Mixing and discharging device for powder materials

Abstract

The utility model provides a kind of mixing and uniform feeding device suitable for powder material, belong to powder material mixing and discharging technical field, including mixing barrel, the upper end feed inlet of mixing barrel is communicated with negative pressure pipeline, the lower end discharge port of mixing barrel is communicated with packing machine;And conical mixing part, conical mixing part includes cone body and clamping support leg, cone body is set in the central region of mixing barrel cavity, and the outer edge between cone body and the mixing barrel inner wall is reserved with discharging gap, one end of the clamping support leg is connected with the cone body, and the other end is clamped on the mixing barrel inner wall, for fixing the cone body with the mixing barrel cavity. By setting the conical mixing part in the mixing barrel, first, relative to traditional discharging cylinder, the mode is slowed down by the effect of powder material flow rate, so that different particle size powder material collides with each other in the mixing barrel, to realize the effect of uniform mixing of different particle size powder material.

Description

Technical Field

[0001] This utility model belongs to the field of powder material mixing and feeding technology, and specifically relates to a mixing and feeding device suitable for powder materials. Background Technology

[0002] Powdered materials are aggregates composed of numerous particles and gaps, such as medicinal powder, carbon powder, and silicon powder. Based on particle size characteristics, they are classified into fine powder, medium powder, and coarse powder. Taking medicinal powder as an example, medicinal materials are washed, dried, cut, crushed, and ground to form medicinal powder particles. These particles are then packaged by a packaging machine to form individual medicine bags. Generally, medicinal powder particles are conveyed from the grinding device to the feeding device, and then fed into the packaging machine, where the packaging machine packages the medicinal powder into bags.

[0003] During the process of transporting the powder from the grinding device to the feeding device, if the distance between the grinding device and the feeding device is short, a hoist is generally used to transport the powder or it is manually handled; if the distance between the grinding device and the feeding device is long, a negative pressure pipeline is generally used for transportation. The negative pressure pipeline is based on a negative pressure environment to create a pressure difference between the pipeline and the grinding device, drawing the powder from the grinding device into the negative pressure pipeline and then transporting it to the feeding device through the negative pressure pipeline.

[0004] However, when using negative pressure pipelines to transport medicine powder, since the medicine powder includes fine powder, medium powder, and coarse powder of different particle sizes, the fine powder particles flow faster in the pipeline and the coarse powder particles flow slower. After the medicine powder is finally deposited in the feeding device, the medicine powder will stratify, with the fine powder at the bottom, the medium powder on top, and the coarse powder on the top. This results in uneven mixing of the medicine powder, causing large fluctuations in the mesh size of each bag of medicine powder when the packaging machine is filling it. Utility Model Content

[0005] Based on this, the present invention provides a mixing and feeding device suitable for powdered materials to solve the technical problem in the prior art where, during the process of conveying medicine powder using a negative pressure pipeline, the different flow speeds of medicine powder of different particle sizes in the pipeline lead to the phenomenon of powder stratification, resulting in uneven mixing of medicine powder.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A mixing and feeding device suitable for powder materials, comprising: A mixing cylinder, wherein the upper inlet of the mixing cylinder is connected to a negative pressure pipeline, and the lower outlet of the mixing cylinder is connected to a packaging machine; and A conical mixing component includes a conical body and a snap-fit ​​support leg. The conical body is disposed in the central region of the mixing cylinder cavity. A material discharge gap is reserved between the outer edge of the conical body and the inner wall of the mixing cylinder. One end of the snap-fit ​​support leg is connected to the conical body, and the other end is snapped onto the inner wall of the mixing cylinder to fix the conical body inside the mixing cylinder cavity.

[0007] Preferably, the mixing cylinder includes a cylindrical body, a funnel-shaped body, a cover, an inlet pipe, and an outlet pipe. The conical mixing component is located near the bottom of the cylindrical body. The funnel-shaped body is located at the bottom of the cylindrical body. The cover is detachably located at the top of the cylindrical body. The inlet pipe passes through the cover and extends into the inner cavity of the cylindrical body. The outlet pipe is connected to the negative pressure pipe via a flange and is located at the bottom of the funnel-shaped body.

[0008] Preferably, the cylindrical body is detachably connected to the cover body by a plurality of double-headed nuts.

[0009] Preferably, the discharge pipes are provided in several groups, arranged sequentially at the bottom of the funnel cylinder, and a discharge control valve is provided on the discharge pipes.

[0010] Preferably, the feeding pipe is provided with a viewing window.

[0011] Preferably, the cone body is one of a circular cone or a prismatic cone.

[0012] Preferably, the cone body is a circular cone, and the angle α between the central axis of the cone body and the surface of the cone body is 40°-60°.

[0013] Preferably, the inner wall of the mixing cylinder is provided with a snap-fit ​​seat, and the snap-fit ​​support leg includes an extension rod, a buckle and a pull lug. One end of the extension rod is connected to the cone body, and the other end of the extension rod is connected to the buckle. The buckle can snap and fix on the snap-fit ​​seat, and the pull lug is located above the extension rod.

[0014] Preferably, the snap-fit ​​support legs are provided in several groups and are evenly distributed on the outer edge of the cone body.

[0015] Preferably, the cross-section of the latch seat is convex upward, the cross-section of the buckle is convex upward, and the buckle is latched onto the latch seat and fits snugly against each other.

[0016] Compared with the prior art, the present invention has at least the following advantages: By setting the conical mixing component inside the mixing cylinder, firstly, compared to a traditional feeding cylinder, this method slows down the flow rate of the powder material, allowing powder materials of different particle sizes to collide with each other within the mixing cylinder, thus achieving uniform mixing of powder materials of different particle sizes and reducing the mesh size fluctuation of each bag of medicine powder during packaging. Secondly, compared to setting a stirring device inside the mixing cylinder, which can clog the powder material feeding and requires motor-assisted rotation, resulting in high cost and large space occupation, this method has a simple structure, does not require stirring of the powder material, and can still achieve the effect of mixing powder materials of different particle sizes. At the same time, the conical mixing component is snapped into the mixing cylinder by the snap-fit ​​support leg, making disassembly convenient and facilitating the inspection and cleaning of the mixing cylinder during regular maintenance. Attached Figure Description

[0017] Figure 1 Axonometric drawing of a mixing and feeding device suitable for powder materials.

[0018] Figure 2 This is a front view of a mixing and feeding device suitable for powder materials.

[0019] Figure 3 for Figure 2 The main view of AA.

[0020] Figure 4 This is the front view of the mixing cylinder.

[0021] Figure 5 This is a top view of the mixing cylinder.

[0022] Figure 6 This is an isometric drawing of a cone-shaped mixed material component.

[0023] In the figure: mixing cylinder 100, cylindrical body 110, snap-fit ​​seat 111, funnel body 120, cover 130, double-ended nut 131, feed pipe 140, discharge pipe 150, discharge control valve 151, viewing window 152, conical mixing component 200, conical body 210, snap-fit ​​support leg 220, extension rod 221, buckle 222, pull lug 223, negative pressure pipe 300. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.

[0025] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0026] Please refer to Figures 1 to 6 A mixing and feeding device suitable for powdered materials, comprising: A mixing cylinder 100, wherein the upper inlet of the mixing cylinder 100 is connected to a negative pressure pipeline 300, and the lower outlet of the mixing cylinder 100 is connected to a packaging machine; and A conical mixing component 200 includes a conical body 210 and a snap-fit ​​support leg 220. The conical body 210 is disposed in the central region of the cavity of the mixing cylinder 100. A material discharge gap is reserved between the outer edge of the conical body 210 and the inner wall of the mixing cylinder 100. One end of the snap-fit ​​support leg 220 is connected to the conical body 210, and the other end is snapped onto the inner wall of the mixing cylinder 100 to fix the conical body 210 in the cavity of the mixing cylinder 100.

[0027] Specific work process After the powder material (such as pharmaceutical powder) drawn from the negative pressure pipe 300 enters the mixing cylinder 100, the powder material will rush directly to the surface of the cone body 210. The cone body 210 will prevent the powder material from falling directly to the bottom of the mixing cylinder 100. The cone body 210 has the function of slowing down the flow rate of the powder material. By reducing the flow rate of the powder material, the fine powder, medium powder and coarse powder in the powder material will be mixed. And because the cone body 210 has a downward inclined surface, the mixed powder material will slide off the cone body 210 and fall from the material discharge gap between the outer edge of the cone body 210 and the inner wall of the mixing cylinder 100, and finally fall to the bottom of the mixing cylinder 100. By setting the conical mixing component 200 inside the mixing cylinder 100, firstly, compared to a traditional feeding cylinder, this method slows down the flow rate of the powder material, allowing powder materials of different particle sizes to collide with each other within the mixing cylinder 100, thus achieving uniform mixing of powder materials of different particle sizes and reducing the mesh size fluctuation of each bag of medicine powder during packaging. Secondly, compared to setting a stirring device inside the mixing cylinder 100, which can clog the powder material feeding and requires motor-assisted rotation, resulting in high cost and large space occupation, this method has a simple structure, does not require stirring of the powder material, and can still achieve the effect of mixing powder materials of different particle sizes. At the same time, the conical mixing component 200 is snapped into the mixing cylinder 100 by the snap-fit ​​support leg 220, making disassembly convenient and facilitating the maintenance and cleaning of the mixing cylinder 100 during regular maintenance and cleaning.

[0028] In one possible embodiment, see Figures 1 to 5 The mixing cylinder 100 includes a cylindrical body 110, a funnel-shaped cylinder 120, a cover 130, an inlet pipe 140, and an outlet pipe 150. The diameter of the cylindrical body 110 is larger than the diameter of the conical body 210. The conical mixing component 200 is located near the bottom of the cylindrical body 110, allowing powdered materials to slide down from both sides of the conical body 210. The inner cavity of the cylindrical body 110 serves to mix the materials. The funnel-shaped cylinder 120 is disposed within the cylindrical body. At the bottom of the 110, the funnel body 120 serves to collect powder materials for easy feeding. The cover 130 is detachably mounted on the top of the cylindrical body 110. The feed pipe 140 passes through the cover 130 and extends into the inner cavity of the cylindrical body 110. The discharge pipe 150 is connected to the negative pressure pipe 300 via a flange. The discharge pipe 150 is located at the bottom of the funnel body 120. The mixed powder materials flow out from the discharge pipe 150 and enter the packaging machine.

[0029] Specifically, the cylindrical body 110 can be detachably connected to the cover 130 via a number of double-headed nuts 131. After being connected by the double-headed nuts 131, disassembly is convenient, and the cylindrical body 110 and the cover 130 are sealed by a sealing gasket. After being fastened by the double-headed nuts 131, the sealing performance is good.

[0030] Specifically, the cylindrical body 110 can be detachably connected to the cover 130 via a clamp.

[0031] In a preferred embodiment, several sets of discharge pipes 150 are arranged sequentially at the bottom end of the funnel cylinder 120, and a discharge control valve 151 is provided on each discharge pipe 150. By setting several sets of discharge pipes, the discharge speed of the discharge pipes 150 is adjusted by controlling the number of openings of the discharge control valves 151.

[0032] In a preferred embodiment, a viewing window 152 is provided on the feeding pipe. By periodically opening different feeding control valves 151, the powder material can be observed through the viewing window 152 to see if it is in a mixed state. For example, three sets of discharge pipes 150 are provided, namely discharge pipe 1 150, discharge pipe 2 150, and discharge pipe 3 150. The feeding control valve 151 of discharge pipe 1 150 is closed, while discharge pipes 2 150 and 3 150 are opened. The current powder material can be observed through the viewing window 152 of discharge pipe 1 150 to see if it is mixed evenly. After a certain period of time, such as 1 hour, discharge pipe 2 150 is closed, while discharge pipes 1 150 and 3 150 are opened. The current powder material can be observed through the viewing window 152 of discharge pipe 2 150 to see if it is mixed evenly. The powder mixing state can be manually observed in real time to avoid stratification of the powder material.

[0033] In a preferred embodiment, see Figure 6 The cone body 210 is one of a circular cone or a prismatic cone. Both circular and prismatic cones have inclined surfaces and serve to slow down the flow rate of powdered materials. Specifically, the prismatic cone is one of a triangular pyramid, a square pyramid, or a hexagonal pyramid.

[0034] Specifically, the cone body 210 is a circular cone. A circular cone is easy to manufacture and facilitates the sliding of powder materials. The angle between the central axis of the cone body 210 and the surface of the cone body 210 is 40°-60°. This not only slows down the flow rate of the powder materials but also prevents the powder materials from remaining on the surface of the cone body 210 for a long time. If the angle is too large, the powder materials will remain on the surface of the cone body 210 for a long time, and even cause powder material congestion. If the angle is too small, the effect of the cone body 210 in slowing down the flow rate of the powder materials will decrease, resulting in uneven mixing of the powder materials.

[0035] In a preferred embodiment, see Figure 5 The mixing cylinder 100 has a snap-fit ​​seat 111 on its inner wall, see [link / reference]. Figure 6 The snap-fit ​​support leg 220 includes an extension rod 221, a buckle 222, and a pull lug 223. One end of the extension rod 221 is connected to the conical body 210, and the other end is connected to the buckle 222. The buckle 222 can snap and fix onto the snap-fit ​​seat 111, and the pull lug 223 is located above the extension rod 221. The snap-fit ​​seat 111 is specifically located at the bottom of the cylindrical body 110. By setting the extension rod 221 and the buckle 222, the buckle 222 snaps onto the snap-fit ​​seat 111, which allows the conical body 210 to be fixed inside the mixing cylinder 100, and also allows a material gap to be left between the outer edge of the conical body 210 and the inner wall of the mixing cylinder 100. Generally, the material gap width is 5cm-15cm. Specifically, the buckle 222 and the snap-fit ​​seat 111 can be detachably connected by sleeve or overlap. The cone-shaped mixing component 200 is lifted from the mixing cylinder 100 by manually hooking the pull lug 223 for maintenance and cleaning.

[0036] In a preferred embodiment, several sets of snap-fit ​​support legs 220 are evenly distributed along the outer edge of the cone body 210. These sets of snap-fit ​​support legs 220 provide stable support for the cone body 210. Specifically, three sets of snap-fit ​​support legs 220 are provided.

[0037] In a preferred embodiment, the cross-section of the latching seat 111 is convex upwards, and the cross-section of the buckle 222 is also convex upwards. The buckle 222 is latched onto the latching seat 111 and they fit together. The way the buckle 222 overlaps with the latching seat 111 is more conducive to attaching the buckle 222 to the latching seat 111.

[0038] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A mixing and discharging device for powder materials, characterized in that, include A mixing cylinder, wherein the upper inlet of the mixing cylinder is connected to a negative pressure pipeline, and the lower outlet of the mixing cylinder is connected to a packaging machine; and A conical mixing component includes a conical body and a snap-fit ​​support leg. The conical body is disposed in the central region of the mixing cylinder cavity. A material discharge gap is reserved between the outer edge of the conical body and the inner wall of the mixing cylinder. One end of the snap-fit ​​support leg is connected to the conical body, and the other end is snapped onto the inner wall of the mixing cylinder to fix the conical body inside the mixing cylinder cavity.

2. The uniform mixing and discharging device for powder material according to claim 1, wherein, The mixing cylinder includes a cylindrical body, a funnel-shaped body, a cover, an inlet pipe, and an outlet pipe. The conical mixing component is located near the bottom of the cylindrical body. The funnel-shaped body is located at the bottom of the cylindrical body. The cover is detachably located at the top of the cylindrical body. The inlet pipe passes through the cover and extends into the inner cavity of the cylindrical body. The outlet pipe is connected to the negative pressure pipe via a flange. The outlet pipe is located at the bottom of the funnel-shaped body.

3. The uniform mixing and discharging device for powder material according to claim 2, wherein The cylindrical body is detachably connected to the cover body by several double-headed nuts.

4. The uniform blending and discharging device for powder material according to claim 2, wherein, Several sets of discharge pipes are arranged sequentially at the bottom of the funnel cylinder, and a discharge control valve is provided on the discharge pipe.

5. The uniform blending and discharging device for powder material according to claim 4, wherein, A viewing window is provided on the discharge pipe.

6. The uniform blending and discharging device for powder material according to claim 1, wherein, The cone body is either a circular cone or a prismatic cone.

7. The mixing and feeding device for powder materials as described in claim 6, characterized in that, The cone body is a circular cone, and the angle α between the central axis of the cone body and the surface of the cone body is 40°-60°.

8. The uniform mixing and discharging device for powder material according to claim 1 or 6, wherein The inner wall of the mixing cylinder is provided with a snap-fit ​​seat. The snap-fit ​​support leg includes an extension rod, a buckle, and a pull lug. One end of the extension rod is connected to the cone body, and the other end of the extension rod is connected to the buckle. The buckle can snap and fix on the snap-fit ​​seat, and the pull lug is located above the extension rod.

9. The uniform mixing and discharging device for powder material according to claim 8, wherein The snap-fit ​​support legs are provided in several groups and are evenly distributed on the outer edge of the cone body.

10. The uniform blending and discharging device for powder material according to claim 8, wherein, The cross-section of the latch seat is convex upward, and the cross-section of the buckle is convex upward. The buckle is latched onto the latch seat and fits snugly against each other.

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