Double-lens laser particle analyzer with automatic calibration function

Abstract

The invention discloses a dual-lens laser particle analyzer with an automatic calibration function. The dual-lens laser particle analyzer comprises a lead-in assembly, a shaking assembly and a mist brushing assembly, the introduction assembly is used for mixing and introducing to-be-measured particles and a water source, the shaking assembly is used for continuously shaking the particles of a to-be-measured mixed solution so as to ensure that the particles are uniformly dispersed, and the mist brushing assembly is used for brushing away mist which is generated on a lens due to too high humidity and interferes with the laser measurement degree. Through the combination of the first fixing plate, the first fixing shaft, the fixing ring and the torsional spring, the first sample pool can flexibly shake within a certain range, the motor drives the reciprocating lead screw to drive the toothed plate to move, the first sample pool can shake and swing, and through the continuous and diverse movement mode, the detection accuracy is improved. The uniform distribution of the particles in the solution is ensured, the interference of particle precipitation or aggregation on the measurement result is avoided, and the accuracy of measuring the particle size by the laser particle analyzer is obviously improved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser particle size analyzers, and in particular to a dual-lens laser particle size analyzer with an automatic calibration function. Background Art

[0002] A particle size analyzer is an instrument that uses physical methods to measure the size and distribution of solid particles. It can be divided into nano particle size analyzers, laser particle size analyzers, single particle light resistance method particle size analyzers, image particle size analyzers, etc., and laser particle size analyzers can be further divided into single-lens and dual-lens types.

[0003] For current laser particle size analyzers, such as an oblique incidence laser particle size analyzer disclosed in Chinese Patent Publication No. "CN102590051B", during the detection process, the sample is not fully dispersed in the medium, which may cause particle aggregation, thus affecting the accuracy of the measurement results and causing deviations in the measured particle size distribution. Accordingly, the present invention proposes a dual-lens laser particle size analyzer with an automatic calibration function. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies existing in the prior art, and to propose a dual-lens laser particle size analyzer with an automatic calibration function.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A dual-lens laser particle size analyzer with an automatic calibration function, comprising an introduction component, a shaking component, and a fog brushing component; The introduction component is used to mix and introduce the particles to be measured and water. The introduction component includes a working box and a stirring box fixedly connected to the top of the working box; A detection chamber is fixedly connected inside the working box. Through holes are opened on the detection chamber, and lenses are fixedly connected to both sides of the through holes; The shaking component is used to continuously shake the particles in the mixed solution to be measured to ensure their uniform dispersion. The shaking component includes two first fixing plates fixedly connected to the bottom of the through hole; A fixing box is fixedly connected to the top of the detection chamber, and a transmission component for continuously shaking and swinging the shaking component is arranged inside the fixing box; The fog brushing component is used to brush off the fog that interferes with the laser measurement degree on the lens due to excessive humidity. The fog brushing component includes sliding grooves opened on both sides of the fixing box.

[0006] Preferably, a first fixed shaft is fixedly connected between the two first fixed plates. A fixing ring is arranged on the outer side of the first fixed shaft. A torsion spring is fixedly connected between the inner wall of the fixing ring and the first fixed shaft. The top of the fixing ring is fixedly connected with a first sample cell. Both sides of the first sample cell and the detection chamber are communicated with each other through folding hoses. One side of the top of the first sample cell is fixedly connected with a second fixed plate, and one side of the second fixed plate is fixedly connected with a second fixed shaft.

[0007] Preferably, the transmission assembly includes a motor fixedly connected to one side of the fixed box. A reciprocating lead screw rotatably connected inside the fixed box and fixedly connected to the driving end of the motor. A first bevel gear is fixedly connected to one side of the reciprocating lead screw. A second bevel gear is rotatably connected to one side of the fixed box close to the first bevel gear. A sector gear is fixedly connected to one side of the second bevel gear. A toothed plate is slidably connected through the fixed box close to the sector gear and extends into the through hole. The toothed plate slides through the detection chamber and extends into the through hole. One side of the toothed plate close to the second fixed plate is rotatably connected to the second fixed shaft.

[0008] Preferably, a lead screw nut is sleeved on the outer side of the reciprocating lead screw. Slide bars fixedly connected to both sides of the lead screw nut and slidably connected to the two chutes respectively are fixedly connected to both sides of the lead screw nut. Extension plates are fixedly connected to one side of the two slide bars. Demisting scrapers are fixedly connected to the bottoms of the two extension plates.

[0009] Preferably, a stirring controller is fixedly arranged on the top of the stirring box. An ultrasonic disperser connected to the stirring box is fixedly connected to one side of the working box. The ultrasonic disperser is connected to the first sample cell through a water inlet pipe.

[0010] Preferably, a second sample cell is fixedly arranged at the bottom of the detection chamber. The first sample cell and the second sample cell are communicated with each other through a diversion pipe. The second sample cell and the ultrasonic disperser are communicated with each other through a water outlet pipe.

[0011] Preferably, a block fixedly connected to the detection chamber is fixedly connected inside the working box. A rear detection array is fixedly connected to the top of the block. A dual camera is fixedly connected to one side of the working box far from the block. A front detection array is fixedly connected to the top of the dual camera. A laser is fixedly connected between the detection chamber and the front detection array.

[0012] Preferably, the first bevel gear and the second bevel gear mesh with each other, and the sector gear and the toothed plate mesh with each other.

[0013] The present invention has the following beneficial effects: 1. By setting up an import component, through the reasonable layout of a stop block, a backward detection array, a dual camera, a forward detection array, a laser, etc., each component can work together during measurement, reducing external interference. The lenses fixedly connected to both sides of the through hole on the detection chamber, combined with the stable structure of the detection chamber, ensure that the laser can stably pass through the sample cell during measurement, avoiding laser measurement deviation caused by structural shaking or instability, thus providing a stable environment for measurement and ensuring the reliability of the measurement results.

[0014] 2. By setting up a shaking component, through the combination of a first fixing plate, a first fixed shaft, a fixing ring, and a torsion spring, the first sample cell can flexibly shake within a certain range. The motor drives the reciprocating lead screw, which in turn drives the toothed plate to move, enabling the first sample cell to not only shake but also swing. This continuous and diverse movement mode ensures the uniform distribution of particles in the solution, avoiding interference with the measurement results caused by particle precipitation or aggregation, and significantly improving the accuracy of measuring particle size by the laser particle size analyzer.

[0015] 3. By setting up a brush - fog component, it can automatically brush the fog on the lens during the operation of the instrument. This avoids the situation of frequently shutting down the machine to clean the lens due to fog interference, reducing the maintenance workload and downtime. For example, in some working environments with high humidity, traditional laser particle size analyzers may require operators to manually clean the lens at regular intervals, while the brush - fog component of this instrument can automatically complete this task, greatly improving the use efficiency of the instrument and reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is the front - view structural schematic diagram of a dual - lens laser particle size analyzer with an automatic calibration function proposed by the present invention; Figure 2 FIG. is the structural schematic diagram inside the working box of the present invention; Figure 3 FIG. is the side - view structural schematic diagram of the working box of the present invention; Figure 4 FIG. is the structural schematic diagram of the detection chamber of the present invention; Figure 5 FIG. is the structural schematic diagram inside the through hole of the present invention; Figure 6 FIG. is the structural schematic diagram inside the fixed box of the present invention; Figure 7 FIG. is the structural schematic diagram of the transmission component of the present invention; Figure 8 is Figure 6 the enlarged structural schematic diagram of A in Figure 9 is Figure 6 the enlarged structural schematic diagram of B in Figure 10 For Figure 7 the enlarged structural schematic diagram of C in

[0017] In the figure: 1 working box, 2 stirring box, 3 stirring controller, 4 ultrasonic disperser, 5 water inlet pipe, 6 water outlet pipe, 7 detection chamber, 8 fixing box, 9 through hole, 10 lens, 11 first fixing plate, 12 first fixing shaft, 13 fixing ring, 14 torsion spring, 15 first sample cell, 16 folding hose, 17 second fixing plate, 18 second fixing shaft, 19 motor, 20 reciprocating lead screw, 21 first bevel gear, 22 second bevel gear, 23 sector gear, 24 toothed plate, 25 lead screw nut, 26 chute, 27 slide bar, 28 extension plate, 29 defogging scraper, 30 water flow sensor, 31 second sample cell, 32 diversion pipe, 33 block, 34 backward detection array, 35 dual camera, 36 forward detection array, 37 laser. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Embodiment 1:

[0019] Refer to Figures 1 - 10 , a dual-lens laser particle size analyzer with an automatic calibration function, including an introduction component, a shaking component and a defogging component; The introduction component is used to mix and introduce the particles to be measured and the water source. The introduction component includes a working box 1 and a stirring box 2 fixedly connected to the top of the working box 1; A detection chamber 7 is fixedly connected inside the working box 1. Through holes 9 are opened on the detection chamber 7, and lenses 10 are fixedly connected to both sides of the through holes 9; The shaking component is used to continuously shake the particles of the mixed solution to be measured to ensure their uniform dispersion. The shaking component includes two first fixing plates 11 fixedly connected to the bottom of the through hole 9; A fixing box 8 is fixedly connected to the top of the detection chamber 7, and a transmission component for continuously shaking and swinging the shaking component is arranged inside the fixing box 8; The defogging component is used to brush off the mist that interferes with the laser measurement degree on the lens 10 due to excessive humidity. The defogging component includes chutes 26 opened on both sides of the fixing box 8; A first fixed shaft 12 is fixedly connected between the two first fixed plates 11, a fixed ring 13 is arranged on the outer side of the first fixed shaft 12, a torsion spring 14 is fixedly connected between the inner wall of the fixed ring 13 and the first fixed shaft 12, a first sample pool 15 is fixedly connected to the top of the fixed ring 13, both sides of the first sample pool 15 and the detection chamber 7 are interconnected through a folded hose 16, a second fixed plate 17 is fixedly connected to one side of the top of the first sample pool 15, and a second fixed shaft 18 is fixedly connected to one side of the second fixed plate 17; The transmission assembly includes a motor 19 fixedly connected to one side of the fixed box 8, a reciprocating screw 20 fixedly connected to the driving end of the motor 19 is rotatably connected inside the fixed box 8, a first bevel gear 21 is fixedly connected to one side of the reciprocating screw 20, a second bevel gear 22 is rotatably connected to one side of the fixed box 8 close to the first bevel gear 21, a sector gear 23 is fixedly connected to one side of the second bevel gear 22, a tooth plate 24 is slidably connected to one side of the fixed box 8 close to the sector gear 23, the tooth plate 24 slides through the detection chamber 7 and extends to the inside of the through hole 9, and a side of the tooth plate 24 close to the second fixed plate 17 is rotatably connected to the second fixed shaft 18; The first bevel gear 21 and the second bevel gear 22 are meshed with each other, and the sector teeth 23 and the tooth plate 24 are meshed with each other; In this embodiment, the particles to be tested and an appropriate amount of water are carefully added to the mixing box 2. The mixing controller 3 installed on the top of the mixing box 2 has a multi-speed adjustment function. After starting, it can stir at a preset speed to initially mix the particles and the water source, promote the initial dispersion of the particles in the water, and avoid the formation of large particle clusters. The ultrasonic disperser 4 on one side of the working box 1 is connected to the mixing box 2 by a sealed pipe. Turn on the ultrasonic disperser 4, use the cavitation effect generated by ultrasound in the liquid, strongly impact the particle clusters, further break up the agglomerated particles, and provide a uniformly dispersed raw material basis for subsequent precise measurement; Further, the mixed solution after stirring and ultrasonic dispersion flows into the first sample pool 15 through the water inlet pipe 5. When the mixed solution passes through the detection of the water flow sensor 30, the motor 19 installed on one side of the fixed box 8 is powered on and started, and its driving end is firmly connected to the reciprocating screw 20, ensuring that the rotational power output by the motor is stably and efficiently transmitted to the reciprocating screw 20. When the reciprocating screw 20 rotates at a high speed, the first bevel gear 21 fixed on one side thereof rotates synchronously, and the first bevel gear 21 is meshed with the second bevel gear 22. Due to the transmission characteristics of the bevel gears, the change of power direction and smooth transmission are realized, driving the second bevel gear 22 to rotate, and the second bevel gear 22 drives the coaxially fixed sector gear 23 to rotate, and the sector gear 23 is tightly meshed with the tooth plate 24, converting the rotational motion into a linear reciprocating motion of the tooth plate 24 in the fixed box 8; Further, the toothed plate 24 slides through the detection chamber 7 and extends into the through hole 9, and is rotatably connected to the second fixed shaft 18 on the second fixing plate 17 through a bearing. The linear motion of the toothed plate 24 is converted into the swing of the first sample cell 15. A fixing ring 13 is sleeved outside the first fixed shaft 12 between the two first fixing plates 11, and a torsion spring 14 is installed between the inner wall of the fixing ring 13 and the first fixed shaft 12. When the first sample cell 15 swings, an elastic restoring force is provided to make it swing naturally. This combined motion of swinging and shaking makes the mixed solution to be measured in the first sample cell 15 continuously tumble, ensuring uniform dispersion of particles. In addition, the solution in the first sample cell 15 flows into the second sample cell 31 through the diversion tube 32. The diameter and length of the diversion tube 32 are customized according to the requirements of the solution flow rate and velocity to ensure a smooth transition of the solution. The solution in the second sample cell 31 then flows back to the ultrasonic disperser 4 through the water outlet pipe 6, forming a circulation loop. During the circulation process, the solution continuously receives ultrasonic dispersion, further maintaining the uniform dispersion state of the particles and providing stable and consistent sample conditions for multiple measurements. Embodiment 2:

[0020] Refer to Figures 4 - 7 , compared with Embodiment 1, in this embodiment, a lead screw nut 25 is sleeved on the outer thread of the reciprocating lead screw 20. Both sides of the lead screw nut 25 are fixedly connected with slide bars 27 that are respectively slidably connected between the two chutes 26. One side of each of the two slide bars 27 is fixedly connected with an extension plate 28, and the bottom of each of the two extension plates 28 is fixedly connected with a defogging scraper 29.

[0021] A stirring controller 3 is fixedly arranged on the top of the stirring tank 2. One side of the working tank 1 is fixedly connected with an ultrasonic disperser 4 that is communicated with the stirring tank 2. The ultrasonic disperser 4 is connected to the first sample cell 15 through a water inlet pipe 5.

[0022] A second sample cell 31 is fixedly arranged at the bottom of the detection chamber 7. The first sample cell 15 is communicated with the second sample cell 31 through a diversion tube 32, and the second sample cell 31 is communicated with the ultrasonic disperser 4 through a water outlet pipe 6.

[0023] A stop block 33 fixedly connected to the detection chamber 7 is fixedly connected inside the working tank 1. A rear detection array 34 is fixedly connected to the top of the stop block 33. A dual camera 35 is fixedly connected to the side of the working tank 1 away from the stop block 33. A front detection array 36 is fixedly connected to the top of the dual camera 35. A laser 37 is fixedly connected between the detection chamber 7 and the front detection array 36.

[0024] In this embodiment, when the motor 19 drives the reciprocating lead screw 20 to rotate, the lead screw nut 25 makes a linear reciprocating motion along the reciprocating lead screw 20 by virtue of its thread fit with the reciprocating lead screw 20. The threaded connection between the lead screw nut 25 and the reciprocating lead screw 20 ensures smooth movement. The slide bars 27 fixedly connected to both sides of the lead screw nut 25 slide smoothly in the chutes 26 opened on both sides of the fixed box 8. The inner walls of the chutes 26 are smooth, and the gap between the slide bars 27 and the chutes 26 is controlled within an extremely small range to ensure that the movement is free of deviation and jamming. The extension plate 28 connected to one side of the slide bar 27 drives the defogging scraper 29 at the bottom to move synchronously.

[0025] Furthermore, the defogging scraper 29 is made of a special material that is soft and highly absorbent. During movement, it closely adheres to the surface of the lens 10, can effectively scrape off the fog while avoiding scratching the lens. When the instrument operates in a high-humidity environment, the brush fog assembly is automatically activated, effectively keeping the lens clear, reducing the frequency of manual cleaning, and significantly reducing the maintenance cost.

[0026] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A dual-lens laser particle size analyzer with automatic calibration function, comprising an introduction component, a shaking component and a mist brushing component, characterized in that: The introduction component is used to mix and introduce the particles to be tested and the water source, and the introduction component comprises a working box (1) and a stirring box (2) fixedly connected to the top of the working box (1); The working box (1) is fixedly connected to a detection chamber (7) inside, the detection chamber (7) is provided with a through hole (9), and lenses (10) are fixedly connected to both sides of the through hole (9); The shaking assembly is used to continuously shake particles of the mixed solution to be tested to ensure uniform dispersion thereof, and the shaking assembly comprises two first fixing plates (11) fixedly connected to the bottom of the through hole (9); A fixing box (8) is fixedly connected to the top of the detection chamber (7), and a transmission component for allowing the shaking component to continuously shake and swing is arranged inside the fixing box (8); The mist brushing assembly is used to brush away mist on the lens (10) that interferes with laser measurement due to excessive humidity, and the mist brushing assembly comprises slide grooves (26) disposed on both sides of the fixing box (8).

2. The dual-lens laser particle size analyzer with automatic calibration function according to claim 1, characterized in that: A first fixed shaft (12) is fixedly connected between the two first fixed plates (11), a fixed ring (13) is arranged on the outer side of the first fixed shaft (12), a torsion spring (14) is fixedly connected between the inner wall of the fixed ring (13) and the first fixed shaft (12), a first sample pool (15) is fixedly connected to the top of the fixed ring (13), both sides of the first sample pool (15) and the detection chamber (7) are interconnected through a foldable hose (16), a second fixed plate (17) is fixedly connected to one side of the top of the first sample pool (15), and a second fixed shaft (18) is fixedly connected to one side of the second fixed plate (17).

3. The dual-lens laser particle size analyzer with automatic calibration function according to claim 2, characterized in that: The transmission assembly comprises a motor (19) fixedly connected to one side of a fixed box (8); a reciprocating screw (20) fixedly connected to a driving end of the motor (19) is rotatably connected inside the fixed box (8); a first bevel gear (21) is fixedly connected to one side of the reciprocating screw (20); a second bevel gear (22) is rotatably connected to a side of the fixed box (8) close to the first bevel gear (21); a sector gear (23) is fixedly connected to one side of the second bevel gear (22); a tooth plate (24) is slidably connected to a side of the fixed box (8) close to the sector gear (23); the tooth plate (24) slidably passes through the detection chamber (7) and extends to the inside of the through hole (9); a side of the tooth plate (24) close to the second fixed plate (17) is rotatably connected to the second fixed shaft (18).

4. The dual-lens laser particle size analyzer with automatic calibration function according to claim 3, characterized in that: The outer thread sleeve of the reciprocating screw (20) is provided with a screw nut (25), and both sides of the screw nut (25) are fixedly connected with sliding rods (27) respectively slidably connected to the two sliding grooves (26), and one side of the two sliding rods (27) is fixedly connected with an extension plate (28), and the bottom of the two extension plates (28) is fixedly connected with a demisting scraper (29).

5. The dual-lens laser particle size analyzer with automatic calibration function according to claim 2, characterized in that: A stirring controller (3) is fixedly arranged on the top of the stirring box (2), and an ultrasonic disperser (4) in communication with the stirring box (2) is fixedly connected to one side of the working box (1), and the ultrasonic disperser (4) is connected to the first sample pool (15) via a water inlet pipe (5).

6. The dual-lens laser particle size analyzer with automatic calibration function according to claim 2, characterized in that: A second sample pool (31) is fixedly arranged at the bottom of the detection chamber (7); the first sample pool (15) and the second sample pool (31) are connected via a flow guide pipe (32); and the second sample pool (31) and the ultrasonic disperser (4) are connected via a water outlet pipe (6).

7. The dual-lens laser particle size analyzer with automatic calibration function according to claim 1, characterized in that: A stopper (33) fixedly connected to the detection chamber (7) is fixedly connected inside the working box (1); a rearward detection array (34) is fixedly connected to the top of the stopper (33); a dual camera (35) is fixedly connected to the side of the working box (1) away from the stopper (33); a forward detection array (36) is fixedly connected to the top of the dual camera (35); and a laser (37) is fixedly connected between the detection chamber (7) and the forward detection array (36).

8. The dual-lens laser particle size analyzer with automatic calibration function according to claim 3, characterized in that: The first bevel gear (21) and the second bevel gear (22) are meshed with each other, and the sector teeth (23) and the tooth plate (24) are meshed with each other.

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