Sand-making sewage filter press

Abstract

The utility model relates to a sand-making sewage filter press which comprises a rack, a hydraulic cylinder, a thrust plate and a pressing plate, wherein the hydraulic cylinder and the thrust plate are arranged on the rack, and the pressing plate is arranged on a piston rod of the hydraulic cylinder. The filter frames are connected to the rack in a sliding manner and are arranged between the thrust plate and the pressing plate in parallel; the U-shaped grooves are formed in the inner walls of the filter frames and upwards penetrate through the filter frames; the sealing strips are embedded into the U-shaped grooves; the filter plates are inserted into the U-shaped grooves in a sliding manner and are tightly propped against the sealing strips; and the fastening piece is arranged between the filter frame and the filter plate. The utility model has the effect that the filter plate is convenient to disassemble and clean.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sand making sewage treatment especially relates to a sand making sewage filter press. BACKGROUND

[0002] Concrete is the most widely used man-made engineering material in the world, and its preparation and application have a profound and lasting impact on the natural environment and human social environment. With the increase of concrete production, the amount of wastewater generated will also increase. These wastewaters are mainly from site washing, sand making wastewater treatment, sand and gravel cleaning, production and transportation equipment residual concrete cleaning. If not properly treated, it will lead to the situation of wastewater overflow disaster and waste residue accumulation. Since the wastewater mainly contains mud, cement, fly ash, mineral powder and their hydration products or ions such as Ca 2+ , OH - , K + , Na + , SO4 2- , etc. introduced by additives and mineral admixtures, the presence of these components makes the properties of wastewater uncertain, and has a high alkali content. Direct discharge not only wastes resources, but also pollutes the soil and water sources.

[0003] Currently, the environmental protection problem of concrete production has also been highly valued, and many concrete production enterprises also pay more and more attention to the investment in wastewater treatment. Studies have shown that wastewater has a certain impact on the performance of cement, but it is within the scope of the cement standard requirements, and it has little effect on the flexural strength and compressive strength of cement. Studies have also shown that the water content of cement at standard consistency is positively correlated with the amount of wastewater. For every 20% increase in wastewater, the water content will increase by about 0.5%. When wastewater completely replaces clean water, the total water content will increase by about 2.3%. At the same time, the water content and the solid content of wastewater are positively correlated, that is, the higher the solid content, the more water cement needs. Therefore, by improving the filter pressing process of the filter press to control the solid content of sand and gravel cleaning wastewater to be consistent, it is the key to the large-scale application of concrete flushing residual slurry in C40~C80 concrete.

[0004] Plate and frame filter press is the first mechanical used in chemical dewatering, although plate and frame filter press is generally intermittent operation, infrastructure investment is larger, and the filtering capacity is lower, but due to its large filter driving force, high solid content of filter cake, clear filtrate, high solid recovery rate, and less conditioning chemicals consumption, etc., it is still widely used in some small sewage plants. The mechanical dewatering method of sludge includes filtration dewatering, centrifugal dewatering and squeezing dewatering, filtration dewatering includes vacuum filtration and pressure filtration, centrifugal dewatering is dewatering by centrifuge, and squeezing dewatering is dewatering by screw press or rolling press, commonly used are pressure filtration and centrifugal dewatering method. The sludge filtration dewatering is to use the pressure difference between the two sides of the filter medium as the driving force to make the water in the sludge be forced through the filter medium to form filtrate, and the solid particles are intercepted on the medium to form filter cake, so as to achieve the purpose of sludge dewatering. The existing part of plate and frame filter press is not convenient to take out the filter plate for cleaning, and it is not convenient for the user to disassemble and clean when the filter plate needs to be cleaned. Practical new type content

[0005] The problem to be solved by the present application is to provide a sand making sewage filter press which is convenient to disassemble and clean the filter plate.

[0006] The above-mentioned practical new type of the present application is realized by the following technical scheme:

[0007] A sand making sewage filter press, comprising a rack, a hydraulic cylinder and a thrust plate arranged on the rack, and a pressing plate arranged on the piston rod of the hydraulic cylinder, further comprising a plurality of filter frames slidingly connected to the rack and arranged side by side between the thrust plate and the pressing plate, a U-shaped groove opened in the inner wall of the filter frame and penetrating the filter frame upward, a sealing strip embedded in the U-shaped groove, a filter plate slidingly inserted into the U-shaped groove and tightly abutting against the sealing strip, and a fastener arranged between the filter frame and the filter plate.

[0008] By adopting the technical scheme, the filter plate can be installed and separated from the filter frame in the middle of the filter frame by tightening or loosening the fastener, the fastener can be a bolt, a nut or the like, the filter plate can be conveniently fastened or loosened by adjusting the fastener, so that the filter plate can be quickly replaced and cleaned; meanwhile, the U-shaped groove formed in the inner wall of the filter frame and the sealing strip embedded in the U-shaped groove ensure the sealing between the filter plate and the filter frame, so that the filtering efficiency and the clarity of the filtrate are ensured; in the actual filter pressing process, the pressure plate can apply pressure to the filter plate through the extension and retraction of the hydraulic cylinder, so that efficient dewatering of the sludge is realized, and the thrust plate serves to support the filter plate and ensure that the filter plate does not deform during the pressing process; in summary, the sand making sewage filter press of the utility model not only improves the efficiency of sludge dewatering and the clarity of the filtrate, but also greatly simplifies the disassembly and cleaning process of the filter plate through the optimized design of the structure, reduces the maintenance cost, prolongs the service life of the equipment, and is particularly suitable for occasions where the filter plate needs to be frequently cleaned.

[0009] The utility model further sets up: still include setting on the filter plate's holding portion.

[0010] By adopting the technical scheme, the user can conveniently grab and apply force.

[0011] The utility model further sets up: sealing strip includes the partition strip, and the blocking strip, the fixed strip, the movable strip, the rubber support and the flexible support that follow the thickness direction in turn touch, the blocking strip is closely embedded on the U type groove, and is closely set on the fixed strip, the fixed strip and movable strip are closely set on the partition strip, the rubber support includes the outer contact portion that is closely set on the movable strip, the inner contact portion that is closely set on the partition strip and the neck portion that connects the inner contact portion and the outer contact portion, the flexible support is closely set on the outer contact portion, the neck portion and the partition strip in turn.

[0012] By adopting the technical scheme, the multi-layer structure design of the sealing strip ensures that effective sealing is formed between the filter plate and the filter frame, even in the high-pressure filtering process, good sealing performance can be maintained, leakage of the filtrate is avoided, and the filtering efficiency is further improved; the design of the partition strip can effectively prevent the backflow of the filtrate in the U-shaped groove, and the filter plate is convenient to disassemble and assemble, and the combination of the blocking strip, the fixed strip and the movable strip ensures the adaptability and stability of the sealing strip under different pressures, and at the same time, the use of the rubber support and the flexible support not only enhances the elasticity and durability of the sealing strip, but also provides sufficient supporting force to adapt to the deformation of the filter plate in the pressing process, so that the reliability of long-term use is ensured.

[0013] The utility model further sets up: the lateral wall of movable strip is provided with the movable head, the movable head is closely contacted with the lateral wall of fixed strip.

[0014] By adopting the above technical scheme, the flexible sealing effect is good.

[0015] The utility model further sets up: the surface of outer connection department is equipped with the corner groove of embedding with movable strip.

[0016] By adopting the above technical scheme, the flexible sealing effect is good.

[0017] The utility model further sets up: the surface of neck is equipped with at least two arc concave recess.

[0018] By adopting the above technical scheme, the flexible sealing effect is good.

[0019] The utility model further sets up: the flexible support includes the L type support of tightly setting in neck, the Z type support of sequentially tightly setting in outer connection department and L type support, the inverted L type support of tightly embedding in U type groove, and the limit strip of sequentially tightly setting in L type support and partition strip and tightly embedding in inverted L type support.

[0020] By adopting the above technical scheme, the flexible sealing effect is good.

[0021] The utility model further sets up: the side wall of partition strip is equipped with a plurality of tooth slot, the side wall of filter plate is protruding and is provided with a plurality of rack respectively inserted in a plurality of tooth slot.

[0022] By adopting the above technical scheme, the filter plate installation is convenient.

[0023] Summarized above, the beneficial technical effect of the utility model is: the sand making sewage filter press of the utility model not only improves the efficiency of sludge dewatering and the clarity of filtrate, and through the optimization design of structure, greatly simplifies the disassembly and cleaning process of filter plate, reduces the maintenance cost, prolongs the service life of equipment, and is especially suitable for the occasion that needs to clean filter plate frequently. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the structure schematic diagram of sand making sewage filter press of the utility model.

[0025] Figure 2 It is the connecting relation schematic diagram between filter frame and filter plate of the utility model.

[0026] Figure 3 It is the connecting relation schematic diagram between sealing strip, filter frame and filter plate of the utility model.

[0027] Figure 4 It is the connecting relation schematic diagram between sealing strip and U type groove of the utility model.

[0028] In the figure, 1, rack; 2, hydraulic cylinder; 3, thrust plate; 4, compression plate; 5, filter assembly; 6, filter frame; 7, U-shaped groove; 8, sealing strip; 81, partition strip; 811, tooth groove; 82, blocking strip; 83, fixed strip; 84, movable strip; 841, moving head; 85, rubber support; 851, external connection part; 852, internal connection part; 853, neck; 854, angle groove; 855, groove; 86, flexible support; 861, positive L-shaped support; 862, Z-shaped support; 863, inverted L-shaped support; 864, limiting strip; 9, filter plate; 91, rack; 10, fastener; 11, gripping portion. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, purposes and effects of the utility model more clear and easy to understand, the utility model will be further described below in combination with the drawings and specific embodiments.

[0030] REFERENCE Figure 1 The utility model discloses a kind of sand making sewage filter presses, including rack 1, the hydraulic cylinder 2 and thrust plate 3 being set on rack 1, the compression plate 4 being set on the piston rod of hydraulic cylinder 2, and filter assembly 5 being arranged between thrust plate 3 and compression plate 4. Figure 2 Wherein, filter assembly 5 includes multiple filter frames 6 slidingly connected on rack 1 and arranged side by side, U-shaped groove 7 is opened in the inner wall of filter frame 6 and penetrates filter frame 6 upwards, sealing strip 8 is embedded on U-shaped groove 7, filter plate 9 is slidingly inserted on U-shaped groove 7 and tightly abuts on sealing strip 8, fastener 10 is arranged between filter frame 6 and filter plate 9, and gripping portion 11 is arranged on filter plate 9.

[0031] By tightening or loosening fastener 10, the installation and disengagement of filter plate 9 in the middle of filter frame 6 can be realized, and fastener 10 can be a bolt. By adjusting fastener 10, filter plate 9 can be conveniently fastened or loosened, so that filter plate 9 can be quickly replaced and cleaned. At the same time, U-shaped groove 7 opened in the inner wall of filter frame 6 and sealing strip 8 embedded on U-shaped groove 7 ensure the sealing between filter plate 9 and filter frame 6, thereby ensuring the filtering efficiency and the clarity of filtrate. In the actual filter pressing process, compression plate 4 can exert pressure on filter plate 9 through the extension and retraction movement of hydraulic cylinder 2, thereby realizing efficient dewatering of sludge. The role of thrust plate 3 is to support filter plate 9 and ensure that filter plate 9 does not deform during compression. In summary, the sand making sewage filter press of the utility model not only improves the efficiency of sludge dewatering and the clarity of filtrate, but also greatly simplifies the disassembly and cleaning process of filter plate 9 through optimized structural design, reduces maintenance costs, prolongs the service life of the equipment, and is particularly suitable for occasions where filter plate 9 needs to be frequently cleaned.

[0032] REFERENCE Figure 3 And Figure 4The sealing strip 8 comprises a partition strip 81 and a blocking strip 82, a fixed strip 83, a movable strip 84, a rubber support 85 and a flexible support 86 which are sequentially abutted in the thickness direction. The side wall of the partition strip 81 is provided with a plurality of tooth grooves 811, and the side wall of the filter plate 9 is provided with a plurality of racks 91 which are respectively inserted into the plurality of tooth grooves 811. In addition, the blocking strip 82 is tightly connected to the U-shaped groove 7 and tightly sleeved on the fixed strip 83; the side wall of the movable strip 84 is provided with a movable head 841 which tightly abuts against the side wall of the fixed strip 83; the fixed strip 83 and the movable strip 84 are gap-sleeved on the partition strip 81; the rubber support 85 comprises an outer connecting portion 851 which is tightly sleeved on the movable strip 84, an inner connecting portion 852 which is tightly sleeved on the partition strip 81, and a neck portion 853 which connects the inner connecting portion 852 and the outer connecting portion 851, the surface of the outer connecting portion 851 is provided with an angle groove 854 which is connected to the movable strip 84, and the surface of the neck portion 853 is provided with two arc-shaped concave grooves 855; the flexible support 86 comprises a right L-shaped support 861 which is tightly sleeved on the neck portion 853, a Z-shaped support 862 which is tightly sleeved on the outer connecting portion 851 and the right L-shaped support 861 in sequence, an inverted L-shaped support 863 which is tightly connected to the U-shaped groove 7, and a limiting strip 864 which is tightly sleeved on the right L-shaped support 861 and the partition strip 81 in sequence and tightly connected to the inverted L-shaped support 863.

[0033] The multi-layer structure of the sealing strip 8 ensures the effective sealing between the filter plate 9 and the filter frame 6, that is, the good sealing performance can be maintained even in the high-pressure filtration process, the leakage of the filtrate is avoided, and the filtration efficiency is further improved; the design of the partition strip 81 can effectively prevent the backflow of the filtrate in the U-shaped groove 7 and facilitate the disassembly and assembly of the filter plate 9, and the combination of the blocking strip 82, the fixed strip 83 and the movable strip 84 ensures the adaptability and stability of the sealing strip 8 under different pressures, and meanwhile, the use of the rubber support 85 and the flexible support 86 not only enhances the elasticity and durability of the sealing strip 8, but also provides sufficient supporting force to adapt to the deformation of the filter plate 9 in the pressing process, thereby ensuring the reliability in long-term use.

[0034] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application, although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. A sand making sewage filter press, comprising a frame (1), a hydraulic cylinder (2) and a thrust plate (3) arranged on the frame (1), and a pressing plate (4) arranged on the piston rod of the hydraulic cylinder (2), characterized in that: The filter frame (6) is slidably connected to the frame (1) and arranged between the thrust plate (3) and the pressing plate (4); a U-shaped groove (7) is formed in the inner wall of the filter frame (6) and extends upwardly through the filter frame (6); a sealing strip (8) is embedded in the U-shaped groove (7); a filter plate (9) is slidably inserted into the U-shaped groove (7) and tightly abuts against the sealing strip (8); and a fastener (10) is arranged between the filter frame (6) and the filter plate (9).

2. A sand filter according to claim 1, characterized in that: A holding part (11) is arranged on the filter plate (9).

3. A sand filter according to claim 1, characterized in that: The sealing strip (8) comprises a partition strip (81), a blocking strip (82), a fixed strip (83), a movable strip (84), a rubber support (85) and a flexible support (86) which are sequentially abutted in the thickness direction, the blocking strip (82) is tightly embedded in the U-shaped groove (7) and tightly sleeved on the fixed strip (83), the fixed strip (83) and the movable strip (84) are gap-sleeved on the partition strip (81), the rubber support (85) comprises an outer connecting part (851) which is tightly sleeved on the movable strip (84), an inner connecting part (852) which is tightly sleeved on the partition strip (81), and a neck part (853) which connects the inner connecting part (852) and the outer connecting part (851), and the flexible support (86) is sequentially tightly sleeved on the outer connecting part (851), the neck part (853) and the partition strip (81).

4. A sand filter according to claim 3, wherein: The side wall of the movable strip (84) is provided with a movable head (841) which tightly abuts against the side wall of the fixed strip (83).

5. A sand filter according to claim 3, wherein: The surface of the outer connecting part (851) is provided with an angle groove (854) which is embedded with the movable strip (84).

6. A sand filter according to claim 3, wherein: The surface of the neck part (853) is provided with at least two arc-shaped concave grooves (855).

7. A sand filter according to claim 3, wherein: The flexible support (86) comprises a right L-shaped support (861) which is tightly sleeved on the neck part (853), a Z-shaped support (862) which is sequentially tightly sleeved on the outer connecting part (851) and the right L-shaped support (861), an inverted L-shaped support (863) which is tightly embedded in the U-shaped groove (7), and a limiting strip (864) which is sequentially tightly sleeved on the right L-shaped support (861) and the partition strip (81) and tightly embedded in the inverted L-shaped support (863).

8. A sand filter according to claim 3, characterized in that: The side wall of the partition strip (81) is provided with a plurality of tooth grooves (811), and the side wall of the filter plate (9) is provided with a plurality of tooth strips (91) which are respectively inserted into the plurality of tooth grooves (811).

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