Cotton stalk pulping material preparation system
Through the combined system of the pretreatment unit, air selection treatment unit and cleaning unit, the multi-stage cyclone separator and spray dust removal tower are used to remove impurities in cotton stalk raw materials, solving the problem of impurities in cotton stalk pulping, and achieving efficient impurity removal and environmental improvement.
Patent Information
- Application Number
- CN202510633778.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-16
- Publication Date
- 2025-07-11
AI Technical Summary
Impurities exist in cotton stalk raw materials such as residual cotton, plastic film and dust, which affects the pulping and papermaking process and effectively removes these impurities.
A combination system of pretreatment part, air selection treatment part and cleaning part is adopted, including a grass crushing mechanism, air selection treatment part and cleaning part, and impurities are removed by using a multi-stage cyclone separator and a spray dust removal tower, and cleaning is combined with a roller mow washing machine and an inclined spiral dehydrator.
It effectively removes heavy impurities and light dust from cotton stalk raw materials, improves the working environment, improves the pulping quality and production efficiency, and avoids the defects of traditional methods.
Smart Images
Figure CN120291389A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of papermaking, and particularly to a cotton stalk pulping and stock preparation system. Background Art
[0002] China is the second largest cotton-producing country in the world, with rich and concentrated cotton stalk resources. As high-quality papermaking raw materials, cotton stalk resources have attracted the attention of major papermaking enterprises. However, due to the influence of various links such as planting and storage, a small amount of residual impurities such as cotton, plastic film, and dust will enter the cotton stalk raw materials. These impurities will have a great impact on the pulping, papermaking process, and finished products. Therefore, removing residual impurities such as cotton, plastic film, and dust has become an urgent problem to be solved in cotton stalk pulping and stock preparation. Summary of the Invention
[0003] In view of this, an embodiment of the present invention provides a cotton stalk pulping and stock preparation system, whose main purpose is to remove impurities and provide qualified cotton stalk flakes.
[0004] To achieve the above object, the present invention mainly provides the following technical solutions:
[0005] An embodiment of the present invention provides a cotton stalk pulping and stock preparation system, which includes: a pretreatment unit, a pneumatic separation processing unit, and a cleaning unit;
[0006] The pretreatment unit includes a straw crushing mechanism, a belt conveyor, and an impurity removal mechanism that are connected in sequence;
[0007] The pneumatic separation processing unit includes a first fan, a first cyclone separator, a second fan, a second cyclone separator, a third fan, and a spray dust removal tower. The inlet of the first fan is connected to the discharge port of the impurity removal mechanism, the outlet of the first fan is connected to the tangential inlet of the first cyclone separator, the upper outlet of the first cyclone separator is connected to the inlet of the second fan, the outlet of the second fan is connected to the tangential inlet of the second cyclone separator, the upper outlet of the second cyclone separator is connected to the inlet of the third fan, the outlet of the third fan is connected to the inlet of the spray dust removal tower, and the lower outlet of the second cyclone separator is connected to a collection bin;
[0008] The cleaning unit includes a roller type straw washer and an inclined screw dehydrator, and the lower outlet of the first cyclone separator, the roller type straw washer, and the inclined screw dehydrator are connected in sequence.
[0009] The object of the present invention and the solution to its technical problems can be further realized by adopting the following technical measures.
[0010] Optionally, the straw crushing mechanism includes a first housing and two parallel rotating shafts located inside the first housing, and a plurality of cutting blades are arranged axially in sequence on the rotating shafts.
[0011] Optionally, the impurity removing mechanism includes a second housing, a plurality of horn rollers, and a screw conveyor shaft. A sieve plate is provided in the middle of the second housing for separating the second housing into an upper space and a lower ash hopper. The plurality of horn rollers are arranged in sequence in the upper space, and the screw conveyor shaft is coaxially arranged in the lower ash hopper.
[0012] Optionally, the roller type grass washer includes a third housing and a plurality of grass washing rollers. The plurality of grass washing rollers are arranged horizontally in sequence in the third housing. A water injection pipe is connected to the upper end face of the third housing. A plurality of conical hoppers are arranged in sequence on the lower end face of the third housing, and the lower ends of the conical hoppers are sequentially connected to a first on-off valve, a slag collecting cylinder, and a second on-off valve.
[0013] Optionally, it further includes a screw conveyor mechanism, and the screw conveyor mechanism is connected to the lower end of the collection bin.
[0014] Optionally, the spray dust removal tower includes a tower body, a spray pipe, a water distribution plate, and a plurality of adsorption layers. The spray pipe penetrates through the side wall of the tower body and is connected to the water distribution plate. The plurality of adsorption layers are arranged in sequence in the tower body.
[0015] Optionally, it further includes an inclined screening mechanism. An exhaust port is provided at the upper end of the tower body, a liquid discharge port at the lower end of the tower body is located in an overflow tank, and the inclined screening mechanism is located below the overflow port of the overflow tank.
[0016] Optionally, the straw crushing mechanism further includes a dust collection hood. The dust collection hood is arranged at the upper end inlet of the first housing, and the dust collection hood is connected to the inlet of the third fan.
[0017] Optionally, the top wall of the second housing is connected to the inlet of the third fan.
[0018] Optionally, it further includes a first spiral blade and a second spiral blade. The first spiral blade and the second spiral blade are arranged in sequence on the shaft side of the screw conveyor shaft, and the spiral directions of the first spiral blade and the second spiral blade are opposite.
[0019] By means of the above technical solutions, the present invention has at least the following advantages:
[0020] Add forage to the straw crushing mechanism through a loader. The crushed forage is conveyed to the impurity removal mechanism through a belt conveyor. In the impurity removal mechanism, heavy dust, debris, etc. in the forage are separated. The forage after removing heavy impurities enters the first cyclone separator through the first fan. The light impurities therein enter the second fan through the upper outlet of the first cyclone separator and then reach the second cyclone separator. The residual cotton, plastic film and other impurities therein enter the collection bin through the lower outlet of the second cyclone separator. The lighter dust therein enters the third fan through the upper outlet of the second cyclone separator and finally undergoes spray dust reduction in the spray dust removal tower.
[0021] The forage after removing heavy impurities enters the roller type grass washer through the lower outlet of the first cyclone separator. A small amount of dust remaining in the forage is further dissolved in water. The washed forage enters the lower inlet of the inclined screw dehydrator. Driven by the screw shaft, the forage is conveyed to the upper outlet. The water in the forage overflows the surface of the forage plant through the screen below the screw shaft due to the extrusion of the screw shaft, thus realizing the dehydration of the forage.
[0022] This system takes into account the advantages of traditional dry stock preparation, wet stock preparation and air separation stock preparation at the same time, and avoids the disadvantages of high ash content in forage in traditional dry stock preparation and large power consumption in traditional wet stock preparation; adding an air separation treatment part can solve the influence of cotton and plastic film on the pulp in traditional cotton stalk pulping stock preparation; the light dust treatment part can change the working environment of dusty traditional cotton stalk stock preparation and create a good working space for workers; it serves multiple purposes and perfectly solves the problem of cotton stalk stock preparation. Brief Description of the Drawings
[0023] Figure 1 It is a schematic structural diagram of a cotton stalk pulping stock preparation system provided by an embodiment of the present invention;
[0024] Figure 2 It is a side view of the straw crushing mechanism;
[0025] Figure 3 It is a top view of the straw crushing mechanism;
[0026] Figure 4 It is a side view of the impurity removal mechanism;
[0027] Figure 5 It is a front view of the impurity removal mechanism;
[0028] Figure 6 It is a side view of the roller type grass washer;
[0029] Figure 7 It is a top view of the roller type grass washer;
[0030] Figure 8 It is a schematic structural diagram of the spray dust removal tower.
[0031] The reference numerals in the accompanying drawings of the specification include: straw crushing mechanism 1, belt conveyor 2, impurity removal mechanism 3, first blower 4, first cyclone separator 5, second blower 6, second cyclone separator 7, third blower 8, spray dust removal tower 9, collection bin 10, roller type grass washer 11, inclined screw dehydrator 12, first housing 101, rotating shaft 102, cutting blade 103, second housing 301, sheep horn roller 302, screw conveyor shaft 303, sieve plate 304, third housing 1101, grass washing roller 1102, conical hopper 1103, first on-off valve 1104, slag collection cylinder 1105, second on-off valve 1106, water injection pipe 1107, screw conveying mechanism 13, tower body 901, spray pipe 902, water distribution plate 903, adsorption layer 904, inclined screening mechanism 905, exhaust port 906, overflow tank 907, dust collection hood 104, first spiral blade 306, second spiral blade 305. Detailed implementation manners
[0032] To further elaborate on the technical means and effects adopted by the present invention to achieve the intended invention purpose, the following describes in detail the specific implementation manners, structures, features, and effects of the application according to the present invention in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. In addition, the specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.
[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0034] As Figure 1 shown, a cotton stalk pulping and stock preparation system provided by an embodiment of the present invention includes: a pretreatment section, a pneumatic separation treatment section, and a cleaning section;
[0035] The pretreatment section includes a straw crushing mechanism 1, a belt conveyor 2, and an impurity removal mechanism 3 connected in sequence;
[0036] The pneumatic separation treatment section includes a first blower 4, a first cyclone separator 5, a second blower 6, a second cyclone separator 7, a third blower 8, and a spray dust removal tower 9. The inlet of the first blower 4 is connected to the discharge port of the impurity removal mechanism 3, the outlet of the first blower 4 is connected to the tangential inlet of the first cyclone separator 5, the upper outlet of the first cyclone separator 5 is connected to the inlet of the second blower 6, the outlet of the second blower 6 is connected to the tangential inlet of the second cyclone separator 7, the upper outlet of the second cyclone separator 7 is connected to the inlet of the third blower 8, the outlet of the third blower 8 is connected to the inlet of the spray dust removal tower 9, and the lower outlet of the second cyclone separator 7 is connected to the collection bin 10;
[0037] The cleaning section includes a roller-type grass washer 11 and an inclined screw dehydrator 12. The lower end outlet of the first cyclone separator 5, the roller-type grass washer 11, and the inclined screw dehydrator 12 are connected in sequence.
[0038] The working process of the cotton stalk pulping and stock preparation system is as follows:
[0039] Hay is added to the grass crushing mechanism 1 by a loader. The crushed hay is conveyed to the impurity removal mechanism 3 through a belt conveyor 2. In the impurity removal mechanism 3, heavy dust, debris, etc. in the hay are separated. The hay after removing heavy impurities enters the first cyclone separator 5 through the first blower 4. The light impurities therein enter the second blower 6 through the upper end outlet of the first cyclone separator 5 and then reach the second cyclone separator 7. The residual cotton, plastic film and other impurities therein enter the collection bin 10 through the lower end outlet of the second cyclone separator 7. The lighter dust therein enters the third blower 8 through the upper end outlet of the second cyclone separator 7 and finally undergoes spray dust reduction in the spray dust removal tower 9.
[0040] The hay after removing heavy impurities enters the roller-type grass washer 11 through the lower end outlet of the first cyclone separator 5. A small amount of dust remaining in the hay is further dissolved in water. The washed hay enters the lower end inlet of the inclined screw dehydrator 12. Driven by the screw shaft, the hay is conveyed to the upper end outlet. The water in the hay overflows from the surface of the hay plant due to the extrusion of the screw shaft, and the water passes through the screen below the screw shaft, thus realizing the dehydration of the hay.
[0041] Specifically, after adjusting the appropriate air volume and air pressure, the cotton stalk hay enters the first cyclone separator 5 under the action of the first blower 4. The cotton stalk hay with a larger specific gravity falls into the roller-type grass washer 11, while the impurities such as residual cotton, plastic film and fine dust with a lighter specific gravity are discharged from the upper end outlet of the first cyclone separator 5 under the combined action of centrifugal force and the second blower 6.
[0042] Specifically, a filter screen is provided below the screw shaft of the inclined screw dehydrator 12. When the screw shaft drives the hay to move upward, the hay is continuously extruded by the screw blades and the filter screen. The water overflowing from the hay flows downward along the filter screen and passes through the filter screen, thus realizing the dehydration of the hay.
[0043] As Figure 2 and Figure 3 shown, in the specific embodiment, the grass crushing mechanism 1 includes a first housing 101 and two parallel rotating shafts 102 located in the first housing 101. A plurality of cutting blades 103 are arranged axially in sequence on the rotating shafts 102.
[0044] In this embodiment, specifically, the grass-cutting mechanism 1 further includes two driving motors, and the output shaft of each driving motor is connected to one of the rotating shafts 102 through a reducer, thereby driving the two rotating shafts 102 to rotate at different speeds, so that the cutting blades 103 fixed on the rotating shafts 102 cut the cotton stalk material;
[0045] The sheared cotton stalks fall from the lower end outlet of the first housing 101 onto the belt working surface of the belt conveyor 2 .
[0046] like Figure 4 and Figure 5 As shown, in a specific embodiment, the impurity removal mechanism 3 includes a second shell 301, a plurality of ram horn rollers 302 and a screw conveying shaft 303. A sieve plate 304 is provided in the middle of the second shell 301 for dividing the second shell 301 into an upper space and a lower ash hopper. A plurality of ram horn rollers 302 are arranged in sequence in the upper space, and the screw conveying shaft 303 is coaxially arranged in the lower ash hopper.
[0047] In the present embodiment, specifically, a plurality of ram horn rollers 302 are arranged in sequence on the upper surface of the screen plate 304, and the plurality of ram horn rollers 302 rotate in the same direction. The ram horn rollers 302 drive the grass to move longitudinally and transversely, and are discharged from the outlet of the upper space of the second shell 301 through the ram horn rollers 302 in sequence. The grass is struck and loosened by the ram horns of each roller, so that the heavy and miscellaneous dust is separated, and enters the lower ash hopper through the sieve plate 304 under each roller. The spiral conveying shaft 303 rotates, driving the heavy and miscellaneous dust to be discharged from the lower ash hopper in a concentrated manner.
[0048] Specifically, the ram horn rollers 302 at both ends of the second shell 301 are respectively connected to the output shaft of the driving motor through belts, and adjacent ram horn rollers 302 are connected through chains, so as to achieve synchronous and unidirectional rotation of multiple ram horn rollers 302 .
[0049] Specifically, after the heavy impurities are separated out, the fodder enters the first fan 4, which can reduce the wear of the heavy sand and dust on the air conveying equipment and stabilize the load of the first fan 4.
[0050] like Figure 6 and Figure 7 As shown, in a specific embodiment, the roller grass washing machine 11 includes a third shell 1101 and a plurality of grass washing rollers 1102, the plurality of grass washing rollers 1102 are horizontally arranged in the third shell 1101 in sequence, the upper end surface of the third shell 1101 is connected to the water injection pipe 1107, and the lower end surface of the third shell 1101 is sequentially arranged with a plurality of cone buckets 1103, and the lower ends of the cone buckets 1103 are sequentially connected to the first switch valve 1104, the slag collecting barrel 1105 and the second switch valve 1106.
[0051] In this embodiment, specifically, the water injection pipe 1107 injects water into the third shell 1101, and at the same time, the multiple grass washing rollers 1102 rotate in the same direction, and multiple toggle plates are evenly distributed on the shaft side of the grass washing roller 1102, driving the grass to immerse in the washing water. In the water, the grass becomes loose and absorbs water, and the heavy impurities are separated and fall into the cone bucket 1103 and the slag collecting cylinder 1105;
[0052] When the roller grass washer 11 is working, the first switch valve 1104 is opened, the second switch valve 1106 is closed, and the heavy impurities are concentrated into the slag collecting barrel 1105; when discharging slag, the first switch valve 1104 is closed, the second switch valve 1106 is opened, and the slag collecting barrel 1105 is discharged. The slag discharge sequence and cycle are set manually and automatically according to the actual situation.
[0053] like Figure 1 As shown, in a specific embodiment, a screw conveying mechanism 13 is also included, and the screw conveying mechanism 13 is connected to the lower end of the collecting bin 10 .
[0054] In the present embodiment, specifically, when there are a lot of heavy impurities such as residual cotton and plastic film discharged to the collecting bin 10 through the lower end outlet of the second cyclone separator 7, they are discharged collectively through the spiral conveying mechanism 13.
[0055] like Figure 8 As shown, in a specific embodiment, the spray dust removal tower 9 includes a tower body 901, a spray pipe 902, a water distribution tray 903 and a plurality of adsorption layers 904, the spray pipe 902 passes through the side wall of the tower body 901 and is connected to the water distribution tray 903, and the plurality of adsorption layers 904 are vertically arranged in sequence in the tower body 901.
[0056] In this embodiment, specifically, each adsorption layer 904 is formed by stacking a plurality of adsorption balls, and the spray water flows downward from the water distribution plate 903 to the plurality of adsorption layers 904. The dust-laden airflow delivered by the third fan 8 flows from bottom to top through the plurality of adsorption layers 904 in the tower body 901, thereby further purifying the exhaust air.
[0057] like Figure 1 and Figure 8 As shown, in a specific embodiment, an inclined screening mechanism 905 is also included, an exhaust port 906 is provided at the upper end of the tower body 901, a liquid discharge port at the lower end of the tower body 901 is located in the overflow trough 907, and the inclined screening mechanism 905 is located below the overflow port of the overflow trough 907.
[0058] In this embodiment, specifically, the clean air after spraying is discharged from the exhaust port 906, the spray water in the tower body 901 flows into the overflow tank 907, and the discharge port of the tower body 901 is located below the liquid level of the overflow tank 907, which is used to seal the wind pressure in the tower body 901. The inclined screening mechanism 905 receives the overflow spray water, and the large particles of impurities in the water are retained on the screen surface of the inclined screening mechanism 905, and the screened water goes to the water treatment system.
[0059] like Figure 1 As shown, in a specific embodiment, the grass-cutting mechanism 1 further includes a dust collecting hood 104 , which is disposed at an upper inlet of the first shell 101 , and the dust collecting hood 104 is connected to an inlet of the third fan 8 .
[0060] In this embodiment, specifically, when the loader adds cotton stalks to the upper inlet of the first housing 101, the soil attached to the cotton stalks is inevitably blown up, and due to the dust suction effect of the third fan 8, the blown-up soil is absorbed by the dust collecting cover 104;
[0061] Specifically, the dust collecting hood 104 is connected to the inlet of the third fan 8 through the first dust collecting pipe.
[0062] like Figure 1 As shown, in a specific embodiment, the top wall of the second housing 301 is connected to the inlet of the third fan 8 .
[0063] In this embodiment, specifically, the top wall of the second shell 301 is connected to the inlet of the third fan 8 through the second dust collecting pipe. When each horn roller 302 hits and loosens the grass, dust will also be generated in the second shell 301. Due to the dust suction effect of the third fan 8, the dust will also flow to the third fan 8 with the airflow.
[0064] like Figure 4 As shown, in a specific embodiment, it also includes a first spiral blade 306 and a second spiral blade 305. The first spiral blade 306 and the second spiral blade 305 are arranged in sequence on the axial side of the spiral conveying shaft 303, and the spiral direction of the first spiral blade 306 is opposite to the spiral direction of the second spiral blade 305.
[0065] In this embodiment, specifically, the spiral direction of the first spiral blade 306 is opposite to that of the second spiral blade 305. When the spiral conveying shaft 303 rotates, the first spiral blade 306 and the second spiral blade 305 simultaneously convey dust and impurities to the discharge port in the middle of the bottom wall of the lower ash hopper.
[0066] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims described above.
Claims
1. A cotton stalk pulping stock preparation system, characterized in that, Including: A preprocessing unit, the preprocessing unit including a straw crushing mechanism, a belt conveyor, and an impurity removing mechanism connected in sequence; An air separation processing unit, the air separation processing unit including a first blower, a first cyclone separator, a second blower, a second cyclone separator, a third blower, and a spray dust removal tower. The inlet of the first blower is connected to the discharge port of the impurity removing mechanism, the outlet of the first blower is connected to the tangential inlet of the first cyclone separator, the upper end outlet of the first cyclone separator is connected to the inlet of the second blower, the outlet of the second blower is connected to the tangential inlet of the second cyclone separator, the upper end outlet of the second cyclone separator is connected to the inlet of the third blower, the outlet of the third blower is connected to the inlet of the spray dust removal tower, and the lower end outlet of the second cyclone separator is connected to a collection bin; A cleaning unit, the cleaning unit including a roller type grass washer and an inclined screw dehydrator, and the lower end outlet of the first cyclone separator, the roller type grass washer, and the inclined screw dehydrator are connected in sequence.
2. The cotton stalk pulping stock preparation system according to claim 1, wherein The straw crushing mechanism includes a first housing and two parallel rotating shafts located inside the first housing, and a plurality of cutting blades are arranged axially in sequence on the rotating shafts.
3. The cotton stalk pulping stock preparation system according to claim 1, wherein The impurity removing mechanism includes a second housing, a plurality of horn rollers, and a screw conveyor shaft. A sieve plate is provided in the middle of the second housing for separating the second housing into an upper space and a lower ash hopper. A plurality of the horn rollers are arranged in sequence in the upper space, and the screw conveyor shaft is coaxially arranged in the lower ash hopper.
4. The cotton stalk pulping stock preparation system according to claim 1, wherein The roller type grass washer includes a third housing and a plurality of grass washing rollers. A plurality of the grass washing rollers are arranged horizontally in sequence inside the third housing. The upper end surface of the third housing is connected to a water injection pipe. A plurality of cone hoppers are arranged in sequence on the lower end surface of the third housing, and the lower ends of the cone hoppers are connected to a first switching valve, a slag collection cylinder, and a second switching valve in sequence.
5. The cotton stalk pulping stock preparation system according to claim 1, wherein It further includes a screw conveyor mechanism, and the screw conveyor mechanism is connected to the lower end of the collection bin.
6. The cotton stalk pulping stock preparation system according to any one of claims 1 to 5, wherein The spray dust removal tower includes a tower body, a spray pipe, a water distribution plate, and a plurality of adsorption layers. The spray pipe penetrates through the side wall of the tower body and is connected to the water distribution plate, and a plurality of the adsorption layers are arranged in sequence inside the tower body.
7. The cotton stalk pulping stock preparation system according to claim 1, wherein It further includes an inclined screening mechanism. An exhaust port is provided at the upper end of the tower body, the liquid discharge port at the lower end of the tower body is located in an overflow tank, and the inclined screening mechanism is located below the overflow port of the overflow tank.
8. The cotton stalk pulping stock preparation system according to claim 2, wherein The straw crushing mechanism further includes a dust collection hood, the dust collection hood is arranged at the upper end inlet of the first housing, and the dust collection hood is connected to the inlet of the third blower.
9. The cotton stalk pulping stock preparation system according to claim 3, wherein the top wall of the second housing is connected to the inlet of the third fan.
10. The cotton stalk pulping stock preparation system according to claim 3, wherein it further comprises a first spiral blade and a second spiral blade, the first spiral blade and the second spiral blade are arranged in sequence on the shaft side of the spiral conveying shaft, and the spiral directions of the first spiral blade and the second spiral blade are opposite.