Paper mill trench low-concentration tailing separation system
By designing an automated slag removal mechanism and a screw conveyor, combined with a chain conveyor and a shielding plate, the problem of low efficiency in removing tailings from the paper mill's drainage ditch was solved, achieving efficient and automated treatment of tailings and smooth drainage of the ditch.
Patent Information
- Application Number
- CN202422911844.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-28
AI Technical Summary
In the existing technology, the efficiency of removing tailings in the paper mill's drainage ditch is low, and it affects the smooth flow of sewage in the ditch, which cannot meet the wastewater process requirements of the sewage treatment plant.
Design an automated tailings separation system that includes a slag removal mechanism, a slag collection hopper, and a screw conveyor. The system utilizes a chain conveyor and a shielding plate to collect tailings and achieves automated tailings processing through material level monitoring and AGV transfer trolleys.
It achieves efficient and automated separation and treatment of tailings, ensures smooth drainage of sewage ditches, meets the wastewater process requirements of sewage treatment plants, and improves removal efficiency.
Smart Images
Figure CN223535857U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of wastewater treatment technology, and is a low-concentration tailings separation system for paper mill drainage ditches. Background Technology
[0002] For paper mills, water consumption is high, and the wastewater discharged into their ditches includes rainwater from the factory area as well as some wastewater from the living area. This wastewater needs to be treated before being discharged. However, currently, the wastewater in the ditches contains a large amount of residue, and the residue has a complex composition. Therefore, the residue must be removed before entering the wastewater treatment plant for harmless treatment. Although the ditches are equipped with residue removal equipment, a small amount of tailings is still not completely removed. In order to ensure that the wastewater discharged from the ditches into the wastewater treatment plant meets the wastewater treatment process requirements, it is necessary to remove the tailings in the ditches a second time. Currently, the common practice is to set up grates in the ditches for interception, and then manually lift them up and use a net to scoop up and remove the intercepted tailings. However, this method is inefficient and will affect the smooth flow of sewage in the ditches. Utility Model Content
[0003] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a paper mill ditch low-concentration tailings separation system with simple structure, high degree of automation, and continuous slag removal capability.
[0004] To achieve the above objectives, the technical solution of this utility model is as follows: A low-concentration tailings separation system for paper mill drainage ditches includes a drainage ditch body, a tailings removal mechanism, a tailings collection hopper, and a screw conveyor. A settling trough is recessed on the bottom wall of the drainage ditch body. The tailings removal mechanism is vertically arranged, and its feed end extends into the settling trough. The tailings collection hopper is vertically arranged below the discharge end of the tailings removal mechanism. The discharge end of the tailings collection hopper is connected to the feed end of the screw conveyor. The tailings removal mechanism is used to collect the tailings flowing through the settling trough and send them upward into the tailings collection hopper. The screw conveyor is used to send the tailings out of the tailings collection hopper.
[0005] The beneficial effects of the above technical solution are as follows: the tailings in the ditch can be scooped up by the slag-collecting mechanism at the settling trough and placed into the slag-collecting hopper. When the slag-collecting hopper is almost full, the tailings in the slag-collecting hopper can be concentrated and sent out by the screw conveyor. At this time, a trolley can be used to receive the tailings sent out by the screw conveyor and push it to the solid waste station for processing.
[0006] The slag removal mechanism described in the above technical solution includes a chain mesh conveyor, which has a horizontal conveying section and a vertical conveying section. The horizontal conveying section is arranged in the settling tank along the front-to-back direction. The vertical conveying section is located behind the horizontal conveying section and is inclined backward and upward to extend out of the trench body. The upper end of the horizontal conveying section constitutes the feed end of the slag removal mechanism, and the upper end of the vertical conveying section constitutes the discharge end of the slag removal mechanism.
[0007] The beneficial effect of the above technical solution is that the horizontal conveying section of the chain mesh conveyor receives the tailings and sends them backward and upward from the vertical conveying section, where they fall into the slag collection hopper for collection.
[0008] In the above technical solution, the conveyor chain of the chain mesh conveyor is provided with multiple scrapers at uniform intervals in the circumferential direction, and the scrapers are arranged in the middle of the conveyor chain mesh along the width direction of the conveyor chain mesh.
[0009] The beneficial effect of the above technical solution is that the scraper on the conveyor chain can lift the tailings collected on the conveyor chain upward into the slag collection hopper.
[0010] The chain mesh conveyor described in the above technical solution also includes three spreading rollers and two pressing half rollers. The three spreading rollers are all arranged inside the ring of the conveyor chain mesh, and the two pressing half rollers are distributed at intervals in the left and right direction and are arranged on both sides of the bend in the middle of the upper part of the conveyor chain mesh. The two pressing half rollers and the three spreading rollers together spread and bend the conveyor chain mesh to divide it into a horizontal conveying section and a vertical conveying section.
[0011] The beneficial effects of the above technical solution are as follows: by setting two downward pressing half rollers to bend the upper part of the conveyor chain mesh, the upper piece of the conveyor chain mesh can be bent without affecting the normal passage of the scraper. Furthermore, by setting three spreading rollers, one of which bends the lower piece of the conveyor chain mesh inside the conveyor chain mesh.
[0012] In the above technical solution, a shielding plate is provided at the front end and both sides of the settling trough opening. The shielding plate extends from one side of the middle of the settling trough to the upper side of the corresponding side of the horizontal conveying section to cover the gap between the conveyor chain and the side wall of the settling trough.
[0013] The beneficial effect of the above technical solution is that by setting up a shielding plate, the tailings carried in the water in the ditch can be better collected by the horizontal conveying section, instead of falling into the settling trough through the sides of the horizontal conveying section.
[0014] In the above technical solutions, the shielding plates are all inclined, with the side above the horizontal conveying section tilted downwards.
[0015] The beneficial effect of the above technical solution is that it makes the shielding plate more effective in guiding the tailings.
[0016] The vertical conveying section described in the above technical solution is tilted backward at an angle of 30-60°.
[0017] The beneficial effect of the above technical solution is that it provides sufficient space below the vertical conveying section for placing the slag collection hopper.
[0018] The above technical solution also includes a material level monitoring element, a controller, and an alarm. The material level monitoring element is installed next to the slag collection hopper and is used to monitor whether the slag collection hopper is full. The material level monitoring element and the alarm are both electrically connected to the controller.
[0019] The beneficial effect of the above technical solution is that when the material level monitoring element detects that the tailings in the slag collection hopper is approaching full, the alarm can sound to warn the user.
[0020] The alarm described in the above technical solution is an audible and visual alarm.
[0021] The beneficial effect of the above technical solution is that it enables staff to receive alarm signals from the alarm device more promptly.
[0022] The above technical solution also includes an AGV transfer trolley, and both the screw conveyor and the AGV transfer trolley are electrically connected to the controller.
[0023] The beneficial effects of the above technical solution are as follows: it enables the AGV transfer trolley, the screw conveyor and the material level monitoring element to work together. When the material level monitoring element detects that the tailings in the slag collection hopper is close to full, the controller can control the screw conveyor to send the tailings in the slag collection hopper to the AGV transfer trolley, and the AGV transfer trolley will then send the tailings to the solid waste station for processing. Attached Figure Description
[0024] Figure 1 This is a side view of the paper mill ditch low-concentration tailings separation system described in this embodiment of the utility model;
[0025] Figure 2 This is a side view of the chain conveyor described in an embodiment of the present utility model;
[0026] Figure 3 This is a top view of the horizontal conveying section within the settling tank in an embodiment of the present invention;
[0027] Figure 4 This is a schematic diagram showing that the horizontal conveying section and the edge of the settling trough are covered by a shielding plate in an embodiment of this utility model;
[0028] Figure 5 This is a cross-sectional view of the two shielding plates located on both sides in an embodiment of this utility model;
[0029] Figure 6 This is a schematic diagram showing the coordination of the material level monitoring element, slag collection hopper, AGV transfer trolley, and screw conveyor in the embodiments of this utility model;
[0030] Figure 7 This is a schematic diagram of the electrical connections of the controller described in an embodiment of this utility model.
[0031] In the diagram: 1. Trench body; 11. Settling trough; 2. Slag removal mechanism; 21. Chain mesh conveyor; 21a. Horizontal conveying section; 21b. Vertical conveying section; 211. Conveyor chain mesh; 212. Scraper; 213. Spreading roller; 214. Lower pressing half roller; 22. Shielding plate; 3. Slag collection hopper; 4. Screw elevator; 5. Material level monitoring element; 6. Controller; 7. Alarm; 8. AGV transfer trolley. Detailed Implementation
[0032] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will be more clearly described in light of the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.
[0033] like Figure 1 As shown, this embodiment provides a low-concentration tailings separation system for paper mill drainage ditches, including a drainage ditch body 1, a tailings scooping mechanism 2, a tailings collection hopper 3, and a screw conveyor 4. A settling trough 11 is recessed on the bottom wall of the drainage ditch body 1. The tailings scooping mechanism 2 is vertically positioned, with its feed end extending into the settling trough 11. The tailings collection hopper 3 is vertically positioned below the discharge end of the tailings scooping mechanism 2, and its discharge end is connected to the feed end of the screw conveyor 4. The tailings scooping mechanism 2 collects the tailings flowing through the settling trough 11 and sends them upwards into the tailings collection hopper 3. The screw conveyor 4 sends the tailings out of the tailings collection hopper 3. This allows the tailings in the drainage ditch body to be scooped up by the tailings scooping mechanism at the settling trough and sent into the tailings collection hopper. When the tailings collection hopper is nearly full, the screw conveyor can collect and send the tailings out of the hopper. At this point, a trolley can be used to receive the tailings sent out by the screw conveyor and push it to a solid waste station for processing.
[0034] like Figure 2As shown, the slag removal mechanism 2 in the above technical solution includes a chain mesh conveyor 21. The chain mesh conveyor 21 has a horizontal conveying section 21a and a vertical conveying section 21b. The horizontal conveying section 21a is arranged in the settling tank 11 in the front-to-back direction. The vertical conveying section 21b is located behind the horizontal conveying section 21a and is inclined backward and upward to extend outside the trench body 1. The upper end of the horizontal conveying section 21a constitutes the feed end of the slag removal mechanism 2, and the upper end of the vertical conveying section 21b constitutes the discharge end of the slag removal mechanism 2. In this way, the horizontal conveying section of the chain mesh conveyor receives the tail slag and sends the tail slag backward and upward from the vertical conveying section, where it falls into the slag collection hopper for collection.
[0035] like Figures 1-4 As shown in the diagram, in the above technical solution, the conveyor chain 21 of the chain conveyor 21 has multiple scrapers 212 evenly spaced in a circumferential direction. The scrapers 212 are positioned in the middle of the conveyor chain 211 along its width, thus enabling the scrapers on the conveyor chain to lift the collected tailings upwards into the slag collection hopper. In this embodiment, the linear speed of the conveyor chain on the chain conveyor can be 2-5 m / min, and its continuous slow rotation is used to deliver the trapped tailings into the slag collection trough.
[0036] like Figure 2 and Figure 3 As shown, the chain mesh conveyor 21 in the above technical solution also includes three spreading rollers 213 and two pressing half rollers 214. The three spreading rollers 213 are all arranged inside the loop of the conveyor chain mesh 211. The two pressing half rollers 214 are distributed at intervals in the left and right direction and are arranged on both sides of the bend in the upper middle part of the conveyor chain mesh 211. The two pressing half rollers 214 and the three spreading rollers 213 together spread and bend the conveyor chain mesh 211 to divide it into horizontal conveyor sections. Section 21a and vertical conveying section 21b are bent at the upper bend of the conveyor chain mesh by setting two downward pressing half rollers. This can bend the upper piece of the conveyor chain mesh without affecting the normal passage of the scraper. Three spreading rollers are set, one of which bends the lower piece of the conveyor chain mesh inside the conveyor chain mesh (the upper piece of the conveyor chain mesh is located in the area above the two spreading rollers at both ends, and the lower piece of the conveyor chain mesh is located in the area below the two spreading rollers at both ends). Preferably, the spreading roller at the upper end can be driven by a motor.
[0037] like Figure 4As shown in the above technical solution, a shielding plate 22 is provided at the front end and both sides of the trough opening of the settling tank 11. The shielding plate 22 extends from one side of the middle of the settling tank 11 to the upper side of the corresponding side of the horizontal conveying section 21a, so as to cover the gap between the conveying chain net 211 and the side wall of the settling tank 11. By setting the shielding plate, the tailings carried in the water in the ditch can be better collected by the horizontal conveying section, and will not fall into the settling tank through the sides of the horizontal conveying section.
[0038] like Figure 5 As shown, the shielding plates 22 in the above technical solution are all inclined, with the side above the horizontal conveying section 21a inclined downwards, so that the shielding plates have a better effect on guiding the tailings.
[0039] In the above technical solution, the vertical conveying section 21b is tilted backward at an angle of 30-60° (it can be 30°, 45° or 60°), so that there is enough space below the vertical conveying section for the slag collection hopper to be placed.
[0040] In this embodiment, the rear sidewall of the settling tank can be inclined upwards and backwards to form a slope, which can prevent sewage from flowing more smoothly when passing behind the settling tank.
[0041] like Figure 6 and Figure 7 As shown, the above technical solution also includes a material level monitoring element 5, a controller 6, and an alarm 7. The material level monitoring element 5 is located next to the slag collection hopper 3 and is used to monitor whether the slag collection hopper 3 is full. The material level monitoring element 5 and the alarm 7 are both electrically connected to the controller 6. This allows the alarm to sound an alarm when the material level monitoring element detects that the tailings in the slag collection hopper is approaching full.
[0042] In this embodiment, the material level monitoring element can be a radar level gauge, which is installed above the slag collection hopper to detect whether the slag collection hopper is full. In this embodiment, the controller can be an ARM series microcontroller.
[0043] The alarm 7 described in the above technical solution is an audible and visual alarm, which enables staff to receive alarm signals from the alarm more promptly.
[0044] The above technical solution also includes an AGV transfer trolley 8. Both the screw conveyor 4 and the AGV transfer trolley 8 are electrically connected to the controller 6, so that the AGV transfer trolley 8, the screw conveyor 4 and the material level monitoring element 5 can be linked. When the material level monitoring element detects that the tailings in the slag collection hopper is close to full, the controller can control the screw conveyor 4 to run to send the tailings in the slag collection hopper to the AGV transfer trolley, and the AGV transfer trolley will then send the tailings to the solid waste station for processing.
[0045] In this embodiment, the ACV transfer trolley and the controller are connected via wireless communication (which may be a 5G communication module). The movement trajectory of the ACV transfer trolley (which has a hopper on top, which is existing technology and will not be described in detail here) is preset to go back and forth between the standby position (i.e., the discharge port of the screw conveyor 4) and the unloading position (the unloading point of the solid waste station). The controller mainly sends a departure command (departs after being filled with material) or a return command (returns to the standby position after unloading) to the ACV transfer trolley.
[0046] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.
Claims
1. A low-concentration tailings separation system for paper mill drainage ditches, characterized in that, The system includes a trench body (1), a slag removal mechanism (2), a slag collection hopper (3), and a screw elevator (4). The bottom wall of the trench body (1) is recessed with a settling trough (11). The slag removal mechanism (2) is vertically arranged, and its feed end extends into the settling trough (11). The slag collection hopper (3) is vertically arranged below the discharge end of the slag removal mechanism (2). The discharge end of the slag collection hopper (3) is connected to the feed end of the screw elevator (4). The slag removal mechanism (2) is used to collect the tail slag flowing through the settling trough (11) and send it upward into the slag collection hopper (3). The screw elevator (4) is used to send the tail slag in the slag collection hopper (3) out.
2. The low-concentration tailings separation system for paper mill drainage ditches according to claim 1, characterized in that, The slag removal mechanism (2) includes a chain mesh conveyor (21), which has a horizontal conveying section (21a) and a vertical conveying section (21b). The horizontal conveying section (21a) is arranged in the settling tank (11) in the front-back direction. The vertical conveying section (21b) is located behind the horizontal conveying section (21a) and is inclined backward and upward to extend out of the trench body (1). The upper end of the horizontal conveying section (21a) constitutes the feed end of the slag removal mechanism (2), and the upper end of the vertical conveying section (21b) constitutes the discharge end of the slag removal mechanism (2).
3. The paper mill ditch low-concentration tailings separation system according to claim 2, characterized in that, The conveyor chain (21) of the chain conveyor (21) has multiple scrapers (212) evenly spaced in a circumferential direction. The scrapers (212) are arranged in the middle of the conveyor chain (211) along the width direction of the conveyor chain (211).
4. The low-concentration tailings separation system for paper mill drainage ditches according to claim 3, characterized in that, The chain mesh conveyor (21) also includes three spreading rollers (213) and two pressing half rollers (214). The three spreading rollers (213) are all arranged inside the ring of the conveyor chain mesh (211). The two pressing half rollers (214) are distributed at intervals in the left and right direction and are arranged on both sides of the bend in the middle of the upper part of the conveyor chain mesh (211). The two pressing half rollers (214) and the three spreading rollers (213) together spread and bend the conveyor chain mesh (211) to divide it into a horizontal conveying section (21a) and a vertical conveying section (21b).
5. The paper mill ditch low-concentration tailings separation system according to claim 3, characterized in that, A shielding plate (22) is provided at the front end and both sides of the trough (11). The shielding plate (22) extends from one side of the middle of the trough (11) to the upper side of the corresponding side of the horizontal conveying section (21a) to cover the gap between the conveying chain net (211) and the side wall of the trough (11).
6. The low-concentration tailings separation system for paper mill drainage ditches according to claim 5, characterized in that, The shielding plates (22) are all inclined, with the side above the horizontal conveying section (21a) tilted downwards.
7. The paper mill ditch low-concentration tailings separation system according to claim 2, characterized in that, The vertical conveying section (21b) is tilted backward at an angle of 30-60°.
8. The low-concentration tailings separation system for paper mill drainage ditches according to claim 1, characterized in that, It also includes a material level monitoring element (5), a controller (6) and an alarm (7). The material level monitoring element (5) is located next to the slag collection hopper (3) and is used to monitor whether the slag collection hopper (3) is full. The material level monitoring element (5) and the alarm (7) are both electrically connected to the controller (6).
9. The low-concentration tailings separation system for paper mill drainage ditches according to claim 8, characterized in that, The alarm (7) is an audible and visual alarm.
10. The paper mill ditch low-concentration tailings separation system according to claim 8, characterized in that, It also includes an AGV transfer trolley (8), and both the spiral elevator (4) and the AGV transfer trolley (8) are electrically connected to the controller (6).