CN106805275B - Dust separating device of straw bulking machine - Google Patents
Dust separating device of straw bulking machine Download PDFInfo
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- CN106805275B CN106805275B CN201710019104.0A CN201710019104A CN106805275B CN 106805275 B CN106805275 B CN 106805275B CN 201710019104 A CN201710019104 A CN 201710019104A CN 106805275 B CN106805275 B CN 106805275B
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23N—MACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLES OR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS
- A23N17/00—Apparatus specially adapted for preparing animal feeding-stuffs
- A23N17/005—Apparatus specially adapted for preparing animal feeding-stuffs for shaping by moulding, extrusion, pressing, e.g. pellet-mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
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- Chemical Kinetics & Catalysis (AREA)
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
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Abstract
The utility model provides a straw bulking machine separation dust device, includes the sealed cowling, sets up the vortex fan and the main duct of setting at the opposite side in sealed cowling one side, and the input of vortex fan is equipped with the driving machine, and its technical essential is: a filter screen is arranged between the main guide pipe and the sealing cover, filter cloth is arranged at the tail end of the main guide pipe, an auxiliary guide pipe is arranged on the main guide pipe, a pressure relief assembly is arranged in the auxiliary guide pipe, and exhaust ports at the tail ends of the main guide pipe and the dust auxiliary guide pipe are communicated with a filtrate container; the pressure relief assembly comprises an overflow valve, a pressure relay and a pressure sensor; a driving circuit used for controlling the output power of the motor is arranged on the driver, and a negative feedback loop is established between the pressure relief assembly and the driving circuit. The problems that a large amount of dust is generated in the working process of the straw bulking machine and the working environment is polluted are fundamentally solved, and the straw bulking machine has the advantages that a feeding port is sealed, the dust is quickly separated, the pressure of a filtering device is stable, the broken property of the straw is not influenced, key elements are easy to replace, and the like.
Description
Technical Field
The invention relates to the field of straw puffing equipment, in particular to a dust separating device of a straw puffing machine, which is mainly suitable for collecting and treating dust at a feed inlet of the puffing machine.
Background
At present, dust generated in the using process of the straw bulking machine is not treated and is directly diffused into the atmosphere, so that the working environment is seriously influenced. During the use process of the straw bulking machine, a lot of dust can be generated due to high-speed rotation, high temperature and high pressure, impurities in the raw materials and the like. A feeding port of a traditional straw bulking machine is in a semi-open state, a large amount of dust is generated in the process of entering straws and is directly diffused in the air, and the indoor environment is seriously influenced.
The utility model discloses a current bulking machine separation dust device, like the utility model patent of the grant publication number CN201821880U disclose "a novel bulking feed arrangement", comprises barrel, lower hopper and the feed inlet that is located the barrel top, is equipped with rocking arm and commentaries on classics board in the barrel, and the barrel is connected with a cyclone collector through the connecting pipe. The cyclone collector comprises an upper shell and a lower shell which are connected up and down, an air outlet is arranged above the upper shell, an inlet is arranged on one side of the upper shell, and the inlet is connected with a connecting pipe of the connecting cylinder. The lower shell of the cyclone collector is in a cone shape with a wide upper end and a narrow lower end. Although this technical scheme can collect outer steam and the dust of leaking in the barrel to with steam and dust separation recovery, solve outer advantage such as hourglass and wasting of resources problem. However, it still has the following drawbacks: the mode of firstly diffusing and then collecting is adopted for treating the inlet of the bulking machine, and the collection degree cannot be ensured. If the pipeline is blocked, dust can flow backwards, and damage is caused to equipment.
Disclosure of Invention
The invention aims to provide a dust separating device of a straw bulking machine, which fundamentally solves the problems of a large amount of dust generated in the working process of the straw bulking machine and pollution to the working environment and has the advantages of sealed feeding port, quick dust separation, stable pressure of a filtering device, no influence on the broken property of straws, easy replacement of key elements and the like.
In order to realize the purpose, the invention provides the following technical scheme: this straw bulking machine separation dust device includes the sealed cowling, sets up the vortex fan and set up the main duct at the opposite side in sealed cowling one side, and the input of vortex fan is equipped with the driving machine, and its technical essential is: a filter screen is arranged between the main guide pipe and the sealing cover, filter cloth is arranged at the tail end of the main guide pipe, an auxiliary guide pipe is arranged on the main guide pipe, a pressure relief assembly is arranged in the auxiliary guide pipe, and exhaust ports at the tail ends of the main guide pipe and the dust auxiliary guide pipe are communicated with a filtrate container; the pressure relief assembly comprises an overflow valve, a pressure relay and a pressure sensor; a driving circuit used for controlling the output power of the motor is arranged on the driver, and a negative feedback loop is established between the pressure relief assembly and the driving circuit;
a pressure sensor at the end of the pressure relief assembly monitors the air pressure in the main pipe in real time, the air pressure is used as a signal source for controlling the output power of the driving circuit, and when the air pressure rises, the output power of the driving machine is reduced; when the air pressure is standard atmospheric pressure, the driver outputs rated power;
the overflow valve can control the opening of the exhaust port of the auxiliary conduit, when the air pressure is a standard atmospheric pressure, the overflow valve is in a completely closed state, when the pressure in the main conduit is gradually increased, the overflow valve is gradually opened to unload, and the gas is discharged through the auxiliary conduit, so that the pressure in the main conduit is kept at the standard atmospheric pressure;
and when the overflow valve is in a fully opened state, if the air pressure in the main pipe is still higher than a standard atmospheric pressure, the rotating speed of the driving machine is reduced through the driving machine driving circuit, and the pressure in the main pipe is reduced.
The invention has the beneficial effects that: can separate the dust treatment to the bulking machine, the pan feeding mouth is sealed, prevents that the dust from spilling over. The straw and the dust can be quickly and effectively separated, and meanwhile, the dust can enter the collecting device as far as possible. Compared with dust removal by water mist, the dust separation by adopting the vortex can keep the straws in a better state and is more beneficial to nutrient absorption. The collecting device is a detachable device arranged outside the shell, and can clean dust and replace filter cloth regularly. By arranging the auxiliary conduit with the negative feedback function, the pipeline blockage and dust blockage can be effectively avoided, and the dust flows back to the feeding port. The gas is discharged into the atmosphere through the filtrate, and the dust content in the gas discharged into the air after twice filtration is greatly reduced, so that the dust suppression effect is achieved, and the working environment is optimized.
Drawings
FIG. 1 is a schematic isometric side view of a machining center according to the present invention;
FIG. 2 is a front view of the machining center of the present invention;
FIG. 3 shows a machining center according to the present invention schematic view of the puffing device
Figure 4 is a bulking assembly of the present invention schematic isometric side view structure of (a);
FIG. 5 is a schematic view of a pressure relief assembly according to the present invention;
FIG. 6 is a schematic representation of the operation of the pressure relief assembly of the present invention;
FIG. 7 is a flow chart of a self-learning control method of the present invention;
FIG. 8 is a block diagram of the self-learning control method of the present invention.
Description of reference numerals:
in fig. 1: 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 discharging ports;
in fig. 2: an outlet of the chopping device 11, a conveying roller 12, a baffle 13, a base of a driving machine 14, a driving machine 15, a base of a driving machine 16, a bracket 17, a transmission chain 18, a charging barrel 19, a hopper 20, a feeding channel assembly outlet 21 and a feeding bracket 22;
in fig. 3: 23 anti-blocking device, 24 support base, 25 screw, 26 expansion head discharge port, 27 expansion head, 28 expansion cavity, 29 expansion screw and 30 expansion cavity inlet;
in fig. 4: 4, an anti-blocking device, 15 drivers, 18 transmission chains, 20 hoppers, 25 screws, 26 puffing head discharge ports, 28 puffing cavities, 29 puffing screws and 31 adjusting devices;
in fig. 5: 32 driving machines, 33 vortex fans, 34 sealing covers, 35 filter screens, 36 main guide pipes, 37 auxiliary guide pipes, 38 pressure relief assemblies, 39 filter cloth, 40 main guide pipe exhaust ports, 41 filtrate containers and 42 auxiliary guide pipe exhaust ports.
Detailed Description
The present invention will be described in detail with reference to FIG. 1~8 by way of specific embodiments. This straw bulking machine separation dust device includes sealed cowling 34, sets up the vortex fan 33 and the main duct 36 of setting at the opposite side in sealed cowling one side, and the vortex air outlet is relative with the air intake position of main duct, and the input of vortex fan is equipped with driving machine 32. The sealing cover is arranged at a straw feeding port of the bulking machine (not shown in the figure) and is used for sealing treatment, so that dust diffusion can be effectively prevented. A filter screen 35 is arranged between the main duct and the sealing cover, a filter cloth 39 is arranged at the tail end of the main duct, an auxiliary duct 37 is arranged on the main duct, a pressure relief assembly 38 is arranged in the auxiliary duct, and a main duct exhaust port 40 and an auxiliary duct exhaust port 42 are communicated into a filtrate container 41. The pressure relief assembly comprises an overflow valve, a pressure relay and a pressure sensor.
The straw sections after preorder treatment (mainly referred to as a chopping and pressing process in the present place) are put into the sealing cover from the upper opening of the sealing cover, the sealing cover integrally adopts a funnel-shaped structure with a large top and a small bottom, and the straw is in a loose porous structure and has small relative density, so that certain difficulty exists when the sealing cover enters the auger feeding mechanism of the bulking machine. However, if the scheme is adopted, the sealing cover has to be made very long, which is not beneficial to the preparation of the whole machine. Compaction equipment may also be added, but at significant manufacturing and maintenance costs. After the funnel structure is adopted, the inclined plane part of the funnel structure can form downward sliding force, bottom materials are pressed downwards by means of dead weight, and the vertical side face of the funnel structure can increase the compaction effect. On one hand, the length of the sealing cover can be shortened, and on the other hand, a compaction mechanism can be omitted, so that the overall structure is simplified, and the operation cost is reduced.
The vortex fan produces the cyclone under the drive of driving source, because dust monomer weight is light, consequently changes the effect at the vortex and follows the vortex motion to make tiny dust peel off from the great straw section surface of volume weight, the vortex then can guarantee the direction that the dust flows, avoids the dust to be unordered disturbance state "in the sealed cowling and flies in disorder", but in the direct main duct that gets into of vortex direction footpath. The filter screen has a certain aperture, which can play a role in limiting the particle size of inflow substances and prevent the straw section with larger volume from entering the filter screen to block the pipeline. The straw sections fall into the bulking machine downwards along the sealing cover under the action of self weight, and the next procedure is carried out. After the dust passes through the filter screen, the dust is led to a filtrate container along the main guide pipe, and is firstly absorbed by filter cloth to complete primary filtration; the finer dust particles pass through the filter cloth and are introduced into the filtrate through the exhaust port 40 to be absorbed by the filtrate, thereby completing the secondary filtration. Furthermore, the filter cloth also plays a role in scattering bubbles in the filtrate, and avoids the phenomenon that overlarge bubbles are mixed with dust and introduced into the atmosphere. Finally, the clean gas after the secondary filtration is discharged to the atmosphere.
The filter cloth is a porous structure, dust on the filter cloth is accumulated continuously along with the production, and if the filter cloth is not replaced in time, the exhaust port 40 of the main duct can be blocked at a certain moment. At this time, in order to avoid the blockage of the pipeline system and realize the unloading, the auxiliary conduit 37 is arranged beside the main conduit, and even if the main conduit 36 is blocked, the vortex air flow flows along the auxiliary conduit 37 and finally is introduced into the filtrate through the exhaust port 42.
In one aspect, the secondary duct 37 may take on the exact same configuration as the primary duct. On the other hand, a pressure relief assembly mainly composed of an overflow valve, a pressure relay and a pressure sensor can be arranged in the auxiliary conduit, a driving circuit for controlling the output power of the motor is arranged on the driving machine, and a negative feedback loop is established between the pressure relief assembly and the driving circuit. Specifically, a pressure sensor at the end of the pressure relief assembly monitors the air pressure in the main pipe in real time, the air pressure is used as a signal source for controlling the output power of the driving circuit, when the air pressure rises, the output power of the driving machine is reduced, and the rotating speed is slowed down; when the air pressure is standard atmospheric pressure, the driver outputs rated power. On one hand, the variable power control mode can adopt a plurality of parallel resistors controlled by a relay, and when the air pressure is standard atmospheric pressure, all the parallel resistors are connected. On the other hand, an adjustable resistor formed by a sliding switch can be adopted, and when the air pressure is standard atmospheric pressure, the adjustable resistor is connected into the circuit with the minimum resistance value.
Meanwhile, the end of the secondary conduit is provided with an overflow valve capable of controlling the opening size of the exhaust port, when the air pressure is a standard atmospheric pressure, the overflow valve is in a completely closed state, when the pressure in the main conduit is gradually increased, the overflow valve is gradually opened for unloading, and the gas is discharged through the secondary conduit to ensure that the standard atmospheric pressure is maintained in the main conduit, and when the overflow valve is in a completely opened state, the air pressure in the main conduit is still higher than the standard atmospheric pressure (for achieving the purpose, the inner diameter of the secondary conduit is set smaller than the inner diameter of the main conduit, so that the air pressure when the secondary conduit is completely adopted under the condition that the output air volume of the vortex fan is the same is higher than the air pressure when the main conduit is completely adopted), and at the moment, the rotating speed of the driving machine is controlled to reduce the pressure of the main conduit.
In addition, because the filter cloth blockage is a gradual change process and is difficult to observe from the outside, a rotating speed sensor is arranged on the driving machine, and the using state of the filter cloth can be directly monitored. By prior experimentation, for example:
1) Completely closing an air outlet at the tail end of the main duct, and when an air outlet of the auxiliary duct is completely opened, setting the driving machine to be the minimum rotating speed r1, wherein the blockage degree of the corresponding main duct is 0.5a +0.5b, a =1, b =1, namely completely blocking;
2) Completely closing an air outlet at the tail end of the main duct, and setting the driving machine to be a rated rotating speed r2 when an air outlet of the auxiliary duct is completely opened, wherein the corresponding blockage degree of the main duct is 0.5a +0.5b, a =0 and b =1, namely partial blockage is realized, and only the rotating speed of the engine is left to be regulated and controlled;
3) Completely closing an air outlet at the tail end of the main duct, and setting the driving machine to be a rated rotating speed r2 when an air outlet of the auxiliary duct is completely closed, wherein the blockage degree of the corresponding main duct is 0.5a +0.5b, a =0 and b =0, namely the blockage degree is 0;
a =1 when the rotation speed is the minimum rotation speed r1, and a =0 when the rotation speed is the rated rotation speed r 2;
b =1 when the secondary pipe tip relief valve is fully open, and b =0 when the relief valve is fully closed. (or set to 0.3a +0.7b, the weight occupied by the rotating speed of the motor and the opening degree of the overflow valve can be adjusted according to the requirement.)
When the blocking degree reaches more than 50b%, an alarm signal is sent to prompt the replacement of the filter cloth, a controllable valve is arranged at the joint of the auxiliary conduit and the main conduit for ensuring that the production is not affected when the filter cloth is replaced, and when the filter cloth needs to be replaced, the valve is closed, so that the air only flows to the branch conduit. The filter cloth adopts the plug-in card formula, changes convenient and fast.
The dust separating device is mainly used for the preorder processing process of a straw puffing center, and the straw puffing feed processing center comprises a feeding assembly, a puffing assembly and a discharging assembly. Wherein, the pan feeding subassembly is including the first hand hay cutter pressure equipment of being equipped with feed inlet 1 and putting 2, set up at the feedstock channel subassembly 4 of hand hay cutter pressure equipment export 11, set up watering device 3 in the feedstock channel subassembly, set up the secondary hand hay cutter pressure equipment 5 at feedstock channel subassembly export 21. The feed channel assembly 4 is a conveying roller with a baffle plate and an upward inclined feed end to discharge end, and the conveying roller is fixed on a horizontal plane through a feed support 22.
The puffing assembly comprises a hopper 20 arranged at the outlet of the feeding channel assembly, an anti-blocking device 23 arranged in the hopper, and a puffing device 6 arranged at the outlet of the bottom of the hopper, wherein the puffing device 6 is limited on a support 17 by being fixed on a bottom supporting seat 24 of a puffing shell, the support 17 is installed on a base 16, and the base 16 is fixed on the horizontal plane. The anti-blocking device 23 comprises a material stirring shaft (not marked in the figure) horizontally arranged in the hopper and a material stirring blade limited on the material stirring shaft, wherein the input end of the material stirring shaft (not marked in the figure) is connected to the driving machine 15.
The popped device is including the expanded casing (not mark in the figure) of symmetry setting tube-shape in the hopper both sides, screw rod 25 of setting in expanded casing, driving machine 15 through drive chain 18 and screw rod 25's input link up, the popped spiral 29 of setting on the screw rod, set up the popped head 27 at popped casing both ends discharge gate respectively, the vertical setting of setting on popped head discharge gate 26 is with feed cylinder 19, the direction of the popped spiral of both sides is opposite, form popped chamber 28 between popped casing and the popped spiral 29, the discharge gate and the popped chamber entry 30 of hopper bottom are linked together, driving machine 15 passes through driving machine base 14 to be fixed on the horizontal plane.
The discharging component comprises a discharging channel component 7 arranged at the discharging end of the charging barrel of the puffing device, a bacterium liquid spraying device 8 arranged on the discharging channel component, and a packing device 9 arranged at the outlet end of the discharging channel component and provided with a discharging port 10, wherein the discharging channel component 7 comprises a conveying roller 12 with a baffle 13.
The method comprises the steps of feeding the whole straw into a primary chopping device through a feeding port 1, chopping and extruding the straw, conveying the straw to a secondary chopping device through a feeding channel assembly, sprinkling water to the straw in the straw conveying process through a sprinkling device on the feeding channel assembly to reduce floating dust, then feeding the straw into a secondary fine chopping device, carrying out secondary chopping on the straw to enable the straw to be more finely crushed, reducing abrasion to a puffing device due to physical properties such as straw hardening and the like, driving a reverse stirring blade through a stirring shaft inside an anti-blocking device to enable the feed to smoothly fall into a bilateral symmetrical puffing cavity, enabling the straw to collide and rub with a puffing screw and a cavity wall in the puffing cavity to generate a large amount of heat, enabling the temperature in the puffing cavity to be rapidly increased (to 170 ℃), enabling the puffed straw to be cured, saccharified and spongy, enabling moisture in the straw to be changed into superheated steam in a short time, forming a high-temperature tempering hydrothermal environment, playing roles in curing, promoting cellulose degradation and the like, enabling the puffed straw to be bundled on a straw barrel along two discharging ports of the puffing device, enabling the straw to be fully filled with a straw fermentation feed packaging medium, and enabling the straw to be added into a straw packaging device, and a straw packaging medium, and a straw packaging device, and a straw micro-fermentation biological feed packaging device, and a straw packaging device.
In addition, in order to shorten the debugging time, prolong the service life and reduce the maintenance cost, the puffing assembly of the straw puffed feed processing center also adopts a self-learning control system, wherein the self-learning control system comprises a processor module, an input module, a monitoring module and a storage module which are connected with the input end of the processor module, an execution module connected with the output end of the processor module and a display module connected with the output end of the processor module.
The processor module can adopt an upper computer and is mainly used for comparing actual parameters with parameters in an operation parameter library, receiving specific control signals and sending execution processing or termination processing commands to the execution module.
The input module mainly refers to keyboard, PDA, or straw bulking machine integrated touch control equipment and other visual hardware, so as to input the parameters to be set.
The monitoring module mainly includes pressure sensor and the temperature sensor of setting in popped intracavity, and pressure sensor mainly used detects the straw material in the auger and poppes the pressure between the inner wall, and temperature sensor mainly used detects the popped temperature in the head that poppes. A plurality of humidity sensors can be arranged on the feeding path (hopper, inner wall of the puffing cavity) to detect the actual moisture content of the materials by a multi-parameter matching method. When the parameters of the straw and the straw bulking machine are changed, the parameters can be automatically adjusted, so that the straw bulking machine can normally operate, and the straw bulking effect is optimal.
The execution module comprises a bulking head heating unit and a driver control unit, the execution module mainly refers to a unit which is actually controlled, and the self-learning and self-feedback of the whole system are mainly represented by the execution module.
The storage module may adopt a storage medium located in the upper computer, such as a hard disk and a memory. The storage module is internally provided with a straw parameter library and an operation parameter library which are mutually associated and matched, the database can adopt SQL, and the compiling of the self-learning program can adopt MATLAB or OCTAVE.
The display module can adopt a liquid crystal display screen or only adopt an indicator lamp to display the screw rotation speed, the power supply voltage and the current, the yield of the straw bulking machine, the temperature of the bulking head, the pressure of the bulking cavity, the humidity of the bulking cavity and the like in real time. And the control data in the operation parameter library and the control data executed for the first time are displayed in a distinguishing way and can be distinguished through colors, for example, the original optimal operation parameter is represented as green, and the optimization parameter executed for the first time and learned for the first time is represented as blue.
The automatic control method of the self-learning control system comprises the following steps:
step 1) establishing a straw parameter library and an operation parameter library which are mutually associated and matched, setting a standard value, wherein the straw parameter library comprises the average water content, the average density and the average length of straws, the operation parameter library comprises the temperature of a puffing cavity, the pressure of a puffing head, the rotating speed of a screw and the yield of the puffed straws, and the standard value comprises the input current of a driver;
step 2) manually detecting straw parameters, comparing the obtained parameters with a standard value, if the straw parameters are positioned in the standard value, executing step 3), and if the straw parameters exceed or are lower than the standard value, executing step 7);
step 3) inquiring a matched value in a straw parameter library, and sending an operation parameter value in an operation parameter library corresponding to the matched value to a processor module; if the query value of the straw parameter base is empty, sending a prompt, continuously querying the straw parameter base after increasing or decreasing 1 to 10 percent on the basis of the value until a similar numerical value is queried, and establishing a new data element; if the query value of the operation parameter base is empty, sending a prompt, increasing or decreasing the query value by 1 to 10 percent on the basis of the value, continuing to query in the operation parameter base until similar numerical information is queried, and establishing a new data element;
step 4) after receiving the operation parameters, the execution module sends control commands to the driver control unit and the expansion head heating unit to control the input current and the screw rotation speed;
step 5), when the temperature of the puffing cavity reaches a numerical value corresponding to the operation parameter, the display module prompts that the preparation is finished;
step 6) feeding straws into a puffing chamber, detecting operation parameters in real time through a monitoring module, wherein certain fluctuation can be generated due to the difference of straw uniformity and the abrasion of the puffing head pressure caused by continuous use of equipment, if the yield of the puffed straws is greater than a basic parameter after 20min from the time point of the basic parameter, the operation parameters are sent to an execution module, and the step 4) is executed, and meanwhile, the changed operation parameters are stored into an operation parameter library; if the yield of the puffed straws is less than the basic parameters, searching the operation parameters corresponding to the highest straw yield corresponding to the current straw parameters in the operation parameter library, sending the operation parameters to an execution module, and executing the step 4); once the measured operation parameter exceeds 20% of the standard value, an alarm is sent out through a display module, and meanwhile, the step 7) is executed;
and 7) when the execution module receives an external control signal or the operation parameter exceeds or is lower than a standard value, the execution module sends a control command to the driving machine and the expansion head heating unit and stops operating.
Claims (1)
1. The utility model provides a straw bulking machine separation dust device, includes sealed cowling (34), sets up vortex fan (33) and main duct (36) of setting at the opposite side in sealed cowling (34) one side, and the input of vortex fan (33) is equipped with driving machine (15), its characterized in that: a filter screen (35) is arranged between the main duct (36) and the sealing cover (34), filter cloth (39) is arranged at the tail end of the main duct (36), an auxiliary duct (37) is arranged on the main duct (36), a pressure relief assembly (38) is arranged in the auxiliary duct (37), and exhaust ports at the tail ends of the main duct (36) and the dust auxiliary duct (37) are communicated into a filtrate container (41); the pressure relief assembly (38) comprises an overflow valve, a pressure relay and a pressure sensor; a driving circuit used for controlling the output power of the motor is arranged on the driver (15), and a negative feedback loop is established between the pressure relief assembly (38) and the driving circuit;
a pressure sensor at the end of the pressure relief assembly (38) monitors the air pressure in the main guide pipe (36) in real time, the air pressure is used as a signal source of the driving circuit for controlling the output power, and when the air pressure rises, the output power of the driving machine (15) is reduced; when the air pressure is standard atmospheric pressure, the driver (15) outputs rated power;
the overflow valve can control the opening of the exhaust port of the auxiliary conduit (37), when the air pressure is a standard atmospheric pressure, the overflow valve is in a completely closed state, when the pressure in the main conduit (36) is gradually increased, the overflow valve is gradually opened for unloading, and the gas is discharged through the auxiliary conduit (37), so that the pressure in the main conduit (36) is kept at the standard atmospheric pressure;
when the overflow valve is in a fully open state, if the air pressure in the main pipe (36) is still higher than a standard atmospheric pressure, the rotating speed of the driving machine (15) is reduced through the driving circuit of the driving machine (15) to reduce the pressure in the main pipe (36);
the sealing cover (34) is integrally of a funnel-shaped structure with a large upper part and a small lower part, and the filter cloth (39) is of a plug-in type.
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| CN201710019104.0A CN106805275B (en) | 2017-01-11 | 2017-01-11 | Dust separating device of straw bulking machine |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB690400A (en) * | 1950-02-10 | 1953-04-22 | Edmond Harvengt | Improvements in the dry dust freeing of coals and similar materials |
| CN204935830U (en) * | 2015-05-19 | 2016-01-06 | 迟延玲 | A kind of gas-explosion-type straw rubbing bulking machine |
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| CA1051866A (en) * | 1976-09-24 | 1979-04-03 | Peter Tymocko | Dust collection system |
| CN101327403A (en) * | 2008-07-27 | 2008-12-24 | 郴州市金贵银业股份有限公司 | Device for purifying and treating tail gas |
| FR2977806A1 (en) * | 2011-07-11 | 2013-01-18 | Renault Sa | Mobile unit for filtering e.g. suspended solid particles in gas from waste pipe of automobile painting installation, has electric fan imposing displacement on gas from inlet towards outlet, and filtering device to filter gas fed via inlet |
| CN204093186U (en) * | 2014-07-08 | 2015-01-14 | 安徽禾泉种业有限公司 | Dust arrester on paddy rice skinning machine |
| CN206481984U (en) * | 2017-01-11 | 2017-09-12 | 辽宁工程技术大学 | Straw bulking machine separates dust device |
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2017
- 2017-01-11 CN CN201710019104.0A patent/CN106805275B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB690400A (en) * | 1950-02-10 | 1953-04-22 | Edmond Harvengt | Improvements in the dry dust freeing of coals and similar materials |
| CN204935830U (en) * | 2015-05-19 | 2016-01-06 | 迟延玲 | A kind of gas-explosion-type straw rubbing bulking machine |
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