Filter cloth for high-pressure dewatering of sludge

Abstract

The application discloses a filter cloth for sludge high-pressure dewatering, which is provided with a connecting assembly at the end of an inner filter layer, a U-shaped butt joint frame is welded at the edge of an inner butt joint plate at equal intervals, a blocking strip is uniformly placed in the U-shaped butt joint frame, a stepped hole is formed in the top surface of an outer butt joint plate corresponding to a butt joint pipe, movable holes are symmetrically formed in a connecting pipe, a triangular clamping block is welded at the bottom end of a spring sheet, a pull handle is hinged to the top surface of the connecting pipe, a connecting side assembly is bonded at the edges of both sides of the inner filter layer and the outer filter layer, a polytetrafluoroethylene coating is applied to the outer side of the strengthening edge away from the inner filter layer, a second butt joint frame is bonded to the other end of the strengthening edge, and a clamping hook is bonded to one end of a rubber strip. The U-shaped butt joint frames at both ends are cross-coupled, the number of the blocking strips placed inside is adjusted, the tension of the connection can be fine-tuned, the length of the connection can be adjusted, the tension is ensured, loosening is prevented, the connecting pipe inside the butt joint pipe is rotated to fix and disassemble, and the connection is simple, convenient and fast.

Description

Technical Field

[0001] The invention relates to the field of wastewater treatment technology, specifically to filter cloth for high-pressure dewatering of sludge. Background Technology

[0002] Industrial filter cloth is a core component of sludge dewatering equipment, and is widely used in mechanical dewatering equipment such as belt filter presses and plate and frame filter presses. The strength, air permeability, and resistance to compression deformation of the filter cloth directly affect the dewatering capacity of mechanical dewatering equipment for sludge. Most belt filter presses and plate and frame filter presses on the market currently use monofilament or multifilament polypropylene fabric.

[0003] However, the filter cloths currently on the market for high-pressure dehydration are inconvenient to connect during use. The connection length is fixed, and errors during cutting often result in excessively high or low tension, causing the filter cloth to fail to perform its filtration function and affecting the efficiency of filtration and dehydration. Summary of the Invention

[0004] The invention provides a filter cloth for high-pressure dewatering of sludge, which can effectively solve the problems mentioned in the background art, such as inconvenient connection, fixed connection length, and frequent errors in cutting leading to excessively high or low tension, resulting in the filter cloth failing to perform its filtration function and affecting the efficiency of filtration and dewatering.

[0005] To achieve the above objectives, the invention provides the following technical solution: including an inner filter layer, wherein a connecting component is provided at the end of the inner filter layer, the connecting component including a docking inner plate, a U-shaped docking frame, a docking outer plate, a baffle, a rotating groove, a rounded corner, a limiting groove, a limiting piece, a connecting pipe, a locking hole, a stepped hole, a connecting pipe, a movable hole, a spring piece, a triangular locking block, a pull handle, and a connecting filter screen;

[0006] Two inner docking plates are respectively installed on the inner sides of both ends of the inner filter layer. U-shaped docking frames are welded at equal intervals along the edges of the inner docking plates. The tops of several U-shaped docking frames are hinged to one side of the outer docking plate. A baffle is evenly placed inside the U-shaped docking frame. A rotating groove is provided on one side of the baffle, and a rounded corner is provided on the other side of the baffle. Limiting grooves are provided at both ends of the baffle, and limiting pieces are engaged inside the limiting grooves. A connecting pipe is evenly welded to the top surface of the inner docking plate. A locking hole is symmetrically provided at the bottom end of the connecting pipe. A stepped hole is provided on the top surface of the outer docking plate at the corresponding connecting pipe. A connecting pipe is movably embedded inside the stepped hole. A movable hole is symmetrically provided on the connecting pipe. A spring plate is spot-welded to the top of the movable hole. A triangular locking block is welded to the bottom end of the spring plate. A pull handle is hinged to the top surface of the connecting pipe. A connecting filter screen is glued to the bottom end of the inner docking plate.

[0007] Preferably, the top and bottom surfaces of the U-shaped docking frame are in contact with the top and bottom surfaces of the baffle, respectively, and the diameters of the rotating groove and the fillet are equal.

[0008] Preferably, the bottom diameter of the stepped hole is smaller than the top diameter, and the top diameter of the stepped hole is equal to the top diameter of the connecting pipe.

[0009] Preferably, the top surface of the triangular block is a right triangle, and the length of the card hole is equal to the width of the spring sheet.

[0010] Preferably, a connecting strip is welded to one end of the limiting piece near the limiting groove, and the diameter of the limiting piece is larger than the distance between the inner and outer mating plates.

[0011] Preferably, an outer filter layer is bonded to the outside of the inner filter layer, a transverse skeleton strip is bonded between the inner filter layer and the outer filter layer, the transverse skeleton strip is connected by a longitudinal skeleton strip, and polytetrafluoroethylene reinforcing lines are uniformly bonded to the outside of the outer filter layer.

[0012] Preferably, the inner filter layer and the outer filter layer each have a limiting hole at the corresponding connecting pipe, and the diameter of the limiting hole is equal to the outer diameter of the connecting pipe.

[0013] Preferably, side components are bonded to both sides of the inner and outer filter layers. The side components include a reinforcing edge, a polytetrafluoroethylene coating, a first mating frame, a snap rod, a clip, a second mating frame, a rubber strip, and a hook.

[0014] The two reinforcing edges are respectively bonded to both sides of the inner filter layer. The outer side of the reinforcing edges away from the inner filter layer is coated with polytetrafluoroethylene. A first mating frame is bonded to one end of the reinforcing edge. A snap-fit ​​rod is uniformly welded inside the first mating frame. A clip is welded to one end of the snap-fit ​​rod. A second mating frame is bonded to the other end of the reinforcing edge. A rubber strip is bonded to one end of the second mating frame. A hook is bonded to one end of the rubber strip.

[0015] Preferably, the first docking frame and the second docking frame are of equal size, and the bottom surface of the inner side of the clip contacts the top surface of the second docking frame.

[0016] Preferably, a limiting piece is attached to one side of the first docking frame and the second docking frame, and the sum of the thicknesses of the first docking frame and the second docking frame is equal to the thickness of the reinforcing edge.

[0017] Compared with existing technologies, the invention has the following advantages: its structure is scientifically sound and reasonable, and it is safe and convenient to use.

[0018] 1. It is equipped with a connecting component. The U-shaped docking brackets at both ends interlock and snap together. The tension of the connection can be finely adjusted by adjusting the number of inserting retaining strips inside. The length of the connection is adjustable to ensure tension and prevent loosening. It can be fixed and disassembled by rotating the connecting tube inside the docking tube. The connection is simple, convenient and quick.

[0019] 2. It is equipped with an outer filter layer, transverse skeleton strips, longitudinal skeleton strips and polytetrafluoroethylene (PTFE) reinforcing lines. Without reducing the filtration capacity, the strength can be increased by changing the density of the transverse and longitudinal skeleton strips. Combined with the outer PTFE reinforcing lines, the filter cloth has stronger tensile strength.

[0020] 3. A side assembly is provided to protect the edge of the filter cloth, prevent the edge of the filter cloth from being worn due to friction, and prevent it from being torn from the edge. The end of the reinforcing edge is connected by the docking of the first docking frame and the second docking frame, and at the same time, it will block the limiting piece to prevent it from falling off.

[0021] In summary, the filter cloth is connected into a ring shape by the connecting components and then installed in the belt filter press. With the reinforcement of the transverse skeleton strips, longitudinal skeleton strips and side components, the strength is higher, the compressive strength is better, and it is not easy to break. The ends of the reinforced edges are protected by the first and second docking frames to prevent loosening, resulting in better overall strength and stability. Attached Figure Description

[0022] The accompanying drawings are provided to further understand the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0023] In the attached diagram:

[0024] Figure 1 This is a schematic diagram of the invention's structure;

[0025] Figure 2 This is a structural schematic diagram of the invention's connecting component;

[0026] Figure 3 This is a schematic diagram of the installation structure of the inner plate of the invention.

[0027] Figure 4 It is an invention Figure 3 A schematic diagram of the structure of region A;

[0028] Figure 5 This is a schematic diagram of the installation structure of the horizontal skeleton strip.

[0029] Figure 6 This is a structural schematic diagram of the side component of the invention;

[0030] Labels in the diagram: 1. Inner filter layer;

[0031] 2. Connecting components; 201. Inner docking plate; 202. U-shaped docking bracket; 203. Outer docking plate; 204. Stop bar; 205. Rotating groove; 206. Rounded corner; 207. Limiting groove; 208. Limiting piece; 209. Connecting tube; 210. Locking hole; 211. Stepped hole; 212. Connecting tube; 213. Movable hole; 214. Spring plate; 215. Triangular locking block; 216. Pull handle;

[0032] 3. Outer filter layer; 4. Horizontal skeleton strips; 5. Vertical skeleton strips; 6. Polytetrafluoroethylene reinforced lines;

[0033] 7. Side assembly; 701. Reinforced edge; 702. PTFE coating; 703. First mating frame; 704. Clip rod; 705. Clip; 706. Second mating frame; 707. Rubber strip; 708. Hook. Detailed Implementation

[0034] The preferred embodiments of the invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the invention.

[0035] Example: Figure 1-4 As shown, the invention provides a filter cloth technical solution for high-pressure dewatering of sludge, including an inner filter layer 1. A connecting component 2 is provided at the end of the inner filter layer 1. The connecting component 2 includes a docking inner plate 201, a U-shaped docking frame 202, a docking outer plate 203, a baffle 204, a rotating groove 205, a rounded corner 206, a limiting groove 207, a limiting piece 208, a connecting pipe 209, a locking hole 210, a stepped hole 211, a connecting pipe 212, a movable hole 213, a spring piece 214, a triangular locking block 215, a pull handle 216, and a connecting filter screen 217.

[0036] Two inner docking plates 201 are respectively installed on the inner sides of both ends of the inner filter layer 1. U-shaped docking brackets 202 are welded at equal intervals along the edges of the inner docking plates 201. The tops of several U-shaped docking brackets 202 are hinged to one side of the outer docking plate 203. Baffles 204 are evenly placed inside the U-shaped docking brackets 202. A rotating groove 205 is provided on one side of the baffle 204, and a rounded corner 206 is provided on the other side of the baffle 204. The top and bottom surfaces of the U-shaped docking frame 202 contact the top and bottom surfaces of the baffle 204, respectively. The diameters of the rotating groove 205 and the rounded corner 206 are equal, facilitating the installation of the baffle 204 inside the U-shaped docking frame 202. Limiting grooves 207 are provided at both ends of the baffle 204, and limiting pieces 208 are engaged inside the limiting grooves 207. A connecting strip is welded to one end of the limiting piece 208 near the limiting groove 207. The diameter of the limiting piece 208 is larger than the distance between the inner docking plate 201 and the outer docking plate 203, facilitating the installation of the limiting piece 208 within the limiting groove 207. The top surface of the inner docking plate 201 is uniformly welded with connecting pipes 209, and the bottom ends of the connecting pipes 209 are symmetrically provided with locking mechanisms. Hole 210, a stepped hole 211 is provided on the top surface of the outer plate 203 corresponding to the connecting pipe 209. A connecting pipe 212 is movably embedded in the stepped hole 211. The bottom diameter of the stepped hole 211 is smaller than the top diameter, and the top diameter of the stepped hole 211 is equal to the top diameter of the connecting pipe 212, so as to facilitate the installation of the connecting pipe 212 inside the stepped hole 211. The connecting pipe 212 has symmetrically provided movable holes 213. A spring plate 214 is spot-welded to the top of the movable hole 213. A triangular locking block 215 is welded to the bottom of the spring plate 214. The top surface of the triangular locking block 215 is a right triangle. The length of the locking hole 210 is equal to the width of the spring plate 214, so as to facilitate the locking of the triangular locking block 215 into the locking hole 210. A pull handle 216 is hinged to the top surface of the connecting pipe 212. A connecting filter screen 217 is glued to the bottom of the inner plate 201.

[0037] like Figure 5 As shown, an outer filter layer 3 is bonded to the outside of the inner filter layer 1. Limiting holes are opened at the corresponding joints 209 of both the inner filter layer 1 and the outer filter layer 3. The diameter of the limiting holes is equal to the outer diameter of the joints 209, which facilitates the installation of the joints 209. A transverse skeleton strip 4 is bonded between the inner filter layer 1 and the outer filter layer 3. The transverse skeleton strip 4 is connected by a longitudinal skeleton strip 5. Polytetrafluoroethylene reinforcing lines 6 are uniformly bonded to the outside of the outer filter layer 3.

[0038] like Figure 6 As shown, side components 7 are bonded to both sides of the inner filter layer 1 and the outer filter layer 3. The side components 7 include a reinforcing edge 701, a polytetrafluoroethylene coating 702, a first docking frame 703, a snap-fit ​​rod 704, a clip 705, a second docking frame 706, a rubber strip 707, and a hook 708.

[0039] Two reinforcing edges 701 are respectively bonded to both sides of the inner filter layer 1. The outer side of the reinforcing edges 701 away from the inner filter layer 1 is coated with a polytetrafluoroethylene coating 702. A first mating frame 703 is bonded to one end of the reinforcing edge 701. A snap-fit ​​rod 704 is uniformly welded inside the first mating frame 703. One end is welded with a clip 705, and the other end of the reinforcing edge 701 is bonded with a second docking frame 706. The first docking frame 703 and the second docking frame 706 are of equal size. The bottom surface of the inside of the clip 705 contacts the top surface of the second docking frame 706. A limiting piece 208 is attached to one side of the first docking frame 703 and the second docking frame 706. The sum of the thicknesses of the first docking frame 703 and the second docking frame 706 is equal to the thickness of the reinforcing edge 701, preventing the first docking frame 703 and the second docking frame 706 from exceeding the outer and inner sides of the filter cloth and causing the speaker filter cloth to move. This facilitates the docking of the first docking frame 703 and the second docking frame 706. A rubber strip 707 is bonded to one end of the inside of the second docking frame 706, and a hook 708 is bonded to one end of the rubber strip 707.

[0040] The working principle and usage process of the invention are as follows: Cut the filter cloth to the required length, and attach the first docking frame 703 and the second docking frame 706 to both ends of the reinforcing edge 701 respectively. Wrap the filter cloth around the guide roller of the belt filter press. Make holes at the ends of the filter cloth corresponding to the connecting pipe 209. Place the inner docking plate 201 close to the inside of the filter cloth, and insert the connecting pipe 209 into the hole. Rotate the outer docking plate 203 until it is parallel to the outer docking plate 203. Push the triangular locking block 215 and the spring plate 214. Deformation occurs when the triangular locking block 215 retracts into the movable hole 213 and is inserted into the stepped hole 211. After connecting the tube 212, rotating the handle 216 causes the triangular locking block 215 to embed into the locking hole 210, completing the initial fixation. For disassembly, rotating the connecting tube 212 in the opposite direction causes the inclined edge of the triangular locking block 215 to slide along the end of the locking hole 210 until it is completely disengaged. Installation and disassembly are simple and convenient. The U-shaped connecting brackets 202 at both ends of the filter cloth are interlocked, and the baffle 204 is placed in the overlapping holes. The rotating groove 205 and the rounded corner 206 are aligned, and the limiting piece 208 is embedded in the limiting groove 207. To prevent loosening, the length of the connection can be changed by altering the number of baffles 204, allowing for fine-tuning of the connection tension. The length of the connection is adjustable to ensure tension and prevent loosening. Then, pull the second docking frame 706 into the clip 705 at the top of the first docking frame 703. Pull the rubber strip 707, and the hook 708 will engage with the connecting rod 704 for fixation. Connect the filter screen 217 to seal the gap at the connection, completing the installation.

[0041] The filter cloth is equipped with an outer filter layer 3, transverse skeleton strips 4, longitudinal skeleton strips 5 and polytetrafluoroethylene reinforcing lines 6. Without reducing the filtration capacity, the strength can be increased by changing the density of the transverse skeleton strips 4 and the longitudinal skeleton strips 5. Combined with the outer polytetrafluoroethylene reinforcing lines 6, the tensile strength of the filter cloth is stronger.

[0042] The side assembly 7 protects the edge of the filter cloth, preventing the edge of the filter cloth from being worn due to friction and from being torn from the edge. The end of the reinforcing edge 701 is connected by the first mating frame 703 and the second mating frame 706. At the same time, it also blocks the limiting piece 208 to prevent it from falling off.

[0043] After the filter cloth is connected into a ring by the connecting component 2, it is installed in the belt filter press. With the reinforcement of the transverse skeleton strip 4, the longitudinal skeleton strip 5 and the side component 7, the strength is higher, the compressive strength is better, and it is not easy to break. The ends of the reinforced edge 701 are protected by the first docking frame 703 and the second docking frame 706 to prevent loosening. The overall strength and stability are better.

[0044] Finally, it should be noted that the above descriptions are merely preferred examples of the invention and are not intended to limit the invention. Although the invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A filter cloth for high-pressure dewatering of sludge, comprising an inner filter layer (1), characterized in that: The inner filter layer (1) is provided with a connecting component (2) at its end. The connecting component (2) includes a docking inner plate (201), a U-shaped docking frame (202), a docking outer plate (203), a baffle (204), a rotating groove (205), a rounded corner (206), a limiting groove (207), a limiting piece (208), a connecting pipe (209), a locking hole (210), a stepped hole (211), a connecting pipe (212), a movable hole (213), a spring piece (214), a triangular locking block (215), a pull handle (216), and a connecting filter screen (217). Two inner docking plates (201) are respectively installed on the inner sides of both ends of the inner filter layer (1). U-shaped docking frames (202) are welded at equal intervals on the edges of the inner docking plates (201). The tops of several U-shaped docking frames (202) are hinged to one side of the outer docking plate (203). A baffle (204) is evenly placed inside the U-shaped docking frame (202). A rotating groove (205) is opened on one side of the baffle (204). A rounded corner (206) is provided on the other side of the baffle (204). A limiting groove (207) is opened at both ends of the baffle (204). A limiting piece (208) is snapped into the limiting groove (207). The top of the inner docking plate (201) The outer plate (203) is uniformly welded with connecting pipes (209). The bottom end of the connecting pipes (209) is symmetrically provided with locking holes (210). The top surface of the outer plate (203) is provided with stepped holes (211) corresponding to the connecting pipes (209). A connecting pipe (212) is movably embedded inside the stepped holes (211). The connecting pipe (212) is symmetrically provided with movable holes (213). A spring plate (214) is spot-welded to the top of the movable hole (213). A triangular locking block (215) is welded to the bottom end of the spring plate (214). A pull handle (216) is hinged to the top surface of the connecting pipe (212). A connecting filter screen (217) is glued to the bottom end of the inner plate (201). The top and bottom surfaces of the U-shaped docking frame (202) are in contact with the top and bottom surfaces of the baffle (204) respectively, and the diameters of the rotating groove (205) and the rounded corner (206) are equal; Wrap the filter cloth around the guide roller of the belt filter press. Make a hole at the end of the filter cloth corresponding to the connecting pipe (209). Place the inner connecting plate (201) close to the inside of the filter cloth. Insert the connecting pipe (209) into the hole. Rotate the outer connecting plate (203) until the outer connecting plate (203) and the outer connecting plate (203) are parallel. Push the triangular locking block (215). The spring plate (214) deforms and the triangular locking block (215) retracts into the movable hole (213) and is inserted into the stepped hole (211). After connecting the pipe (212), rotate the handle (216) so that the triangular locking block (215) is embedded into the locking hole (210) to complete the initial fixation. When disassembling, rotate the connecting pipe (212) in the opposite direction so that the inclined side of the triangular locking block (215) slides along the end of the locking hole (210) until it is completely disengaged.

2. The filter cloth for high-pressure dewatering of sludge according to claim 1, characterized in that, The bottom diameter of the stepped hole (211) is smaller than the top diameter, and the top diameter of the stepped hole (211) is equal to the top diameter of the connecting pipe (212).

3. The filter cloth for high-pressure dewatering of sludge according to claim 1, characterized in that, The top surface of the triangular block (215) is a right triangle, and the length of the card hole (210) is equal to the width of the spring sheet (214).

4. The filter cloth for high-pressure dewatering of sludge according to claim 1, characterized in that, The limiting piece (208) has a connecting strip welded to one end near the limiting groove (207), and the diameter of the limiting piece (208) is greater than the distance between the inner docking plate (201) and the outer docking plate (203).

5. The filter cloth for high-pressure dewatering of sludge according to claim 1, characterized in that, An outer filter layer (3) is bonded to the outside of the inner filter layer (1). A transverse skeleton strip (4) is bonded between the inner filter layer (1) and the outer filter layer (3). The transverse skeleton strip (4) is connected by a longitudinal skeleton strip (5). A polytetrafluoroethylene reinforcing line (6) is uniformly bonded to the outside of the outer filter layer (3).

6. The filter cloth for high-pressure dewatering of sludge according to claim 5, characterized in that, The inner filter layer (1) and the outer filter layer (3) are provided with limiting holes at the corresponding connecting pipe (209), and the diameter of the limiting hole is equal to the outer diameter of the connecting pipe (209).

7. The filter cloth for high-pressure dewatering of sludge according to claim 5, characterized in that, The inner filter layer (1) and the outer filter layer (3) are both bonded to the side edges of the side components (7). The side components (7) include a reinforcing edge (701), a polytetrafluoroethylene coating (702), a first docking frame (703), a snap rod (704), a clip (705), a second docking frame (706), a rubber strip (707), and a hook (708). The two reinforcing edges (701) are respectively bonded to both sides of the inner filter layer (1). The outer side of the reinforcing edge (701) away from the inner filter layer (1) is coated with a polytetrafluoroethylene coating (702). A first docking frame (703) is bonded to one end of the reinforcing edge (701). A snap-fit ​​rod (704) is uniformly welded inside the first docking frame (703). A clip (705) is welded to one end of the snap-fit ​​rod (704). A second docking frame (706) is bonded to the other end of the reinforcing edge (701). A rubber strip (707) is bonded to one end inside the second docking frame (706). A hook (708) is bonded to one end of the rubber strip (707).

8. The filter cloth for high-pressure dewatering of sludge according to claim 7, characterized in that, The first docking frame (703) and the second docking frame (706) are of equal size, and the bottom surface of the inner side of the clip (705) contacts the top surface of the second docking frame (706).

9. The filter cloth for high-pressure dewatering of sludge according to claim 7, characterized in that, A limiting piece (208) is attached to one side of the first docking frame (703) and the second docking frame (706), and the sum of the thicknesses of the first docking frame (703) and the second docking frame (706) is equal to the thickness of the reinforcing edge (701).

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