Raw material filtering and separating device for preparing paper pulp from crop straws

Abstract

According to the raw material filtering and separating device for preparing the paper pulp from the crop straw, the two-stage crushing process is introduced, and the physical pretreatment effect is greatly improved. The first crushing assembly roughly crushes straw through a crushing motor and symmetrical crushing rollers, the second crushing assembly further refines straw fragments through a servo motor and a rotary disc, the superficial area of the straw is greatly increased through refining treatment, more attack faces are provided for alkali liquor, the alkali liquor can penetrate into a fiber structure more deeply, and therefore the straw crushing efficiency is improved. Meanwhile, dynamic stirring is achieved through a double-shaft motor, a rotating ring and a stirring rod which are arranged in the collision filtering assembly, contact and mixing of straw and alkali liquor are enhanced, fiber bundles are effectively broken, the permeability of the alkali liquor is improved, in addition, an elastic net and a plurality of collision blocks in the collision filtering assembly are used in cooperation, and therefore the effect that the alkali liquor is more stable is achieved. The uniformity of chemical treatment is ensured, and the problems of insufficient reaction and low efficiency in a traditional soaking method are solved.

Description

Technical Field

[0001] The invention relates to the technical field of filtering and sorting devices, and more specifically to a raw material filtering and separating device for making paper pulp from crop straws. Background Art

[0002] In the pulp production industry, straw is an important raw material, and improving its utilization efficiency is of great significance to environmental protection and resource recycling. Traditional straw processing methods usually involve physical crushing and chemical treatment, but these methods still have certain limitations in processing efficiency and quality control.

[0003] In the traditional straw processing process, although physical crushing can provide a good pretreatment for chemical treatment, there are still efficiency problems, especially when the cooked straw is directly soaked in an alkaline solution, the rate of chemical treatment is often slow. This is mainly because the traditional soaking method cannot fully open the fiber structure, limiting the permeability and reaction rate of the alkali solution. In addition, the soaking treatment of straw in alkali solution may also lead to uneven chemical reactions, affecting the quality and yield of the final product.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a raw material filtering and separation device for making pulp from crop straw. Summary of the invention

[0005] The object of the present invention is to provide a raw material filtering and separation device for making pulp from crop straw to solve the above-mentioned problems.

[0006] In order to achieve the above purpose, the technical solution provided by an embodiment of the present invention is as follows:

[0007] A raw material filtering and separation device for making pulp from crop straws comprises: a filtering and separating box, a first crushing assembly, a second crushing assembly and a collision filtering assembly, wherein a support frame is installed at the bottom end of the filtering and separating box, and a material guide frame is installed at the top end of the filtering and separating box, a material guide port is provided on the filtering and separating box, and a first crushing assembly, a second crushing assembly and a collision filtering assembly are sequentially installed in the filtering and separating box from top to bottom; the first crushing assembly comprises a first crushing box, a crushing groove matching the material guide port is provided on the first crushing box, a crushing motor is fixedly connected to the outer end of the first crushing box, a pair of mutually symmetrical crushing rollers are rotatably connected in the first crushing box, gears are installed on the pair of crushing rollers, a pair of gears are meshed and connected, the output end of the crushing motor is fixedly connected to one of the crushing rollers, the first crushing assembly is used to achieve preliminary crushing of the raw material; the second crushing assembly is used to achieve further crushing of the raw material; the collision filtering assembly is used to achieve filtering of impurities in the raw material.

[0008] As a further improvement of the present invention, a first baffle plate and a second baffle plate are installed on the inner wall of the filtering and separating box and located at the lower side of the first crushing box, and the first baffle plate and the second baffle plate are arranged at an incline.

[0009] As a further improvement of the present invention, the second crushing assembly includes a servo motor, a turntable is fixedly connected to the output end of the servo motor, a slide is rotatably connected to the turntable, a slide is fixedly connected to the inner wall of the filtering and separation box, and the slide and the slide are slidably connected.

[0010] As a further improvement of the present invention, a second crushing block is fixedly connected to one end of the slide plate, and a plurality of evenly distributed crushing rods are installed on the second crushing block. The angle between the ends of the plurality of crushing rods close to the second baffle plate and the horizontal line is greater than the angle between the hypotenuse of the second baffle plate and the horizontal line.

[0011] As a further improvement of the present invention, the collision filtering assembly includes a separation barrel, which is installed in the filtering separation box and is arranged on one side of the second baffle. The top of the separation barrel is fixedly connected to a feed baffle.

[0012] As a further improvement of the present invention, an elastic net is installed in the separation barrel, a bracket is fixedly connected to the inner wall of the separation barrel, a fixing ring is fixedly connected to the bracket, a dual-axis motor is installed at the bottom end of the fixing ring, a rotating ring is rotatably connected in the fixing ring, and the upper and lower output ends of the dual-axis motor are respectively fixedly connected to the rotating ring and the stirring rod.

[0013] As a further improvement of the present invention, a convex rod is fixedly connected to the top of the rotating ring, one end of the convex rod is rotatably connected to the rotating rod, one end of the feed baffle is fixedly connected to a sealing cylinder, a sealing block is slidably connected inside the sealing cylinder, and the sealing block is rotatably connected to the rotating rod.

[0014] As a further improvement of the present invention, one end of the sealing cylinder penetrates the feed baffle and extends to the outside of the feed baffle to be fixedly connected with a transmission pipeline communicating therewith, and a one-way valve is installed on the transmission pipeline.

[0015] As a further improvement of the present invention, a plurality of evenly distributed impact grooves are provided at the bottom of the separation barrel, a breathable and waterproof membrane is installed in the plurality of impact grooves, and the transmission pipeline is connected to the plurality of impact grooves via a connecting pipeline.

[0016] As a further improvement of the present invention, a plurality of evenly distributed collision blocks are fixedly connected to the inner wall of the separation barrel.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] This scheme greatly improves the effect of physical pretreatment by introducing a two-stage crushing process. The first crushing component roughly crushes the straw through the crushing motor and symmetrical crushing rollers, while the second crushing component further refines the straw fragments using the servo motor and turntable. The refinement process greatly increases the surface area of ​​the straw, providing more attack surfaces for the alkali solution, allowing the alkali solution to penetrate deeper into the fiber structure and accelerate the chemical reaction rate. At the same time, the built-in dual-axis motor, rotating ring and stirring rod in the collision filtration component realize dynamic stirring, which enhances the contact and mixing of the straw and the alkali solution, effectively breaks the fiber bundles, and improves the permeability of the alkali solution. In addition, the elastic net and multiple collision blocks in the collision filtration component are used together to ensure the uniformity of the chemical treatment and avoid the problem of insufficient reaction and low efficiency in the traditional soaking method. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the internal three-dimensional structure of the filtering and separating box of the present invention;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the first crushing assembly and the second crushing assembly of the present invention;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the collision filter assembly of the present invention;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the elastic net of the present invention.

[0024] Description of the numbers in the figure:

[0025] 1. Filtration separation box; 2. First crushing assembly; 3. Second crushing assembly; 4. Collision filtration assembly; 11. Support frame; 12. Material guide frame; 13. Material guide port; 21. First crushing box; 22. Crushing trough; 23. First baffle; 24. Second baffle; 31. Servo motor; 32. Turntable; 33. Slide plate; 34. Slide; 35. Second crushing block; 36. Crushing rod; 41. Separation barrel; 42. Feed baffle; 43. Elastic net; 44. Bracket; 45. Fixed ring; 46. Rotating ring; 47. Agitator rod; 51. Protruding rod; 52. Rotating rod; 53. Sealing cylinder; 54. Transmission pipeline. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0027] Example:

[0028] See also Figure 1-5 , a raw material filtering and separating device for making paper pulp from crop straws, comprising: a filtering and separating box 1, a first crushing component 2, a second crushing component 3 and a collision filtering component 4, a supporting frame 11 is installed at the bottom of the filtering and separating box 1, and a material guide frame 12 is installed at the top of the filtering and separating box 1, a material guide port 13 is provided on the filtering and separating box 1, and the first crushing component 2, the second crushing component 3 and the collision filtering component 4 are installed in the filtering and separating box 1 from top to bottom; the first crushing component 2 comprises a first crushing box 21, a crushing groove 22 matching the material guide port 13 is provided on the first crushing box 21, a crushing motor is fixedly connected to the outer end of the first crushing box 21, a pair of symmetrical crushing rollers are rotatably connected in the first crushing box 21, gears are installed on the pair of crushing rollers, the pair of gears are meshed and connected, the output end of the crushing motor is fixedly connected to one of the crushing rollers, the first crushing component 2 is used to realize the preliminary crushing of the raw material; the second crushing component 3 is used to realize the further crushing of the raw material; the collision filtering component 4 is used to realize the filtering of impurities in the raw material.

[0029] Among them, by introducing a two-stage crushing process, the effect of physical pretreatment is greatly improved. The first crushing component 2 roughly crushes the straw through the crushing motor and the symmetrical crushing rollers, while the second crushing component 3 uses the servo motor 31 and the turntable 32 to further refine the straw fragments. The refinement process greatly increases the surface area of ​​the straw, providing more attack surfaces for the alkali solution, so that the alkali solution can penetrate deeper into the fiber structure and accelerate the chemical reaction rate. At the same time, the built-in dual-axis motor, rotating ring 46 and stirring rod 47 in the collision filtering component 4 realize dynamic stirring, enhance the contact and mixing of the straw and the alkali solution, effectively break the fiber bundles, and improve the permeability of the alkali solution. In addition, the elastic net 43 and multiple collision blocks in the collision filtering component are used in combination to ensure the uniformity of the chemical treatment and avoid the problem of insufficient reaction and low efficiency in the traditional soaking method.

[0030] A first baffle plate 23 and a second baffle plate 24 are installed on the inner wall of the filtering and separating box 1 and located at the lower side of the first crushing box 21 . The first baffle plate 23 and the second baffle plate 24 are arranged in an inclined manner.

[0031] Among them, in the filtering and separation device, the inner wall of the filtering and separation box 1 is installed with a first baffle 23 and a second baffle 24 on the lower side of the first crushing box 21. The two baffles are arranged at an angle, and the inclination angle of the baffle is used to guide and control the flow direction of the crushed straw, ensuring that the material can be effectively moved to the subsequent processing link after passing through the crushing process smoothly, thereby improving the material processing efficiency, reducing the accumulation and blockage of the material during the transmission process, and also helping to distribute the material more evenly, thereby improving the processing capacity and efficiency of the entire system. Through such a design, it can be ensured that the crushed straw can enter the next processing stage in a more suitable state after being guided by the baffle, thereby improving the operating efficiency and processing quality of the entire equipment.

[0032] The second crushing assembly 3 includes a servo motor 31, a turntable 32 is fixedly connected to the output end of the servo motor 31, a slide plate 33 is rotatably connected to the turntable 32, a slide frame 34 is fixedly connected to the inner wall of the filtering and separating box 1, and the slide plate 33 and the slide frame 34 are slidably connected.

[0033] One end of the slide plate 33 is fixedly connected to a second crushing block 35, on which a plurality of evenly distributed crushing rods 36 are mounted. The angle between the ends of the crushing rods 36 close to the second baffle plate 24 and the horizontal line is greater than the angle between the hypotenuse of the second baffle plate 24 and the horizontal line.

[0034] Among them, the design feature of the second crushing component 3 is that it includes a servo motor 31, whose output end is fixedly connected to a turntable 32, on which a slide plate 33 is rotatably connected, and is slidably connected to a slide 34 fixedly connected to the inner wall of the filtering and separating box 1, one end of the slide plate 33 is fixedly connected to a second crushing block 35, and a plurality of evenly distributed crushing rods 36 are installed on the second crushing block 35, and the inclination angle of the end close to the second baffle 24 is greater than the angle between the hypotenuse of the second baffle 24 and the horizontal line. Such an angle setting enhances the guidance and control of the straw during the crushing process, making the crushing more complete and uniform.

[0035] Through the precise control of the servo motor 31, the efficient action of the breaker bar 36 is achieved through the interaction between the turntable 32 and the slide plate 33. The special angle setting of the breaker bar enables the straw to be more effectively captured and crushed when passing through the second baffle 24, which not only improves the fineness of the crushing, but also effectively improves the crushing efficiency by increasing the contact area and impact force with the straw.

[0036] The above-mentioned device greatly improves the efficiency and effect of the crushing process by precisely controlling and optimizing the crushing angle. Reasonable material guidance and crushing design reduce possible blockages and material losses during the processing process. The more detailed crushing results make the straw more uniform and comprehensive when undergoing chemical treatment, thereby improving the quality and output efficiency of the entire pulp.

[0037] The collision filtering assembly 4 includes a separation barrel 41 , which is installed in the filtering and separating box 1 , and is disposed on one side of the second baffle 24 , with a feed baffle 42 fixedly connected to the top of the separation barrel 41 .

[0038] An elastic net 43 is installed in the separation barrel 41, a bracket 44 is fixedly connected to the inner wall of the separation barrel 41, a fixing ring 45 is fixedly connected to the bracket 44, a double-axis motor is installed at the bottom end of the fixing ring 45, a rotating ring 46 is rotatably connected in the fixing ring 45, and the rotating ring 46 and the stirring rod 47 are fixedly connected to the upper and lower output ends of the double-axis motor respectively.

[0039] A protruding rod 51 is fixedly connected to the top of the rotating ring 46, and one end of the protruding rod 51 is rotatably connected to a rotating rod 52. One end of the feed baffle 42 is fixedly connected to a sealing cylinder 53, and a sealing block is slidably connected in the sealing cylinder 53, and the sealing block is rotatably connected to the rotating rod 52.

[0040] One end of the sealing cylinder 53 penetrates through the feed baffle 42 and extends to the outside of the feed baffle 42 to be fixedly connected with a transmission pipeline 54 communicating therewith, and a one-way valve is installed on the transmission pipeline 54 .

[0041] A plurality of evenly distributed impact grooves are provided at the bottom of the separation barrel 41 , and breathable and waterproof membranes are installed in the impact grooves. The transmission pipe 54 is connected to the plurality of impact grooves through a connecting pipe, and a plurality of evenly distributed collision blocks are fixedly connected to the inner wall of the separation barrel 41 .

[0042] Among them, the crushed straw slides into the elastic net 43 set in the separation barrel 41 through the second baffle 24, and the internal dual-axis motor is started and the starting frequency is changed to make it large at first and then small, so as to present a fluctuating form. The starting of the dual-axis motor drives the stirring rod 47 to rotate in this way, and a sodium hydroxide solution is provided in the separation barrel 41. The centrifugal force on the straw inside the elastic net 43 fluctuates. When the centrifugal force is large, the shape of the elastic net 43 also becomes larger and begins to expand, and the straw collides with the inner wall of the separation barrel 41 through the expansion of the elastic net 43. At the same time, a plurality of collision blocks are provided on the inner wall of the separation barrel 41. High-frequency vibration can break the fiber structure and enhance the permeability of the alkali solution, thereby accelerating the chemical reaction process, better destroying the physical structure of the straw, and improving the reaction efficiency. At the same time, the sodium hydroxide solution continues to flow to ensure continuous and uniform chemical action.

[0043] At the same time, the rotation of the upper end of the dual-axis motor drives the rotating ring 46 to rotate, thereby driving the convex rod 51 to rotate, so that it can synchronously drive the sealing block in the sealing cylinder 53 to reciprocate, and cooperate with the one-way valve installed on the transmission pipeline 54, so as to better inject the airflow into the impact groove connected to the connecting pipeline, and then release the airflow through the breathable and waterproof membrane.

[0044] The timing of release here is when the straw in the solution is subjected to a smaller centrifugal force, because when the straw is subjected to a smaller centrifugal force, that is, when the frequency of the dual-axis motor decreases from large to small, the straw will settle. When settling occurs, the airflow release can make it more evenly distributed in the elastic net 43, and then it will be immediately subjected to a larger centrifugal force, that is, when the frequency of the dual-axis motor increases, so as to better cause the straw to collide with the inner wall of the separation barrel 41 and the collision block installed on the inner wall of the separation barrel 41, thereby increasing its speed, so that in an alkaline environment, it can decompose the non-fibrous components such as lignin and wax on the straw, and then take it out through the electric valve installed at the bottom of the separation barrel 41 for subsequent bleaching, washing and filtering.

[0045] The above-mentioned device significantly improves the speed and efficiency of chemical reactions through comprehensive physical stirring and gas-assisted design. At the same time, the uniform treatment and full reaction of straw ensure the quality consistency and purification of pulp. Efficient material handling reduces the consumption of additional energy and chemical reagents, and optimizes the overall performance and finished product quality of chemical treatment while ensuring processing efficiency and reaction rate.

[0046] Working principle:

[0047] First, the first crushing assembly 2 uses the symmetrical crushing roller driven by the crushing motor to roughly crush the straw and open the basic structure of the straw; then, the second crushing assembly 3 further crushes the straw more finely through the turntable 32 controlled by the servo motor 31 and the crushing rod 36 on the slide 33, greatly increasing the surface area of ​​the straw and providing more reaction surfaces for subsequent chemical treatment. Then, the double-axis motor in the collision filter assembly 4 drives the rotating ring 46 and the stirring rod 47 to perform frequency-changing dynamic stirring, and at the same time, the elastic net 43 and the collision block are used to further physically crush the straw to enhance the permeability and reaction efficiency of the alkali solution. In addition, through the design of the sealing cylinder 53 and the transmission pipeline 54, the system injects gas at a critical moment to assist stirring and dispersion to ensure the uniformity of the chemical reaction. Finally, after this series of finely controlled physical and chemical treatments, non-fiber components such as lignin and wax in the straw are efficiently decomposed, optimizing the entire pulp production process and improving the yield and product quality.

[0048] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0049] In addition, it should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that those skilled in the art can understand.

Claims

1. A raw material filtering and separation device for making pulp from crop straw, characterized in that: include: A filter separation box (1), wherein a support frame (11) is installed at the bottom end of the filter separation box (1), and a material guide frame (12) is installed at the top end of the filter separation box (1), a material guide port (13) is opened on the filter separation box (1), and a first crushing component (2), a second crushing component (3) and a collision filter component (4) are installed in the filter separation box (1) in sequence from top to bottom; A first crushing assembly (2), the first crushing assembly (2) comprising a first crushing box (21), the first crushing box (21) being provided with a crushing groove (22) matching the material guide port (13), the outer end of the first crushing box (21) being fixedly connected to a crushing motor, a pair of mutually symmetrical crushing rollers being rotatably connected in the first crushing box (21), the pair of crushing rollers being both provided with gears, the pair of gears being meshingly connected, the output end of the crushing motor being fixedly connected to one of the crushing rollers, and the first crushing assembly (2) being used for achieving preliminary crushing of the raw material; A second crushing assembly (3), wherein the second crushing assembly (3) is used to further crush the raw material; A collision filtering component (4), wherein the collision filtering component (4) is used to filter impurities in raw materials.

2. The raw material filtering and separation device for pulping from crop straw according to claim 1, characterized in that: A first baffle plate (23) and a second baffle plate (24) are installed on the inner wall of the filtering and separating box (1) and located at the lower side of the first crushing box (21); the first baffle plate (23) and the second baffle plate (24) are arranged in an inclined manner.

3. The raw material filtering and separation device for pulping from crop straw according to claim 1, characterized in that: The second crushing assembly (3) comprises a servo motor (31), the output end of the servo motor (31) is fixedly connected to a turntable (32), a slide plate (33) is rotatably connected to the turntable (32), a slide plate (34) is fixedly connected to the inner wall of the filtering and separating box (1), and the slide plate (33) and the slide plate (34) are slidably connected.

4. The raw material filtering and separation device for pulping from crop straw according to claim 3, characterized in that: One end of the slide plate (33) is fixedly connected to a second crushing block (35), and a plurality of evenly distributed crushing rods (36) are mounted on the second crushing block (35), and an angle between one end of the plurality of crushing rods (36) close to the second baffle plate (24) and a horizontal line is greater than an angle between the hypotenuse of the second baffle plate (24) and the horizontal line.

5. The raw material filtering and separation device for pulping from crop straw according to claim 1, characterized in that: The collision filtering assembly (4) comprises a separation barrel (41), the separation barrel (41) is installed in the filtering separation box (1), and the separation barrel (41) is arranged on one side of the second baffle (24), and the top end of the separation barrel (41) is fixedly connected to a feed baffle (42).

6. The raw material filtering and separation device for pulping from crop straw according to claim 5, characterized in that: An elastic net (43) is installed in the separation barrel (41); a bracket (44) is fixedly connected to the inner wall of the separation barrel (41); a fixing ring (45) is fixedly connected to the bracket (44); a double-axis motor is installed at the bottom end of the fixing ring (45); a rotating ring (46) is rotatably connected in the fixing ring (45); and the rotating ring (46) and the stirring rod (47) are fixedly connected to the upper and lower output ends of the double-axis motor respectively.

7. The raw material filtering and separation device for pulping from crop straw according to claim 6, characterized in that: A protruding rod (51) is fixedly connected to the top of the rotating ring (46), one end of the protruding rod (51) is rotatably connected to a rotating rod (52), one end of the feed baffle (42) is fixedly connected to a sealing cylinder (53), a sealing block is slidably connected inside the sealing cylinder (53), and the sealing block is rotatably connected to the rotating rod (52).

8. The raw material filtering and separation device for pulping from crop straw according to claim 7, characterized in that: One end of the sealing cylinder (53) penetrates the feed baffle (42) and extends to the outside of the feed baffle (42) to be fixedly connected to a transmission pipeline (54) communicating therewith, and a one-way valve is installed on the transmission pipeline (54).

9. The raw material filtering and separation device for pulping from crop straw according to claim 8, characterized in that: The bottom end of the separation barrel (41) is provided with a plurality of evenly distributed impact grooves, and a breathable and waterproof membrane is installed in the plurality of impact grooves. The transmission pipeline (54) is connected to the plurality of impact grooves via a connecting pipeline.

10. The raw material filtering and separation device for pulping from crop straw according to claim 5, characterized in that: A plurality of evenly distributed collision blocks are fixedly connected to the inner wall of the separation barrel (41).

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