Double-helix shoving device

Abstract

The utility model relates to a double-screw shoving device, and belongs to the field of slurry treatment, the double-screw shoving device comprises a machine body, a shoving mechanism is arranged on the inner wall of the machine body, a washing mechanism is arranged on the left side of the machine body, and the shoving mechanism comprises a separation box, two screw rods, two screw blades, a gear box, a main gear, an auxiliary gear and a driving motor. According to the double-helix shoving device, by adopting a double-helix structure, more efficient defibering, washing and dewatering treatment on pulp can be achieved, the forced directional squeezing and conveying functions of the double-helix working screw rod are achieved, fibers are twisted, cracks are generated on the fiber walls, the defibering effect is remarkably improved, and meanwhile the size of the pulp is reduced. The application of the high-efficiency filter realizes high-efficiency replacement and washing while grinding materials, saves water and reduces sewage discharge, and on the whole, the technology improves the slurry treatment efficiency and quality, reduces energy consumption and environmental pollution, and has remarkable economic and social benefits.

Description

Technical Field

[0001] The present application relates to the technical field of pulp processing, and in particular to a double-screw pulp squeezing device. Background Art

[0002] The screw press is a pulping device used for dehydrating pulp. It can effectively process pulp of various feed concentrations. In the field of pulp processing technology, traditional pulping and dehydration equipment often has problems such as low processing efficiency, high energy consumption, and unsatisfactory washing effect. Therefore, the development of a device that can efficiently dehydrate, wash and dehydrate pulp has become an urgent need in the industry.

[0003] For example, a single screw pulping machine disclosed in Chinese patent announcement number (CN219564228U) provides power to an extrusion dehydration device through a driving device to operate the extrusion dehydration device, and then puts the material into the extrusion dehydration device, and the extrusion dehydration device cooperates with a dryness adjustment mechanism to extrude and dehydrate the material, thereby improving the practicality of the equipment; it includes a driving device; it also includes an extrusion dehydration device and a dryness adjustment mechanism, and the driving device and the dryness adjustment mechanism are both installed on the extrusion dehydration device; the driving device provides power to the extrusion dehydration device, and the extrusion dehydration device cooperates with the dryness adjustment mechanism to extrude and dehydrate the material.

[0004] However, the prior art such as the above-mentioned patent publication still has the problem of poor efficiency in pulp decomposition and washing. In the prior art, pulp decomposition and dehydration are achieved by rotating and squeezing a screw rod. However, these devices often have difficulty in fully kneading the pulp during the processing process, resulting in poor fiber decomposition effect and limited washing efficiency. Utility Model Content

[0005] In response to the shortcomings of the prior art, the present application provides a double-screw pulping device, which has the advantages of more efficient debonding, washing and dehydration effects, and solves the problem that the traditional single-screw pulping device has obvious deficiencies in debonding effect and washing efficiency and cannot meet the needs of efficient, energy-saving and environmentally friendly pulp processing.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a double-screw pulping device, comprising a body, an inner wall of the body is provided with a pulping mechanism, and a washing mechanism is provided on the left side of the body;

[0007] The pulping mechanism includes a separation box, two screw rods, two spiral blades, a gear box, a main gear, a sub-gear and a driving motor. The separation box is horizontally fixed to the inner wall of the machine body. The two screw rods are rotatably connected to the inner wall of the separation box through bearings. The two spiral blades are respectively fixed to the outer sides of the two screw rods. The gear box is fixed to the right side of the machine body. The right ends of the two screw rods pass through and extend into the interior of the gear box and are respectively fixed to the main gear and the sub-gear. The main gear and the sub-gear are meshed and connected. The driving motor is fixed to the right side of the gear box, and the outer side of the output shaft of the driving motor is fixed to the rear screw rod.

[0008] By adopting this technical solution, the slurry decomposition and dehydration efficiency is improved through the coordinated work of two spiral rods.

[0009] Furthermore, a feed port is provided on the left side of the separation box, and a controller is fixed on the outside of the machine body.

[0010] By adopting this technical solution, convenient feeding of slurry and centralized control of equipment are achieved.

[0011] Furthermore, the lower surface of the machine body is connected to a slurry discharge pipe, a discharge port is provided on the right side of the lower surface of the separation box, and a lower hopper is fixed to the inner wall of the discharge port.

[0012] By adopting this technical solution, smooth discharge and collection of slurry is achieved, improving the continuity and efficiency of the production process.

[0013] Furthermore, the two spiral rods are located in the same horizontal plane.

[0014] By adopting this technical solution, the uniformity and consistency of the pulping process are ensured, thereby improving the dehydration and decomposition effects.

[0015] Furthermore, the washing mechanism includes a feed box, a fine filter frame, a coarse filter frame, a flushing pipe, a flushing nozzle and a circulation part. The feed box is fixed to the left side of the machine body, the fine filter frame is fixed to the inner wall of the feed box, the coarse filter frame is fixed to the inner wall of the fine filter frame, the flushing pipe is horizontally fixed between the left and right inner walls of the coarse filter frame, the flushing nozzle is connected to the outside of the flushing pipe, and the circulation part is arranged on the inner wall of the feed box to circulate backwashing water.

[0016] By adopting this technical solution, the washing efficiency and washing quality are improved through multi-stage filtering and flushing.

[0017] Furthermore, the circulation component includes a fairing, a downpipe, a water pump, a tee, a clean water pipe, a return pipe and a circulation pipe. The fairing is horizontally fixed on the inner wall of the feed box, the downpipe is connected to the bottom end of the fairing, the water pump is fixed to the left side of the feed box, the tee is connected to the water inlet end of the water pump, and the other two ends of the tee are respectively connected to the clean water pipe and the return pipe, the bottom end of the return pipe is connected to the outside of the fairing, one end of the circulation pipe is connected to the water outlet end of the water pump, and the other end of the circulation pipe is connected to the outside of the flushing pipe.

[0018] By adopting this technical solution, the recycling of washing water is achieved, water resources are saved and sewage discharge is reduced, which is of environmental significance.

[0019] Furthermore, a discharge port is provided on the right side of the fine filter frame and the coarse filter frame, and two spiral rods penetrate the discharge port and extend to the inside of the fine filter frame.

[0020] The adoption of this technical solution helps to more effectively promote the discharge of the washed slurry, thereby improving the discharge efficiency of the washing mechanism.

[0021] Furthermore, the number of the flushing nozzles is no less than two, and they are evenly distributed on the front and back sides of the flushing pipe.

[0022] By adopting this technical solution, the comprehensiveness and uniformity of the washing process are ensured, and the washing effect is improved.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] 1. The double-helix pulping device adopts a double-helix structure, which can achieve more efficient pulp decomposition, washing and dehydration. The forced directional extrusion and conveying effect of the double-helix working screw causes the fibers to twist and cracks to form in the fiber wall, which significantly improves the decomposition effect. At the same time, the application of high-efficiency filters realizes efficient replacement washing while grinding the material, saving water and reducing sewage discharge. Overall, this technology improves pulp processing efficiency and quality, reduces energy consumption and environmental pollution, and has significant economic and social benefits.

[0025] 2. The double-helix slurry extrusion device achieves fiber twisting and cracking through forced directional extrusion and delivery of slurry, thereby improving the delamination effect. The high-efficiency filter is installed at the feeding end of the double-helix working screw to perform efficient replacement washing while grinding the material. Through high extrusion force and rubbing action, high-efficiency washing is achieved, water is saved and sewage discharge is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of this application;

[0027] Figure 2 This is a schematic diagram of the pulp squeezing mechanism for this application;

[0028] Figure 3 This is a partial top view of the pulp squeezing mechanism of this application;

[0029] Figure 4 This is a schematic diagram of the washing mechanism for this application;

[0030] Figure 5 This is a partial schematic diagram of the washing mechanism of this application.

[0031] In the figure: 1. body; 2. slurry squeezing mechanism; 21. separation box; 22. screw rod; 23. spiral blade; 24. gear box; 25. main gear; 26. sub-gear; 27. drive motor; 28. slurry discharge pipe; 29. ​​lower hopper; 3. washing mechanism; 31. feed box; 32. fine filter frame; 33. coarse filter frame; 34. flushing pipe; 35. flushing nozzle; 36. circulation part; 361. guide cover; 362. sewer pipe; 363. water pump; 364. three-way pipe; 365. clean water pipe; 366. return pipe; 367. circulation pipe. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] See also Figure 1 A double-screw pulping device in this embodiment includes a body 1, an inner wall of the body 1 is provided with a pulping mechanism 2, and a washing mechanism 3 is provided on the left side of the body 1.

[0034] See also Figures 2 to 3In order to filter and wash the slurry, the slurry squeezing mechanism 2 in this embodiment includes a separation box 21, two screw rods 22, two spiral blades 23, a gear box 24, a main gear 25, a sub-gear 26 and a driving motor 27. The separation box 21 is horizontally fixed to the inner wall of the body 1, and the two screw rods 22 are rotatably connected to the inner wall of the separation box 21 through bearings. The slurry is first washed and filtered in the washing mechanism 3 to remove impurities and improve the cleanliness of the slurry. The washed slurry enters the separation box 21 of the slurry squeezing mechanism 2. The two spiral blades 23 are respectively fixed to the outer sides of the two screw rods 22. 1, the spiral blades 23 on the spiral rod 22 transport the slurry forward, and the slurry is further dehydrated by the squeezing action of the spiral blades 23. The gear box 24 is fixed to the right side of the machine body 1. The right ends of the two spiral rods 22 penetrate and extend into the interior of the gear box 24 and are respectively fixed to the main gear 25 and the sub-gear 26. The main gear 25 and the sub-gear 26 are meshed and connected. The driving motor 27 is fixed to the right side of the gear box 24, and the outer side of the output shaft of the driving motor 27 is fixed to the rear spiral rod 22. The driving motor 27 transmits power through the main gear 25 and the sub-gear 26 in the gear box 24 to drive the spiral rod 22 to rotate.

[0035] In this embodiment, a feed port is provided on the left side of the separation box 21, a controller is fixed on the outside of the machine body 1, a slurry discharge pipe 28 is connected to the lower surface of the machine body 1, a discharge port is provided on the right side of the lower surface of the separation box 21, and a lower hopper 29 is fixed on the inner wall of the discharge port, and two screw rods 22 are located in the same horizontal plane, wherein the slurry discharged by squeezing is guided and discharged by the slurry discharge pipe 28, and the slurry processed by the squeezing mechanism 2 is discharged through the discharge port and collected or further processed through the lower hopper 29.

[0036] See also Figures 4 to 5 In order to use the slurry for double-screw extrusion, the washing mechanism 3 in this embodiment includes a feed box 31, a fine filter frame 32, a coarse filter frame 33, a flushing pipe 34, a flushing nozzle 35 and a circulation part 36. The feed box 31 is fixed to the left side of the body 1, and the fine filter frame 32 is fixed to the inner wall of the feed box 31. The slurry passing through the coarse filter frame 33 continues to be further filtered through the fine filter frame 32 to ensure a finer washing effect. The coarse filter frame 33 is fixed to the inner wall of the fine filter frame 32. The slurry first enters the feed box 31 of the washing mechanism 3 and is ready to be washed. The slurry is preliminarily filtered through the coarse filter frame 33 in the feed box 31 to remove larger impurities and particles. The flushing pipe 34 is horizontally fixed between the left and right inner walls of the coarse filter frame 33. The flushing nozzle 35 is connected to the outer side of the flushing pipe 34. The circulation part 36 is arranged on the inner wall of the feed box 31 to circulate backwashing water.

[0037] The circulation member 36 includes a flow deflector 361, a downpipe 362, a water pump 363, a tee pipe 364, a clean water pipe 365, a return pipe 366 and a circulation pipe 367. The flow deflector 361 is horizontally fixed to the inner wall of the feed box 31, the downpipe 362 is connected to the bottom end of the flow deflector 361, the water pump 363 is fixed to the left side of the feed box 31, the tee pipe 364 is connected to the water inlet end of the water pump 363, and the other two ends of the tee pipe 364 are respectively connected to the clean water pipe 365 and the return pipe 366. The bottom end of the return pipe 366 is connected to the outside of the downpipe 362, one end of the circulation pipe 367 is connected to the water outlet end of the water pump 363, and the other end of the circulation pipe 367 is connected to the outside of the flushing pipe 34. The water pump 363 in the circulation part 36 distributes the flushing water through the three-way pipe 364, and part of the water flows back to the feed box 31 through the return pipe 366, forming a circulating washing system, improving the washing efficiency and saving water. The washed slurry is brought into the slurry squeezing mechanism 2 through the movement of the double screw rod 22.

[0038] In this embodiment, discharge ports are provided on the right sides of the fine filter frame 32 and the coarse filter frame 33, and the two spiral rods 22 pass through the discharge ports and extend to the interior of the fine filter frame 32. In the coarse filter frame 33, the flushing nozzle 35 on the flushing pipe 34 sprays flushing water to thoroughly flush the slurry to remove fine impurities. The number of the flushing nozzles 35 is not less than two, and they are evenly distributed on the front and back sides of the flushing pipe 34.

[0039] The working principle of the above embodiment is:

[0040] (1) When the slurry is filtered and washed, the slurry first enters the feed box 31 of the washing mechanism 3 to prepare for washing. The slurry is initially filtered through the coarse filter frame 33 in the feed box 31 to remove larger impurities and particles. The slurry that has passed the coarse filter frame 33 continues to be further filtered through the fine filter frame 32 to ensure a finer washing effect. In the coarse filter frame 33, the flushing nozzle 35 on the flushing pipe 34 sprays flushing water to thoroughly flush the slurry to remove fine impurities. The water pump 363 in the circulation part 36 distributes the flushing water through the tee pipe 364, and part of the water flows back to the feed box 31 through the return pipe 366, forming a circulating washing system to improve washing efficiency and save water. The washed slurry is brought into the slurry squeezing mechanism 2 through the movement of the double screw rod 22.

[0041] (2) When the slurry is subjected to double-screw extrusion, the slurry is first washed and filtered in the washing mechanism 3 to remove impurities and improve the cleanliness of the slurry. The washed slurry enters the separation box 21 of the extrusion mechanism 2. In the separation box 21, the spiral blades 23 on the screw rod 22 convey the slurry forward and further dehydrate it through the squeezing action of the spiral blades 23. The driving motor 27 transmits power through the main gear 25 and the sub-gear 26 in the gear box 24 to drive the screw rod 22 to rotate. The slurry discharged by the extrusion is discharged through the slurry discharge pipe 28. The slurry processed by the extrusion mechanism 2 is discharged through the discharge port and collected or further processed through the lower hopper 29.

Claims

1. A double-screw pulping device, comprising a body (1), characterized in that: The inner wall of the machine body (1) is provided with a pulp squeezing mechanism (2), and the left side of the machine body (1) is provided with a washing mechanism (3); The pulp squeezing mechanism (2) comprises a separation box (21), two screw rods (22), two screw blades (23), a gear box (24), a main gear (25), a sub-gear (26) and a driving motor (27); the separation box (21) is horizontally fixed to the inner wall of the machine body (1); the two screw rods (22) are rotatably connected to the inner wall of the separation box (21) via bearings; the two screw blades (23) are respectively fixed to the outer sides of the two screw rods (22); the gear box (24) is fixed to the right side of the machine body (1); the right ends of the two screw rods (22) penetrate and extend into the interior of the gear box (24) and are respectively fixed to the main gear (25) and the sub-gear (26); the main gear (25) and the sub-gear (26) are meshingly connected; the driving motor (27) is fixed to the right side of the gear box (24); and the outer side of the output shaft of the driving motor (27) is fixed to the rear screw rod (22).

2. A double-screw pulping device according to claim 1, characterized in that: A feed inlet is provided on the left side of the separation box (21), and a controller is fixed on the outside of the machine body (1).

3. A double-screw pulping device according to claim 1, characterized in that: The lower surface of the machine body (1) is connected to a slurry discharge pipe (28), the right side of the lower surface of the separation box (21) is provided with a discharge port, and a lower hopper (29) is fixed to the inner wall of the discharge port.

4. A double-screw pulping device according to claim 1, characterized in that: The two spiral rods (22) are located on the same horizontal plane.

5. A double-screw pulping device according to claim 1, characterized in that: The washing mechanism (3) comprises a feed box (31), a fine filter frame (32), a coarse filter frame (33), a flushing pipe (34), a flushing nozzle (35) and a circulation member (36); the feed box (31) is fixed to the left side of the machine body (1); the fine filter frame (32) is fixed to the inner wall of the feed box (31); the coarse filter frame (33) is fixed to the inner wall of the fine filter frame (32); the flushing pipe (34) is horizontally fixed between the left and right inner walls of the coarse filter frame (33); the flushing nozzle (35) is connected to the outer side of the flushing pipe (34); and the circulation member (36) is arranged on the inner wall of the feed box (31) to circulate backwashing water.

6. A double-screw pulp squeezing device according to claim 5, characterized in that: The circulation member (36) comprises a flow deflector (361), a downpipe (362), a water pump (363), a three-way pipe (364), a clean water pipe (365), a return pipe (366) and a circulation pipe (367); the flow deflector (361) is horizontally fixed to the inner wall of the feed box (31); the downpipe (362) is connected to the bottom end of the flow deflector (361); the water pump (363) is fixed to the left side of the feed box (31); The three-way pipe (364) is connected to the water inlet end of the water pump (363), and the other two ends of the three-way pipe (364) are respectively connected to the clean water pipe (365) and the return pipe (366), the bottom end of the return pipe (366) is connected to the outside of the downpipe (362), one end of the circulation pipe (367) is connected to the water outlet end of the water pump (363), and the other end of the circulation pipe (367) is connected to the outside of the flushing pipe (34).

7. A double-screw pulp squeezing device according to claim 5, characterized in that: The right sides of the fine filter frame (32) and the coarse filter frame (33) are both provided with discharge ports, and the two spiral rods (22) penetrate the discharge ports and extend into the interior of the fine filter frame (32).

8. A double-screw pulping device according to claim 5, characterized in that: The number of the flushing nozzles (35) is no less than two, and they are evenly distributed on the front and rear sides of the flushing pipe (34).

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