Nozzle structure with guide holes for supersonic jet milling and directional jetting

Abstract

The utility model relates to a supersonic jet milling and directional spraying nozzle structure with a guide hole, which comprises a nozzle, a first cone is arranged at one end of the nozzle, the diameter of the first cone is increased from inside to outside, and a guide pipe is arranged outside the first cone; the utility model relates to a jet pipe structure with material guide holes for supersonic jet milling and directional jet, which can enable lateral divergent airflow to move along the direction of a flow guide pipe and keep the airflow in the area to be jetted in a concentrated manner, and the jet pipe structure is not weak due to divergence. And the later crushing efficiency is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to solid material crushing technical field, specifically is a kind of supersonic airflow crushing directional injection's spray pipe structure with guide hole. BACKGROUND

[0002] The superfine crushing process of powder is actually the process that each particle in macroscopic powder is broken, fractured and refined under the action of external force, so that the performance index of the whole powder changes.

[0003] There are many methods for powder superfine crushing, and airflow crushing is one of the process methods for preparing micron-submicron fine powder.The method is powered by airflow, and the particles are crushed by high-speed movement and collision under the driving of high-speed airflow.Although this method is convenient, low in cost, less in preparation investment and widely used, there are still some new issues in the process of "micronization", i.e., how to keep most of the particles in the powder in a high kinetic energy state throughout the whole crushing process, and how to achieve the best effect of each collision of particles.

[0004] The fluidized bed impingement type airflow crusher usually consists of a hopper, a feeding system, a supersonic airflow nozzle, a crushing chamber and the like.The material is sent to the crushing chamber from the hopper during crushing, and the airflow enters the crushing chamber through the nozzle.The material is accelerated by the airflow of the nozzle and collides at the intersection point of high-speed jet, which is located at the center of the crushing chamber.The material is crushed by the high-speed impact of the airflow on the particles and the mutual collision between the particles.The crushed product is discharged from the upper part by the classifier along with the airflow, the tail gas is discharged into the dust collector, and the unqualified product is blocked by the classifier and falls back to the crushing chamber for further crushing.

[0005] As can be seen from the structure and working principle of the above device, the crushed material is driven by the high-speed airflow of the nozzle and moves towards the intersection point of the jet along with the airflow, and the powder has a certain movement time and distance at this time.The powder has a certain energy impact force after acceleration, and collides with the oppositely moving material to achieve crushing.Under the same pressure condition, how to make more particles enter the intersection point of particle jet at high speed becomes the key to solving the problem. SUMMARY

[0006] This part is intended to outline some aspects of the embodiments of the present application and briefly introduce some preferred embodiments.Some simplifications or omissions may be made in this part, the abstract of the specification and the utility model name to avoid obscuring the purpose of this part, the abstract of the specification and the utility model name, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0007] In view of the following technical problems in the prior art: the existing jet pipe airflow dispersion aftereffect is weakened.

[0008] To solve the above technical problems, the utility model provides the following technical scheme: a supersonic airflow crushing directional jet's jet pipe structure with guide hole, including,

[0009] The jet pipe is provided with a first cone at one end, the first cone increases in diameter from inside to outside, and a guide pipe is arranged outside the first cone.

[0010] As a preferred technical scheme of the supersonic airflow crushing directional jet's jet pipe structure with guide hole, the jet pipe is provided with an outer conical surface at one end.

[0011] As a preferred technical scheme of the supersonic airflow crushing directional jet's jet pipe structure with guide hole, a guide hole is arranged on the guide pipe corresponding to the outer conical surface.

[0012] As a preferred technical scheme of the supersonic airflow crushing directional jet's jet pipe structure with guide hole, the other end of the jet pipe is provided with a second cone, and the second cone and the first cone are communicated through a through groove.

[0013] As a preferred technical scheme of the supersonic airflow crushing directional jet's jet pipe structure with guide hole, the second cone has a cone angle of 36°, and the first cone has a cone angle of 18°.

[0014] As a preferred technical scheme of the supersonic airflow crushing directional jet's jet pipe structure with guide hole, the utility model further comprises a crushing chamber, the crushing chamber is provided with a mounting hole, and the jet pipe is fixed in the mounting hole.

[0015] As a preferred technical scheme of the supersonic airflow crushing directional jet's jet pipe structure with guide hole, a gas distribution bag is arranged outside the crushing chamber, and the gas distribution bag is connected with the jet pipe through a gas distribution pipe.

[0016] As a preferred technical scheme of the supersonic airflow crushing directional jet's jet pipe structure with guide hole, the crushing chamber is further provided with an observation window.

[0017] The supersonic airflow crushing directional jet's jet pipe structure with guide hole of the utility model can utilize the low utilization rate of the side edge divergent airflow capacity. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the premise of not deviating from the concept of the present application. Among them:

[0019] Fig. 1 The structure schematic view of the guide pipe provided on the spray pipe in the present application;

[0020] Fig. 2 The structure schematic view of the material guiding hole provided on the guide pipe in the present application;

[0021] Fig. 3 The external structure schematic view of the pulverizing chamber in the present application;

[0022] Fig. 4 The cross-sectional structure schematic view of the pulverizing chamber in the present application.

[0023] The drawings are as follows: guide pipe 102, outer conical surface 103, material guiding hole 102a, through groove 105, second conical body 104, first conical body 101, spray pipe 100, mounting hole 201, gas distribution bag 202, gas distribution pipe 203, pulverizing chamber 200, observation window 204. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purpose, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings of the specification.

[0025] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without deviating from the concept of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0026] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. In this specification, "in one embodiment" does not mean the same embodiment, nor is it an independent or alternative embodiment that excludes other embodiments.

[0027] Thirdly, the utility model is described in detail in combination with the schematic diagram, in the detailed description of the utility model embodiment, for the convenience of description, the sectional view of the device structure will be partially enlarged without the general proportion, and the schematic diagram is only an example, which should not limit the scope of the utility model protection here. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual production.

[0028] Embodiment 1

[0029] Referring to Figs. 1-4 The embodiment provides a supersonic gas flow crushing directional jet spray nozzle structure with a material guiding hole, which comprises a nozzle 100, and the nozzle 100 is provided with a first cone 101 at one end; the first cone 101 is provided with a guide pipe 102 outside.

[0030] The guide pipe 102 is welded to the nozzle 100.

[0031] The nozzle 100 is provided with an outer conical surface 103 at one end.

[0032] The outer conical surface 103 and the ring pipe 102a form a groove structure with a triangular cross section.

[0033] The guide pipe 102 is provided with a material guiding hole 102a corresponding to the outer conical surface 103.

[0034] The material guiding hole 102a can be provided with a plurality of holes in the circumferential direction of the nozzle 100; after the nozzle 100 sprays the gas flow from the first cone 101, a negative pressure is formed at the material guiding hole 102a, the material in the crushing chamber is sucked into the guide pipe 102 from the material guiding hole 102a, and the crushing effect is enhanced.

[0035] The nozzle 100 is provided with a second cone 104 at the other end, and the second cone 104 and the first cone 101 are communicated through a through body 105.

[0036] The taper of the second cone 104 is 36 degrees, and the taper of the first cone 101 is 18 degrees.

[0037] The utility model also comprises a crushing chamber 200, the crushing chamber 200 is provided with a mounting hole 201, and the nozzle 100 is fixed in the mounting hole 201; the crushing chamber 200 is provided with a gas distribution bag 202 outside, and the gas distribution bag 202 is connected with the nozzle 100 through a gas distribution pipe 203.

[0038] The crushing chamber 200 is also provided with an observation window 204.

[0039] Specifically, the gas distribution bag 202 is provided with an annular groove structure, the gas distribution pipes 203 are all communicated with the gas distribution bag 202, a gas supply pipeline is communicated with the gas distribution bag 202, and the gas enters the gas distribution bag 202 and is then dispersed into multiple paths into the gas distribution pipes 203.

[0040] The technical problem solved by the utility model is to improve the existing fluidized bed impingement jet mill nozzle structure, and a nozzle flow guide device is provided, thereby effectively solving the powder movement energy problem, that is, in the whole crushing process, most of the particles in the powder are always in a high kinetic energy state, and each collision between the particles achieves the best effect, thereby solving the problem of the weakened crushing effect caused by the weakened airflow energy divergence to the side in the original structure.

[0041] As known, the kinetic energy of an object is due to movement, that is, the energy of the object due to the speed. The kinetic energy is an important physical quantity describing the movement state of the object, and its size is equal to 1 / 2mv2. When the speed of the object is zero, its kinetic energy is of course zero, and the faster the speed, the greater the kinetic energy. According to this principle, in the crushing process of the jet mill, under the condition of a certain external force, the movement speed of each particle of the powder should be as fast as possible. It has been proved in practice that the faster the speed of the airflow, the faster the speed of the particles driven by the airflow, the greater the kinetic energy of the particles, and the better the crushing effect. Therefore, the utility model adds a set of flow guide device to the nozzle of the fluidized bed jet mill, so that the powder entering the crushing chamber from the bin is guided by the flow guide device, and the relatively concentrated airflow drives the material to be sprayed forward. The powder around the nozzle enters the nozzle again from the inlet of the flow guide device, and the relatively concentrated airflow continues to spray forward, and this part of the powder material has a large kinetic energy.

[0042] Using the device given in the embodiment, through nearly 500 times of tests, due to the high-intensity collision and shearing of the powder, the device can make the powder reach D90=0.3-3 microns. The crushing efficiency is improved by 30% compared with the existing fluidized bed jet mill, and the function reaches and exceeds the level of the international similar devices.

[0043] The technology can be applied to the field of medicine production, and the central particle size of the powder (75 microns or more) obtained from the traditional crushing process of traditional Chinese medicinal materials can be improved to 5-10 microns or less. Under the fineness condition, the breakage rate of the cells of the general medicinal materials is greater than or equal to 95%. Therefore, when the ultrafine powder of traditional Chinese medicine is taken, the effective components in the cells do not need to pass through the barrier established by the cell wall and cell membrane to be absorbed by the administration site, but are directly absorbed by the administration site. At the same time, the specific surface area of the ultrafine powder of traditional Chinese medicine is large, the contact area with the administration site is large, and the adhesion performance makes the medicine stay at the absorption site for a long time, so the absorption speed and degree of the effective components can be greatly improved, thereby achieving the treatment effect of rapid effect, high efficiency and long effect. This is undoubtedly beneficial to the acceleration of the treatment time and the improvement of the bioavailability of the human body.

[0044] When the device is used to crush pollen, the pollen breakage rate reaches 100%, so that the nutrients of the pollen can be fully released. When the device is used to process pearl powder, the particle size (0.7 microns) of the pearl powder is greatly smaller than the human body pores, so that the pearl powder is easily absorbed by the human body skin and the gastrointestinal tract. When the device is used, 65% of the particle size of the cough relieving medicine passes through 0.365 microns, so that the human body bioavailability is greatly improved.

[0045] It is understood that, during the development of any actual implementation, numerous implementation decisions can be made, as in any engineering or design project. Such development efforts, while perhaps complex and time-consuming, would be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure, and would not require undue experimentation.

[0046] It should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, and they should be included in the scope of the claims of the present application.

Claims

1. A structure of a supersonic gas flow comminution directional jet nozzle with a material guiding hole, characterized in that: Comprising, a nozzle (100) provided with a first taper (101) at one end, the first taper (101) increasing in diameter from inside to outside, and a guide pipe (102) provided outside the first taper (101).

2. The supersonic gas stream crushing directional jet nozzle structure with a material guiding hole according to claim 1, characterized in that: The nozzle (100) is provided with an outer taper (103) at one end.

3. The supersonic air jet milling directional jet nozzle structure with material guiding holes according to claim 2, characterized in that: The guide pipe (102) is provided with a material guiding hole (102a) corresponding to the outer taper (103).

4. The supersonic air jet pulverization directional jet structure with a material guide hole according to claim 3, characterized in that: The nozzle (100) is provided with a second taper (104) at the other end, and the second taper (104) and the first taper (101) are communicated through a through slot (105).

5. The supersonic air jet milling directional jet nozzle structure with material guiding holes according to claim 4, characterized in that: The second taper (104) has a taper of 36°, and the first taper (101) has a taper of 18°.

6. The supersonic gas stream crushing directional jet nozzle structure with a material guiding hole according to any one of claims 1-5, characterized in that: Further comprising a crushing chamber (200) provided with a mounting hole (201), and the nozzle (100) is fixed in the mounting hole (201).

7. The supersonic air jet comminution directional jet structure with material guiding apertures of claim 6, wherein: The crushing chamber (200) is provided with a gas distribution bag (202) outside, and the gas distribution bag (202) is connected with the nozzle (100) through a gas distribution pipe (203).

8. The supersonic air jet comminution directional jet nozzle structure with material guiding orifices according to claim 7, characterized in that: The crushing chamber (200) is further provided with an observation window (204).

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