CN112834166B - Tracer particle feeding device suitable for liquid flow field - Google Patents

Abstract

The invention provides a tracer particle delivery device suitable for a liquid flow field, comprising a delivery box, the delivery box is a barrel-shaped structure; a valve combiner, the valve combiner is connected to one end of the delivery box close to the liquid flow field, and the valve combiner includes A plurality of valve groups; including: a valve control gear group, the valve control gear group is set at the end of the delivery box away from the liquid flow field; the valve control gear group includes: an adjustment knob, and a gear is set at one end of the adjustment knob; a gear ring, the gear ring and The gears of the adjustment knob are meshed; a plurality of winding posts, one end of the winding post is covered with a pinion, and the pinion is meshed with the gear ring; one end of a plurality of thin ropes is fixed on the winding post, and the other end of the plurality of thin ropes is connected to the A plurality of valve groups in the valve combiner are connected respectively, and the valve control gear set controls the opening and closing of the valve combiner by pulling the string through the winding post. The invention can control and adjust the tracer particle concentration in the fluid after administration.

Description

A tracer particle delivery device suitable for liquid flow field

technical field

The invention specifically relates to a tracer particle delivery device suitable for a liquid flow field.

Background technique

At present, in the measurement of liquid flow fields (mostly water flow fields), most of the tracer particles are placed manually, and a few use tracer particle delivery devices (high-pressure drive) similar to gaseous flow fields, but the tracer particles under high pressure Particles will enter the flow field with a large initial velocity, which will cause large errors in the measurement, and the test equipment is more complicated.

Reference document 1: Chinese invention patent publication CN105890871A, publication date 2160824, discloses a tracer particle delivery device for PIV measurement of liquid flow field. The device includes a flow field liquid inlet pipeline, a mixing chamber, a delivery window and a flow field liquid outlet pipeline, which can evenly spread tracer particles in the measured flow field, and can add tracer particles or flow field liquid to the delivery window , to quickly, effectively and continuously adjust the particle concentration in the flow field.

However, the device in the reference document 1 is difficult to quickly mix the tracer particles evenly, which will lead to a high concentration of the newly added tracer particles and uneven delivery, thereby affecting the accuracy of the experiment; another disadvantage of the reference document 1 is that the applicable The range is small, and it needs to be connected to the pipeline to play a role, so it is not universal.

Comparative Document 2: Chinese Invention Patent Publication CN105403729A, publication date 2160316, discloses a tracer particle delivery device for surface velocity field measurement, including a load-bearing bracket composed of a frame and a screw, and a V-shaped bottom opening containing tracer particles. Storage box, rotating shaft, and power system; among them, the load-bearing bracket and the V-shaped storage box are connected by a screw to adjust the height of the V-shaped storage box, and the screw and the V-shaped storage box are fixedly welded; the rotating shaft is placed At the lower outlet of the storage box; the power system drives the rotating shaft to rotate, so that the tracer particles fall into the fluid from the lower outlet of the V-shaped storage box.

However, it is difficult to control the speed of the tracer particles entering the water in Comparative Document 2, which will cause large errors in the measurement and is not suitable for long-term and high-precision indoor model tests.

Therefore, there is a need for a tracer particle delivery device suitable for liquid flow fields, which can solve the problem that the particle concentration in the fluid is difficult to control after particle delivery, so as to meet the requirements of different measuring instruments for particle concentration; it can solve the problem of uneven delivery of particles The problem of reducing the initial velocity of the particles and making the measurement more accurate.

Contents of the invention

The invention provides a tracer particle delivery device suitable for a liquid flow field, capable of controlling the concentration of the tracer particles in the fluid after delivery, and adjusting the concentration of the tracer particles according to the requirements of different measuring instruments for the concentration of the tracer particles; capable of The tracer particles are evenly released, and the initial velocity of the tracer particles is reduced to make the measurement more accurate. Thereby, the deficiencies in the prior art are solved.

A tracer particle delivery device suitable for a liquid flow field, comprising a delivery box, the delivery box is a barrel-shaped structure; a valve combiner, the valve combiner is connected to one end of the delivery box close to the liquid flow field, and the valve Combiners include multiple valve groups; including:

A valve control gear set, the valve control gear set is arranged at the end of the delivery box away from the liquid flow field; the valve control gear set includes:

An adjusting knob, one end of which is sleeved with a gear;

a gear ring meshing with the gear of the adjustment knob;

A plurality of winding posts, one end of the winding post is covered with a pinion, and the pinion is meshed with the gear ring; one end of a plurality of thin ropes is fixed on the winding post, and the other ends of the plurality of thin ropes are connected to the A plurality of valve groups in the valve combiner are connected respectively, and the valve control gear set controls the opening and closing of the valve combiner by pulling the string through the winding post.

With such a structure, tracer particles are placed in the drop box. Turn the adjustment knob to drive the gear set on the adjustment knob, and then the gear drives the gear ring to rotate, and the gear ring drives other small gears meshing with it; the pinion drives the winding post to rotate, and finally achieves the effect of loosening or tightening the string Effect. By controlling the length of the string, the opening size of the valve group is controlled, and finally the control of the injection speed and concentration of the tracer particles is realized. In this way, the concentration of tracer particles in the fluid after delivery can be controlled, and the concentration of tracer particles can be adjusted according to the requirements of different measuring instruments for the concentration of tracer particles; speed, making the measurement more accurate.

Further, the valve control gear set also includes:

An anti-movement wall, the anti-movement wall is an annular structure, its inner diameter is larger than the gear ring, and the anti-movement wall is fixed on the inner wall of the delivery box;

A plug, the plug is sleeved on the anti-movement wall, one end of the plug is provided with a limit tooth, the limit tooth at one end of the plug engages with the gear ring, and the other end is provided with a terminal for easy insertion and removal of the plug.

With this structure, the anti-movement wall is fixed on the inner wall of the delivery box, which has the effect of fixing and supporting the valve control gear set. The plug can move in a small range on the anti-moving wall, and the plug can be pulled out. When the plug is pulled out, the limit teeth of the plug are separated from the gear ring, and the gear ring can rotate. When the plug is inserted, the stop teeth of the plug The limit teeth are in contact with and engaged with the gear ring, thereby fixing the gear ring.

Further, the valve combiner includes a plurality of single-layer valve combiners, and the single-layer valve combiner is sealingly connected to the end of the delivery box away from the valve control gear set.

Further, the single-layer valve combiner includes:

A sieve plate, the sieve plate is provided with a plurality of sieve holes;

A plurality of second winding post holes, the second winding post holes are arranged on the edge of the sieve plate, the second winding post holes pass through the winding post, and the winding post is rotatably connected to the second winding post hole, The number of the second winding post holes is the same as the number of winding posts;

Multiple valve groups;

The valve group includes: two parallel sliding tracks and two magnetic sliders;

There is a magnetic attraction force between the two magnetic sliders, and the two magnetic sliders are arranged between two parallel sliding rails. One end of the magnetic slider is provided with a tether ring, and the tether ring is connected to the The string described above.

With such a structure, the sieve holes of the sieve plate are closed when the two magnetic sliders are closed. When the magnetic slider is opened, the sieve holes of the sieve plate are gradually opened, and the degree of opening depends on the degree of opening of the magnetic slider. The magnetic slider is pulled by the string, and the string is tightened by turning the winding post, so the magnetic slider is opened. When the winding post is turned to release the string, due to the magnetism of the magnetic sliders, the two magnetic sliders between the sliding tracks attract each other, and the opening degree is narrowed by the magnetic attraction force, and finally closed. By adjusting the opening degree of the valve group to control the injection speed of solid or liquid tracer particles, this process effectively ensures the injection speed and uniformity of the tracer particles entering the fluid through the sieve. Moreover, the sieve hole of the valve combiner of the present invention adopts vertical perforation, so that the tracer particles will not be blocked when falling, and the effect of continuous falling can be achieved.

Further, the sliding track is provided with a front baffle and a rear baffle, and the front baffle and the rear baffle are arranged at extreme positions where the magnetic slider moves on the sliding track;

A cleaning bar is also provided at the middle position of the sliding track, and the cleaning bar is in contact with the surface of the magnetic slider.

Adopting such a structure can effectively prevent the magnetic slider from falling off the sliding track when the valve group is opened. By setting the cleaning bar, when the magnetic slider is opened, the original tracer particles on the top of the magnetic slider are blocked by the cleaning bar, thereby avoiding the concentration change.

Further, the valve combiner also includes:

A plurality of pulleys, the shafts of which are vertically fixed on the sieve plate to change the direction of movement of the string;

A plurality of concave curved surface rings, the plurality of concave curved surface rings form a ring surrounding the valve group, and the concave curved surface ring is provided with an outlet hole, and the outlet hole fixes the position of the string.

With such a structure, by fixing multiple pulleys at specific positions on the sieve plate, the string can change the direction of motion through the pulley without hindering its force transmission, and better plan the layout of the string and the outlet hole. Fix the outlet position of the string, thereby preventing multiple strings from being entangled with each other, and can better use the winding post.

Further, the present invention also includes an electric stirrer connected with the valve control gear set, and the electric stirrer is used to stir the tracer particles in the drop box.

Further, the electric mixer includes:

A motor box, the motor box is provided with a motor;

A rotating track, which is arranged on the bottom surface of the motor box adjacent to the drop box;

Stirring rod, described stirring rod is arranged on the rotating track, and one end of stirring rod is connected with motor, and the other end stretches into throwing box.

With such a structure, the electric agitator is connected to the upper end of the valve control gear set, and the electric agitator, the valve control gear set and the closed valve combination form a closed barrel structure. This allows the tracer particles to be agitated with a motorized stirrer prior to release to ensure a consistent concentration. When the tracer particles are solid, the electric mixer can also pulverize them and stir them evenly, without manual pulverization, which is convenient and quick.

Further, the electric agitator is provided with a first winding post hole, and the first winding post hole is a through hole, and the end of the adjustment knob away from the gear passes through the first winding post hole.

With such a structure, one end of the adjustment knob can protrude from the electric stirrer, which is convenient for operation.

Further, other components except the magnetic slider are made of non-magnetic materials.

With such a structure, the force of the magnetic slider is prevented from being disturbed.

The beneficial effects of the present invention are as follows:

1. The present invention can control the concentration of tracer particles in the fluid after administration, and can adjust the concentration of tracer particles according to the requirements of different measuring instruments for the concentration of tracer particles.

2. The present invention can evenly release the tracer particles, and reduce the initial velocity of the tracer particles when they are released, so that the measurement is more accurate.

3. The present invention uses an electric stirrer to stir the tracer particles, so as to better ensure its uniformity and facilitate operation.

4. The present invention can adjust the concentration of the tracer particles according to the requirements of the test device, which is more flexible and adaptable, thereby reducing the cost.

5. The sieve hole of the valve combiner of the present invention adopts vertical perforation, so that the tracer particles will not be blocked when they fall, and the effect of continuous falling can be achieved.

Description of drawings

Fig. 1 is the three-quarter section three-dimensional diagram of structural representation of the present invention;

Fig. 2 is the sectional view of structural representation of the present invention;

Fig. 3 is the structural representation of the valve control gear set in the present invention;

Fig. 4 is the detailed structure diagram of plug in the valve control gear set in the present invention;

Fig. 5 is the structural representation of electric stirrer among the present invention;

Fig. 6 is the top view of the valve combiner among the present invention;

Fig. 7 is a schematic structural view of a single-layer valve combiner in the valve combiner of the present invention;

Fig. 8 is a top view of the single-layer valve combiner in the valve combiner of the present invention;

Fig. 9 is a structural schematic diagram of a valve group in the present invention;

Reference signs:

1. Electric mixer; 11. Motor box; 12. The first winding post hole; 13. Rotating track; 14. Stirring rod; 2. Valve control gear set; 21. Adjusting knob; 22. Gear ring; 23. Anti- Moving wall; 24, plug; 25, pinion; 26, winding post; 3, throwing box; 4, valve combiner; 41, second winding post hole; 42, valve group; 421, sliding track; 422 , Rear baffle; 423, Magnetic slider; 425, Cleaning bar; 424, Front baffle; 426, Tether ring; 43, Pulley; 44, Concave surface ring; 45, Sieve hole plate; 46, outlet hole.

Detailed ways

Apparently, the embodiments described below are some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be interpreted in a broad sense.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as there is no conflict with each other.

Example 1

As shown in Figures 1, 2 and 3, a tracer particle delivery device suitable for liquid flow fields includes a delivery box 3, the delivery box 3 is a barrel-shaped structure; a valve combiner 4, the valve combination The device 4 is connected to one end of the delivery box 3 close to the liquid flow field, and the valve combiner 4 includes a plurality of valve groups 42; including:

A valve control gear set 2, the valve control gear set 2 is arranged on the end of the delivery box 3 away from the liquid flow field; the valve control gear set 2 includes:

An adjustment knob 21, one end of the adjustment knob 21 is sheathed with a gear;

A gear ring 22, the gear ring 22 meshes with the gear of the adjustment knob 21;

A plurality of winding posts 26, one end of the winding post 26 is covered with a pinion 25, and the pinion 25 is engaged with the gear ring 22; one end of a plurality of thin ropes is fixed on the described winding post 26, and a plurality of said The other end of the string is respectively connected to a plurality of valve sets 42 in the valve combiner 4 , and the valve control gear set 2 controls the opening and closing of the valve combiner 4 by pulling the string through the winding post 26 .

With such a structure, the tracer particles are placed in the delivery box 3 . Turn the adjustment knob 21 to drive the gear sleeved on the adjustment knob 21, and then the gear drives the gear ring 22 to rotate, and the gear ring 22 drives other small gears 25 meshed with it; The effect of opening or tightening the string. By controlling the length of the string, the opening size of the valve group 42 is controlled, and finally the control of the injection speed and concentration of the tracer particles is realized. In this way, the concentration of tracer particles in the fluid after delivery can be controlled, and the concentration of tracer particles can be adjusted according to the requirements of different measuring instruments for the concentration of tracer particles; speed, making the measurement more accurate.

As shown in Figure 3, the valve control gear set 2 also includes:

One anti-movement wall 23, described anti-movement wall 23 is an annular structure, and its inner diameter is greater than the gear ring 22, and the anti-movement wall 23 is fixed on the inner wall of the delivery box 3;

A plug 24, the plug 24 is sleeved on the anti-moving wall 23, one end of the plug 24 is provided with a limit tooth, the limit tooth at one end of the plug 24 is meshed with the gear ring 22, and the other end is provided with a stop for easy insertion and removal. The end of the plug 24.

With such a structure, the anti-movement wall 23 is fixed on the inner wall of the delivery box 3, which has the effect of fixing and supporting the valve control gear set 2. The plug 24 can move in a small range on the anti-moving wall 23, and the plug 24 can be pulled out. When the plug 24 is pulled out, the stop teeth of the plug 24 are separated from the gear ring 22, and the gear ring 22 can rotate. When the plug 24 is inserted, the stop teeth of the plug 24 contact and mesh with the gear ring 22 , thereby fixing the gear ring 22 .

As shown in FIGS. 6 and 7 , the valve combiner 4 includes a plurality of single-layer valve combiners, and the single-layer valve combiner is sealingly connected with the end of the delivery box 3 away from the valve control gear set 2 .

The single-layer valve combiner includes:

A sieve plate 45, said sieve plate 45 is provided with a plurality of sieve holes;

A plurality of second winding post holes 41, the second winding post holes 41 are arranged on the edge of the sieve plate 45, the second winding post holes 41 pass through the winding posts 26, the winding posts 26 and the second winding posts The wire post holes 41 are rotatably connected, and the number of the second winding post holes 41 is the same as the number of winding posts 26;

a plurality of valve groups 42;

As shown in FIG. 9, the valve group 42 includes: two parallel sliding rails 421 and two magnetic sliders 423;

There is a magnetic attraction force between the two magnetic sliders 423, and the two magnetic sliders 423 are arranged between two parallel sliding rails 421, and one end of the magnetic sliders 423 is provided with a tether ring 426. Tether loop 426 connects the string.

With such a structure, when the two magnetic sliders 423 are closed, the sieve holes of the sieve plate 45 are in a closed state. When the magnetic slider 423 is opened, the sieve holes of the sieve plate 45 are gradually opened, and the degree of opening depends on the degree of opening of the magnetic slider 423 . The magnetic slider 423 is pulled by the string, and the string is tightened by rotating the winding post 26, so the magnetic slider 423 is opened. When rotating the winding post 26 to release the string, due to the magnetism of the magnetic slider 423, the two magnetic sliders 423 between the sliding tracks 421 attract each other, and the opening degree is reduced by the magnetic attraction force, and finally closed. By adjusting the opening degree of the valve group 42 to control the injecting speed of the solid or liquid tracer particles, this process effectively ensures the injecting speed and uniformity of the tracer particles entering the fluid through the sieve holes. Moreover, the sieve hole of the valve combiner 4 of the present invention adopts vertical perforation, so that the tracer particles will not be blocked when they fall, and the effect of continuous falling can be achieved.

The sliding track 421 is provided with a front baffle plate 424 and a rear baffle plate 422, and the front baffle plate 424 and the rear baffle plate 422 are arranged at the extreme position where the magnetic slider 423 moves on the sliding track 421;

The middle position of the sliding track 421 is also provided with a cleaning bar 425 , and the cleaning bar 425 is in contact with the surface of the magnetic slider 423 .

Adopting such a structure can effectively prevent the magnetic slider 423 from falling off the sliding track 421 when the valve group 42 is opened. By setting the cleaning bar 425, when the magnetic slider 423 is opened, the original tracer particles on the top of the magnetic slider 423 are blocked by the cleaning bar, thereby avoiding the concentration change.

As shown in Figure 6, the valve combiner 4 also includes:

A plurality of pulleys 43, the shaft of the pulley 43 is vertically fixed on the sieve plate 45 to change the direction of motion of the string;

A plurality of concave curved surface rings 44, a plurality of concave curved surface rings 44 form a ring surrounding the valve group 42, and the concave curved surface ring 44 is provided with an outlet hole 46, and the wire outlet hole 46 fixes the position of the string .

With such a structure, by fixing a plurality of pulleys 43 at specific positions on the sieve plate 45, the string can change the direction of motion through the pulley 43 without hindering the transmission of its force, and better plan the arrangement of the string , the wire outlet hole 46 fixes the wire outlet position of the string, thereby preventing multiple strings from being entangled with each other, and the winding post 26 can be used better.

As shown in FIG. 5 , the present invention also includes an electric stirrer 1 connected to the valve control gear set 2 , and the electric stirrer 1 is used to stir the tracer particles in the drop box 3 .

Described electric stirrer 1 comprises:

A motor box 11, the motor box 11 is provided with a motor;

A rotary track 13, said rotary track 13 is arranged on the bottom surface of the motor box 11 near the drop box 3;

Stirring rod 14, described stirring rod 14 is arranged on the rotating track 13, and one end of stirring rod 14 is connected with motor, and the other end stretches into throwing box 3.

With such a structure, the electric agitator 1 is connected to the upper end of the valve control gear set 2, and the electric agitator 1, the valve control gear set 2 and the closed valve combiner 4 form an airtight barrel structure. In this way, the electric stirrer 1 can be used to stir the tracer particles before releasing the tracer particles, so as to ensure a consistent concentration thereof. When the tracer particles are solid, the electric stirrer 1 can also pulverize them and stir them uniformly without manual pulverization, which is convenient and fast.

The electric mixer 1 is provided with a first winding post hole 12 , the first winding post hole 12 is a through hole, and the end of the adjusting knob 21 away from the gear passes through the first winding post hole 12 .

With such a structure, one end of the adjustment knob 21 can protrude from the electric mixer 1, which is convenient for operation.

Except for the magnetic slider 423, other parts are all non-magnetic materials.

With such a structure, the force of the magnetic slider 423 is prevented from being disturbed.

The beneficial effects of the present invention are as follows:

1. The present invention can control the concentration of tracer particles in the fluid after administration, and can adjust the concentration of tracer particles according to the requirements of different measuring instruments for the concentration of tracer particles.

2. The present invention can evenly release the tracer particles, and reduce the initial velocity of the tracer particles when they are released, so that the measurement is more accurate.

3. The present invention uses the electric stirrer 1 to stir the tracer particles, so as to better ensure its uniformity and facilitate operation.

4. The present invention can adjust the concentration of the tracer particles according to the requirements of the test device, which is more flexible and adaptable, thereby reducing the cost.

5. The sieve hole of the valve combiner 4 of the present invention adopts vertical perforation, so that the tracer particles will not be blocked when they fall, and the effect of continuous falling can be achieved.

Example 2

This embodiment adopts the same device as that in Embodiment 1, the difference is that this embodiment will describe the method of connecting and arranging the strings in the invention.

The valve group 42 group linkage system of the present invention is as shown in Figure 8, a high-strength string is tied on the tether ring 426 at the tail end of the magnetic slider 423 in the valve group 42, and the stretching direction of the string is changed from the outlet hole through the pulley 43. 46 , around the concave curved surface ring 44 and finally connected with the winding post 26 . The stringing method of the string is as follows, where Ⅰ～Ⅳ is the number of the valve group 42, a～p is the number of the pulley 43, and A～Q is the number of the outlet hole 46. Take the valve group 42 in the upper semicircle in Figure 8 as an example:

No. Ⅰ left end: a→H, right end: p→J; No. Ⅱ left end: E, right: b→a→H; No. Ⅲ left end: o→p→J, right end: M; No. Ⅳ left end: C, right end: c→e→B; the upper end of number V: b→a→H, the lower end: f→d→B; the upper end of number VI: o→p→J, the lower end: k→m→P; the left end of number VII: n→l→ P, right end: O; left end of number VIII: A, right end: g→d→B; left end of number IX: g→d→B, right end: h→f→d→B; left end of number X: h→f→d→ B, right end: i→k→m→P; left end of number Ⅺ: i→k→m→P, right end: j→m→P; left end of number Ⅻ: j→m→P, right end: Q.

After the string exits from the wire outlet hole 46 , it is wound clockwise around the winding post 26 , and a section of the string is fixed on the winding post 26 .

The strings of the rest of the valve groups 42 are connected and arranged in the same way as above, and will not be repeated.

When the valve combiner 4 has multiple single-layer valve combiners, the valve groups 42 corresponding to the same screen hole on the two single-layer valve combiners are perpendicular to each other to avoid excessive magnetic attraction interference.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the scope of protection of the present invention.

Claims (8)

1. A tracer particle throwing device suitable for a liquid flow field comprises a throwing box (3), wherein the throwing box (3) is of a barrel-shaped structure; the valve combiner (4) is connected to one end, close to the liquid flow field, of the feeding box (3), and the valve combiner (4) comprises a plurality of valve groups (42); it is characterized by comprising:

the valve control gear set (2), the valve control gear set (2) is arranged at one end of the throwing box (3) far away from the liquid flow field; the valve control gear set (2) comprises:

one end of the adjusting knob (21) is sleeved with a gear;

a gear ring (22), the gear ring (22) being engaged with a gear of the adjustment knob (21);

the winding device comprises a plurality of winding posts (26), wherein one end of each winding post (26) is sleeved with a small gear (25), and the small gear (25) is meshed with a gear ring (22); one ends of a plurality of strings are fixed on the wrapping posts (26), the other ends of the strings are respectively connected with a plurality of valve groups (42) in the valve combiner (4), and the valve control gear set (2) pulls the strings through the wrapping posts (26) to control the opening and closing of the valve combiner (4);

the valve combiner (4) comprises a plurality of single-layer valve combiners, and the single-layer valve combiners are hermetically connected with one end, far away from the valve control gear set (2), of the throwing box (3);

the single layer valve combiner comprises:

the screen mesh plate (45), a plurality of screen meshes are arranged on the screen mesh plate (45);

the second winding post holes (41) are formed in the edge of the screen plate (45), the winding posts (26) penetrate through the second winding post holes (41), the winding posts (26) are rotatably connected with the second winding post holes (41), and the number of the second winding post holes (41) is the same as that of the winding posts (26);

a plurality of valve groups (42);

the valve group (42) comprises: two parallel sliding rails (421) and two magnetic sliders (423);

there is magnetic attraction between two magnetic slider (423), two magnetic slider (423) set up two parallels between slip track (421), magnetic slider (423) one end is provided with tether ring (426), tether ring (426) connect the string.

2. The trace particle dispensing device suitable for liquid flow field according to claim 1, wherein the valve control gear set (2) further comprises:

the anti-moving wall (23) is of a circular ring structure, the inner diameter of the anti-moving wall (23) is larger than that of the gear ring (22), and the anti-moving wall (23) is fixed on the inner wall of the throwing box (3);

the plug (24), plug (24) cover is established on preventing moving wall (23), and plug (24) one end is provided with spacing tooth, and the spacing tooth and the gear ring (22) meshing of plug (24) one end, the other end are provided with and are convenient for pull out and insert the end of plug (24).

3. The tracer particle feeding device suitable for the liquid flow field according to claim 1, wherein the sliding track (421) is provided with a front baffle (424) and a rear baffle (422), and the front baffle (424) and the rear baffle (422) are arranged at extreme positions of the magnetic slider (423) moving on the sliding track (421);

the middle position of the sliding track (421) is also provided with a cleaning stop bar (425), and the cleaning stop bar (425) is in contact with the surface of the magnetic sliding block (423).

4. The trace particle dispensing device suitable for use in a liquid flow field according to claim 1, wherein the valve combiner (4) further comprises:

a plurality of pulleys (43), wherein the shafts of the pulleys (43) are vertically fixed on the sieve plate (45) to change the moving direction of the thin ropes;

the valve group (42) is characterized by comprising a plurality of concave curved surface rings (44), a circular ring surrounding the valve group (42) is formed by the concave curved surface rings (44), wire outlet holes (46) are formed in the concave curved surface rings (44), and the positions of the strings are fixed by the wire outlet holes (46).

5. The tracer particle dispensing device applicable to liquid flow fields according to claim 1, further comprising an electric stirrer (1), wherein the electric stirrer (1) is connected with the valve control gear set (2), and the electric stirrer (1) is used for stirring the tracer particles in the dispensing box (3).

6. Tracer particle dosing device for liquid flow fields according to claim 5, characterized in that the electric stirrer (1) comprises:

the motor box (11), wherein a motor is arranged in the motor box (11);

the rotating track (13), the rotating track (13) is arranged on the bottom surface of the motor box (11) close to the throwing box (3);

the stirring rod (14) is arranged on the rotating track (13), one end of the stirring rod (14) is connected with the motor, and the other end of the stirring rod extends into the throwing box (3).

7. The tracer particle releasing device for the liquid flow field according to claim 6, wherein the electric stirrer (1) is provided with a first spool hole (12), the first spool hole (12) is a through hole, and one end of the adjusting knob (21) far away from the gear passes through the first spool hole (12).

8. The tracer particle delivery device suitable for liquid flow fields according to any of claims 1-7, wherein the components other than the magnetic slider (423) are made of non-magnetic materials.

Images