Microplastic feeding device

Abstract

The micro-plastic feeding device comprises a pipe body, two ends of the pipe body are open, one end of the pipe body is connected with a first blocking cover, the other end of the pipe body is connected with a second blocking cover, one end of the pipe body is provided with a pipe shaft through hole, the pipe shaft through hole is perpendicular to the axis of the pipe body, the first blocking cover is columnar and is clamped in a port of the pipe body, and the side wall of the first blocking cover abuts against the inner wall of the pipe body. A rotating shaft through hole corresponding to the pipe shaft through hole is formed in the side wall of the first blocking cover, the rotating shaft penetrates through the pipe body and the first blocking cover through the pipe shaft through hole and the rotating shaft through hole and is fixedly connected with the first blocking cover, one end of the rotating shaft is connected with a rotating shaft fixing block, the other end of the rotating shaft is connected with a knob, a hole is formed in the end face of the second blocking cover, and the outer wall of the pipe body is connected with a pipe body fixing component. According to the device, fixed-point quantitative feeding can be carried out on micro-plastics in a water tank experiment, disturbance to a water body is reduced, the accuracy and repeatability of the water tank experiment are improved, and the distribution and migration processes of the micro-plastics in the natural water body are more accurately simulated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the indoor sink experiment technical field relates to a kind of microplastics delivery device. BACKGROUND

[0002] Microplastics is defined as small particle size plastic microparticle less than 5mm, adsorption is strong, difficult degradation, size is small, easy migration, is the important carrier of various pollutions.Microplastics experiment of sink scale can provide controllable experimental environment for natural microplastics pollution, by simulating natural water environment, help reveal the transport and distribution law of microplastics in natural water, provide scientific basis for the treatment of natural microplastics pollution.

[0003] Existing delivery device has syringe, microplastics particles are dispersed in solution, then it is dropped into sink uniformly by syringe, the concentration and distribution of delivery can be more accurately controlled, but solution preparation is complex and microplastics particles must be prevented from gathering, and in the process of delivery, the addition of solution changes the temperature and other environmental conditions in sink, and the disturbance to water body is larger.It can be seen that, traditional microplastics delivery device is complex in operation, and the disturbance to water flow is larger in the process of delivery, seriously affect the accuracy of experimental result. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of microplastics delivery device, microplastics can be delivered in sink experiment with fixed point and quantity, and the disturbance to water body is smaller, improve the accuracy and repeatability of sink experiment, provide reliable experimental data for the behavior research of microplastics in water body, and help to more accurately simulate the distribution and migration process of microplastics in natural water, further provide important technical support and scientific basis for the treatment of microplastics pollution.

[0005] The utility model adopts the technical scheme of microplastics delivery device, including pipe body, pipe body two ends open, one end connects first baffle cover, the other end connects second baffle cover, pipe body one end is set up pipe shaft through-hole, pipe shaft through-hole is perpendicular to pipe body axis, first baffle cover is columnar, is engaged in pipe body port, first baffle cover side wall and pipe body inner wall abut, first baffle cover side wall is set up with pipe shaft through-hole corresponding pivot through-hole, pivot is connected with pivot through-hole and passes through first baffle cover and pipe body, pivot and first baffle cover fixed connection, pivot one end connects pivot fixed block, the other end connects knob, second baffle cover end face is set up aperture, pipe body outer wall connects pipe body fixed component.

[0006] The utility model has the characteristics that:

[0007] Second baffle cover includes baffle net and baffle ring, baffle net is arranged in pipe body port, baffle ring is sleeved on the outer wall of pipe body port, and the edge of baffle net is located between baffle ring and pipe body.

[0008] The outer wall of one end of the pipe body is provided with a pipe head thread, and the inner wall of the check ring is provided with a second check cover thread.

[0009] The rotating shaft comprises a rotating shaft and a first cover connecting section.

[0010] The rotating shaft, the first cover connecting section, the rotating shaft fixing block, the rotating shaft extension section and the rotating shaft first section are all connected through threads.

[0011] The rotating shaft, the first cover connecting section, the rotating shaft fixing block, the rotating shaft extension section and the rotating shaft first section are all connected through threads.

[0012] The rotating shaft, the first cover connecting section, the rotating shaft fixing block, the rotating shaft extension section and the rotating shaft first section are all connected through threads.

[0013] The pipe body fixing component comprises a fixing rod, and one end of the fixing rod is fixedly connected with a fixing ring.

[0014] The pipe body fixing component comprises a fixing rod, and one end of the fixing rod is fixedly connected with a fixing ring.

[0015] (1) The micro plastic feeding device for sink experiment is simple in structure and convenient to operate, the water inlet depth and the feeding position are flexibly adjustable, the fixed-point and fixed-quantity feeding of micro plastics is realized, hands do not need to be put into water, the safety and accuracy of the experiment are improved, the distribution and migration process of micro plastics in natural water bodies are more accurately simulated, and important technical support and scientific basis are further provided for the treatment of micro plastic pollution.

[0016] (2) In the utility model, the second check cover can be replaced, appropriate second check covers are selected according to different sizes of micro plastic particle sizes, the fixed-quantity feeding of micro plastics is ensured, the disturbance to water flow is effectively reduced, and the reliability and repeatability of experimental results are ensured. DRAWINGS

[0017] Figure 1 is a structure schematic view of the micro plastic feeding device of the utility model;

[0018] Figure 2 is a structure schematic view of the pipe body of the utility model;

[0019] Figure 3 is a structure schematic view of the second check cover of the utility model;

[0020] Figure 4 is a split schematic view of the second check cover and the pipe body of the utility model;

[0021] Figure 5 is a structure schematic view of the rotating shaft of the utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the first cover of this utility model;

[0023] Figure 7 This is a schematic diagram of the knob of this utility model;

[0024] Figure 8 This is a left view of the knob of this utility model;

[0025] Figure 9 This is a structural schematic diagram of the tube fixing component of this utility model;

[0026] Figure 10 This is a schematic diagram of the structure of microplastic mesh of different sizes according to this utility model;

[0027] Figure 11 This is a schematic diagram illustrating the process of microplastics being released from the hand until the release is complete.

[0028] Figure 12 This is a schematic diagram illustrating the process of releasing microplastics from start to finish according to this utility model.

[0029] Figure 13 This is a schematic diagram of the trajectory of the microplastics released by this utility model;

[0030] Figure 14 This is a schematic diagram of the trajectory of microplastics being delivered by hand.

[0031] In the diagram, 1. Shaft, 2. First stop cover, 3. Tube body fixing component, 4. Tube body, 5. Second stop cover, 6. First section of shaft, 7. Shaft extension section, 8. Shaft and first stop cover connecting section, 9. Shaft fixing block, 10. Shaft through hole, 11. Fixing ring, 12. Fixing rod, 13. Tube shaft through hole, 14. Tube head thread, 15. Second stop cover thread, 16. Guard mesh, 17. Large-size microplastic guard mesh, 18. Medium-size microplastic guard mesh, 19. Small-size microplastic guard mesh, 20. Knob, 21. Retaining ring, 22. First cylinder, 23. Second cylinder Detailed Implementation

[0032] The following detailed description is provided in conjunction with specific implementation methods.

[0033] like Figure 1As shown, this utility model is a microplastic dispensing device, including a tube body 4. The tube body 4 has a hollow cylindrical structure, which can reduce its resistance coefficient in water flow. A tube shaft through hole 13 is opened at one end of the tube body 4. The tube shaft through hole 13 is perpendicular to the axis of the tube body 4 and passes through the axis. The first cover 2 is a short cylinder and is fitted into the opening at one end of the tube body 4. Its side wall abuts against the inner wall of the tube body 4. At the same time, a rotating shaft through hole 10 corresponding to the tube shaft through hole 13 is opened on the side wall of the first cover 2. The rotating shaft 1 passes through the tube shaft through hole 13 and the rotating shaft through hole 10 to connect the tube body 4 and the first cover 2. The rotating shaft 1 is welded into the rotating shaft through hole 10 of the first cover 2 and is fixedly connected to the first cover 2. One end of the rotating shaft 1 passing through the tube body 4 and the first cover 2 is connected to the rotating shaft fixing block 9 by a thread, and the other end is connected to the knob 20 by a thread. The rotating shaft 1 and the first cover 2 are fixedly connected to ensure that the rotating shaft 1 can drive the first cover 2 accurately and stably. By rotating the knob 20, the first cover 2 is driven to rotate inside the tube 4 to realize its opening and closing functions.

[0034] The other end of the tube 4 is connected to a second cover 5. The end face of the second cover 5 has a hole, which is smaller than the diameter of the microplastic to prevent the microplastic from flowing out of the hole. The outer wall of the tube 4 is also fitted with a tube fixing component 3.

[0035] like Figure 2 As shown, a pipe head thread 14 is provided on the outer wall of one end of the pipe body 4 that connects to the second cover 5.

[0036] like Figure 3 As shown, the end face of the second cover 5 is a mesh 16, and the side wall of the second cover 5 is provided with a cover thread 15.

[0037] like Figure 4 As shown, the second cover 5 includes a mesh 16 and a retaining ring 21. The inner wall of the retaining ring 21 is provided with a second cover thread 15. The area of ​​the mesh 16 is larger than the cross-section of the tube body 4. The mesh 16 is placed over the end of the tube body 4, and the retaining ring 21 is inserted from the end of the tube body 4, so that the excess part of the mesh 16 is located between the retaining ring 21 and the tube body 4. The knob retaining ring 21 is connected to the tube body 4 by threads.

[0038] like Figure 5 As shown, the rotating shaft 1 has a cylindrical structure, consisting of a first section 6, an extension section 7, a connecting section 8 between the rotating shaft and the first cover, and a fixing block 9. A knob 20 is connected to one end of the first section 6, and the other end is threaded to the extension section 7, the connecting section 8, and the fixing block 9. The number of extension sections 7 can be increased or decreased according to the experimental depth requirements, allowing the operator to avoid putting their hands in the water and further preventing disturbance to the water flow. The cylindrical structure of the rotating shaft 1 helps reduce the drag coefficient and avoids sharp edges, thereby effectively reducing disturbance to the water body and improving the stability and smoothness of fluid flow.

[0039] Furthermore, the cylindrical structure of the rotating shaft 1 can be replaced by other shapes with the same or similar functions, such as elliptical or hexagonal shapes, as long as these alternative shapes can maintain a low drag coefficient and avoid sharp edges, thereby effectively reducing disturbance to the water body and improving the stability and smoothness of fluid flow.

[0040] like Figure 6 As shown, the first cover 2 is a short cylindrical body with a rotating shaft through hole 10 on its side wall corresponding to the tube shaft through hole 13.

[0041] like Figure 7 and Figure 8 As shown, the knob 20 includes a first cylinder 22, and several second cylinders 23 are fixedly connected to the side wall of the first cylinder 22. Each second cylinder 23 is spaced at the same angle. The bottom of the first cylinder 22 is threaded and threaded to the first section 6 of the rotating shaft.

[0042] like Figure 9 The pipe fixing component 3 includes a fixing rod 12 and a fixing ring 11. The fixing ring 11 is welded to the end of the fixing rod 12, so that the fixing rod 12 and the fixing ring 11 are fixedly connected. The fixing ring 11 is sleeved on the outer wall of the pipe body 4. The pipe fixing component 3 serves to fix the pipe body 4 and keep it stable in the water.

[0043] The tube fixing component 3 can also be replaced by other structures with the same fixing function, such as snap-fit ​​connectors or magnetic fasteners, as long as these alternative structures can firmly fix the tube 4 and keep it stable in water, without affecting the overall performance and experimental results of the microplastic dispensing device.

[0044] like Figure 10 As shown, the baffle 16 is replaceable and offers options for different sizes, including large-size microplastic baffle 17, medium-size microplastic baffle 18, and small-size microplastic baffle 19. The appropriate baffle 16 can be selected according to the particle size of the microplastics to meet experimental requirements.

[0045] In addition to using mesh structures of different sizes, the baffle 16 can also use alternative materials such as porous plates or sieves with a certain porosity, as long as these alternative materials can achieve quantitative dispensing of microplastics and minimize disturbance to the water flow while preventing microplastics from overflowing, thus meeting the experimental requirements for microplastic dispensing accuracy and water disturbance control.

[0046] Before adding microplastics, turn on the laboratory water circulation system and adjust it to the required flow rate to ensure that the water flow in the tank is stable and continuous.

[0047] Determine the particle size range of the microplastics according to the experimental requirements, and select a baffle of appropriate size based on the microplastic particle size to install on the microplastic baffle cover. Ensure that the baffle mesh aperture is smaller than the microplastic particle size, so as to effectively prevent microplastics from overflowing and minimize disturbance to the water flow.

[0048] The required quantity of microplastics is precisely calculated and weighed to ensure the reliability and repeatability of the experimental results. The first cover is opened by rotating the knob to allow the microplastics to smoothly enter the tube. The knob is then rotated again to close the first cover, ensuring the microplastics are completely retained within the tube.

[0049] Determine the horizontal position and vertical height of the microplastics to be placed. Based on the required distribution height of the microplastics for the experiment, flexibly increase or decrease the number of shaft extension sections used. During the adjustment process, ensure that the first section of the shaft is always outside the water surface when the tube is lowered into the water to avoid disturbing the water body by touching the water flow inside the tank with your hands.

[0050] Finally, holding the support rod, slowly and steadily place the tube containing the microplastics into the water tank, ensuring the relative position of the tube and the tank meets the experimental requirements. After the water flow stabilizes, slowly turn the knob to open the first cover. The microplastic particles flow smoothly out of the tube under the drag of the water flow, completing the microplastic dispensing. Throughout the experiment, the microplastics flowed out naturally with the water in the tank, without any other solutions entering the tank, avoiding interference from other water flows and improving the stability and smoothness of the fluid flow. It is crucial to closely observe the water flow and the effectiveness of the microplastic dispensing, adjusting relevant parameters promptly to ensure the smooth progress of the experiment and the accuracy of the results.

[0051] A diagram illustrating the process of manually releasing microplastics from start to finish is shown below. Figure 11 The diagram illustrates the process of releasing microplastics from the moment they are released until they are completely released, using a microplastic dispensing device. Figure 12As shown in the figure, black represents the release point. A detailed comparison reveals a significant difference in the length of the microplastics after release, especially when the density of the microplastics is lighter than water. The microplastic material used in this experiment was polypropylene (PP), spherical in shape with a particle size of 3 mm. During the experiment, 500 dyed spherical microplastic particles were released at fixed points and in fixed quantities each time. Firstly, the dyed microplastics are toxic and have an odor, making them unsuitable for prolonged handling. Secondly, while the hands could grasp them, the large quantity and small size of the particles made them prone to falling, leading to significant errors in the microplastic results. When released by hand, the length of the microplastics from the start to the end of release was approximately 67 cm. This is mainly because sweat on the hands adheres to the microplastics during release, preventing them from being released smoothly in one go. Repeated manipulation by hand is required for complete release, resulting in a slower release process and a correspondingly longer release length. However, when using an instrument, the release length of the microplastics was approximately 45 cm. At this point, the microplastics could exit the tube quickly and smoothly without adhesion, making the release process more efficient and the release length relatively shorter.

[0052] The movement trajectory of microplastics when using this invention to release microplastics is as follows: Figure 13 As shown, the trajectory of microplastics when they are dispensed by hand is as follows: Figure 14 As shown, the method of microplastic release significantly affected its flow behavior during the experiment. Observations of the release of 3mm spherical polypropylene (PP) revealed that when using a device, the microplastics flowed out of a fixed cross-section in a relatively orderly manner, forming a consistent trajectory. However, when released by hand, the microplastics scattered erratically. This was mainly due to the instability of hand movements, making it difficult to maintain a consistent speed and direction, resulting in uneven force on the microplastics. Simultaneously, the entry, movement, and opening of the hand disturbed the water flow, generating turbulence and eddies, causing the microplastics to move erratically in the water, with some even being carried upstream a short distance. Furthermore, the small particle size and lower density of microplastics compared to water make them susceptible to the influence of water and air currents. Sweat and other substances from the hands can also adhere to the microplastics, further affecting their release speed and direction. These factors combined resulted in the disordered flow of microplastics when released by hand, a stark contrast to the orderly flow observed when using a device. This leads to significant experimental errors, with substantial deviations in both the release time and the length of the released microplastics. In addition, PA, a microplastic material with a density greater than water and a particle size of 3.175 mm, was used in the experiment. A significant difference was found in the outflow trajectory of the PA microplastics when using this device and when they were dispensed by hand; some microplastics even exhibited a rotating descent, further leading to deviations in the experimental results.

[0053] Example 1

[0054] The microplastic dispensing device includes a tube body 4 with openings at both ends. One end is connected to a first cover 2, and the other end is connected to a second cover 5. A tube shaft through hole 13 is opened at one end of the tube body 4, and the tube shaft through hole 13 is perpendicular to the axis of the tube body 4. The first cover 2 is columnar and is engaged in the end of the tube body 4. The side wall of the first cover 2 abuts against the inner wall of the tube body 4. A rotating shaft through hole 10 corresponding to the tube shaft through hole 13 is opened on the side wall of the first cover 2. The rotating shaft 1 passes through the tube shaft through hole 13 and the rotating shaft through hole 10 to connect the tube body 4 and the first cover 2. The rotating shaft 1 is fixedly connected to the first cover 2. One end of the rotating shaft 1 is connected to a rotating shaft fixing block 9, and the other end is connected to a knob 20. A hole is opened on the end face of the second cover 5. A tube body fixing component 3 is connected to the outer wall of the tube body 4.

[0055] Example 2

[0056] The microplastic dispensing device includes a tube body 4 with openings at both ends. One end is connected to a first cover 2, and the other end is connected to a second cover 5. A tube shaft through hole 13 is opened at one end of the tube body 4, and the tube shaft through hole 13 is perpendicular to the axis of the tube body 4. The first cover 2 is columnar and is engaged in the end of the tube body 4. The side wall of the first cover 2 abuts against the inner wall of the tube body 4. A rotating shaft through hole 10 corresponding to the tube shaft through hole 13 is opened on the side wall of the first cover 2. The rotating shaft 1 passes through the tube shaft through hole 13 and the rotating shaft through hole 10 to connect the tube body 4 and the first cover 2. The rotating shaft 1 is fixedly connected to the first cover 2. One end of the rotating shaft 1 is connected to a rotating shaft fixing block 9, and the other end is connected to a knob 20. A hole is opened on the end face of the second cover 5. A tube body fixing component 3 is connected to the outer wall of the tube body 4.

[0057] The second cover 5 includes a mesh 16 and a retaining ring 21. The mesh 16 is disposed at the port of the pipe body 4, and the retaining ring 21 is sleeved on the outer wall of the port of the pipe body 4. The edge of the mesh 16 is located between the retaining ring 21 and the pipe body 4.

[0058] Example 3

[0059] The microplastic dispensing device includes a tube body 4 with openings at both ends. One end is connected to a first cover 2, and the other end is connected to a second cover 5. A tube shaft through hole 13 is opened at one end of the tube body 4, and the tube shaft through hole 13 is perpendicular to the axis of the tube body 4. The first cover 2 is columnar and is engaged in the end of the tube body 4. The side wall of the first cover 2 abuts against the inner wall of the tube body 4. A rotating shaft through hole 10 corresponding to the tube shaft through hole 13 is opened on the side wall of the first cover 2. The rotating shaft 1 passes through the tube shaft through hole 13 and the rotating shaft through hole 10 to connect the tube body 4 and the first cover 2. The rotating shaft 1 is fixedly connected to the first cover 2. One end of the rotating shaft 1 is connected to a rotating shaft fixing block 9, and the other end is connected to a knob 20. A hole is opened on the end face of the second cover 5. A tube body fixing component 3 is connected to the outer wall of the tube body 4.

[0060] The second cover 5 includes a mesh 16 and a retaining ring 21. The mesh 16 is disposed at the port of the pipe body 4, and the retaining ring 21 is sleeved on the outer wall of the port of the pipe body 4. The edge of the mesh 16 is located between the retaining ring 21 and the pipe body 4.

[0061] One end of the pipe body 4 is provided with a pipe head thread 14 on its outer wall, and the inner wall of the retaining ring 21 is provided with a second retaining cover thread 15. The pipe body 4 and the retaining ring 21 are threadedly connected.

[0062] Example 4

[0063] The microplastic dispensing device includes a tube body 4 with openings at both ends. One end is connected to a first cover 2, and the other end is connected to a second cover 5. A tube shaft through hole 13 is opened at one end of the tube body 4, and the tube shaft through hole 13 is perpendicular to the axis of the tube body 4. The first cover 2 is columnar and is engaged in the end of the tube body 4. The side wall of the first cover 2 abuts against the inner wall of the tube body 4. A rotating shaft through hole 10 corresponding to the tube shaft through hole 13 is opened on the side wall of the first cover 2. The rotating shaft 1 passes through the tube shaft through hole 13 and the rotating shaft through hole 10 to connect the tube body 4 and the first cover 2. The rotating shaft 1 is fixedly connected to the first cover 2. One end of the rotating shaft 1 is connected to a rotating shaft fixing block 9, and the other end is connected to a knob 20. A hole is opened on the end face of the second cover 5. A tube body fixing component 3 is connected to the outer wall of the tube body 4.

[0064] The rotating shaft 1 includes a rotating shaft and a first cover connecting section 8. One end of the rotating shaft and the first cover connecting section 8 is connected to the rotating shaft fixing block 9, and the other end is connected in sequence to the rotating shaft extension section 7 and the first section 6 of the rotating shaft. The other end of the first section 6 of the rotating shaft is connected to the knob 20.

[0065] Example 5

[0066] The microplastic dispensing device includes a tube body 4 with openings at both ends. One end is connected to a first cover 2, and the other end is connected to a second cover 5. A tube shaft through hole 13 is opened at one end of the tube body 4, and the tube shaft through hole 13 is perpendicular to the axis of the tube body 4. The first cover 2 is columnar and is engaged in the end of the tube body 4. The side wall of the first cover 2 abuts against the inner wall of the tube body 4. A rotating shaft through hole 10 corresponding to the tube shaft through hole 13 is opened on the side wall of the first cover 2. The rotating shaft 1 passes through the tube shaft through hole 13 and the rotating shaft through hole 10 to connect the tube body 4 and the first cover 2. The rotating shaft 1 is fixedly connected to the first cover 2. One end of the rotating shaft 1 is connected to a rotating shaft fixing block 9, and the other end is connected to a knob 20. A hole is opened on the end face of the second cover 5. A tube body fixing component 3 is connected to the outer wall of the tube body 4.

[0067] The rotating shaft 1 includes a rotating shaft and a first cover connecting section 8. One end of the rotating shaft and the first cover connecting section 8 is connected to the rotating shaft fixing block 9, and the other end is connected in sequence to the rotating shaft extension section 7 and the first section 6 of the rotating shaft. The other end of the first section 6 of the rotating shaft is connected to the knob 20.

[0068] The shaft is connected to the first cover connecting section 8, the shaft fixing block 9, the shaft extension section 7, and the first section 6 of the shaft by thread.

[0069] Example 6

[0070] The microplastic dispensing device includes a tube body 4 with openings at both ends. One end is connected to a first cover 2, and the other end is connected to a second cover 5. A tube shaft through hole 13 is opened at one end of the tube body 4, and the tube shaft through hole 13 is perpendicular to the axis of the tube body 4. The first cover 2 is columnar and is engaged in the end of the tube body 4. The side wall of the first cover 2 abuts against the inner wall of the tube body 4. A rotating shaft through hole 10 corresponding to the tube shaft through hole 13 is opened on the side wall of the first cover 2. The rotating shaft 1 passes through the tube shaft through hole 13 and the rotating shaft through hole 10 to connect the tube body 4 and the first cover 2. The rotating shaft 1 is fixedly connected to the first cover 2. One end of the rotating shaft 1 is connected to a rotating shaft fixing block 9, and the other end is connected to a knob 20. A hole is opened on the end face of the second cover 5. A tube body fixing component 3 is connected to the outer wall of the tube body 4.

[0071] The knob 20 includes a first cylinder 22, and a second cylinder 23 is fixedly connected to the side wall of the first cylinder 22.

[0072] Example 7

[0073] The microplastic dispensing device includes a tube body 4 with openings at both ends. One end is connected to a first cover 2, and the other end is connected to a second cover 5. A tube shaft through hole 13 is opened at one end of the tube body 4, and the tube shaft through hole 13 is perpendicular to the axis of the tube body 4. The first cover 2 is columnar and is engaged in the end of the tube body 4. The side wall of the first cover 2 abuts against the inner wall of the tube body 4. A rotating shaft through hole 10 corresponding to the tube shaft through hole 13 is opened on the side wall of the first cover 2. The rotating shaft 1 passes through the tube shaft through hole 13 and the rotating shaft through hole 10 to connect the tube body 4 and the first cover 2. The rotating shaft 1 is fixedly connected to the first cover 2. One end of the rotating shaft 1 is connected to a rotating shaft fixing block 9, and the other end is connected to a knob 20. A hole is opened on the end face of the second cover 5. A tube body fixing component 3 is connected to the outer wall of the tube body 4.

[0074] The knob 20 includes a first cylinder 22, and a second cylinder 23 is fixedly connected to the side wall of the first cylinder 22.

[0075] Knob 20 is threadedly connected to the first section 6 of the rotating shaft.

[0076] Example 8

[0077] The microplastic dispensing device includes a tube body 4 with openings at both ends. One end is connected to a first cover 2, and the other end is connected to a second cover 5. A tube shaft through hole 13 is opened at one end of the tube body 4, and the tube shaft through hole 13 is perpendicular to the axis of the tube body 4. The first cover 2 is columnar and is engaged in the end of the tube body 4. The side wall of the first cover 2 abuts against the inner wall of the tube body 4. A rotating shaft through hole 10 corresponding to the tube shaft through hole 13 is opened on the side wall of the first cover 2. The rotating shaft 1 passes through the tube shaft through hole 13 and the rotating shaft through hole 10 to connect the tube body 4 and the first cover 2. The rotating shaft 1 is fixedly connected to the first cover 2. One end of the rotating shaft 1 is connected to a rotating shaft fixing block 9, and the other end is connected to a knob 20. A hole is opened on the end face of the second cover 5. A tube body fixing component 3 is connected to the outer wall of the tube body 4.

[0078] The pipe fixing component 3 includes a fixing rod 12, one end of which is fixedly connected to a fixing ring 11, which is sleeved on the outer wall of the pipe body 4.

Claims

1. A microplastic dispensing device, characterized in that, The utility model provides a pipe body (4) including, the pipe body (4) both ends open, one end connects first cover (2), the other end connects second cover (5), the pipe body (4) one end sets up pipe axle through -hole (13), and pipe axle through -hole (13) is perpendicular with the axis of pipe body (4), first cover (2) is columnar, and is engaged in the pipe body (4) port, and first cover (2) side wall is butt joint with the inner wall of pipe body (4), the side wall of first cover (2) sets up the rotation shaft through -hole (10) corresponding with pipe axle through -hole (13), and rotation shaft (1) passes through pipe axle through -hole (13) and rotation shaft through -hole (10) and is connected with pipe body (4) and first cover (2), and rotation shaft (1) is fixedly connected with first cover (2), and rotation shaft (1) one end connects rotation shaft fixed block (9), and the other end connects knob (20), and second cover (5) end face sets up aperture, and the outer wall of pipe body (4) is connected with pipe body fixed component (3).

2. The microplastic dosing device according to claim 1, characterized in that The second cover (5) includes a cover net (16) and a cover ring (21), the cover net (16) is arranged at the port of the pipe body (4), and the cover ring (21) is sleeved on the outer wall of the port of the pipe body (4), and the edge of the cover net (16) is located between the cover ring (21) and the pipe body (4).

3. The microplastic dosing device of claim 2, wherein, The outer wall of one end of the pipe body (4) is provided with a pipe head thread (14), and the inner wall of the cover ring (21) is provided with a second cover thread (15), and the pipe body (4) is screw-connected with the cover ring (21).

4. The microplastic dosing device of claim 1, wherein, The rotation shaft (1) includes a rotation shaft and first cover connecting section (8), one end of the rotation shaft and first cover connecting section (8) is connected with the rotation shaft fixed block (9), and the other end is sequentially connected with a rotation shaft extension section (7) and a rotation shaft first section (6), and the other end of the rotation shaft first section (6) is connected with the knob (20).

5. The microplastic dosing device of claim 4, wherein, The rotation shaft and first cover connecting section (8), the rotation shaft fixed block (9), the rotation shaft extension section (7) and the rotation shaft first section (6) are screw-connected.

6. The microplastic dosing device of claim 1, wherein, The knob (20) includes a first cylinder (22), and the side wall of the first cylinder (22) is fixedly connected with a second cylinder (23).

7. The microplastic dosing device of claim 6, wherein, The knob (20) is screw-connected with the rotation shaft first section (6).

8. The microplastic dosing device of claim 1, wherein, The pipe body fixed component (3) includes a fixed rod (12), one end of the fixed rod (12) is fixedly connected with a fixed ring (11), and the fixed ring (11) is sleeved on the outer wall of the pipe body (4).

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