Particle filling device for micron-sized dyeing particle generator

Abstract

A particle filling device for a micron-sized dyed particle generator belongs to the technical field of machinery, and comprises an external-screwing nut, an internal-screwing nut, an internal-screwing nut, an internal-screwing nut and an external-screwing nut, the bottom of the threaded transfer cavity is provided with threads, the outer side of the threaded transfer cavity is provided with screwing threads, the bottom threads of the threaded transfer cavity are connected and fastened with filling port threads of the particle generator, the filling port is converted into a filling cavity with a larger size, and the screwing threads are matched with the external-screwing nut to achieve rotation movement of the external-screwing nut; a springback groove is formed in the screwing direction thread and allows a sliding block of the external screwing nut to pass through, and springback is achieved in cooperation with pressure release of the pressure spring; the two ends of the pressure spring abut against and make contact with the inner wall of the top of the external-screwing nut and the bottom of the threaded transfer containing cavity correspondingly, and springback of the external-screwing nut is achieved through compression and release; and the spiral feeding rod is fixedly connected with the external-screwing nut and coaxially rotates along with the external-screwing nut, so that spiral downward feeding is realized. The particle filling efficiency can be improved, and atmospheric dissipation of particles is reduced.

Description

Technical Field

[0001] The invention relates to a particle filling device for a micron-level dyeing particle generator, belonging to the technical field of machinery. Background Art

[0002] The gas PIV test of liquid rocket engine components is used to visualize the internal and external flow fields of components and finely analyze the flow field state. On the one hand, it can be used to optimize the structure of research products, and on the other hand, it can be used to measure the flow characteristics of routine model products. The particle generator is a key device for dyeing the test medium.

[0003] To visualize the gas flow field, the medium must be dyed first. Gas PIV dyes the medium by mixing dye particles into the test gas medium through a dye particle generator. The dye particles have a particle size range of 0.2μm-10μm and are an extremely fine oxide powder. They have excellent followability to airflow disturbances and are easily dissipated into the environment, further posing an inhalation risk to operators. Based on the characteristics of particle dissipation, the process filling port aperture of the particle generator equipment is designed to be very small, which makes it difficult to effectively fill the particles. Summary of the invention

[0004] The technical problem solved by the present invention is to overcome the deficiencies of the prior art and provide a particle filling device for a micron-level dyeing particle generator, thereby improving the particle filling efficiency and reducing the atmospheric dissipation of particles.

[0005] The technical solution of the present invention is: a particle filling device for a micron-level dyeing particle generator, comprising:

[0006] An externally rotating nut with a plurality of sliding blocks provided on the inner wall;

[0007] The threaded conversion cavity has a thread at the bottom and a helical thread on the outside. The bottom thread is connected and fastened with the thread of the filling port of the particle generator to realize conversion of the filling port into a larger filling cavity, and the helical thread cooperates with the externally rotating nut to realize the rotational movement of the externally rotating nut; the helical thread is provided with a rebound groove to allow the slider of the externally rotating nut to pass through, and cooperate with the pressure release of the pressure spring to realize rebound;

[0008] The pressure spring has two ends that are in contact with the inner wall of the top of the externally rotating nut and the bottom of the threaded adapter cavity, respectively, and the externally rotating nut is rebounded by compression and release;

[0009] The spiral feeding rod is fixedly connected with the externally rotating nut and rotates coaxially with the externally rotating nut to realize spiral feeding downwards.

[0010] Furthermore, the sliders on the inner wall of the externally rotating nut are arranged in pairs, and the sliders are in the form of internal threads.

[0011] Furthermore, a recessed groove is provided at the center of the bottom of the externally rotating nut to limit the spiral feeding rod.

[0012] Furthermore, a threaded hole is opened in the externally rotating nut countersunk groove, and it is connected and fastened to the spiral feeding rod by a fastening screw.

[0013] Furthermore, the threaded adapter cavity is in the form of a coaxial stepped boss, the size of which increases from bottom to top, and the interface is converted into a cavity of a larger size through a conical transition section.

[0014] Furthermore, the outer side of the boss at the small end of the threaded adapter cavity is a standard external thread, which is used to achieve connection and fastening with an external device;

[0015] The outer side of the boss at the large end of the threaded adapter cavity is a threaded external thread, and rebound grooves are formed in pairs along the axial direction on the threaded thread;

[0016] The lower side of the large end of the threaded adapter cavity is in an external hexagonal shape, which is used to limit the movable spanner.

[0017] Furthermore, a boss structure is provided at the large end of the tapered surface of the inner wall of the threaded adapter cavity to limit the pressure spring; the pressure spring can be compressed and released periodically through structural coordination and reciprocating motion.

[0018] Furthermore, the spiral feeding rod is T-shaped, and the large end is fastened to the externally rotating nut by a fastening screw; a spiral structure is arranged on the outer side of the shaft of the spiral feeding rod for receiving and feeding materials.

[0019] Furthermore, the externally rotating nut is meshed with the threaded adapter cavity through the rotational thread and the slider, converting the circumferential thread rotation into axial movement, thereby compressing the pressure spring and causing the spiral feeding rod to transport and add particles downward; when the slider of the externally rotating nut moves to the rebound groove of the threaded adapter cavity, the elastic force of the pressure spring causes the slider to move upward through the rebound groove to achieve the rebound of the externally rotating nut and the spiral feeding rod.

[0020] Furthermore, the rebound of the spiral feeding rod generates vibration, which further causes the particles in the threaded adapter cavity and the particles on the spiral feeding rod to sink and fill.

[0021] The advantages of the present invention compared with the prior art are:

[0022] The dye particle filling device converts and expands the filling port of the particle generator into a large particle filling cavity through the transfer, and the one-way periodic rebound filling function realized by the structural design significantly improves the particle filling efficiency. The device cavity has no opening, which can significantly reduce the atmospheric dissipation of particles and reduce the probability of skin contact and inhalation by operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0024] Figure 1 This is a structural diagram of the dyeing particle filling device of the present invention; 1-external screw nut, 2-fastening screw, 3-pressure spring, 4-threaded adapter cavity, 5-screw feeding rod;

[0025] Figure 2 It is a schematic diagram of the structure of the rebound groove and the slider of the present invention;

[0026] Figure 3 It is a schematic diagram of the spiral feeding of the present invention. DETAILED DESCRIPTION

[0027] In order to better understand the above technical scheme, the technical scheme of the present invention is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical scheme of the present invention, rather than limitations on the technical scheme of the present invention. In the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other.

[0028] The following is a further detailed description of a particle filling device for a micron-sized dye particle generator provided by an embodiment of the present invention in conjunction with the accompanying drawings. Figure 1 , the specific implementation methods may include:

[0029] The outer screw nut 1 has a plurality of slide blocks on its inner wall;

[0030] The threaded conversion cavity 4 has a thread at the bottom and a helical thread on the outside, and is connected and fastened with the thread of the filling port of the particle generator through the thread at the bottom, so as to convert the filling port into a filling cavity with a larger size, and realize the rotational movement of the externally rotating nut 1 through the helical thread and the externally rotating nut 1; the helical thread is provided with a rebound groove, allowing the slider of the externally rotating nut 1 to pass through, and cooperates with the pressure release of the pressure spring 3 to realize rebound;

[0031] The pressure spring 3 has two ends that respectively contact with the inner wall of the top of the externally rotating nut 1 and the bottom of the threaded adapter chamber 4, and realizes the rebound of the externally rotating nut 1 through compression and release;

[0032] The spiral feeding rod 5 is fixedly connected to the externally rotating nut 1 and rotates coaxially with the externally rotating nut 1 to realize spiral feeding downward.

[0033] Furthermore, the sliders on the inner wall of the externally rotating nut 1 are arranged in pairs, and the sliders are in the form of internal threads. A recessed groove is provided at the center of the bottom of the externally rotating nut 1 to limit the position of the spiral feed rod 5. A threaded hole is provided in the recessed groove of the externally rotating nut 1, and the externally rotating nut 1 is connected and fastened to the spiral feed rod 5 by a fastening screw 2.

[0034] In a possible implementation, the threaded adapter cavity 4 is in the form of a coaxial stepped boss, which increases in size from bottom to top, and the interface is converted into a larger cavity through a tapered transition section. The outer side of the boss at the small end of the threaded adapter cavity 4 is a standard external thread, which is used to connect and tighten it with an external device;

[0035] The outer side of the boss at the large end of the threaded adapter cavity 4 is a rotating external thread, and rebound grooves are opened in pairs along the axial direction on the rotating thread;

[0036] The outer shape of the lower side of the large end of the threaded adapter cavity 4 is an external hexagonal shape, which is used to limit the movable spanner.

[0037] A boss structure is provided at the large end of the conical surface of the inner wall of the threaded adapter cavity 4 to limit the pressure spring 3; the pressure spring 3 can be compressed and released periodically through structural coordination and reciprocating motion.

[0038] Optionally, the spiral feeding rod 5 is T-shaped, and the large end is fastened to the externally rotating nut 1 by a fastening screw 2; a spiral structure is provided on the outer side of the shaft of the spiral feeding rod 5 for receiving and feeding materials.

[0039] In one possible implementation, the externally rotating nut 1 is meshed with the threaded adapter cavity 4 through the rotational thread and the slider, converting the circumferential thread rotation into axial movement, thereby compressing the pressure spring 3 and causing the spiral feed rod 5 to transport and add particles downward; when the slider of the externally rotating nut 1 moves to the rebound groove of the threaded adapter cavity 4, the elastic force of the pressure spring 3 causes the slider to move upward through the rebound groove to achieve the rebound of the externally rotating nut 1 and the spiral feed rod 5.

[0040] In a possible implementation, the rebound of the screw feeding rod 5 generates vibration, which further causes the particles in the threaded adapter cavity 4 and the particles on the screw feeding rod 5 to sink and fill.

[0041] In the solution provided in the embodiment of the present invention, a dye particle filling device is provided. The device is mainly composed of a threaded adapter cavity 4, a pressure spring 3, a spiral feeding rod 5, an externally rotating nut 1 and other parts. The structure is shown in FIG. Figure 1 shown.

[0042] The threaded adapter chamber 4 is connected and fastened with the filling port thread of the particle generator through its bottom thread, thereby realizing the function of converting the small filling port into a large filling chamber; the threaded adapter chamber 4 and the externally rotating nut 1 realize the rotational movement of the externally rotating nut 1 through the side threaded groove; the spiral feeding rod 5 moves with the externally rotating nut 1 to realize spiral downward feeding; the pressure spring 3 realizes the rebound function of the externally rotating nut 1 by compression and release.

[0043] like Figure 2 The threaded groove outside the threaded transition chamber 4 is provided with a rebound groove, which allows the inner wall slider of the externally rotating nut 1 to pass through, and cooperates with the spring pressure release to realize the rebound function. The combined application of the rotational thread, spring, and rebound groove realizes the filling function of the unidirectional periodic rotation rebound of the device.

[0044] like Figure 3 As shown, its working mode is:

[0045] (1) The spiral feeding rod 5 is fixedly connected to the externally rotating nut 1 by a fastening screw 2 to achieve coaxial rotation;

[0046] (2) The externally rotating nut 1 and the threaded adapter cavity 4 perform axial reciprocating motion through the pressure spring 3;

[0047] (3) The externally rotating nut 1 and the threaded transfer cavity 4 move axially through the side thread groove and the slider;

[0048] (4) The spiral thread on the side of the threaded adapter cavity 4 is provided with a rebound groove in the up-and-down direction.

[0049] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0050] The contents not described in detail in the specification of the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A particle filling device for a micron-sized dye particle generator, characterized in that: include: An externally rotating nut with a plurality of sliding blocks provided on the inner wall; The threaded conversion cavity has a thread at the bottom and a helical thread on the outside. The bottom thread is connected and fastened with the thread of the filling port of the particle generator to realize conversion of the filling port into a larger filling cavity, and the helical thread cooperates with the externally rotating nut to realize the rotational movement of the externally rotating nut; the helical thread is provided with a rebound groove to allow the slider of the externally rotating nut to pass through, and cooperate with the pressure release of the pressure spring to realize rebound; The pressure spring has two ends that are in contact with the inner wall of the top of the externally rotating nut and the bottom of the threaded adapter cavity, respectively, and the externally rotating nut is rebounded by compression and release; The spiral feeding rod is fixedly connected with the externally rotating nut and rotates coaxially with the externally rotating nut to realize spiral feeding downwards.

2. A particle filling device for a micron-sized dye particle generator according to claim 1, characterized in that: The sliders on the inner wall of the externally rotating nut are arranged in pairs, and the sliders are in the shape of internal threads.

3. A particle filling device for a micron-sized dye particle generator according to claim 1, characterized in that: A recessed groove is provided at the center of the bottom of the externally rotating nut for limiting the position of the spiral feeding rod.

4. A particle filling device for a micron-sized dye particle generator according to claim 1, characterized in that: A threaded hole is provided in the externally rotating nut recess, and the externally rotating nut is connected and fastened to the spiral feeding rod by a fastening screw.

5. A particle filling device for a micron-sized dye particle generator according to claim 1, characterized in that: The threaded adapter cavity is in the form of a coaxial stepped boss, with the size increasing from bottom to top, and the interface is converted into a cavity of larger size through a tapered transition section.

6. A particle filling device for a micron-sized dye particle generator according to claim 5, characterized in that: The outer side of the boss at the small end of the threaded adapter cavity is a standard external thread for connecting and fastening it to an external device; The outer side of the boss at the large end of the threaded adapter cavity is a threaded external thread, and rebound grooves are formed in pairs along the axial direction on the threaded thread; The lower side of the large end of the threaded adapter cavity is in an external hexagonal shape, which is used to limit the movable spanner.

7. A particle filling device for a micron-sized dye particle generator according to claim 1, characterized in that: The large end of the tapered surface of the inner wall of the threaded adapter cavity is provided with a boss structure for limiting the pressure spring; the pressure spring can be compressed and released periodically through structural coordination and reciprocating motion.

8. A particle filling device for a micron-sized dye particle generator according to claim 1, characterized in that: The spiral feeding rod is T-shaped, and the large end is fastened with an externally rotating nut through a fastening screw; a spiral structure is arranged on the outer side of the shaft of the spiral feeding rod for receiving and feeding materials.

9. A particle filling device for a micron-sized dye particle generator according to claim 1, characterized in that: The externally rotating nut is meshed with the threaded adapter cavity through the rotational thread and the slider, converting the circumferential thread rotation into axial movement, thereby compressing the pressure spring and causing the spiral feeding rod to transport and add particles downward; when the slider of the externally rotating nut moves to the rebound groove of the threaded adapter cavity, the slider moves upward through the rebound groove under the elastic force of the pressure spring to realize the rebound of the externally rotating nut and the spiral feeding rod.

10. A particle filling device for a micron-sized dye particle generator according to claim 9, characterized in that: The rebound of the spiral feeding rod generates vibration, which further causes the particles in the threaded adapter cavity and the particles on the spiral feeding rod to sink and fill.

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