CN111458575B - Automatic detection device for spiral conveying saturated electrostatic charge quantity of energetic material - Google Patents
Automatic detection device for spiral conveying saturated electrostatic charge quantity of energetic material Download PDFInfo
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- CN111458575B CN111458575B CN202010302712.4A CN202010302712A CN111458575B CN 111458575 B CN111458575 B CN 111458575B CN 202010302712 A CN202010302712 A CN 202010302712A CN 111458575 B CN111458575 B CN 111458575B
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- spiral
- hopper
- electrostatic charge
- charge amount
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/24—Arrangements for measuring quantities of charge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/34—Emptying devices
- B65G65/40—Devices for emptying otherwise than from the top
- B65G65/46—Devices for emptying otherwise than from the top using screw conveyors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
- G01G13/02—Means for automatically loading weigh pans or other receptacles, e.g. disposable containers, under control of the weighing mechanism
- G01G13/022—Material feeding devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/60—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrostatic variables, e.g. electrographic flaw testing
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- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The invention discloses an automatic detection device for saturated electrostatic charge amount of energetic material in spiral conveying, which comprises a movable box body, a spiral conveyor, a hopper, a spiral mounting frame, an explosion-proof electronic scale, a vertical lifting mechanism, a horizontal moving mechanism and an electrostatic charge amount testing component, wherein the spiral mounting frame is arranged in the movable box body, the spiral conveyor is arranged on the spiral mounting frame, a feed inlet is formed in one side of the spiral conveyor, a discharge outlet is formed in the other side of the spiral conveyor, the hopper is positioned right below the discharge outlet, the hopper is arranged above the explosion-proof electronic scale, the hopper is connected with the vertical lifting mechanism, the vertical lifting mechanism is connected with the horizontal moving mechanism, and the hopper is electrically connected with the electrostatic charge amount testing component; the invention designs a device capable of circularly and spirally conveying energetic materials, so that the materials can be automatically and repeatedly conveyed by a screw to achieve the purpose of measuring the saturated electrostatic charge quantity of the materials, the measurement is realized by adopting an automatic remote control means, the safety is high, and the real-time monitoring of the electrostatic charge quantity can be realized.
Description
Technical Field
The invention relates to the technical field of spiral conveying of energetic materials, in particular to an automatic detection device for the quantity of saturated electrostatic charges in spiral conveying of energetic materials.
Background
The energetic material contains explosive groups or oxidant and combustible substances and can independently carry out rapid chemical reactionThe compound or the mixture which outputs energy has the bulk resistivity of 10 generally because most energetic materials are high-insulating substances12～1016Omega · m, static electricity is easily generated and accumulated when the medicine particles and equipment or medicine particles are mutually rubbed and collided in the processes of production, storage, transportation, use and the like, and energetic materials are easily ignited when electrostatic discharge occurs, so that the danger is extremely high. Statistically, about 10% -20% of the accidents of accidental explosion of energetic materials are caused by electrostatic discharge. The spiral conveying is a common conveying mode in the production and transportation of the energetic materials, and static electricity is very easily generated in the process, so that the research on the static electricity charging rule in the spiral conveying process of the energetic materials is extremely important for preventing static disasters. Screw conveying is a conveying mode which utilizes a motor to drive a screw to rotate and push materials to achieve conveying purposes, and the conveying mode is applied to energetic materials in a production process generally. However, in the conveying process, because friction, collision, extrusion and the like exist between the materials and the screw, the materials can generate static electricity, and once the static electricity discharge occurs, the energetic materials are combusted and exploded, so that serious accident results can be caused. Therefore, the method measures the quantity of the electrostatic charge in the process, grasps the electrostatic electrification rule of the material, further takes corresponding control measures, and has important significance for the safe production of the energetic material. At present, the measurement of the electrostatic charge amount in the spiral conveying process of the energetic material mainly adopts a discontinuous material taking mode, and a Faraday cylinder method is utilized for testing, and the testing method has the following defects:
1. manual material taking on a production line is needed, so that the safety risk of personnel is high;
2. the saturated electrostatic charge quantity of the energetic material cannot be accurately measured under the influence of the material taking position of a production line and manual intervention;
3. the measured mass of the material cannot be weighed in real time.
Based on the above, the invention provides an automatic detection device for saturated electrostatic charge quantity conveyed by an energetic material screw, so as to solve the above mentioned problems.
Disclosure of Invention
The invention aims to provide an automatic detection device for saturated electrostatic charge quantity conveyed by an energetic material screw, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an automatic detection device for saturated electrostatic charge quantity of energetic materials in spiral conveying comprises a movable box body, a spiral conveyor, a hopper, a spiral mounting rack, an explosion-proof electronic scale, a vertical lifting mechanism, a horizontal moving mechanism and an electrostatic charge quantity testing component, wherein the electrostatic charge quantity testing component is mounted on the hopper, the spiral mounting rack is mounted in the movable box body, the spiral conveyor is mounted on the spiral mounting rack, a feed inlet is formed in one side of the spiral conveyor, a discharge outlet is formed in the other side of the spiral conveyor, the hopper is located right below the discharge outlet and is arranged above the explosion-proof electronic scale, the explosion-proof electronic scale is in contact with the inner bottom wall of the movable box body, the hopper is connected with the vertical lifting mechanism, the vertical lifting mechanism drives the hopper to move up and down, the vertical lifting mechanism is connected with the horizontal moving mechanism, the horizontal moving mechanism drives the vertical lifting mechanism to move horizontally, the hopper is electrically connected with the electrostatic charge quantity testing assembly.
Preferably, the hopper includes inner tube and urceolus, it has insulating shrouding to fill between inner tube and the urceolus, automatic valve plate is installed to the hopper bottom, the hopper bottom is equipped with the disk seat, the disk seat makes automatic valve plate closed tight.
Preferably, the automatic valve plate comprises an insulation valve plate and a rubber valve plate.
Preferably, the insulating closing plate is made of polytetrafluoroethylene materials.
Preferably, the inner cylinder and the outer cylinder are both made of stainless steel materials.
Preferably, the screw shaft of the screw conveyor is a right-handed blade, the nominal diameter of the screw is 120mm, and the total length is about 1.2 m.
Preferably, universal wheels are installed at the bottom of the movable box body.
Preferably, the electrostatic charge amount testing component adopts an induction micro-current integration method for measurement.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention designs a device capable of circularly and spirally conveying energetic materials, so that the materials can automatically and repeatedly pass through spiral conveying to achieve the purpose of measuring the saturated electrostatic charge quantity of the materials.
2. The invention realizes measurement by adopting an automatic remote control means, realizes man-machine isolation, solves the problem of personnel safety, integrates the static detection device and the conveying device, realizes real-time monitoring of the quantity of static charge, and can measure the mass of materials in real time through the explosion-proof electronic scale.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the hopper structure of the present invention;
FIG. 3 is a schematic diagram of the measurement of electrostatic charge amount by the inductive micro-current integration method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution of an automatic detection device for spiral conveying saturated electrostatic charge amount of energetic material: comprises a movable box body 1, a spiral conveyer 2, a hopper 3, a spiral mounting rack 4, an explosion-proof electronic scale 5, a vertical lifting mechanism 7, a horizontal moving mechanism 6 and an electrostatic charge quantity testing component arranged on the hopper 3, wherein the material of the shell of the device is 304 stainless steel, the spiral mounting rack 4 is arranged in the movable box body 1, the spiral conveyer 2 is arranged on the spiral mounting rack 4, one side of the spiral conveyer 2 is provided with a feeding hole 21, the other side of the spiral conveyer 2 is provided with a discharging hole 22, the hopper 3 is positioned under the discharging hole 22, the hopper 3 is arranged above the explosion-proof electronic scale 5, the explosion-proof electronic scale 5 is contacted with the inner bottom wall of the movable box body 1, the hopper 3 is connected with the vertical lifting mechanism 7, the vertical lifting mechanism 7 drives the hopper 3 to move up and down, the vertical lifting mechanism 7 is connected with the horizontal moving mechanism 6, the horizontal moving mechanism 6 drives the vertical lifting mechanism 7 to move horizontally, the vertical lifting mechanism 7 and the horizontal moving mechanism 6 are controlled by a servo motor, can drive the hopper 3 to freely move up and down, left and right, and the hopper 3 is electrically connected with the electrostatic charge quantity testing component.
Wherein, hopper 3 includes inner tube 33 and urceolus 32, it has insulating shrouding 31 to fill between inner tube 33 and the urceolus 32, and automatic valve plate 34 is installed to 3 bottoms of hopper, and 3 bottoms of hopper are equipped with disk seat 35, and disk seat 35 makes automatic valve plate 34 closed tight, prevents to remove the in-process material leakage at hopper 3, and automatic valve plate 34 includes insulating valve plate 342 and rubber valve plate 342, and insulating shrouding 31 is the polytetrafluoroethylene material, and inner tube 33 and urceolus 32 all adopt 304 stainless steel materials to make.
Wherein the spiral shaft of the spiral conveyor 2 is a right-handed blade, the nominal diameter of the spiral is 120mm, and the total length is about 1.2 m; universal wheels are arranged at the bottom of the movable box body 1; the electrostatic charge quantity testing assembly adopts an induction micro-current integration method for measurement.
The specific working principle is as follows:
a proper amount of materials are placed in a feeding hole 21 before a test is started, a spiral blade drives the materials to be conveyed forwards after a spiral conveyor 2 is started, the materials slide into a hopper 3 from an opening at the tail end after a certain conveying distance, at the moment, an electric charge quantity testing system records the quantity of electrostatic charges generated in the conveying process of the materials in real time, after the measurement is finished, the hopper descends to an explosion-proof electronic scale 5, the total mass of the conveyed materials is weighed and recorded, after the test is finished, the hopper runs to be right above a feeding hole through a vertical lifting mechanism 7 and a horizontal moving mechanism 6, at the moment, an automatic valve plate 34 at the bottom of the hopper 3 is opened to release the materials to the feeding hole 21, and a test period is finished.
The principle of measuring the electrostatic charge amount by an induction micro-current integration method is shown in fig. 3, wherein a micro-current sensor 8 with lower input impedance is used for measuring the micro current induced by the outer wall of the charging barrel, and a protective resistor 9 can limit the grounding resistance of the charging barrel to 1k omega when the micro-current sensor 8 breaks down, so that the charging barrel is ensured not to generate electrostatic spark discharge.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The utility model provides an energetic material auger delivery saturation electrostatic charge amount automatic checkout device which characterized in that: comprises a movable box body (1), a spiral conveyor (2), a hopper (3), a spiral mounting rack (4), an explosion-proof electronic scale (5), a vertical lifting mechanism (7), a horizontal moving mechanism (6) and an electrostatic charge amount testing component arranged on the hopper (3), wherein the spiral mounting rack (4) is arranged in the movable box body (1), the spiral conveyor (2) is arranged on the spiral mounting rack (4), a feeding hole (21) is formed in one side of the spiral conveyor (2), a discharging hole (22) is formed in the other side of the spiral conveyor (2), the hopper (3) is positioned under the discharging hole (22), the hopper (3) is arranged above the explosion-proof electronic scale (5), the explosion-proof electronic scale (5) is in contact with the inner bottom wall of the movable box body (1), and the hopper (3) is connected with the vertical lifting mechanism (7), the vertical lifting mechanism (7) drives the hopper (3) to move up and down, the vertical lifting mechanism (7) is connected with the horizontal moving mechanism (6), the horizontal moving mechanism (6) drives the vertical lifting mechanism (7) to move horizontally, and the hopper (3) is electrically connected with the electrostatic charge quantity testing assembly.
2. The device of claim 1, wherein the device comprises: hopper (3) include inner tube (33) and urceolus (32), it has insulating shrouding (31) to fill between inner tube (33) and urceolus (32), automatic valve plate (34) are installed to hopper (3) bottom, hopper (3) bottom is equipped with disk seat (35), disk seat (35) make automatic valve plate (34) closed tight.
3. The device for automatically detecting the saturated electrostatic charge amount conveyed by the spiral of the energetic material as claimed in claim 2, wherein: the automatic valve plate (34) comprises an insulating valve plate (341) and a rubber valve plate (342).
4. The device for automatically detecting the saturated electrostatic charge amount conveyed by the spiral of the energetic material as claimed in claim 2, wherein: the insulating sealing plate (31) is made of polytetrafluoroethylene materials.
5. The device for automatically detecting the saturated electrostatic charge amount conveyed by the spiral of the energetic material as claimed in claim 2, wherein: the inner cylinder (33) and the outer cylinder (32) are both made of 304 stainless steel materials.
6. The device for automatically detecting the saturated electrostatic charge amount conveyed by the spiral of the energetic material as claimed in claim 1, wherein: the spiral shaft of the spiral conveyor (2) is a right-handed blade, the nominal diameter of the spiral is 120mm, and the total length is about 1.2 m.
7. The device for automatically detecting the saturated electrostatic charge amount conveyed by the spiral of the energetic material as claimed in claim 1, wherein: the bottom of the movable box body (1) is provided with universal wheels.
8. The device for automatically detecting the saturated electrostatic charge amount conveyed by the spiral of the energetic material as claimed in claim 1, wherein: the electrostatic charge quantity testing assembly adopts an induction micro-current integration method to measure.
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| CN202010302712.4A CN111458575B (en) | 2020-04-17 | 2020-04-17 | Automatic detection device for spiral conveying saturated electrostatic charge quantity of energetic material |
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| CN202010302712.4A CN111458575B (en) | 2020-04-17 | 2020-04-17 | Automatic detection device for spiral conveying saturated electrostatic charge quantity of energetic material |
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| CN111458575B true CN111458575B (en) | 2022-05-27 |
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