A pulverizing device for wood pulp production
By designing the crushing and rotating mechanisms of the crushing device, and combining the screening functions of the filter ring and filter holes, the problem of the single function of wood crushing equipment is solved, realizing the automated crushing and screening of wood raw materials and improving the crushing quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 湖北省联丰海外农业开发集团有限责任公司
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-05
AI Technical Summary
Existing wood crushing equipment has limited functionality and cannot consistently screen the size of the crushed wood chips, resulting in poor crushing quality.
A wood pulp production crushing device was designed, which includes a crushing mechanism and a rotating mechanism. The device utilizes a combination of filter rings, crushing wheels, scrapers and grinding strips, and a gear system driven by a rotary motor to achieve automatic crushing and screening of wood. The filter holes in the filter ring screen the wood chips by size.
It has achieved automated crushing and screening of wood raw materials, ensuring that the size of the crushed wood chips meets the requirements and improving the crushing quality.
Smart Images
Figure CN224325618U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crushing device technology, and in particular to a crushing device for wood pulp production. Background Technology
[0002] Wood pulp is paper pulp made from wood. During production, the wood is first chipped, then cooked to soften and dissolve the lignin and other components in the wood chips, thus separating the fibers. Next, impurities are removed by washing, followed by screening to remove unseparated fiber bundles, and finally bleaching to improve the brightness and purity of the wood pulp. Wood pulp is an important raw material for papermaking. Wood pulp produced by different processes has different properties and can meet the production needs of different types of paper.
[0003] In the production and processing of wood pulp, the first step is to use wood bark as fuel, and then separate the cellulose fibers from the wood. The traditional separation method is to use a pulverizer to crush the wood to facilitate subsequent cellulose separation. However, in the existing technology, the wood pulverizing equipment has a relatively simple function and cannot consistently screen the size of the pulverized wood chips, resulting in inconsistent pulverization quality. Therefore, this utility model proposes a pulverizing device for wood pulp production to solve the above problems. Utility Model Content
[0004] To address the aforementioned problems, this utility model proposes a pulverizing device for wood pulp production, which solves the problem that existing wood pulverizing equipment has a relatively simple function and cannot reliably screen the size of the pulverized wood chips, thus resulting in inconsistent pulverizing quality.
[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a crushing device for wood pulp production, including a shell, a front cover, a rear cover, a feed hopper and a discharge pipe. The front end and rear end of the shell are respectively fixedly installed with the front cover and the rear cover. The top of the front cover is connected to the feed hopper. The bottom of the shell is provided with a discharge pipe. The shell is provided with a crushing mechanism inside. The rear end of the shell is provided with a rotating mechanism that matches the crushing mechanism.
[0006] A further improvement is made in that: the crushing mechanism includes a filter ring, filter holes, crushing wheels, scrapers and grinding strips, the filter ring is rotatably connected inside the housing, multiple filter holes are equidistantly arranged on the outer side of the filter ring, crushing wheels are symmetrically rotatably connected on both sides inside the filter ring, scrapers are symmetrically fixedly connected on both sides inside the housing, and multiple grinding strips are equidistantly fixedly connected inside the filter ring.
[0007] A further improvement is that one end of the scraper is fitted and connected to the outer side of the filter ring, and the outer side of the grinding strip meshes with the outer side of the crushing wheel.
[0008] A further improvement is made in that: the rotating mechanism includes a gear ring, a driven gear, a rotating shaft, and a driving gear. A gear ring is fixedly connected to the outer side of the rear end of the filter ring. The back sides of the two crushing wheels pass through the interior of the filter ring through pins and are fixedly connected to two driven gears. A transmission gear meshes between the two driven gears. A rotary motor is fixedly installed at the bottom of the rear cover. The output end of the rotary motor passes through the interior of the rear cover and is fixedly connected to a driving gear through a rotating shaft. The bottom of the driving gear meshes with the inner wall of the gear ring.
[0009] A further improvement is that the outer side of the rotary motor is provided with a protective shell, and multiple anti-collision strips are fixedly connected at equal intervals on the outer side of the protective shell. The anti-collision strips are rectangular in shape.
[0010] A further improvement is that: the two sides of the shell are symmetrically fixedly connected with support feet, the bottom of the support feet are fixedly connected with material support plates, and the top of the material support plates is provided with a water spraying mechanism.
[0011] Further improvements are made in that: the water spraying mechanism includes a spray pipe, nozzles, a water pump and a water pipe. The spray pipe is fixedly installed on the top of the material support plate, and multiple nozzles are installed at equal intervals on the outside of the spray pipe. A water pump is installed at the bottom of the back side of the housing. The output end of the water pump is connected to one end of the spray pipe through a water pipe, and the input end of the water pump is connected to an external water source.
[0012] The beneficial effects of this utility model are as follows: The rotary motor drives the active gear connected to its output end to rotate. The active gear can simultaneously drive the gear ring and the transmission gear to rotate. The transmission gear can drive two driven gears to rotate in the same direction. The two driven gears drive two crushing wheels to rotate in the same direction inside the housing through the pin shaft. The gear ring drives the driven gears to rotate in the opposite direction to the crushing wheels. The crushing teeth on the outer side of the crushing wheel cooperate with the grinding strips on the inner side of the filter ring to automatically shear the wood raw material, thereby automatically crushing the wood raw material. The filter holes inside the filter ring play a screening role for the wood raw material. Wood raw materials that meet the size requirements fall through the filter holes into the inside of the feed pipe and are discharged out through the feed pipe. Larger wood raw materials remain inside the filter ring and continue to be crushed, thereby screening the crushed wood raw materials and ensuring the quality of the crushed wood raw materials. Attached Figure Description
[0013] Figure 1 This is the front view of the present invention;
[0014] Figure 2 This is a side view of the present invention;
[0015] Figure 3 This is a schematic diagram of the crushing mechanism of this utility model;
[0016] Figure 4 This is a schematic diagram of the rotating mechanism structure of this utility model.
[0017] The components are as follows: 1. Shell; 2. Front cover; 3. Rear cover; 4. Feed hopper; 5. Feed pipe; 6. Filter ring; 7. Filter hole; 8. Crushing wheel; 9. Scraper; 10. Gear ring; 11. Driven gear; 12. Rotating shaft; 13. Drive gear; 14. Rotary motor; 15. Material support plate; 16. Spray pipe; 17. Spray head; 18. Water pump; 19. Water pipe; 20. Grinding strip; 21. Transmission gear. Detailed Implementation
[0018] To enhance understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are for illustrative purposes only and do not constitute a limitation on the scope of protection of this utility model.
[0019] according to Figure 1 , 2 As shown in Figures 3 and 4, this embodiment proposes a pulverizing device for wood pulp production, including a housing 1, a front cover 2, a rear cover 3, a feed hopper 4, and a discharge pipe 5. The front cover 2 and the rear cover 3 are fixedly installed at the front and rear ends of the housing 1, respectively. The top of the front cover 2 is connected to the feed hopper 4, and the bottom of the housing 1 is provided with the discharge pipe 5. A pulverizing mechanism is provided inside the housing 1, and a rotating mechanism matching the pulverizing mechanism is provided at the rear end of the housing 1. Wood raw materials are fed into the housing 1 through the feed hopper 4, so that the wood raw materials enter the pulverizing mechanism. The rotating mechanism can drive the pulverizing mechanism to rotate, and the pulverizing mechanism automatically pulverizes the wood raw materials. The pulverizing mechanism also has a built-in screening function, which avoids the problem that the function of wood pulverizing equipment is relatively simple and cannot stably screen the size of the pulverized wood chips, thus resulting in the problem that the pulverizing quality is not guaranteed. The pulverized wood raw materials are discharged out through the discharge pipe 5.
[0020] The rotating mechanism includes a gear ring 10, driven gears 11, a rotating shaft 12, and a driving gear 13. The gear ring 10 is fixedly connected to the outer side of the rear end of the filter ring 6. The back sides of the two crushing wheels 8 pass through the interior of the filter ring 6 through pins and are fixedly connected to two driven gears 11. A transmission gear 21 meshes between the two driven gears 11. A rotary motor 14 is fixedly installed at the bottom of the rear cover 3. The output end of the rotary motor 14 passes through the interior of the rear cover 3 and is fixedly connected to the driving gear 13 through the rotating shaft 12. The bottom of the driving gear 13 meshes with the inner wall of the gear ring 10. The rotary motor 14 drives the driving gear 13 connected to its output end to rotate. The driving gear 13 can simultaneously drive the gear ring 10 and the transmission gear 21 to rotate. The transmission gear 21 can drive the two driven gears 11 to rotate in the same direction. The two driven gears 11 drive the two crushing wheels 8 to rotate in the same direction inside the housing 1 through pins. The gear ring 10 drives the driven gears 11 to rotate in the opposite direction to the crushing wheels 8.
[0021] The crushing mechanism includes a filter ring 6, filter holes 7, crushing wheels 8, scrapers 9, and grinding strips 20. The filter ring 6 is rotatably connected inside the housing 1. Multiple filter holes 7 are equidistantly arranged on the outer side of the filter ring 6. The crushing wheels 8 are symmetrically rotatably connected to both sides inside the filter ring 6. The scrapers 9 are symmetrically fixedly connected to both sides inside the housing 1. Multiple grinding strips 20 are equidistantly fixedly connected to the inside of the filter ring 6. One end of the scraper 9 is attached to the outer side of the filter ring 6, and the outer side of the grinding strips 20 meshes with the outer side of the crushing wheels 8.
[0022] The crushing teeth on the outer side of the crushing wheel 8 cooperate with the grinding strips 20 on the inner side of the filter ring 6 to automatically shear the wood raw material, thereby automatically crushing the wood raw material. The filter holes 7 inside the filter ring 6 also play a screening role for the wood raw material. Wood raw materials that meet the size requirements fall through the filter holes 7 into the inside of the feed pipe 5 and are discharged out through the feed pipe 5. Larger wood raw materials remain inside the filter ring 6 and continue to be crushed, ensuring the quality of the crushed wood raw material.
[0023] The rotary motor 14 is provided with a protective shell on its outer side. Multiple anti-collision strips are fixedly connected at equal intervals on the outer side of the protective shell. The anti-collision strips are rectangular in shape. The protective shell and anti-collision strips can isolate the rotary motor 14 from external objects, prevent external objects from directly contacting the rotary motor 14, and play a protective role for the rotary motor 14.
[0024] Support legs are symmetrically fixedly connected to both sides of the housing 1. A material support plate 15 is fixedly connected to the bottom of each support leg. A water spraying mechanism is provided on the top of the material support plate 15. The water spraying mechanism includes a spray pipe 16, nozzles 17, a water pump 18, and a water pipe 19. The spray pipe 16 is fixedly installed on the top of the material support plate 15. Multiple nozzles 17 are equidistantly installed on the outer side of the spray pipe 16. A water pump 18 is installed at the bottom of the back side of the housing 1. The output end of the water pump 18 is connected to one end of the spray pipe 16 through the water pipe 19. The input end is connected to an external water source. The crushed wood raw material falls through the feed pipe 5 to the top of the support plate 15, and then flows downward through the inclined angle of the support plate 15 to the pulping tank of the next stage. The water pump 18 and the water pipe 19 work together to transport external water to the spray pipe 16. The spray pipe 16 sprays water to the top of the support plate 15 through the nozzle 17. The impact force of the water flow provides assistance for the crushed wood raw material to move from the support plate 15 to the pulping tank, ensuring the efficiency of feeding into the pulping tank and supplying it with water.
[0025] This wood pulp production crushing device uses a rotary motor 14 to drive a drive gear 13 connected to its output end. The drive gear 13 can simultaneously drive a gear ring 10 and a transmission gear 21 to rotate. The transmission gear 21 can drive two driven gears 11 to rotate in the same direction. The two driven gears 11 drive two crushing wheels 8 to rotate in the same direction inside the housing 1 via a pin. The gear ring 10 drives the driven gears 11 to rotate in the opposite direction to the crushing wheels 8. The crushing teeth on the outer side of the crushing wheels 8 cooperate with the grinding strips 20 on the inner side of the filter ring 6 to automatically shear the wood raw materials, thereby automatically crushing the wood raw materials. The filter holes 7 inside the filter ring 6 also serve to screen the wood raw materials. Wood raw materials that meet the size requirements fall through the filter holes 7 into the inside of the feed pipe 5 and are discharged out through the feed pipe 5. Larger wood raw materials remain inside the filter ring 6 and continue to be crushed, ensuring the quality of the crushed wood raw materials.
[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A crushing device for wood pulp production, comprising a shell (1), a front cover (2), a rear cover (3), a feed hopper (4), and a discharge pipe (5), characterized in that: The front end and rear end of the housing (1) are respectively fixedly installed with a front cover (2) and a rear cover (3). The top of the front cover (2) is connected to a feed hopper (4). The bottom of the housing (1) is provided with a discharge pipe (5). The inside of the housing (1) is provided with a crushing mechanism. The rear end of the housing (1) is provided with a rotating mechanism that matches the crushing mechanism. The crushing mechanism includes a filter ring (6), filter holes (7), crushing wheel (8), scraper (9) and grinding strips (20). The filter ring (6) is rotatably connected inside the housing (1). Multiple filter holes (7) are provided at equal intervals on the outer side of the filter ring (6). The crushing wheel (8) is symmetrically rotatably connected on both sides inside the filter ring (6). The scraper (9) is symmetrically fixedly connected on both sides inside the housing (1). Multiple grinding strips (20) are fixedly connected at equal intervals inside the filter ring (6).
2. The pulverizing device for wood pulp production according to claim 1, characterized in that: One end of the scraper (9) is attached to the outer side of the filter ring (6), and the outer side of the grinding strip (20) meshes with the outer side of the crushing wheel (8).
3. The pulverizing device for wood pulp production according to claim 1, characterized in that: The rotating mechanism includes a gear ring (10), a driven gear (11), a rotating shaft (12), and a driving gear (13). The gear ring (10) is fixedly connected to the outer side of the rear end of the filter ring (6). The back sides of the two crushing wheels (8) pass through the interior of the filter ring (6) through pins and are fixedly connected to two driven gears (11). A transmission gear (21) meshes between the two driven gears (11). A rotary motor (14) is fixedly installed at the bottom of the rear cover (3). The output end of the rotary motor (14) passes through the interior of the rear cover (3) and is fixedly connected to the driving gear (13) through the rotating shaft (12). The bottom of the driving gear (13) meshes with the inner wall of the gear ring (10).
4. A pulverizing device for wood pulp production according to claim 3, characterized in that: The rotary motor (14) is provided with a protective shell on its outer side. Multiple anti-collision strips are fixedly connected at equal intervals on the outer side of the protective shell. The anti-collision strips are rectangular in shape.
5. A pulverizing device for wood pulp production according to claim 1, characterized in that: The shell (1) is symmetrically fixedly connected to two sides with support feet, and a material support plate (15) is fixedly connected to the bottom of the support feet. A water spraying mechanism is provided on the top of the material support plate (15).
6. A pulverizing device for wood pulp production according to claim 5, characterized in that: The water spraying mechanism includes a spray pipe (16), a nozzle (17), a water pump (18), and a water pipe (19). The spray pipe (16) is fixedly installed on the top of the material support plate (15). Multiple nozzles (17) are installed at equal intervals on the outside of the spray pipe (16). The water pump (18) is installed at the bottom of the back side of the housing (1). The output end of the water pump (18) is connected to one end of the spray pipe (16) through the water pipe (19). The input end of the water pump (18) is connected to an external water source.