Online granularity density dynamic analysis device

Abstract

The invention belongs to the technical field of online granularity density dynamic analysis equipment, and particularly relates to an online granularity density dynamic analysis device which comprises a box body, a detection sample box and a coordinate regulator are fixedly mounted at the upper end of the box body, and a high-speed dynamic camera is mounted on the coordinate regulator and used for high-speed dynamic acquisition and analysis of images; a negative pressure adjusting device is fixedly mounted on the inner wall of the box body, and a triangular plate is arranged, so that waste liquid falling into the waste liquid storage tank can smoothly flow completely; a triangular plate moves downwards under the gravity of the waste liquid, so that a pushing and abutting plate pushes and extrudes a triangular block, and the triangular block is matched with a transverse insertion rod to drive an L-shaped limiting plate to laterally move; and a sealing plate is matched with a first fixing plate, a second fixing plate, a second inserting rod and a second limiting disc and is separated from the waste liquid storage tank under the action of reset force of a second spring, and then waste liquid in the waste liquid storage tank can be automatically cleaned.

Description

Technical Field

[0001] The invention relates to the technical field of online particle size density dynamic analysis equipment, and in particular to an online particle size density dynamic analysis device. Background Art

[0002] In the current field of particle size density dynamic analysis technology, various online analysis devices have been widely used. These devices usually have the ability to quickly and accurately analyze samples, thus providing an accurate basis for operation and management; therefore, sampling and testing work is a basic work of quality management.

[0003] Chinese patent publication number CN106918539A discloses "Online particle size density dynamic analysis device". Its technical solution includes a sampling system that can automatically sample and collect samples to be tested; a negative pressure system that is closely connected to the sampling system and enables the sampling system to automatically collect samples to be tested at a certain depth in a vacuum negative pressure manner; a high-speed dynamic analysis system that can continuously collect particle images in the sample to be tested, which has a high-speed dynamic camera; and a support system for supporting and fixing various components in the device.

[0004] The online particle size density dynamic analysis device realizes automatic collection of representative samples in complex sampling environments by organically combining the sampling system with the negative pressure system. It has strong adaptability to the sampling environment, and the negative pressure intensity required for collecting samples can be manually adjusted. By setting a high-speed dynamic camera for high-speed dynamic acquisition and analysis of images, high-precision online dynamic acquisition and analysis of the particle size, particle shape, content, and density of solid particles in the sample to be tested, i.e., the ore slurry, is realized. However, the corresponding technology is lacking in the overall waste liquid cleaning. Specific issues: Waste liquid treatment is not automatic: Existing particle size density dynamic analysis devices often lack an automated mechanism for waste liquid treatment. When the waste liquid in the waste liquid storage tank reaches a certain amount, it usually needs to be discharged and cleaned manually, which is not only time-consuming and labor-intensive, but also prone to waste liquid leakage or equipment damage due to improper operation.

[0005] Incomplete cleaning: Even if some devices have automatic discharge functions, it is often difficult to thoroughly clean the interior of the waste liquid storage tank after the waste liquid is discharged. The residual waste liquid may adhere to the tank wall or internal components. Long-term accumulation will cause equipment performance to decline or even cause failure.

[0006] Lack of linkage mechanism: Existing devices usually lack the necessary linkage mechanism in the process of waste liquid treatment and cleaning. For example, waste liquid discharge and cleaning are often designed as two independent steps that need to be carried out separately, which not only increases the complexity of operation, but may also lead to poor cleaning results.

[0007] Single cleaning method: Many existing devices only rely on simple flushing or wiping when cleaning waste liquid storage tanks, which often fails to achieve the desired cleaning effect. It is especially difficult to completely remove waste liquid attached to the surface of complex structures. Summary of the invention

[0008] In order to solve the above problems, the present invention proposes an online particle size density dynamic analysis device to more accurately solve the problems raised in the above background technology.

[0009] The present invention is achieved through the following technical solutions: The invention proposes an online particle size density dynamic analysis device, comprising a box body, a detection sample box and a coordinate adjuster are fixedly installed on the upper end of the box body, a high-speed dynamic camera is installed on the coordinate adjuster for high-speed dynamic acquisition and analysis of images; a negative pressure regulating device is fixedly installed on the inner wall of the box body, a diaphragm vacuum pump and a waste liquid storage tank are fixedly installed on the inner bottom wall of the box body, a vacuum conduit is connected between the negative pressure regulating device and the diaphragm vacuum pump, a drainage conduit is connected between the detection sample box and the waste liquid storage tank, a sampling conduit is fixedly installed at the water pumping end of the detection sample box, a ring sampler is fixedly installed at the end of the sampling conduit for collecting samples, and a sealing plate is installed at the open end of the waste liquid storage tank; An automatic pop-up structure is connected between the waste liquid storage tank and the sealing plate; a triangular plate is slidably installed inside the waste liquid storage tank, a plug-in rod 1 is fixedly connected to the lower end surface of the triangular plate, and the plug-in rod 1 penetrates the waste liquid storage tank and the box body at the same time, the lower end of the plug-in rod 1 is fixedly connected to a limiting disk 1, and a spring 1 is sleeved on the outer periphery of the plug-in rod 1; The automatic pop-up structure includes a second fixing plate fixedly mounted on the side of the sealing plate and a first fixing plate fixedly mounted on the side of the waste liquid storage tank, a second plug-in rod is inserted on the surface of the first fixing plate, and one end of the second plug-in rod is fixedly connected to the surface of the second fixing plate, one end of the second fixing plate is fixedly connected to a second limiting plate, and a second spring is sleeved on the periphery of the second plug-in rod; A limiting component for limiting the position of the sealing plate is installed on the side of the waste liquid storage tank; The waste liquid storage tank is provided with a jet assembly on its periphery for blowing off the waste liquid that has not completely flowed off the surface of the triangular plate; A water washing component is installed at the upper end of the waste liquid storage tank, which is further used to clean the triangle plate.

[0010] Furthermore, the jet assembly includes a compressed gas tank fixedly installed on the side of the waste liquid storage tank, the upper end of the compressed gas tank is penetrated by an air guide tube, one end of the air guide tube penetrates the top of the waste liquid storage tank and is fixedly connected to a jet tube 1, the inner side wall of the waste liquid storage tank is laterally fixedly connected to a telescopic rod, the outer periphery of the telescopic rod is provided with a spring 3, one end of the telescopic rod is fixedly connected to a groove block, the lower end of the groove block is penetrated by an inverted T-shaped tube, and the outer periphery of the inverted T-shaped tube is penetrated by a jet tube 2 for blowing air to the surface of the triangular plate.

[0011] Furthermore, the limiting component includes a horizontal insertion rod inserted into the side of the waste liquid storage tank, one end of the horizontal insertion rod is fixedly connected to an L-shaped limit plate for clamping the sealing plate, the other end of the horizontal insertion rod is fixedly connected to a triangular block, and the lower end surface of the triangular plate is fixedly connected to a push plate for moving downward and pushing the triangular block to generate lateral displacement; A linkage structure is connected between the L-shaped limiting plate and the air guide pipe.

[0012] Furthermore, the water washing component includes a water tank fixedly mounted on the upper end surface of the waste liquid storage tank, and a through hole is formed through the top of the water tank and the waste liquid storage tank. The through hole is located at the same horizontal plane as the groove block, and is used for the jet pipe 1 to blow water into the interior of the groove block and spray it out through the jet pipe 2.

[0013] Furthermore, the linkage structure includes a connecting rod fixedly installed on the side of the L-shaped limit plate and a valve installed inside the air guide pipe, and one end of the valve is fixedly connected to a rotating valve stem for rotating the valve to realize the opening and closing function; The end of the rotary valve stem is fixedly connected with a gear plate, the end of the connecting rod is fixedly connected with a latch plate, and the latch plate is meshingly connected with the gear plate.

[0014] Furthermore, a sealing member is connected between the waste liquid storage tank and the sealing plate; The sealing member comprises a sealing slot arranged on the surface of the waste liquid storage tank port and a sealing insert ring fixedly connected to the sealing plate on the surface of the waste liquid storage tank opposite to the sealing plate.

[0015] Furthermore, the upper end of the spring 1 is fixedly connected to the lower end surface of the box body, and the lower end of the spring 1 is fixedly connected to the upper end surface of the limiting plate 1.

[0016] Furthermore, the sealing insert ring is inserted into the inner wall of the sealing slot, and the opening size of the sealing slot is matched with the design size of the sealing insert ring.

[0017] Furthermore, one end of the second spring is fixedly connected to the surface of the second limiting plate, and the other end of the second spring is fixedly connected to the surface of the first fixing plate opposite to the second limiting plate.

[0018] Beneficial effects of the present invention: The present invention provides a triangular plate, which allows the waste liquid that falls into the waste liquid storage tank to flow out smoothly; and the triangular plate moves downward due to the gravity of the waste liquid, so that the push plate pushes the triangular block, so that the triangular block cooperates with the horizontal insertion rod to drive the L-shaped limit plate to move sideways. When the L-shaped limit plate no longer limits the sealing plate, the sealing plate cooperates with the fixing plate one, the fixing plate two, the connecting rod two and the limit plate two and separates from the waste liquid storage tank under the restoring force of the spring two, so that the waste liquid in the waste liquid storage tank can be automatically cleaned, thereby avoiding equipment failure caused by the waste liquid being full and not being able to be detected and cleaned in the first time.

[0019] The present invention provides a jet assembly and a linkage structure, so that the horizontal insertion rod drives the L-shaped limit plate to move sideways, and at the same time, the connecting rod drives the tooth plate to move sideways, and then the rotary valve stem rotates under the meshing action of the gear plate and the tooth plate, so that the compressed gas in the compressed gas tank can be introduced into the jet pipe one through the air guide pipe, and then the surface of the triangular plate is blown in coordination with the groove block, the inverted T-tube and the jet pipe two, so that the triangular plate can be more fully cleaned, and the failure of the equipment caused by later adhesion due to incomplete cleaning can be avoided.

[0020] The present invention provides a water washing component so that the water source inside the water tank can fall through the through hole while the groove block is blown away. At the same time, the jet pipe 1 blows the falling water source to the inside of the groove block and the inverted T-tube, and finally the jet pipe 2 sprays the water to the triangle plate, thereby achieving a better flushing effect, further ensuring the degree of waste liquid cleaning, and effectively avoiding the occurrence of later faults caused by incomplete cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional schematic diagram of an embodiment of the present invention; Figure 2 A structural front view of an embodiment of the present invention; Figure 3 It is a three-dimensional schematic diagram of a waste liquid storage tank according to an embodiment of the present invention; Figure 4 This is a three-dimensional schematic diagram of a waste liquid storage tank after the sealing plate is removed according to an embodiment of the present invention; Figure 5 This is a structural front view of a waste liquid storage tank after the sealing plate is removed according to an embodiment of the present invention; Figure 6 An embodiment of the present invention Figure 4 A magnified view of the structure at center.

[0022] In the figure: 1, box; 2, test sample box; 3, coordinate adjuster; 4, high-speed dynamic camera; 5, negative pressure regulating device; 6, diaphragm vacuum pump; 7, vacuum conduit; 8, waste liquid storage tank; 9, drainage conduit; 10, sampling conduit; 11, ring sampler; 12, sealing plate; 13, triangle plate; 14, plug rod 1; 15, limit plate 1; 16, spring 1; 17, fixed plate 1; 18, fixed plate 2; 19, plug rod 2; 20, limit plate 2; 21. Spring 2; 22. Push plate; 23. Horizontal rod; 24. Triangle block; 25. L-shaped limit plate; 26. Compressed gas tank; 27. Air guide tube; 28. Jet tube 1; 29. ​​Telescopic rod; 30. Spring 3; 31. Groove block; 32. Inverted T-tube; 33. Jet tube 2; 34. Water tank; 35. Through hole; 36. Rotary valve stem; 37. Gear plate; 38. Connecting rod; 39. Tooth plate; 40. Sealing slot; 41. Sealing insert ring. DETAILED DESCRIPTION

[0023] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0024] like Figure 1-Figure 6As shown, an online particle size density dynamic analysis device proposed by one embodiment of the present invention is mainly composed of a box body 1. A detection sample box 2 and a coordinate adjuster 3 are fixedly installed on the upper end of the box body 1, and a high-speed dynamic camera 4 is installed on the coordinate adjuster 3 for high-speed dynamic acquisition and analysis of images. A negative pressure regulating device 5 is fixedly installed on the inner wall of the box body 1 for adjusting the negative pressure environment inside the box body. A diaphragm vacuum pump 6 and a waste liquid storage tank 8 are fixedly installed on the inner bottom wall of the box body 1, and the negative pressure regulating device 5 and the diaphragm vacuum pump 6 are connected through a vacuum conduit 7. The detection sample box 2 and the waste liquid storage tank 8 are connected by a drainage conduit 9, and a sampling conduit 10 is fixedly installed on the water pumping end of the detection sample box 2, and a ring sampler 11 is fixedly installed at the end of the sampling conduit 10 for collecting samples to be analyzed. The open end of the waste liquid storage tank 8 is installed with a sealing plate 12 for closing the waste liquid storage tank 8; the waste liquid storage tank 8 and the sealing plate 12 are connected by an automatic pop-up structure, which includes a fixing plate 18 fixedly installed on the side of the sealing plate 12 and a fixing plate 17 fixedly installed on the side of the waste liquid storage tank 8. A plug-in rod 19 is inserted on the surface of the fixing plate 17, and one end of the plug-in rod 19 is fixedly connected to the surface of the fixing plate 18. One end of the fixing plate 18 is fixedly connected to a limiting disk 20, and a spring 21 is sleeved on the periphery of the plug-in rod 19 to provide a reset force when the sealing plate 12 is opened; a triangular plate 13 is slidably installed inside the waste liquid storage tank 8, and a plug-in rod 14 is fixedly connected to the lower end surface of the triangular plate 13, and the plug-in rod 14 penetrates the waste liquid storage tank 8 and the box body 1 at the same time. The lower end of the plug rod 14 is fixedly connected to a limit plate 15, and the outer sleeve of the plug rod 14 is provided with a spring 16, which is used to provide a reset force when the triangular plate 13 moves; the side of the waste liquid storage tank 8 is installed with a limit component for limiting the sealing plate 12, and an air jet component for blowing off the waste liquid that has not flowed off the surface of the triangular plate 13. The upper end of the waste liquid storage tank 8 is also installed with a water washing component for further cleaning the triangular plate 13; the whole has automatic waste liquid treatment and cleaning functions, which improves the reliability and service life of the equipment.

[0025] Furthermore, the jet assembly includes a compressed gas tank 26 fixedly mounted on the side of the waste liquid storage tank 8, and the upper end of the compressed gas tank 26 is connected through an air guide tube 27. One end of the air guide tube 27 passes through the top of the waste liquid storage tank 8 and is fixedly connected to a jet tube 1 28. A telescopic rod 29 is laterally fixedly connected to the inner wall of the waste liquid storage tank 8, and a spring 30 is provided on the outer periphery of the telescopic rod 29 to provide a reset force when the telescopic rod 29 moves. A groove block 31 is fixedly connected to one end of the telescopic rod 29, and an inverted T-shaped tube 32 is connected to the lower end of the groove block 31, and a jet tube 2 33 is connected to the outer periphery of the inverted T-shaped tube 32 to blow air to the surface of the triangular plate 13; the jet assembly can blow off the waste liquid on the surface of the triangular plate 13 to improve the cleaning effect.

[0026] Furthermore, the limiting assembly includes a horizontal insertion rod 23 inserted on the side of the waste liquid storage tank 8, and one end of the horizontal insertion rod 23 is fixedly connected to an L-shaped limit plate 25 for clamping the sealing plate 12. The other end of the horizontal insertion rod 23 is fixedly connected to a triangular block 24, and the lower end surface of the triangular plate 13 is fixedly connected to a push plate 22 for moving downward and pushing the triangular block 24 to produce lateral movement. The L-shaped limit plate 25 and the air guide tube 27 are connected by a linkage structure, which includes a connecting rod 38 fixedly installed on the side of the L-shaped limit plate 25 and a valve installed inside the air guide tube 27, and one end of the valve is fixedly connected to a rotating valve stem 36. The end of the rotary valve stem 36 is fixedly connected to a gear plate 37, and the end of the connecting rod 38 is fixedly connected to a tooth plate 39, and the tooth plate 39 is meshed with the gear plate 37; when the triangular plate 13 moves downward, the triangular block 24 and the horizontal rod 23 are pushed to move by the push plate 22, thereby driving the L-shaped limit plate 25 and the connecting rod 38 to move. The connecting rod 38 drives the rotary valve stem 36 to rotate through the meshing action of the tooth plate 39 and the gear plate 37, thereby opening or closing the valve in the air guide tube 27.

[0027] Furthermore, the water washing component includes a water tank 34 fixedly mounted on the upper surface of the waste liquid storage tank 8, and a through hole 35 is formed through the top of the water tank 34 and the waste liquid storage tank 8, and the through hole 35 is formed on the same horizontal plane as the groove block 31. When the jet assembly is working, the jet pipe 1 28 blows water into the interior of the groove block 31, and the water is sprayed out by the jet pipe 2 33 to further rinse the triangular plate 13; the water washing component can cooperate with the jet assembly to clean the triangular plate 13 more thoroughly, thereby improving the cleanliness and reliability of the equipment.

[0028] Furthermore, the waste liquid storage tank 8 and the sealing plate 12 are connected by a sealing member, which includes a sealing slot 40 opened on the surface of the port of the waste liquid storage tank 8 and a sealing insert ring 41 fixedly connected to the surface of the sealing plate 12 opposite to the waste liquid storage tank 8. The sealing insert ring 41 is inserted at the inner wall of the sealing slot 40, and the opening size of the sealing slot 40 is matched with the design size of the sealing insert ring 41 to ensure a good sealing effect; the sealing member can ensure the sealing between the waste liquid storage tank 8 and the sealing plate 12 to prevent leakage of waste liquid.

[0029] Furthermore, the upper end of the spring 16 is fixedly connected to the lower end surface of the box body 1, and the lower end of the spring 16 is fixedly connected to the upper end surface of the limit plate 15. When the triangular plate 13 moves downward due to the gravity of the waste liquid, the spring 16 will be compressed; when the waste liquid is discharged, the spring 16 will provide a restoring force to return the triangular plate 13 to its initial position; the spring 16 provides the necessary restoring force for the movement of the triangular plate 13, ensuring that the triangular plate 13 can work stably.

[0030] Furthermore, one end of the spring 21 is fixedly connected to the surface of the limiting plate 20, and the other end of the spring 21 is fixedly connected to the surface of the fixing plate 17 opposite to the limiting plate 20. When the sealing plate 12 is opened, the spring 21 will be compressed; when the waste liquid is discharged, the spring 21 will provide a restoring force to return the sealing plate 12 to the initial position and tightly seal the waste liquid storage tank 8; the spring 21 provides the necessary restoring force for the opening and closing of the sealing plate 12, ensuring the sealing and reliability of the waste liquid storage tank 8.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An online particle size density dynamic analysis device, comprising a box (1), wherein a detection sample box (2) and a coordinate adjuster (3) are fixedly mounted on the upper end of the box (1), and a high-speed dynamic camera (4) is mounted on the coordinate adjuster (3) for high-speed dynamic acquisition and analysis of images; characterized in that: A negative pressure regulating device (5) is fixedly mounted on the inner wall of the box body (1), a diaphragm vacuum pump (6) and a waste liquid storage tank (8) are fixedly mounted on the inner bottom wall of the box body (1), a vacuum conduit (7) is connected between the negative pressure regulating device (5) and the diaphragm vacuum pump (6), a liquid discharge conduit (9) is connected between the detection sample box (2) and the waste liquid storage tank (8), a sampling conduit (10) is fixedly mounted on the water extraction end of the detection sample box (2), a ring sampler (11) is fixedly mounted on the end of the sampling conduit (10) for collecting samples, and a sealing plate (12) is mounted on the open end of the waste liquid storage tank (8); An automatic pop-up structure is connected between the waste liquid storage tank (8) and the sealing plate (12); a triangular plate (13) is slidably mounted inside the waste liquid storage tank (8); a plug-in rod (14) is fixedly connected to the lower end surface of the triangular plate (13); and the plug-in rod (14) penetrates the waste liquid storage tank (8) and the box body (1) at the same time; the lower end of the plug-in rod (14) is fixedly connected to a limiting plate (15); and a spring (16) is sleeved around the outer periphery of the plug-in rod (14); The automatic pop-up structure comprises a second fixing plate (18) fixedly mounted on the side of the sealing plate (12) and a first fixing plate (17) fixedly mounted on the side of the waste liquid storage tank (8), a second plug-in rod (19) is inserted into the surface of the first fixing plate (17), and one end of the second plug-in rod (19) is fixedly connected to the surface of the second fixing plate (18), one end of the second fixing plate (18) is fixedly connected to a second limiting plate (20), and a second spring (21) is sleeved around the outer periphery of the second plug-in rod (19); A limiting component for limiting the position of the sealing plate (12) is installed on the side of the waste liquid storage tank (8); The waste liquid storage tank (8) is provided with a jet assembly installed on the periphery thereof, for blowing off the waste liquid that has not completely flowed off the surface of the triangular plate (13); A water washing component is installed at the upper end of the waste liquid storage tank (8), which is further used to clean the triangular plate (13); The limiting component comprises a transverse insertion rod (23) inserted into the side of the waste liquid storage tank (8), one end of the transverse insertion rod (23) is fixedly connected to an L-shaped limiting plate (25) for clamping the sealing plate (12), the other end of the transverse insertion rod (23) is fixedly connected to a triangular block (24), and the lower end surface of the triangular plate (13) is fixedly connected to a push plate (22) for moving downward and pushing the triangular block (24) to generate lateral displacement.

2. An online particle size density dynamic analysis device according to claim 1, characterized in that: The jet assembly comprises a compressed gas tank (26) fixedly mounted on the side of the waste liquid storage tank (8), the upper end of the compressed gas tank (26) being connected to an air guide tube (27), one end of the air guide tube (27) being connected to the top of the waste liquid storage tank (8) and being fixedly connected to a jet tube 1 (28), a telescopic rod (29) being fixedly connected to the inner side wall of the waste liquid storage tank (8) in the transverse direction, a spring 3 (30) being sleeved on the outer periphery of the telescopic rod (29), one end of the telescopic rod (29) being fixedly connected to a groove block (31), the lower end of the groove block (31) being connected to an inverted T-shaped tube (32), the outer periphery of the inverted T-shaped tube (32) being connected to a jet tube 2 (33) for blowing air on the surface of the triangular plate (13); A linkage structure is connected between the L-shaped limiting plate (25) and the air guide pipe (27).

3. An online particle size density dynamic analysis device according to claim 2, characterized in that: The water washing component comprises a water tank (34) fixedly mounted on the upper end surface of the waste liquid storage tank (8), a through hole (35) being formed through the top of the water tank (34) and the waste liquid storage tank (8), the through hole (35) being located on the same horizontal plane as the groove block (31) and used for the first jet pipe (28) to blow water into the interior of the groove block (31) and for the second jet pipe (33) to spray out water.

4. The online particle size density dynamic analysis device according to claim 2, characterized in that: The linkage structure comprises a connecting rod (38) fixedly mounted on the side of the L-shaped limit plate (25) and a valve mounted inside the air guide pipe (27), and one end of the valve is fixedly connected to a rotating valve stem (36) for rotating the valve to realize an opening and closing function; The end of the rotary valve stem (36) is fixedly connected to a gear plate (37), the end of the connecting rod (38) is fixedly connected to a latching tooth plate (39), and the latching tooth plate (39) is meshingly connected to the gear plate (37).

5. The online particle size density dynamic analysis device according to claim 1, characterized in that: A sealing member is connected between the waste liquid storage tank (8) and the sealing plate (12); The sealing member comprises a sealing slot (40) formed on the surface of the port of the waste liquid storage tank (8) and a sealing insert ring (41) fixedly connected to the surface of the sealing plate (12) opposite to the waste liquid storage tank (8).

6. The online particle size density dynamic analysis device according to claim 1, characterized in that: The upper end of the spring 1 (16) is fixedly connected to the lower end surface of the box body (1), and the lower end of the spring 1 (16) is fixedly connected to the upper end surface of the limit plate 1 (15).

7. The on-line particle size density dynamic analysis device according to claim 5, characterized in that: The sealing insert ring (41) is inserted into the inner wall of the sealing slot (40), and the opening size of the sealing slot (40) and the design size of the sealing insert ring (41) are mutually compatible.

8. The online particle size density dynamic analysis device according to claim 1, characterized in that: One end of the second spring (21) is fixedly connected to the surface of the second limiting plate (20), and the other end of the second spring (21) is fixedly connected to the surface of the first fixing plate (17) opposite to the second limiting plate (20).

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