Micro weightlessness scale used in pharmaceutical industry

Abstract

The utility model discloses a trace weightlessness scale used in the pharmaceutical industry, which comprises a weighing platform, a transverse stirring and conveying device is arranged on the weighing platform, a material bin is arranged on the stirring and conveying device and comprises a spherical hopper and a cylindrical hopper, the bottom of the spherical hopper is a hemispherical bottom, the upper side of the hemispherical bottom is connected with a cylinder, and the cylindrical hopper is cylindrical. The diameter of the cylinder is the same as that of the cylindrical hopper, and the cylindrical hopper is detachably mounted at the upper part of the spherical hopper; and a vertical inner side wall and a hemispherical inner bottom wall tangentially connected with the inner side wall are formed in the material bin. According to the improved design, the spherical hopper and the hemispherical bottom are adopted, so that the vertical inner side wall and the hemispherical inner bottom wall tangentially connected with the inner side wall are formed in the material bin. By means of the design, accumulation of materials in corners or unsmooth transition areas can be reduced to the maximum extent, the material conveying efficiency is improved, and the risk of material deterioration is reduced. The equipment is easy to disassemble, clean and maintain, and meets the GMP (Good Manufacturing Practice) requirements of the pharmaceutical industry.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of weighing and measuring equipment, and particularly relates to a micro loss of weight scale for pharmaceutical industry. BACKGROUND

[0002] In the pharmaceutical, food, and other industries, high-precision material metering and conveying are required. The existing mechanical structure cannot meet the requirements of the GMP pharmaceutical quality production management standard in the pharmaceutical industry. For example, a new micro loss of weight scale with the application number 201820166573.5 discloses a stirring barrel, which is in an inverted conical shape. The bottom of the stirring barrel is connected to a screw feeding device. The connection between the two is not smooth. The screw feeding device at the bottom of the conical stirring barrel is expanded to form a spherical shape. In this way, material accumulation is likely to occur at the excessive position of the two. Moreover, the inner wall of the conical stirring barrel is also likely to support the material, resulting in material accumulation.

[0003] Another application number 202320548376.0 discloses a micro additive loss of weight type feeding scale, which has a cylindrical weighing bin. The bottom of the weighing bin is connected to an electronic loss of weight scale in a planar manner. The inside of the weighing bin also has a large accumulation dead angle.

[0004] As can be seen, the existing loss of weight scale has an accumulation dead angle in the external structure and internal cavity. Material is likely to accumulate and deteriorate. Moreover, the material bin is not easy to clean and wash. Disassembly is cumbersome and inconvenient for maintenance. Generally, the loss of weight scale commonly seen on the market has a high material residue rate of 90%. In the scenario where the material needs to be replaced, the material will be wasted.

[0005] In view of the above, it is necessary to propose a micro loss of weight scale for pharmaceutical industry to solve the above problems. SUMMARY

[0006] The utility model aims at overcoming the defects in the prior art and providing a micro loss of weight scale for pharmaceutical industry.

[0007] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a micro loss of weight scale for pharmaceutical industry, comprising a weighing platform, a horizontal stirring and conveying device is arranged on the weighing platform, a material bin is arranged on the stirring and conveying device, the material bin comprises a spherical hopper and a cylindrical hopper, the bottom of the spherical hopper is a hemispherical bottom, a cylindrical barrel is connected to the upper side of the hemispherical bottom, the cylindrical hopper is in a cylindrical shape, the diameter of the cylindrical barrel is the same as that of the cylindrical hopper, and the cylindrical hopper is detachably installed on the upper part of the spherical hopper; the inside of the material bin forms a vertical inner side wall and a hemispherical inner bottom wall connected to the inner side wall tangentially.

[0008] Further, the stirring and conveying device comprises a gear box, a stirring shaft and a conveying screw, the stirring shaft and the conveying screw are horizontally arranged, the stirring shaft is located on the upper side of the conveying screw, and the stirring shaft extends into the interior of the spherical hopper from the tangent connection between the cylindrical barrel and the semispherical bottom and applies horizontal stirring to the internal materials.

[0009] Further, the conveying screw is connected to the bottom of the spherical hopper, the end of the conveying screw extends out of the interior of the weighing platform and is provided with a discharge pipe vertically arranged outside, and the other end of the conveying screw and the stirring shaft are both connected to the interior of the driving end of the stirring and conveying device, and the driving end is provided with a dustproof cover outside.

[0010] Further, the closed shaft sleeves outside the stirring shaft and the conveying screw are fixedly connected to the shell of the spherical hopper, the two closed shaft sleeves are detachably connected to the driving end, and the end of the closed shaft sleeve is connected to the driving end through a drive shaft sanitary clamp.

[0011] Further, the spherical hopper is connected to the cylindrical hopper through a lower sanitary clamp, the opening on the cylindrical hopper is provided with a hopper cover, and the cylindrical hopper is connected to the hopper cover through an upper sanitary clamp.

[0012] Further, the lower end of the discharge pipe extends into the sleeve pipe, the two are non-contact sleeve connection, and the lower end of the sleeve pipe is provided with a flexible connection.

[0013] Further, the electric control cabinet is further provided, the upper plane of the electric control cabinet is provided with a mounting platform, the weighing platform is arranged on the mounting platform, one side of the mounting platform is provided with a support frame, and the support frame is connected to the sleeve pipe and used for positioning the position of the sleeve pipe.

[0014] Further, the side wall of the cylindrical hopper is provided with an observation window.

[0015] The improved design of the utility model adopts a spherical hopper and a semispherical bottom, so that a vertical inner side wall and a semispherical inner bottom wall connected with the inner side wall are formed in the interior of the material bin. This design can maximize the reduction of the accumulation of materials in the corners or the unsmooth transition area, improve the efficiency of material conveying, and reduce the risk of material deterioration. The cylindrical hopper is detachably installed on the upper portion of the spherical hopper, and the sanitary clamp connection mode between the various components makes the equipment easy to disassemble, clean and maintain, and meets the GMP requirements of the pharmaceutical industry. The stirring shaft is located on the upper side of the conveying screw and extends into the interior of the spherical hopper from the tangent connection between the cylindrical barrel and the semispherical bottom, so that the materials can be effectively stirred in the horizontal direction, the uniformity of the materials is ensured, and the materials are prevented from accumulating at the bottom. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of a micro-weight loss scale used in the pharmaceutical industry.

[0017] Figure 2 is a side view of a micro loss weight scale used in the pharmaceutical industry;

[0018] In the figure: 1, weighing table; 2, stirring and conveying device; 3, material bin; 4, spherical hopper; 5, cylindrical hopper; 6, cylindrical barrel; 7, hemispherical bottom; 8, gear box; 9, stirring shaft; 10, conveying screw; 11, discharge pipe; 12, dust cover; 13, drive shaft sanitary clamp; 14, lower sanitary clamp; 15, hopper cover; 16, upper sanitary clamp; 17, sleeve pipe; 18, flexible connection; 19, electric control cabinet; 20, mounting platform; 21, support frame; 22, observation window. DETAILED DESCRIPTION

[0019] The specific embodiments of the present application will be further described in conjunction with the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical scheme of the present application, and cannot be used to limit the protection scope of the present application.

[0020] A micro loss weight scale used in the pharmaceutical industry, as shown in Figure 1 , 2 , includes a weighing table 1 and an electric control cabinet 19. The upper plane of the electric control cabinet 19 is provided with a mounting platform 20. The weighing table 1 is arranged on the mounting platform 20. The design of the electric control cabinet 19 and its mounting platform 20 provides more concentrated control and support structure, making the whole system more compact and efficient.

[0021] A transversely arranged stirring and conveying device 2 is arranged on the weighing table 1. A material bin 3 is arranged on the stirring and conveying device 2. The medicine is placed in the material bin 3 for loss weighing. The material bin 3 includes a spherical hopper 4 and a cylindrical hopper 5. An opening on the cylindrical hopper 5 is provided with a hopper cover 15. The cylindrical hopper 5 and the hopper cover 15 are connected through an upper sanitary clamp 16. After the medicine is loaded, the hopper cover can be closed, and then sealed through the upper sanitary clamp 16 to prevent the medicine from being affected by air and moisture.

[0022] The bottom of the spherical hopper 4 is a hemispherical bottom 7. The upper side of the hemispherical bottom 7 is connected with a cylindrical barrel 6. The cylindrical hopper 5 is in a cylindrical shape. The diameter of the cylindrical barrel 6 is the same as that of the cylindrical hopper 5. The cylindrical hopper 5 is detachably installed on the upper part of the spherical hopper 4. The inside of the material bin 3 forms a vertical inner side wall and a hemispherical inner bottom wall connected with the inner side wall. The improved design adopts the spherical hopper 4 and the hemispherical bottom 7, so that the inside of the material bin 3 forms a vertical inner side wall and a hemispherical inner bottom wall connected with the inner side wall. This design can maximize the reduction of material accumulation in the corners or non-smooth transition areas, improve the efficiency of material conveying, and reduce the risk of material deterioration. The redesigned micro loss weight scale screw has less material residue and a conveying rate of 96%.

[0023] Further, the stirring and conveying device 2 comprises a gear box 8, a stirring shaft 9 and a conveying screw 10, which are arranged horizontally, the stirring shaft 9 is located above the conveying screw 10, the stirring shaft 9 extends into the interior of the spherical hopper 4 from the tangent connection of the cylindrical barrel 6 and the hemispherical bottom 7 and applies horizontal stirring to the interior material. The stirring shaft 9 is located above the conveying screw 10 and extends into the interior of the spherical hopper 4 from the tangent connection of the cylindrical barrel 6 and the hemispherical bottom 7, which can effectively stir the material in the horizontal direction, ensure the uniformity of the material, and help prevent the material from accumulating at the bottom.

[0024] Further, the conveying screw 10 is connected to the bottom of the spherical hopper 4, the end of the conveying screw 10 extends out of the weighing platform 1 and is provided with a discharge pipe 11 vertically; the other end of the conveying screw 10 and the stirring shaft 9 are both connected to the interior of the driving end of the stirring and conveying device 2, and the driving end is provided with a dust cover 12 outside. When the conveying screw 10 operates, it can convey the medicine from the bottom of the spherical hopper 4 to the outside, and then the upper medicine falls under the action of gravity and horizontal stirring to supplement, thereby improving the conveying rate of the medicine, reducing the dead angle, and further reducing the residue of the medicine.

[0025] Further, the closed shaft sleeves outside the stirring shaft 9 and the conveying screw 10 are fixedly connected with the shell of the spherical hopper 4, the two closed shaft sleeves are detachably connected with the driving end, and the end of the closed shaft sleeve is connected with the driving end through a drive shaft sanitary clamp 13. In this way, the stirring shaft 9, the conveying screw 10 and the material bin 3 can be easily separated from the driving end, which is convenient for disassembly and cleaning, and also facilitates the replacement of the material conveying scene. Similarly, the spherical hopper 4 and the cylindrical hopper 5 are connected through a lower sanitary clamp 14, the mechanical structure of the redesigned material contact part has no accumulation dead angle in the external structure and internal cavity, and when cleaning and maintaining, the structure of the material contact part can be disassembled by disassembling the two sanitary clamps and the conveying screw 10, which is convenient and fast.

[0026] Further, the lower end of the discharge pipe 11 extends into a sleeve pipe 17, and the two are connected in a non-contact sleeve manner, and the lower end of the sleeve pipe 17 is provided with a flexible connection 18. The sleeve pipe 17 is designed without contact with the discharge pipe 11, one side of the installation platform 20 is provided with a support frame 21 connected to the sleeve pipe 17 for positioning the position. The weight of the sleeve pipe 17 can be avoided to affect the accurate weighing of the medicine, and the micro-weighing scale is optimized in structure, and the measurement accuracy can reach ±0.4%.

[0027] Further, the side wall of the cylindrical hopper 5 is provided with an observation window 22. The observation window 22 provided on the side wall of the cylindrical hopper 5 facilitates the monitoring of the material condition by the operator, and timely discovery and solution of problems.

[0028] The device meets the requirements of GMP pharmaceutical quality production management standard, meets high-precision material metering, is convenient to disassemble and maintain, and has less material residue.

[0029] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled persons in the art, without departing from the technical principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered within the protection scope of the present application.

Claims

1. A micro-loss scale for use in the pharmaceutical industry, characterized in that, The device includes a weighing platform (1), on which a horizontal stirring and conveying device (2) is installed. The stirring and conveying device (2) is equipped with a material hopper (3). The material hopper (3) includes a spherical hopper (4) and a cylindrical hopper (5). The bottom of the spherical hopper (4) is a hemispherical bottom (7). A cylindrical tube (6) is connected to the upper side of the hemispherical bottom (7). The cylindrical hopper (5) is cylindrical. The diameter of the cylindrical tube (6) is the same as that of the cylindrical hopper (5). The cylindrical hopper (5) is detachably installed on the upper part of the spherical hopper (4). This makes the interior of the material hopper (3) form a vertical inner wall and a hemispherical inner bottom wall that is tangentially connected to the inner wall.

2. The micro-loss-in-weight scale for use in the pharmaceutical industry according to claim 1, characterized in that, The mixing and conveying device (2) includes a gearbox (8), a mixing shaft (9), and a conveying screw (10). The mixing shaft (9) and the conveying screw (10) are both arranged horizontally. The mixing shaft (9) is located on the upper side of the conveying screw (10). The mixing shaft (9) extends into the interior of the spherical hopper (4) from the tangential connection between the cylindrical tube (6) and the hemispherical bottom (7) and applies horizontal mixing to the internal material.

3. A micro-loss-in-weight scale for use in the pharmaceutical industry according to claim 2, characterized in that, The conveying screw (10) is connected to the bottom of the spherical hopper (4), and the end of the conveying screw (10) extends out of the weighing platform (1) and is vertically provided with a discharge pipe (11); the other end of the conveying screw (10) and the stirring shaft (9) are both connected to the inside of the drive end of the stirring and conveying device (2), and the drive end is provided with a dust cover (12).

4. A micro-loss-in-weight scale for use in the pharmaceutical industry according to claim 3, characterized in that, The closed bushings outside the stirring shaft (9) and conveying screw (10) are fixedly connected to the outer shell of the spherical hopper (4). The two closed bushings are detachably connected to the drive end. The ends of the closed bushings are connected to the drive end through the drive shaft sanitary clamp (13).

5. A micro-loss-in-weight scale for use in the pharmaceutical industry according to claim 4, characterized in that, The spherical hopper (4) and the cylindrical hopper (5) are connected by a lower sanitary clamp (14). The opening on the cylindrical hopper (5) is provided with a hopper cover (15), and the cylindrical hopper (5) and the hopper cover (15) are connected by an upper sanitary clamp (16).

6. A micro-loss-in-weight scale for use in the pharmaceutical industry according to claim 5, characterized in that, The lower end of the discharge pipe (11) extends into the sleeve pipe (17), and the two are connected without contact. The lower end of the sleeve pipe (17) is provided with a flexible connection (18).

7. A micro-loss-in-weight scale for use in the pharmaceutical industry according to claim 6, characterized in that, It also includes an electrical control cabinet (19), the upper surface of which is provided with an installation platform (20), the weighing platform (1) is set on the installation platform (20), and a support frame (21) is provided on one side of the installation platform (20). The support frame (21) is connected to the sleeve tube (17) for positioning its position.

8. A micro-loss-in-weight scale for use in the pharmaceutical industry according to claim 6, characterized in that, The cylindrical hopper (5) has an observation window (22) on its side wall.

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