Non-thermal efficient sludge dewatering system

Abstract

The utility model discloses a non-thermal efficient sludge dewatering system which comprises a distributor and a mesh belt conveyor arranged below the distributor, an upper layer filter cloth winding drum and a lower layer filter cloth winding drum are arranged on the left side and the right side of the distributor, and a compression roller is arranged at the output end of the mesh belt conveyor; a filter pressing frame capable of horizontally moving is arranged below the output end of the mesh belt conveyor, a plurality of vertical extrusion plates distributed left and right at intervals are elastically installed in the filter pressing frame, a water outlet hole is formed in the bottom of the filter pressing frame, and an extrusion air cylinder is arranged on the left side of the filter pressing frame; the leftmost vertical extrusion plate is connected with a linkage support, and the linkage support is provided with a guide roller, an upper winding roller and a lower winding roller. Compared with a traditional spin-drying mode, the system has the advantages of being small in energy consumption, free of heat energy waste, capable of running automatically, continuously and stably, low in cost and high in dehydration efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge dehydration, in particular to a non-thermal sludge high-efficiency dehydration system. Background Art

[0002] Sludge dewatering is the process of removing moisture from flowing primary, concentrated, or digested sludge, converting it into semi-solid or solid sludge blocks. Currently, the most common industrial dewatering method involves spinning the sludge, supplemented by heating and drying to further remove moisture. However, this process not only consumes a lot of energy but also generates a large amount of heat that is directly discharged, resulting in energy waste. Therefore, a non-thermal sludge treatment method is needed to efficiently dehydrate the sludge without heating. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a non-thermal sludge high-efficiency dehydration system, aiming to solve the technical problems in the prior art that the traditional spin-drying method has high energy consumption and the direct discharge of the generated heat will also lead to energy waste.

[0004] The technical solution of the utility model is: a non-thermal sludge high-efficiency dewatering system, comprising a distributor, a mesh belt conveyor arranged below the distributor, an upper filter cloth drum and a lower filter cloth drum are respectively provided on the left and right sides of the distributor, a pressing roller is provided at the output end of the mesh belt conveyor, the upper filter cloth of the upper filter cloth drum and the lower filter cloth of the lower filter cloth drum sandwich the sludge and are conveyed to the pressing roller for filtration through the mesh belt conveyor; a horizontally movable filter press is provided below the output end of the mesh belt conveyor A filter press frame is provided in which a plurality of vertical squeezing plates are elastically installed at intervals on the left and right sides. A water outlet is provided at the bottom of the filter press frame and an squeezing cylinder is provided on the left side of the filter press frame. The two layers of filter cloth containing the sludge can fall into the filter press frame, be separated and placed by the vertical squeezing plates, and be filtered once by the squeezing cylinder. A linkage bracket is also connected to the vertical squeezing plate on the far left, on which a guide roller, an upper winding roller, and a lower winding roller are installed. The upper filter cloth and the lower filter cloth are recovered by the upper winding roller and the lower winding roller respectively.

[0005] Furthermore, the distributor described in the utility model includes a material box, in which a left squeezing roller and a right squeezing roller are spaced apart on the left and right sides. The left squeezing roller and the right squeezing roller are connected by a gear transmission, and either squeezing roller is driven to rotate by a motor. The outlet at the bottom of the material box is in a contracted shape.

[0006] Furthermore, the utility model has two pressing rollers, which are respectively arranged on the upper and lower sides of the upper mesh belt of the mesh belt conveyor, and the two pressing rollers cooperate to press the two layers of filter cloth that clamp the sludge.

[0007] Furthermore, the filter press frame in the utility model is driven by a linear module to move linearly, and slide grooves are provided on the inner walls on both sides of the filter press frame. Sliding blocks are provided on both sides of each vertical extrusion plate, and the sliding blocks on both sides of the vertical extrusion plate are respectively slidably installed in the slide grooves on both sides of the filter press frame.

[0008] Furthermore, in the utility model, springs are provided between two adjacent vertical extrusion plates and between the left and right vertical extrusion plates and the inner wall of the filter press frame. The springs are arranged in the slide grooves on both sides. The two ends of the spring between the two adjacent vertical extrusion plates are respectively fixedly connected to the sliding blocks of the vertical extrusion plates. The two ends of the spring between the rightmost vertical extrusion plate and the right inner wall of the filter press frame are respectively fixedly connected to the sliding block of the vertical extrusion plate and the right inner wall of the filter press frame. One end of the spring between the leftmost vertical extrusion plate and the left inner wall of the filter press frame is fixedly connected to the sliding block of the vertical extrusion plate, and the other end is pressed against the left inner wall of the filter press frame.

[0009] Furthermore, the extrusion cylinder in the present invention is installed on a fixed seat, and a through hole for the output shaft of the extrusion cylinder to penetrate is provided on the left side of the filter press frame.

[0010] Furthermore, the guide roller in the present invention is rotatably arranged above the vertical extrusion plate on the far left, and the upper winding roller and the lower winding roller are arranged up and down on the left side of the guide roller; a scraping mechanism is provided between the upper winding roller and the lower winding roller, and the scraping mechanism includes an upper scraper plate and several lower scraper blocks connected to the bottom of the upper scraper plate at intervals, and the upper scraper plate is fixedly mounted on the linkage bracket, the top of the upper scraper plate is in contact with the upper filter cloth, and the bottom of the lower scraper block is in contact with the lower filter cloth.

[0011] Furthermore, a material receiving box or a mud discharge conveyor belt is provided below the lower winding roller in the utility model.

[0012] Compared with the prior art, the utility model has the following advantages: the utility model can utilize the distributor to automatically distribute the sludge and evenly spread the sludge on the filter cloth. The sludge is tightly sandwiched by two layers of filter cloth. When passing through the pressing roller first, the pressing roller is utilized to further evenly spread the sludge and realize preliminary squeezing and dehydration. Then, with the cooperation of the mesh belt conveyor and the filter press frame, the filter cloth with the sludge is folded and stored in the filter press frame. The squeezing and dehydration are carried out once by the squeezing cylinder. The dehydrated sludge is received by the receiving box or output by the mud conveyor belt, and the two layers of filter cloth are recovered separately. Compared with the traditional spin-drying method, the energy consumption of the system of the utility model is small, there is no waste of heat energy, it can operate automatically, continuously and stably, the cost is low, and the dehydration efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the system structure of the present utility model (the linkage bracket is not shown);

[0014] Figure 2 This is a schematic diagram of the working state of the utility model (the linkage bracket is not drawn);

[0015] Figure 3 It is a three-dimensional diagram of the utility model;

[0016] Figure 4 It is a three-dimensional diagram of the vertical extrusion plate described in the present utility model;

[0017] Figure 5 for Figure 4 A partial enlarged schematic diagram of part A in the middle;

[0018] Figure 6 It is a schematic diagram of the specific arrangement of the scraping mechanism described in the present utility model.

[0019] Among them: 1. distributor; 101. material box; 101a. outlet; 102. left squeezing roller; 103. right squeezing roller; 2. mesh belt conveyor; 3. upper filter cloth reel; 3a. upper filter cloth; 4. lower filter cloth reel; 4a. lower filter cloth; 5. pressing roller; 6. filter press frame; 6a. chute; 6b. through hole; 7. vertical squeezing plate; 8. water outlet; 9. squeezing cylinder; 10. linkage bracket; 11. guide roller; 12. upper winding roller; 13. lower winding roller; 14. linear module; 15. sliding block; 16. spring; 17. fixed seat; 18. scraper mechanism; 1801. upper scraper plate; 1802. lower scraper block. DETAILED DESCRIPTION

[0020] The following is a detailed description of the specific implementation of the present invention with reference to the accompanying drawings.

[0021] Example:

[0022] The following is a specific embodiment of a non-thermal sludge high-efficiency dewatering system of the present invention, referring to Figures 1 to 3 The sludge distributor 1 comprises a hopper 101, within which a left squeeze roller 102 and a right squeeze roller 103 are spaced apart. The left and right squeeze rollers 102 and 103 are located outside the hopper 101 and connected by a gear transmission. A motor drives one squeeze roller, which in turn drives the other via a gear transmission. Sludge flows downward through the gap between the left and right squeeze rollers 102 and 103. The outlet 101a at the bottom of the hopper 101 is constricted to facilitate even spreading of the sludge.

[0023] A mesh belt conveyor 2 is provided below the distributor 1, and an upper filter cloth reel 3 and a lower filter cloth reel 4 are provided on the left and right sides of the distributor 1 respectively. The upper filter cloth 3a of the upper filter cloth reel 3 and the lower filter cloth 4a of the lower filter cloth reel 4 are used to cooperate in enclosing sludge.

[0024] Two pressing rollers 5 are installed at the output end of the mesh belt conveyor 2. These rollers 5 are located on the upper and lower sides of the upper mesh belt of the mesh belt conveyor 2. The two pressing rollers 5 work together to compact the two layers of filter cloth enclosing the sludge. As the mesh belt conveyor 2 conveys the sludge, the pressing rollers 5 rotate in unison, evenly flattening the sludge and achieving initial squeezing and dehydration.

[0025] A filter press frame 6 is provided below the output end of the mesh belt conveyor 2. Linear modules 14 are provided on both sides of the bottom of the filter press frame 6. The filter press frame 6 is synchronously driven by two linear modules 14 to move linearly. A plurality of vertical extrusion plates 7 are provided in the filter press frame 6 at intervals. The structure of the vertical extrusion plates 7 is as follows: Figure 4 、 Figure 5 As shown, sliding blocks 15 are respectively provided on both sides of the vertical extrusion plate 7, and the width of the sliding blocks 15 is smaller than the width of the vertical extrusion plate 7. Horizontally extending slide grooves 6a are respectively provided on the inner walls on both sides of the filter press frame 6. The sliding blocks 15 on both sides of the vertical extrusion plate 7 are respectively slidably installed in the slide grooves 6a on both sides of the filter press frame 6, and the vertical extrusion plate 7 can slide left and right.

[0026] Springs 16 are provided between two adjacent vertical extrusion plates 7 and between the leftmost and rightmost vertical extrusion plates 7 and the inner wall of the filter press frame 6. The springs 16 are arranged in the chute 6a on both sides. Specifically, the two ends of the springs 16 between two adjacent vertical extrusion plates 7 are respectively fixedly connected to the sliding blocks 15 of the two vertical extrusion plates 7, so that all the vertical extrusion plates 7 are connected as a whole. The two ends of the spring 16 between the rightmost vertical extrusion plate 7 and the right inner wall of the filter press frame 6 are respectively fixedly connected to the sliding block 15 of the vertical extrusion plate 7 and the right inner wall of the filter press frame 6, so that the entire vertical extrusion plate 7 is connected to the right inner wall of the filter press frame 6. One end of the spring 16 between the leftmost vertical extrusion plate 7 and the left inner wall of the filter press frame 6 is fixedly connected to the sliding block 15 of the vertical extrusion plate 7, and the other end is pressed against the left inner wall of the filter press frame 6, so that the entire vertical extrusion plate 7 and the left inner wall of the filter press frame 6 can be separated from each other.

[0027] The bottom of the filter press frame 6 is provided with a plurality of water outlet holes 8 for draining water during sludge dehydration.

[0028] An extrusion cylinder 9 is mounted on a fixed base 17 on the left side of the filter press frame 6. A through-hole 6b is provided on the left side of the filter press frame 6, through which the output shaft of the extrusion cylinder 9 passes. The two layers of filter cloth enclosing the sludge can fall into the filter press frame 6 and be separated by a vertical extrusion plate 7. The output shaft of the extrusion cylinder 9 can penetrate through the through-hole 6b and enter the filter press frame 6 to squeeze the vertical extrusion plate 7, thereby dewatering the sludge.

[0029] The leftmost vertical extrusion plate 7 is also fixedly connected to a linkage bracket 10, on which a guide roller 11, an upper winding roller 12, and a lower winding roller 13 are installed. The guide roller 11 is rotatably arranged above the leftmost vertical extrusion plate 7, and the upper winding roller 12 and the lower winding roller 13 are arranged on the left side of the guide roller 11. Figure 3 、 Figure 6 The two layers of filter cloth wrapped with sludge are wound around the guide roller 11, the upper filter cloth 3a is wound by the upper winding roller 12, and the lower filter cloth 4a is wound by the lower winding roller 13.

[0030] Reference Figure 6 A scraping mechanism 18 is provided between the upper winding roller 12 and the lower winding roller 13. The scraping mechanism 18 includes an upper scraper plate 1801, which is fixedly mounted on the linkage bracket 10. The top of the upper scraper plate 1801 contacts the upper filter cloth 3a, scraping away any sludge remaining on the upper filter cloth 3a. A plurality of spaced lower scraper blocks 1802 are connected to the bottom of the upper scraper plate 1801. The bottoms of the lower scraper blocks 1802 contact the lower filter cloth 4a, allowing sludge to automatically fall off when the lower filter cloth 4a is reeled in. The lower scraper blocks 1802 loosen and facilitate sludge removal.

[0031] In addition, although not shown in the figure, a receiving box or a mud conveyor belt is provided below the lower winding roller 13, and the detached sludge can be received by the receiving box or discharged by the mud conveyor belt.

[0032] When the utility model is working, the upper filter cloth reel 3 releases the upper filter cloth 3a, and the lower filter cloth reel 4 releases the lower filter cloth 4a. The distributor 1 evenly spreads the sludge on the lower filter cloth 4a. As the mesh belt conveyor 2 conveys, the upper filter cloth 3a covers the sludge and cooperates with the lower filter cloth 4a to clamp the sludge. The two layers of filter cloths clamping the sludge first pass through the pressing roller 5. The pressing roller 5 rotates in coordination to evenly flatten the sludge and achieve preliminary extrusion dehydration. Then, the filter cloth clamping the sludge falls to the leftmost vertical extrusion plate 7 of the filter press frame 6 and between the adjacent vertical extrusion plates 7 under the conveyance of the mesh belt conveyor 2, as shown in FIG. Figure 1 As shown, the linear module 14 then drives the filter press frame 6 to move to the left, so that the filter cloth containing the sludge is folded in sequence and falls between every two adjacent vertical squeezing plates 7, until it finally falls between the rightmost vertical squeezing plate 7 and the right inner wall of the filter press frame 6. The filter press frame 6 stops moving, and the distributor 1, mesh belt conveyor 2, upper filter cloth reel 3, and lower filter cloth reel 4 stop operating. Figure 2 、 Figure 3As shown. Then, the squeezing cylinder 9 is used to dehydrate the sludge. The output shaft of the squeezing cylinder 9 extends out, passes through the through hole 6b, enters the filter press frame 6, and squeezes the vertical squeezing plate 7 to the right. All the vertical squeezing plates 7 are squeezed to the rightmost side of the filter press frame 6 as a whole, thereby achieving the squeezing and dehydration of the sludge. When the vertical squeezing plates 7 move, the linkage bracket 10, the guide roller 11, the upper winding roller 12, and the lower winding roller 13 move synchronously, and the dewatered sewage is discharged from the water outlet 8 at the bottom of the filter press frame 6. After the dehydration is completed, the squeezing cylinder 9 is reset, and the vertical squeezing plate 7 is reset under the action of the spring 16. The linkage bracket 10, the guide roller 11, the upper winding roller 12, and the lower winding roller 13 are reset synchronously. The state at this time is still Figure 3 As shown, the upper filter cloth 3a and the lower filter cloth 4a are recovered by the upper winding roller 12 and the lower winding roller 13 respectively. The upper winding roller 12 and the lower winding roller 13 can be driven by motors to rotate. With the cooperation of the scraping mechanism 18, the sludge falls off the filter cloth and is received by the material receiving box or discharged by the mud conveyor belt. As the filter cloth containing the sludge is continuously rolled out from the filter press frame 6, the filter press frame 6 moves to the right until it is reset. Then the distributor 1, mesh belt conveyor 2, upper filter cloth reel 3, and lower filter cloth reel 4 continue to operate. The filter cloth containing the sludge is transported by the mesh belt conveyor 2 and continues to fall between the vertical extrusion plate 7 on the leftmost side of the filter press frame 6 and the adjacent vertical extrusion plate 7, as shown in FIG. Figure 1 As shown, the above steps are then repeated cyclically to achieve sludge dehydration.

[0033] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the present invention and implement it accordingly. They are not intended to limit the scope of protection of the present invention. Any modifications based on the spirit of the main technical solution of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A non-thermal sludge high-efficiency dewatering system, characterized by: The invention comprises a distributor (1) and a mesh belt conveyor (2) provided below the distributor (1); an upper filter cloth drum (3) and a lower filter cloth drum (4) are provided on the left and right sides of the distributor (1), respectively; a pressing roller (5) is provided at the output end of the mesh belt conveyor (2); the upper filter cloth (3a) of the upper filter cloth drum (3) and the lower filter cloth (4a) of the lower filter cloth drum (4) enclose sludge and are conveyed to the pressing roller (5) for filtration through the mesh belt conveyor (2); a horizontally movable filter press frame (6) is provided below the output end of the mesh belt conveyor (2); a plurality of left and right spacers are elastically installed in the filter press frame (6). The filter press frame (6) is provided with a water outlet (8) at the bottom thereof, and an extrusion cylinder (9) is provided on the left side thereof. The two layers of filter cloth containing sludge can fall into the filter press frame (6), be separated and placed by the vertical extrusion plates (7), and be filtered once by the extrusion cylinder (9); the vertical extrusion plate (7) on the far left is also connected to a linkage bracket (10), and a guide roller (11), an upper winding roller (12), and a lower winding roller (13) are installed on the linkage bracket (10); the upper filter cloth (3a) and the lower filter cloth (4a) are respectively recovered by the upper winding roller (12) and the lower winding roller (13).

2. The non-thermal sludge high-efficiency dewatering system according to claim 1, characterized in that: The distributor (1) comprises a material box (101), wherein a left squeezing roller (102) and a right squeezing roller (103) are spaced apart on the left and right sides of the material box (101), the left squeezing roller (102) and the right squeezing roller (103) are connected via a gear transmission, and either squeezing roller is driven to rotate by a motor, and an outlet (101a) at the bottom of the material box (101) is in a contracted shape.

3. The non-thermal sludge high-efficiency dewatering system according to claim 1, characterized in that: There are two pressing rollers (5), which are respectively arranged on the upper and lower sides of the upper mesh belt of the mesh belt conveyor (2). The two pressing rollers (5) cooperate to press the two layers of filter cloth that clamp the sludge.

4. The non-thermal sludge high-efficiency dewatering system according to claim 1, characterized in that: The filter press frame (6) is driven by a linear module (14) to move linearly. Slide grooves (6a) are provided on the inner walls of both sides of the filter press frame (6). Sliding blocks (15) are provided on both sides of each vertical extrusion plate (7). The sliding blocks (15) on both sides of the vertical extrusion plate (7) are respectively slidably installed in the slide grooves (6a) on both sides of the filter press frame (6).

5. The non-thermal sludge high-efficiency dewatering system according to claim 4, characterized in that: Springs (16) are provided between two adjacent vertical extrusion plates (7) and between the leftmost and rightmost vertical extrusion plates (7) and the inner wall of the filter press frame (6). The springs (16) are provided in the chute (6a) on both sides. The two ends of the spring (16) between the two adjacent vertical extrusion plates (7) are respectively fixedly connected to the sliding block (15) of the vertical extrusion plate (7). The two ends of the spring (16) between the rightmost vertical extrusion plate (7) and the right inner wall of the filter press frame (6) are respectively fixedly connected to the sliding block (15) of the vertical extrusion plate (7) and the right inner wall of the filter press frame (6). One end of the spring (16) between the leftmost vertical extrusion plate (7) and the left inner wall of the filter press frame (6) is fixedly connected to the sliding block (15) of the vertical extrusion plate (7), and the other end is pressed against the left inner wall of the filter press frame (6).

6. The non-thermal sludge high-efficiency dewatering system according to claim 5, characterized in that: The extrusion cylinder (9) is mounted on a fixing seat (17), and a through hole (6b) for the output shaft of the extrusion cylinder (9) to penetrate is provided on the left side of the filter press frame (6).

7. The non-thermal sludge high-efficiency dewatering system according to claim 1, characterized in that: The guide roller (11) is rotatably arranged above the leftmost vertical extrusion plate (7), and the upper winding roller (12) and the lower winding roller (13) are arranged on the left side of the guide roller (11); a scraping mechanism (18) is provided between the upper winding roller (12) and the lower winding roller (13), and the scraping mechanism (18) includes an upper scraping plate (1801) and a plurality of lower scraping blocks (1802) connected to the bottom of the upper scraping plate (1801) and arranged at intervals. The upper scraping plate (1801) is fixedly installed on the linkage bracket (10), and the top of the upper scraping plate (1801) is in contact with the upper filter cloth (3a), and the bottom of the lower scraping block (1802) is in contact with the lower filter cloth (4a).

8. The non-thermal sludge high-efficiency dewatering system according to claim 1, characterized in that: A material receiving box or a mud discharge conveyor belt is provided below the lower winding roller (13).

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