Laser particle size analyzer for detecting particle size of medicine powder

Abstract

The utility model discloses a laser particle size instrument for medicine particle size detection. Its technical scheme main points are: including instrument main part and test platform, the surface of test platform is provided with the feed inlet, the below of feed inlet is provided with the hopper, the concentrated falling groove, the sample cup and the laser particle size detection subassembly of setting in sample cup one side in proper order, at least is provided with one static electricity elimination subassembly in concentrated falling groove, and static electricity elimination subassembly includes the casing that is connected with the top wall of concentrated falling groove through the connecting column, the inside of casing is provided with the negative ion generator, and the negative ion generator is fixedly connected with casing through the support, and the bottom of negative ion generator is provided with the emission end, and the bottom of casing is provided with the emission mouth, and the top of static electricity elimination subassembly is provided with the air supply component in coordination. The utility model discloses through the air supply component air supply cooperation static electricity elimination subassembly to keep the environment stable in concentrated falling groove, avoids the internal medicine granule mutual rubbing and produces the agglomeration phenomenon, thereby reaches the effect of accurate detection.

Description

Technical Field

[0001] This utility model relates to the field of laser detection equipment technology, and in particular to a laser particle size analyzer for detecting the particle size of pharmaceutical powder. Background Technology

[0002] Laser particle size analyzers work on the principle of laser scattering. Different particle sizes result in different distributions of scattered light energy with varying scattering angles. This distribution is called the scattering spectrum. Laser particle size analyzers invert particle size and its distribution by detecting the scattering spectrum of a particle group.

[0003] A laser particle size analyzer typically consists of a laser, lens, photoelectric receiver array, signal conversion and transmission system, sample dispersion system, and data processing system.

[0004] When measuring the particle size of samples using existing laser particle size analyzers, the samples are usually placed in a sample cup and measured on the test stage. Typically, after the measurement is completed, the next batch of samples is placed in the sample cup and measured again, resulting in a low measurement speed. In addition, when using some particle size analyzers that can feed materials, the samples often stick to the side wall of the feed tube, making it impossible to effectively test some samples.

[0005] To address the aforementioned issues, Chinese Patent No. CN214201088U discloses a high-efficiency laser particle size analyzer, comprising an instrument body, a test platform fixedly installed at the top center of the instrument body, sealing gaskets fixedly installed along the sides of the empty trough, a feed inlet at the bottom center of the empty trough, a feeding funnel inside the instrument body, a stirring tank inside the instrument body, a fixed platform abutting at the bottom of the stirring tank, and a lifting platform movably connected to the inner wall of the bottom of the instrument body.

[0006] The above-described scheme uses a rotating rod to drive a sample scraper, causing samples adhering to the inner wall to fall into the mixing tank below, effectively preventing sample adhesion. A collecting scraper, also connected to the rotating rod, collects samples falling into the mixing tank and directs them to the sample cup below for testing. This orderly sample collection improves efficiency. However, because the powder generates static electricity through friction, it easily adheres to the tank or agglomerates, affecting the accuracy of particle size detection. Therefore, a new scheme is proposed to address this problem. Summary of the Invention

[0007] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a laser particle size analyzer for detecting the particle size of pharmaceutical powder. By using an air supply component and an electrostatic elimination component to maintain a stable environment within the concentrated drop trough, the agglomeration of internal pharmaceutical particles due to mutual friction is avoided, thereby achieving accurate detection.

[0008] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a laser particle size analyzer for detecting the particle size of pharmaceutical powder, comprising an instrument body and a test platform. The surface of the test platform is provided with a feed inlet. Below the feed inlet, a feed hopper, a concentrated drop trough, a sample cup, and a laser particle size detection component disposed on one side of the sample cup are arranged in sequence. At least one electrostatic elimination component is provided in the concentrated drop trough. The electrostatic elimination component includes a housing connected to the top wall of the concentrated drop trough by a connecting column. A negative ion generator is provided inside the housing. The negative ion generator is fixedly connected to the housing by a bracket. An emission end is provided at the bottom of the negative ion generator. An emission port is provided at the bottom of the housing. An air supply component is provided above the electrostatic elimination component.

[0009] By adopting the above technical solution, the material is fed through the inlet on the surface of the test stand. The material falls into the centralized dropping trough through the hopper. The centralized dropping trough is equipped with a collecting scraper and a rotating rod for collecting the material particles falling into the trough. The rotating rod rotates and drives the collecting scraper to scrape the material in the centralized dropping trough into the sample cup. When the material falls into the centralized dropping trough, the output of the air supply component is controlled, and power is simultaneously input to the negative ion generator. The negative ion generator outputs through the emitter end at the bottom of the negative ion generator and the emitter port at the bottom of the shell. The internal drug particles agglomerate due to mutual friction, which maintains the stability of the internal detection environment and improves the accuracy of the detection effect.

[0010] The present invention is further configured such that: the air supply component includes a blower disposed in the instrument body, the output end of the blower is provided with a connecting conduit, the other end of the connecting conduit is connected to a conveying conduit, the centralized descent trough is provided with a slot, the conveying conduit is fixed at the slot, one end of the conveying conduit extending into the centralized descent trough is fixedly connected to a connecting pipe, and both ends of the connecting pipe are provided with air outlet pipes.

[0011] By adopting the above technical solution, the blower is controlled to start, and the air is discharged through the connecting duct, the conveying duct, the connecting pipe, and finally the outlet pipe. The conveying duct is fixed at the slot opening and sealed to the slot opening.

[0012] The present invention is further configured such that: a fixing frame is provided on the outside of the housing, an air supply channel is formed between the outside of the housing and the fixing frame, and the air outlet pipe is provided corresponding to the air supply channel.

[0013] By adopting the above technical solution, the negative ions generated by the negative ion generator need to acquire electrons from molecules or atoms in the air. An air supply channel is formed between the fixed frame set on the outside of the shell and the shell. Air is delivered through the air supply channel to realize the generation of negative ions.

[0014] The present invention is further configured such that a control valve is provided on the conductive pipe.

[0015] By adopting the above technical solution, the opening and closing of the delivery conduit are controlled by a control valve.

[0016] The present invention is further configured such that: the negative ion generator is connected to an input power supply via a wire, and the input power supply is located inside the main body of the instrument.

[0017] By adopting the above technical solution, the input power supply is electrically connected to the negative ion generator through a wire.

[0018] The present invention is further configured such that the conductive tube is offset from the housing.

[0019] In summary, this utility model has the following beneficial effects: By combining air supply components with electrostatic elimination components, the environment inside the centralized drop tank is kept stable, preventing the internal drug particles from rubbing against each other and causing agglomeration, thereby achieving the effect of accurate detection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 for Figure 1 Enlarged schematic diagram of part A.

[0021] In the diagram: 1. Main body of the instrument; 2. Test platform; 3. Centralized drop trough; 4. Sample cup; 5. Feed inlet; 6. Feed hopper; 7. Blower; 8. Laser particle size detection component; 9. Conductor pipe; 10. Air outlet pipe; 11. Conveying conduit pipe; 12. Connecting conduit pipe; 13. Air supply channel; 14. Emitter; 15. Housing; 16. Fixture; 17. Emitter; 18. Negative ion generator. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0023] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., 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 element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "set up / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The present invention will now be described in detail with reference to the accompanying drawings.

[0026] A laser particle size analyzer for detecting the particle size of pharmaceutical powder, such as Figure 1-3 As shown, the instrument includes a main body 1 and a test platform 2. The surface of the test platform 2 is provided with a feed inlet 5. Below the feed inlet 5, a feeding hopper 6, a centralized drop trough 3, a sample cup 4, and a laser particle size detection component 8 disposed on one side of the sample cup 4 are arranged in sequence. At least one static elimination component is provided in the centralized drop trough 3. The static elimination component includes a housing 15 connected to the top wall of the centralized drop trough 3 through a connecting column. A negative ion generator 18 is disposed inside the housing 15. The negative ion generator 18 is fixedly connected to the housing 15 through a bracket. An emission end 14 is provided at the bottom of the negative ion generator 18. An emission port 17 is provided at the bottom of the housing 15. An air supply component is provided above the static elimination component.

[0027] The air supply assembly includes a blower 7 installed inside the instrument body 1. The output end of the blower 7 is provided with a connecting conduit 12. The other end of the connecting conduit 12 is connected to a conveying conduit 11. The centralized drop trough 3 has a slot through it. The conveying conduit 11 is fixed at the slot. One end of the conveying conduit 11 that extends into the centralized drop trough 3 is fixedly connected to a connecting pipe 9. Both ends of the connecting pipe 9 are connected to air outlet pipes 10.

[0028] A fixing frame 16 is provided on the outside of the housing 15, and an air supply channel 13 is formed between the outside of the housing 15 and the fixing frame 16. The air outlet pipe 10 is provided corresponding to the air supply channel 13. A control valve is provided on the conductive pipe 9. The negative ion generator 18 is connected to the input power supply through a wire. The input power supply is located inside the instrument body 1. The conductive pipe 9 is offset from the housing 15.

[0029] Working principle: The material is fed through the feed port 5 on the surface of the test stand 2. The material falls into the centralized dropping trough 3 through the feed hopper 6. The centralized dropping trough 3 is equipped with a collecting scraper and a rotating rod to collect the material particles falling into the centralized dropping trough 3. The rotating rod drives the collecting scraper to scrape the material in the centralized dropping trough into the sample cup 4. When the material falls into the centralized dropping trough, the output of the air supply component is controlled, and the power supply is simultaneously input to the negative ion generator 18. The negative ion generator outputs through the emitter 14 at the bottom of the negative ion generator 18 and the emitter 17 at the bottom of the shell 15. The internal drug particles agglomerate due to mutual friction, which maintains the stability of the internal detection environment and improves the accuracy of the detection effect.

[0030] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A laser particle size analyzer for detecting the particle size of pharmaceutical powder, comprising an instrument body (1) and a test stage (2), wherein a feed inlet (5) is provided on the surface of the test stage (2), and a feed hopper (6), a concentrated drop trough (3), a sample cup (4), and a laser particle size detection component (8) disposed on one side of the sample cup (4) are arranged in sequence below the feed inlet (5), characterized in that: At least one static elimination component is provided in the centralized drop trough (3). The static elimination component includes a housing (15) connected to the top wall of the centralized drop trough (3) via a connecting column. A negative ion generator (18) is provided inside the housing (15). The negative ion generator (18) is fixedly connected to the housing (15) via a bracket. An emission end (14) is provided at the bottom of the negative ion generator (18). An emission port (17) is provided at the bottom of the housing (15). An air supply component is provided above the static elimination component.

2. The laser particle size analyzer for detecting the particle size of pharmaceutical powder according to claim 1, characterized in that: The air supply assembly includes a blower (7) installed in the instrument body (1). The output end of the blower (7) is provided with a connecting conduit (12). The other end of the connecting conduit (12) is connected to a conveying conduit (11). The centralized descent trough (3) has a slot through it. The conveying conduit (11) is fixed at the slot. One end of the conveying conduit (11) that extends into the centralized descent trough (3) is fixedly connected to a connecting pipe (9). Both ends of the connecting pipe (9) are connected to air outlet pipes (10).

3. A laser particle size analyzer for detecting the particle size of pharmaceutical powder according to claim 2, characterized in that: A fixing frame (16) is provided on the outside of the housing (15), and an air supply channel (13) is formed between the outside of the housing (15) and the fixing frame (16). The air outlet pipe (10) is provided corresponding to the air supply channel (13).

4. A laser particle size analyzer for detecting the particle size of pharmaceutical powder according to claim 2, characterized in that: A control valve is provided on the guide pipe (9).

5. A laser particle size analyzer for detecting the particle size of pharmaceutical powder according to claim 1, characterized in that: The negative ion generator (18) is connected to an input power supply via a wire, and the input power supply is located inside the instrument body (1).

6. A laser particle size analyzer for detecting the particle size of pharmaceutical powder according to claim 2, characterized in that: The conductive tube (9) is offset from the housing (15).

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