Sample introduction device of particle size analyzer and use method of sample introduction device

Abstract

The invention discloses a particle size analyzer sample introduction device and a using method, and belongs to the technical field of liquid material sample introduction, the particle size analyzer sample introduction device comprises a bottom frame, a control box is installed on the top of the bottom frame, a supporting frame is connected to the top of the bottom frame, a mounting frame is connected to the top of the supporting frame, the particle size analyzer sample introduction device further comprises a motor and a liquid separation box, an output shaft of the motor is connected with a transmission shaft, the outer wall of the transmission shaft is connected with a plurality of supporting sleeves, one side of each supporting sleeve is connected with a side frame, and one side of each side frame is connected with a drainage box; according to the multi-concentration liquid distribution device disclosed by the invention, a plurality of liquid distribution boxes are arranged, a stock solution in the previous-stage liquid distribution box flows into the next-stage liquid distribution box through a through pipe and a drainage box at the bottom of each liquid distribution box, and a diluent is injected through a valve to dilute the stock solution in the previous-stage liquid distribution box, so that the device can perform multi-concentration configuration; and a large batch of materials can be divided into a small number of representative detection samples, so that the application range of the device is widened.

Description

Technical Field

[0001] This invention belongs to the field of liquid material sampling technology, and particularly relates to a sample injection device for a particle size analyzer and its usage method. Background Technology

[0002] Particle size analyzers analyze particle distribution by measuring the scattering spectrum of a particle group and processing the data with a computer. Particle size analyzers can be used to measure the particle size distribution of solid particulate matter and the particle size distribution of moving particle groups. Before testing, particle size analyzers require a sample feeding device for feeding detection.

[0003] However, in actual use, traditional particle size analyzer injection devices can only be configured for a single concentration when preparing test solutions. This requires multiple operations when preparing test solutions of different concentrations, resulting in low detection efficiency and affecting practicality. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that traditional particle size analyzer injection devices cannot prepare multi-concentration detection solutions, and to propose a particle size analyzer injection device and its usage method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sample injection device for a particle size analyzer, comprising a base frame, a control box mounted on the top of the base frame, a support frame connected to the top of the base frame, and a mounting frame connected to the top of the support frame, and further comprising: The motor is mounted on the top of the mounting bracket, and the output shaft of the motor is connected to a drive shaft. Multiple support sleeves are connected to the outer wall of the drive shaft. A side frame is connected to one side of the support sleeve, and a drain box is connected to one side of the side frame. The liquid separation boxes are installed at regular intervals within a support frame, and the bottom of each liquid separation box is connected to multiple tubes.

[0006] As a further description of the above technical solution: The side wall of the separator is connected to a valve, and the top of the separator is connected to an inlet pipe, while the bottom of the separator is connected to an outlet pipe.

[0007] As a further description of the above technical solution: The drive shaft is connected to multiple agitation devices, the agitation devices including: Mounting sleeves, the inner walls of the plurality of mounting sleeves are connected to the outer wall of the drive shaft; Support plates, one side of which is connected to the outer wall of the mounting sleeve, and a sliding groove is provided inside the support plate; The lead screw seat has multiple outer walls that are slidably connected to the inner wall of the sliding groove, and a stirring rod is driven at the bottom of the lead screw seat, with multiple stirring plates connected to the outer wall of the stirring rod.

[0008] As a further description of the above technical solution: The stirring device also includes: A reciprocating lead screw, one end of which is rotatably connected to one side of the inner wall of the sliding groove, and the inner wall of the lead screw seat is drivingly connected to the outer wall of the reciprocating lead screw; A plurality of the rotating grooves are formed on one side of the sliding groove, and the other side of the rotating grooves extends to one side of the support plate; The rotating rods are rotatably connected to the inner wall of the rotating groove on their outer walls, and one end of each rotating rod is connected to one end of a reciprocating lead screw.

[0009] As a further description of the above technical solution: The stirring device also includes: The first gear, and multiple first gears are connected on one side to one end of the rotating rod; The toothed ring has its outer wall connected to the inner wall of the separator, and its top meshes with the outer wall of the first gear.

[0010] As a further description of the above technical solution: The stirring device also includes: The second gear, the bottom of multiple second gears is connected to the top of the stirring rod, and the second gear has a rotating groove inside; Rotating blocks, the tops of the plurality of rotating blocks are connected to the bottom of the lead screw seat, and the outer wall of the rotating blocks is rotatably connected to the inner wall of the rotating groove; The racks are connected at their tops to the bottom of the support plate, and one side of the rack meshes with the outer wall of the second gear.

[0011] As a further description of the above technical solution: The mounting bracket is connected to a fixing sleeve at the bottom. The inner wall of the fixing sleeve is in contact with and rotatably connected to the outer wall of the drive shaft. A lubrication device is provided inside the fixing sleeve.

[0012] As a further description of the above technical solution: The lubrication device includes: Oil storage tanks, multiple oil storage tanks are opened in a fixed sleeve, and a through groove is opened between two adjacent oil storage tanks; The movable grooves are formed on the inner wall of the fixed sleeve, and a connecting groove is formed on one side of the inner wall of the movable grooves. The other side of the connecting groove is connected to one side of the oil storage tank. A filling groove is provided on one side of the inner wall of one of the oil storage tanks, and a threaded groove is provided in the filling groove, with a sealing bolt threaded into the threaded groove.

[0013] As a further description of the above technical solution: The lubrication device further includes: The sealing blocks, wherein the outer walls of the multiple sealing blocks are attached to and slidably connected to the inner wall of the movable groove, and one side of the sealing block is attached to and slidably connected to the outer wall of the drive shaft, and one side of the sealing block is attached to one side of the connecting groove; The springs, one end of which is connected to one side of the sealing block, and the other end of which is connected to one side of the inner wall of the movable groove.

[0014] A method for using a sample introduction device for a particle size analyzer specifically includes the following steps: S1: The tube and drainage box at the bottom of the separatory box flow the original liquid in the separatory box of the previous stage to the separatory box of the next stage. The diluent is added through the valve to dilute the original liquid in the separatory box of the previous stage, so that the device can perform multi-concentration preparation.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, by setting up multiple dispensing boxes, the original liquid in the previous dispensing box flows to the next dispensing box through the connecting pipe and the drainage box at the bottom of the dispensing box, and the original liquid in the first-level dispensing box is diluted and prepared by adding diluent through the valve, so that the device can perform multi-concentration configuration, and can reduce a large batch of materials into a small number of test samples with different concentrations, thereby improving the applicability of the device.

[0016] 2. In this invention, by setting up a stirring device, the installation sleeve is driven to rotate via a transmission shaft, causing the installation sleeve to move the support plate. The support plate drives the stirring rod to rotate via a sliding groove and a lead screw seat. The stirring rod drives the stirring plate to rotate, and the support plate drives the first gear to move at the top of the gear ring, causing the gear ring to drive the first gear to rotate. The first gear drives the reciprocating lead screw to rotate via a rotating rod. The reciprocating lead screw drives the lead screw seat to move, and the lead screw seat drives the stirring rod at the bottom to move laterally. Thus, the stirring rod drives the stirring plate to move circumferentially while moving laterally, thereby improving the mixing efficiency of the diluted medicine and improving the preparation efficiency.

[0017] 3. In this invention, by setting a lubrication device, when the friction between the drive shaft and the fixed sleeve increases, the drive shaft drives the sealing block to move, causing the sealing block to lose its sealing and blocking effect on the connecting groove. Then, the lubricating oil in the oil storage tank flows out through the connecting groove to seal between the drive shaft and the fixed sleeve, thereby avoiding insufficient lubrication that could damage the drive shaft and affect its use. Attached Figure Description

[0018] Figure 1 This is a front view schematic diagram of the sample injection device for a particle size analyzer proposed in this invention; Figure 2 This is a side view of the sample feeding device for a particle size analyzer proposed in this invention. Figure 3 This invention provides a sample feeding device for a particle size analyzer. Figure 2 Enlarged structural diagram of section A; Figure 4 This is a side view cross-sectional structural diagram of a particle size analyzer sample injection device proposed in this invention; Figure 5 This invention provides a sample feeding device for a particle size analyzer. Figure 4 Enlarged structural diagram of section B; Figure 6 This is a schematic diagram of the lubrication device structure of a particle size analyzer sample feeding device proposed in this invention.

[0019] Legend: 1. Control box; 2. Base frame; 3. Mounting frame; 4. Support frame; 5. Valve; 6. Separating box; 7. Discharge pipe; 8. Agitator; 801. First gear; 802. Support plate; 803. Rotary groove; 804. Sliding groove; 805. Lead screw seat; 806. Rack; 807. Reciprocating lead screw; 808. Second gear; 809. Agitator plate; 810. Agitator rod; 811. Rotating block; 812. Rotary groove; 8 13. Gear ring; 814. Mounting sleeve; 815. Rotating rod; 9. Lubrication device; 901. Oil reservoir; 902. Connecting groove; 903. Movable groove; 904. Sealing block; 605. Spring; 906. Through groove; 907. Sealing bolt; 908. Filling groove; 10. Feed pipe; 11. Motor; 12. Drive shaft; 13. Support sleeve; 14. Side frame; 15. Drainage box; 16. Through pipe; 17. Fixing sleeve. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-6 The present invention provides a technical solution: a sample injection device for a particle size analyzer, including a base frame 2, a control box 1 mounted on the top of the base frame 2, a support frame 4 connected to the top of the base frame 2, and a mounting frame 3 connected to the top of the support frame 4, and further including: Motor 11 is mounted on the top of mounting bracket 3, and the output shaft of motor 11 is connected to drive shaft 12. Multiple support sleeves 13 are connected to the outer wall of drive shaft 12. A side frame 14 is connected to one side of support sleeve 13, and a drainage box 15 is connected to one side of side frame 14. Separating boxes 6 are installed at fixed intervals within the support frame 4, and the bottom of the separating boxes 6 is connected to multiple connecting pipes 16.

[0022] Furthermore, the side wall of the separator 6 is connected to the valve 5, and the top of the separator 6 is connected to the feed pipe 10, while the bottom of the separator 6 is connected to the discharge pipe 7.

[0023] The specific implementation method is as follows: By setting up multiple dispensing boxes 6, the raw liquid in the previous dispensing box 6 flows to the next dispensing box 6 through the through pipe 16 and the drainage box 15 at the bottom of the dispensing box 6. Diluent is added through valve 5 to dilute the raw liquid in the previous dispensing box 6, thus enabling the device to perform multi-concentration preparation. This allows large batches of materials to be reduced into small, representative test samples, thereby improving the applicability of the device. Furthermore, the motor 11 drives the drive shaft 12 to rotate, which in turn drives the support sleeve 13 to rotate. The support sleeve 13 drives the side frame 14 to rotate, and the rotation of the side frame 14 drives the drainage box 15 to rotate. The drainage box 15 guides the falling stock solution, ensuring its uniform dispersion and consistent concentration within the same distribution box 6. Multiple tubes 16 at the bottom of the distribution box 6 allow stock solution from different locations within the box to flow out, guaranteeing that the stock solution in this first-level distribution box 6 represents the concentration of the stock solution in the previous distribution box 6. Furthermore, because the stock solution particles vary in length and are unevenly distributed, a funnel-shaped perforation is provided in the center of the distribution box 6, located at the bottom of the multiple tubes 16. This allows stock solution in the remaining tubes 16 to drip from the funnel-shaped perforation when the drainage box 15 collects the stock solution, preventing it from falling into the distribution box 6 and causing uneven distribution.

[0024] The drive shaft 12 is connected to multiple agitators 8, and the agitators 8 include: Mounting sleeve 814, the inner wall of multiple mounting sleeves 814 is connected to the outer wall of drive shaft 12; Support plate 802, multiple support plates 802 are connected to the outer wall of mounting sleeve 814 on one side, and a sliding groove 804 is provided in the support plate 802; A lead screw seat 805 is provided, with the outer wall of multiple lead screw seats 805 slidably connected to the inner wall of a sliding groove 804, and an agitator 810 is provided at the bottom of the lead screw seat 805, with multiple agitator plates 809 connected to the outer wall of the agitator 810.

[0025] Furthermore, the agitator 8 also includes: The reciprocating lead screw 807 has one end rotatably connected to one side of the inner wall of the sliding groove 804, and the inner wall of the lead screw seat 805 is connected to the outer wall of the reciprocating lead screw 807 in a transmission connection. A rotating groove 803, multiple rotating grooves 803 are formed on one side of the sliding groove 804, and the other side of the rotating groove 803 extends to one side of the support plate 802; Rotating rod 815, the outer wall of multiple rotating rods 815 is rotatably connected to the inner wall of rotating groove 803, and one end of rotating rod 815 is connected to one end of reciprocating screw 807.

[0026] Furthermore, the agitator 8 also includes: First gear 801, one side of multiple first gears 801 is connected to one end of rotating rod 815; The toothed ring 813 has its outer wall connected to the inner wall of the liquid separator 6, and its top meshes with the outer wall of the first gear 801.

[0027] Furthermore, the agitator 8 also includes: The bottom of multiple second gears 808 is connected to the top of the stirring rod 810, and a rotating groove 812 is provided inside the second gear 808; Rotating block 811, the top of multiple rotating blocks 811 is connected to the bottom of lead screw seat 805, and the outer wall of rotating block 811 is rotatably connected to the inner wall of rotating groove 812; Rack 806, multiple racks 806 are connected at the top to the bottom of support plate 802, and one side of rack 806 meshes with the outer wall of second gear 808.

[0028] The specific implementation method is as follows: By setting up a stirring device 8, the motor 11 drives the transmission shaft 12 to rotate, the transmission shaft 12 drives the mounting sleeve 814 to rotate, so that the mounting sleeve 814 drives the support plate 802 to move, the support plate 802 drives the sliding groove 804 to rotate, the sliding groove 804 drives the internally sliding lead screw seat 805 to move, the lead screw seat 805 drives the rotating block 811 to move, the rotating block 811 drives the second gear 808 to rotate through the rotating groove 812, the second gear 808 drives the stirring rod 810 to rotate, the stirring rod 810 drives the stirring plate 809 to rotate, and when the support plate 802 rotates, it drives the rotating rod 815 to rotate, the rotating rod 815 drives the first gear 801 to move at the top of the gear ring 813, and through meshing, the gear ring 813... 13 drives the first gear 801 to rotate, the first gear 801 drives the rotating rod 815 to rotate, the rotating rod 815 drives the reciprocating lead screw 807 to rotate, the reciprocating lead screw 807 drives the lead screw seat 805 to move, the lead screw seat 805 drives the bottom stirring rod 810 to move laterally, so that the stirring rod 810 drives the stirring plate 809 to move circumferentially and laterally at the same time, thereby improving the mixing efficiency of the diluted medicine and improving the preparation efficiency. When the second gear 808 moves laterally, it meshes with the rack 806, causing the second gear 808 to rotate, thereby driving the stirring rod 810 to rotate. The stirring rod 810 drives the agitator to rotate around the stirring rod 810, thereby further improving the mixing efficiency of the device and ensuring the uniformity of concentration.

[0029] The bottom of the mounting bracket 3 is connected to a fixing sleeve 17. The inner wall of the fixing sleeve 17 is attached to and rotatably connected to the outer wall of the drive shaft 12. The fixing sleeve 17 is equipped with a lubrication device 9.

[0030] Furthermore, the lubrication device 9 includes: Oil storage tank 901, multiple oil storage tanks 901 are opened in the fixed sleeve 17, and a through groove 906 is opened between two adjacent oil storage tanks 901; Multiple movable grooves 903 are formed on the inner wall of the fixed sleeve 17, and a connecting groove 902 is formed on one side of the inner wall of the movable groove 903, and the other side of the connecting groove 902 is connected to one side of the oil storage tank 901. A filling groove 908 is provided on one side of the inner wall of one of the oil storage tanks 901, and a threaded groove is provided in the filling groove, and a sealing bolt 907 is threadedly connected in the threaded groove.

[0031] Furthermore, the lubrication device 9 also includes: The sealing block 904 has multiple sealing blocks 904 whose outer walls are attached to and slidably connected to the inner wall of the movable groove 903, and one side of the sealing block 904 is attached to and slidably connected to the outer wall of the drive shaft 12, and one side of the sealing block 904 is attached to one side of the connecting groove 902. Spring 605, multiple springs 605 are connected at one end to one side of sealing block 904, and at the other end of spring 605 is connected to one side of inner wall of movable groove 903.

[0032] The specific implementation method is as follows: By setting up a lubrication device 9, when the friction between the drive shaft 12 and the fixed sleeve 17 increases, the drive shaft 12 causes the sealing block 904 to move due to the friction, so that the sealing block 904 loses its sealing and blocking effect on the connecting groove 902. When the sealing block 904 moves, it compresses the spring 605, causing the spring 605 to generate a rebound force. Then, by misaligning the sealing block 904 with the connecting groove 902, the lubricating oil in the oil reservoir 901 is forced to flow out through the connecting groove 902 to seal between the drive shaft 12 and the fixed sleeve 17, thereby avoiding damage to the drive shaft 12 due to insufficient lubrication and affecting its use. When the lubrication increases, the sealing block 904 is reset and moved by the rebound force of the spring 605, so that the sealing block 904 re-seals the connecting groove 902, avoiding excessive flow of lubricating oil and waste of lubricating oil.

[0033] Working principle: In use, the raw solution to be tested enters through the feed pipe 10. The raw material from the first stage flows downwards through the through-pipe 16 at the bottom of the separator 6. Then, the motor 11 drives the drive shaft 12 to rotate, which in turn drives the support sleeve 13 to rotate. The support sleeve 13 drives the side frame 14 to rotate, and the side frame 14 drives the diversion box 15 to rotate. This allows the diversion box 15 to collect the raw solution dripping from the through-pipe 16 at different positions, ensuring that the raw solution from the previous stage flows evenly into the separator 6 of the next stage. Finally, diluent is added through valve 5. The stock solution in the primary separator 6 is diluted and prepared, allowing the device to reduce a large batch of material into a small number of representative test samples. Then, the drive shaft 12 drives the mounting sleeve 814 to rotate, which in turn moves the support plate 802. The support plate 802 moves the lead screw seat 805 in the sliding groove 804, which in turn moves the stirring rod 810. The stirring rod 810 then moves the stirring plate 809, causing the stirring plate 809 to rotate around the drive shaft 12. This rotation is also achieved through the rotation of the support plate 802 and the rotating rod 815. The first gear 801 moves at the top of the gear ring 813, causing the gear ring 813 to drive the first gear 801 to rotate. This, in turn, causes the first gear 801 to drive the reciprocating lead screw 807 to rotate via the rotating rod 815. The reciprocating lead screw 807 drives the lead screw seat 805 to move back and forth. The lead screw seat 805 drives the bottom stirring rod 810 to move laterally, and through the lead screw seat 805, it drives the bottom second gear 808 to move, causing the rack 806 to drive the second gear 808 to rotate. The second gear 808 drives the stirring plate 809 to rotate around the stirring rod 810. This increases the stirring mode of the stirring plate 809, ensuring the mixing efficiency and uniformity of the medicine. Finally, after long-term use, the friction between the drive shaft 12 and the fixed sleeve 17 increases, and the drive shaft 12 drives the sealing block 904 to move through the friction, causing the sealing block 904 to be misaligned with the connecting groove 902. This ensures that the lubricating oil in the oil reservoir 901 flows out to lubricate the fixed sleeve 17 and the drive shaft 12, ensuring the lubrication effect between the drive shaft 12 and the fixed sleeve 17, and preventing the drive shaft 12 from being damaged by friction due to long-term use, thus affecting its use.

[0034] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0037] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0038] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A sample feeding device for a particle size analyzer, comprising a base frame (2), a control box (1) mounted on the top of the base frame (2), and a support frame (4) connected to the top of the base frame (2), wherein a mounting frame (3) is connected to the top of the support frame (4), characterized in that, Also includes: Motor (11), the motor (11) is mounted on the top of the mounting bracket (3), and the output shaft of the motor (11) is connected to the transmission shaft (12), and the outer wall of the transmission shaft (12) is connected to multiple support sleeves (13), one side of the support sleeve (13) is connected to a side frame (14), and one side of the side frame (14) is connected to a drainage box (15). Separating boxes (6), multiple separating boxes (6) are installed at a fixed distance in the support frame (4), and multiple connecting pipes (16) are connected to the bottom of the separating boxes (6).

2. The sample feeding device for a particle size analyzer according to claim 1, characterized in that, The side wall of the liquid separator (6) is connected to the valve (5), and the top side of the liquid separator (6) is connected to the feed pipe (10), and the bottom of the liquid separator (6) is connected to the discharge pipe (7).

3. The sample feeding device for a particle size analyzer according to claim 1, characterized in that, The drive shaft (12) is connected to a plurality of agitating devices (8), the agitating devices (8) including: Mounting sleeves (814), the inner walls of the plurality of mounting sleeves (814) are connected to the outer wall of the drive shaft (12); Support plate (802), one side of the plurality of support plates (802) is connected to the outer wall of the mounting sleeve (814), and a sliding groove (804) is provided in the support plate (802). A lead screw seat (805) is provided, the outer wall of which is slidably connected to the inner wall of the sliding groove (804), and a stirring rod (810) is provided at the bottom of the lead screw seat (805), and a plurality of stirring plates (809) are connected to the outer wall of the stirring rod (810).

4. The sample feeding device for a particle size analyzer according to claim 3, characterized in that, The stirring device (8) further includes: A reciprocating lead screw (807) is provided, one end of which is rotatably connected to one side of the inner wall of the sliding groove (804), and the inner wall of the lead screw seat (805) is connected to the outer wall of the reciprocating lead screw (807) in a transmission connection. Rotary grooves (803), a plurality of said rotary grooves (803) are formed on one side of the sliding groove (804), and the other side of the rotary grooves (803) extends to one side of the support plate (802); Rotating rod (815), the outer wall of the plurality of rotating rods (815) is rotatably connected to the inner wall of the rotating groove (803), and one end of the rotating rod (815) is connected to one end of the reciprocating screw (807).

5. The sample feeding device for a particle size analyzer according to claim 3, characterized in that, The stirring device (8) further includes: First gear (801), one side of the first gear (801) is connected to one end of the rotating rod (815); The toothed ring (813) has its outer wall connected to the inner wall of the liquid separator (6), and the top of the toothed ring (813) meshes with the outer wall of the first gear (801).

6. The sample feeding device for a particle size analyzer according to claim 3, characterized in that, The stirring device (8) further includes: The bottom of the second gear (808) is connected to the top of the stirring rod (810), and a rotating groove (812) is provided inside the second gear (808). Rotating blocks (811), the top of multiple rotating blocks (811) is connected to the bottom of the lead screw seat (805), and the outer wall of the rotating blocks (811) is rotatably connected to the inner wall of the rotating groove (812); The rack (806) has its top connected to the bottom of the support plate (802), and one side of the rack (806) meshes with the outer wall of the second gear (808).

7. The sample feeding device for a particle size analyzer according to claim 1, characterized in that, The mounting bracket (3) is connected to a fixing sleeve (17) at the bottom. The inner wall of the fixing sleeve (17) is in contact with the outer wall of the drive shaft (12) and rotates. The fixing sleeve (17) is provided with a lubrication device (9).

8. The sample feeding device for a particle size analyzer according to claim 7, characterized in that, The lubrication device (9) includes: Oil storage tank (901), multiple oil storage tanks (901) are opened in the fixed sleeve (17), and a through groove (906) is opened between two adjacent oil storage tanks (901). The movable groove (903) is provided on the inner wall of the fixed sleeve (17), and a connecting groove (902) is provided on one side of the inner wall of the movable groove (903), and the other side of the connecting groove (902) is connected to one side of the oil storage tank (901). A filling groove (908) is provided on one side of the inner wall of one of the oil storage tanks (901), and a threaded groove is provided in the filling groove (908), and a sealing bolt (907) is threaded in the threaded groove.

9. A sample feeding device for a particle size analyzer according to claim 7, characterized in that, The lubrication device (9) further includes: The sealing block (904) has an outer wall that is attached to and slidably connected to the inner wall of the movable groove (903), and one side of the sealing block (904) is attached to and slidably connected to the outer wall of the drive shaft (12), and one side of the sealing block (904) is attached to one side of the connecting groove (902); A spring (605), one end of which is connected to one side of the sealing block (904), and the other end of which is connected to one side of the inner wall of the movable groove (903).

10. A method for using a sample feeding device for a particle size analyzer, characterized in that, Applied to any of the particle size analyzer sample feeding devices of claims 1-9, specifically including the following steps: S1: The tube (16) and the drainage box (15) at the bottom of the separator (6) allow the original liquid in the separator (6) of the previous stage to flow into the separator (6) of the next stage. The diluent is added through the valve (5) to dilute the original liquid in the separator (6) of the next stage, so that the device can perform multi-concentration configuration.

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