Sample dispersing device

Abstract

The utility model provides a sample dispersing device and belongs to the technical field of laser particle size analyzers. According to the structure, a flow guide plate is fixedly connected in a pipe cavity and comprises a core column located in the center of the flow guide plate, the axis of the core column coincides with the axis of the pipe cavity, a plurality of rib plates are arranged outside the core column, a first outer screw thread is arranged on the outer side of a pipe opening, a cambered surface wall is arranged on the inner side of the pipe opening, and a ball head is arranged on the rear portion of an output end. And the front part of the output end is a straight pipe section. According to the utility model, the columnar pipe cavity with the flow guide plate is constructed, the core column on the flow guide plate is used as a support body, and the rib plates extending along the radial direction are arranged; when a sample fluid is guided into the pipe cavity, the sample fluid is limited by the uniformly distributed rib plates, so that local turbulence of the sample fluid is limited, the output fluid can be dispersed outwards in the radial direction in a more stable flow state, the dispersion uniformity is ensured, and the time for sample injection to reach a steady state is shortened. Moreover, the device is convenient to mount and dismount, and is convenient to clean and maintain regularly.

Description

Technical Field

[0001] This utility model relates to the field of laser particle size analyzer technology, specifically a sample dispersion device. Background Technology

[0002] A laser particle size analyzer, also known as a laser particle size distribution analyzer, is an instrument used to measure and analyze the abundance of physical particles. Based on the dispersion system, it is classified into wet testing instruments, dry testing instruments, and combined wet and dry testing instruments. Its principle is that during light propagation, the wavefront is confined by pores or particles of a scale equivalent to the wavelength. The emission from each elementary wave at the confined wavefront interferes in space, producing diffraction and scattering. The spatial distribution of diffracted and scattered light energy is related to the wavelength of the light wave and the size of the pores or particles. Using a laser as the light source, and with the light being monochromatic with a fixed wavelength, the spatial distribution of diffracted and scattered light energy is only related to the particle size. For the diffraction of a particle group, the quantity of each particle size determines the amount of light energy obtained at each specific angle. The proportion of light energy at each specific angle in the total light energy should reflect the abundance of each particle size. Following this approach, a mathematical and physical model characterizing the abundance of particle size classes and the light energy obtained at each specific angle can be established. This allows for the development of instruments to measure light energy, and the comparison between the light energy measured at a specific angle and the total light energy can deduce the abundance proportion of the corresponding particle size class in the particle group. Laser particle size analyzers rely on the sample feeder to distribute the sample on the optical path. To ensure the dispersion of the sample, a large initial velocity is generally used for the sample feed. Although this can ensure the maximum distribution range of the sample at the far end, the uneven velocity distribution and fluid instability result in significant turbulence at the outlet end, which takes a long time to reach a steady state. Moreover, the distribution uniformity is poor in the initial stage. Summary of the Invention

[0003] The technical problem to be solved by this invention is: how to add a dispersion device to the output end of the laser particle size analyzer sampler to help stabilize the flow state.

[0004] To achieve the above technical objectives, the present invention adopts the following technical solution:

[0005] A sample dispersion device includes a tube body, a guide plate, an output end, a pressure cap, an O-ring, a connecting pipe, a tube opening, a cavity, ribs, a core column, a ball head, a straight tube section, and a tube hole. The connecting pipe is located at the rear of the tube body, and the tube opening is located at the front of the tube body. The tube body has a cavity, and a guide plate is fixedly connected to the cavity. The guide plate includes a core column located at its center, the core column coinciding with the axis of the cavity. Several ribs are located outside the core column. A first external thread is located outside the tube opening, and an arc-shaped wall is located inside the tube opening. The rear of the output end is a ball head, and the front of the output end is a straight tube section. The ball head is embedded in the arc-shaped wall inside the tube opening. The pressure cap is threaded onto the first external thread outside the tube opening and is pressed onto the ball head. An O-ring is placed between the ball head and the pressure cap. The straight tube section extends through the tube hole in the center of the pressure cap.

[0006] Preferably, a second external thread is provided on the outer wall of the tube body, the connecting tube at the rear of the tube body is inserted into the output port of the injector, and an internal thread is provided on the inner wall of the output port of the injector. The second external thread on the outer wall of the tube body is threadedly connected to the internal thread on the inner wall of the output port of the injector and a rubber ring is provided.

[0007] Preferably, an annular platform is provided on the outer wall of the tube body, and a washer is abutted against the rear end of the annular platform. The lock nut is threaded onto the second external thread and pressed onto the washer. The lock nut and washer are supported between the front end of the injector's output port and the rear end of the annular platform.

[0008] Preferably, the cross-section of the core column is located at the center of the cross-section of the cavity, and the cross-section of the rib extends along the radial direction of the cross-section of the cavity.

[0009] Preferably, the included angle between any two adjacent ribs is equal.

[0010] Preferably, a plurality of flow guide grooves are provided on the inner wall of the straight pipe section, and the flow guide grooves are parallel to the axis of the straight pipe section.

[0011] Preferably, the number of ribs is 6 to 8.

[0012] In the above technical solution, the tube body is used to construct the flow path, the rear connecting tube is used to connect to the output port of the injector, the tube opening is used to connect to the pressure cap and the ball head, and the tube cavity is used to house the guide plate. The guide plate is mainly supported by the core column in its middle, and the ribs located outside the core column play a stabilizing role, so that the local flow direction of the fluid extends along the axis of the tube cavity as much as possible. The ball head at the rear of the output end is used to be embedded in the arc wall inside the tube opening and is pressed and fixed by the pressure cap connected to the outside of the tube opening with threads. An O-ring seal is used between the pressure cap and the ball head. This detachable output end makes it convenient to clean or replace it periodically; the straight tube section is used to eject the sample.

[0013] This invention can be connected to the output end of the injector via a threaded connection. In this case, a washer and a lock nut can be added between the output end of the injector and the annular platform on the outside of the tube body to provide support, limit the insertion depth of this invention into the output end of the injector, and facilitate installation and fixation.

[0014] This invention provides a sample dispersion device. The device comprises a cylindrical cavity with a guide plate, where a core column on the guide plate serves as a support, and radially extending ribs are provided. When the sample fluid is introduced into the cavity, it is constrained by the uniformly distributed ribs, limiting local turbulence and allowing the output fluid to disperse radially outward in a more stable flow pattern. This ensures uniform dispersion and shortens the time required to reach steady state after sample introduction. Furthermore, this invention is easy to install and disassemble, facilitating regular cleaning and maintenance. Attached Figure Description

[0015] Figure 1 This is the explosive head of this utility model;

[0016] Figure 2 This is a perspective view of the guide plate in this utility model;

[0017] Figure 3 This is an assembly drawing of this utility model;

[0018] Figure 4 This is a cross-sectional view of the present invention;

[0019] Figure 5 This is a partial sectional perspective view of the present invention in its working state;

[0020] Figure 6 This is a cross-sectional view of the present invention when it is in working condition;

[0021] In the picture:

[0022] Detailed Implementation

[0023] The specific embodiments of this utility model will be described in detail below. To avoid excessive and unnecessary details, well-known structures or functions will not be described in detail in the following embodiments. The approximate language used in the following embodiments can be used for quantitative descriptions, indicating that a certain degree of variation in quantity is permissible without changing the basic function. Unless otherwise defined, the technical and scientific terms used in the following embodiments have the same meaning as commonly understood by those skilled in the art to which this utility model pertains.

[0024] Example 1

[0025] A sample dispersion device, such as Figures 1-6As shown, the device includes a pipe body 1, a guide plate 2, an output end 3, a pressure cap 4, an O-ring 5, a connecting pipe 11, a pipe opening 12, a pipe cavity 13, a rib plate 21, a core column 22, a ball head 31, a straight pipe section 32, and a pipe hole 41. The connecting pipe 11 is located at the rear of the pipe body 1, and the pipe opening 12 is located at the front end of the pipe body 1. The pipe body 1 has a pipe cavity 13, and the guide plate 2 is fixedly connected to the pipe cavity 13. The guide plate 2 includes a core column 22 located at its center, and the axis of the core column 22 coincides with that of the pipe cavity 13. The core post 22 has several ribs 21 on its outside. The outer side of the tube opening 12 is provided with a first external thread. The inner side of the tube opening 12 is provided with an arc wall. The rear part of the output end 3 is a ball head 31. The front part of the output end 3 is a straight tube section 32. The ball head 31 is embedded in the arc wall inside the tube opening 12. The pressure cap 4 is threaded onto the first external thread on the outer side of the tube opening 12. The pressure cap 4 is pressed onto the ball head 31. An O-ring 5 is placed between the ball head 31 and the pressure cap 4. The straight tube section 32 extends out through the tube hole 41 in the middle of the pressure cap 4.

[0026] In the above technical solution, the tube body 1 is used to construct the flow path, the connecting tube 11 at its rear is used to connect to the output port of the injector, the tube opening 12 is used to connect to the pressure cap 4 and the ball head 31, and the tube cavity 13 is used to house the guide plate 2. The guide plate 2 has a core column 22 in its middle as the main support structure, and the rib plate 21 located outside the core column 22 plays a stabilizing role, so that the local flow direction of the fluid extends along the axis of the tube cavity 13 as much as possible. The ball head 31 at the rear of the output end 3 is used to be embedded in the arc wall inside the tube opening 12 and is pressed and fixed by the pressure cap 4 threaded to the outside of the tube opening 12. An O-ring 5 is used to seal between the pressure cap 4 and the ball head 31. This detachable output end 3 is convenient for periodic cleaning or replacement; the straight tube section 32 is used to eject the sample.

[0027] Example 2

[0028] A sample dispersion device, such as Figures 1-6As shown, the device includes a pipe body 1, a guide plate 2, an output end 3, a pressure cap 4, an O-ring 5, a connecting pipe 11, a pipe opening 12, a pipe cavity 13, a rib plate 21, a core column 22, a ball head 31, a straight pipe section 32, and a pipe hole 41. The connecting pipe 11 is located at the rear of the pipe body 1, and the pipe opening 12 is located at the front end of the pipe body 1. The pipe body 1 has a pipe cavity 13, and the guide plate 2 is fixedly connected to the pipe cavity 13. The guide plate 2 includes a core column 22 located at its center, and the axis of the core column 22 coincides with that of the pipe cavity 13. The core column 22 has several ribs 21 on its exterior. A first external thread is provided on the outer side of the nozzle 12, and an arc-shaped wall is provided on the inner side of the nozzle 12. The rear part of the output end 3 is a ball head 31, and the front part of the output end 3 is a straight tube section 32. The ball head 31 is embedded in the arc-shaped wall inside the nozzle 12. The pressure cap 4 is threaded onto the first external thread on the outer side of the nozzle 12 and presses onto the ball head 31. An O-ring 5 is placed between the ball head 31 and the pressure cap 4. The straight tube section 32 extends through the tube hole 41 in the middle of the pressure cap 4. A second external thread is provided on the outer wall of the tube body 1. The connecting tube 11 at the rear of the tube body 1 is inserted into the output port of the injector. An internal thread is provided on the inner wall of the output port of the injector. The second external thread on the outer wall of the tube body 1 is threadedly connected to the internal thread on the inner wall of the output port of the injector and a rubber ring is provided. An annular platform is provided on the outer wall of the tube body 1. A washer 7 abuts against the rear end of the annular platform. A lock nut 6 is threaded onto the second external thread and pressed onto the washer 7. The lock nut 6 and washer 7 are supported between the front end of the injector's output port and the rear end of the annular platform. The cross-section of the core column 22 is located at the center of the cross-section of the tube cavity 13. The cross-section of the rib plate 21 extends along the radial direction of the cross-section of the tube cavity 13. The included angle between any two adjacent rib plates 21 is equal. Several guide grooves are provided on the inner wall of the straight tube section 32, and the guide grooves are parallel to the axis of the straight tube section 32. The number of rib plates 21 is 6 to 8. In this embodiment, a threaded connection is used to connect with the output end of the injector. At this time, a washer 7 and a lock nut 6 are added between the output end of the injector and the annular platform on the outside of the tube body 1 to provide support, limit the insertion depth of this invention to the output end of the injector, and facilitate installation and fixation.

[0029] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, and improvements made within the scope of this utility model application should be included within the protection scope of this utility model.

Claims

1. A sample dispersion device, characterized in that... The tube includes a tube body (1), a guide plate (2), an output end (3), a pressure cap (4), an O-ring (5), a connecting pipe (11), a pipe opening (12), a tube cavity (13), a rib plate (21), a core column (22), a ball head (31), a straight pipe section (32), and a pipe hole (41). The connecting pipe (11) is provided at the rear of the tube body (1), and the pipe opening (12) is provided at the front end of the tube body (1). The tube body (1) has a tube cavity (13), and the guide plate (2) is fixedly connected in the tube cavity (13). The guide plate (2) includes a core column (22) located at its center. The axis of the core column (22) and the tube cavity (13) are aligned. The core column (22) has several ribs (21) on its outside. The outer side of the tube opening (12) is provided with a first external thread. The inner side of the tube opening (12) is provided with an arc wall. The rear part of the output end (3) is a ball head (31). The front part of the output end (3) is a straight tube section (32). The ball head (31) is embedded in the arc wall inside the tube opening (12). The pressure cap (4) is threaded onto the first external thread outside the tube opening (12). The pressure cap (4) is pressed onto the ball head (31). An O-ring (5) is placed between the ball head (31) and the pressure cap (4). The straight tube section (32) extends through the tube hole (41) in the middle of the pressure cap (4).

2. The sample dispersion device according to claim 1, characterized in that, A second external thread is provided on the outer wall of the tube body (1). The connecting tube (11) at the rear of the tube body (1) is inserted into the output port of the injector. An internal thread is provided on the inner wall of the output port of the injector. The second external thread on the outer wall of the tube body (1) is threadedly connected to the internal thread on the inner wall of the output port of the injector and a rubber ring is provided.

3. The sample dispersion device according to claim 2, characterized in that, An annular platform is provided on the outer wall of the tube body (1). A washer (7) is abutted against the rear end of the annular platform. A lock nut (6) is threaded onto the second external thread and pressed onto the washer (7). The lock nut (6) and the washer (7) are supported between the front end of the injector outlet and the rear end of the annular platform.

4. The sample dispersion device according to claim 1, characterized in that, The cross-section of the core column (22) is located at the center of the cross-section of the cavity (13), and the cross-section of the rib plate (21) extends along the radius of the cross-section of the cavity (13).

5. The sample dispersion device according to claim 1, characterized in that, The included angle between any two adjacent ribs (21) is equal.

6. The sample dispersion device according to claim 1, characterized in that, Several guide grooves are provided on the inner wall of the straight pipe section (32), and the guide grooves are parallel to the axis of the straight pipe section (32).

7. The sample dispersion device according to claim 1, characterized in that, The number of ribs (21) is 6 to 8.

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