Hydraulic pulper and discharge

Abstract

The application discloses a hydraulic pulping and residue discharging machine and belongs to the technical field of papermaking and pulping equipment. The machine comprises a pulping machine shell which is internally provided with a cavity structure and is provided with a feeding port at the upper end; a residue discharging mechanism which comprises a residue scraping plate arranged at the bottom of the cavity of the pulping machine shell and used for cleaning the waste residue after pulping; a pulping and screening component which comprises a pulping cutter arranged in the pulping machine shell and a paper pulp screen plate matched with the pulping cutter and used for the disintegration and screening of raw materials; a good pulp collecting chamber with a pulp discharging pipeline formed by the screen plate and used for collecting the good pulp slurry passing through the screen plate; the good pulp collecting chamber is arranged below the pulping cutter on the pulping machine shell; and the bottom of the residue scraping plate is provided with a residue discharging port. The residue scraping plate sweeps the whole residue collecting chamber along the bottom of the shell, and the waste residue is uniformly pushed to the residue collecting groove and discharged through the residue discharging port, so that the accumulated residue can be discharged without manual cleaning, and the production capacity of the equipment is greatly improved.

Description

Technical Field

[0001] This invention belongs to the technical field of papermaking and pulping equipment, specifically a hydraulic pulping and slag discharge machine. Background Technology

[0002] Hydraulic pulpers are core equipment in waste paper recycling pulping processes. They primarily rely on hydraulic shearing and mechanical crushing to break down waste paper, cardboard, and other raw materials into fibrous pulp, while simultaneously separating heavy impurities such as plastics and silt. They are widely used in the production of recycled paper and packaging paper. Currently, conventional hydraulic pulpers on the market generally suffer from several production pain points, making it difficult to adapt to the demands of continuous, high-cleanliness, and low-energy-consumption modern pulping production lines.

[0003] Existing traditional pulpers have a simple pulping structure and do not fully utilize the circumferential low-speed enrichment zone formed around the rotating pulping disc to design an efficient slag removal system. The biggest problem is that if slag removal is intermittent, manual entry into the pulper casing is required to clean the waste, or a special rake is needed for cleaning, which is dangerous, unregulated, and extremely inefficient. If slag removal is continuous, auxiliary equipment such as rope stirrers, hydraulic impurity removers, and cylindrical screens are required, which not only makes the system complex and cumbersome to operate, but also often results in a large amount of unresolved particles in the slag, causing fiber loss. Recovering this fiber often requires adding an energy-intensive mechanical slag separator, which leads to excessive crushing of impurities in the pulp, making the system even more complex, increasing energy consumption, cumbersome operation, requiring continuous manual monitoring, and requiring a large system footprint. Summary of the Invention

[0004] The purpose of this invention is to provide a hydraulic pulping and slag discharge machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic slurry discharge machine, comprising:

[0006] The pulper housing has a hollow internal structure, and a feed inlet is provided at the upper end of the pulper housing;

[0007] The slag removal mechanism includes at least one set of scraper plates arranged at the bottom of the cavity inside the pulper housing and a slag removal port cooperating with the scraper plates, for cleaning and discharging waste slag after pulping;

[0008] The pulping and screening components include a pulping cutter disc arranged inside the pulper housing and a pulp screen plate that cooperates with the pulping cutter disc for pulping and screening raw materials;

[0009] The good pulp collection chamber, which is formed by the screen plate and has a pulp outlet pipe, is used to collect the good pulp liquid that passes through the screen plate; the good pulp collection chamber is arranged on the pulper housing below the pulping cutter head.

[0010] As a further preferred embodiment of this technical solution, the slag discharge mechanism also includes:

[0011] The slag collection trough is located at the bottom of the pulper housing, surrounding the pulping cutter head and communicating with the cavity structure of the pulper housing, and is used to collect waste residue.

[0012] As a further preferred embodiment of this technical solution, the slag discharge mechanism also includes:

[0013] The connecting rod is slidably connected to the bottom of the pulper housing and is used to drive the scraper plate to rotate. The scraper plate is fixedly installed at one end of the connecting rod.

[0014] The hollow shaft is rotatably connected to the bottom of the pulper housing via bearings, and is used to drive the connecting rods to rotate. The connecting rods are respectively fixed to the upper end of the hollow shaft.

[0015] The hollow shaft is sleeved on the outside of the first transmission shaft;

[0016] Pulley 1 is installed at the bottom of the hollow shaft and is used to drive the hollow shaft to rotate.

[0017] As a further preferred embodiment of this technical solution, the slag discharge mechanism also includes:

[0018] The filter plate, installed at the bottom of the scraper plate, is used to filter moisture from the waste residue; the water collection chamber with an outlet is located below the filter plate.

[0019] As a further preferred embodiment of this technical solution, the slag discharge mechanism also includes:

[0020] The water inlet pipe is located at the bottom of the pulper casing and is used for water injection and washing of the slag before discharge.

[0021] The slag washing water pipe is installed on the side of the pulper housing away from the slag discharge port and is used to discharge the slag washing water.

[0022] As a further preferred embodiment of this technical solution: the direction of the water outlet of the water inlet pipe corresponds to that of the slag scraper, and is used to assist the rotation of the slag scraper by the hydraulic force of the incoming water.

[0023] As a further preferred embodiment of this technical solution, the pulping and screening component also includes:

[0024] Drive shaft one is rotatably connected through the bottom of the pulper housing to drive the pulping cutter disc to rotate, and the pulping cutter disc is fixed to the upper end of drive shaft one;

[0025] The second pulley is installed at the lower end of the first drive shaft and is used to drive the first drive shaft to rotate.

[0026] As a further preferred embodiment of this technical solution: at least one set of reinforced pulping cutter discs is provided in the middle of the pulper housing; the drive shaft of the reinforced pulping cutter discs is rotatably connected to the pulper housing and is used to drive the reinforced pulping cutter discs to rotate;

[0027] Pulley three is installed at the other end of drive shaft two and is used to drive drive shaft two to rotate.

[0028] As a further preferred embodiment of this technical solution: the at least one set of reinforced pulping cutter discs is also provided with a pulp screen plate that cooperates with the reinforced pulping cutter discs; a good pulp collection chamber with a pulp outlet is formed with the screen plate to collect the good pulp liquid that has passed through the screen plate.

[0029] As a further preferred embodiment of this technical solution: the pulping screen plate is a microporous or microslit screen plate.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] 1. In this invention, by integrating pulping, screening, and automatic scraping and slag removal functions into one unit, there is no need for additional auxiliary equipment such as rope stirring machine, hydraulic impurity removal machine, and slag separator, which reduces energy consumption, prevents excessive damage to impurities in tailings, improves the cleanliness of pulp, simplifies the production line layout, reduces equipment footprint, and lowers the equipment investment and operation and maintenance costs of the entire pulping system.

[0032] 2. In this invention, the slag scraper is used in conjunction with the slag collection trough to achieve automatic slag sweeping and discharge throughout the entire area. There is no need for manual entry into the pulper housing to clean the accumulated slag, avoiding the high-risk operation of manual slag cleaning and greatly improving the efficiency of continuous production. At the same time, the filter plate and water inlet pipe work together to wash and dewater the slag, recover the fiber and white water entrained in the waste slag, effectively reduce fiber loss and improve the utilization rate of raw materials.

[0033] 3. In addition, the multi-directional pulping structure, with a bottom pulping disc and reinforced pulping discs on both sides, eliminates pulping dead zones and ensures more thorough waste paper disintegration. Fine screening through microporous sieves results in higher quality pulp that meets the requirements for ordinary papermaking, greatly simplifying the process, significantly reducing energy consumption per ton of pulp, and significantly reducing the content of various fragile adhesives in waste paper pulp, thus reducing obstacles in papermaking. The pulping mechanism and scraping mechanism are driven by independent pulleys, and their speeds can be adjusted separately, adapting to different waste paper raw materials and different production capacity conditions. This enhances the equipment's versatility and adaptability, resulting in lower overall energy consumption. Attached Figure Description

[0034] Figure 1 This is a cross-sectional view of the structure of a hydraulic pulping and slag removal machine according to the present invention.

[0035] Legend: 1. Pulper housing; 11. Feed inlet;

[0036] Slag discharge mechanism: 201, slag collection trough; 202, slag scraper; 203, filter plate; 204, scraper connecting rod; 205, hollow shaft; 206, pulley one; 207, slag discharge port; 208, water inlet pipe; 209, slag washing water pipe;

[0037] Main pulping components: 301, pulping cutter head; 302, drive shaft one; 303, pulley two; 304, good pulp collection chamber; 305, pulp outlet pipe;

[0038] Reinforced pulping components: 401, reinforced pulping cutter disc; 402, drive shaft two; 403, pulley three; 404, side pulp collection chamber; 405, side pulp outlet pipe; 406, side screen plate. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] Example

[0043] Please see Figure 1 As shown, the present invention provides a technical solution: a hydraulic pulping and slag removal machine, characterized in that it includes:

[0044] The pulper housing 1 has a hollow cavity structure, and the upper end of the pulper housing 1 is provided with a feed inlet 11;

[0045] The slag discharge mechanism includes at least one set of scraper plates 202 arranged at the bottom of the cavity inside the pulper housing 1 and a slag discharge port 207 cooperating with the scraper plates, for cleaning and discharging waste slag after pulping.

[0046] The pulping and screening components include a pulping cutter disc 301 arranged inside the pulper housing 1 and a pulp screen plate 306 that cooperates with the pulping cutter disc 301 for pulping and screening raw materials.

[0047] The good pulp collection chamber 304, which is formed by the screen plate 306 and has a pulp outlet pipe 305, is used to collect the good pulp liquid that passes through the screen plate 306; the good pulp collection chamber 304 is arranged on the pulper housing 1 below the pulping cutter disc 301.

[0048] In this embodiment, the slag discharge mechanism further includes a slag collection trough 201, which is located at the bottom of the pulper housing 1, surrounds the pulper cutter disc 301 and communicates with the cavity structure of the pulper housing 1, and is used to collect waste slag.

[0049] In this embodiment, specifically: the slag discharge mechanism further includes: a scraper connecting rod 204, connected to the bottom of the pulper housing 1, used to drive the scraper plate 202 to rotate, and the scraper plate 202 is fixedly installed at one end of the connecting rod 204; a hollow shaft 205, rotatably connected to the bottom of the pulper housing 1 through a bearing, used to drive the connecting rod 204 to rotate, and the connecting rod 204 is respectively fixed to the upper end of the hollow shaft 205; the hollow shaft 205 is sleeved on the outside of the transmission shaft 302; and a pulley 206 is installed at the bottom of the hollow shaft 205, used to drive the hollow shaft 205 to rotate.

[0050] In this embodiment, the slag discharge mechanism further includes: a filter plate 203 installed at the bottom of the scraper plate 202 for filtering moisture in the waste residue; and a water collection chamber 210 with an outlet 209 located below the filter plate.

[0051] In this embodiment, specifically: the slag discharge mechanism further includes: a water inlet pipe 208, which is set at the bottom of the pulper housing 1, for injecting water to wash the slag before slag discharge; and a slag washing water pipe 209, which is opened and arranged on the side of the pulper housing 1 away from the slag discharge port 207, for discharging slag washing water.

[0052] In this embodiment, specifically: the direction of water outlet of the water inlet pipe 208 corresponds to that of the slag scraper 202, and is used to assist the rotation of the slag scraper 202 by the hydraulic power of the incoming water.

[0053] In this embodiment, specifically: the pulping and screening component further includes: a drive shaft 302, which is rotatably connected to the bottom of the pulper housing 1 and is used to drive the pulping cutter disc 301 to rotate, and the pulping cutter disc 301 is fixed to the upper end of the drive shaft 302; and a pulley 303, which is installed at the lower end of the drive shaft 302 and is used to drive the drive shaft 302 to rotate.

[0054] In this embodiment, specifically: at least one set of reinforced pulping cutter discs 401 is provided in the middle of the pulper housing 1; the second drive shaft 402 of the reinforced pulping cutter disc 401 is rotatably connected to the pulper housing 1 and is used to drive the reinforced pulping cutter disc 401 to rotate; the third pulley 403 is installed at the other end of the second drive shaft 402 and is used to drive the second drive shaft 402 to rotate.

[0055] It should also be noted that the side slurry collection chamber 404 is located on the back of the pulper side screen plate 406 on one side of the reinforced pulping cutter disc 401, and is used to collect slurry; the side slurry outlet pipe 405 is installed through the pulper side slurry collection chamber 404 and is connected to the side slurry collection chamber 404, and is used to discharge the slurry in the side slurry collection chamber 404.

[0056] In this embodiment, specifically: the at least one set of reinforced pulping cutter discs 401 is also provided with a pulp screen plate 406 that cooperates with the reinforced pulping cutter discs; the good pulp collection chamber 404 with a pulp outlet 405 formed by the screen plate 406 is used to collect the good pulp liquid that passes through the screen plate.

[0057] In this embodiment, specifically, the pulping screen plate is a microporous or microslit screen plate.

[0058] It should be noted that micropores refer to pores with a diameter of less than 2 mm but not exceeding 2 mm; microslits refer to sieve slits ≤ 0.5 mm.

[0059] It should also be noted that the above transmission method is a belt pulley. Of course, other transmission methods such as motor-driven gearbox transmission can also be used.

[0060] Working principle or structural principle: During use, the raw material is fed into the pulper housing 1 through the feed inlet 11 at the top. The bottom pulley 303 drives the drive shaft 302 to drive the pulping cutter disc 301 to rotate at high speed to complete hydraulic pulping. The pulleys 403 on both sides of the housing cooperate with the drive shaft 402 to drive the reinforced pulping cutter disc 401 to strengthen the crushing laterally. The pulp after crushing flows through the microporous or micro-slit pulp screen plate 306 (microporous refers to a pore diameter of less than 2 mm but not exceeding 2 mm; micro-slit refers to a screen gap ≤ 0.5 mm). Qualified pulp passes through the screen plate 306 and enters the good pulp collection chamber 304 and is sent out through the pulp outlet pipe 305. The pulp screened by the reinforced pulping cutter discs 401 on both sides flows into the side collection chamber 404 and is discharged through the side pulp outlet pipe 405. Impurities such as plastic and silt cannot pass through the screen plate and settle. The waste residue is lowered into the slag collection trough 201 surrounding the pulping cutter disc 301 at the bottom of the housing 1. The hollow shaft 205, fitted outside the drive shaft 302, is driven independently by the bottom pulley 206 and, through the connecting rod 204, drives the bottom scraper 202 to rotate circumferentially around the entire slag collection trough 201, continuously pushing the waste residue to the discharge port 207. The filter plate 203 at the bottom of the scraper 202 can filter the water in the waste residue and recover fiber white water. The water inlet pipe 208 at the bottom of the pulper housing 1, facing the water outlet of the scraper 202, flushes the waste residue and recovers the entrained fibers on the one hand, and uses hydraulic assistance to rotate the scraper 202 to reduce the driving load on the other hand. The fiber-containing pulp water generated from washing the residue is discharged outside the pulper housing 1 through the washing water pipe 209 away from the discharge port 207. The dewatered and washed waste residue is automatically discharged through the discharge port 207. The equipment operates in the following order: pulping, screening, automatic scraping, washing, dewatering and slag discharge. The pulping cutter disc 301, the reinforced pulping cutter disc 401, and the scraping mechanism are driven separately by independent belt pulleys, or they can be replaced by motor gearbox transmission. The whole machine does not require external slag removal auxiliary equipment and completes the entire process of waste paper shredding, pulp screening, automatic slag discharge, and fiber recycling in one integrated manner.

[0061] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0062] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0063] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A hydraulic pulping and slag removal machine, characterized in that: include: The pulper housing (1) has a hollow cavity structure, and the upper end of the pulper housing (1) is provided with a feed inlet (11). The slag discharge mechanism includes at least one set of scraper plates (202) arranged at the bottom of the cavity inside the pulper housing (1) and a slag discharge port that cooperates with the scraper plates, for cleaning and discharging waste slag after pulping; The pulping and screening components include a pulping cutter disc (301) arranged in the pulper housing (1) and a pulp screen plate (306) cooperating with the pulping cutter disc for pulping and screening raw materials; At least one good pulp collection chamber (304) is formed with the screen plate and has at least one pulp outlet pipe (305) for collecting good pulp slurry passing through the screen plate; at least one good pulp collection chamber (304) is arranged on the pulper housing (1) on the back of the pulping cutter disc (301).

2. The hydraulic pulping and slag removal machine according to claim 1, characterized in that: The slag removal mechanism also includes: The slag collection trough (201) that cooperates with the scraper plate (202) is opened at the bottom of the pulper housing (1), surrounds the bottom pulping cutter disc (301) and communicates with the cavity structure of the pulper housing (1), and is used to collect waste residue.

3. The hydraulic pulping and slag removal machine according to claim 1, characterized in that: The slag removal mechanism also includes: The sliding scraper connecting rod (204) is connected to the bottom of the pulper housing (1) and is used to drive the scraper plate (202) to rotate. The scraper plate (202) is fixedly installed at one end of the connecting rod (204). The hollow shaft (205) is rotatably connected to the bottom of the pulper housing (1) via bearings, and is used to drive the connecting rod (204) to rotate. The connecting rod (204) is fixed to the upper end of the hollow shaft (205). The hollow shaft (205) is sleeved on the outside of the drive shaft (302); A pulley (206) is installed at the bottom of the hollow shaft (205) and is used to drive the hollow shaft (205) to rotate.

4. A hydraulic pulping and slag discharge machine according to claim 2, characterized in that: The slag removal mechanism also includes: The sludge filter plate (203) is installed at the bottom of the sludge scraper plate (202) and is used to filter the water in the sludge; the water collection chamber (210) with the water outlet is located below the filter plate.

5. A hydraulic pulping and slag discharge machine according to claim 3, characterized in that: The slag removal mechanism also includes: The water inlet pipe (208) is located at the bottom of the pulper casing (1) and is used for water injection and washing of slag before slag discharge; A slag washing water pipe (209) is provided on the side of the pulper housing (1) away from the slag discharge port (207) for discharging slag washing water.

6. A hydraulic pulping and slag discharge machine according to claim 4, characterized in that: The direction of water outlet of the water inlet pipe (208) corresponds to that of the slag scraper (202), and is used to hydraulically assist the rotation of the slag scraper (202) through the water inlet.

7. A hydraulic pulping and slag discharge machine according to claim 1, characterized in that: The pulp screening unit also includes: Drive shaft 1 (302) is rotatably connected to the bottom of the pulper housing (1) to drive the pulping cutter disc (301) to rotate, and the pulping cutter disc (301) is fixed to the upper end of drive shaft 1 (302); The second pulley (303) is installed at the lower end of the first drive shaft (302) and is used to drive the first drive shaft (302) to rotate.

8. A hydraulic pulping and slag discharge machine according to claim 1, characterized in that: At other parts of the pulper housing (1), at least one set of reinforced pulping cutter discs (401) is provided; the drive shaft two (402) of the reinforced pulping cutter disc (401) is rotatably connected to the pulper housing (1) and is used to drive the reinforced pulping cutter disc (401) to rotate; Pulley 3 (403) is installed at the other end of drive shaft 2 (402) and is used to drive drive shaft 2 (402) to rotate.

9. A hydraulic pulping and slag discharge machine according to claim 7, characterized in that: The at least one set of reinforced pulping cutter discs is also provided with a pulp screen plate that cooperates with the reinforced pulping cutter discs; a good pulp collection chamber with a pulp outlet is formed with the screen plate to collect the good pulp liquid that has passed through the screen plate.

10. A hydraulic pulping and slag discharge machine according to claim 1, characterized in that: The pulping screen plate is a microporous or microslit screen plate.

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