Dedusting and undersize material collecting system for straw processing

Abstract

The utility model discloses a dedusting and undersize material collecting system for straw processing, which relates to the field of straw processing, and comprises a dust suction device and a dedusting and collecting device, a first dust suction hood is used for covering the outside of a straw crusher, and is communicated with a dust suction main pipe through a first dust suction branch pipe; the second dust collection cover is used for covering the outside of the straw conveyor and is communicated with the dust collection main pipe through a second dust collection branch pipe, the third dust collection cover is used for covering the outside of the straw screening and impurity removing machine, and the bottom of the third dust collection cover is communicated with the dust collection main pipe through a third dust collection branch pipe; the dust collection device comprises a collection part, an air inducing mechanism and a plurality of plastic dust removers arranged on the upper portion of the collection part. According to the dust removal and undersize material collection system for straw processing, power consumption and cost are reduced, and the problems that dust pollution on a straw processing site is serious, conveying efficiency is low due to the fact that belt conveying is not flexible, the number of moving devices is large, and site arrangement is disordered are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the straw processing field, especially a kind of dust removal and screening under the straw processing of discharging collection system. BACKGROUND

[0002] Dry crop straw produces a large amount of dust in the process of crushing, screening and impurity removal and conveying, and the air dust pollution around the processing equipment is very serious. The main components of dust are fine dry soil and straw powder, and the specific gravity of straw powder is very small, so the dust removal effect of cyclone dust collector is not good. The dust removal equipment used in the prior art is mainly bag dust collector, which has the following shortcomings: the air resistance of bag dust collector is large, and the supporting fan power is large; bag dust collector needs to be matched with air compressor for back-blowing dust cleaning, and the power consumption is also not small; the filter bag of bag dust collector has a certain service life, and it needs to be replaced once a year, which is high in cost. The main component of screening under the straw is straw powder, and the existing technology mainly uses belt conveyor for conveying, which has the problems of dust raising and spilling, poor on-site hygiene and dust pollution; at the same time, due to the large amount of screening under the straw, it is not suitable to use bag dust removal method to collect materials; in addition, the belt conveying is not flexible, and multiple belt conveyors may be needed to be combined, which has the problems of many moving devices, messy on-site arrangement and low conveying efficiency. CONTENT OF THE UTILITY MODEL

[0003] To solve the above technical problems, the utility model provides a kind of dust removal and screening under the straw processing of discharging collection system, reduces power consumption and cost, and solves the problems of serious dust pollution in straw processing site, low conveying efficiency caused by inflexible belt conveying, many moving devices and messy on-site arrangement.

[0004] To achieve the above purpose, the utility model provides the following scheme:

[0005] The utility model provides a kind of straw processing's dust removal and screening discharge collection system, including dust extraction device and dust removal collection device, the dust extraction device includes first dust cover, second dust cover, third dust cover, dust extraction main pipe, first dust extraction branch pipe, second dust extraction branch pipe and third dust extraction branch pipe, the first dust cover is used to cover and be equipped in the outside of straw pulverizer, the first dust cover is connected with the dust extraction main pipe by the first dust extraction branch pipe, the second dust cover is used to cover and be equipped in the outside of straw conveyor, the second dust cover is connected with the dust extraction main pipe by the second dust extraction branch pipe, the third dust cover is used to cover and be equipped in the outside of straw screening and impurity removal machine, the bottom of third dust cover is connected with the dust extraction main pipe by the third dust extraction branch pipe;The dust removal collection device includes collecting component, air induction mechanism and multiple plastic dust collectors arranged on the upper portion of the collecting component, the bottom of each plastic dust collector is connected with the collecting component, the air inlet of each plastic dust collector is connected with the air outlet of the dust extraction main pipe, and the air induction mechanism is used to suction the air containing dust and screening discharge in the dust extraction main pipe to the air inlet of the plastic dust collector.

[0006] Preferably, the plastic dust collector includes a dust collector body, a dust collector air inlet pipe and a dust collector air outlet pipe, the dust collector body is closed at the top and open at the bottom, the dust collector body is arranged on the upper portion of the collecting component, and the bottom of the dust collector body is connected with the collecting component, the dust collector air inlet pipe is arranged on one side of the top of the dust collector body and connected with the dust collector body, the dust collector air outlet pipe penetrates through the top of the dust collector body and extends into the dust collector body, and the height of the bottom end of the dust collector air outlet pipe is lower than the arrangement height of the dust collector air inlet pipe.

[0007] Preferably, the plastic dust collector further includes a filter pipe, the filter pipe is open at the top and closed at the bottom, the top of the filter pipe is connected with the bottom of the dust collector air outlet pipe, and the sidewall of the filter pipe is provided with multiple through holes.

[0008] Preferably, the dust removal collection device further includes a housing, a partition plate and a connecting mechanism, the housing is closed at the top and open at the bottom, the housing is arranged on the top of the collecting component, the housing is provided with the partition plate, the upper portion of the partition plate forms an air outlet chamber, an air inlet chamber is formed between the partition plate and the collecting component, the air inlets of the plastic dust collectors are connected with the air inlet chamber, the connecting mechanism is arranged in the air inlet chamber, the air outlets of the plastic dust collectors are connected with the air outlet chamber through the connecting mechanism, one side of the air inlet chamber is provided with an air inlet main pipe, the air outlet of the dust extraction main pipe is connected with the air inlet main pipe, the other side of the air outlet chamber is provided with an air outlet main pipe, and the air outlet main pipe is connected with the air inlet of the air induction mechanism.

[0009] Preferably, the connecting mechanism comprises a plurality of connecting assemblies, each of the connecting assemblies comprises a fixed pipe and a connecting hose, a plurality of first mounting holes are arranged on the partition plate, the upper end of each of the fixed pipes is arranged on the bottom of the partition plate and corresponds to a position of one of the first mounting holes, the upper end of each of the connecting hoses is connected with the lower end of one of the fixed pipes, and the lower end of each of the connecting hoses is connected with one of the air outlets of the plastic dust collectors.

[0010] Preferably, the air guiding mechanism comprises an air guiding fan, an air guiding inlet pipe and an air guiding outlet pipe, one end of the air guiding inlet pipe is connected with the air outlet main pipe, the other end of the air guiding inlet pipe is connected with the air inlet of the air guiding fan, the air outlet of the air guiding fan is connected with one end of the air guiding outlet pipe, and the other end of the air guiding outlet pipe is used for being connected with a chimney.

[0011] Preferably, the collecting component comprises a support frame, a collecting hopper, a mounting plate and a star-shaped unloader, the support frame is arranged on the lower part of the collecting hopper, the top of the collecting hopper is open, the bottom of the collecting hopper is open, the bottom of the shell is connected with the top of the collecting hopper, the mounting plate covers the opening arranged on the top of the collecting hopper, a plurality of second mounting holes are arranged on the mounting plate, one of the plastic dust collectors is arranged in each of the second mounting holes, the bottom of each of the plastic dust collectors is communicated with the collecting hopper, and the star-shaped unloader is arranged on the bottom of the collecting hopper.

[0012] Preferably, the dust collecting device further comprises a mounting pipe, the air inlet of the air guiding mechanism is connected with the air outlet of the dust suction main pipe, the air outlet of the air guiding mechanism is connected with one end of the mounting pipe, the other end of the mounting pipe is in a closed structure, and the air inlets of the plastic dust collectors are communicated with the mounting pipe.

[0013] Preferably, the air guiding mechanism comprises an air guiding fan, an air guiding inlet pipe and an air guiding outlet pipe, one end of the air guiding inlet pipe is connected with the air outlet of the dust suction main pipe, the other end of the air guiding inlet pipe is connected with the air inlet of the air guiding fan, the air outlet of the air guiding fan is connected with one end of the air guiding outlet pipe, and the other end of the air guiding outlet pipe is connected with one end of the mounting pipe; the collecting component is a dust collecting chamber, a mounting opening is arranged on one side of the dust collecting chamber, a sealable door capable of being opened and closed is arranged at the mounting opening, a plurality of third mounting holes are arranged on the top of the dust collecting chamber, one of the plastic dust collectors is arranged in each of the third mounting holes, and the bottom of each of the plastic dust collectors is communicated with the dust collecting chamber.

[0014] The utility model discloses relative to prior art has obtained following technical effect:

[0015] The bottom of each plastic dust collector in the straw processing dust removal and screening discharge collecting system is communicated with a collecting component, the air inlet of each plastic dust collector is communicated with the air outlet of the dust suction main pipe, the air containing dust and screening discharge in the dust suction main pipe is sucked to the air inlet of the plastic dust collector by the air induction mechanism, the air containing dust and screening discharge rotates at high speed in the plastic dust collector, dust and screening discharge rub against the inner wall of the plastic dust collector to generate static electricity, dust and screening discharge are electrified negatively, the inner wall of the plastic dust collector is electrified positively, and the dust and screening discharge are attracted to the inner wall of the plastic dust collector, thereby, the dust removal effect is strengthened, the power consumption and cost are reduced compared with the cloth bag dust collector. Meanwhile, the screening discharge generated by the straw screening and impurity removing machine is sucked to the plastic dust collector through the dust suction main pipe together with the air containing dust, without increasing additional air volume and power consumption, and without needing to use a belt conveyor to convey the screening discharge, the problems of serious dust pollution in the straw processing site, low conveying efficiency caused by inflexible belt conveying, many devices and disordered site arrangement are solved, and the dust and screening discharge enter the collecting component, that is, the function of collecting the screening discharge is achieved while the dust is treated. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings described in the following only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 A front view of the straw processing dust removal and screening discharge collecting system provided by the first embodiment of the present application;

[0018] Figure 2 A front view of the dust removal and screening discharge collecting device in the straw processing dust removal and screening discharge collecting system provided by the first embodiment of the present application when the air induction mechanism is not installed;

[0019] Figure 3 A top view of the mounting plate in the straw processing dust removal and screening discharge collecting system provided by the first embodiment of the present application;

[0020] Figure 4 A front view of the plastic dust collector in the straw processing dust removal and screening discharge collecting system provided by the first embodiment of the present application;

[0021] Figure 5 A top view of the plastic dust collector in the straw processing dust removal and screening discharge collecting system provided by the first embodiment of the present application;

[0022] Figure 6 A front view of the dust removal and screening discharge collecting device in the straw processing dust removal and screening discharge collecting system provided by the second embodiment of the present application;

[0023] Figure 7 The dust collection device in the dust removal and screening and discharging collection system for straw processing provided by the second embodiment of the utility model is a front view when the dust collection device is not installed with an air guide mechanism.

[0024] Figure 8 The side view of the dust collection device in the dust removal and screening and discharging collection system for straw processing provided by the second embodiment of the utility model.

[0025] Figure 9 The front view of the plastic dust collector in the dust removal and screening and discharging collection system for straw processing provided by the second embodiment of the utility model.

[0026] The drawing mark explanation: 1, first dust cover;2, second dust cover;3, third dust cover;4, first dust suction branch pipe;5, second dust suction branch pipe;6, third dust suction branch pipe;7, first air door;8, second air door;9, dust suction main pipe;10, air guide inlet pipe;11, air guide fan;12, air guide outlet pipe;13, chimney;14, air inlet main pipe;15, shell;16, air outlet main pipe;17, collection hopper;18, supporting leg;19, star type discharger;20, compression and packing device;21, partition plate;22, air inlet chamber;23, air outlet chamber;24, fixed pipe;25, connecting hose;26, mounting plate;27, second mounting hole;28, cylinder;29, inverted cone cylinder;30, dust collector air inlet pipe;31, dust collector air outlet pipe;32, limiting plate;33, fixed plate;34, mounting pipe;35, dust collection chamber;36, sealing door;37, straw pulverizer;38, straw conveyor;39, straw screening and impurity removing machine. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] The utility model aims at providing a dust removal and screening and discharging collection system for straw processing, which reduces power consumption and cost, and solves the problems of serious dust pollution in straw processing site, low conveying efficiency caused by inflexible belt conveying, and disorderly arrangement of equipment on site.

[0029] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0030] Embodiment one:

[0031] As Figures 1-5 shown in the figure, the embodiment provides a dust removal and sieve underfeed collection system for straw processing, which comprises a dust suction device and a dust removal and collection device. The dust suction device comprises a first dust suction hood 1, a second dust suction hood 2, a third dust suction hood 3, a dust suction main pipe 9, a first dust suction branch pipe 4, a second dust suction branch pipe 5, and a third dust suction branch pipe 6. The first dust suction hood 1 is used to cover the outside of a straw pulverizer 37. The first dust suction hood 1 is connected with the dust suction main pipe 9 through the first dust suction branch pipe 4, so that the dust generated in the working process of the straw pulverizer 37 enters the dust suction main pipe 9 through the first dust suction branch pipe 4. The second dust suction hood 2 is used to cover the outside of a straw conveyor 38. The second dust suction hood 2 is connected with the dust suction main pipe 9 through the second dust suction branch pipe 5, so that the dust generated in the working process of the straw conveyor enters the dust suction main pipe 9 through the second dust suction branch pipe 5. The third dust suction hood 3 is used to cover the outside of a straw screening and impurity removing machine 39. The bottom of the third dust suction hood 3 is connected with the dust suction main pipe 9 through the third dust suction branch pipe 6, so that the sieve underfeed of the straw screening and impurity removing machine 39 enters the dust suction main pipe 9 through the third dust suction branch pipe 6.

[0032] The dust removal and collection device comprises a collection component, an air induction mechanism, and a plurality of plastic dust collectors arranged on the upper part of the collection component. The bottom of each plastic dust collector is connected with the collection component, and the air inlet of each plastic dust collector is connected with the air outlet of the dust suction main pipe 9. The air induction mechanism is used to pump the air containing dust and sieve underfeed in the dust suction main pipe 9 to the air inlets of the plastic dust collectors.

[0033] Specifically, the top of the first dust suction hood 1 is connected with the dust suction main pipe 9 through the first dust suction branch pipe 4, and a first air door 7 is arranged on the first dust suction branch pipe 4. The top of the second dust suction hood 2 is connected with the dust suction main pipe 9 through the second dust suction branch pipe 5, and a second air door 8 is arranged on the second dust suction branch pipe 5.

[0034] In this embodiment, two straw conveyors 38 and two straw screening and impurity removing machines 39 are arranged. One second dust suction hood 2 is arranged on the outside of each straw conveyor 38, and one third dust suction hood 3 is arranged on the outside of each straw screening and impurity removing machine 39. The straw pulverizer 37, one straw conveyor 38, one straw screening and impurity removing machine 39, another straw conveyor 38, and another straw screening and impurity removing machine 39 are sequentially connected, forming a processing line.

[0035] As Figure 4 and Figure 5As shown, the plastic dust collector comprises a dust collector body, a dust collector air inlet pipe 30 and a dust collector air outlet pipe 31. The dust collector body is closed at the top and open at the bottom. The dust collector body is arranged at the upper part of the collecting component, and the bottom of the dust collector body is communicated with the collecting component. The dust collector air inlet pipe 30 is arranged at one side of the top of the dust collector body and communicated with the dust collector body. The dust collector air outlet pipe 31 penetrates the top of the dust collector body and extends into the dust collector body. The height of the bottom end of the dust collector air outlet pipe 31 is lower than the arrangement height of the dust collector air inlet pipe 30.

[0036] In order to make the air outlet stable and uniform, the plastic dust collector further comprises a filter pipe. The filter pipe is open at the top and closed at the bottom. The top of the filter pipe is connected with the bottom of the dust collector air outlet pipe 31. The sidewall of the filter pipe is provided with a plurality of through holes.

[0037] The plastic dust collector in the embodiment is processed by injection molding method. The wall is smooth and the size is accurate. The material for injection molding is polyethylene, polypropylene or polyester, which is an electrical insulator. The dust and the undersize material are rotated at high speed in the plastic dust collector. The dust and the undersize material are electrified by friction with the inner wall of the plastic dust collector. The dust and the undersize material are negatively charged, and the inner wall of the plastic dust collector is positively charged. They attract each other, thereby greatly strengthening the dust removal effect. It is especially suitable for processing the dust and the undersize material generated in the straw processing. The dust removal efficiency is greater than 98%. Almost no dust and undersize material can be seen at the total air outlet. The power consumption is reduced by more than 50% compared with the bag dust collector. Compared with the bag dust collector, the power consumption and cost are reduced.

[0038] The undersize material generated by the straw screening and impurity removing machine 39 is sucked into the plastic dust collector together with the dust-containing air through the dust suction main pipe 9. No additional air volume and power consumption is increased. The belt conveyor is not needed to convey the undersize material. The problems of serious dust pollution in the straw processing site, low conveying efficiency caused by inflexible belt conveying, multiple devices and disordered site layout are solved. The dust and the undersize material enter the collecting component. While the dust is treated, the function of collecting the undersize material is also achieved. It is suitable for collecting the undersize material generated in the straw processing and impurity removing. It will not be blocked. The undersize material can be collected economically, hygienically, simply and efficiently.

[0039] The dust collecting device in the embodiment further comprises a shell 15, a partition plate 21 and a connecting mechanism. The shell 15 is closed at the top and open at the bottom, and is arranged on the top of the collecting component. The partition plate 21 is arranged in the shell 15. The upper part of the partition plate 21 forms an air outlet chamber 23. The partition plate 21 and the collecting component form an air inlet chamber 22. The air inlets of the plastic dust collectors are communicated with the air inlet chamber 22. The connecting mechanism is arranged in the air inlet chamber 22. The air outlets of the plastic dust collectors are communicated with the air outlet chamber 23 through the connecting mechanism. An air inlet main pipe 14 is arranged on one side of the air inlet chamber 22. The air outlet of the dust suction main pipe 9 is connected with the air inlet main pipe 14. An air outlet main pipe 16 is arranged on the other side of the air outlet chamber 23. The air outlet main pipe 16 is connected with the air inlet of the air guiding mechanism.

[0040] The connecting mechanism comprises a plurality of connecting assemblies. Each connecting assembly comprises a fixed pipe 24 and a connecting hose 25. A plurality of first mounting holes are arranged on the partition plate 21. The upper end of each fixed pipe 24 is arranged at the bottom of the partition plate 21 and corresponds to a first mounting hole. The upper end of the connecting hose 25 is connected with the lower end of the fixed pipe 24. The lower end of each connecting hose 25 is connected with the air outlet of a plastic dust collector. Specifically, the lower end of the connecting hose 25 is connected with the dust collector air outlet pipe 31 of a plastic dust collector.

[0041] Specifically, the upper end of the connecting hose 25 is sleeved on the outside of the fixed pipe 24 and is fastened by a first pipe clamp. The lower end of the connecting hose 25 is sleeved on the outside of the dust collector air outlet pipe 31 and is fastened by a second pipe clamp, so as to ensure that the connection is not air leakage.

[0042] In the embodiment, the outer diameter of the fixed pipe 24 is 110 mm, and the length is 80 mm. The inner diameter of the connecting hose 25 is 110 mm. The connecting hose 25 in the embodiment is a polyurethane copper wire hose.

[0043] The air guiding mechanism comprises an air guiding fan 11, an air guiding inlet pipe 10 and an air guiding outlet pipe 12. One end of the air guiding inlet pipe 10 is connected with the air outlet main pipe 16. The other end of the air guiding inlet pipe 10 is connected with the air inlet of the air guiding fan 11. The air outlet of the air guiding fan 11 is connected with one end of the air guiding outlet pipe 12. The other end of the air guiding outlet pipe 12 is used to be connected with the chimney 13.

[0044] The collecting component comprises a support frame, a collecting bucket 17, a mounting plate 26 and a star-shaped discharger 19. The support frame is mounted at the lower part of the collecting bucket 17. The collecting bucket 17 is open at the top and the bottom. The bottom of the shell 15 is connected to the top of the collecting bucket 17. The mounting plate 26 covers the opening at the top of the collecting bucket 17. A settling chamber is formed between the mounting plate 26 and the collecting bucket 17. A plurality of second mounting holes 27 are arranged on the mounting plate 26. The number of the second mounting holes 27 is the same as that of the first mounting holes. A plastic dust collector is mounted in each second mounting hole 27. The bottom of each plastic dust collector is communicated with the collecting bucket 17. The star-shaped discharger 19 is arranged at the bottom of the collecting bucket 17. The star-shaped discharger 19 can prevent external air from entering.

[0045] The embodiment further comprises a compression packaging device 20 arranged below the collecting bucket 17. The lower part of the collecting bucket 17 is in a reverse conical structure for facilitating collection.

[0046] The support frame in the embodiment comprises a plurality of legs 18. The upper end of each leg 18 is connected to the collecting bucket 17, thereby supporting the collecting bucket 17.

[0047] Specifically, the dust collector body comprises a cylinder 28 and a reverse conical cylinder 29 connected in sequence from top to bottom. The outer part of the cylinder 28 is fixedly sleeved with a limiting plate 32. The lower end of the reverse conical cylinder 29 is in an open structure. The upper end of the cylinder 28 is in a closed structure. A dust collector air inlet pipe 30 is arranged at one side of the upper part of the cylinder 28. A dust collector air outlet pipe 31 penetrates through the top of the cylinder 28 and extends into the cylinder 28 and the reverse conical cylinder 29.

[0048] In the specific embodiment, the inner diameter and the outer diameter of the cylinder 28 of the dust collector body are 306 mm and 314 mm respectively. The inner diameter of the dust collector air inlet pipe 30 and the dust collector air outlet pipe 31 is 103 mm, and the outer diameter is 110 mm. The height of the plastic dust collector is 718 mm.

[0049] Specifically, the second mounting hole 27 is a circular hole with a diameter of 314 mm. The dust collector body can be pressed into and clamped in the second mounting hole 27, and the limiting plate 32 is located above the mounting plate 26 for limiting. The outer wall of the dust collector body is tightly fitted with the second mounting hole 27. Further, in order to improve the sealing performance of the plastic dust collector installation, the dust collector body can be bonded in the second mounting hole 27.

[0050] In the specific embodiment, the shell 15 and the collecting bucket 17 are made of steel plates. The lower edge of the shell 15 is welded to the upper edge of the collecting bucket 17. The mounting plate 26 is a steel plate welded to the top of the collecting bucket 17. The partition plate 21 is a steel plate welded in the shell 15. The upper end of each fixed tube 24 is welded to the bottom of the partition plate 21. In the embodiment, full welding is adopted, so that the welds will not leak air.

[0051] The mounting plate 26 in the embodiment is square, with a side length of 2.9 m and a thickness of 8 mm, and the second mounting holes 27 are arranged in 7 rows and 7 columns, a total of 49, with a hole center spacing of 380 mm.

[0052] The device in the embodiment is installed with a total of 49 plastic dust collectors, and can process 15,000-25,000 cubic meters of air containing dust and screen undersize per hour.

[0053] The embodiment also provides a use method of the dust removal and screen undersize collection system for straw processing, including the following steps: covering the first dust hood 1, the second dust hood 2 and the third dust hood 3 on the outside of the straw pulverizer 37, the straw conveyor 38 and the straw screening and impurity removing machine 39 respectively, starting the induced draft mechanism, so that the inside of the first dust hood 1, the second dust hood 2 and the third dust hood 3 maintains a micro-negative pressure state, and the air containing dust and screen undersize in the dust suction main pipe 9 is suctioned to the air inlet of the plastic dust collector, the air containing dust and screen undersize rotates at high speed in the plastic dust collector, gas-solid separation is performed, clean air is discharged from the air outlet of the plastic dust collector, and dust and screen undersize enters the collection component.

[0054] Specifically, the air containing dust and screen undersize enters the air inlet chamber 22 from the air inlet main pipe 14, can only pass through the dust collector air inlet pipe 30 of the plastic dust collector to enter the dust collector main body, rotates at high speed in the dust collector main body, gas-solid separation is performed, clean air is discharged from the dust collector air outlet pipe 31, enters the air outlet chamber 23 through the connecting hose 25 and the fixed pipe 24, is then suctioned out by the induced draft fan 11 and discharged through the chimney 13. The dust and screen undersize falls from the bottom of the dust collector main body, enters the settling chamber and finally falls into the compression and packaging device 20 through the star-shaped unloader 19, is packaged and then stored for takeout.

[0055] Embodiment two:

[0056] As shown in Figures 6-9 The dust removal and collection device in the embodiment also includes a mounting pipe 34, the air inlet of the induced draft mechanism is connected with the air outlet of the dust suction main pipe 9, the air outlet of the induced draft mechanism is connected with one end of the mounting pipe 34, and the other end of the mounting pipe 34 is a closed structure, and the air inlets of the plastic dust collectors are in communication with the mounting pipe 34.

[0057] Specifically, the induced draft mechanism includes the induced draft fan 11, the induced draft inlet pipe 10 and the induced draft outlet pipe 12, one end of the induced draft inlet pipe 10 is connected with the air outlet of the dust suction main pipe 9, the other end of the induced draft inlet pipe 10 is connected with the air inlet of the induced draft fan 11, the air outlet of the induced draft fan 11 is connected with one end of the induced draft outlet pipe 12, and the other end of the induced draft outlet pipe 12 is connected with one end of the mounting pipe 34.

[0058] In this embodiment, the collecting component is a dust collection chamber 35. An installation port is provided on one side of the dust collection chamber 35, and a sealing door 36 that can be opened and closed is installed at the installation port. This allows for easy entry into the dust collection chamber 35 when the sealing door 36 is opened, and keeps the dust collection chamber 35 sealed when the sealing door 36 is closed. Multiple third mounting holes are provided on the top of the dust collection chamber 35, and a plastic dust collector is installed in each of these third mounting holes. The bottom of each plastic dust collector communicates with the dust collection chamber 35.

[0059] In this embodiment, multiple plastic dust collectors are arranged in two rows, with the two rows of plastic dust collectors respectively arranged on both sides of the mounting pipe 34.

[0060] like Figure 9 As shown, the plastic dust collector includes a dust collector body, a dust collector inlet pipe 30, and a dust collector outlet pipe 31. The dust collector body includes a cylindrical cylinder 28 and an inverted conical cylinder 29 connected sequentially from top to bottom. A fixing plate 33 is fixedly fitted onto the outside of the inverted conical cylinder 29, which is installed in a third mounting hole. The fixing plate 33 is fixed to the top of the dust collection chamber 35 by multiple bolts. The lower end of the inverted conical cylinder 29 is an open structure and communicates with the dust collection chamber 35. The upper end of the cylindrical cylinder 28 is a closed structure. The dust collector inlet pipe 30 is located on one side of the upper part of the cylindrical cylinder 28 and is connected to the mounting pipe 34. The dust collector outlet pipe 31 passes through the top of the cylindrical cylinder 28 and extends into the cylindrical cylinder 28 and the inverted conical cylinder 29. The outer end of the dust collector outlet pipe 31 communicates with the outside.

[0061] During operation, the induced draft fan 11 is turned on, drawing the dust-laden air and screened material from the dust collection main pipe 9 into the installation pipe 34. The air then enters the main body of the dust collector through the dust collector inlet pipe 30 and rotates at high speed inside the main body, resulting in gas-solid separation. Clean air is discharged from the dust collector outlet pipe 31, while dust and screened material fall from the bottom of the main body of the dust collector and into the dust collection chamber 35.

[0062] This specification uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A dust removal and sieve underflow collection system for straw processing, characterized in that, The dust collection device comprises a dust suction device and a dust collection device, the dust suction device comprises a first dust cover, a second dust cover, a third dust cover, a dust suction main pipe, a first dust suction branch pipe, a second dust suction branch pipe and a third dust suction branch pipe, the first dust cover is used for covering the outside of the straw pulverizer, the first dust cover is communicated with the dust suction main pipe through the first dust suction branch pipe, the second dust cover is used for covering the outside of the straw conveyor, the second dust cover is communicated with the dust suction main pipe through the second dust suction branch pipe, the third dust cover is used for covering the outside of the straw screening and impurity removing machine, the bottom of the third dust cover is communicated with the dust suction main pipe through the third dust suction branch pipe; the dust collection device comprises a collecting component, an air induction mechanism and a plurality of plastic dust collectors arranged on the upper part of the collecting component, the bottom of each plastic dust collector is communicated with the collecting component, the air inlet of each plastic dust collector is communicated with the air outlet of the dust suction main pipe, and the air induction mechanism is used for sucking and sending the air containing dust and the undersize material in the dust suction main pipe to the air inlets of the plastic dust collectors.

2. The straw processing dust removal and sieve underflow collection system according to claim 1, characterized in that, The plastic dust collector comprises a dust collector main body, a dust collector air inlet pipe and a dust collector air outlet pipe, the top of the dust collector main body is closed and the bottom is open, the dust collector main body is arranged on the upper part of the collecting component, and the bottom of the dust collector main body is communicated with the collecting component, the dust collector air inlet pipe is arranged on one side of the top of the dust collector main body and is communicated with the dust collector main body, and the dust collector air outlet pipe penetrates through the top of the dust collector main body and extends into the dust collector main body, the height of the bottom end of the dust collector air outlet pipe is lower than the arrangement height of the dust collector air inlet pipe.

3. The straw processing dust removal and sieve underflow collection system according to claim 2, characterized in that, The plastic dust collector further comprises a filter pipe, the top of the filter pipe is open and the bottom is closed, the top of the filter pipe is connected with the bottom of the dust collector air outlet pipe, and the sidewall of the filter pipe is provided with a plurality of through holes.

4. The straw processing dust removal and sieve underflow collection system according to claim 1, characterized in that, The dust collection device further comprises a shell, a partition plate and a connecting mechanism, the top of the shell is closed and the bottom is open, the shell is arranged on the top of the collecting component, the shell is provided with the partition plate, the upper part of the partition plate forms an air outlet chamber, an air inlet chamber is formed between the partition plate and the collecting component, the air inlets of the plastic dust collectors are communicated with the air inlet chamber, the connecting mechanism is arranged in the air inlet chamber, the air outlets of the plastic dust collectors are communicated with the air outlet chamber through the connecting mechanism, one side of the air inlet chamber is provided with an air inlet main pipe, the air outlet of the dust suction main pipe is connected with the air inlet main pipe, the other side of the air outlet chamber is provided with an air outlet main pipe, and the air outlet main pipe is connected with the air inlet of the air induction mechanism.

5. The straw processing dust removal and sieve underflow collection system according to claim 4, characterized in that, The connecting mechanism comprises a plurality of connecting assemblies, each connecting assembly comprises a fixed pipe and a connecting hose, a plurality of first mounting holes are arranged on the partition plate, the upper end of each fixed pipe is arranged on the bottom of the partition plate and corresponds to a position of the first mounting hole, the upper end of the connecting hose is connected with the lower end of the fixed pipe, and the lower end of each connecting hose is connected with the air outlet of one plastic dust collector.

6. The straw processing dust removal and sieve underflow collection system according to claim 4, characterized in that, The air leading mechanism comprises an air leading fan, an air leading inlet pipe and an air leading outlet pipe, one end of the air leading inlet pipe is connected with the air outlet main pipe, the other end of the air leading inlet pipe is connected with the air inlet of the air leading fan, the air outlet of the air leading fan is connected with one end of the air leading outlet pipe, and the other end of the air leading outlet pipe is used for being connected with the chimney.

7. The straw processing dust removal and sieve underflow collection system according to claim 4, characterized in that, The collecting component comprises a support frame, a collecting bucket, a mounting plate and a star-shaped discharger, the support frame is installed at the lower part of the collecting bucket, the top of the collecting bucket is open, the bottom of the collecting bucket is open, the bottom of the shell is connected with the top of the collecting bucket, the mounting plate is arranged at the opening of the top of the collecting bucket, a plurality of second mounting holes are arranged on the mounting plate, one plastic dust remover is installed in each second mounting hole, the bottom of each plastic dust remover is communicated with the collecting bucket, and the star-shaped discharger is arranged at the bottom of the collecting bucket.

8. The straw processing dust removal and sieve underflow collection system according to claim 1, characterized in that, The dust collecting device further comprises a mounting pipe, the air inlet of the air leading mechanism is connected with the air outlet of the dust suction main pipe, the air outlet of the air leading mechanism is connected with one end of the mounting pipe, the other end of the mounting pipe is in a closed structure, and the air inlets of the plastic dust removers are communicated with the mounting pipe.

9. The straw processing dust removal and sieve underflow collection system according to claim 8, characterized in that, The air leading mechanism comprises an air leading fan, an air leading inlet pipe and an air leading outlet pipe, one end of the air leading inlet pipe is connected with the air outlet main pipe, the other end of the air leading inlet pipe is connected with the air inlet of the air leading fan, the air outlet of the air leading fan is connected with one end of the air leading outlet pipe, and the other end of the air leading outlet pipe is used for being connected with the mounting pipe; the collecting component is a dust collecting chamber, one side of the dust collecting chamber is provided with a mounting opening, a sealable door is installed at the mounting opening, a plurality of third mounting holes are arranged on the top of the dust collecting chamber, one plastic dust remover is installed in each third mounting hole, and the bottoms of the plastic dust removers are communicated with the dust collecting chamber.

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