Internal and external embedded filter press

Abstract

The utility model discloses an inside and outside embedded type filter press, the inside and outside embedded type filter press comprises a machine frame, a pressing plate, a filter pressing structure and a thrust plate, the pressing plate, the filter pressing structure and the thrust plate are sequentially fixed on the machine frame from right to left, the pressing plate and the thrust plate are symmetrically distributed on two sides of the filter pressing structure, and a hydraulic structure is fixed on one side of the machine frame. One end of the hydraulic structure is connected with the other side of the pressing plate, the other side of the rack is connected with a feeding pipeline and a liquid outlet pipeline, the filter pressing structure comprises a plurality of groups of filter pressing plates, a plate frame and filter cloth, a filter pressing chamber is formed among the filter pressing plates, each group of filter pressing plates comprises an inner filter pressing plate, an outer filter pressing plate and a sealing strip, and the sealing strip is fixed at the edge of the outer filter pressing plate. According to the internally and externally embedded type filter press, a hydraulic structure is adopted as driving force, mechanical vibration is reduced, so that noise in the filter pressing process is reduced, and the solid content of a filter cake obtained by material separation can be remarkably improved by utilizing extrusion of the hydraulic structure.

Description

Technical Field

[0001] The utility model relates to the technical field of internal and external embedded filter presses, in particular to an internal and external embedded filter press. Background Art

[0002] Filter press is a common solid-liquid separation equipment. It has the characteristics of high filtration efficiency, large processing capacity, and low filter cake moisture content. It can operate stably under different working conditions and is widely used in many fields such as chemical industry, pharmaceuticals, metallurgy, mining, food, and environmental protection. For enterprises that need to carry out large-scale solid-liquid separation treatment, filter press is an important production equipment.

[0003] The existing filter press has a complex structure, high manufacturing cost, high equipment cost, requires professional skills for maintenance and repair, is difficult to repair, and has high maintenance cost.

[0004] At present, some manufacturers have also designed some filter presses with relatively simple structures, which are mainly composed of multiple filter plates, filter frames, and a pressing end. The pressing end is driven by a motor and a telescopic rod to press the filter plates and the filter frames together, so that a filter press chamber is formed between the filter plates. The material flows in from the feed inlet, and the filtrate is discharged through the filtrate outlet of the filter plate. The filter residue accumulates in the filter frame to form a filter cake layer. After the filter plates and the filter frame are loosened, the filter cake layer is peeled off to achieve the purpose of filtration. The existing filter press has the following shortcomings:

[0005] 1) Using the telescopic rod as the driving force for filtration, the mechanical pressure of the pressing end to squeeze the filter plate generally does not meet the ideal requirements and cannot meet the requirements of solid-liquid separation;

[0006] 2) The filtration effect of the existing filter press is relatively poor, the filter cake solid content is low, and the dehydration speed is relatively slow. Utility Model Content

[0007] In response to the problems existing in the prior art, the technical problem to be solved by the present invention is to provide an internal and external embedded filter press that adopts a hydraulic structure as a driving force, reduces mechanical vibration, reduces noise during the filtration process, increases the solid content of the filter cake obtained by material separation, reduces subsequent processing costs, is provided with a filter cloth, improves the filtration efficiency, increases the processing volume per unit time, increases the dehydration speed and dehydration effect, enhances the fineness of filtration, reduces the water content of the filter cake, and improves the purity of the filtrate to meet higher production requirements.

[0008] In order to solve the above technical problems, the utility model provides an internal and external embedded filter press, which includes a frame and a compression plate, a filter press structure, and a thrust plate fixed to the frame from right to left in sequence, wherein the compression plate and the thrust plate are symmetrically distributed on both sides of the filter press structure, one side of the filter press structure is connected to one side of the compression plate, and the other side of the filter press structure is connected to the thrust plate, a hydraulic structure is fixed to one side of the frame, one end of the hydraulic structure is connected to the other side of the compression plate, the other end of the hydraulic structure is electrically connected to a PLC control cabinet, and the other side of the frame is connected to a feed pipe and a liquid outlet pipe;

[0009] The filter press structure includes several groups of filter press plates, plate frames matched with the filter press plates, and filter cloths. The filter press plates are arranged at intervals, and each group of filter press plates is installed in the plate frame. The filter cloths are fixed to the outer surface of the filter press plates, and a filter press chamber is formed between the filter press plates.

[0010] Each set of filter press plates includes an inner filter press plate, an outer filter press plate, and a sealing strip. The inner filter press plate is embedded in the outer filter press plate, and the sealing strip is fixed to the edge of the outer filter press plate.

[0011] Furthermore, each group of filter press plates is provided with a through opening and a water flow trough, the through opening is distributed at the center position of the inner filter press plate and the outer filter press plate of each group of filter press plates, the water flow trough is distributed around the through hole, and a liquid outlet is provided at the four corners of each group of filter press plates. A concealed pipe is pre-buried on each group of filter press plates, and the water flow trough and the liquid outlet are communicated through the concealed pipe. The filtrate after each group of filter press plates filters the material flows to the liquid outlet through the water flow trough and the concealed pipe. The feed pipe passes through the compression plate of the frame, the inner and outer filter press plates of the filter press plate from left to right in turn and is connected to the through opening of the inner and outer filter press plates. The liquid outlet pipe passes through the compression plate of the frame, the inner and outer filter press plates of the filter press plate from left to right in turn and is connected to the liquid outlet of the inner and outer filter press plates.

[0012] Furthermore, the hydraulic structure includes a hydraulic station, a hydraulic rod, and an oil cylinder. The oil cylinder is connected to the hydraulic station. One end of the hydraulic rod is connected to the clamping plate for pushing the clamping plate, and the other end of the hydraulic rod is connected to the oil cylinder.

[0013] Furthermore, the hydraulic station includes a hydraulic oil tank and a high-pressure oil pump, a high-pressure oil pipe, a low-pressure oil pump, and a low-pressure oil pipe installed on the hydraulic oil tank. The high-pressure oil pump is installed on the hydraulic oil tank, the oil inlet of the high-pressure oil pump is connected to the hydraulic oil tank, the oil outlet of the high-pressure oil pump is connected to one end of the high-pressure oil pipe, and the other end of the high-pressure oil pipe is connected to the oil cylinder. The low-pressure oil pump is installed on the hydraulic oil tank, the oil inlet of the low-pressure oil pump is connected to the hydraulic oil tank, the oil outlet of the low-pressure oil pump is connected to one end of the low-pressure oil pipe, and the other end of the low-pressure oil pipe is connected to the oil cylinder.

[0014] Furthermore, the frame includes two cross beams and vertical rods, the two cross beams are distributed in parallel on the frame, and the vertical rods are connected to both ends of the cross beams.

[0015] Furthermore, plate pull ears are fixed on both sides of each group of filter press plates, and each group of filter press plates is mounted on two crossbeams of the frame through the plate pull ears on both sides.

[0016] Furthermore, the pressing plate is located at the head ends of the two beams, and lifting ears are fixed at both ends of the pressing plate. The pressing plate is mounted on the head ends of the two beams through the lifting ears at both ends.

[0017] Furthermore, the thrust plate is located at the ends of the two cross beams and is fixedly connected to the two cross beams.

[0018] Compared with the prior art, the solution of the present invention has at least the following beneficial effects:

[0019] The utility model discloses an internal and external embedded filter press comprising a frame and a compression plate, a filter press structure and a thrust plate fixed on the frame from right to left in sequence, the compression plate and the thrust plate being symmetrically distributed on both sides of the filter press structure, a hydraulic structure being fixed on one side of the frame, one end of the hydraulic structure being connected to the other side of the compression plate, and the other side of the frame being connected to a feed pipe and a liquid outlet pipe; the filter press structure comprises several groups of filter press plates, plate frames and filter cloths matching the filter press plates, a filter press chamber being formed between the filter press plates, each group of filter press plates comprising an inner filter press plate, an outer filter press plate and a sealing strip, the inner filter press plate being embedded in the inner part of the outer filter press plate, and the sealing strip being fixed to the edge of the outer filter press plate. The utility model adopts a hydraulic structure as the driving force of the internal and external embedded filter press, which reduces mechanical vibration and thus reduces noise during the filtration process. The use of the hydraulic structure for squeezing can significantly increase the solid content of the filter cake obtained by material separation, improve the dehydration speed and dehydration effect, and reduce the subsequent processing cost. The filter press structure of the utility model is provided with a filter cloth, which improves the filtration efficiency and shortens the filtration cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments are briefly introduced below.

[0021] Figure 1 This is a structural diagram of the utility model's internal and external embedded filter press;

[0022] Figure 2 This is a schematic diagram of the relationship between the filter press structure of the utility model and the feed pipe and the liquid outlet pipe;

[0023] Figure 3 This is a schematic diagram of the relationship between the hydraulic structure and the pressing plate of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the filter press plate of the utility model.

[0025] In the figure, frame 1, compression plate 2, filter press structure 3, filter press plate 31, inner filter press plate 311, outer filter press plate 312, sealing strip 313, through port 314, water trough 315, liquid outlet 316, concealed pipe 317, pull plate support ear 318, filter cloth 32, filter press chamber 33, plate frame 34, thrust plate 4, hydraulic structure 5, hydraulic station 51, hydraulic oil tank 511, high-pressure oil pump 512, high-pressure oil pipe 513, low-pressure oil pump 514, low-pressure oil pipe 515, hydraulic rod 52, oil cylinder 53, feed pipe 6, liquid outlet pipe 7, crossbeam 8, vertical rod 9, and PLC control cabinet 10. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] like Figure 1-4 As shown, the first embodiment of the present invention provides an internal and external embedded filter press, which includes a frame 1 and a pressing plate 2, a filter pressing structure 3, and a thrust plate 4 fixed on the frame 1 from right to left. The pressing plate 2 and the thrust plate 4 are symmetrically distributed on both sides of the filter pressing structure 3. One side of the filter pressing structure 3 is connected to one side of the pressing plate 2, and the other side of the filter pressing structure 3 is connected to the thrust plate 4. A hydraulic structure 5 is fixed to one side of the frame 1, one end of the hydraulic structure 5 is connected to the other side of the pressing plate 2, and the other end of the hydraulic structure 5 is electrically connected to the PLC control cabinet 10. The other side of the frame 1 It is connected to a feed pipe 6 and a liquid outlet pipe 7. The filter press structure 3 includes several groups of filter press plates 31, plate frames 34 that match the filter press plates 31, and filter cloths 32. Several filter press plates 31 are arranged at intervals. Each group of filter press plates 31 is installed in the plate frame 34. The filter cloths 32 are fixed on the outer surface of the filter press plates 31. A filter press chamber 33 is formed between the filter press plates 31 and the filter press plates 31. Each group of filter press plates 31 includes an inner filter press plate 311, an outer filter press plate 312, and a sealing strip 313. The inner filter press plate 311 is embedded in the outer filter press plate 312, and the sealing strip 313 is fixed on the edge of the outer filter press plate 312. The internal and external embedded filter press of the present invention adopts the hydraulic structure 5 as the driving force, which reduces mechanical vibration and thus reduces noise during the filtration process. The use of the hydraulic structure 5 for squeezing can significantly increase the solid content of the filter cake obtained by material separation and reduce subsequent processing costs. The filter press structure 3 of the present invention is provided with a filter cloth 32, which improves the filtration efficiency and shortens the filtration cycle.

[0028] A filter cake forming cavity is formed inside each set of filter press plates 31. In specific implementation, the filter cloth 32 of the utility model can be made of cotton cloth or microfiber cloth, which has good dehydration effect, high filtration accuracy, ensures the filtration effect, high strength and is not easy to damage. The filter plate of the utility model is made of reinforced polypropylene and has good pressure resistance and corrosion resistance.

[0029] Each set of filter press plates 31 is provided with a through-hole 314 and a water flow trough 315. The through-hole 314 is distributed at the center of the inner filter press plate 311 and the outer filter press plate 312 of each set of filter press plates 31. The water flow trough 315 is distributed around the through-hole. A liquid outlet 316 is provided at the four corners of each set of filter press plates 31. A concealed pipe 317 is pre-buried on each set of filter press plates 31. The water flow trough 315 and the liquid outlet 316 are circulated through the concealed pipe 317. The filtrate after the material flows to the liquid outlet 316 through the water flow trough 315 and the hidden pipe 317. The feed pipe 6 passes through the compression plate 2 of the frame 1, the inner and outer filter press plates 312 of the filter press plate 31 from left to right and is connected to the through openings 314 of the inner and outer filter press plates 312. The liquid outlet pipe 7 passes through the compression plate 2 of the frame 1, the inner and outer filter press plates 312 of the filter press plate 31 from left to right and is connected to the liquid outlets 316 of the inner and outer filter press plates 312. During specific implementation, a feed pump is connected to the feed pipe 6, and a liquid suction pump is connected to the liquid outlet pipe 7. The material to be filtered in the feed pipe 6 is transported to the filter plate 31 of the filter press structure 3 through the feed pump, and the hydraulic structure 5 pushes the compression plate 2 to move toward the thrust plate 4, so that the filtrate of the material to be filtered between the two adjacent groups of filter press plates 31 is squeezed by the compression plate 2, and the filtrate flows from the flow trough 315 and the hidden pipe 317 of each group of filter press plates 31 to the liquid outlet 316. The solid particles are trapped in the filter press chamber 33 and form filter cakes under the squeezing action of the filter press plates 31, thereby achieving the purpose of material filtration. The hydraulic structure 5 is released, and the filter press plates 31 are pulled apart in sequence, so that the filter cake between the two adjacent groups of filter press plates 31 automatically falls off, completing the unloading process.

[0030] The hydraulic structure 5 of the present invention includes a hydraulic station 51, a hydraulic rod 52, and an oil cylinder 53. The oil cylinder 53 is connected to the hydraulic station 51. One end of the hydraulic rod 52 is connected to the clamping plate 2 for pushing the clamping plate 2, and the other end of the hydraulic rod 52 is connected to the oil cylinder 53. The hydraulic station 51 drives the oil cylinder 53 to move, and the movement of the oil cylinder 53 drives the hydraulic rod 52 to move, so that the hydraulic rod 52 pushes the clamping plate 2 and releases the clamping plate 2. Among them, the hydraulic station 51 includes a hydraulic oil tank 511 and a high-pressure oil pump 512, a high-pressure oil pipe 513, a low-pressure oil pump 514, and a low-pressure oil pipe 515 installed on the hydraulic oil tank 511. The high-pressure oil pump 512 is installed on the hydraulic oil tank 511, and the oil inlet of the high-pressure oil pump 512 is connected to the hydraulic oil tank 511, and the oil outlet of the high-pressure oil pump 512 is connected to one end of the high-pressure oil pipe 513, and the other end of the high-pressure oil pipe 513 is connected to the oil cylinder 53. The low-pressure oil pump 514 is installed on the hydraulic oil tank 511 and is located on one side of the high-pressure oil pump 512. The oil inlet of the low-pressure oil pump 514 is connected to the hydraulic oil tank 511, and the oil outlet of the low-pressure oil pump 514 is connected to one end of the low-pressure oil pipe 515, and the other end of the low-pressure oil pipe 515 is connected to the oil cylinder 53. The hydraulic station 51 is used to drive the oil cylinder 53 to move, thereby driving the hydraulic rod 52 to move, so that the hydraulic rod 52 can quickly push the pressing plate 2, realize the filter press structure 3 to quickly filter the material, and ensure that the pressure of the filter press structure 3 is sufficient, saving energy and improving production efficiency.

[0031] In a specific implementation, the hydraulic oil tank 511 is a thin-walled hollow body capable of accommodating hydraulic oil. The hydraulic station 51, the oil cylinder 53, and the hydraulic rod 52 cooperate to provide a strong pressing force for the filter press structure 3, ensuring a tight fit between the filter press plates 31 of the filter press structure 3 and providing a solid-liquid separation effect. The low-pressure oil pump 514 of the present utility model is a hydraulic oil pump with an output pressure below 6 MPa, while the high-pressure oil pump 512 is a hydraulic oil pump with an output pressure above 6 MPa.

[0032] In other embodiments of the present invention, a first pressure sensor and a second pressure sensor may be fixed on the high-pressure oil pipe 513 and the low-pressure oil pipe 515 respectively, and the first pressure sensor and the second pressure sensor are electrically connected to the PLC control cabinet 10. The first pressure sensor and the second pressure sensor measure the pressure data of the high-pressure oil pipe 513 and the low-pressure oil pipe 515 and send the data to the PLC control cabinet 10.

[0033] The frame 1 of the present invention includes two crossbeams 8 and vertical rods 9. The two crossbeams 8 are distributed side by side on the frame 1. The vertical rods 9 are connected to the ends of the crossbeams 8. Pull plate support ears 318 are fixed on both sides of each set of filter press plates 31. Each set of filter press plates 31 is mounted on the two crossbeams 8 of the frame 1 via the pull plate support ears 318 on both sides. The compression plate 2 is located at the head end of the two crossbeams 8. The compression plate 2 is fixed with lifting ears at both ends. The compression plate 2 is mounted on the head end of the two crossbeams 8 via the lifting ears at both ends.

[0034] In other embodiments, a guide rail can be provided on the upper end surface of each cross beam 8, and a first guide wheel matching the guide rail is fixed under the pull plate support ears 318 on both sides of each group of filter press plates 31, and a second guide wheel matching the guide rail is fixed under the lifting ears at both ends of the clamping plate 2, so that when the hydraulic structure 5 pushes the clamping plate 2 toward the thrust plate 4, the clamping plate 2 and the filter press plate 31 can move along the cross beam 8.

[0035] During specific implementation, the thrust plate 4 is located at the end of the two cross beams 8 and is fixedly connected to the two cross beams 8. By setting the thrust plate 4, the movement of the filter press plate 31 can be blocked to play a limiting role, which better assists the filter press plate 31 in filtering materials.

[0036] The working principle of the internal and external embedded filter press of this utility model is as follows:

[0037] First, the material to be filtered is fed into the filter press structure 3 through the feed pipe 6;

[0038] Then, the hydraulic structure 5 is started to push the pressing plate 2 toward the thrust plate 4, so that the pressing plate 2 squeezes the filter press structure 3. Under the squeezing force of the pressing plate 2, the filtrate of the material to be filtered passes through the filter cloth 32, and the solid particles are trapped in the filter press chamber 33. Under the squeezing action of the filter press plate 31, a filter cake is formed, thereby achieving the purpose of material filtration.

[0039] Finally, the hydraulic structure 5 is released, and the filter press plates 31 are pulled apart in sequence, so that the filter cakes between two adjacent groups of filter press plates 31 fall off automatically, completing the unloading process.

[0040] Compared with the prior art, the technical solution disclosed in the above embodiment has the following beneficial effects:

[0041] The internal and external embedded filter press provided in the present invention can reduce the time consumption in the filtration process, thereby increasing the processing volume per unit time. The filter cloth 32 provided can enhance the fineness of filtration, reduce the moisture content of the filter cake, and improve the purity of the filtrate to meet higher production requirements. It can also reduce the energy consumption of the equipment and adopt a more energy-saving hydraulic drive method to reduce energy waste. The internal and external embedded filter press designed in the present invention has a simple structure and is easy to operate, which simplifies the equipment production investment cost, reduces the difficulty of operation, reduces manual intervention, and reduces the occurrence rate of failures caused by improper operation.

[0042] The above disclosure is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. An internal and external embedded filter press, characterized by: The internal and external embedded filter press includes a frame and a compression plate, a filter press structure, and a thrust plate fixed to the frame from right to left in sequence, the compression plate and the thrust plate being symmetrically distributed on both sides of the filter press structure, one side of the filter press structure being connected to one side of the compression plate, and the other side of the filter press structure being connected to the thrust plate, a hydraulic structure being fixed to one side of the frame, one end of the hydraulic structure being connected to the other side of the compression plate, the other end of the hydraulic structure being electrically connected to a PLC control cabinet, and the other side of the frame being connected to a feed pipe and a liquid outlet pipe; The filter press structure includes several groups of filter press plates, plate frames matched with the filter press plates, and filter cloths. The filter press plates are arranged at intervals, and each group of filter press plates is installed in the plate frame. The filter cloths are fixed to the outer surface of the filter press plates, and a filter press chamber is formed between the filter press plates. Each set of filter press plates includes an inner filter press plate, an outer filter press plate, and a sealing strip. The inner filter press plate is embedded in the outer filter press plate, and the sealing strip is fixed to the edge of the outer filter press plate. The hydraulic structure includes a hydraulic station, a hydraulic rod, and an oil cylinder. The oil cylinder is connected to the hydraulic station. One end of the hydraulic rod is connected to the pressing plate to push the pressing plate, and the other end of the hydraulic rod is connected to the oil cylinder. The hydraulic station includes a hydraulic oil tank and a high-pressure oil pump, a high-pressure oil pipe, a low-pressure oil pump, and a low-pressure oil pipe installed on the hydraulic oil tank. The high-pressure oil pump is installed on the hydraulic oil tank, the oil inlet of the high-pressure oil pump is connected to the hydraulic oil tank, the oil outlet of the high-pressure oil pump is connected to one end of the high-pressure oil pipe, and the other end of the high-pressure oil pipe is connected to the oil cylinder. The low-pressure oil pump is installed on the hydraulic oil tank, the oil inlet of the low-pressure oil pump is connected to the hydraulic oil tank, the oil outlet of the low-pressure oil pump is connected to one end of the low-pressure oil pipe, and the other end of the low-pressure oil pipe is connected to the oil cylinder.

2. The internal and external embedded filter press according to claim 1, characterized in that: Each group of filter press plates is provided with a through-port and a water flow trough, the through-port is distributed at the center position of the inner filter press plate and the outer filter press plate of each group of filter press plates, the water flow trough is distributed around the through-hole, and a liquid outlet is provided at the four corners of each group of filter press plates. A concealed pipe is pre-buried on each group of filter press plates, and the water flow trough and the liquid outlet are communicated through the concealed pipe. The filtrate after each group of filter press plates filters the material flows to the liquid outlet through the water flow trough and the concealed pipe. The feed pipe passes through the compression plate of the frame, the inner and outer filter press plates of the filter press plate from left to right in turn and is connected to the through-port of the inner and outer filter press plates. The liquid outlet pipe passes through the compression plate of the frame, the inner and outer filter press plates of the filter press plate from left to right in turn and is connected to the liquid outlet of the inner and outer filter press plates.

3. The internal and external embedded filter press according to claim 1, characterized in that: The frame comprises two cross beams and vertical rods. The two cross beams are distributed in parallel on the frame, and the vertical rods are connected to both ends of the cross beams.

4. The internal and external embedded filter press according to claim 1, characterized in that: Plate support ears are fixed on both sides of each set of filter press plates, and each set of filter press plates is mounted on two crossbeams of the frame through the plate support ears on both sides.

5. The internal and external embedded filter press according to claim 1, characterized in that: The pressing plate is located at the head ends of the two beams. Lifting ears are fixed at both ends of the pressing plate. The pressing plate is mounted on the head ends of the two beams through the lifting ears at both ends.

6. The internal and external embedded filter press according to claim 1, characterized in that: The thrust plate is located at the ends of the two cross beams and is fixedly connected to the two cross beams.

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