Online particle size and shape testing device

Abstract

This utility model provides an online particle size and shape testing device, relating to the field of crystallinity testing technology. The online particle size and shape testing device includes a testing instrument and a fixing mechanism for fixing the testing instrument. The testing instrument includes an upper housing, inside which a camera is fixedly connected. A middle cylinder is fixedly connected to the bottom of the upper housing, and a telecentric lens is embedded inside the middle cylinder. One end of the telecentric lens extends into the interior of the upper housing and is positioned directly below the camera. By inserting one end of the testing instrument into the test solution and stirring the solution with a magnetic stirrer, a light source is emitted, and the light is focused by a lens. The image is ultimately received by the camera through the lower cylinder and the telecentric lens. The camera transmits the received data to a control device for display. The control device analyzes the image to determine the proportion of crystalline regions in the polymer, thereby quickly determining the crystallinity of the polymer online.

Description

Technical Field

[0001] This utility model relates to a testing device, specifically an online particle size and shape testing device, belonging to the field of crystallinity testing technology. Background Technology

[0002] Crystallinity is used to represent the proportion of crystalline regions in a polymer. The crystallinity of polymers varies widely, generally from 30% to 85%. For the same material, the higher the crystallinity, the higher the melting point. Crystallization is an ordered arrangement of molecular chains, while melting point is determined by completely breaking down the molecular assembly structure to form molecular chains. Generally, the higher the crystallinity, the more regular the molecular chain arrangement, requiring a higher temperature to break it down, thus resulting in a higher melting point. In the field of crystallinity testing technology, existing technologies typically use methods including thermal analysis, X-ray diffraction, and ultrasonic methods to detect polymer crystallinity.

[0003] The above methods either require offline sampling and analysis, or require placing the sample in water or a mold offline for measurement. Analyzing crystallinity using a single detection parameter results in low accuracy and insufficient practicality in polymer crystallinity detection. Therefore, this invention provides an online particle size and shape testing device. Summary of the Invention

[0004] The purpose of this invention is to provide an online particle size and shape testing device to solve the problems mentioned above.

[0005] This utility model is achieved through the following technical solution: an online particle size and shape testing device, comprising a tester and a fixing mechanism for fixing the tester. The tester includes an upper housing, a camera fixedly connected inside the upper housing, a middle cylinder fixedly connected to the bottom of the upper housing, a telecentric lens embedded inside the middle cylinder, one end of the telecentric lens extending into the interior of the upper housing and positioned directly below the camera, a lower cylinder fixedly connected to the bottom of the middle cylinder, a bottom connecting seat fixedly connected to the bottom of the lower cylinder, a notch provided between the lower cylinder and the bottom connecting seat, sapphire glass embedded in the bottom of the lower cylinder and the top of the bottom connecting seat, a light source fixedly connected inside the bottom connecting seat, a lens installed between the light source and the sapphire glass, and a fixing mechanism including a fixing frame.

[0006] Preferably, a sliding rod is slidably connected to the inner side wall of the fixing frame, and a clamping block is fixedly connected to one end of the sliding rod. A spring is sleeved on the sliding rod, and under the action of the spring force, the two clamping blocks clamp and fix the tester.

[0007] Preferably, a V-groove is provided on one side of the clamping block, and an anti-slip pad is fixedly connected to the inner wall of the V-groove. The anti-slip pad improves the clamping effect of the two clamping blocks on the tester.

[0008] Preferably, one end of the sliding rod is fixedly connected to a connecting plate, the connecting plate has a limiting hole, and a limiting rod is fixedly connected to the fixed frame. The limiting rod is inserted into the limiting hole, and the sliding rod is restricted from rotating on the fixed frame by the action of the limiting rod, the connecting plate and the limiting hole.

[0009] Preferably, the fixing mechanism further includes a fixing column, the outer surface of which is slidably connected to a connecting rod, and the fixing frame is fixedly connected to one end of the connecting rod, thereby supporting the fixing frame through the fixing column and the connecting rod.

[0010] Preferably, a sliding block is fixedly connected to the other end of the connecting rod. The sliding block is slidably connected to the outer surface of the fixed column, and a fixing bolt is threaded onto the sliding block. The position of the connecting rod on the outer surface of the fixed column is fixed by the sliding block and the fixing bolt.

[0011] Preferably, a base is fixedly connected to the bottom of the fixing column, and a fixing hole is opened on the outer surface of the fixing column. One end of the fixing bolt is inserted into the fixing hole, and the installation position of the connecting rod is adjusted by rotating the fixing bolt to remove one end of the fixing bolt from the fixing hole.

[0012] This utility model provides an online particle size and shape testing device, which has the following beneficial effects:

[0013] 1. This device inserts one end of the tester into the test solution and stirs the solution with the action of a magnetic stirrer. Light is emitted by a light source and focused by a lens. The cylinder and telecentric lens under the light source finally receive the image through a camera. The camera transmits the received data to the control device for display. The control device analyzes the proportion of crystalline regions in the polymer in the image, thereby quickly measuring its crystallinity online.

[0014] 2. This device uses two clamping blocks to quickly clamp and fix the tester. Under the action of the connecting plate, limiting hole and limiting rod, the tilt angle of the two clamping blocks can be adjusted, thereby adjusting the tilt angle of the tester inserted into the solution, which has good adaptability. Attached Figure Description

[0015] Figure 1 This is a perspective view of the entire utility model;

[0016] Figure 2 This is a perspective view of the testing instrument of this utility model;

[0017] Figure 3 This is a schematic diagram of the testing instrument structure of this utility model;

[0018] Figure 4 For the present utility model Figure 1 Enlarged view of point A.

[0019] [Explanation of Key Component Symbols]

[0020] 1. Tester; 2. Upper housing; 21. Camera; 3. Middle cylinder; 31. Telecentric lens; 4. Lower cylinder; 5. Bottom connecting seat; 51. Sapphire glass; 52. Light source; 53. Lens; 6. Notch; 7. Fixing frame; 71. Sliding rod; 72. Clamping block; 73. Spring; 74. Connecting plate; 75. Limiting hole; 76. Limiting rod; 8. Fixing column; 81. Connecting rod; 82. Sliding block; 9. Base. Detailed Implementation

[0021] This utility model provides an online particle size and shape testing device.

[0022] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The online particle size and shape testing device includes a tester 1 and a fixing mechanism for fixing the tester 1. The tester 1 includes an upper housing 2, with a camera 21 fixedly connected inside the upper housing 2. A middle cylinder 3 is fixedly connected to the bottom of the upper housing 2, and a telecentric lens 31 is embedded inside the middle cylinder 3. One end of the telecentric lens 31 extends into the interior of the upper housing 2 and is located directly below the camera 21. The camera 21 is the core of image or video capture and is responsible for acquiring high-quality visual information. The telecentric lens 31, located below the camera 21, is characterized by providing high-precision imaging and ensuring that the image is distortion-free. It is often used in scenarios requiring precise measurement, such as industrial inspection. These two parts work together and are widely used in fields such as industrial automation and quality inspection to achieve efficient and accurate visual recognition and measurement. The camera 21 is connected to a controller via a transmission line, and the controller is connected to a computer to receive the images and videos presented by the camera 21 and perform analysis and processing.

[0023] Please refer to it again. Figure 1 , Figure 2 and Figure 3The bottom of the middle cylinder 3 is fixedly connected to the lower cylinder 4, which is hollow. The bottom of the lower cylinder 4 is fixedly connected to the bottom connecting seat 5. There is a notch 6 between the lower cylinder 4 and the bottom connecting seat 5. Sapphire glass 51 is inlaid at the bottom of the lower cylinder 4 and the top of the bottom connecting seat 5. A light source 52 is fixedly connected inside the bottom connecting seat 5. A lens 53 is installed between the light source 52 and the sapphire glass 51. Sapphire glass 51 is usually used as a base material for protective windows or optical elements due to its high hardness and corrosion resistance. The light source 52 provides the source of light and is the basis for the optical device to work properly. The lens 53 is the core component of the optical device and is used for focusing to achieve specific optical functions. The polymer solution flows into the space between the two pieces of sapphire glass 51 through the notch 6.

[0024] Please refer to it again. Figure 1 and Figure 4 The fixing mechanism includes a fixing frame 7, a sliding rod 71 slidably connected to the inner wall of the fixing frame 7, a clamping block 72 fixedly connected to one end of the sliding rod 71, a spring 73 sleeved on the sliding rod 71, a V-groove opened on one side of the clamping block 72, and an anti-slip pad fixedly connected to the inner wall of the V-groove. Under the action of the spring 73, the two clamping blocks 72 are pushed closer to each other, so that the tester 1 is clamped between the two clamping blocks 72, and the stability during the clamping process is improved by the action of the anti-slip pad.

[0025] Please refer to it again. Figure 1 and Figure 4 One end of the sliding rod 71 is fixedly connected to a connecting plate 74, and a limiting hole 75 is provided on the connecting plate 74. A limiting rod 76 is fixedly connected to the fixing frame 7, and the limiting rod 76 is inserted into the limiting hole 75. The sliding rod 71 is cylindrical. By driving the sliding rod 71 to rotate, the tilt angle of the two clamping blocks 72 is adjusted, thereby adjusting the tilt angle of one end of the tester 1 inserted into the polymer solution. Then, the rotation of the sliding rod 71 is limited by the limiting hole 75 covering the outer surface of the limiting rod 76.

[0026] Please refer to it again. Figure 1 The fixing mechanism also includes a fixing column 8, a connecting rod 81 slidably connected to the outer surface of the fixing column 8, a fixing frame 7 fixedly connected to one end of the connecting rod 81, and a sliding block 82 fixedly connected to the other end of the connecting rod 81. The sliding block 82 is slidably connected to the outer surface of the fixing column 8. By driving the sliding block 82 to slide on the outer surface of the fixing column 8, the horizontal height of the connecting rod 81 can be adjusted, thereby adjusting the depth of the tester 1 inserted into the solution.

[0027] Please refer to it again. Figure 1The sliding block 82 is threaded with a fixing bolt, and the bottom of the fixing column 8 is fixedly connected with a base 9. The outer surface of the fixing column 8 is provided with a fixing hole, and one end of the fixing bolt is inserted into the fixing hole. The fixing hole and the fixing bolt restrict the sliding block 82 from sliding on the fixing column 8, thereby fixing the installation position of the connecting rod 81.

[0028] Working principle: One end of the tester 1 is connected to the controller via a transmission line, and then the controller is connected to the computer. The fixing mechanism is placed around the test solution. By pulling the two sliding rods 71, the two clamping blocks 72 are moved away from each other. The tester 1 is placed between the two clamping blocks 72, and the bottom of the tester 1 is inserted into the test solution. Under the action of the spring 73, the clamping blocks 72 clamp and fix the tester 1. A set of parallel light is emitted by the light source 52 and focused by the lens 53. The cylinder 4 and the telecentric lens 31 under the light source finally receive the image through the camera 21. The camera 21 transmits the received data to the controller and finally displays it on the computer. The computer analyzes the image to determine the proportion of crystalline regions in the polymer, thereby quickly measuring the crystallinity of the polymer solution online.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An online particle size and shape testing device comprising a tester (1) and a fixing mechanism for fixing the tester (1), characterized in that: The testing instrument (1) includes an upper housing (2), a camera (21) is fixedly connected inside the upper housing (2), a middle cylinder (3) is fixedly connected to the bottom of the upper housing (2), a telecentric lens (31) is embedded inside the middle cylinder (3), one end of the telecentric lens (31) extends into the interior of the upper housing (2) and is located directly below the camera (21), a lower cylinder (4) is fixedly connected to the bottom of the middle cylinder (3), and a bottom connecting seat (5) is fixedly connected to the bottom of the lower cylinder (4). A notch (6) is provided between the lower cylinder (4) and the bottom connecting seat (5). Sapphire glass (51) is inlaid at the bottom of the lower cylinder (4) and the top of the bottom connecting seat (5). A light source (52) is fixedly connected inside the bottom connecting seat (5). A lens (53) is installed between the light source (52) and the sapphire glass (51). The fixing mechanism includes a fixing frame (7).

2. An in-line particle size and shape testing device according to claim 1, characterised in that: The inner wall of the fixed frame (7) is slidably connected to a sliding rod (71), one end of the sliding rod (71) is fixedly connected to a clamping block (72), and a spring (73) is sleeved on the sliding rod (71).

3. An in-line particle size and shape testing apparatus according to claim 2, characterised in that: A V-groove is provided on one side of the clamping block (72), and an anti-slip pad is fixedly connected to the inner wall of the V-groove.

4. An in-line particle size and shape testing device according to claim 2, characterised in that: One end of the sliding rod (71) is fixedly connected to a connecting plate (74), and a limiting hole (75) is provided on the connecting plate (74). A limiting rod (76) is fixedly connected to the fixing frame (7), and the limiting rod (76) is inserted into the limiting hole (75).

5. The online particle size and shape testing device according to claim 1, characterized in that: The fixing mechanism also includes a fixing column (8), and a connecting rod (81) is slidably connected to the outer surface of the fixing column (8), and the fixing frame (7) is fixedly connected to one end of the connecting rod (81).

6. The online particle size and shape testing device according to claim 5, characterized in that: The other end of the connecting rod (81) is fixedly connected to a sliding block (82), which is slidably connected to the outer surface of the fixed column (8), and a fixing bolt is threaded onto the sliding block (82).

7. The online particle size and shape testing device according to claim 6, characterized in that: The bottom of the fixed column (8) is fixedly connected to the base (9), and a fixing hole is opened on the outer surface of the fixed column (8), and one end of the fixing bolt is inserted into the fixing hole.

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