CN111085134A

CN111085134A - Explosive acoustic resonance mixing arrangement

Info

Publication number: CN111085134A
Application number: CN201811241369.6A
Authority: CN
Inventors: 易文俊; 曲悦
Original assignee: Nanjing University of Science and Technology
Current assignee: Nanjing University of Science and Technology
Priority date: 2018-10-24
Filing date: 2018-10-24
Publication date: 2020-05-01

Abstract

The invention relates to an acoustic resonance mixing device for explosives and powders, which comprises a mixing container, a container cover body, an upper cover plate, a bottom plate and a plurality of connecting pieces, wherein the container cover body is arranged at the upper end of the mixing container in a covering manner, a first groove is formed in the lower surface of the upper cover plate, the upper end of the cover body is embedded into the first groove, a second groove is formed in the upper surface of the bottom plate, the bottom of the mixing container is embedded into the second groove, each connecting piece sequentially penetrates through a hole of the upper cover plate and a hole of the bottom plate, the lower end of each connecting piece is fixedly connected with a lower vibrating table, and. The invention realizes the uniform dispersion of materials by using the vibration exciter to output the vibration frequency which is close to or the same as the resonance frequency of the system of the materials to be mixed.

Description

Explosive acoustic resonance mixing arrangement

Technical Field

The invention relates to a preparation technology of explosives and powders, in particular to an acoustic resonance mixing device for explosives and powders.

Background

One explosive in the prior art is a fusion cast explosive consisting of HMX and TNT, and the power of the explosive is mainly determined by the content of high-energy explosive. Meanwhile, in order to make the explosive have lower sensitivity, micro-nano-grade explosive particles need to be added. The traditional mixing can not meet the requirement, and the acoustic resonance mixing technology is a novel mixing process for realizing uniform dispersion of materials by utilizing the vibration frequency which is close to or identical to the resonance frequency of a mixed material system and is output by a vibration exciter.

At present, the mixing modes of explosives and powders include paddle stirring, centrifugal stirring and screw and double-screw mixing. The traditional mixing mode is difficult to realize due to the high viscosity characteristic of the explosive and the process requirement on high efficiency and safety in the mixing process.

Disclosure of Invention

In order to solve the problems, the invention provides an explosive acoustic resonance mixing device which can realize uniform dispersion of high-viscosity solid-liquid two-phase explosive components under the action of a vibration exciter.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the utility model provides a gunpowder and explosive sound resonance mixing arrangement, includes mixing vessel, container lid, upper cover plate, bottom plate and many connecting pieces, and mixing vessel upper end is located to container lid, and the upper cover plate lower surface is equipped with first recess, in the first recess of lid upper end embedding, the bottom plate upper surface is equipped with the second recess, and the embedding of mixing vessel bottom in the second recess, every connecting piece passes the hole of upper cover plate and the hole of bottom plate in proper order, every connecting piece lower extreme and below shaking table rigid coupling, and fastener and upper cover plate connection are passed through to every connecting piece upper end, the shaking table can produce the sine wave of audio frequency.

Further, lid upper end outer wall and first recess clearance fit, mixing vessel bottom outer wall and second recess clearance fit.

Furthermore, each connecting piece is in transition fit with the corresponding unthreaded hole of the upper cover plate, and each connecting piece is in transition fit with the corresponding unthreaded hole of the bottom plate.

Furthermore, the connecting device comprises four connecting pieces which are uniformly distributed and arranged on the upper cover plate and the bottom plate.

Further, the mixing container and the container cover body are connected through threads and a sealing ring.

Further, the mixing container comprises an inner cavity, an outer shell and an insulating cavity arranged between the inner cavity and the outer shell, wherein the inner cavity is used for filling the solid energetic materials and the liquid explosives and powders.

Further, the device also comprises a steam generating device, and the heat insulation cavity is connected with the steam generating device.

Furthermore, the turning part of the inner cavity of the mixing container is provided with an arc chamfer.

Further, the connecting piece is a threaded rod.

Compared with the prior art, the invention has the remarkable advantages that: (1) the vibration exciter outputs the vibration frequency which is close to or the same as the resonant frequency of a system of the materials to be mixed, so that the novel mixing process for uniformly dispersing the materials is realized, and the mixing efficiency can be higher than that of a conventional mixing mode; (2) the acoustic resonance mixing has no contact between a mechanical rotating part and a material, and has the characteristics of good mixing uniformity, high safety, material saving, simplicity in cleaning and the like; (3) the invention is different from the traditional heating mode of the electric heating wire, adopts high-temperature steam for heating, and has the characteristics of high safety and reliable work; (4) the internal structure of the mixing container is designed into an arc chamfer, so that the phenomenon of local uneven mixing is avoided.

Drawings

FIG. 1 is a schematic structural diagram of an acoustic resonance mixing device for explosives and powders according to the invention.

FIG. 2 is a top view of the explosive acoustic resonance mixing device of the present invention.

Fig. 3 is a half sectional view taken along line a-a of fig. 2.

Detailed Description

The invention is further described with reference to the accompanying drawings.

As shown in fig. 1-3, a gunpowder and explosive sound resonance mixing device comprises a mixing container 4, a container cover body 3, an upper cover plate 2, a bottom plate 5 and a plurality of connecting pieces 1, wherein the container cover body 3 is arranged at the upper end of the mixing container 4 in a covering manner, a first groove is formed in the lower surface of the upper cover plate 2, the upper end of the cover body 3 is embedded into the first groove, a second groove is formed in the upper surface of the bottom plate 5, the bottom of the mixing container 4 is embedded into the second groove, each connecting piece 1 sequentially penetrates through a hole of the upper cover plate 2 and a hole of the bottom plate 5, the lower end of each connecting piece 1 is fixedly connected with a vibration table below, the upper end of each connecting piece 1 is connected with the upper cover plate. The purpose of uniform mixing is achieved through vibration in the mixing container 4, and the vibration exciter is used for outputting vibration frequency which is close to or the same as the resonant frequency of a system of materials to be mixed, so that the materials are uniformly dispersed. Preferably, the connecting element 1 is a threaded rod.

Preferably, the lower end of each connecting piece 1 is matched with a threaded hole in the vibrating table through bottom threads, and then forms a clamp of the container with the upper cover plate 2 and the bottom plate 5, five degrees of freedom of the container relative to the vibrating table are limited, so that the container is connected with the vibrating table, and the container and the vibrating table vibrate synchronously all the time when the vibrating table vibrates at high frequency along the Y axis.

Preferably, the upper end of each connecting element 1 is screwed to the upper cover plate 2 by means of a nut, exerting a certain axial force on the mixing container 4.

Preferably, lid 3 upper end outer wall and first recess clearance fit, mixing container 4 bottom outer wall and second recess clearance fit, with the clearance fit of recess realized mixing container 4 location on the two-dimensional plane.

Preferably, each connecting piece 1 is in transition fit with a corresponding unthreaded hole of the upper cover plate 2, and each connecting piece 1 is in transition fit with a corresponding unthreaded hole of the bottom plate 5.

Preferably, the connecting pieces specifically include four connecting pieces 1, and the four connecting pieces are evenly distributed and installed on the upper cover plate and the bottom plate.

Preferably, the mixing container 4 and the container cover 3 are connected through threads and a sealing ring, so that the sealing performance of the tank body can be improved.

The inner cavity of the mixing container is used for filling solid energetic materials and liquid explosives and powders, and the aim of uniformly mixing all explosive and powder components inside is fulfilled through the acoustic frequency resonance sine wave generated by the conduction vibration table.

The mixing container 4 comprises an inner cavity 6, an outer shell and an insulating cavity 7 arranged in the outer shell, wherein the inner cavity is used for filling solid energetic materials and liquid explosives and powders. The melting point of the carrier explosive is not more than 110 ℃ (the melting temperature of the liquid explosive is 93 ℃) because the explosive is dangerous, the requirements on safety can not be met by electric heating, and the requirements can be met by steam heating. The design of the hollow layer in the mixing container 4 can ensure that the solid-liquid mixed explosive inside the container can be fully heated and can also achieve the effect of continuous heat preservation.

The device also comprises a steam generating device, and the heat insulation cavity 7 is connected with the steam generating device (as shown in figure 3, a connecting interface is arranged on the mixing container 4). The steam generating device generates high-temperature steam which is input into the heat insulation cavity 7 of the mixing container 4, so that the liquid explosives and powders can maintain a certain temperature, and the effect of heating the explosives and powders is achieved.

The turning part of the inner cavity of the mixing container 4 is provided with an arc chamfer.

Through the structure, the mixing container 4 is reliably and fixedly connected with the vibration table.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a gunpowder and explosive sound resonance mixing arrangement, its characterized in that, including mixing vessel (4), container lid (3), upper cover plate (2), bottom plate (5) and a plurality of connecting piece (1), mixing vessel (4) upper end is located to container lid (3) lid, and upper cover plate (2) lower surface is equipped with first recess, embedding in lid (3) upper end in the first recess, bottom plate (5) upper surface is equipped with the second recess, and mixing vessel (4) bottom embedding in the second recess, hole and the hole of bottom plate (5) of upper cover plate (2) are passed in proper order in every connecting piece (1), and every connecting piece (1) lower extreme and below shaking table rigid coupling, every connecting piece (1) upper end and upper cover plate (2) rigid coupling, the shaking table can produce the sinusoidal wave of audio frequency.

2. An acoustic resonance mixing apparatus for explosives and powders according to claim 1, characterised in that the outer wall of the upper end of the lid (3) is in clearance fit with the first recess and the outer wall of the bottom of the mixing vessel (4) is in clearance fit with the second recess.

3. A device for acoustic resonance mixing of explosives and powders according to claim 1, characterised in that each connector (1) is transition fitted with a corresponding light aperture of the upper cover plate (2) and each connector (1) is transition fitted with a corresponding light aperture of the base plate (5).

4. An explosive acoustic resonance mixing device according to claim 1, characterized in that it comprises 4 connecting pieces (1), 4 connecting pieces (1) being evenly distributed.

5. The acoustic resonance mixing apparatus for explosives and powders according to claim 1, characterized in that the mixing vessel (4) and the vessel cover (3) are connected by a thread and a sealing ring.

6. The acoustic resonance mixing device for explosives and powders according to claim 1, characterized in that the mixing vessel (4) comprises an inner chamber (6) and an outer shell, the outer shell is internally provided with an insulating chamber (7), and the inner chamber (6) is used for filling solid energetic materials and liquid explosives and powders.

7. An explosive acoustic resonance mixing apparatus according to claim 6, wherein the solid energetic material is HMX and the liquid explosive is TNT.

8. A device according to claim 6, characterized in that it further comprises steam generating means, said insulated chamber (7) being connected to the steam generating means.

9. The acoustic resonance mixing device for explosives and powders according to claim 1, characterized in that the turning point of the inner cavity of the mixing container (4) is provided with a circular arc chamfer.

10. A pyrotechnic and explosive acoustic resonance mixing device according to claim 1, characterised in that the attachment (1) is a threaded rod.