Wastewater pretreatment device for clean papermaking

Abstract

The utility model relates to the technical field of clean papermaking, in particular to a wastewater pretreatment device for clean papermaking, which comprises a device barrel, a support frame and a water inlet pipe, the outer side of the lower end of the device barrel is fixedly connected with the support frame, the inner side of the device barrel is communicated with the water inlet pipe, the inner side of the device barrel is fixedly connected with a drain pipe, and the outer side of the device barrel is fixedly connected with a slag outlet. The outer side of the upper end of the device barrel is fixedly connected with a pretreatment device, the pretreatment device comprises a motor, the tail end of a main shaft of the motor is fixedly connected with a driving shaft, the outer side of the driving shaft is sleeved with a telescopic spring, the outer side of the driving shaft is fixedly connected with a limiting block, the outer side of the driving shaft is fixedly connected with a cover cylinder, and the outer side of the driving shaft is fixedly and slidably connected with a plate cleaning assembly; according to the device disclosed by the utility model, through the innovative structural design, not only is the wastewater treatment efficiency improved, but also the maintenance cost is reduced, and the device has important practical value for cleaning the papermaking industry.

Description

TECHNICAL FIELD

[0001] The utility model relates to clean papermaking technical field, concretely is a kind of wastewater pretreatment device for clean papermaking. BACKGROUND

[0002] The wastewater pretreatment device for clean papermaking is a device specially designed to treat wastewater generated during the papermaking process. The main purpose of these devices is to pretreat the wastewater before it enters the more advanced treatment system, to improve the wastewater quality, meet the requirements of subsequent treatment processes, and ensure the stability of the entire treatment system.

[0003] The wastewater pretreatment device for clean papermaking is a preliminary treatment of wastewater generated during the papermaking process to reduce pollutants in wastewater and improve water quality, making it more suitable for subsequent treatment stages. It is an important part of the entire wastewater treatment system, which lays the foundation for subsequent advanced treatment by preliminary treatment of wastewater, ensuring the efficiency and effectiveness of wastewater treatment.

[0004] The wastewater generated by the papermaking production line will pass through the grid inclined net to filter and remove part of the fine fiber material. This step can remove large suspended solids and paper sheets in the wastewater to prevent them from clogging the sewage pump.

[0005] During the preliminary treatment of wastewater generated by clean papermaking using the wastewater pretreatment device, the wastewater used in clean papermaking contains a large amount of paper pulp fiber scraps, and these paper pulp fiber scraps are insoluble in water. The main function of the wastewater pretreatment device is to separate and filter the solid materials in clean papermaking to facilitate the subsequent wastewater treatment device to perform advanced treatment on the wastewater generated by clean papermaking, so that the wastewater from clean papermaking meets the non-pollution, non-pollution discharge or recycling standard. However, the filter plate or grid plate in the wastewater pretreatment device for filtering paper pulp fiber scraps has a relatively long span during use. During the process of passing through the filter plate or grid plate with wastewater, the long diameter fiber scraps are easily inserted into the holes of multiple filter plates or grid plates at the same time, thereby reducing the flow efficiency of wastewater in the filter plate or grid plate. Therefore, a wastewater pretreatment device for clean papermaking is proposed to solve the above problems. SUMMARY

[0006] The utility model aims at providing a wastewater pretreatment device for clean papermaking to solve the problem of paper pulp fiber scraps having a relatively long span, long diameter fiber scraps being easily inserted into the holes of multiple filter plates or grid plates at the same time during the process of passing through the filter plate or grid plate with wastewater, and thereby reducing the flow efficiency of wastewater in the filter plate or grid plate.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] The utility model provides a kind of papermaking wastewater pretreatment device, including device barrel, support frame and inlet pipe, the lower end outside of the device barrel is fixedly connected with support frame, the inside of the device barrel is connected with inlet pipe, the inside of the device barrel is fixedly connected with drain pipe, the outside of the device barrel is fixedly connected with slag outlet, the upper end outside of the device barrel is fixedly connected with pretreatment device, the pretreatment device includes motor, the main shaft end of the motor is fixedly connected with driving shaft, the outside of the driving shaft is equipped with telescopic spring, the outside of the driving shaft is fixedly connected with limit block, the outside of the driving shaft is fixedly connected with cover cylinder, the outside of the driving shaft is fixedly connected with clean plate assembly and slides, the clean plate assembly includes ring cylinder, the outside of the ring cylinder is fixedly connected with clean plate blade, the end of the clean plate blade away from the center of driving shaft is fixedly connected with scraper, the inside of the device barrel is fixedly connected with waste collecting ring, and the upper end outside of the waste collecting ring is fixedly connected with filter plate.

[0009] As the further optimization of the utility model, the number of the limit blocks is four, the limit blocks are evenly distributed outside the driving shaft with the driving shaft axis as the center, the ring cylinder slides outside the limit blocks, and the lower end of the limit block and the lower end of the ring cylinder are tightly attached to the upper side of the filter plate.

[0010] As the further optimization of the utility model, a sliding groove is formed in the inside of the ring cylinder, the height of the sliding groove in the inside of the ring cylinder is one and a half times the height of the limit block, the outside of the ring cylinder is tightly attached to the inner wall of the cover cylinder, and the ring cylinder slides inside the cover cylinder.

[0011] As the further optimization of the utility model, the telescopic spring is arranged inside the cover cylinder, the lower end of the telescopic spring is tightly attached to the ring cylinder, the upper end of the telescopic spring is tightly attached to the upper end inside the cover cylinder, and the telescopic spring is a compressed spring.

[0012] As the further optimization of the utility model, the number of the clean plate blades and the number of the scrapers are both four, the clean plate blades are evenly arranged outside the ring cylinder with the ring cylinder axis as the center, the optimal arc side of the clean plate blade faces the clockwise rotation direction of the driving shaft, the side cross section of the clean plate blade is triangular, and the clean plate blade is tightly attached to the upper side of the filter plate.

[0013] As the further optimization of the utility model, the scraper slides inside the waste collecting ring, the side of the scraper close to the center of the driving shaft is tightly attached to the outer ring of the filter plate, and the side of the scraper away from the center of the driving shaft is tightly attached to the inner wall of the device barrel.

[0014] As the further optimization of the utility model, the lower bottom opening of the communication opening between the device barrel and the slag outlet is on the same horizontal plane as the lower side of the scraper, and the inner and outer diameters of the upper end portion of the waste collecting ring gradually increase from top to bottom.

[0015] Compared with the prior art, the papermaking wastewater treatment device has the advantages that:

[0016] In the utility model, through setting up telescopic spring, limit block, clear board blade and waste collecting ring, the treatment efficiency and the filtering performance of the clean papermaking wastewater are improved obviously, the cooperation of the device barrel and the filter plate and the reasonable layout of the water inlet pipe make the wastewater enter the upper side of the filter plate directly, the synchronous rotation of the limit block and the cover cylinder driven by the driving shaft driven by the motor is ensured, the close contact of the cover cylinder and the filter plate is ensured, the pulp fiber scraps are prevented from entering the filter plate, the filtering is kept unobstructed, the design of the clear board blade improves the efficiency of removing the residues on the filter plate, the triangular side section enhances the strength and the cleaning effect of the blade, the cooperation of the scraper and the waste collecting ring realizes the effective collection and discharge of the solid waste, as a whole, the device improves the efficiency of the wastewater treatment and reduces the maintenance cost through the innovative structural design, and has important practical value for the clean papermaking industry. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic view of the utility model;

[0018] Figure 2 It is the internal structure schematic view of the device barrel of the utility model;

[0019] Figure 3 It is the internal structure schematic view of the cover cylinder of the utility model;

[0020] Figure 4 It is the cover cylinder explosion structure schematic view of the utility model;

[0021] Figure 5 It is the clear board assembly structure schematic view of the utility model.

[0022] In the drawing: 1, device barrel; 2, support frame; 3, water inlet pipe; 4, drain pipe; 5, residue outlet;

[0023] 6, pretreatment device; 61, motor; 62, driving shaft; 63, telescopic spring; 64, limit block; 65, cover cylinder;

[0024] 66, clear board assembly; 661, cover cylinder; 662, clear board blade; 663, scraper;

[0025] 67, waste collecting ring; 68, filter plate. DETAILED DESCRIPTION

[0026] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] It is to be noted that the terms used herein are merely for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that, when the terms "comprise" and / or "include" are used in the specification, there is a presence of a feature, step, operation, device, component and / or combination thereof.

[0028] Please refer to Figures 1-5 The present application provides a technical scheme:

[0029] A kind of wastewater pretreatment device for cleaning papermaking, including device barrel 1, support frame 2 and inlet pipe 3, device barrel 1 lower end outer side is fixedly connected with support frame 2, device barrel 1 inner side is connected with inlet pipe 3, device barrel 1 inner side is fixedly connected with drain pipe 4, device barrel 1 outer side is fixedly connected with slag outlet 5, device barrel 1 upper end outer side is fixedly connected with pretreatment device 6, pretreatment device 6 includes motor 61, motor 61 main shaft end is fixedly connected with driving shaft 62, driving shaft 62 outer side is sleeved with telescopic spring 63, driving shaft 62 outer side is fixedly connected with limit block 64, driving shaft 62 outer side is fixedly connected with cover cylinder 65, driving shaft 62 outer side is fixedly connected with clear plate assembly 66, clear plate assembly 66 includes ring cylinder 661, ring cylinder 661 outer side is fixedly connected with clear plate blade 662, clear plate blade 662 end away from the center of driving shaft 62 is fixedly connected with scraper 663, device barrel 1 inner side is fixedly connected with waste collecting ring 67, waste collecting ring 67 upper end outer side is fixedly connected with filter plate 68.

[0030] As a further implementation of the present scheme, the number of limit blocks 64 is four, the limit blocks 64 are evenly distributed on the outer side of the driving shaft 62 with the axis of the driving shaft 62 as the center, the ring cylinder 661 slides on the outer side of the limit blocks 64, the lower end of the limit blocks 64 and the lower end of the ring cylinder 661 are in close contact with the upper side of the filter plate 68, and the even distribution design ensures the stable sliding of the ring cylinder 661 around the driving shaft 62, and the close contact with the filter plate 68 helps to improve the filtering efficiency;

[0031] As a further implementation of the present scheme, a sliding groove is formed on the inner side of the ring cylinder 661, the height of the sliding groove on the inner side of the ring cylinder 661 is one and a half times the height of the limiting block 64, the outer side of the ring cylinder 661 is in close contact with the inner wall of the cover cylinder 65, the ring cylinder 661 slides in the inner side of the cover cylinder 65, the design of the sliding groove enables the ring cylinder 661 to slide smoothly in the cover cylinder 65, increasing the flexibility and stability of the device, and the precise proportion of the height of the sliding groove helps to maintain the compactness of the structure;

[0032] As a further implementation of the present scheme, the telescopic spring 63 is arranged on the inner side of the cover cylinder 65, the lower end of the telescopic spring 63 is in close contact with the ring cylinder 661, the upper end of the telescopic spring 63 is in close contact with the upper end of the inner side of the cover cylinder 65, the telescopic spring 63 is a compressed spring, the arrangement of the telescopic spring 63 provides the necessary elastic force, which helps to maintain the close contact between the ring cylinder 661 and the cover cylinder 65, and the compressed state of the spring can provide continuous tension to ensure the stability of the ring cylinder 661 during operation;

[0033] As a further implementation of the present scheme, the number of the plate cleaning blades 662 and the number of the scrapers 663 are both four, the plate cleaning blades 662 are evenly arranged on the outer side of the ring cylinder 661 with the center of the ring cylinder 661 as the center, the convex arc side of the plate cleaning blades 662 faces the clockwise rotation direction of the drive shaft 62, the side cross section of the plate cleaning blades 662 is triangular, the plate cleaning blades 662 are in close contact with the upper side of the filter plate 68, the uniform distribution and specific shape design of the plate cleaning blades 662 help to efficiently remove the residues on the filter plate 68, the triangular side cross section increases the strength and cleaning effect of the blades, and the close contact with the filter plate 68 improves the cleaning efficiency;

[0034] As a further implementation of the present scheme, the scraper 663 slides in the inner side of the waste collecting ring 67, the side of the scraper 663 close to the center of the drive shaft 62 is in close contact with the outer circle of the filter plate 68, the side of the scraper 663 away from the center of the drive shaft 62 is in close contact with the inner wall of the device barrel 1, the design of the scraper 663 enables it to slide effectively in the inner side of the waste collecting ring 67, and the close contact with the filter plate 68 and the device barrel 1 helps to collect waste efficiently, improving the efficiency of waste treatment;

[0035] As a further implementation of the present scheme, the lower bottom opening of the communication opening between the device barrel 1 and the slag outlet 5 is at the same horizontal plane as the lower side of the scraper 663, and the inner and outer diameters of the upper end portion of the waste collecting ring 67 gradually increase from top to bottom, which ensures smooth connection between the device barrel 1 and the slag outlet 5, facilitating the discharge of waste, and the gradual increase in the diameter of the waste collecting ring 67 helps to guide and collect waste, improving the collection efficiency.

[0036] Workflow: the device is powered by external power supply during use, when the wastewater pretreatment device is used to preliminarily treat the clean papermaking wastewater, the clean papermaking wastewater enters the inside of the device barrel 1 through the water inlet pipe 3, and the water inlet pipe 3 is above the filter plate 68 in the device barrel 1, so that the wastewater conveyed in the water inlet pipe 3 can be directly injected above the filter plate 68, at this time, the motor 61 fixedly connected to the upper end of the device barrel 1 is started, so that the motor 61 main shaft rotates while driving the driving shaft 62 fixedly connected thereto to rotate inside the device barrel 1, and the driving shaft 62 can drive the evenly distributed limiting blocks 64 and the cover cylinder 65 outside to rotate synchronously, since the ring cylinder 661 is sleeved outside the driving shaft 62 and is limited by the limiting blocks 64 to have the axial free turning performance, so that the rotation of the driving shaft 62 can drive the ring cylinder 661 to rotate synchronously, and the upper end of the ring cylinder 661 is pressed between the cover cylinder 65 and the extension spring 63, under the elastic restoring force of the extension spring 63, the ring cylinder 661 is always limited to be close to the filter plate 68, preventing the paper pulp fiber debris of the clean papermaking from entering between the driving shaft 62 and the filter plate 68, with the rotation of the ring cylinder 661, the ring cylinder 661 can drive the cleaning blade 662 fixedly connected outside to rotate close to the filter plate 68, so that the cleaning blade 662 can cut off the paper pulp fiber debris inserted between the filter holes of the filter plate 68, and under the impact of the continuously input wastewater, the paper pulp fiber debris inserted inside the filter holes can be separated from the filter holes of the filter plate 68, and the paper pulp fiber and other solid materials still remaining above the filter plate 68 can be gradually moved to the waste collecting ring 67 fixedly connected outside the filter plate 68 along the convex arc side of the cleaning blade 662 under the action of the cleaning blade 662, so that the scraper 663 moves with the rotation of the cleaning blade 662, and the solid waste in the waste collecting ring 67 is scraped to the position of the slag outlet 5, so that the solid waste in the device is discharged, ensuring the treatment efficiency of the wastewater in the wastewater pretreatment device, and ensuring the filtering performance of the filter plate 68 to the clean papermaking wastewater.

[0037] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A pretreatment device for clean papermaking wastewater, comprising a device tank (1), a support frame (2), and an inlet pipe (3), characterized in that: A support frame (2) is fixedly connected to the lower outer side of the device barrel (1), a water inlet pipe (3) is connected through the inner side of the device barrel (1), a drain pipe (4) is fixedly connected to the inner side of the device barrel (1), a slag outlet (5) is fixedly connected to the outer side of the device barrel (1), and a pretreatment device (6) is fixedly connected to the upper outer side of the device barrel (1). The pretreatment device (6) includes a motor (61), a drive shaft (62) is fixedly connected to the end of the main shaft of the motor (61), a telescopic spring (63) is sleeved on the outside of the drive shaft (62), a limit block (64) is fixedly connected to the outside of the drive shaft (62), a cover (65) is fixedly connected to the outside of the drive shaft (62), a cleaning plate assembly (66) is fixedly and slidably connected to the outside of the drive shaft (62), the cleaning plate assembly (66) includes an annular cylinder (661), a cleaning plate blade (662) is fixedly connected to the outside of the annular cylinder (661), a scraper (663) is fixedly connected to one end of the cleaning plate blade (662) away from the center of the drive shaft (62), a waste collection ring (67) is fixedly connected to the inside of the device barrel (1), and a filter plate (68) is fixedly connected to the outer side of the upper end of the waste collection ring (67).

2. The wastewater pretreatment device for clean papermaking according to claim 1, characterized in that: There are four limiting blocks (64) in total. The limiting blocks (64) are evenly distributed on the outside of the drive shaft (62) with the axis of the drive shaft (62) as the center. The ring cylinder (661) slides on the outside of the limiting blocks (64). The lower end of the limiting blocks (64) and the lower end of the ring cylinder (661) are in close contact with the upper side of the filter plate (68).

3. The wastewater pretreatment device for clean papermaking according to claim 1, characterized in that: The inner side of the ring cylinder (661) is provided with a sliding groove. The height of the sliding groove on the inner side of the ring cylinder (661) is 1.5 times the height of the limiting block (64). The outer side of the ring cylinder (661) is in close contact with the inner wall of the cover cylinder (65). The ring cylinder (661) slides on the inner side of the cover cylinder (65).

4. The wastewater pretreatment device for clean papermaking according to claim 1, characterized in that: The telescopic spring (63) is disposed inside the cover (65). The lower end of the telescopic spring (63) is in close contact with the ring cylinder (661), and the upper end of the telescopic spring (63) is in close contact with the upper end of the inner side of the cover (65). The telescopic spring (63) is a compressed spring.

5. The wastewater pretreatment device for clean papermaking according to claim 1, characterized in that: The number of cleaning blades (662) is the same as the number of scrapers (663), which is four. The cleaning blades (662) are evenly arranged on the outside of the ring cylinder (661) with the axis of the ring cylinder (661) as the center. The superior arc side of the cleaning blades (662) faces the clockwise rotation direction of the drive shaft (62). The side cross section of the cleaning blades (662) is triangular. The cleaning blades (662) are in close contact with the upper side of the filter plate (68).

6. The wastewater pretreatment device for clean papermaking according to claim 1, characterized in that: The scraper (663) slides inside the waste collection ring (67). The side of the scraper (663) closest to the center of the drive shaft (62) is in close contact with the outer ring of the filter plate (68), and the side of the scraper (663) furthest from the center of the drive shaft (62) is in close contact with the inner wall of the device barrel (1).

7. The wastewater pretreatment device for clean papermaking according to claim 1, characterized in that: The bottom opening of the device barrel (1) and the slag outlet (5) is on the same horizontal plane as the lower side of the scraper (663), and the inner and outer diameters of the upper part of the waste collection ring (67) gradually increase from top to bottom.

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