Dehydration box for papermaking

Abstract

The utility model discloses a dewatering box for papermaking, which relates to the technical field of paper pulp dewaterer and comprises a dewaterer consisting of a concave case, a feed hopper and a material blocking device, the feed hopper is fixed at the top of one end of the concave case, the material blocking device is mounted at the other end of the concave case, a dewatering component is arranged on the inner side of the concave case, and the dewatering component is arranged on the inner side of the concave case. The dewatering assembly is used for conveying and dewatering paper pulp; the dewatering assembly comprises a dewatering box, a driving motor, a variable-diameter spiral feeding piece and an inclined flow guide piece. According to the utility model, the inclined flow deflectors are arranged, and water flow discharged from the screen holes above the central axis of the variable-diameter spiral feeding sheet flows downwards along the inclined surfaces of the inclined flow deflectors, so that the phenomenon that the water flow flowing out from the upper screen holes flows into the lower screen holes to cause the paper pulp to absorb water again can be avoided; the paper pulp dehydration efficiency and the dehydration effect are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pulp dehydrators, and specifically to a dewatering tank for papermaking. Background Technique

[0002] Pulp dewatering refers to using pressing equipment to dehydrate pulp, reducing the moisture content of the pulp to facilitate subsequent processing and transportation. Common pulp dewatering equipment includes screw presses, double-wire pressing machines, and filter presses.

[0003] A pulp screw dehydrator is a device that uses physical extrusion for dehydration. Its working principle is: the material enters the device from the feed box and is gradually pressed under the pressure of the screw auger during transportation. The excess water is discharged through the screen holes on the dewatering tank, and the material with most of the water removed is pushed open the material blocking device under the continuous transportation of the screw auger and is discharged from the device through the outlet.

[0004] When the pulp screw dehydrator is actually used, the water discharged from the screen holes above the outer wall of the dewatering tank will flow downward along the outer wall of the dewatering tank. During this process, the water flow will flow back into the dewatering tank through other screen holes, causing the material to absorb water again. To avoid this situation, a dewatering tank for papermaking is provided. Content of the Utility Model

[0005] The purpose of the utility model is to provide a dewatering tank for papermaking to solve the problems in the above background.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A dewatering tank for papermaking, including a dehydrator composed of a concave chassis, a feed hopper, and a material blocking device. The feed hopper is fixed at the top of one end of the concave chassis, the material blocking device is installed at the other end of the concave chassis, and a dewatering component is arranged inside the concave chassis. The dewatering component is used for conveying and dehydrating the pulp.

[0007] The dewatering component includes a dewatering tank, a driving motor, a variable-diameter spiral feeding blade, and an inclined guiding blade.

[0008] The dewatering tank is composed of multiple longitudinally distributed rods arranged in a ring and multiple horizontally distributed annular rings. The annular rings are fixedly welded to the outside of the multiple longitudinally distributed rods.

[0009] The driving motor is fixedly installed at one end of the concave chassis away from the material blocking device. The output end of the driving motor penetrates to the inside of the concave chassis and is fixedly connected to the variable-diameter spiral feeding blade. The variable-diameter spiral feeding blade extends through the inner cavity formed by the multiple longitudinally distributed rods and penetrates to the other end of the concave chassis.

[0010] The inclined guiding blade is fixed to the outside of the longitudinally distributed rod above the center line of the driving motor and is inclined downward.

[0011] A reinforcement assembly is provided on the outer side of the dewatering tank, and the reinforcement assembly is used to reinforce the dewatering tank and the inclined guide vanes.

[0012] As a further solution of the present utility model: Two groups of the inclined guide vanes are symmetrically arranged with the vertical center line of the driving motor as the center, and the inclined guide vanes are not fixed on the longitudinal rod at the topmost part.

[0013] As a further solution of the present utility model: Among a group of the inclined guide vanes on the same side, the tail end of the upper inclined guide vane is located above the middle part of the lower inclined guide vane.

[0014] As a further solution of the present utility model: The reinforcement assembly includes a semi-circular reinforcement plate, an inclined card slot, and a longitudinal connecting plate;

[0015] The inclined card slot is opened on the inner side of the semi-circular reinforcement plate, and the longitudinal connecting plates are symmetrically fixed at the upper and lower ends of the semi-circular reinforcement plate;

[0016] Two groups of the reinforcement assemblies are provided, and the two groups of the reinforcement assemblies are spliced and sleeved on the outer side of the dewatering tank. The semi-circular reinforcement plate is attached to the outer sides of a plurality of longitudinal rods, the inclined card slot is clamped on the outer side of the inclined guide vane, and the two longitudinal connecting plates are attached to each other to realize the reinforcement of the dewatering tank and the variable-diameter spiral feeding piece.

[0017] As a further solution of the present utility model: A single group of the reinforcement assemblies is provided with a plurality of semi-circular reinforcement plates distributed in the horizontal direction, and mounting holes are opened on the semi-circular reinforcement plates at both ends. Threaded holes matching the mounting holes on the semi-circular reinforcement plates are opened on the inner side of the concave-shaped machine box.

[0018] As a further solution of the present utility model: A conveying channel through which the variable-diameter spiral feeding piece passes is formed inside the concave-shaped machine box. The feeding hopper is communicated with the conveying channel, and the output end of the material blocking device forms a seal with the port of the conveying channel.

[0019] Compared with the prior art, the beneficial effects of the present utility model are:

[0020] By providing the inclined guide vanes, the water flow discharged through the screen holes above the central axis of the variable-diameter spiral feeding piece will flow downward along the inclined surface of the inclined guide vanes. In this way, it can be avoided that the water flow flowing out from the upper screen holes flows into the lower screen holes, resulting in the phenomenon that the pulp absorbs water again, and the pulp dewatering efficiency and dewatering effect are further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present utility model;

[0022] Figure 2Schematic diagram of the disassembly of the reinforcement component of the present utility model;

[0023] Figure 3 Schematic diagram of the disassembly of the dehydration component and the reinforcement component of the present utility model;

[0024] Figure 4 Schematic diagram of the structure of the dehydration tank and the inclined guide vane of the present utility model.

[0025] In the figure: 1. Dehydrator; 101. Concave chassis; 102. Feed hopper; 103. Material blocking device; 2. Dehydration component; 201. Dehydration tank; 2011. Longitudinal rod; 2012. Ring; 202. Driving motor; 203. Variable-diameter spiral feeding blade; 204. Inclined guide vane; 3. Reinforcement component; 301. Semi-circular reinforcement plate; 302. Inclined card slot; 303. Longitudinal connecting plate. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1 to 4 , in the embodiment of the present utility model, a dehydration tank for papermaking includes a dehydrator 1 composed of a concave chassis 101, a feed hopper 102, and a material blocking device 103. The feed hopper 102 is fixed to the top of one end of the concave chassis 101, the material blocking device 103 is installed at the other end of the concave chassis 101, and a dehydration component 2 is arranged inside the concave chassis 101. The dehydration component 2 is used for conveying and dehydrating the pulp;

[0028] The dehydration component 2 includes a dehydration tank 201, a driving motor 202, a variable-diameter spiral feeding blade 203, and an inclined guide vane 204;

[0029] The dehydration tank 201 is composed of a plurality of longitudinally distributed longitudinal rods 2011 and a plurality of horizontally distributed rings 2012. The rings 2012 are welded and fixed to the outside of the plurality of longitudinal rods 2011;

[0030] The driving motor 202 is fixedly installed at one end of the concave chassis 101 away from the material blocking device 103. The output end of the driving motor 202 penetrates to the inside of the concave chassis 101 and is fixedly connected to the variable-diameter spiral feeding blade 203. The variable-diameter spiral feeding blade 203 extends through the inner cavity formed by the plurality of longitudinal rods 2011 and penetrates to the other end of the concave chassis 101;

[0031] The inclined deflector 204 is fixed to the outside of the longitudinal rod 2011 distributed above the center line of the drive motor 202 and is arranged to incline downward;

[0032] A reinforcement component 3 is arranged on the outside of the dewatering tank 201, and the reinforcement component 3 is used to reinforce the dewatering tank 201 and the inclined deflector 204;

[0033] A conveying channel through which the variable-diameter spiral feeding blade 203 passes is formed inside the concave chassis 101. The feeding hopper 102 is communicated with the conveying channel, and the output end of the material blocking device 103 forms a seal with the port of the conveying channel.

[0034] In this embodiment: when this dewatering machine 1 is in use, the pulp raw material falls into the inside of the conveying channel through the feeding hopper 102. At this time, the drive motor 202 runs synchronously, and the drive motor 202 drives the variable-diameter spiral feeding blade 203 to rotate. The rotating variable-diameter spiral feeding blade 203 drives the pulp raw material to move towards the inside of the dewatering tank 201. During this process, the extrusion force of the variable-diameter spiral feeding blade 203 on the pulp gradually increases, so that the water in the pulp is extruded out and discharged through the screen holes formed by the longitudinal rod 2011 and the annular ring 2012, thus realizing the dehydration operation of the pulp. The dehydrated pulp is finally conveyed to the front end of the conveying channel and forms an extrusion with the material blocking device 103, pushing open the material blocking device 103, thereby realizing the discharging operation (it should be noted that: the material blocking device 103 is a conventional structure in the existing device, and since it has nothing to do with the scheme improvement, it will not be elaborated here);

[0035] During the operation of the pulp entering the dewatering tank 201 for dehydration, the water flow located below the central axis of the variable-diameter spiral feeding blade 203 can be directly discharged through the screen holes;

[0036] The water flow discharged through the screen holes located above the central axis of the variable-diameter spiral feeding blade 203 will flow downward along the inclined surface of the inclined deflector 204, so as to avoid the phenomenon that the water flow flowing out from the upper screen holes flows into the lower screen holes, resulting in the pulp absorbing water again, and further improving the pulp dehydration efficiency and dehydration effect.

[0037] Please refer specifically to Figures 1 to 4 , two groups of inclined deflectors 204 are symmetrically arranged with the vertical center line of the drive motor 202 as the center, and the inclined deflector 204 is not fixed on the longitudinal rod 2011 at the top;

[0038] Among a group of inclined deflectors 204 on the same side, the tail end of the upper inclined deflector 204 is located above the middle of the lower inclined deflector 204.

[0039] In this embodiment: Through this structure, the water flowing out from the sieve holes on both sides can flow downward along the inclined trajectories of the two groups of inclined guide vanes 204 respectively, realizing the efficient discharge of water;

[0040] And the inclined guide vanes 204 are not fixed on the longitudinal rods 2011 at the topmost part to avoid water accumulation above.

[0041] Please refer specifically to Figures 1 to 4 , the reinforcement assembly 3 includes a semi-circular reinforcement plate 301, an inclined card slot 302, and a longitudinal connection plate 303;

[0042] The inclined card slot 302 is opened on the inner side of the semi-circular reinforcement plate 301, and the longitudinal connection plates 303 are symmetrically fixed at the upper and lower ends of the semi-circular reinforcement plate 301;

[0043] There are two groups of reinforcement assemblies 3, and the two groups of reinforcement assemblies 3 are spliced and sleeved on the outside of the dehydration tank 201. The semi-circular reinforcement plate 301 is attached to the outside of a plurality of longitudinal rods 2011, the inclined card slot 302 is clamped on the outside of the inclined guide vane 204, and the two longitudinal connection plates 303 are attached to each other to realize the reinforcement of the dehydration tank 201 and the variable-diameter spiral feeding piece 203;

[0044] A single group of reinforcement assemblies 3 is provided with a plurality of semi-circular reinforcement plates 301 distributed in the horizontal direction, and mounting holes are opened on the semi-circular reinforcement plates 301 at both ends. Threaded holes matching the mounting holes on the semi-circular reinforcement plates 301 are opened on the inner side of the concave chassis 101.

[0045] In this embodiment: It should be added that: Through holes are opened on the longitudinal connection plates 303. By passing bolts through the through holes and tightening them with nuts, the fixation of the two groups of reinforcement assemblies 3 can be realized;

[0046] The dehydration tank 201 and the inclined guide vane 204 can be fixed and reinforced by the two groups of reinforcement assemblies 3. In this way, the deformation of the dehydration tank 201 and the inclined guide vane 204 can be effectively avoided, thus ensuring the normal operation of the equipment.

[0047] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A dewatering tank for papermaking, comprising a dewatering machine (1) composed of a concave chassis (101), a feed hopper (102), and a material blocking device (103), wherein the feed hopper (102) is fixed to the top of one end of the concave chassis (101), and the material blocking device (103) is installed at the other end of the concave chassis (101), and is characterized in that, An inner side of the concave chassis (101) is provided with a dehydration assembly (2), and the dehydration assembly (2) is used for conveying and dehydrating the pulp; The dehydration assembly (2) includes a dehydration tank (201), a driving motor (202), a variable-diameter spiral feeding piece (203), and an inclined guide piece (204); The dehydration tank (201) is composed of a plurality of longitudinally distributed longitudinal rods (2011) and a plurality of horizontally distributed annular rings (2012), and the annular rings (2012) are fixedly welded to the outer sides of the plurality of longitudinal rods (2011); The driving motor (202) is fixedly installed at one end of the concave chassis (101) away from the material blocking device (103), an output end of the driving motor (202) penetrates to the inner side of the concave chassis (101) and is fixedly connected to the variable-diameter spiral feeding piece (203), and the variable-diameter spiral feeding piece (203) extends through an inner cavity formed by the plurality of longitudinal rods (2011) and penetrates to the other end of the concave chassis (101); The inclined guide piece (204) is fixed to the outer side of the longitudinal rod (2011) distributed above the vertical center line of the driving motor (202) and is arranged to incline downward; A reinforcing assembly (3) is arranged on the outer side of the dehydration tank (201), and the reinforcing assembly (3) is used for reinforcing the dehydration tank (201) and the inclined guide piece (204).

2. The dewatering box for papermaking according to claim 1, characterized in that, Two groups of the inclined guide pieces (204) are symmetrically arranged with the vertical center line of the driving motor (202) as the center, and the inclined guide pieces (204) are not fixed on the longitudinally distributed longitudinal rods (2011) at the topmost part.

3. The dewatering box for papermaking according to claim 2, wherein Among a group of the inclined guide pieces (204) on the same side, the tail end of the upper inclined guide piece (204) is located above the middle part of the lower inclined guide piece (204).

4. A dewatering box for papermaking according to claim 1, characterized in that, The reinforcing assembly (3) includes a semi-circular reinforcing plate (301), an inclined clamping groove (302), and a longitudinal connecting plate (303); The inclined clamping groove (302) is formed in the inner side of the semi-circular reinforcing plate (301), and the longitudinal connecting plates (303) are symmetrically fixed to the upper and lower ends of the semi-circular reinforcing plate (301); Two groups of the reinforcing assemblies (3) are provided, and the two groups of the reinforcing assemblies (3) are spliced and sleeved on the outer side of the dehydration tank (201), the semi-circular reinforcing plate (301) is attached to the outer sides of the plurality of longitudinal rods (2011), the inclined clamping groove (302) is clamped to the outer side of the inclined guide piece (204), and the two groups of longitudinal connecting plates (303) are attached to each other to realize the reinforcement of the dehydration tank (201) and the variable-diameter spiral feeding piece (203).

5. A dewatering box for papermaking according to claim 4, characterized in that, Each group of the reinforcing assemblies (3) is provided with a plurality of semi-circular reinforcing plates (301) distributed in the horizontal direction, and mounting holes are formed in the semi-circular reinforcing plates (301) at both ends, and threaded holes matching the mounting holes on the semi-circular reinforcing plates (301) are formed in the inner side of the concave chassis (101).

6. A dewatering box for papermaking according to claim 1, characterized in that, A conveying channel through which the variable-diameter spiral feeding piece (203) penetrates is formed inside the concave chassis (101), the feeding hopper (102) is communicated with the conveying channel, and an output end of the material blocking device (103) forms a seal with a port of the conveying channel.

Images