CN113318968A - Energetic material device that sieves - Google Patents
Energetic material device that sieves Download PDFInfo
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- CN113318968A CN113318968A CN202110595030.1A CN202110595030A CN113318968A CN 113318968 A CN113318968 A CN 113318968A CN 202110595030 A CN202110595030 A CN 202110595030A CN 113318968 A CN113318968 A CN 113318968A
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- arch breaking
- sieving
- screening
- energetic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
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- Combined Means For Separation Of Solids (AREA)
Abstract
The invention relates to an energetic material sieving device which comprises a bracket, a vibration source, a force transmission rod assembly and a sieving main machine, wherein the sieving main machine is arranged in an explosion-proof area and used for sieving energetic materials; the bracket and the vibration source are arranged in a non-explosion-proof area, and the vibration source is arranged on the bracket; the dowel bar assembly is connected with the vibration source and the screening main machine and is used for transmitting the vibration force of the vibration source to the screening main machine; wherein, explosion-proof district with non-explosion-proof district adopts baffle or wall body to separate, and the energetic material sieving mechanism that this application provided has solved among the prior art technical problem that equipment of sieving can not satisfy energetic material components of a whole that can function independently screening safety requirement.
Description
Technical Field
The invention relates to the technical field of energetic material powder sieves, in particular to an energetic material sieving device.
Background
The energetic material contains an oxidizing component and a combustion component, can continuously generate oxidation-reduction reaction without the participation of external substances, releases huge energy for a short time, and has three substances which are the most basic and traditional energetic materials: propellant, propellant and explosive.
Sieving the energy-containing powder is a key process for preparing the solid propellant, and aims to firstly remove hard foreign matters, particularly metal foreign matters, once the hard foreign matters enter the next process, the mixed propellant does not reach the standard to cause economic loss if the mixed propellant is light, and accidents are caused if the mixed propellant does not reach the standard; secondly, the loose material blocks formed by moisture absorption are broken and dispersed, which is beneficial to more uniform material mixing in the subsequent mixing process.
The sieving equipment in the prior art is mainly used for distinguishing the granularity, the design and the production of the sieving equipment pay more attention to the service life of a product and the structural stability of the product, but the sieving equipment of the energy-containing powder has the requirements on the equipment and also pays more attention to the safety problem, the traditional sieving equipment is used for the split sieving of the energy-containing material, the material energy is easily excited, and serious safety accidents are possibly caused, so that the sieving equipment of the energy-containing powder, which is specially used for sieving the energy-containing material powder and has high reliability and safety, is necessary to be provided.
Disclosure of Invention
Based on the expression, the invention provides an energetic material sieving device, and aims to solve the technical problem that the sieving equipment in the prior art cannot meet the safety requirement of the split sieving of energetic materials.
The technical scheme for solving the technical problems is as follows:
a sieving device for energetic materials, which comprises a bracket, a vibration source, a force transmission rod component and a sieving main machine,
the screening host is arranged in the explosion-proof area and used for screening the energetic materials;
the bracket and the vibration source are arranged in a non-explosion-proof area, and the vibration source is arranged on the bracket;
the dowel bar assembly is connected with the vibration source and the screening main machine and is used for transmitting the vibration force of the vibration source to the screening main machine;
wherein the explosion-proof area and the non-explosion-proof area are separated by a partition plate or a wall body.
Compared with the prior art, the technical scheme of the application has the following beneficial technical effects:
this application mainly used sieves energetic material, because energetic material is flammable explosive characteristics, this application sets up vibration source and screening host computer respectively in explosion-proof district and the non-explosion-proof district that separates each other, with guarantee the vibration source not with energetic material direct contact, adopt the transmission of vibration power of transmission pole subassembly with the vibration source to the screening host computer simultaneously, guarantee the normal transmission of vibration power, guarantee energetic material's screening and normally go on, this application passes through above-mentioned structural design, security and reliability when effectively having increased energetic material screening.
On the basis of the technical scheme, the invention can be further improved as follows.
Furthermore, the screening host computer includes broken mechanism and the sieve material mechanism of encircleing, broken mechanism install in sieve material mechanism's top, the vibration source includes two excitation mechanisms, two excitation mechanisms install in on the support, the dowel bar subassembly includes two dowel bars, two the one end of dowel bar is connected two respectively excitation mechanism, the other end is connected respectively broken mechanism and sieve material mechanism.
Furthermore, each excitation mechanism comprises a mounting plate and two excitation sources, the two excitation sources are respectively and symmetrically mounted on two sides of the mounting plate, and the mounting plate is connected with the corresponding dowel bar.
Further, the excitation source is an eccentric motor.
The arch breaking mechanism comprises an arch breaking box, material distributing plates and a plurality of arch breaking cones, wherein a feed port is formed in the upper end of the arch breaking box, a discharge port is formed in the lower end of the arch breaking box, the material distributing plates are obliquely arranged in the middle of the arch breaking box and are close to the feed port, the number of the material distributing plates is two, the upper ends of the two material distributing plates are close to each other, and the lower ends of the two material distributing plates are far away from each other; the arch breaking cones are arranged in parallel at the positions, close to the discharge hole, of the arch breaking boxes to form a wavy shape, the middle parts of the arch breaking cones protrude upwards to form wave crests, wave troughs are formed between every two adjacent arch breaking cones, gaps for the energetic materials to penetrate through are reserved between every two adjacent arch breaking cones, and the outer sides of the arch breaking boxes are fixedly connected with the corresponding force transmission rods;
the mechanism of sieving is formed with the sieve import including sieve workbin and screen cloth, the upper end of sieve workbin, and the lower extreme forms the export of sieve material, screen cloth horizontal installation in sieve workbin inside, the outside of sieve workbin with correspond dowel steel fixed connection.
Further, the screen is of a stainless steel grid structure, and the mesh size of the screen is 10 meshes.
Further, a first flange is arranged at the position, corresponding to the discharge hole, of the arch breaking box; the sieve workbin corresponds the position of sieve material export installs the second flange, just the cloth bag pipe is installed to the lower extreme of sieve workbin.
Furthermore, the arch breaking mechanism and the sieving mechanism are coated with a composite dielectric coating on the wall in contact with the energetic material.
Furthermore, the arch breaking box, the screening box and the screen are all grounded through metal structures.
Furthermore, the arch breaking box and the screening box are both hung and installed by two flat belts, and the two dowel bars are horizontally arranged.
Drawings
Fig. 1 is a schematic structural diagram of an energetic material screening device provided by an embodiment of the present invention;
FIG. 2 is a schematic view of the mounting structure of the vibration source, the force-transmitting rod assembly and the screening machine of FIG. 1;
FIG. 3 is a schematic diagram of a detailed structure of the screening main unit in FIG. 1;
FIG. 4 is a schematic diagram of the screen to ground connection in an embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a support; 2. a vibration source; 3. a force transfer rod assembly; 4. screening the main machine; A. an explosion-proof area; B. a non-explosion area; 21. an excitation mechanism; 211. mounting a plate; 212. an excitation source; 31. a dowel bar; 41. an arch breaking mechanism; 42. a material screening mechanism; 411. breaking an arch box; 412. a material distributing plate; 413. breaking the arch vertebra; 41a, a feed inlet; 41b and a discharge hole; 51. a copper strip; 52. a rubber plate; 53. and (4) bolts.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that spatial relationship terms, such as "under", "below", "beneath", "below", "over", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary terms "under" and "under" can encompass both an orientation of above and below. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations) and the spatial descriptors used herein interpreted accordingly.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. The "connection" in the following embodiments is understood as "electrical connection", "communication connection", or the like if the connected circuits, modules, units, or the like have electrical signals or data transmission therebetween.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.
The energetic material contains an oxidizing component and a combustion component, can continuously generate oxidation-reduction reaction without the participation of external substances, releases huge energy for a short time, and has three substances which are the most basic and traditional energetic materials: propellant, propellant and explosive.
Among them, early black powders, traditional nitro explosives such as trinitrotoluene (TNT), nitrate explosives such as Nitroglycerin (NG), nitramine explosives such as hexogen (RDX) and octogen (HMX), high density high nitrogen compounds such as Trinitroazetidine (TNAZ), hexanitrohexaazaisowurtzitane (HNIW/CL-20), diaminodinitroethylene (FOX-7) and Octanitrocubane (ONC), and energetic propellants such as polyglycidyl ether (GAP) are included in the category of energetic materials.
The application takes octogen (HMX) as an example for description, the octogen (HMX) has the scientific name of cyclotetramethylene tetranitramine and explosive, belongs to flammable and explosive dangerous goods, one of the components of common solid propellant is white granular crystal, and the octogen (RDX) is used as a homolog, has four crystal forms of alpha, beta, gamma and delta, and is only beta type stable at normal temperature. HMX has slightly higher impact sensitivity than TNT, is easy to detonate, has better chemical stability than hexogen (RDX), has smaller 50 percent explosion critical impact energy than other propellant materials, but has higher cost,
as shown in fig. 1, the present embodiment provides an energetic material screening device, which comprises a bracket 1, a vibration source 2, a dowel bar assembly 3 and a screening host 4.
The screening host 4 is arranged in the explosion-proof area A and is used for screening the HMX powder.
The support 1 and the vibration source 2 are arranged in the non-explosion-proof area B, and the vibration source 2 is arranged on the support 1.
The dowel bar assembly 3 is connected with the vibration source 2 and the screening main machine 4 and is used for transmitting the vibration force of the vibration source 2 to the screening main machine 4;
the explosion-proof area A and the non-explosion-proof area B are separated by a wall, and in other embodiments, the explosion-proof area A and the non-explosion-proof area B can be separated by a partition board made of other non-combustible materials.
The vibration source 2 and the screening host 4 are respectively provided with the two mutually-separated explosion-proof areas A and the non-explosion-proof areas B, so that the explosion-proof safety of materials when screening the HMX powder can be effectively improved, in addition, energetic materials generally have certain toxicity, and certain poisoning reaction can be caused when operators inhale the material dust, for example, serious spasm can be caused to human bodies due to the inhalation of the HMX powder, and the carcinogenic risk also exists, so that the separation of the vibration source 2 and the screening host 4 can enable the operators to effectively keep away from the material dust, the working safety of the operators is guaranteed, and the possibility of dust inhalation of the workers is reduced.
Specifically, in the embodiment of the present application, as shown in fig. 2, the screening main machine 4 includes an arch breaking mechanism 41 and a screening mechanism 42, the arch breaking mechanism 41 is installed above the screening mechanism 42, the vibration source 2 includes two vibration exciting mechanisms 21, the two vibration exciting mechanisms 21 are installed on the support 1, the dowel bar assembly 3 includes two dowel bars 31, one end of each of the two dowel bars 31 is connected to each of the two vibration exciting mechanisms 21, and the other end of each of the two dowel bars 31 is connected to each of the arch breaking mechanism 41 and the screening mechanism 42.
It is understood that the force transmission rod 31 passes through the wall when being installed, and a sealing cover is generally installed at both sides of the force transmission rod 31 connected to the wall to prevent dust from leaking.
Each excitation mechanism 21 includes an installation plate 211 and two excitation sources 212, the two excitation sources 212 are respectively and symmetrically installed on two sides of the installation plate 211, and the installation plate 211 is connected with the corresponding dowel bar 31.
Generally, a vibration source of the conventional excitation is an eccentric motor, an electromagnetic vibrator, a gas vibrator, or the like.
The working principle of the electromagnetic vibrator is that power frequency alternating current is applied to an exciting coil of the vibrator after unidirectional half-wave rectification, effective energy is applied to the coil in the first half period of a sine wave, the coil is electrified to attract the vibrating armature to move, no effective energy is applied to the coil in the second half period of the sine wave after the half-wave rectification, the coil is electrified to release the armature, and thus the armature vibrates in a reciprocating manner to generate exciting force. The device has the advantages of simple structure, and is mainly used for being installed on the lower wall of a chute or a guide groove and used for exciting vibration and blanking.
The working principle of the gas vibrator is that the gas flow is used for pushing the piston to move, and the gas vibrator is divided into two stages. And in the ascending stage, airflow pushes the piston to ascend after air is supplied, the airflow is automatically discharged from the exhaust port, and in the descending stage, the high-pressure airflow is switched along the air channel groove to push the piston to descend when the airflow ascends to the stroke end. This completes one cycle and then oscillates back and forth. The advantages are safety and energy saving, and can adjust exciting force and frequency by adjusting pressure and flow of inlet air, and the disadvantages are that the pressure and flow of air flow are not easy to control, the response speed is slow, so the vibration force and frequency are not easy to control, and compared with electromagnetic vibration and eccentric motor vibration, the vibration frequency is higher, and the amplitude is smaller.
The working principle of the eccentric motor is that a group of adjustable eccentric blocks are respectively arranged at two ends of a motor rotor shaft, and the centrifugal force generated by the high-speed rotation of the eccentric blocks is utilized to obtain the exciting force. The size of the exciting force can be changed by adjusting the included angle between the eccentric blocks, the exciting frequency can be changed by adjusting the input frequency of the motor, and the control mode is simple.
In the embodiment, the eccentric motors are used as the excitation sources, when the eccentric motors work, the eccentric motors rotate to generate inertia force, the generated inertia force is resolved and then is counteracted by component force in the direction perpendicular to the force transfer rod 31, and resultant force changes according to a sine rule along the direction of the force transfer rod 31, so that the corresponding arch breaking mechanism 41 or the material sieving mechanism 42 makes linear reciprocating motion.
Specifically, as shown in fig. 3, the arch breaking mechanism 41 includes an arch breaking box 411, two distributing plates 412 and a plurality of arch breaking cones 413, a feed inlet 41a is formed at the upper end of the arch breaking box 411, a discharge outlet 41b is formed at the lower end of the arch breaking box 411, the distributing plates 412 are obliquely installed in the middle of the arch breaking box 411 and are close to the feed inlet 41a, the number of the distributing plates 412 is two, and the upper ends of the two distributing plates 412 are close to each other and the lower ends thereof are far away from each other; the arch breaking cones 413 are arranged in parallel at the positions, close to the discharge hole 41b, of the arch breaking boxes 411 to form a wave shape, wherein the middle parts of the arch breaking cones 413 protrude upwards to form wave crests, wave troughs are formed between every two adjacent arch breaking cones 413, gaps for penetration of energetic materials are reserved, and the outer sides of the arch breaking boxes 411 are fixedly connected with the corresponding force transmission rods 31.
The sieving mechanism 42 comprises a sieving box 421 and a sieve screen 422, the upper end of the sieving box 421 is provided with a sieving inlet 42a, the lower end is provided with a sieving outlet 42b, the sieve screen 422 is horizontally arranged inside the sieving box 421, and the outer side of the sieving box 421 is fixedly connected with the corresponding dowel bar 31.
During operation, the octogen powder is easy to generate static electricity during falling to agglomerate, the powder enters the arch breaking box 411 from the feeding device to break the arch, is separated by the material separating plate 412, is removed from agglomeration by the arch breaking cone 413, uniformly drops along the gap of the arch breaking cone 413, enters the screening box 411, is screened by the screen 412 for the second stage, and enters the subsequent material receiving device.
The function of the arch breaking box 421 is to temporarily store the material in addition to removing the lumps, because if the amount of the material falling into the screen box 411 is too large, the material will be deposited on the surface of the screen 412, making the screening difficult.
Preferably, the screen is a stainless steel grid structure, the mesh size of the screen is 10 meshes, the difference of the average particle size of the octogen powder is large and is different from 20um to 300um, the size of the screen is 10 meshes, the diameter of the screen wire is 0.205mm, and the screen is a square screen hole.
In order to avoid dust raising, a first flange is arranged at the position of the arch breaking box 411 corresponding to the discharge hole 41b, a second flange is arranged at the position of the sieve material box 421 corresponding to the sieve material outlet 42b, and special cloth bags are sleeved between the lower end of the arch breaking box 411 and the upper end of the sieve material box 421 and between the sieve material box 421 and the material receiving device in the sieving process.
Energetic materials are easy to generate static electricity by mutual friction and collision in the sieving process, and spark discharge can occur when a large amount of static electricity reaches a certain degree, and if the spark discharge exceeds the minimum ignition energy, combustion or explosion accidents can be caused. Since electrostatic accumulation is a potential hazard in the sieving process of energetic materials, the electrostatic accumulation is required to be discharged as much as possible, so that the production safety is improved. In this embodiment, static electricity is removed in two ways, a dielectric coating is applied and reliable grounding is achieved.
The walls of the arch breaking mechanism 41 and the sieving mechanism 42 which are in contact with the energetic material are coated with a composite dielectric coating, preferably R-106 in the embodiment#A gunning professor team of northwest university of industry, performs thousands of times of tests of applying HMX powder and different coating materials on the chute by using more than one composite coating formula, tests the electrostatic voltage value and the electricity dissipation rate, and screens out R-106#The composite formula has small static electricity generated by the friction between the composite coating and HMX powder, and can effectively discharge the static electricity carried by the powder, and the static electricity eliminating rate of the composite coating reaches 93 percent and is far lower than that of the static electricityThe spark sensitivity value meets the safe use standard of HMX.
In addition, the arch breaking box 411, the screening box 421 and the screen 422 are grounded through metal structures, in this embodiment, a copper strip is used as a grounding material, in order to ensure reliable grounding, a two-point grounding method is adopted, two bolts are welded on the arch breaking box 411, and the copper strip leads out static electricity generated by the arch breaking box 411 through a wiring terminal; in the screening box 421, the screen 422 is most contacted and rubbed with the powder, so that the screening box 421 is grounded by the two-point grounding method, and the screen 422 is grounded, specifically, as shown in fig. 4, the stainless steel screen 422 is directly contacted with the copper strip 51 with good conductivity, the upper part and the lower part of the stainless steel screen 422 are respectively provided with the rubber plates 52 for sealing, the screen 422, the copper strip 51 and the rubber plates 53 are pressed on the flange edge of the screening box 421 by the bolts 53, so that most of static electricity can be led out through the copper strip 51, and part of static electricity is led out through the grounding wire of the screening box 421.
In traditional screening machinery, the spring of selecting more is as damping element, and the spring has as damping element advantage that intensity is high, and the shock attenuation is effectual, and is better to the improvement effect of the dynamic behavior of system. Rubber or nylon is also selected as the damping element. Considering that the energetic material powder may splash to the spring, there is the potential safety hazard in the spring compression produces the impact to the material powder that splashes on the spring, and the use of rubber and nylon component can be at the junction stockpile, leads to the washing difficulty, so this paper selects the flat belt as damping element, and intensity is high, does not stockpile, washs conveniently, and is specific, the case 411 of breaking the arch and sieve feed box 421 are hung the installation by two flat belts, and two dowel bars 31 average level sets up.
The comprehensive design of this embodiment through above-mentioned structure, security and reliability when effectively having increased energetic material screening have filled the blank that lacks energetic material screening plant among the prior art at present.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A sieving device for energetic materials is characterized by comprising a bracket, a vibration source, a force transmission rod component and a sieving main machine,
the screening host is arranged in the explosion-proof area and used for screening the energetic materials;
the bracket and the vibration source are arranged in a non-explosion-proof area, and the vibration source is arranged on the bracket;
the dowel bar assembly is connected with the vibration source and the screening main machine and is used for transmitting the vibration force of the vibration source to the screening main machine;
wherein the explosion-proof area and the non-explosion-proof area are separated by a partition plate or a wall body.
2. The energetic material sieving device according to claim 1, wherein the sieving host comprises an arch breaking mechanism and a sieving mechanism, the arch breaking mechanism is mounted above the sieving mechanism, the vibration source comprises two vibration exciting mechanisms, the two vibration exciting mechanisms are mounted on the support, the dowel bar assembly comprises two dowel bars, one end of each of the two dowel bars is connected with the two vibration exciting mechanisms respectively, and the other end of each of the two dowel bars is connected with the arch breaking mechanism and the sieving mechanism respectively.
3. The energetic material screening device of claim 2, wherein each excitation mechanism comprises a mounting plate and two excitation sources, the two excitation sources are symmetrically mounted on two sides of the mounting plate respectively, and the mounting plate is connected with the corresponding dowel bar.
4. The energetic material screening device of claim 3, wherein the excitation source is an eccentric motor.
5. The energetic material sieving device according to claim 2, wherein the arch breaking mechanism comprises an arch breaking box, two distributing plates and a plurality of arch breaking cones, a feeding hole is formed in the upper end of the arch breaking box, a discharging hole is formed in the lower end of the arch breaking box, the distributing plates are obliquely arranged in the middle of the arch breaking box and are close to the feeding hole, the number of the distributing plates is two, and the upper ends of the two distributing plates are close to each other and the lower ends of the two distributing plates are far away from each other; the arch breaking cones are arranged in parallel at the positions, close to the discharge hole, of the arch breaking boxes to form a wavy shape, the middle parts of the arch breaking cones protrude upwards to form wave crests, wave troughs are formed between every two adjacent arch breaking cones, gaps for the energetic materials to penetrate through are reserved between every two adjacent arch breaking cones, and the outer sides of the arch breaking boxes are fixedly connected with the corresponding force transmission rods;
the mechanism of sieving is formed with the sieve import including sieve workbin and screen cloth, the upper end of sieve workbin, and the lower extreme forms the export of sieve material, screen cloth horizontal installation in sieve workbin inside, the outside of sieve workbin with correspond dowel steel fixed connection.
6. The energetic material screening device of claim 5, wherein the screen is a stainless steel mesh structure, and the screen has a mesh size of 10 meshes.
7. The energetic material screening device according to claim 5, wherein a first flange is mounted at a position of the arch breaking box corresponding to the discharge port; the sieve workbin corresponds the position of sieve material export installs the second flange, just the cloth bag pipe is installed to the lower extreme of sieve workbin.
8. The energetic material screening device of claim 5, wherein the arch breaking mechanism and the wall of the screening mechanism that contacts the energetic material are coated with a composite dielectric coating.
9. The energetic material screening device of claim 5, wherein the arch breaking tank, the screen box and the screen mesh are all grounded through a metal structure.
10. The energetic material screening device of claim 5, wherein the arch breaking box and the material screening box are both hung and installed by two flat belts, and two dowel bars are both horizontally arranged.
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| CN201669207U (en) * | 2010-03-08 | 2010-12-15 | 吴伟 | Safety gunpowder screening machine |
| CN201670807U (en) * | 2010-03-08 | 2010-12-15 | 吴伟 | Safe gun powder stirring machine |
| CN201669076U (en) * | 2010-04-23 | 2010-12-15 | 吴伟 | Powder material screening and mixing unit |
| CN203470313U (en) * | 2013-07-29 | 2014-03-12 | 泰安岳首筑路机械有限公司 | Batch hopper arch breaking device of asphalt mixing plant |
| CN204124606U (en) * | 2014-07-22 | 2015-01-28 | 江苏海恒建材机械有限公司 | With the hopper of mechanical type Arch-Breaking Device |
| CN109331917A (en) * | 2018-11-15 | 2019-02-15 | 江苏纽克光谱科技有限公司 | Industrial salt broken arch screening plant |
| CN111361871A (en) * | 2020-04-23 | 2020-07-03 | 中国天辰工程有限公司 | Arch breaking device for material bin |
| CN212702900U (en) * | 2020-05-20 | 2021-03-16 | 天津鼎鑫防火材料科技有限公司 | Raw materials sieving mechanism is used in adhesive production |
| CN212120817U (en) * | 2020-11-06 | 2020-12-11 | 新乡市东振机械制造有限公司 | Explosion-proof scraper screening machine |
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Application publication date: 20210831 |