Automatic closed drum pulp washer device

Abstract

The utility model discloses an automatic closed rotary drum pulp washer device, comprising a lower net, an upper net and a rotary drum. The lower net and the upper net are provided with tensioning force by a lower net tensioning device and an upper net tensioning device respectively. The upper net tensioning device is installed on the upper part of a frame and keeps a vertical relationship with the running path of the upper net. The lower net and the upper net are respectively guided by a guide roller 1 and a guide roller 2 to wrap and fix pulp on the outer surface of the rotary drum to form a closed structure for clamping the pulp. A secondary pressing device is arranged on the right side of the rotary drum, a primary pressing device is arranged at the lower right side of the rotary drum, a main pressing device is arranged above the rotary drum, and the primary pressing device, the secondary pressing device and the main pressing device are arranged in sequence along the pulp conveying path. The equipment adopts a water receiving tray and a pulp supporting plate with a layered design to effectively prevent waste liquid leakage and pulp residue from polluting the environment. By optimizing energy consumption and heat energy loss, the consumption of energy and chemical raw materials is further reduced, thereby achieving the goal of energy conservation and emission reduction.

Description

Technical Field

[0001] The utility model relates to the technical field of pulp washers, in particular to an automatic closed rotary drum type pulp washer device. Background Art

[0002] The papermaking industry has always been a key industry for pollution emissions, and it is also one of the high-energy consumption industries. For a long time, China's pulp and papermaking enterprises that mainly use non-wood raw materials generally have problems such as small scale and backward equipment. There is a large gap between their wastewater treatment level and the international average, and they have become one of the main sources of pollution. Under the background of carbon peak and carbon neutrality policies, my country's requirements for energy conservation, emission reduction and water environment management are becoming increasingly stringent. Equipment used for filtration, extrusion and dehydration in the pulping process has become the key to the sustainable development of papermaking enterprises. In particular, the improvement of pulp dryness can not only reduce transportation costs, but also significantly reduce energy consumption and environmental pollution. However, the existing technology has problems such as high moisture content, high power consumption, and limited dryness improvement effect, which makes it difficult to meet the needs of the modern papermaking industry. Therefore, an automatic closed drum pulp washer device is proposed. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide an automatic closed rotary drum pulp washer device. The equipment adopts a layered water receiving tray and a pulp supporting plate to effectively prevent waste liquid leakage and pulp residue from polluting the environment; by optimizing energy consumption and heat energy loss, the consumption of energy and chemical raw materials is further reduced, thereby achieving the goals of energy conservation, emission reduction and efficient operation, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic closed rotary drum pulp washer device, comprising a lower net, an upper net and a rotary drum, the lower net and the upper net are provided with tensioning force by a lower net tensioning device and an upper net tensioning device respectively, the upper net tensioning device is installed on the upper part of the frame, and maintains a vertical relationship with the running path of the upper net, the lower net and the upper net are respectively guided by guide rollers one and two, the pulp is wrapped and fixed on the outer surface of the rotary drum, and a closed structure for clamping the pulp is formed, a secondary pressing device is arranged on the right side of the rotary drum, a primary pressing device is arranged at the lower right side of the rotary drum, a main pressing device is arranged above the rotary drum, the primary pressing device, the secondary pressing device and the main pressing device are arranged in sequence along the pulp conveying path, the main pressing device is connected to the inlet of the pulping device, the outlet of the pulping device is connected to the inlet of the closed conveying screw, the closed conveying screw is connected to the pulp conveying pipe, and the pulping device has a water adding function.

[0005] Furthermore, the lower net tensioning device is arranged on the left side of the frame, an operating platform is arranged above the frame, the operating platform is equipped with railings and stairs, a pulp washer foundation is arranged below the frame, and a transmission device is arranged on the frame.

[0006] Furthermore, it also includes a pulp supporting plate and a water receiving tray. The pulp supporting plate is located below the clamping path between the lower net and the upper net, and the water receiving tray is located below the pulp supporting plate.

[0007] Furthermore, a shield assembly is arranged on the outside of the frame, and the shield assembly includes a top front sealing cover, a top rear sealing cover, a rear shield, a tensioning upper shield, a lower tensioning shield, a lower frame shield, a slurry delivery pipe and an upper right shield.

[0008] Furthermore, an upper screen scraper is provided at the exit position of the upper screen running path, and the upper screen scraper is close to the rear of the secondary pressing device or the main pressing device. A lower screen scraper is provided at the exit position of the lower screen running path, and the lower screen scraper is fixed to the frame through a supporting structure, maintaining a vertical relationship with the lower screen running path.

[0009] Furthermore, a material distribution device is arranged above the feed port of the lower net, and the material distribution device is a flat plate or an arc plate structure.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. This device gradually improves the dryness of the pulp through a multi-stage pressing device, effectively solving the problem of low dryness of the existing equipment, reducing transportation costs and energy consumption, and meeting the processing requirements of subsequent processes. The clamping structure of the upper and lower mesh belts is combined with a closed design to uniformly pressurize the pulp during the dehydration process, effectively preventing the pulp from slipping or scattering, thereby significantly improving the dehydration efficiency and the stability of equipment operation.

[0012] 2. The equipment adopts reasonable mechanism layout and multifunctional component design. The compact structure layout not only saves space, but also improves the overall integration of the equipment, which is very suitable for promotion and application in modern factories. The closed structure design reduces heat loss and reduces operating energy consumption by optimizing the power system, thereby reducing the use of energy and chemical raw materials and fully achieving the goal of energy conservation and emission reduction.

[0013] 3. The device uses a layered support plate and water tray to effectively collect waste liquid and residue during the dehydration process, prevent pollutants from spilling out, and significantly reduce the negative impact on the environment. Combined with intelligent limit sensors and automatic adjustment devices, the equipment achieves precise control of the belt tension and running trajectory, providing reliable guarantee for green and efficient production. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a side view of the structure of the utility model;

[0015] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0016] Figure 3 This is a left-side structural schematic diagram of the utility model;

[0017] Figure 4 This is the axonometric drawing of the utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the protective cover assembly of the utility model;

[0019] Figure 6 This is a schematic diagram of the sensor configuration structure of the utility model.

[0020] In the figure: 1 lower net, 2 upper net, 3 frame, 4 drum, 5 secondary pressing, 6 one group of pressing, 7 guide roller 1, 8 guide roller 2, 9 lower net tensioning device, 10 upper net tensioning device, 11 water receiving tray, 12 upper net scraper, 13 operating table, 14 transmission device, 15 pulp support plate, 16 lower net scraper, 17 material distribution device, 18 pulp crushing device, 19 closed conveying screw, 20 main pressing device, 21 pulp washer foundation, 22 top front sealing cover, 23 top rear sealing cover, 24 rear guard, 25 tensioning upper guard, 26 lower tensioning guard, 27 lower frame guard, 28 pulp delivery pipe, 29 upper right guard, 30 automatic limit sensor, 31 automatic adjustment device, 32 automatic adjustment sensor. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] See also Figure 1-6The utility model provides a technical solution: an automatic closed rotary drum pulp washer device, comprising a lower net 1, an upper net 2 and a rotary drum 4, wherein the lower net 1 and the upper net 2 are provided with tensioning force by a lower net tensioning device 9 and an upper net tensioning device 10 respectively, and the upper net tensioning device 10 is installed on the upper part of the frame 3, and maintains a vertical relationship with the running path of the upper net 2, and the lower net 1 and the upper net 2 are respectively guided by a guide roller 1 7 and a guide roller 2 8 to wrap and fix the pulp on the outer surface of the rotary drum 4, forming a closed structure for clamping the pulp, so that the pulp is subjected to uniform pressure during the dehydration process, and the pulp is prevented from slipping or scattering, a secondary pressing device 5 is arranged on the right side of the rotary drum 4, a primary pressing device 6 is arranged at the lower right side of the rotary drum 4, and a main pressing device 20 is arranged above the rotary drum 4, and the primary pressing device 6, the secondary ... The pressing device 5 and the main pressing device 20 are arranged in sequence along the pulp conveying path. The pressing device is arranged on one side along the circumferential direction of the drum 4, which is beneficial to the layout of the equipment, making the equipment more compact and saving space. The main pressing device 20 is connected to the inlet of the pulping device 18. By gradually increasing the pressing force, the pulp dryness is gradually increased to about 30% to meet the subsequent processing requirements. The outlet of the pulping device 18 is connected to the inlet of the closed conveying screw 19, and the closed conveying screw 19 is connected to the pulp conveying pipe 28. The pulping device 18 has a water adding function, which dilutes the pulp squeezed to about 30% to about 12-17%, and then enters the closed conveying screw 19 to continue adding water to adjust to a concentration of 5-8% before sending it to the next process to ensure that the pulp fluidity is suitable for subsequent processing.

[0023] The lower net tensioning device 9 is arranged on the left side of the frame 3. The lower net tensioning device 9 is connected by adjusting the screw or the bearing seat of the hydraulic system. The position of the device is adjustable, allowing the operator to adjust the tightness of the lower net 1 according to the operating status to ensure that the net belt is flat and does not slip during operation. The upper net tensioning device 10 and the lower net tensioning device 9 are both conventional technologies, and the specific structure will not be introduced in detail. The two work together to optimize the running trajectory of the net belt and improve the pulp dewatering efficiency. An operating table 13 is arranged above the frame 3, and the operating table 13 is equipped with railings and stairs. A pulp washer foundation 21 is arranged below the frame 3, and a transmission device 14 is arranged on the frame 3. The transmission device 14 is a reduction motor and a pulley transmission assembly, which is a conventional transmission structure and will not be introduced here.

[0024] It also includes a pulp support plate 15 and a water receiving tray 11. The pulp support plate 15 is located below the clamping path between the lower net 1 and the upper net 2, is in direct contact with the slurry, and plays a role in supporting the slurry. The water receiving tray 11 is located below the pulp support plate 15. The function of the water receiving tray 11 is to prevent the waste liquid and slurry residue generated during the dehydration process from overflowing around the equipment. The layered design of the pulp support plate and the water receiving tray prevents the slurry from falling directly to the bottom of the equipment and reduces the pollution of the environment to the waste liquid during the dehydration process.

[0025] A shield assembly is arranged on the outside of the frame 3, and the shield assembly includes a top front sealing cover 22, a top rear sealing cover 23, a rear shield 24, a tensioning upper shield 25, a lower tensioning shield 26, a lower frame shield 27, a slurry pipe 28 and an upper right shield 29. The specific setting position of the shield is set according to actual conditions. The shield adopts a split structure, which is easy to assemble and plays a role in sealing and protecting the setting.

[0026] A web scraper 12 is provided at the exit position of the upper web 2 running path. The web scraper 12 is close to the rear of the secondary pressing device 5 or the main pressing device 20. The web scraper 12 is used to remove the pulp residue and moisture attached to the upper web, and the scraped pulp and waste liquid directly fall into the water receiving tray 11, so as to keep the overall cleanliness and efficient operation of the equipment. A lower web scraper 16 is provided at the exit position of the lower web 1 running path. The lower web scraper 16 is fixed on the frame 3 through a supporting structure and maintains a vertical relationship with the running path of the lower web 1. The two are distributed up and down to clean the surfaces of the upper web and the lower web respectively, so as to ensure the smooth operation of the mesh belt. Both the web scraper 12 and the lower web scraper 16 are made of wear-resistant materials, such as polyurethane or high-temperature resistant rubber, which can avoid wear on the surface of the mesh belt while cleaning the mesh belt.

[0027] A distribution device 17 is provided above the feed port of the lower net 1 to evenly distribute the slurry on the lower net 1, providing a uniform slurry foundation for subsequent dehydration and pressing. The distribution device 17 is a flat plate or arc plate structure. The width of the distribution device 17 matches the width of the lower net 1 and can cover the slurry distribution area.

[0028] The pulping device 18 and the closed conveying screw 19 are both existing equipment.

[0029] Automatic limit sensors 30 and automatic adjustment sensors 32 are arranged on the sides of the running paths of the lower net 1 and the upper net 2. The installation position is designed to monitor the running status of the upper and lower nets in real time and avoid interference from slurry or other impurities. The adjustment area of ​​the lower net tensioning device 9 and the upper net tensioning device 10 is provided with an automatic adjustment device 31. The driving mechanism is the core of the automatic adjustment device 31 and is used to perform tensioning or position adjustment actions. Common forms include: motor drive: accurately control the tension of the mesh belt through a servo motor or a stepper motor; hydraulic drive: provide high-precision adjustment force through a hydraulic cylinder; pneumatic drive: controlled by a cylinder, suitable for scenes with relatively small tension requirements; function: receive signals from a control system or sensor, perform adjustment actions, adjust the angles of guide rollers 1 7 and 2 8 or the forces of the lower net tensioning device 9 and the upper net tensioning device 10 to control the tension and running trajectory of the mesh belt, and receive operation signals from the automatic limit sensor 30 and the automatic adjustment sensor 32 through a control module; generate specific adjustment instructions based on sensor feedback to control the drive mechanism to perform precise adjustment actions.

[0030] When in use: the automatic closed drum pulp washer device achieves efficient dehydration and transportation of the pulp through the clamping of the lower net 1 and the upper net 2 and the rotation of the drum 4. The pulp enters the distribution device 17 through the pulp delivery pipe and is evenly distributed on the lower net 1. The lower net 1 and the upper net 2 maintain appropriate tension under the action of the lower net tensioning device 9 and the upper net tensioning device 10 to ensure that the pulp is stably clamped, and a closed clamping structure close to the outer surface of the drum 4 is formed through the guidance of the guide roller 1 7 and the guide roller 2 8. Driven by the drum 4, the pulp enters the primary pressing device 6, the secondary pressing device 5 and the main pressing device 20 in turn, and the pulp dryness is gradually increased from the initial 5%-8% to about 30% by gradually increasing the pressing force to meet the subsequent processing requirements.

[0031] After the pulp is dehydrated, it enters the pulping device 18 through the main pressing device 20. Water can be added to the pulping device and the closed conveying screw 19. The pulping device dilutes the pulp and adjusts the pulp with a dryness of about 30% to 12%-17%. Then the pulp is further diluted to a concentration of 5%-8% through the closed conveying screw 19 to ensure that its fluidity is suitable for subsequent processes. The equipment is equipped with a pulp support plate 15 and a water receiving tray 11 to collect waste liquid during the dehydration process to prevent waste liquid from polluting the environment. The upper scraper 12 and the lower scraper 16 are responsible for removing pulp residue and moisture on the surface of the mesh belt to ensure the cleanliness of the mesh belt and the stability of the equipment operation. Through the cooperation of the automatic limit sensor 30 and the automatic adjustment device 31, the equipment can monitor and adjust the tension and running trajectory of the mesh belt in real time to achieve intelligent and efficient operation.

[0032] The basic principles, main features and advantages of the present invention are shown and described above. Without departing from the spirit and scope of the present invention, the present invention may also be subject to various changes and improvements, which are all within the scope of the present invention to be protected.

Claims

1. An automatic closed rotary drum pulp washer device, comprising a lower screen (1), an upper screen (2) and a rotary drum (4), characterized in that: The lower net (1) and the upper net (2) are provided with tensioning force by a lower net tensioning device (9) and an upper net tensioning device (10), respectively. The upper net tensioning device (10) is installed on the upper part of the frame (3) and maintains a vertical relationship with the running path of the upper net (2). The lower net (1) and the upper net (2) are respectively guided by a guide roller 1 (7) and a guide roller 2 (8) to wrap and fix the pulp on the outer surface of the drum (4), thereby forming a closed structure for clamping the pulp. A secondary pressing device ( 5), a primary pressing device (6) is arranged at the lower right side of the rotary drum (4), and a main pressing device (20) is arranged above the rotary drum (4). The primary pressing device (6), the secondary pressing device (5) and the main pressing device (20) are arranged in sequence along the pulp conveying path. The main pressing device (20) is connected to the inlet of the pulping device (18), the outlet of the pulping device (18) is connected to the inlet of the closed conveying screw (19), and the closed conveying screw (19) is connected to the pulp conveying pipe (28).

2. The automatic closed drum pulp washer device according to claim 1, characterized in that: A lower net tensioning device (9) is arranged on the left side of the frame (3); an operating table (13) is arranged above the frame (3); a handrail and a staircase are provided on the operating table (13); a pulp washer foundation (21) is arranged below the frame (3); and a transmission device (14) is arranged on the frame (3).

3. The automatic closed drum pulp washer device according to claim 1, characterized in that: It also includes a pulp support plate (15) and a water receiving tray (11), wherein the pulp support plate (15) is located below the clamping path between the lower net (1) and the upper net (2), and the water receiving tray (11) is located below the pulp support plate (15).

4. The automatic closed drum pulp washer device according to claim 1, characterized in that: A shield assembly is arranged on the outside of the frame (3), and the shield assembly comprises a top front sealing cover (22), a top rear sealing cover (23), a rear shield (24), a tensioning upper shield (25), a lower tensioning shield (26), a lower frame shield (27), a slurry delivery pipe (28), and an upper right shield (29).

5. The automatic closed drum pulp washer device according to claim 1, characterized in that: An upper screen scraper (12) is provided at the exit position of the upper screen (2) running path, and the upper screen scraper (12) is close to the rear of the secondary pressing device (5) or the main pressing device (20). A lower screen scraper (16) is provided at the exit position of the lower screen (1) running path, and the lower screen scraper (16) is fixed to the frame (3) through a supporting structure, and maintains a vertical relationship with the running path of the lower screen (1).

6. The automatic closed drum pulp washer device according to claim 1, characterized in that: A material distribution device (17) is arranged above the material inlet of the lower net (1), and the material distribution device (17) is a flat plate or an arc-shaped plate structure.

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