Automatic reading device for a particle analysis test by means of a densimeter

Abstract

The utility model belongs to granule analysis test technical field especially relates to a density gauge method granule analysis test automatic reading device, including base, the upper end of base is provided with support frame, the lower end of support frame is provided with a plurality of graduated cylinders, horizontal shift subassembly, the drive end of horizontal shift subassembly is provided with slide frame, the utility model discloses a complete automation process is formed through horizontal shift subassembly, detection subassembly, water injection subassembly and positioning subassembly cooperation, after the test starts, does not need manual duty, solves the problem that traditional manual reading needs special person to be on 8 key time points (1, 2, 5, 15, 30, 60, 120, 1440 minutes) duty, and a single person can control simultaneously multiple tests, and the manpower consumption is reduced significantly.

Description

Technical Field

[0001] This utility model belongs to the field of particle analysis testing technology, and in particular relates to an automatic reading device for particle analysis testing using a densitometer method. Background Technology

[0002] Particle size analysis is a core component of geotechnical engineering investigation, and its results directly determine the scientific validity of engineering design decisions such as foundation treatment, slope stability analysis, and seismic liquefaction assessment. The Type A densitometer method, a classic method specified in the "Standard for Geotechnical Testing Methods," is based on the Stokes sedimentation principle. It calculates particle size distribution by measuring the suspension density at different time points. Due to its low equipment cost and standardized operation, it is widely used in grassroots laboratories and large-scale soil survey projects.

[0003] However, as engineering projects place increasing demands on experimental efficiency and data accuracy, the technical limitations of this method have become increasingly apparent. In traditional experimental procedures, from grinding and sieving, to suspension stirring and densitometer readings, the entire process relies on manual operation. The 24-hour settling wait, coupled with multiple stages of manual intervention, often results in experimental cycles exceeding 48 hours, leading to extremely high labor intensity. More importantly, manual operation is prone to multiple errors:

[0004] (i) Eight key reading time points (1, 2, 5, 15, 30, 60, 120, and 1440 minutes) require dedicated personnel for monitoring, as timing deviations can easily lead to missed or premature readings. (ii) When reading density by visual inspection, subjective differences in meniscus judgment can cause reading errors. (iii) When injecting 1000 mL of suspension into the vector cylinder, human parallax can easily lead to insufficient or excessive volume, affecting the accuracy of suspension density. (iv) Experimental data needs to be manually recorded and entered into the computer, which can easily result in recording errors and transcription mistakes. Although modern equipment such as laser particle size analyzers can achieve automated measurement, the data based on the principle of light scattering cannot be directly compared with the density meter method, and the equipment purchase cost is high, making it difficult to popularize in grassroots laboratories and routine testing. Therefore, we propose an automatic reading device for particle analysis experiments using the density meter method. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned technical problems by providing an automatic reading device for particle analysis using a densitometer, which achieves the effect of accurately adding suspension to a graduated cylinder and automatically reading the data.

[0006] In view of this, the present invention provides an automatic reading device for particle analysis using a densitometer method, comprising a base, a support frame at the upper end of the base, a plurality of measuring cylinders at the lower end of the support frame, a transverse moving assembly, a sliding frame at the drive end of the transverse moving assembly, and a detection assembly, the detection assembly including a second servo motor disposed below the sliding frame, a second lead screw mounted on the output end of the second servo motor, a fixing strip welded to the lower end of the sliding frame, an L-shaped support rod disposed on one side of the fixing strip, a second lead screw sleeve welded to the upper end of the L-shaped support rod, and the second lead screw and the second lead screw sleeve being threaded together. The connection includes a matrix laser sensor at the lower end of the L-shaped support rod, a housing on the other side of the fixing strip, a signal amplifier inside the housing, a water injection assembly including a water tank located above the sliding frame, a water pump inside the water tank, a water pipe connected to the outlet of the water pump, a rotating seat rotatably mounted on one end of the L-shaped support rod, a probe at the lower end of the rotating seat, and the end of the water pipe located below the rotating seat. A positioning assembly includes a limiting strip located below the base, with two limiting strips symmetrically arranged on both sides of the measuring cylinder.

[0007] Furthermore, the lateral movement assembly includes a first servo motor disposed above the support frame, a first lead screw installed at the output end of the first servo motor, a first lead screw sleeve disposed in the middle of the sliding frame, the first lead screw and the first lead screw sleeve being threadedly connected, and limit rods welded to both sides of the upper end of the support frame, the two limit rods being slidably connected to the sliding frame respectively.

[0008] Furthermore, the matrix laser sensor is detachably connected to the lower end of the L-shaped support rod by means of bolt fixing, and the second lead screw sleeve is slidably connected to the fixing strip.

[0009] Furthermore, the signal output terminal of the matrix laser sensor is connected to an optical fiber, and the other end of the optical fiber is connected to the signal input terminal of the signal amplifier.

[0010] Furthermore, two probes are provided, and the end of the water pipe is positioned below the probes.

[0011] Furthermore, the inner side of the limiting strip is provided with a groove, and the grooves are evenly distributed. The limiting strip is slidably connected to the support frame.

[0012] Furthermore, springs are fixedly installed on both sides of the limiting strip, and the springs are arranged symmetrically.

[0013] Furthermore, the lower end of the L-shaped support rod is rotatably connected to the rotating seat via a pin on the side closest to the rotating seat.

[0014] The beneficial effects of this utility model are:

[0015] By combining the transverse component, detection component, water injection component, and positioning component, a complete automated process is formed. After the test starts, no manual supervision is required, solving the problem that traditional manual reading requires a dedicated person to be on duty at 8 key time points (1, 2, 5, 15, 30, 60, 120, 1440 minutes). A single person can manage multiple sets of tests at the same time, significantly reducing manpower consumption.

[0016] In the detection component, the matrix laser sensor, in conjunction with the second servo motor, can dynamically follow the sedimentation of the densitometer, ensuring that the reading time is accurately matched with the position of the densitometer and eliminating parallax errors caused by manual visual readings. The water injection component achieves precise water injection through the collaboration of the probe and the water pump, avoiding the problem of inaccurate suspension volume caused by judgment deviations during manual water injection, thereby ensuring data accuracy and meeting the requirements of high-precision engineering construction for particle analysis tests.

[0017] Multiple measuring cylinders are installed at the lower end of the support frame. In conjunction with the horizontal movement component, the detection and water injection components switch between different measuring cylinders, allowing multiple sets of parallel tests to be carried out simultaneously. Compared with the traditional method of manually processing one set of tests at a time, which often takes more than 48 hours, this significantly shortens the total test time and improves the detection efficiency of grassroots laboratories and large-scale soil survey projects.

[0018] The positioning component precisely positions the graduated cylinder, ensuring that the relative positions of the detection and water injection components and the graduated cylinder are consistent in each test, thereby reducing operational deviations and further improving the accuracy of the test. Attached Figure Description

[0019] Figure 1 This is a first-view structural schematic diagram of an automatic reading device for particle analysis using a densitometer method, as proposed in this utility model.

[0020] Figure 2 This is a second-view structural schematic diagram of an automatic reading device for particle analysis using a densitometer method, as proposed in this utility model.

[0021] Figure 3 This is a schematic diagram of the transverse movement component and the detection component of an automatic reading device for particle analysis using a densitometer method, as proposed in this utility model.

[0022] Figure 4 This utility model proposes an automatic reading device for particle analysis using a densitometer method. Figure 3 Enlarged view of point A;

[0023] Figure 5 This utility model proposes an automatic reading device for particle analysis using a densitometer method. Figure 3 Enlarged view of point B;

[0024] Figure 6This is a schematic diagram of the positioning component structure of an automatic reading device for particle analysis using a densitometer method, as proposed in this utility model.

[0025] The markings in the diagram are as follows:

[0026] 1. Base; 11. Support frame; 12. First servo motor; 13. First lead screw; 14. Sliding frame; 15. Limiting rod; 16. Water tank; 17. Measuring cylinder; 18. First lead screw sleeve; 2. Second servo motor; 21. Second lead screw; 22. Second lead screw sleeve; 23. Fixing strip; 24. Housing; 25. Fiber optic cable; 26. L-shaped support rod; 27. Matrix laser sensor; 3. Rotating seat; 31. Probe; 32. Water pipe; 33. Limiting strip; 34. Spring; 35. Groove. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0028] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0029] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0030] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, 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 application and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0031] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0032] Reference Figures 1 to 6An automatic reading device for particle analysis using a densitometer method includes a base 1, a support frame 11 at the upper end of the base 1, multiple measuring cylinders 17 at the lower end of the support frame 11, a transverse movement assembly, a sliding frame 14 at the drive end of the transverse movement assembly, and a detection assembly. The detection assembly includes a second servo motor 2 located below the sliding frame 14, a second lead screw 21 mounted at the output end of the second servo motor 2, a fixing strip 23 welded to the lower end of the sliding frame 14, an L-shaped support rod 26 on one side of the fixing strip 23, a second lead screw sleeve 22 welded to the upper end of the L-shaped support rod 26, and a threaded connection between the second lead screw 21 and the second lead screw sleeve 22. A matrix laser sensor 27 is provided at the lower end of the L-shaped support rod 26. A housing 24 is provided on the other side of the fixing strip 23. A signal amplifier is provided in the inner cavity of the housing 24. A water injection assembly is provided, which includes a water tank 16 located above the sliding frame 14. A water pump is provided in the inner cavity of the water tank 16. A water pipe 32 is connected to the outlet end of the water pump. A rotating seat 3 is rotatably mounted on one end of the L-shaped support rod 26. A probe 31 is provided at the lower end of the rotating seat 3. The end of the water pipe 32 is located below the rotating seat 3. A positioning assembly is provided, which includes a limiting strip 33 located below the base 1. Two limiting strips 33 are symmetrically arranged on both sides of the measuring cylinder 17.

[0033] This invention integrates the transverse component, detection component, and water injection component onto the support frame 11. The positioning component secures the measuring cylinder 17, ensuring the relative positional accuracy between each functional component and the measuring cylinder 17. During operation, after the tester pre-processes the measuring cylinder 17, the measuring cylinder 17 is placed in the position defined by the positioning component. The water pump in the water injection component is started by the controller, and water from the water tank 16 is injected into the measuring cylinder 17 through the water pipe 32. Simultaneously, the second servo motor 2 drives the L-shaped support rod 26 to move downward, causing the rotating seat 3 to move to the upper edge of the measuring cylinder 17. The probe 31 at the lower end of the rotating seat 3 gradually approaches the water surface as the water level rises. When the water level reaches the 1000mL standard mark, the water conducts through the double probe 31 to form a circuit, triggering the control unit to shut off the water pump, thus completing precise automatic water injection. After water injection is completed, the tester places the densitometer and temperature sensor in the computer program and sets eight key reading time points (1, 2, 5, 15, 30, 60, 120, and 1440 minutes). Thirty seconds before the reading time, the first servo motor 12 in the transverse component drives the first lead screw 13 to rotate, causing the sliding frame 14 to move horizontally along the support frame 11, sending the detection component above the target measuring cylinder 17. Subsequently, the second servo motor 2 of the detection component drives the second lead screw 21 to rotate, causing the L-shaped support rod 26 to move the matrix laser sensor 27 downward until the sensor is in contact with the top of the densitometer. During the densitometer settling process, the second servo motor 2 receives the sensor feedback signal in real time and drives the sensor to move down synchronously with the densitometer to ensure constant contact. When the preset reading time point is reached, the matrix laser sensor 27 collects the position signal of the top of the densitometer, and at the same time, the temperature sensor collects the temperature of the suspension. After the signal is processed, it is transmitted to the host computer, converted into the densitometer reading and automatically saved. Multiple measuring cylinders 17 at the lower end of the support frame 11 can be placed simultaneously and fixed by the positioning component. The transverse component drives the detection component and the water injection component to switch between different measuring cylinders 17 in sequence according to the program setting, realizing parallel water injection, detection and reading of multiple sets of tests. The next set of operations can be started without waiting for the completion of a single set of tests, which greatly shortens the overall test cycle.

[0034] In the example of this application, the transverse component includes a first servo motor 12 disposed above the support frame 11, a first lead screw 13 installed at the output end of the first servo motor 12, a first lead screw sleeve 18 disposed in the middle of the sliding frame 14, the first lead screw 13 being threadedly connected to the first lead screw sleeve 18, and limit rods 15 welded to both sides of the upper end of the support frame 11, the two limit rods 15 being slidably connected to the sliding frame 14 respectively.

[0035] As a preferred example of this utility model, the first servo motor 12 of the transverse component starts after receiving the workstation switching command from the host computer, and the first lead screw 13 at its output end rotates accordingly. Since the first lead screw sleeve 18 in the middle of the sliding frame 14 is threadedly engaged with the first lead screw 13, the rotational motion of the lead screw is converted into the horizontal linear motion of the sliding frame 14. At the same time, the limiting rods 15 on both sides of the upper end of the support frame 11 pass through the sliding frame 14, which guides the movement direction of the sliding frame 14, preventing the sliding frame 14 from deviating or rotating during the transverse movement, and ensuring that the sliding frame 14 can move accurately to the top of the target measuring cylinder 17, realizing the alignment of the detection component, the water injection component and the measuring cylinder 17. The host computer program adjusts the distance between the sliding frame 14 and the target measuring cylinder 17. The rotational speed of the first servo motor 12: When the distance is far, the motor runs at a higher speed, driving the sliding frame 14 to move quickly and shorten the station switching time; when approaching the target measuring cylinder 17, the motor speed decreases and the sliding frame 14 moves slowly to avoid overshooting due to inertia, ensuring that the final alignment accuracy error is ≤1mm. The sliding connection structure between the limiting rod 15 and the sliding frame 14 can disperse the radial force borne by the first lead screw 13 during transmission, reducing the frictional loss between the lead screw and the lead screw sleeve; at the same time, the two symmetrically arranged limiting rods 15 can balance the force on the sliding frame 14, preventing the sliding frame 14 from tilting or jamming due to uneven force on one side, ensuring smooth and continuous lateral movement, and providing a guarantee for the accuracy of subsequent testing and water injection operations.

[0036] In the example of this application, the matrix laser sensor 27 is detachably connected to the lower end of the L-shaped support rod 26 by means of bolt fixing, and the second lead screw sleeve 22 is slidably connected to the fixing strip 23.

[0037] As a preferred example of this utility model, the second servo motor 2 of the detection component starts after receiving the "approach density meter" command from the host computer. The output end of the second servo motor 2 drives the second lead screw 21 to rotate. The second lead screw sleeve 22 at the upper end of the L-shaped support rod 26 is threadedly engaged with the second lead screw 21, converting the rotational motion of the lead screw into the vertical linear motion of the L-shaped support rod 26. At the same time, the second lead screw sleeve 22 is slidably connected to the fixing strip 23. The fixing strip 23 guides the vertical movement of the L-shaped support rod 26, preventing it from swaying left and right or rotating, and ensuring that the matrix laser sensor 27 can move accurately in the vertical direction. As the matrix laser sensor 27 moves downward with the L-shaped support rod 26, it continuously emits laser light and receives reflected signals. When the sensor moves to the top of the densitometer, the laser is blocked by the densitometer, causing a sudden change in the intensity of the reflected signal. After receiving this signal, the control unit controls the second servo motor 2 to reduce its speed, keeping the sensor in contact with the top of the densitometer. As the densitometer slowly moves downward due to particle settling, the sensor detects the change in the reflected signal in real time and feeds it back to the second servo motor 2, driving the motor to rotate synchronously in the opposite direction, causing the sensor to follow the densitometer downward. When the preset reading time point is reached, the control unit locks the number of rotation steps of the second servo motor 2 at this time, thereby calculating the densitometer reading. The matrix laser sensor 27 is fixed to the lower end of the L-shaped support rod 26 by bolts. When the sensor needs to be calibrated or repaired, the sensor can be removed simply by unscrewing the fixing bolts, without disassembling the L-shaped support rod 26 or other components. During installation, the sensor can be accurately reset through the positioning holes of the bolts, ensuring that the detection accuracy of the sensor is not affected after disassembly and reassembly.

[0038] In the example of this application, the signal output terminal of the matrix laser sensor 27 is connected to an optical fiber cable 25, and the other end of the optical fiber cable 25 is connected to the signal input terminal of the signal amplifier.

[0039] As a preferred example of this utility model, when the matrix laser sensor 27 detects the position of the densitometer, it converts the optical signal into a weak electrical signal, which is transmitted to the signal amplifier through the fiber optic cable 25. Since the fiber optic cable 25 uses optical signal transmission, it is not affected by external electromagnetic interference (such as electromagnetic radiation from other equipment in the laboratory), and the signal attenuation during transmission is minimal, ensuring that the original position signal acquired by the sensor is transmitted to the amplifier completely and without distortion.

[0040] Signal amplification and processing: After receiving the weak electrical signal transmitted by the fiber optic cable 25, the signal amplifier linearly amplifies the signal through its internal amplification circuit, increasing the signal strength to a range that the control unit can recognize. At the same time, the amplifier's built-in filtering module can filter out minor noise in the signal, further optimizing the signal quality and ensuring that the control unit can accurately identify signal changes, avoiding detection errors caused by weak signals or noise interference. The amplified signal is transmitted to the control unit, which compares the signal with a preset threshold to determine the relative position of the sensor and the densitometer. If the signal strength is lower than the threshold, the control unit controls the second servo motor 2 to rotate forward, moving the sensor downward; if the signal strength is higher than the threshold, the control unit controls the second servo motor 2 to rotate in the reverse direction, moving the sensor upward, forming a closed-loop control to ensure that the sensor is always in contact with the top of the densitometer.

[0041] In the example of this application, two probes 31 are provided, and the end of the water pipe 32 is located below the probes 31.

[0042] As a preferred example of this utility model, when the water injection assembly is started, the water pump injects water from the water tank 16 into the measuring cylinder 17 through the water pipe 32. At the same time, the dual probes 31 form a circuit with the control unit and the power supply through wires. In the initial state, the circuit is open (the probes 31 are not in contact with water). When the water level gradually rises to the 1000mL mark, the water acts as a conductive medium to make the dual probes 31 conduct, and a current is generated in the circuit. After the control unit detects the current signal, it immediately sends a command to shut down the water pump and stop the water injection, thereby ensuring that the water injection error is ≤±0.3mL.

[0043] In the example of this application, the inner side of the limiting strip 33 is provided with a groove 35, and the grooves 35 are evenly distributed. The limiting strip 33 is slidably connected to the support frame 11.

[0044] As a preferred example of this utility model, when the tester places the measuring cylinder 17 on the base 1, both sides of the measuring cylinder 17 are embedded in the grooves 35 inside the limiting strips 33. The size of the grooves 35 matches the outer wall size of the measuring cylinder 17, which plays a lateral limiting role for the measuring cylinder 17 and prevents the measuring cylinder 17 from moving in the horizontal direction. At the same time, the grooves 35 are evenly distributed on the limiting strips 33 to ensure that the spacing of multiple measuring cylinders 17 on the base 1 is uniform and matches the station switching distance of the transverse component, avoiding component alignment errors caused by the misalignment of the measuring cylinders 17. When measuring cylinders 17 of different diameters need to be used, the two limiting strips 33 are pulled to move along the sliding track of the support frame 11, thereby adjusting the spacing between the two limiting strips 33 so that the grooves 35 can be adapted to the diameter of the new measuring cylinder 17. After the adjustment is completed, the limiting strips 33 rebound through the spring 34, driving the limiting strips 33 to reset, thereby achieving stable fixation of measuring cylinders 17 of different specifications. In scenarios such as the movement of the transverse component and slight vibration of the equipment, the locking action of the groove 35 on the measuring cylinder 17 can limit the displacement of the measuring cylinder 17, preventing the measuring cylinder 17 from tipping over or deviating from its initial position. This ensures that the matrix laser sensor 27 of the detection component can always be aligned with the densitometer, and that the water pipe 32 and probe 31 of the water injection component can always be aligned with the center of the measuring cylinder 17, thus ensuring the continuity and accuracy of the test process.

[0045] In the example of this application, springs 34 are fixedly installed on both sides of the limiting bar 33, and the springs 34 are arranged symmetrically.

[0046] As a preferred example of this utility model, in the initial state, the spring 34 is in a slightly stretched state, so that the limiting strip 33 has an inward clamping force. When the measuring cylinder 17 is placed into the groove 35, if the diameter of the measuring cylinder 17 is slightly larger than the initial distance of the groove 35, the measuring cylinder 17 squeezes the limiting strip 33, causing the spring 34 to be stretched further. The elastic force of the spring 34 generates a clamping force that matches the diameter of the measuring cylinder 17. If the diameter of the measuring cylinder 17 is slightly smaller than the initial distance of the groove 35, the spring 34 contracts, causing the limiting strip 33 to move inward, so that the groove 35 fits tightly against the outer wall of the measuring cylinder 17. This achieves adaptive fixing of the measuring cylinder 17 with different diameter errors, ensuring that the clamping force is moderate, neither damaging the measuring cylinder 17 nor causing the measuring cylinder 17 to shift.

[0047] In the example of this application, the lower end of the L-shaped support rod 26 is rotatably connected to the rotating seat 3 near the rotating seat 3 by a pin.

[0048] As a preferred example of this utility model, the lower end of the L-shaped support rod 26 is connected to the rotating seat 3 via a pin. The rotating seat 3 can rotate around the pin on a horizontal plane. When filling with water, the rotating seat 3 is rotated so that the rotating seat 3 is perpendicular to the L-shaped support rod 26, which facilitates filling the measuring cylinder 17 with water. After the measuring cylinder 17 is filled with water, the rotating seat 3 is rotated so that the rotating seat 3 is flush with the L-shaped support rod 26, which facilitates the up and down movement of the L-shaped support rod 26 and avoids the rotating seat 3 from becoming an obstacle.

[0049] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An automatic reading device for particle analysis using a densitometer method, characterized in that, include: A base (1) is provided with a support frame (11) at its upper end and a plurality of measuring cylinders (17) are provided at the lower end of the support frame (11). A transverse component, the drive end of which is provided with a sliding frame (14); The detection component includes a second servo motor (2) disposed below the sliding frame (14), a second lead screw (21) installed at the output end of the second servo motor (2), a fixing strip (23) welded to the lower end of the sliding frame (14), an L-shaped support rod (26) disposed on one side of the fixing strip (23), a second lead screw sleeve (22) welded to the upper end of the L-shaped support rod (26), the second lead screw (21) and the second lead screw sleeve (22) being threadedly connected, a matrix laser sensor (27) disposed at the lower end of the L-shaped support rod (26), a housing (24) disposed on the other side of the fixing strip (23), and a signal amplifier disposed in the inner cavity of the housing (24). The water injection assembly includes a water tank (16) disposed above the sliding frame (14), a water pump disposed in the inner cavity of the water tank (16), a water pipe (32) connected to the outlet end of the water pump, a rotating seat (3) rotatably mounted on one end of the L-shaped support rod (26), a probe (31) disposed at the lower end of the rotating seat (3), and the end of the water pipe (32) disposed below the rotating seat (3). The positioning component includes a limiting strip (33) disposed below the base (1), and the two limiting strips (33) are symmetrically disposed on both sides of the measuring cylinder (17).

2. The automatic reading device for particle analysis using a densitometer method according to claim 1, characterized in that, The transverse component includes a first servo motor (12) disposed above the support frame (11), a first lead screw (13) is installed at the output end of the first servo motor (12), a first lead screw sleeve (18) is disposed in the middle of the sliding frame (14), the first lead screw (13) is threadedly connected to the first lead screw sleeve (18), and limit rods (15) are welded on both sides of the upper end of the support frame (11), and the two limit rods (15) are slidably connected to the sliding frame (14) respectively.

3. The automatic reading device for particle analysis using a densitometer method according to claim 2, characterized in that, The matrix laser sensor (27) is detachably connected to the lower end of the L-shaped support rod (26) by means of bolt fixing, and the second lead screw sleeve (22) is slidably connected to the fixing strip (23).

4. The automatic reading device for particle analysis using a densitometer method according to claim 3, characterized in that, The signal output end of the matrix laser sensor (27) is connected to an optical fiber cable (25), and the other end of the optical fiber cable (25) is connected to the signal input end of the signal amplifier.

5. The automatic reading device for particle analysis using a densitometer method according to claim 4, characterized in that, Two probes (31) are provided, and the end of the water pipe (32) is located below the probes (31).

6. The automatic reading device for particle analysis using a densitometer method according to claim 5, characterized in that, The inner side of the limiting strip (33) is provided with a groove (35), and the grooves (35) are equally distributed. The limiting strip (33) is slidably connected to the support frame (11).

7. The automatic reading device for particle analysis using a densitometer method according to claim 6, characterized in that, Springs (34) are fixedly installed on both sides of the limiting strip (33), and the springs (34) are symmetrically arranged.

8. The automatic reading device for particle analysis by densitometer method according to claim 7, characterized in that, The lower end of the L-shaped support rod (26) is rotatably connected to the rotating seat (3) via a pin on the side close to the rotating seat (3).

Images