprocket 142. On the one hand, the first chain 151 will cause the first sprocket 141 and the turntable 11 to rotate, thereby causing the sieve plate 3 to reciprocate along the long axis of the material receiving box 2, and the powder in the sieve plate 3 quickly falls into the material receiving box 2. During the reciprocating movement of the sieve plate 3, the powder brush 4 has a sweeping effect on the powder, thereby accelerating the screening rate of the powder; on the other hand, the second sprocket 142 will cause the third sprocket 143 and the fourth sprocket 144 to rotate, thereby causing the powder brush 4 to rotate. That is to say, the powder brush 4 not only has a sweeping effect, but also a stirring effect, and can also break up some agglomerated powder blocks.

[0020] In order to increase the reciprocating frequency of the sieve plate 3 , the number of teeth of the first sprocket 141 is smaller than that of the second sprocket 142 . Conversely, in order to reduce the reciprocating frequency of the sieve plate 3 , the number of teeth of the first sprocket 141 is larger than that of the second sprocket 142 .

[0021] In order to increase the rotation speed of the powder brush 4 , the number of teeth of the fourth sprocket 144 is smaller than that of the third sprocket 143 . Conversely, in order to decrease the rotation speed of the powder brush 4 , the number of teeth of the fourth sprocket 144 is larger than that of the third sprocket 143 .

[0022] In order to improve the stability of the sieve plate 3 during the reciprocating movement, the present embodiment adopts the following measures: Figure 2 , Figure 3 As shown, first, a horizontal guide rod 31 is set at one end of the sieve plate 3 away from the turntable 11, and a limit plate 21 is set at a corresponding position on the top of the material receiving box 2. The limit plate 21 is provided with a through hole, and the guide rod 31 passes through the through hole of the limit plate 21. A spring 32 is provided on the outer periphery of the guide rod 31, and the two ends of the spring 32 are respectively connected to the limit plate 21 and the sieve plate 3. During the reciprocating movement of the sieve plate 3, the guide rod 31 is used to limit the linear motion of the sieve plate 3, and the spring 32 has a buffering effect; second, an extension plate 33 is respectively provided on both sides of the sieve plate 3, and the extension plate 33 is supported on the top of the side wall of the material receiving box 2.

[0023] In summary, the screening device in this embodiment can not only screen the medicinal powder, but also a medicinal powder brush 4 is provided in the sieve plate 3. During the reciprocating movement of the sieve plate 3, the medicinal powder brush 4 has a sweeping and stirring effect on the medicinal powder, which can speed up the screening rate of the medicinal powder; the medicinal powder brush 4 in this embodiment can rotate automatically in the sieve plate 3 without manual operation; only one power source, the motor 13, is needed, which can reciprocate the sieve plate 3 and rotate the medicinal powder brush 4 at the same time. The structure is ingenious and saves power source.

[0024] The above embodiments are only used to illustrate the technical ideas and features of the utility model, and are not intended to be the only or limit the utility model. Those skilled in the art should understand that various changes or equivalent replacements made to the utility model without departing from the scope of the utility model are within the scope of protection of the utility model.

Claims

1. A drug powder screening device, characterized in that: It comprises a material receiving box (2), a sieve plate (3), a power mechanism (1), and a powder brush (4); The sieve plate (3) is arranged on the top of the material receiving box (2) and is slidably arranged along the long axis of the material receiving box (2); The powder brush (4) is arranged in the sieve plate (3), a rotating rod (41) is arranged on the top of the powder brush (4), and the rotating rod (41) is rotatably arranged on the support frame (42); The power mechanism (1) comprises a motor (13), a rotating disk (11), a push rod (12), four sprocket wheels and two chains. The first sprocket wheel (141) is rotatably arranged on a base (51). The top of the first sprocket wheel (141) is coaxially connected to the rotating disk (11). One end of the push rod (12) is hinged to an eccentric position of the rotating disk (11), and the other end is hinged to the end of the sieve plate (3). The output shaft at the top of the motor (13) is connected to the second sprocket wheel (142). The first chain (151) is sleeved on the outer peripheries of the first sprocket wheel (141) and the second sprocket wheel (142). The second sprocket wheel (142) is coaxially connected to the third sprocket wheel (143) through a vertical rod (16). The vertical rod (16) is rotatably matched with a support plate (161). The top of the rotating rod (41) is connected to the fourth sprocket wheel (144). The second chain (152) is sleeved on the outer peripheries of the third sprocket wheel (143) and the fourth sprocket wheel (144).

2. The drug powder screening device according to claim 1, characterized in that: The sieve plate (3) is a straight slot mouth type, and the powder brush (4) is circular.

3. The drug powder screening device according to claim 1, characterized in that: A guide rod (31) is provided at one end of the sieve plate (3) away from the rotating disk (11), a limit plate (21) is provided at a corresponding position of the material receiving box (2), the guide rod (31) passes through the limit plate (21), a spring (32) is provided on the outer periphery of the guide rod (31), and two ends of the spring (32) are respectively connected to the limit plate (21) and the sieve plate (3).

4. The drug powder screening device according to claim 1, characterized in that: An extension plate (33) is respectively provided on both sides of the sieve plate (3), and the extension plate (33) is supported on the side wall of the material receiving box (2).

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