Filter press filter plate, filter pressing assembly and filter pressing dehydrator

Abstract

The utility model discloses a filter plate of a filter press, a filter pressing assembly and a filter pressing dehydrator, which belong to the field of dehydration equipment, the filter plate comprises a plate body, through holes are arranged on the plate body, a net plate is paved on the front surface or / and the back surface of the plate body, filter cloth covers the net plate, elastic sealing rings are fixed on two side surfaces of the plate body, and the elastic sealing rings are fixed on the elastic sealing rings. The height of the elastic sealing ring can be changed when the plate body is extruded; a water guide groove is further formed in the front face or / and the back face of the plate body, and a drainage hole communicated with the water guide groove is further formed in the plate body. When the filter plate provided by the utility model is used for carrying out filter pressing on slurry, the pressure borne by the slurry in the filter chamber is more uniform, the humidity and the thickness of dehydrated mud blocks are more uniform, and the dehydration effect is better.

Description

Technical Field

[0001] The utility model belongs to the field of dehydration equipment, and in particular relates to a filter plate of a filter press, a filter press component and a filter press dehydrator. Background Art

[0002] Dehydration equipment is used to remove water from water-containing materials and is widely used in industrial production. Common dehydration equipment is categorized by the dehydration method: Gravity dehydration, which relies on gravity to achieve dehydration. It is primarily used for dehydrating coarse-grained minerals and can remove free water. Key equipment includes dehydration buckets and dehydration bins that utilize natural gravity dehydration, as well as concentrators and sedimentation tanks that utilize gravity concentration dehydration. Mechanical dehydration, which relies on mechanical force to separate water from materials and remove free water, includes vibrating screens for screening dehydration, filter-type centrifugal dehydrators and decanter-type centrifugal dehydrators for centrifugal dehydration, and vacuum dehydrators, plate and frame dehydrators, and pressure filters for filtration dehydration. Thermal drying, which uses heat to vaporize water from minerals and remove capillary water, combined water, and bound water. Key methods include thermal drying and sunlight exposure.

[0003] Plate-and-frame dehydrators were the first machines used for chemical dehydration. They offer advantages such as high filtration force, high filter cake solids content, clear filtrate, high solids recovery, and low chemical consumption. They continue to be widely used in modern industry, for example in slurry dehydration. Removing moisture significantly reduces the volume and weight of the slurry, making it easier to transport and handle. However, the filter plate assembly in a traditional plate-and-frame dehydrator consists of a mud inlet and diaphragm plates positioned on either side of the filter plate, forming an air-filled chamber between the diaphragm plates. Filter cloth is mounted on the outside of the diaphragm plates, and an open filter chamber is formed outside the filter cloth. Traditional plate-and-frame dehydrators utilize a filter pressing method: a cylinder assembly pushes the filter plates together to form a sealed filter chamber between adjacent plates. Slurry is then injected into the sealed filter chamber, and air or water is injected into the air-filled chamber, causing the diaphragm plates to bulge into the filter chamber, squeezing the mud within and achieving pressure filtration. Although this method can achieve the compression of mud, the bulging height of the center of the diaphragm plate is much greater than the bulging height of the edge of the diaphragm plate when the diaphragm plate bulges, so when the diaphragm plate squeezes the mud, the squeezing force on the middle of the mud is much greater than the squeezing force on the edge of the mud, which ultimately makes the dehydration effect of the mud edge poor, and the humidity and thickness of the dehydrated mud blocks are uneven. Utility Model Content

[0004] The utility model aims to provide a filter plate, a filter press assembly and a filter press dehydrator, which can make the pressure on the mud in the filter chamber more uniform, the humidity and thickness of the mud blocks after dehydration more uniform, and the dehydration effect better.

[0005] In order to achieve the purpose of the utility model, the technical solution adopted is: a filter plate of a filter press, comprising a plate body, a through hole on the plate body, a mesh plate laid on the front and / or back of the plate body, the mesh plate covered with filter cloth, and elastic sealing rings fixed on both sides of the plate body, the height of the elastic sealing ring can change when the plate body is squeezed; a water guide groove is also provided on the front and / or back of the plate body, and a drainage hole connected to the water guide groove is also provided on the plate body.

[0006] Furthermore, the edge of the filter cloth is flush with the edge of the plate body, and the elastic sealing ring is pressed and fixed on the filter cloth.

[0007] Furthermore, the cross section of the elastic sealing ring is L-shaped or ┻-shaped, and a pressure strip for pressing the horizontal section of the elastic sealing ring is fixed on the filter plate.

[0008] Furthermore, the extrusion portion of the elastic sealing ring is a hollow structure or a honeycomb structure.

[0009] Furthermore, the mesh plate is a steel mesh.

[0010] Furthermore, the edge of the mesh plate abuts against the inner side of the elastic sealing ring, or the edge of the mesh plate is flush with the edge of the plate body.

[0011] Furthermore, the water guide groove includes an annular groove, a straight groove and a drainage groove. There are multiple annular grooves, straight grooves and drainage grooves. The multiple annular grooves are concentrically arranged at intervals. The multiple straight grooves are evenly spaced along the width direction of the plate body. The drainage groove extends radially toward the annular groove, and the annular groove, straight groove and drainage groove are connected to each other. The end of the drainage groove close to the edge of the plate body is connected to the drainage hole.

[0012] A filter press assembly includes a discharge pressure plate and a boost pressure plate. A filter plate module consisting of multiple filter plates is arranged between the discharge pressure plate and the boost pressure plate. The filter plates at both ends of the filter plate module are respectively fixed to the discharge pressure plate and the boost pressure plate, and a scissor structure is connected between adjacent filter plates.

[0013] Furthermore, the scissor-fork structure includes two cross-hinged connecting rods, and the same side of the two connecting rods is hinged to the two filter plates respectively.

[0014] Furthermore, the filter plate includes a plate body having a through hole, a mesh plate is laid on the front and / or back of the plate body, the mesh plate is covered with filter cloth, and elastic sealing rings are fixed on both sides of the plate body, and the height of the elastic sealing ring can change when the plate body is squeezed; a water guide groove is also provided on the front and / or back of the plate body, and a drainage hole connected to the water guide groove is also provided on the plate body.

[0015] Furthermore, the edge of the filter cloth is flush with the edge of the plate body, and the elastic sealing ring is pressed and fixed on the filter cloth.

[0016] Furthermore, the cross section of the elastic sealing ring is L-shaped or ┻-shaped, and a pressure strip for pressing the horizontal section of the elastic sealing ring is fixed on the filter plate.

[0017] Furthermore, the extrusion portion of the elastic sealing ring is a hollow structure or a honeycomb structure.

[0018] Furthermore, the mesh plate is a steel mesh.

[0019] Furthermore, the edge of the mesh plate abuts against the inner side of the elastic sealing ring, or the edge of the mesh plate is flush with the edge of the plate body.

[0020] Furthermore, the water guide groove includes an annular groove, and a drainage groove is connected between the annular groove and the drainage hole.

[0021] A filter press dehydrator includes a frame, on which a discharge cylinder and a boost cylinder are installed. The filter press assembly is installed between the discharge cylinder and the boost cylinder, and cantilever beams are provided on both sides of the frame. Hanging ears are installed on two opposite sides of the discharge pressure plate, the boost pressure plate and the filter plate, and the hanging ears are slidably supported on the cantilever beams.

[0022] Furthermore, a hopper, a feed pump, and a conveyor belt are installed on the frame. The feed pump inlet end is connected to the hopper outlet end, the feed pump outlet end is connected to the injection hole, and the conveyor belt is located below the filter press assembly.

[0023] Furthermore, the frame is also provided with a limiting structure for limiting the unloading pressure plate and the boosting pressure plate.

[0024] Furthermore, the limiting structure includes a locking cylinder installed on the frame, and a locking block is also installed at the output end of the locking cylinder.

[0025] Furthermore, the hinge point between the connecting rod and the filter plate is located on the hanging ear.

[0026] Furthermore, there are two groups of filter press assemblies and two unloading cylinders, which are respectively located at both ends of the frame. The inner ends of the two groups of filter press assemblies are respectively connected to the two ends of the boosting cylinder, and the outer ends of the two groups of filter press assemblies are respectively connected to the two unloading cylinders.

[0027] The beneficial effects of the utility model are:

[0028] When the filter plates of the utility model are in use, before material is injected, two adjacent filter plates are closed, and the elastic sealing rings on the two filter plates are pre-tightened to form a sealed filter chamber between the two filter plates. Then, material is injected into the filter chamber through the through hole. Then, by continuing to compress the filter plates, the elastic sealing ring is flattened, and the thickness of the filter chamber between the two filter plates becomes smaller. The material in the filter chamber is squeezed, and the squeezed water is discharged from the filter chamber through the water guide groove and the drainage hole. The dehydrated material remains in the filter chamber. When dehydration is completed, the two filter plates are separated, and the dehydrated material in the filter chamber automatically falls out.

[0029] Since the pressure on the material in the filter chamber is the pressure exerted by the filter plate surface when the material in the filter chamber is squeezed in the utility model, the pressure on the mud filled in the filter chamber is more uniform, the pressing effect is better, and the humidity and thickness of the mud blocks after dehydration are more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description, are used to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention, and are included in and constitute a part of this specification.

[0031] Figure 1 This is a front view of the filter plate of the filter press;

[0032] Figure 2 It is a cross-sectional schematic diagram of the filter plate of the filter press;

[0033] Figure 3 It is a structural diagram of the water channel;

[0034] Figure 4 It is a structural diagram of the filter press assembly;

[0035] Figure 5 This is a schematic structural diagram of the filter press dehydrator provided in Example 3 (the hanging ears and scissor structure are not shown);

[0036] Figure 6 It is a structural schematic diagram of the filter press dehydrator provided in Example 4 (the hanging ears and scissor structure are not shown).

[0037] Markings and corresponding parts names in the accompanying drawings:

[0038] 1. Frame, 2. Discharge cylinder, 3. Booster cylinder, 4. Filter press assembly, 5. Cantilever beam, 6. Hanging lug, 7. Hopper, 8. Feed pump, 9. Conveyor belt, 10. Locking cylinder, 11. Locking block, 12. Filter chamber;

[0039] 4-1, filter press assembly I, 4-2, filter press assembly II;

[0040] 2-1, unloading cylinder Ⅰa, 2-2, unloading cylinder Ⅱa;

[0041] 10-1, locking cylinder Ib, 10-2, locking cylinder IIb, 10-3, locking cylinder IIIb, 10-4, locking cylinder IVb;

[0042] 11-1, locking block Ic, 11-2, locking block IIc, 11-3, locking block IIIc, 11-4, locking block IVc;

[0043] 41. Booster plate, 42. Discharge plate, 43. Filter plate, 44. Connecting rod;

[0044] 411, unloading pressure plate Id, 412, unloading pressure plate IId;

[0045] 421, booster plate Ie, 422, booster plate IIe;

[0046] 4301. Plate body; 4302. Through hole; 4303. Mesh plate; 4304. Filter cloth; 4305. Elastic sealing ring; 4306. Pressure strip; 4307. Ring groove; 4308. Straight groove; 4309. Drainage groove; 4310. Drain hole. DETAILED DESCRIPTION

[0047] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the relevant content and are not intended to limit the present invention. It should also be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings.

[0048] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0049] Example 1

[0050] like Figure 1 、 Figure 2 、 Figure 3As shown, a filter plate of a filter press provided in this embodiment includes a plate body 4301, which can be round or square, and the plate body 4301 has a through hole 4302, which is located at the center of the plate body 4301, and both ends of the through hole 4302 pass through the front and back sides of the plate body 4301 respectively. The front and / or back of the plate body 4301 is paved with a mesh plate 4303. Whether the mesh plate 4303 is specifically installed on the front or back of the plate body 4301 depends on the configuration of the filter press. For example, when multiple filter plates 43 are pressed together and material can be squeezed between two adjacent filter plates 43, the front and back of the plate body 4301 are both paved with the mesh plate 4303. When two filter plates 43 of the multiple filter plates 43 are grouped together and material cannot be squeezed between two adjacent groups of filter plates 43, the front or back of the plate body 4301 can be paved with the mesh plate 4303. Of course, in this embodiment, it is preferred that the mesh plate 4303 be paved on both the front and back of the plate body 4301. The mesh plate 4303 is covered with a filter cloth 4304. To prevent the mesh plate 4303 and the filter cloth 4304 from falling off, the filter cloth 4304 and the mesh plate 4303 must be fixed on the plate body 4301 during installation.

[0051] Elastic sealing rings 4305 are fixed to both sides of the plate body 4301, and the center of the elastic sealing ring 4305 coincides with the center of the through hole 4302. When the elastic sealing ring 4305 is subjected to pressure perpendicular to the front and back sides of the filter plate 43, the height of the elastic sealing ring 4305 on the plate body 4301 can change. That is, when the elastic sealing ring 4305 is installed on the plate body 4301, a groove structure is formed on the plate body 4301, and when the elastic sealing ring 4305 is subjected to pressure perpendicular to the front and back sides of the filter plate 43, the depth of the groove can change. When the filter plates 43 are used on a filter press, when the two filter plates 43 are close to each other and pre-pressed, the elastic sealing rings 4305 on the two adjacent plate bodies 4301 are pre-pressed and sealed, so that a closed filter chamber 12 is formed between the two adjacent filter plates 43. At this time, the material to be filtered can enter the filter chamber 12 for filtration. When the material completely fills the filter chamber 12, pressure can be continued to be applied, so that the elastic sealing rings 4305 on the two adjacent filter plates 43 are further squeezed. At this time, the height of the elastic sealing ring 4305 on the plate body 4301 changes, resulting in a change in the thickness of the filter chamber 12, so that the material in the filter chamber 12 is squeezed, and the water in the material is filtered out.

[0052] To facilitate the drainage of filtered water from the filter chamber 12, a water guide groove is provided on the front and / or back of the plate body 4301. A drainage hole 4310 communicating with the water guide groove is also provided on the plate body 4301. The outlet end of the drainage hole 4310 extends through the side of the plate body 4301. It should be noted that when the mesh plate 4303 is installed on both the front and back of the plate body 4301, the water guide groove is provided on both the front and back of the plate body 4301. When the mesh plate 4303 is installed on the front or back of the plate body 4301, the water guide groove is provided on the front and / or back of the plate body 4301. Furthermore, the plate body 4301 may have multiple drainage holes 4310. To facilitate drainage, the drainage holes 4310 are located at the bottom of the filter plate 43, based on the state of the filter plate 43 when in use.

[0053] As a further option of this embodiment, the edge of the filter cloth 4304 is flush with the edge of the plate body 4301, which not only covers the mesh plate 4303, but also allows the elastic sealing ring 4305 to be pressed against the filter cloth 4304 during installation and fixed to the plate body 4301, thereby performing a secondary fixation on the filter cloth 4304, making the filter cloth 4304 more stable and preventing the filter cloth 4304 from falling off.

[0054] As a further option of this embodiment, to facilitate installation of the elastic sealing ring 4305, the cross-section of the elastic sealing ring 4305 in this embodiment is L-shaped or ┻-shaped. During installation, a pressure strip 4306 can be press-fitted onto the horizontal portion of the elastic sealing ring 4305. The pressure strip 4306 is then screwed to the plate body 4301, thereby ensuring secure installation of the elastic sealing ring 4305. The pressure strip 4306 can be made of metal. To minimize the space in the filter chamber 12 during the secondary compression of the two filter plates 43, the vertical portion of the elastic sealing ring 4305 must be of sufficient height to ensure that when the elastic sealing ring 4305 is squeezed, the pressure strip 4306 mounted on the horizontal portion of the elastic sealing ring 4305 does not obstruct the squeezing of the vertical portion of the elastic sealing ring 4305.

[0055] As a further option of this embodiment, to ensure that the elastic sealing ring 4305 deforms sufficiently perpendicularly to the front surface of the plate body 4301 when squeezed, the elastic sealing ring 4305 can be designed with a hollow structure within its vertical portion, a channel extending along its path can be provided within its vertical portion, or a honeycomb structure can be directly provided within its vertical portion. Because the elastic sealing ring 4305 has a certain degree of elasticity, and the hollow or honeycomb structure within its vertical portion ensures that the elastic sealing ring 4305 deforms sufficiently perpendicularly to the front surface of the plate body 4301, and automatically resets itself after the squeeze force is lost. This not only ensures that the two filter plates 43 can form a sealed filter chamber 12 when pre-compressed, but also allows the two filter plates 43 to squeeze the material within the filter chamber 12 when re-compressed.

[0056] As a further option of this embodiment, in order to prevent the material from damaging the mesh plate 4303 by the force of the material reacting on the mesh plate 4303 during the filtration process, a high-strength steel mesh can be used for the mesh plate 4303. Of course, the mesh plate 4303 in this embodiment is not limited to a steel mesh. If the use requirements are met, the mesh plate 4303 can also be made of other metal materials.

[0057] As a further option of this embodiment, the edge of the mesh plate 4303 abuts against the inner side of the elastic sealing ring 4305, which ensures that the mesh plate 4303 covers the filter chamber 12 when the filter plate 43 is in use, and also allows the filter cloth 4304 to cover the entire mesh plate 4303 after installation. This also facilitates a better fit of the elastic sealing ring 4305 and the filter cloth 4304 during installation, making the installation of the sealing ring more stable. Of course, in this embodiment, the edge of the mesh plate 4303 can also be flush with the edge of the plate body 4301. While ensuring that the mesh plate 4303 covers the filter chamber 12, the size of the mesh plate 4303 and its placement on the plate body 4301 can be selected according to actual conditions.

[0058] As a further option of this embodiment, in order to allow the squeezed water to be discharged from the filter chamber 12 as much as possible, as shown in FIG. Figure 3As shown, the water guide groove in this embodiment includes an annular groove 4307 and a drainage groove 4309. The center of the annular groove 4307 coincides with the center of the through hole 4302, and the number of the drainage grooves 4309 can be equal to the number of the drainage holes 4310. One end of the drainage groove 4309 is connected to the drainage hole 4310, and the other end of the drainage groove 4309 is connected to the annular groove 4307. Of course, the annular groove 4307 in this embodiment can also be a circular groove. Under the premise of ensuring that the squeezed water can be discharged from the filter chamber 12 as much as possible, the number and shape of the annular grooves 4307 can be adjusted.

[0059] like Figure 2 As shown, in this embodiment, when the filter plate 43 is used on a filter press and multiple filter plates 43 are compressed to form multiple filter chambers 12, in order to ensure that the through holes 4302 on the plate body 4301 can connect two adjacent filter chambers 12, the mesh plate 4303 and the filter cloth 4304 on the plate body 4301 are designed to have holes corresponding to the through holes 4302 to prevent the mesh plate 4303 and the filter cloth 4304 from closing the through holes 4302 on the plate body 4301.

[0060] In an embodiment, when both the front and back sides of the plate body 4301 have water guide grooves, the water guide grooves on the front and back sides of the plate body 4301 can share the drainage hole 4310, so there is no need to separately open drainage holes 4310 on the plate body 4301 that are respectively connected to the water guide groove on the front side of the plate body 4301 and the water guide groove on the back side of the plate body 4301.

[0061] In this embodiment, the shape of the plate body 4301 can be circular, polygonal, etc. The shape of the elastic sealing ring 4305 can be the same as the shape of the plate body 4301, or the shape of the elastic sealing ring 4305 can be different from the shape of the plate body 4301. When the filter plates 43 in this embodiment are used on a filter press, multiple filter plates 43 are squeezed together to flatten the vertical portion of the elastic sealing ring 4305 on the filter plate 43, thereby changing the volume of the filter chamber 12 formed between two adjacent filter plates 43, thereby achieving squeezing and dehydrating the material in the filter chamber 12. Compared with a traditional plate and frame dehydrator, this dehydration method does not require a water inlet or an air filling cavity on the filter plate 43, so that the thickness of the filter plate 43 can be greatly reduced when the filter plate 43 is designed. Therefore, when the filter plates 43 are used on a filter press, the space occupied by the multiple filter plates 43 provided in this embodiment is smaller than the space occupied by the multiple filter plates 43 in a transmission plate and frame dehydrator with the same number of filter plates 43, so that the length of the frame 1 can be reduced when the filter press is designed, thereby reducing the area occupied by the filter press.

[0062] Example 2

[0063] like Figures 1 to 4As shown, this embodiment provides a filter press assembly 4, which is used on a filter press and includes a discharge pressure plate 42 and a boost pressure plate 41. A filter plate 43 module consisting of multiple filter plates 43 is provided between the discharge pressure plate 42 and the boost pressure plate 41. The filter plates 43 at one end of the filter plate 43 module are fixed to the discharge pressure plate 42, and the filter plates 43 at the other end of the filter plate 43 module are fixed to the boost pressure plate 41. A scissor structure is connected between two adjacent filter plates 43, and the two adjacent scissor structures are hinged. There are two scissor structures connecting the two adjacent filter plates 43. Based on the state of the filter plate 43 when in use, the two scissor structures are respectively located on the front and back surfaces of the filter plate 43.

[0064] By connecting a scissor structure between two adjacent filter plates 43, when the filter press assembly 4 is in use and the discharge pressure plate 42 or the boost pressure plate 41 is driven to move horizontally, the discharge pressure plate 42 or the boost pressure plate 41 moves while driving the filter plate 43 to move. When the filter plate 43 moves, the scissor structure between the two adjacent filter plates 43 opens or closes, and the scissor structure will drive the adjacent scissor structures to open and close when opening or closing, so that multiple filter plates 43 will move synchronously. Compared with the hinge connection between two adjacent filter plates 43 in the prior art, the separation and closing of multiple filter plates 43 are faster and more convenient. Compared with the traditional plate and frame dewatering machine, when the filter press assembly 4 provided in this embodiment is installed on the filter press frame 1, the separation and closing of multiple filter plates 43 can be achieved without installing a plate pulling robot on the filter press frame 1, so that the structure of the filter press is simpler.

[0065] As a further option of this embodiment, Figure 4 As shown, the scissor-fork structure includes two cross-hinged connecting rods 44. In this case, the lower ends of the two connecting rods 44 are respectively hinged to the two filter plates 43, and the upper ends of the two connecting rods 44 are respectively hinged to the connecting rods 44 in two other adjacent scissor-fork structures. At the same time, the connecting rods 44 close to each other at the lower parts of the two adjacent scissor-fork structures are jointly hinged to the same filter plate 43. It should be noted here that the hinge points of the two adjacent scissor-fork structures hinged to the same filter plate 43 can be the same point, or the hinge points of the two adjacent scissor-fork structures hinged to the same filter plate 43 can be different points.

[0066] As a further option for this embodiment, the filter plates 43 in this embodiment may also be the filter plates 43 provided in Example 1. Of course, the filter plates 43 in this embodiment may also be existing filter plates 43 in existing filter presses. Specifically, the scissor-type structure provided in this embodiment, connecting the discharge plate 42 and filter plate 43, two adjacent filter plates 43, and the filter plate 43 and booster plate 41, is applicable to both the filter press assembly 4 composed of the filter plates 43 in Example 1 and the filter press assembly 4 in conventional plate and frame dehydrators.

[0067] It should be noted that, to facilitate material injection, injection holes corresponding to the through holes 4302 on the filter plates 43 are provided on the discharge plate 42 or the boost plate 41. When the filter press assembly 4 has a discharge plate 42 and a boost plate 41 at either end, the filter plates 43 at the two ends of the filter press assembly 4 can be fitted and fixed to the discharge plate 42 and the boost plate 41, respectively. In this case, the side of the filter plate 43 closest to the discharge plate 42 or the boost plate 41 can be directly flat (eliminating the water guide groove, mesh plate 4303, filter cloth 4304, elastic sealing ring 4305, etc.).

[0068] The working principle of the filter press assembly 4 in this embodiment is as follows: before the material is injected, the multiple filter plates 43 are folded together and a pre-pressure is applied to pre-tighten the elastic sealing rings 4305 on the two adjacent filter plates 43, and a closed filter chamber 12 is formed between the two adjacent filter plates 43. Since each filter plate 43 has a through hole 4302, when the multiple filter plates 43 are closed and pre-tightened, the multiple filter chambers 12 are connected through the through hole 4302; then, the material is injected into the filter chamber 12 formed between the first filter plate 43 and the second filter plate 43 through the injection hole. Since the multiple filter chambers 12 are connected, As a result, the material enters multiple filter chambers 12 respectively; when the filling is completed, the multiple filter plates 43 continue to squeeze, the elastic sealing ring 4305 on the filter plate 43 is flattened, the thickness of the filter chamber 12 is reduced, the material in the filter chamber 12 is squeezed, and the moisture in the material passes through the filter cloth 4304 into the annular groove 4307 and is discharged from the drainage hole 4310 through the drainage groove 4309, thereby achieving extrusion and dehydration of the material; when dehydration is completed, the multiple filter plates 43 are separated, and the filter chamber 12 formed between two adjacent filter plates 43 is opened, and the extruded and dehydrated material falls out of the filter chamber 12.

[0069] Example 3

[0070] like Figures 1 to 5 As shown, this embodiment provides a filter press dehydrator, including a frame 1, on which a discharge cylinder 2 and a boost cylinder 3 are installed, and the discharge cylinder 2 and the boost cylinder 3 are respectively installed at both ends of the frame 1, and the output end of the discharge cylinder 2 and the output end of the boost cylinder 3 both extend toward the middle of the frame 1, and the filter press assembly 4 in Example 2 is installed between the discharge cylinder 2 and the boost cylinder 3. Specifically, the discharge pressure plate 42 in the filter press assembly 4 is fixed at the output end of the discharge cylinder 2, and the boost pressure plate 41 in the filter press assembly 4 is fixed at the output end of the boost cylinder 3.

[0071] To ensure that the filter plate 43, the discharge pressure plate 42, and the supercharging pressure plate 41 can be slidably supported on the frame 1, cantilever beams 5 extending along the axial direction of the frame 1 are installed on both sides of the frame 1. The discharge pressure plate 42, the supercharging pressure plate 41, and the filter plate 43 are each provided with a mounting lug 6 on the front and rear sides. The mounting lug 6 has a rotating roller. The discharge pressure plate 42, the supercharging pressure plate 41, and the filter plate 43 are supported on the two cantilever beams 5 on the front and rear sides via the rollers on the mounting lugs 6. The cooperation between the rollers and the cantilever beams 5 not only supports the discharge pressure plate 42, the supercharging pressure plate 41, and the filter plate 43, but also ensures smooth movement of the filter plate 43, the discharge pressure plate 42, and the supercharging pressure plate 41. To prevent the rollers from detaching from the cantilever beam 5 when rolling along the cantilever beam 5, the cantilever beam 5 can be constructed of a channel steel structure.

[0072] As a further option of this embodiment, Figure 5 As shown, a hopper 7, a feed pump 8, and a conveyor belt 9 are further mounted on the frame 1. The inlet end of the feed pump 8 is connected to the outlet end of the hopper 7, and the outlet end of the feed pump 8 is connected to the injection hole, and the conveyor belt 9 is located below the filter press assembly 4. Specifically, the arrangement of the hopper 7, the feed pump 8, and the conveyor belt 9 is the same as that of the hopper 7, the feed pump 8, and the conveyor belt 9 on the existing filter press. The functions of the hopper 7, the feed pump 8, and the conveyor belt 9 in this embodiment are the same as those of the hopper 7, the feed pump 8, and the conveyor belt 9 on the existing filter press, and therefore, they will not be described in detail here.

[0073] As a further option of this embodiment, in order to facilitate the control of the separation and extrusion of multiple filter plates 43, a limiting structure is also provided on the frame 1, and there are two limiting structures. The two limiting structures limit the unloading pressure plate 42 and the boosting pressure plate 41 respectively. Specifically, when the unloading cylinder 2 is extended or retracted, the limiting structure can limit the boosting pressure plate 41, and when the boosting cylinder 3 is extended or retracted, the limiting structure can limit the unloading pressure plate 42.

[0074] To automatically control the position of the discharge platen 42 and the boost platen 41, the limiting structure includes a locking cylinder 10 and a locking block 11. The locking cylinder 10 is fixed to the frame 1, and the locking block 11 is fixed to the output end of the locking cylinder 10. When the discharge platen 42 needs to be limited, the locking cylinder 10 corresponding to the discharge platen 42 extends, causing the locking block 11 on the locking cylinder 10 to limit the discharge platen 42; when the boost platen 41 needs to be limited, the locking cylinder 10 corresponding to the boost platen 41 extends, causing the locking block 11 on the locking cylinder 10 to limit the boost platen 41.

[0075] As a further option of this embodiment, in order to save the space occupied by the scissor-type structure and the hanging ear 6 on the side of the filter plate 43, based on the state of the filter plate 43 when in use, the hanging ear 6 is located at the upper end of the filter plate 43, and the lower end of the connecting rod 44 in the scissor-type structure is hinged to the hanging ear 6, and the upper end of the connecting rod 44 in the scissor-type structure is not hinged to the filter plate 43.

[0076] In this embodiment, in the initial state, the two locking cylinders 10 are in a retracted state, the unloading cylinder 2 is in an extended state, and the boosting cylinder 3 is in a retracted state. The unloading cylinder 2 pushes the unloading pressure plate 42 toward the boosting cylinder 3 while extending, and the unloading pressure plate 42 drives the filter plate 43 fixed thereto to move synchronously while moving. Since a scissor structure is connected between two adjacent filter plates 43, the filter plate 43 fixed to the unloading pressure plate 42 moves while the connecting rod 44 in the scissor structure swings, and the connecting rod 44 swings while driving the adjacent filter plates 43 to move, so that multiple filter plates 43 When the filter plates 43 are pre-pressed due to the force of the discharge cylinder 2, the elastic sealing rings 4305 on the two adjacent filter plates 43 are pre-pressed and sealed, and a sealed filter chamber 12 is formed between the two adjacent filter plates 43; then, the locking cylinder 10 corresponding to the discharge pressure plate 42 is in an extended state, and the locking block 11 on the locking cylinder 10 restricts the discharge pressure plate 42 from moving away from the boost pressure plate 41, and the injection pump is started. The injection pump pumps the material in the hopper 7 into the filter chamber 12 through the injection hole. Since each filter plate 43 has a through hole 4302, multiple filter plates 43 are pre-pressed and sealed. When the filter plate 43 is pre-tightened, multiple filter chambers 12 are connected through the through holes 4302 on the filter plate 43, and the material injected from the injection hole into the filter chamber 12 can fill multiple filter chambers 12; after the injection is completed, the booster cylinder 3 extends, and at the same time, the booster cylinder 3 extends and pushes the booster pressure plate 41 to move toward the discharge cylinder 2, and the booster pressure plate drives the filter plate 43 fixed thereto to move synchronously while moving. Since a scissor structure is connected between two adjacent filter plates 43, the filter plate 43 fixed to the booster pressure plate 41 moves, and the connecting rod 44 in the scissor structure swings while the filter plate 43 The plate 43 moves, causing the multiple filter plates 43 to move synchronously toward the discharge cylinder 2, so that the multiple filter plates 43 continue to be compressed. During this process, the elastic sealing ring 4305 on the filter plate 43 is flattened, the thickness of the filter chamber 12 is reduced, the material in the filter chamber 12 is squeezed, and the moisture in the material passes through the filter cloth 4304 into the annular groove 4307 and is discharged from the drainage hole 4310 through the drainage groove 4309, thereby achieving the squeezing and dehydration of the material. The locking cylinder 10 corresponding to the boosting plate 41 extends, and the locking block 11 on the locking cylinder 10 limits the boosting plate 41 from moving in the contraction direction of the boosting cylinder 3;When the dehydration time is reached, the locking cylinder 10 corresponding to the boosting plate 41 contracts, and the locking block 11 on the locking cylinder 10 loses its restriction on the boosting plate 41, and the boosting cylinder 3 contracts. When the boosting cylinder 3 contracts, it drives the boosting plate 41 to move, and when the boosting plate 41 moves, it drives the filter plate 43 fixed thereto to move synchronously. Since a scissor structure is connected between two adjacent filter plates 43, the filter plate 43 fixed to the boosting plate 41 moves while the connecting rod 44 in the scissor structure swings, and when the connecting rod 44 swings, it drives the adjacent filter plates 43 to move, so that multiple filter plates 43 move synchronously toward the boosting cylinder 3, so that multiple filter plates 43 return to the pre-tightened state, and then the locking cylinder 10 corresponding to the unloading plate 42 contracts. The locking block 11 on the locking cylinder 10 loses its restriction on the discharge pressure plate 42, and the discharge cylinder 2 contracts. The contraction of the discharge cylinder 2 drives the discharge pressure plate 42 to move, and the movement of the discharge pressure plate 42 drives the filter plate 43 fixed to it to move synchronously. Since a scissor structure is connected between two adjacent filter plates 43, the filter plate 43 fixed to the discharge pressure plate 42 moves, and the connecting rod 44 in the scissor structure swings. The swinging of the connecting rod 44 drives the adjacent filter plates 43 to move, so that the multiple filter plates 43 move synchronously toward the discharge cylinder 2, separating the multiple filter plates 43. The filter chamber 12 between the two adjacent filter plates 43 opens, and the filtered material in the filter chamber 12 falls out, falls onto the conveyor belt, and is finally sent out via the conveyor belt.

[0077] Example 4

[0078] like Figures 1 to 4 、 Figure 6 As shown, this embodiment 4 provides a filter press dehydrator. The difference between the filter press dehydrator provided in this embodiment 4 and the filter press dehydrator provided in embodiment 3 is that: there are two filter press assemblies, namely filter press assembly Ⅰ4-1 and filter press assembly Ⅱ4-2; there are two unloading oil cylinders, namely unloading oil cylinder Ⅰa2-1 and unloading oil cylinder Ⅱa2-2; there are two groups of locking oil cylinders, and the two groups of locking oil cylinders correspond to the filter press assembly Ⅰ4-1 and the filter press assembly Ⅱ4-2 respectively. There are two locking oil cylinders in each group, and the locking blocks on the two locking oil cylinders in each group correspond to the unloading pressure plate and the boosting pressure plate in the filter press assembly respectively. The four locking oil cylinders They are locking cylinder Ⅰb10-1, locking cylinder Ⅱb10-2, locking cylinder Ⅲb10-3, and locking cylinder Ⅳb10-4 respectively. The locking blocks installed on the four locking cylinders are locking block Ⅰc11-1, locking block Ⅱc11-2, locking block Ⅲc11-3, and locking block Ⅳc11-4 respectively. The unloading pressure plate in the filter press assembly Ⅰ4-1 is unloading pressure plate Ⅰd411, the boosting pressure plate in the filter press assembly Ⅰ4-1 is boosting pressure plate Ⅰe421, the unloading pressure plate in the filter press assembly Ⅱ4-2 is unloading pressure plate Ⅱd412, and the boosting pressure plate in the filter press assembly Ⅱ4-2 is boosting pressure plate Ⅱe422.

[0079] In this embodiment, the boosting pressure plate Ⅰe421 in the filter press assembly Ⅰ4-1 is fixed to the output end of the boosting cylinder 3, the unloading pressure plate Ⅱd412 in the filter press assembly Ⅱ4-2 is fixed to the fixed end of the boosting cylinder 3, the unloading cylinder Ⅰa2-1 is fixed to the unloading pressure plate Ⅰd411 in the filter press assembly Ⅰ4-1, and the unloading cylinder Ⅱa2-2 is fixed to the boosting pressure plate Ⅱe422 in the filter press assembly Ⅱ4-2.

[0080] In this embodiment, initially, the locking cylinder Ⅰb10-1 and the locking cylinder Ⅱb10-2 are both in a retracted state, the unloading cylinder Ⅰa2-1 extends, and the boost cylinder 3 contracts. The unloading cylinder Ⅰa2-1 pushes the unloading pressure plate Ⅰd411, and the unloading pressure plate Ⅰd411 drives the filter plate 43 fixed thereto to move synchronously while moving. Since a scissor structure is connected between two adjacent filter plates 43, the filter plate 43 fixed to the unloading pressure plate Ⅰd411 is swung in the scissor structure while moving. The swing of the connecting rod 44 drives the adjacent filter plates 43 to move, so that multiple filter plates 43 are synchronously moved toward the boost cylinder 3. When multiple filter plates 43 in the filter press assembly Ⅰ4-1 are When pre-tightened by the force of the unloading cylinder Ⅰa2-1, the elastic sealing rings 4305 on the two adjacent filter plates 43 in the filter press assembly Ⅰ4-1 are pre-tightened and sealed, and a sealed filter chamber 12 is formed between the two adjacent filter plates 43; then, the locking cylinder Ⅰb10-1 corresponding to the unloading pressure plate Ⅰd411 is in an extended state, and the locking block Ⅰc11-1 on the locking cylinder Ⅰb10-1 restricts the unloading pressure plate Ⅰd411 from moving away from the boosting pressure plate Ⅰe421, and the injection pump is started. The injection pump pumps the material in the hopper 7 into the filter chamber 12 through the injection hole. Since each filter plate 43 has a through hole 4302, when multiple filter plates 43 are pre-tightened, multiple filter chambers 12 pass through The through holes 4302 on the filter plates 43 are connected, and the material injected from the injection hole into the filter chamber 12 can fill multiple filter chambers 12; after the injection is completed, the booster cylinder 3 extends, and at the same time, the booster cylinder 3 extends and pushes the booster pressure plate Ⅰe421 to move toward the discharge cylinder, and the booster pressure plate Ⅰe421 drives the filter plates 43 fixed thereto to move synchronously while moving. Since a scissor structure is connected between two adjacent filter plates 43, the filter plates 43 fixed to the booster pressure plate Ⅰe421 move while the connecting rod 44 in the scissor structure swings, and the connecting rod 44 swings while driving the adjacent filter plates 43 to move, so that the multiple filter plates 43 move synchronously toward the discharge cylinder Ⅰa2-1, so that the multiple filter plates 43 continue to be pressed. During this process, the elastic sealing ring 4305 on the filter plate 43 is flattened, the thickness of the filter chamber 12 is reduced, the material in the filter chamber 12 is squeezed, and the moisture in the material passes through the filter cloth 4304 into the annular groove 4307 and is discharged from the drainage hole 4310 through the drainage groove 4309, thereby realizing the extrusion and dehydration of the material. The locking cylinder Ⅱb10-2 corresponding to the boosting plate Ⅰe421 extends, and the locking block Ⅱc11-2 on the locking cylinder Ⅱb10-2 restricts the boosting plate Ⅰe421 from moving in the contraction direction of the boosting cylinder 3. At this time, the locking block Ⅰc11-1 and the locking block Ⅱc11-2 cooperate to lock the filter press assembly Ⅰ4-1, so that the filter press assembly Ⅰ4-1 is in the filter pressing state.

[0081] Since the time required for the filter press assembly I4-1 to be in the injection state and the filter press state is 40min to 60min, when the filter press assembly I4-1 is in the filter press state, the boost cylinder 3 contracts, and in the filter press assembly II4-2, the locking cylinder IIIb10-3 corresponding to the discharge pressure plate IId412 contracts, and the locking block IIIc11-3 on the locking cylinder IIIb10-3 loses the restriction on the discharge pressure plate IId412, and the boost cylinder 3 contracts. The unloading pressure plate Ⅱd412 is driven to move while shrinking, and the unloading pressure plate Ⅱd412 drives the filter plate 43 fixed thereto to move synchronously while moving. Since a scissor structure is connected between two adjacent filter plates 43, the filter plate 43 fixed to the unloading pressure plate Ⅱd412 is made to move while the connecting rod 44 in the scissor structure swings, and the connecting rod 44 drives the adjacent filter plates 43 to move while swinging, so that multiple filter plates 43 are synchronously moved toward the booster cylinder 3, so that multiple filter plates 43 are It returns to the pre-tightened state, and then the locking cylinder IVb10-4 corresponding to the booster plate IIe422 contracts, and the locking block IVc11-4 on the locking cylinder IVb10-4 loses its restriction on the booster plate IIe422, and the unloading cylinder IIa2-2 contracts. When the unloading cylinder IIa2-2 contracts, it drives the booster plate IIe422 to move, and when the booster plate IIe422 moves, it drives the filter plate 43 fixed thereto to move synchronously. Due to the gap between the two adjacent filter plates 43, the filter plate 43 is not fixed thereto. A scissor structure is connected in between, so that the filter plate 43 fixed to the booster plate IIe422 moves and the connecting rod 44 in the scissor structure swings. The connecting rod 44 swings and drives the adjacent filter plates 43 to move, so that multiple filter plates 43 move toward the unloading cylinder synchronously, so that multiple filter plates 43 are separated, and the filter chamber 12 between two adjacent filter plates 43 is opened. The material after filtration in the filter chamber 12 automatically falls out, and the fallen material falls onto the conveyor belt and is finally sent out through the conveyor belt.

[0082] Since the filter press assembly Ⅱ4-2 is still in the filter press state after the filter press assembly Ⅰ4-1 is unloaded, the booster cylinder 3 is extended after the unloading of the filter press assembly Ⅱ4-2 is completed, and the booster cylinder 3 pushes the unloading pressure plate Ⅱd412. The unloading pressure plate Ⅱd412 drives the filter plate 43 fixed thereto to move synchronously while moving. Since a scissor structure is connected between two adjacent filter plates 43, the filter plate 43 fixed to the unloading pressure plate Ⅱd412 is made to swing while moving. The connecting rod 44 in the scissor structure drives the adjacent filter plates 43 to move while swinging, so that multiple filter plates 43 are moved synchronously toward the unloading cylinder Ⅰa2-1. When the multiple filter plates 43 in the filter press assembly Ⅱ4-2 are pre-tightened due to the force of the booster cylinder 3, When the pressure filter assembly Ⅱ4-2 is in the state of being pressed, the elastic sealing rings 4305 on the two adjacent filter plates 43 are pre-tightened and sealed, and a sealed filter chamber 12 is formed between the two adjacent filter plates 43; then, the locking cylinder Ⅲb10-3 corresponding to the boosting cylinder 3 is in an extended state, and the locking block Ⅲc11-3 on the locking cylinder Ⅲb10-3 restricts the unloading pressure plate Ⅱd412 from moving away from the boosting pressure plate Ⅱe422, and the injection pump is started. The injection pump pumps the material in the hopper 7 into the filter chamber 12 through the injection hole. Since each filter plate 43 has a through hole 4302, when multiple filter plates 43 are pre-tightened, multiple filter chambers 12 are connected through the through holes 4302 on the filter plates 43, and the material injected into the filter chamber 12 by the injection hole can fill multiple filter chambers 12.

[0083] When the filter press assembly Ⅱ4-2 enters the injection state, the locking block Ⅲc11-3 on the locking cylinder Ⅲb10-3 restricts the discharge pressure plate Ⅱd412 from moving away from the boosting pressure plate Ⅱe422. Therefore, at this time, the locking cylinder Ⅱb10-2 in the filter press assembly Ⅰ4-1 contracts, and the locking block Ⅱc11-2 on the locking cylinder Ⅱb10-2 loses the lock on the boosting pressure plate Ⅰe421, and the boosting cylinder 3 contracts. When the boosting cylinder 3 contracts, it drives the boosting pressure plate Ⅰe421 to move. When the boosting pressure plate Ⅰe421 moves, it drives the filter plate 43 fixed thereto to move synchronously. Since a scissor structure is connected between two adjacent filter plates 43, the filter plate 43 fixed to the boosting pressure plate Ⅰe421 moves while the connecting rod 44 in the scissor structure swings. When the connecting rod 44 swings, it drives the adjacent filter plates 43 to move, so that multiple filter plates 43 move synchronously toward the boosting cylinder 3, so that multiple filter plates 43 move synchronously. 3 returns to the pre-tightening state; then, the locking cylinder Ⅰb10-1 in the filter press assembly Ⅰ4-1 contracts, and the locking block Ⅰc11-1 on the locking cylinder Ⅰb10-1 loses the lock on the discharge pressure plate Ⅰd411. The discharge cylinder Ⅰa2-1 contracts and drives the discharge pressure plate Ⅰe to move. The discharge pressure plate Ⅰe drives the filter plate 43 fixed thereto to move synchronously while moving. Since a scissor structure is connected between two adjacent filter plates 43, the filter plate 43 fixed to the discharge pressure plate Ⅰe moves while the connecting rod 44 in the scissor structure swings. The connecting rod 44 swings and drives the adjacent filter plates 43 to move, so that the multiple filter plates 43 move synchronously toward the discharge cylinder, so that the multiple filter plates 43 are separated, and the filter chamber 12 between the two adjacent filter plates 43 is opened. The filtered material in the filter chamber 12 falls out, and the fallen material falls onto the conveyor belt and is finally sent out through the conveyor belt. The filter press assembly Ⅰ4-1 is unloaded.

[0084] Next, the filter press component I4-1 repeats the above steps and enters the filling state. When the filter press component I4-1 is in the filling state, the filter press component II4-2 gradually enters the unloading and filling state. When the filter press component II4-2 is in the filling state, the filter press component I4-1 is in the filtration state. After the filling of the filter press component II4-2 is completed, it enters the filtration state. When the filter press component II4-2 is in the filtration state, the filter press component I4-1 enters the unloading and filling state, and repeats this process.

[0085] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0086] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0087] Those skilled in the art will appreciate that the above embodiments are merely for the purpose of illustrating the present invention and are not intended to limit the scope of the present invention. Other variations or modifications may be made based on the above disclosure, and such variations or modifications are still within the scope of the present invention.

Claims

1. A filter plate for a filter press, characterized in that: It includes a plate body with a through hole, a mesh plate laid on the front and / or back of the plate body, the mesh plate covered with filter cloth, and elastic sealing rings fixed on both sides of the plate body, the height of the elastic sealing ring can change when the plate body is squeezed; a water guide groove is also opened on the front and / or back of the plate body, and a drainage hole connected to the water guide groove is also opened on the plate body.

2. The filter plate of the filter press according to claim 1, characterized in that: The edge of the filter cloth is flush with the edge of the plate body, and the elastic sealing ring is pressed and fixed on the filter cloth.

3. The filter plate of the filter press according to claim 1, characterized in that: The cross section of the elastic sealing ring is L-shaped or ┻-shaped, and a pressure strip for pressing the horizontal section of the elastic sealing ring is fixed on the filter plate.

4. The filter plate of the filter press according to claim 1, characterized in that: The extrusion portion of the elastic sealing ring is a hollow structure or a honeycomb structure.

5. The filter plate of the filter press according to claim 1, characterized in that: The mesh plate is a steel mesh.

6. The filter plate of the filter press according to claim 1, characterized in that: The edge of the mesh plate abuts against the inner side of the elastic sealing ring, or the edge of the mesh plate is flush with the edge of the plate body.

7. The filter plate of the filter press according to any one of claims 1 to 6, characterized in that: The water guide groove includes an annular groove, a straight groove and a drainage groove. There are multiple annular grooves, straight grooves and drainage grooves. The multiple annular grooves are concentrically arranged at intervals. The multiple straight grooves are evenly spaced along the width direction of the plate body. The drainage groove extends radially toward the annular groove, and the annular groove, straight groove and drainage groove are connected to each other. The end of the drainage groove close to the edge of the plate body is connected to the drainage hole.

8. A filter press assembly, characterized in that: It includes a discharge pressure plate and a boost pressure plate. A filter plate module composed of multiple filter plates is arranged between the discharge pressure plate and the boost pressure plate. The filter plates at both ends of the filter plate module are respectively fixed to the discharge pressure plate and the boost pressure plate, and a scissor structure is connected between two adjacent filter plates.

9. The filter press assembly according to claim 8, characterized in that The scissor-fork structure includes two cross-hinged connecting rods, and the same side of the two connecting rods is hinged to the two filter plates respectively.

10. The filter press assembly according to claim 9, characterized in that The filter plate includes a plate body with a through hole, a mesh plate laid on the front and / or back of the plate body, the mesh plate covered with filter cloth, and elastic sealing rings fixed on both sides of the plate body, the height of the elastic sealing ring can change when the plate body is squeezed; a water guide groove is also opened on the front and / or back of the plate body, and a drainage hole connected to the water guide groove is also opened on the plate body.

11. The filter press assembly according to claim 10, characterized in that The edge of the filter cloth is flush with the edge of the plate body, and the elastic sealing ring is pressed and fixed on the filter cloth.

12. The filter press assembly according to claim 10, characterized in that The cross section of the elastic sealing ring is L-shaped or ┻-shaped, and a pressure strip for pressing the horizontal section of the elastic sealing ring is fixed on the filter plate.

13. The filter press assembly according to claim 10, characterized in that The extrusion portion of the elastic sealing ring is a hollow structure or a honeycomb structure.

14. The filter press assembly according to claim 10, wherein: The mesh plate is a steel mesh.

15. The filter press assembly according to claim 10, wherein: The edge of the mesh plate abuts against the inner side of the elastic sealing ring, or the edge of the mesh plate is flush with the edge of the plate body.

16. The filter press assembly according to claim 10, wherein: The water guide groove includes an annular groove, and a drainage groove is connected between the annular groove and the drainage hole.

17. A filter press dehydrator, characterized in that: It includes a frame on which a discharge cylinder and a boost cylinder are installed. The filter press assembly described in any one of claims 9 to 16 is installed between the discharge cylinder and the boost cylinder, and cantilever beams are provided on both sides of the frame. Hanging ears are also installed on two opposite sides of the discharge pressure plate, the boost pressure plate and the filter plate, and the hanging ears are slidably supported on the cantilever beams.

18. The filter press dehydrator according to claim 17, characterized in that: A hopper, a feeding pump and a conveyor belt are also installed on the frame. The inlet end of the feeding pump is connected to the outlet end of the hopper, the outlet end of the feeding pump is connected to the injection hole, and the conveyor belt is located below the filter press assembly.

19. The filter press dehydrator according to claim 17, characterized in that: The frame is also provided with a limiting structure for limiting the unloading pressure plate and the boosting pressure plate.

20. The filter press dehydrator according to claim 19, characterized in that: The limiting structure includes a locking oil cylinder installed on the frame, and a locking block is also installed at the output end of the locking oil cylinder.

21. The filter press dehydrator according to claim 17, characterized in that: The hinge point between the connecting rod and the filter plate is located on the hanging ear.

22. The filter press dehydrator according to claim 17, characterized in that: There are two groups of filter press assemblies and two unloading cylinders, which are respectively located at both ends of the frame. The inner ends of the two groups of filter press assemblies are respectively connected to the two ends of the boosting cylinder, and the outer ends of the two groups of filter press assemblies are respectively connected to the two unloading cylinders.

Images