Powder medicament feeding device

Abstract

The utility model relates to the technical field of medicament feeding devices, and discloses a powder medicament feeding device which comprises a conveying pipe, a feeding port and a discharging port are formed in the conveying pipe, control valves are arranged in the feeding port and the discharging port, and the control valves are used for controlling opening and closing of the feeding port and the discharging port. A screw rod is arranged in the conveying pipe, the central axis of the screw rod and the central axis of the conveying pipe are collinear, the screw rod can rotate along the central axis of the screw rod, and the screw rod is used for pushing the powder medicament to move in the conveying pipe from the feeding port to the discharging port; and a cleaning brush is arranged between the screw rod and the inner wall of the conveying pipe and is used for cleaning the powder medicament on the inner wall of the conveying pipe. The powder medicament conveying device has the advantages of being high in powder medicament conveying efficiency and good in powder medicament hardening and blocking prevention effect.

Description

Technical Field

[0001] This utility model relates to the field of drug dispensing devices, specifically to a powder drug dispensing device. Background Technology

[0002] In chemical production and processing, such as when disinfecting liquids like water, disinfectants are typically added. Sodium hypochlorite hydrolyzes to form hypochlorous acid, which further decomposes to form nascent oxygen. The extremely strong oxidizing properties of nascent oxygen neutralize proteins and other substances on bacteria and viruses. It does not pose the safety hazards of liquid chlorine or chlorine dioxide, and its disinfection effect is widely recognized as comparable to chlorine gas. Therefore, sodium hypochlorite is commonly used for disinfection. When adding sodium hypochlorite to water for hydrolysis, it is usually added in powder form, requiring a powder dispensing device.

[0003] For example, patent document CN211725656U discloses a high-precision quantitative feeding device for powdered medicines, including a box body with a hopper connected to the top right side of the box body, and a material transfer component inside the box body. This high-precision quantitative feeding device for powdered medicines, through the cooperation of the box body, discharge box, hopper, and transfer component, allows the device to increase the contact area between the screws and the powdered material by having four screws revolve and rotate within the box body during powder material transfer, thus effectively preventing leakage and improving transfer accuracy. The cooperation of the box body, discharge box, hopper, and grinding component allows the device to compress and grind lumpy materials during material feeding, improving the uniformity of the powder. The cooperation of the box body, discharge box, hopper, and vibration component allows for vibration transfer within the box body, preventing material from adhering to the walls and further increasing transfer accuracy.

[0004] While the aforementioned technical solution can achieve high-precision dispensing of powdered agents and reduce the phenomenon of powdered materials adhering to the walls of the dispensing device, there are still some drawbacks. When dispensing sodium hypochlorite, because one end of the dispensing device is close to the water tank where the sodium hypochlorite and other agents are dissolved, the water in the tank can easily evaporate or sublimate and enter the dispensing device. This increases the humidity inside the dispensing device, causing the sodium hypochlorite remaining in the device to easily absorb water and clump together. The clumped sodium hypochlorite tends to stick to the side walls of the dispensing device, leading to blockages and affecting its normal operation. Utility Model Content

[0005] The present invention aims to provide a powder dispensing device to solve the technical problem in the prior art where powdered medicines in the dispensing device are easily caking and clogging, affecting the normal operation of the dispensing device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a powder dispensing device, comprising a conveying pipe, wherein an inlet and an outlet are provided on the conveying pipe, and control valves are provided in the inlet and the outlet for controlling the opening and closing of the inlet and the outlet; a screw is provided inside the conveying pipe, wherein the central axis of the screw is collinear with the central axis of the conveying pipe, and the screw is rotatable along its own central axis, and the screw is used to push the powder medicine to move from the inlet to the outlet in the conveying pipe; a cleaning brush is provided between the screw and the inner wall of the conveying pipe, and the cleaning brush is used to clean the powder medicine on the inner wall of the conveying pipe.

[0007] The principle and advantages of this scheme are as follows: When dispensing the powdered medicine, it is fed into the conveying pipe through the inlet. The rotating screw inside the pipe pushes the powdered medicine towards the outlet, where it is dispensed. During the conveying process, a cleaning brush on the screw removes any residual powder adhering to the inner wall of the conveying pipe. After dispensing, the inlet and outlet of the conveying pipe are closed by the first and second control valves to prevent moisture from the external environment from entering the pipe.

[0008] In this solution, the powdered agent is conveyed through a delivery pipe during dispensing. This ensures accurate delivery of the powder to the dissolving tank. A cleaning brush is installed inside the delivery pipe to clean its inner wall, reducing powder residue buildup and preventing blockages. Furthermore, control valves at both the inlet and outlet of the delivery pipe prevent moisture from entering when not in use, thus avoiding increased humidity and the likelihood of powder sticking to the pipe's inner wall.

[0009] Preferably, as an improvement, the inlet is located on the side of the conveying pipe near its end, and the outlet is located on the side of the conveying pipe away from the inlet, with the inlet and outlet distributed opposite to each other on both sides of the conveying pipe. This allows the powdered medicine to enter from the inlet of the conveying pipe under the influence of gravity and exit from the outlet, improving the convenience of the powdered medicine conveying process.

[0010] Preferably, as an improvement, the bristles of the cleaning brush are evenly distributed along the extending direction of the spiral blades of the screw. One end of the cleaning brush is connected to the screw, and the other end extends towards the inner wall of the conveying pipe. The length of the bristles of the cleaning brush matches the gap between the screw and the inner wall of the conveying pipe. This allows the screw to clean the inner wall of the conveying pipe simultaneously during rotation, preventing the powdered medicine from adhering to the inner wall.

[0011] Preferably, as an improvement, the conveying pipe has an air inlet at one end near the feed port, and a nozzle is provided inside the air inlet for supplying compressed air into the conveying pipe. By supplying compressed air into the conveying pipe, the powdered medicine inside the conveying pipe can move towards the discharge port under the blowing of the compressed air, thereby improving the efficiency of powdered medicine conveying in the conveying pipe and reducing powdered medicine residue in the conveying pipe.

[0012] Preferably, as an improvement, the nozzle is equipped with a one-way valve. This prevents powdered medicine from entering the nozzle when compressed air is not being supplied, thus preventing nozzle clogging.

[0013] Preferably, as an improvement, the inner wall of the conveying pipe and the surface of the screw are provided with an anti-stick coating. This improves the smoothness of the inner wall of the conveying pipe and the surface of the screw, reduces the friction experienced by the powder during conveying, improves the conveying efficiency of the powder, and reduces the adhesion of the powder to the inner wall of the conveying pipe and the screw.

[0014] Preferably, as an improvement, the conveying pipe is inclined downwards from one end of the inlet to one end of the outlet, and the inclination angle of the conveying pipe is 10°-15°. This allows the powdered medicine to automatically slide towards the outlet end under the action of gravity inside the conveying pipe, further reducing the accumulation of powdered medicine inside the conveying pipe.

[0015] Preferably, as an improvement, the conveying pipe is equipped with a heating component. This allows the conveyed powdered medicine to be heated by the heating component when the ambient humidity is high, promoting the expulsion of moisture from the powdered medicine, improving the dryness and looseness of the powdered medicine, and reducing its stickiness. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the powder dispensing device in an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the conveying pipe in an embodiment of this utility model. Detailed Implementation

[0018] The following detailed description illustrates the specific implementation method:

[0019] The reference numerals in the accompanying drawings include: conveying pipe 1, feed inlet 101, discharge outlet 102, screw 103, powder silo 2, dissolving tank 3, control valve 4, nozzle 5, cleaning brush 6, heating assembly 7.

[0020] As attached Figure 1 As shown, a powdered medicine dispensing device includes a conveying pipe 1, one end of which is connected to a powder silo 2, and the other end of which is provided with a dissolving tank 3. The conveying pipe 1 is used to convey the powdered medicine in the powder silo 2 to the dissolving tank 3 for dissolution.

[0021] The conveying pipe 1 is a cylindrical pipe, and both ends of the conveying pipe 1 are closed. An inlet 101 and an outlet 102 are respectively opened on both sides of the conveying pipe 1. The inlet 101 is located on the side of the conveying pipe 1 closer to the end, and the outlet 102 is located on the side of the conveying pipe 1 away from the inlet 101. The inlet 101 and outlet 102 are distributed opposite to each other on both sides of the conveying pipe 1. Specifically, the inlet 101 is located at the top of the side wall of one end of the conveying pipe 1, and the outlet 102 is located at the bottom of the side wall of the end away from the inlet 101. Both the inlet 101 and outlet 102 are connected to the conveying pipe 1. This allows the powdered medicine to enter through the inlet 101 and exit through the outlet 102 of the conveying pipe 1 under the action of gravity when conveying the powdered medicine, improving the convenience of the powdered medicine conveying process.

[0022] The powder silo 2 is connected to the conveying pipe 1 via the inlet 101, and the outlet 102 is connected to the dissolving tank 3 via a pipe. The specific structures of the powder silo 2 and the dissolving tank 3 are existing technologies and will not be described in detail here. This allows the conveying pipe 1 to seal the powder during transport, preventing the powder from spilling during the process.

[0023] A screw 103 is installed inside the conveying pipe 1, and the central axis of the screw 103 is collinear with the central axis of the conveying pipe 1. Both ends of the screw 103 are rotatably connected to both ends of the conveying pipe 1 via rotating shafts. One end of the screw 103 is also connected to the output shaft of a motor via a drive shaft. The motor drives the screw 103 to rotate along its own central axis, allowing the conveying pipe 1 and the screw 103 to form a screw conveyor. The specific structure of the screw 103 and the specific details of its rotation for conveying powdered pharmaceuticals are existing technologies and will not be described further here.

[0024] Control valves 4 are installed in the inlet 101 and the outlet 102. The control valves 4 are used to control the opening and closing of the inlet 101 and the outlet 102. The first control valve 4 and the second control valve 4 can both be pipeline control valves such as solenoid valves. The specific structure of the control valve 4 is existing technology and will not be described in detail here.

[0025] An air inlet is provided at one end of the conveying pipe 1 near the feed inlet 101. The air inlet is located at the end of the conveying pipe 1 and extends through the side wall of the conveying pipe 1. A nozzle 5 is embedded in the air inlet. The output port of the nozzle 5 is located inside the conveying pipe 1, and the input port of the nozzle 5 is located outside the conveying pipe 1. The input port of the nozzle 5 is connected to a blower through a pipe. The blower is used to deliver compressed air into the conveying pipe 1 through the nozzle 5. By delivering compressed air into the conveying pipe 1, the powder in the conveying pipe 1 can move towards the discharge port 102 under the blowing of the compressed air, thereby improving the efficiency of powder delivery in the conveying pipe 1 and reducing powder residue in the conveying pipe 1.

[0026] A one-way valve is also provided at the output port of the nozzle 5. The one-way valve is used to control the one-way delivery of compressed air into the delivery pipe 1. This prevents powdered medicine from entering the nozzle 5 when compressed air is not being delivered, thus preventing the nozzle 5 from becoming clogged.

[0027] As attached Figure 2 As shown, a cleaning brush 6 is fixedly connected to the screw 103 by bolts or clips. The bristles of the cleaning brush 6 are evenly distributed along the extension direction of the spiral blades of the screw 103. One end of the cleaning brush 6 is fixedly connected to the edge of the spiral blades of the screw 103, and the other end of the cleaning brush 6 extends towards the inner wall of the conveying pipe 1. The length of the bristles of the cleaning brush 6 matches the gap between the screw 103 and the inner wall of the conveying pipe 1. This allows the screw 103 to clean the inner wall of the conveying pipe 1 simultaneously during rotation, preventing the powder medicine from adhering to the inner wall.

[0028] An anti-stick coating is sprayed onto the inner wall of the conveying pipe 1 and the surface of the screw 103. This anti-stick coating can be a polymer coating such as polyethylene or polytetrafluoroethylene. Preferably, in this embodiment, the inner wall of the conveying pipe 1 and the surface of the screw 103 are coated with a polyethylene coating. This improves the smoothness of the inner wall of the conveying pipe 1 and the surface of the screw 103, reduces the friction experienced by the powder during conveying, improves the conveying efficiency of the powder, and reduces the adhesion of the powder to the inner wall of the conveying pipe 1 and the screw 103.

[0029] The conveying pipe 1 slopes downwards from one end of the inlet 101 to one end of the outlet 102, with the slope angle of the conveying pipe 1 being 10°-15°. Preferably, in this embodiment, the slope angle of the conveying pipe 1 is 10°. This allows the powdered medicine to automatically slide down to the outlet 102 under the action of gravity within the conveying pipe 1, further reducing the accumulation of powdered medicine within the conveying pipe 1.

[0030] A heating component 7 is provided inside the conveying pipe 1. The heating component 7 is used to heat the material inside the conveying pipe 1. Specifically, the heating component 7 is embedded in the side wall of the conveying pipe 1. The heating component 7 can be a heating mechanism such as an electric heating wire or a heating tube. Preferably, in this embodiment, the heating component 7 is an electric heating wire to heat the conveying pipe 1. The heating wire extends circumferentially towards both ends of the conveying pipe 1 within the side wall of the conveying pipe 1. The specific structure and heating process of the heating component 7 are existing technologies and will not be described in detail here. This allows the conveyed powdered medicine to be heated by the heating component 7 when the ambient humidity is high, promoting the expulsion of moisture from the powdered medicine, improving the dryness and looseness of the powdered medicine, and reducing the stickiness of the powdered medicine.

[0031] The specific implementation process is as follows:

[0032] When dispensing the powdered medicine, it is transported from the powder silo 2 through the inlet 101 into the conveying pipe 1. The screw 103 inside the conveying pipe 1 rotates, pushing the powdered medicine towards the outlet 102, and then conveying it through the outlet 102 into the dissolving tank 3 for dissolution. During the powdered medicine conveying process, the cleaning brush 6 on the screw 103 brushes off any residual powdered medicine adhering to the inner wall of the conveying pipe 1. After the powdered medicine is dispensed, the inlet 101 and outlet 102 of the conveying pipe 1 are closed by the first control valve 4 and the second control valve 4 to prevent moisture from the external environment from entering the conveying pipe 1.

[0033] Compared to existing technologies, this solution utilizes a conveying pipe 1 to accurately deliver the powdered agent to the dissolving tank 3. Simultaneously, a cleaning brush 6 is installed inside the conveying pipe 1 to clean its inner wall, reducing powder residue buildup and preventing blockages. Furthermore, control valves 4 at the inlet 101 and outlet 102 of the conveying pipe 1 are used to seal it, preventing moisture from entering when not in use and increasing humidity, which could lead to powder adhesion to the inner wall of the pipe 1.

[0034] It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A powder medicament dispensing device, characterized by: The powder medicine conveying device comprises a conveying pipe, an inlet and an outlet are arranged on the conveying pipe, control valves are arranged in the inlet and the outlet, the control valves are used for controlling the opening and closing of the inlet and the outlet, a screw is arranged in the conveying pipe, the central axis of the screw is collinear with the central axis of the conveying pipe, the screw can rotate along the central axis, the screw is used for pushing the powder medicine to move in the conveying pipe from the inlet to the outlet, and a cleaning brush is arranged between the screw and the inner wall of the conveying pipe, the cleaning brush is used for cleaning the powder medicine on the inner wall of the conveying pipe.

2. A powder dispensing device according to claim 1, characterised in that: The inlet is arranged on one side of the conveying pipe close to the end, the outlet is arranged on one side of the conveying pipe away from the inlet, and the inlet and the outlet are distributed on the opposite sides of the conveying pipe.

3. A powder dispensing device according to claim 1, wherein: The bristles of the cleaning brush are uniformly arranged along the extension direction of the spiral blades of the screw, one end of the cleaning brush is connected with the screw, the other end of the cleaning brush extends to the inner wall of the conveying pipe, the length of the bristles of the cleaning brush matches the gap between the screw and the inner wall of the conveying pipe.

4. A powder dispensing device according to claim 1, wherein: An air inlet is arranged on the end of the conveying pipe close to the inlet, a spray head is arranged in the air inlet, and the spray head is used for conveying compressed air into the conveying pipe.

5. A powder dispensing device according to claim 4, wherein: A one-way valve is arranged in the spray head.

6. A powder dispensing device according to claim 1, wherein: An anti-sticking coating is arranged on the inner wall of the conveying pipe and the surface of the screw.

7. A powder dispensing device according to claim 1, wherein: The conveying pipe is downwardly inclined from the end of the inlet to the end of the outlet, and the inclination angle of the conveying pipe is 10°-15°.

8. A powder dispensing device according to claim 1, wherein: A heating assembly is arranged in the conveying pipe.

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