A filter press combination mechanism

Abstract

The present invention discloses a filter press assembly mechanism, comprising a water mold and a material mold arranged alternately and side by side; the water mold water-receiving part of the water mold and the diaphragm layer form a filter press chamber, the water mold frame part is fixed with a pressing part, and the diaphragm layer covering the water mold frame part is at least partially clamped and fixed by the pressing part and the water mold frame part; the material mold holding part of the material mold is provided with a close-fitting material mold permeable layer, which has a certain maintainable thickness and can flow water, and the material mold permeable layer is connected to the drainage main channel in the material mold partition. The beneficial effect of the present invention is that the filter press effect and filter press efficiency can be comprehensively and fully improved.

Description

Technical Field

[0001] The invention relates to a filter pressing combined mechanism, which is mainly used in the technical field of mud filter pressing. Background Art

[0002] The filter press uses a special filter medium to apply a certain pressure to the object, so that the liquid is dialyzed out. It is a kind of mechanical equipment, which is commonly used for solid-liquid separation equipment. The filtering mechanism of the filter press is mainly composed of multiple alternating and parallel material membranes and water molds. The adjacent material molds and water molds are pressed by the pressing mechanism of the filter press. The slurry is injected into the material chamber between the material mold partition and the filter cloth. The slurry is initially filtered through the material chamber to filter part of the water. Then the filtered water is injected into the filter chamber between the water mold partition and the diaphragm layer. The water is filtered through the gradual expansion of the filter chamber. Finally, the slurry forms a cake. Among them, the extrusion filtration of the filter chamber is the most important means of filtration and determines the filtration effect of the slurry.

[0003] In the prior art, the portion of the diaphragm layer located in the end face range of the water mold partition is covered but not fixed on the end face. The sealing of the filter press chamber depends on the compression between the water mold and the material mold. Therefore, impurities carried by the filter press water, especially solid particle impurities, easily enter the diaphragm layer and the portion of the water mold partition end face corresponding to the diaphragm layer, which will cause the compressed portion of the diaphragm layer to be uneven and deformed or even damaged under high pressure extrusion, destroying the sealing of the filter press chamber and affecting the filter press effect of the slurry. In addition, the opening between the water mold and the material mold will release the sealing of the filter press chamber. Therefore, the filter press water in the filter press chamber must be drained after the filter press is completed. If the water mold and the material film are opened in advance, the filter press water will seep out from between the diaphragm layer and the end face of the water mold partition and penetrate into the filter cake. It takes a long time to drain the filter press water from the filter press chamber, affecting the filter press efficiency.

[0004] For example, the prior art publication number CN104225985A discloses a high-pressure filter press device, in which at least one of the two sides of the water mold is provided with a water mold storage part, and the water mold storage part is provided with a plurality of water inlet holes, one end of the water inlet main channel serves as the entrance of the water mold, and the other end extends to the inside of the water mold and is connected with the water inlet hole, the surface of the water mold storage part is sequentially covered with a diaphragm rubber and a water mold filter cloth, and a boss is also provided along the edge of the water mold storage part for pressing the diaphragm rubber, the water mold filter cloth, and the material mold filter cloth to achieve a sealing effect, thereby improving the sealing performance of the material mold and the water mold during mold closing and filter pressing, and preventing leakage. The diaphragm rubber (diaphragm layer) of the water mold covers the surface of the water mold storage part, and it is not sealed with the side of the water mold. The sealing of the filter press chamber also completely depends on the boss of the water mold and the material film being pressed against each other during mold closing. The above-mentioned technical problems have not been solved.

[0005] For another example, prior art publication number CN107050947A discloses a deep dehydration filter press device, in which concave arc-shaped or bent material holding portions are provided on both sides of the diaphragm filter plate, and the side of the non-diaphragm filter plate facing the diaphragm filter plate is covered with filter cloth, and a punching plate is provided between the filter cloth and the non-diaphragm filter plate, and both sides of the diaphragm filter plate are covered with elastic diaphragms, which may be solid diaphragms or hollow diaphragms, and the fixed connection point between the diaphragm and the diaphragm filter plate is located outside the water holding cavity, and may be provided only on the top surface or the side of the top frame of the diaphragm filter plate, and the other end of the diaphragm is free to fall vertically, and when the diaphragm filter plate and the non-diaphragm filter plate are in contact, the diaphragm is clamped between the diaphragm filter plate and the non-diaphragm filter plate. Although there is a fixed connection point between the diaphragm (diaphragm layer) and the membrane filter plate (water-molded diaphragm), the fixed connection point is not located at the edge of the filter press chamber formed by the diaphragm and the membrane filter plate, and the point-fixed connection between the diaphragm and the membrane filter plate is not sealed, so the above-mentioned problems are not solved.

[0006] In addition, during the filtration process of the material mold and the water mold on the slurry material when the mold is closed, the efficiency of the slurry material filtering water in the material mold storage chamber is crucial to the overall efficiency of the filtration. The high-pressure filter press device of the prior art publication number CN104225985A is provided with a feed channel connected to the feed pipe at the upper part of the material mold, and a material mold drainage channel connected to the material mold drainage pipe at the lower part, and at least one of the two side surfaces of the material mold is provided with a material mold storage part. In this embodiment, both sides of the material mold are provided with a material mold storage part, and the material mold storage part is evenly spaced with a plurality of material mold water guide grooves, and the bottom of each material mold water guide groove is provided with a material mold drainage hole, and the material mold drainage channel extends inward from the edge of the material mold and is connected to the material mold drainage hole. This drainage method has the following defects: first, the water in the slurry is squeezed and filtered and discharged from the drainage holes of the material mold. Due to the layout position and number of the drainage holes in the material mold, this drainage method is local filtration and local drainage. In addition, the circulation of water in the slurry is in a solid-liquid mixed environment, and the water filtration efficiency and circulation efficiency are both low; in addition, since the drainage holes of the material mold are in direct contact with the slurry, the drainage holes of the material mold are easily blocked during the drainage process, and some solid components with smaller particle sizes in the slurry will also be discharged from the material mold through the drainage holes. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a water model which can comprehensively and fully improve the filtration effect and filtration efficiency.

[0008] The present invention is achieved through the following technical solutions.

[0009] A filter press assembly mechanism, comprising a water mold and a material mold alternately arranged side by side;

[0010] The water mold includes a water mold partition, and its front and rear end surfaces have a water film material holding part sunken in the middle, a water mold frame part around the periphery, and a water mold connecting part connecting the two. The water mold water holding part and the diaphragm layer form a filter press chamber. The water mold frame part is fixed with a pressing part. The diaphragm layer covering the water mold frame part is at least partially clamped and fixed by the pressing part and the water mold frame part, and the clamped part of the diaphragm layer is in a closed belt shape with a certain width.

[0011] The material mold includes a material mold partition, and its front and rear end faces are covered with filter cloth layers to form a material holding chamber. The end face of the material mold partition has a material film holding portion with a recessed middle portion, a material mold frame portion around the periphery, and a material mold connecting portion connecting the two. The material mold holding portion is provided with a tightly attached material mold water-permeable layer, which has a certain maintainable thickness and can flow water. The material mold water-permeable layer is connected to the main drainage channel in the material mold partition.

[0012] For water molds, in the prior art, most of the solid particle impurities are carried into the filter press by the filter press water and remain in the filter press chamber, such as sand, clay, etc. After the solid particle impurities enter between the diaphragm layer and the water mold frame, the diaphragm layer will have a local "bulge" phenomenon. Under the high pressure of the mold closing, the diaphragm layer at the "bulge" is deformed (most of which is irreversible deformation) or even damaged and opened. On the one hand, the service life of the diaphragm layer is shortened, and on the other hand, the diaphragm layer that has been irreversibly damaged may affect the sealing of the filter press chamber, that is, water seepage occurs when the filter press water is injected, resulting in a significant impact on the filter press effect of the slurry. For the present invention, whether the water mold is in a mold closing state (tightly pressed between the water mold and the material mold) or a non-molding state (open between the water mold and the material mold), since the diaphragm layer covering the water mold frame is partially clamped and fixed, the filter press chamber is always in a sealed state, and solid particle impurities cannot enter between the diaphragm layer and the water mold frame, thereby solving the related technical problems.

[0013] In addition, when the water mold is in the non-molding state, the filter press chamber is still in a closed state. Therefore, after the filtration is completed, it is not necessary to completely drain the filtration water in the filter press chamber. It is only necessary to relieve the pressure in the pipe for injecting filtration water and then open the water mold and the material mold to remove the material cake. In the prior art, it usually takes about 10 minutes to completely drain the filtration water from the filter press chamber. It is worth noting that when the next round of filtration is carried out, when the mud material is injected into the material mold under high pressure, the filter press chamber is squeezed by the gradually expanding material chamber, and part of the filtration water flows back to compress the volume of the filter press chamber. After the slurry material is injected, part of the filtration water can be input again. Compared with the prior art, the time for injecting filtration water from the cavity to the full cavity of the filter press chamber is shortened. Combining the two, the total time for each filtration is greatly reduced, and the filtration efficiency is greatly improved.

[0014] As for the material mold, in the prior art, the slurry filters water at the drainage position and discharges it from the material mold. The circulation of water in the slurry is in a solid-liquid mixed environment, and the water filtration efficiency and circulation efficiency are both low. However, when the material mold of the present invention is closed and filtration is implemented, the material holding chamber is squeezed by the water mold, and the water in the slurry is filtered and separated by the entire surface of the water-permeable layer of the material mold. Therefore, the water filtration efficiency is greatly improved, and the water of the slurry that is filtered flows into the water-permeable layer of the material mold, realizing solid-liquid separation. The water circulates in the water-permeable layer of the material mold and is discharged from the material mold through the drainage main channel. Compared with the solid-liquid mixed circulation environment, the water circulation efficiency is also greatly improved, and the technical effect of accelerated circulation can also further improve the water filtration efficiency.

[0015] In addition, since the solid-liquid separation occurs during the slurry filtration process, on the one hand, it can prevent the solid components in the slurry from clogging the drainage and affecting the filtration efficiency, and on the other hand, it can also reduce the loss of solid components, that is, the loss of the final filter cake.

[0016] As a further improvement of the present invention, the two end faces of the water mold partition are provided with water mold permeable layers, which are fixed to the outer end face of the clamping part facing away from the water mold frame part. The water mold permeable layer has a certain maintainable thickness and can flow water.

[0017] As a further improvement of the present invention, the water-mold water-permeable layer includes multiple layers of screens fixed side by side, so it has a certain thickness. The material of the screen is usually divided into metal wire or fiber wire. Considering the high pressure during mold closing, it needs to have a certain high pressure resistance strength. Metal wire is preferred. In the mold closing state, the water-mold water-permeable layer can still maintain its thickness unchanged and allow water to flow. The water-mold water-permeable layer is mainly a synergistic effect of the compound material membrane. After the water mold and the material mold are pressed against each other in the mold closing state, the slurry material, whether it is squeezed by the material chamber itself and filtered, or squeezed by the filter press chamber and filtered, a part of it can be discharged from the water-mold water-permeable layer, that is, a new drainage channel is added in addition to the original drainage hole of the material mold, so the filtration efficiency of the slurry material can be improved.

[0018] It is particularly important to note that in the prior art, the installation of the water mold water permeable layer is not feasible. Because if there is no pressing part, the water mold water permeable layer contacts the diaphragm layer, and when the mold is closed, the material mold, the water mold water permeable layer, the diaphragm layer, and the water mold frame are pressed tightly. The screen mesh of the water mold water permeable layer is made of metal wires, and its surface is not a smooth surface but a grid-like rough surface. Therefore, under the action of high pressure, it is bound to cause damage to the diaphragm layer. Moreover, the screen mesh of the water mold water permeable layer is not a flat surface, but an irregular curved surface. Even if the pressed part of the water mold water permeable layer will be flattened when the mold is closed, its extrusion force on the diaphragm layer still varies within a range, which will also aggravate the damage to the diaphragm layer.

[0019] In addition, during the filter pressing process, the mud material gradually filters out water from the water-material mixture and finally becomes a solid filter cake. There are many solid components in the mud material. If the surface of the gradually drained "mud material" exposes relatively sharp solid substances (such as blocky and granular rocks), it may easily puncture the diaphragm layer. In addition, in the prior art, the tolerance strength of the diaphragm layer and the factors of protecting the diaphragm layer are comprehensively considered. Due to this problem, the filter press chamber cannot implement ultra-high pressure injection of filter water. The water-mold permeable layer set between the diaphragm layer and the filter cloth in the present invention can solve this problem. The water-mold permeable layer can also protect the diaphragm layer to prevent the local sharp surface of the "mud material" from directly acting on the diaphragm layer.

[0020] As a further improvement of the present invention, at least a portion of the water-mold permeable layer exposes the end surface of the water-mold partition, and the exposed portion has better guidance for water flow, thereby accelerating the drainage speed.

[0021] As a further improvement of the present invention, the clamping portion is a closed structure, and its outer end surface facing away from the water mold baffle gradually bulges from the inner circumference to the middle circumference. The water mold frame portion of most water mold baffles is in a square shape, and the corresponding clamping portion also has a square frame structure. The structural shape of the outer end surface of the clamping portion can guide the middle area of ​​the water mold permeable layer squeezed by the material chamber to be recessed toward the water mold baffle, thereby maximizing the holding volume of the material chamber, that is, the total amount of mud material injected can be increased.

[0022] As a further improvement of the present invention, the inner end face of the clamping part, the part from the inner circumference to the middle circumference, has a gap with the surface of the water mold frame part. Since the outer end face of the clamping part gradually bulges from the inner circumference to the middle circumference, the thickness of the clamping part gradually increases from the inner circumference to the middle circumference. Therefore, if the inner end face of the clamping part completely contacts and compresses the diaphragm layer, the pressure of the part of the inner end face of the clamping part from the inner circumference to the middle circumference is smaller than that of other parts, and the pressure of this part also changes gradually with the thickness. Therefore, a gap is set between this part and the water mold frame part to reduce the total area of ​​the clamping part contacting the diaphragm layer, and increase the pressure under the condition that the total mold closing pressure remains unchanged to obtain a more stable fixing effect of the diaphragm layer.

[0023] As a further improvement of the present invention, the gap gradually decreases from the inner circumference to the middle circumference of the inner end face of the pressing part, that is, when the filter press chamber is filled with filter water, the diaphragm layer located at the gap is pressed against the inner end face of the pressing part under the pressure of the filter water, and this part of the diaphragm layer is inclined. Therefore, the folding angle of the diaphragm layer at the inner circumference of the pressing part is obtuse, and the folding angle is slightly larger than that when there is no gap or the gap size remains unchanged, which can reduce the "cutting" force similar to that exerted on the diaphragm layer at this location.

[0024] As a further improvement of the present invention, the clamping part and the water mold frame part are fixedly connected by a plurality of fasteners. Although the present invention reduces the loss of the diaphragm layer and extends its service life through the above technical solutions, the diaphragm layer is still a consumable part. Therefore, the clamping part and the water mold frame part are fixedly connected by fasteners to facilitate disassembly to replace or maintain the diaphragm layer.

[0025] As a further improvement of the present invention, the surface of the water mold frame portion and the inner end surface of the clamping portion facing the water mold frame portion are provided with at least one pair of snap-fitting convex structures / concave structures and concave structures / convex structures, which not only increases the area of ​​the clamped portion of the diaphragm layer, but also enhances the effect of clamping and fixing the diaphragm layer.

[0026] As a further improvement of the present invention, at least one water inlet main channel is provided in the water mold partition, and the water mold connecting part between the water mold frame part and the water mold water containing part has at least one water inlet branch channel connected to the water inlet main channel at its lower part, that is, the filter press water is injected into the filter press chamber from the lower part of the end face of the water mold partition, and when the pipeline for injecting filter press water is depressurized and the slurry is injected into the material mold, the filter press chamber is squeezed, which is beneficial for part of the filter press water to flow back through the water inlet branch channel and the water inlet main channel.

[0027] As a further improvement of the present invention, at least one water inlet main channel is provided in the water mold partition, and at least one water inlet branch channel is connected to the water mold water holding part and the water inlet main channel, that is, the filter press water is injected into the filter press chamber from the middle of the end surface of the water mold partition, so the upper and lower parts of the filter press chamber are more symmetrical when it expands outward, that is, the extrusion of the slurry material in the material holding chamber is more uniform.

[0028] As a further improvement of the present invention, the material mold water-permeable layer includes multiple layers of screens fixed side by side, so the material mold water-permeable layer has a certain thickness. The material of the screen is usually divided into metal wire or fiber wire. Considering the high pressure during filter pressing, it is necessary to have a certain high pressure resistance strength. Metal wire material is preferred. In the mold closing state, the material mold water-permeable layer can still maintain its thickness unchanged and allow water to flow.

[0029] As a further improvement of the present invention, the apertures of the screens are the same. This mold water-permeable layer is mainly used in slurry materials with a smaller solid component particle size gradient, and can basically block the solid components of the slurry outside the mold water-permeable layer.

[0030] As a further improvement of the present invention, the aperture of the screen gradually decreases from far away from the water-containing part of the material mold to close to the water-containing part of the material mold. This material mold permeable layer is mainly used in mud materials with a large solid component particle size gradient, and the mud materials are filtered in layers to avoid filter blockage.

[0031] As a further improvement of the present invention, a slot is provided at the connection between the material mold connecting part and the material mold containing part, and the periphery of the material mold water-permeable layer is embedded in the slot. The material mold connecting part is limited and fixed at the periphery through the slot. This fixing method not only ensures that the installation and fixation of the material mold water-permeable layer is stable and reliable, but also makes the installation operation relatively simple.

[0032] As a further improvement of the present invention, the main drainage channel is located in the lower part of the material mold partition and is connected to the card slot. The card slot is not only used for installation and fixation around the material mold permeable layer, but also for connecting the main drainage channel, so the drainage effect is better.

[0033] As a further improvement of the present invention, the mold receiving portion is equipped with a plurality of fixings, and the fixings and the mold receiving portion clamp and fix the mold water-permeable layer. Compared with the card slot, this fixing method is slightly more complicated to install, but has the advantage of being more firmly installed and fixed. In addition, it can also avoid the occurrence of wrinkles and other unevenness in the middle of the mold water-permeable layer, so as to ensure better drainage performance of the mold. In addition, the fixings are preferably detachable structures to facilitate installation and disassembly operations.

[0034] As a further improvement of the present invention, the water-permeable layer of the material mold tightly covers the entire end face. This clamping and fixing method also has a technical hidden danger. The periphery of the water-permeable layer of the material mold is prone to curling and the like, thereby not being tightly attached to the end face. In this way, the slurry material will penetrate between the water-permeable layer and the end face, thereby affecting the filtration. Therefore, the water-permeable layer of the material mold is set to tightly cover the entire end face, and the above-mentioned technical problem is solved by clamping the material mold and the water mold when closing the mold.

[0035] As a further improvement of the present invention, the mold water-permeable layers at the two end surfaces are connected to the top surface of the mold partition, which can simplify the installation of the mold water-permeable layer, hang it on the mold partition for initial positioning, and then use fixing parts to install and fix it.

[0036] As a further improvement of the present invention, the main drainage channel is located in the lower part of the material mold partition, and the main drainage channel is connected to the lower part of the two end surfaces via drainage branch channels.

[0037] As a further improvement of the present invention, at least one main feed channel is provided in the upper part of the material mold partition, and the main feed channel is connected to the upper part of the two end surfaces with at least one feed branch channel respectively. The feed branch channel is provided with a shielding member at the discharge port of the end surface, and the shielding member can be flipped with its top as the rotating axis and can cover the discharge port.

[0038] Compared with the prior art, the middle feeding method is different. The present invention sets the feeding position at the upper part of the front and rear end surfaces of the material mold partition, which can avoid the mud material flooding the discharge port and flowing back to the feed branch. In this way, the pressure requirement of the conveying pipeline for conveying the mud material does not need to be too harsh. In addition, if there is a fluctuation in the mud material injected into the conveying pipeline, it is not easy to cause adverse effects.

[0039] When the slurry is injected into the material chamber and the filter is pressed, the volume of the material chamber is squeezed and continuously reduced, and the filter cloth layer is squeezed and gradually sticks to the end face of the material mold partition plate, and the part of the filter cloth layer corresponding to the discharge port is squeezed and will fall into the feed branch channel from the discharge port, so the filter cloth layer is easily damaged or even ruptured. Therefore, the present invention can solve this problem by arranging a flippable shielding member at the feed port position. When the slurry is injected into the material chamber from the feed port, the slurry will flush the shielding member open without affecting the feed. When the filter is pressed, the shielding member will be squeezed and gradually flipped toward the feed port, and the feed port will be completely covered and blocked, so that the filter cloth layer can be prevented from being blocked in the feed branch channel, thereby protecting the filter cloth layer.

[0040] As a further improvement of the present invention, a fixed seat is provided on the end face of the material mold partition at the discharge port, the fixed seat is flat and has a through hole corresponding to the discharge port, the upper part of the fixed seat is hinged to the top of the shielding member, the main function of the fixed seat is to provide a specific hinged installation position for the shielding member, and the fixed seat can also enhance the structural strength at the discharge port.

[0041] As a further improvement of the present invention, a coaxial tube body is provided along the end face of the discharge port, and the through hole of the fixing seat is sleeved on the tube body, which provides an additional fixed connection method for the fixing seat, thereby making the installation of the fixing seat and the shielding member more secure.

[0042] As a further improvement of the present invention, the tube body and the through hole of the fixing seat are threadedly matched, which can facilitate the fixed installation of the fixing seat on the one hand, and on the other hand, the degree to which the fixing seat is close to the end face can be adjusted by rotating the fixing seat.

[0043] As a further improvement of the present invention, the upper part of the fixing seat and the top of the shielding member are respectively provided with at least one pair of hingedly matched first hinged parts and second hinged parts. Theoretically, only one pair is needed to realize the flipping of the shielding member, but in actual applications, two to three pairs are usually required to enhance the structural strength of the shielding member at the hinged position. This is because during the filtration process, the mud material will repeatedly squeeze and impact the shielding member, which can easily cause collision damage to the shielding member itself and the hinged position of the shielding member.

[0044] As a further improvement of the present invention, an articulated seat is arranged on the upper portion of the fixing seat, and the first articulated portion is arranged on the articulated seat.

[0045] As a further improvement of the present invention, the feed main channel is provided with a tubular feed connector at the feed port on the top surface and / or the side surface of the material mold partition, a part of the feed connector is inserted in the feed main channel, and the other part of the feed connector located outside the feed main channel has a radially extending flange, and the flange contacts the top surface and / or the side surface of the material mold partition. The function of the feed connector is to serve as an intermediate component to connect the material mold partition with the conveying pipeline for conveying mud material, and the flange arranged on the feed connector can play a positioning role when installing the feed connector.

[0046] As a further improvement of the present invention, the feed connector is threadedly connected to the feed main channel, which facilitates the installation of the feed connector.

[0047] As a further improvement of the present invention, the discharge port is located at the connecting portion of the material mold, that is, the feed branch channel is inclined downward, so that the slurry material can be injected into the material holding chamber from the feed branch channel more smoothly.

[0048] Beneficial effects of the present invention:

[0049] (1) The present invention provides a pressing part and clamps and fixes the diaphragm layer between the end surface of the water mold partition and the pressing part. The filter press chamber is a sealed space regardless of whether it is in the mold clamping state or the mold non-closing state, thereby preventing solid particle impurities from entering between the diaphragm layer and the water mold partition and causing damage to the diaphragm layer;

[0050] (2) In the present invention, since the filter press chamber is always in a sealed state, after the filtration is completed, it is only necessary to release the pressure without draining the filtration water, so the drainage time is shortened, and the water injection time of the filter press chamber after the slurry is injected is also shortened. The combination of the two can greatly shorten the time consumption of a single filtration and improve the filtration efficiency;

[0051] (3) The present invention provides an additional drainage channel for the material film during filtration by arranging a water-mold permeable layer outside the diaphragm layer and the pressing part, thereby improving the filtration efficiency and filtration effect. In addition, the water-mold permeable layer is fixedly installed on the pressing part and will not cause damage to the diaphragm layer.

[0052] (4) The water-mold permeable layer of the present invention can also protect the diaphragm layer to prevent it from being punctured by the gradually solidified slurry. Based on this protection mechanism, the high-pressure injection of filter water in the filter press chamber can be realized, thereby increasing the squeezing force of the filter press chamber on the material chamber, that is, the filter press efficiency and filter press effect can be improved.

[0053] (5) The shape of the outer end surface of the clamping part of the present invention is set to guide the water-permeable layer of the water mold to be concave inward, thereby maximizing the amount of slurry injected into the material film. A gap is set between the inner end surface and the water mold frame portion, which can balance the pressure of the clamping part on the diaphragm layer and the water mold frame portion, thereby enhancing the stability of the diaphragm layer being clamped and fixed;

[0054] (6) The present invention provides a water-permeable layer in the material mold receiving portion and separately provides a flow channel for filtered water. On the one hand, the filtering area is expanded, thereby improving the water filtering efficiency of the slurry. On the other hand, the speed of water discharge is accelerated. The combination of the two improves the filter press efficiency of the slurry.

[0055] (7) The material mold water-permeable layer of the present invention is provided in two types, one is applied to the mud material with a smaller solid component particle size gradient, and the other is applied to the mud material with a larger solid component particle size gradient. The appropriate type can be selected according to the actual situation of the mud material to improve the use effect;

[0056] (8) The material mold water-permeable layer of the present invention is provided with two fixed installation methods, both of which have the technical effect of firm installation and good reliability in use;

[0057] (9) The present invention sets the feed position at the upper part of the end surface of the mold partition plate, which can prevent the slurry from flooding the discharge port and flowing back to the feed branch channel, thereby improving the efficiency of slurry injection;

[0058] (10) The present invention provides a reversible shielding member at the discharge port, which can prevent the discharge port from being covered and closed during the filter pressing process, and prevent the filter cloth layer from being plugged into the discharge port, thereby protecting the filter cloth layer;

[0059] (11) The present invention provides a tube body and a fixing seat at the discharge port, which not only provides a more hinged installation for the shielding member, but also enhances the overall structural strength of the discharge port. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of the present invention, wherein:

[0061] Figure 1 Schematic diagram of the explosion of the water model in implementation case 1;

[0062] Figure 2 This is a schematic diagram of the structure of the water-molded partition of implementation case 1;

[0063] Figure 3 This is a schematic diagram of the division of the diaphragm layer of implementation case 1;

[0064] Figure 4 It is a partial cross-sectional schematic diagram of the water model of implementation case 1;

[0065] Figure 5 After injecting filtered water into the water mold Figure 4 A partial enlarged schematic diagram of part B;

[0066] Figure 6 It is a partial cross-sectional schematic diagram of the water-mold permeable layer of implementation case 1;

[0067] Figure 7 This is a cross-sectional diagram of the main inlet channel and branch inlet channel of implementation case 1;

[0068] Figure 8 for Figure 2 A partial enlarged schematic diagram of part A;

[0069] Fig. 9 This is a cross-sectional diagram of the main inlet channel and branch inlet channel of implementation case 2;

[0070] Fig.10 This is a schematic diagram of the structure of the material mold of implementation case 3;

[0071] Fig.11 for Fig.10 Schematic diagram after removing the filter cloth layer;

[0072] Fig.12 It is a cross-sectional schematic diagram of the upper part of the material mold of implementation case 3;

[0073] Fig.13 It is a cross-sectional schematic diagram of the lower part of the material mold of implementation case 3;

[0074] Fig.14 It is a partial cross-sectional schematic diagram of the water-permeable layer of the material mold of implementation case 3;

[0075] Fig.15 This is a schematic diagram of the material mold after the filter cloth layer is removed from the implementation case 4;

[0076] Fig.16 A partial cross-sectional schematic diagram of the material mold of Example 4;

[0077] Fig.17 This is a schematic diagram of the structure of the material mold of implementation case 5;

[0078] Fig.18 for Fig.17 Schematic diagram after removing the filter cloth layer;

[0079] Fig.19 This is a schematic diagram of the structure of the feed connector of Example 5;

[0080] Fig. 20 It is a cross-sectional schematic diagram of the material mold of implementation case 5;

[0081] Fig.21 This is a schematic diagram of the structure of the shielding plate and the fixing seat of the implementation case 5;

[0082] Fig. 22 This is a schematic diagram of the structure of the fixing seat and the tube body of implementation case 5;

[0083] Fig.23 It is a cross-sectional schematic diagram of the filter press assembly structure of implementation case 6;

[0084] Fig.24 It is a cross-sectional schematic diagram of the filter press assembly mechanism of implementation case 7. DETAILED DESCRIPTION

[0085] The present invention is further described in detail below based on the accompanying drawings and implementation examples.

[0086] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0087] Implementation Case 1:

[0088] Reference Figure 1 , Figure 2 A water mold, the water mold is mirror-symmetrical front and back, and includes a water mold partition 11, two diaphragm layers 12, two pressing parts 13 and two water mold permeable layers 14 from the middle to the two sides, the water mold partition 11 is generally a square plate, and its front and rear end faces 110 have a sunken water mold water-containing part 1101, the water mold water-containing part 1101 is square and has arc transitions at four corners, the end face 110 is located outside the water mold water-containing part 1101 as a water mold frame part 1102, the water mold frame is not a square frame, and its four inner corners are correspondingly transitioned by arcs, the width of the upper and lower horizontal sides and the left and right horizontal sides of the water mold frame part 1102 are approximately the same, the water mold water-containing part 1101 and the water mold frame part 1102 are connected by a water mold connecting part 1103, and the water mold connecting part 1103 is a square frame and gradually bulges outward from the inner periphery to the outer periphery.

[0089] Reference Figure 3 , Figure 4 , Figure 5The diaphragm layer 12 is flatly laid and covers the end face 110 of the water mold diaphragm 11, and its length and width are both greater than the length and width of the end face 110. Therefore, after the diaphragm layer 12 is installed and fixed on the end face 110, its four sides have surplus edges outside the end face 110, and the surplus edges are recorded as the first part 121. The first part 121 can be fixed on the corresponding side of the water mold diaphragm 11, or it can be not fixed and does not affect the fixation of the diaphragm layer 12. The portion of the water mold water-containing portion 1101 corresponding to the center position of the diaphragm layer 12 is recorded as the second portion 122, and the second portion 122 is separated from the water mold water-containing portion 1101 by a certain distance. The portion between the second portion 122 and the first portion 121 of the diaphragm layer 12 is recorded as the third portion 123, and the third portion 123 is flatly attached to the surface of the water mold frame portion 1102 and is in a square shape. The clamping portion 13 is in a square frame structure, and the clamping portion 13 and the water mold frame portion 1102 clamp and fix the third portion 123 of the diaphragm layer 12 and use a plurality of detachable fasteners to fix the three. The fasteners can be selected from fastening screws or fastening screws. Since the fasteners need to pass through the third portion 123, a hole is correspondingly opened in the third portion 123, and a thickening ring can be provided on the circumference of the hole to enhance its strength to avoid deformation of the hole.

[0090] The end face 110 of the clamping portion 13 facing away from the water mold baffle 11 is recorded as the outer end face 131, and the end face 110 facing the water mold baffle 11 is recorded as the inner end face 132. The inner end face 132 of the clamping portion 13 has a gap from the inner periphery to the middle periphery with the surface of the water mold frame portion 1102, and the gap gradually decreases from the inner periphery to the middle periphery of the inner end face 132 of the clamping portion 13, dividing the inner end face 132 into two parts. The part from the outer periphery to the middle periphery corresponding to the clamping diaphragm layer 12 is recorded as the clamping part 132A, and the part from the inner periphery to the middle periphery corresponding to the gap is recorded as the non-compression part 132B. Due to the gap, the third part 123 of the diaphragm layer 12 is divided into a clamping part 123A and a non-clamping part 123B. The clamping part 123A is clamped and fixed to the pressing part 132A by the water mold frame part 1102 and the pressing part 132A, and the non-clamping part 123B is located in the gap. In the actual installation and fixing process of the diaphragm layer 12, the clamping part 123A is thermally bonded to the water mold frame part 1102 by adhesive, and then the pressing part 13 is fixedly installed. In summary, the water mold water-containing part 1101, the water mold connecting part 1103, part of the water mold frame part 1102, the non-clamping part 123B of the third part 123, and the second part 122 constitute a closed space, namely the filter press chamber 11-r. Filter press water is injected into the filter press chamber 11-r, and the diaphragm layer 12 is squeezed by the filter press water, causing the filter press chamber 11-r to gradually expand. The non-clamping portion 123B is separated from the surface of the water mold frame portion 1102 and is tightly attached to the non-clamping portion 132B of the inner end face 132 of the clamping portion 13, and is inclined, while the second portion 122 continues to expand outward without restraint. Therefore, the non-clamping portion 123B and the second portion 122 form an angle R at the inner periphery of the clamping portion 13, and the angle R is an obtuse angle. Compared with the absence of a gap between the clamping portion 13 and the water mold frame portion 1102 or the absence of a change in the size of the gap, the angle R is slightly smaller.

[0091] In addition, the surface of the water mold frame portion 1102 and the pressing portion 132A of the inner end surface 132 of the pressing portion 13 are provided with a pair of protruding structures 11a and concave structures 13b that are engaged with each other to increase the actual area of ​​the clamping portion 123A of the diaphragm layer 12. Of course, the protruding structure 11a and the concave structure 13b are not limited to a pair and are reasonably set according to actual needs. Obviously, the positions of the protruding structure and the concave structure can be interchanged, but considering that the thickness of the water mold diaphragm 11 at this position affects its structural strength, the setting scheme provided in this embodiment is preferred.

[0092] Reference Figure 6The water-mold permeable layer 14 includes multiple layers of screens 141 and a frame body 142. The screens 141 are fixedly installed side by side on the frame body 142. The screens 141 are made of metal wires. Usually, three to five layers of the screens 141 are provided. The water-mold permeable layer 14 is a square structure as a whole and its length and width are slightly wider than the end face 110 of the water-mold partition 11. The water-mold permeable layer 14 is fixed to the outer end face 131 of the pressing part 13. The specific fixing and installation method is preferably fixed and installed using fasteners (such as fastening screws, fastening screws, etc.), and after the fixing and installation is completed, the four sides of the water-mold permeable layer 14 are partially exposed from the end face 110 of the water-mold partition 11. The function of the water mold permeable layer 14 is to circulate water. When the water mold is in a mold-closing state, the water mold permeable layer 14 is clamped by the pressing part 13 and the material mold, and maintains a certain thickness to form a circulation channel. The slurry in the material mold chamber is squeezed and filtered, and part of its water is discharged from the material mold, and the other part flows into the water mold permeable layer 14 and is discharged from the part of the water mold permeable layer 14 exposed outside the end face 110.

[0093] Reference Figure 7 , Figure 8 A main water inlet channel 111a is provided in the water model partition 11, and a plurality of branch water inlets 112a are connected to the main water inlet channel 111a at the lower part of the water model connection part 1103. The plurality of branch water inlets 112a are arranged in parallel, and the branch water inlets 112a are roughly perpendicular to the water model connection part 1103.

[0094] Implementation Case 2:

[0095] A water model, except that the structure related to the injection of filter press water is different from that of the implementation case 1, the rest is the same as the implementation case 1. Fig. 9 In this embodiment, a main water inlet channel 111b is provided in the water mold partition, and the water mold water holding part 1101 is connected to the main water inlet channel 111b with multiple water inlet branches 112b. Specifically, the relevant structure in the prior art CN104225985A can be adopted.

[0096] Implementation Case 3

[0097] Reference Figure 10-Figure 14A material mold comprises a material mold partition plate 21, and its front and rear end faces 210 are covered with filter cloth layers 22, and the filter cloth layers 22 and the end faces 210 form a material holding chamber 2-r. In this embodiment, the two filter cloth layers 22 corresponding to the two end faces 210 are integrated, and the whole is in an inverted U shape and is sleeved on the material mold partition plate 21. The filter cloth layer 22 slightly protrudes from the two side edges and the bottom edge corresponding to the end face 210. When the material mold is in a closed mold state, the material mold partition plate 21 and the water mold clamp and fix the filter cloth layer 22 so that the material holding chamber 2-r is a sealed space.

[0098] The middle part of the end face 210 of the material mold partition 21 has a recessed material mold receiving portion 2101, and the material mold receiving portion 2101 is roughly square. The outer edge of the end face 210 has a material mold frame portion 2102, and the material mold frame portion 2102 is roughly square. A material mold connecting portion 2103 is connected between the material mold receiving portion 2101 and the material mold frame portion 2102, and the material mold connecting portion 2103 is also roughly square, and the material mold connecting portion 2103 is inclined, so the end face 210 can expand the area of ​​the material receiving chamber 2-r by dividing the area.

[0099] The material mold receiving portion 2101 is provided with a tightly attached material mold water-permeable layer 23, and a slot 2104 is provided at the connection between the material mold connecting portion 2103 and the material mold receiving portion 2101. The provision of the slot 2104 is equivalent to increasing the actual area of ​​the material mold connecting portion 2103. The periphery of the water mold water-permeable layer is embedded in the slot 2104. The width of the slot 2104 is approximately the same as the thickness of the material mold water-permeable layer 23 after being compressed by filter pressure, and the depth of the slot 2104 is the same as the width of the embedded part of the material mold water-permeable layer 23, that is, the space of the slot 2104 is completely occupied by the material mold water-permeable layer 23.

[0100] The mold water-permeable layer 23 includes multiple layers of screens 231 and a frame body 232. The screens 231 are fixedly installed side by side on the frame body 232. The screens 231 are made of metal wires. Usually, three to five layers of the screens 231 are provided. There are two types of mold water-permeable layers 23. One type has the same aperture of the screens 231. This mold water-permeable layer 23 is mainly used in mud materials with a small solid component particle size gradient. The aperture of the other type of screen 231 gradually decreases from far away from the water-containing part of the mold to close to the water-containing part of the mold. This mold water-permeable layer 23 is mainly used in mud materials with a large solid component particle size gradient.

[0101] There are multiple main drainage channels 215a, all of which are vertically arranged. The main drainage channels 215a are arranged in the lower part of the mold partition 21, and the bottom end of the main drainage channel 215a is opened at the bottom surface of the mold partition 21. The upper part of the main drainage channel 215a is connected to the slot 2104, so the mold water-permeable layer 23 is also connected to the slot 2104.

[0102] Implementation Case 4:

[0103] Reference Fig.15 , Fig.16 Compared with implementation case 3, the setting of the mold water-permeable layer 23 is different. In this implementation case, the mold water-permeable layer 23 located at the front and rear end surfaces 210 is an integrated structure, spanning and closely attached to the top surface of the mold partition 21. In addition, the mold water-permeable layer 23 located at the two end surfaces 210 closely covers the end surfaces 210 and slightly exceeds the left and right sides and the bottom edge of the end surfaces 210.

[0104] The mold receiving portion 2101 is provided with a plurality of fixing members 233, which are relatively uniform. The fixing members 233 and the material receiving portion clamp and fix the mold water-permeable layer 23. In addition, considering the convenience of installation and disassembly, the fixing members 233 are set as a detachable structure. Specifically, the mold receiving portion 2101 is provided with a fixing rod 234 with a thread at the position corresponding to the fixing member 233. The fixing rod 234 is perpendicular to the mold receiving portion 2101. The fixing rod 234 can be fixed to the mold receiving portion 2101 by welding technology, or the fixing rod 234 and the mold partition plate 21 can be set as an integral structure. The fixing member 233 is configured as a hollow boss-like structure, and the area of ​​the fixing member 233 pressed on the mold water-permeable layer 23 is larger than the area of ​​the outer end surface 210 thereof. Therefore, on the one hand, the contact area between the fixing member 233 and the mold water-permeable layer 23 is maximized to obtain a better clamping and fixing effect, and on the other hand, the volume of the fixing member 233 is minimized to reduce the impact on the volume of the material storage chamber. A connecting portion 235 is provided inside the fixing member 233, which is threadedly matched with the fixing rod 234.

[0105] The main drainage channel 215b is located in the lower part of the mold partition 21, and the main drainage channel 215b is connected to the lower part of the two end surfaces 210 with a drainage branch channel 216, that is, the drainage branch pipe 216 can be connected to the mold holding part 2101 or the mold connecting part 2103 or the mold frame part 2102, preferably connected to the mold connecting part 2103.

[0106] Implementation Case 5:

[0107] Reference Figure 17-Figure 22A material mold comprises a material mold partition plate 21, and its front and rear end faces 210 are covered with filter cloth layers 22, and the filter cloth layers 22 and the end faces 210 form a material holding chamber 2-r. In this embodiment, the two filter cloth layers 22 corresponding to the two end faces 210 are integrated, and the whole is in an inverted U shape and is sleeved on the material mold partition plate 21. The filter cloth layer 22 slightly protrudes from the two side edges and the bottom edge corresponding to the end face 210. When the material mold is in a closed mold state, the material mold partition plate 21 and the water mold clamp and fix the filter cloth layer 22 so that the material holding chamber 2-r is a sealed space.

[0108] The middle part of the end face 210 of the material mold partition 21 has a recessed material mold receiving portion 2101, and the material mold receiving portion 2101 is roughly square. The outer edge of the end face 210 has a material mold frame portion 2102, and the material mold frame portion 2102 is roughly square. A material mold connecting portion 2103 is connected between the material mold receiving portion 2101 and the material mold frame portion 2102, and the material mold connecting portion 2103 is also roughly square, and the material mold connecting portion 2103 is inclined, so the end face 210 can expand the area of ​​the material receiving chamber 2-r by dividing the area.

[0109] In this embodiment, two main feed channels 211 are provided in the upper part of the mold partition 21. The main feed channels 211 have a feed port 211A on the top surface of the mold partition 21. A feed branch channel 212 is connected between the main feed channel 211 and the upper part of the mold connection part 2103. The feed branch channel 212 has a discharge port 212A on the mold connection part 2103. The feed branch channel 212 is substantially perpendicular to the mold connection part 2103, so its direction is inclined. The number of the main feed channels 211 can be increased according to the actual demand for injecting slurry. In addition, if the number of the main feed channels 211 is greater than three, the feed ports 211A of the main feed channels 211 on both sides can also be opened on the two side surfaces corresponding to the feed partition.

[0110] The feed main channel 211 is provided with a tubular feed connector 213 at the feed port 211A on the top surface of the mold partition 21. The feed connector 213 is used to connect an external feed pipe to inject the slurry into the mold. A portion of the feed connector 213 is inserted into the feed main channel 211, and the outer surface of the portion and the inner wall corresponding to the feed main channel 211 are provided with matching threads, that is, the feed connector 213 is threadedly connected to the feed main channel 211. The feed connector 213 is located at the feed main channel 211. Another part outside the channel 211 has a radially extending flange 2131, and the flange 2131 contacts the top surface of the material mold partition 21 for positioning. When installing the feed connector 213, align the feed connector 213 with the feed port 211A, rotate the feed connector 213 so that the two threads are matched, and rotate until the flange 2131 presses the top surface of the material mold partition 21. Obviously, the thread of the feed channel 211 should be set with some surplus to facilitate the adjustment of the compression degree of the flange 2131. In addition, the part of the feed connector 213 located outside the material mold partition 21 is also provided with threads, that is, the feed connector 213 is threadedly connected to the feeding pipeline for disassembly and assembly.

[0111] The mold connection part 2103 is provided with a tube body 212B along the direction of the discharge port 212A. The tube body 212B is coaxial with the discharge port 212A, and its diameter is roughly the same as that of the discharge port 212A. Of course, it is better to be slightly larger than the discharge port 212A to increase the unit flow rate of the slurry. The tube body 212B and the mold connection part 2103 are integrated, and the heat welding process can also be used to weld the tube body 212B to the discharge port 212A. A fixing seat 2141 is disposed at the discharge port 212A. The fixing seat 2141 is a flat structure, specifically a disc-shaped structure in the present embodiment, with a through hole 2141a matching the tube body 212B at the center thereof, and the inner wall of the through hole 2141a and the outer wall of the tube body 212B are provided with matching threads. In addition, the fixing seat 2141 is provided with a plurality of threaded holes, and the corresponding portion of the material mold connecting portion 2103 is also provided with matching threaded holes. During installation, first align the through hole 2141a of the fixing seat 2141 with the tube body 212B, rotate the fixing seat 2141 so that the two are threadedly matched, until the fixing seat 2141 presses the material mold connecting part 2103 and the threaded hole of the fixing seat 2141 is aligned with the threaded hole of the material mold connecting part 2103, and then use fasteners (such as fastening screws or fastening screws) to fix the fixing seat 2141 and the material mold connecting part 2103.

[0112] The upper part of the fixed seat 2141 is provided with an articulated seat 2142, corresponding to the position above the tube body 212B and the discharge port 212A, the articulated seat 2142 is hinged with a shielding member 2143, the main body of the articulated seat 2142 is generally a flat plate and is arranged horizontally, the articulated seat 2142 is fixedly connected to the fixed seat 2141 using fasteners (such as fastening screws or fastening screws), and the bottom of the articulated seat 2142 has two first articulated parts 2142a, which are The first hinged parts 2142a are arranged side by side and spaced at a certain distance. The main body of the shielding member 2143 is a flat plate structure, and the top thereof has two second hinged parts 2143a, which are also arranged side by side and spaced at a certain distance. The two first hinged parts 2142a are hinged with the corresponding two second hinged parts 2143a. The shielding member 2143 can be turned around the hinge at the top thereof, and when turned to the lowest position, the tube body 212B and the discharge port 212A can be covered and closed. As for the number of the first hinged parts 2142a and the second hinged parts 2143a, in principle, only one of each can realize the turning of the shielding member 2143. Considering that the shielding member 2143 needs to be repeatedly squeezed by the slurry when injecting the slurry and filtering, setting two or more can improve the structural strength of the hinged position.

[0113] Implementation Case 6:

[0114] A filter press assembly mechanism comprises a water mold and a material mold arranged alternately and side by side, wherein the water mold is the water mold of implementation case 1 or implementation case 2, and the material mold is the material mold of implementation case 3.

[0115] Implementation Case 7:

[0116] A filter press assembly mechanism comprises a water mold and a material mold arranged alternately and side by side, wherein the water mold is the water mold of implementation case 1 or implementation case 2, and the material mold is the material mold of implementation case 4.

[0117] Implementation Case 8:

[0118] A filter press assembly mechanism includes a water mold and a material mold alternately arranged side by side. The water mold is the water mold of implementation case 1 or implementation case 2, and the material mold is the material mold of implementation case 3. In addition, the material mold in this implementation case has the feed connector, shielding member, and a fixing seat related to the shielding member of implementation case 5.

[0119] Implementation Case 9:

[0120] A filter press assembly mechanism includes a water mold and a material mold arranged alternately and side by side. The water mold is the water mold of implementation case 1 or implementation case 2, and the material mold is the material mold of implementation case 4. In addition, the material mold in this implementation case has the feed connector, shielding member, and a fixing seat related to the shielding member of implementation case 5, and accordingly, the material mold is provided with a through hole for exposing the container in the area corresponding to the fixing seat.

[0121] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned implementation cases, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned implementation cases, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation cases of the present invention.

Claims

1. A filter press assembly, comprising a water mold and a material mold arranged alternately and side by side, characterized in that: The water mold includes a water mold partition, and its front and rear end surfaces have a water mold water-receiving part with a sunken middle part, a water mold frame part around the periphery, and a water mold connecting part connecting the two. The water mold water-receiving part and the diaphragm layer form a filter press chamber. The water mold frame part is fixed with a pressing part. The diaphragm layer covering the water mold frame part is at least partially clamped and fixed by the pressing part and the water mold frame part, and the clamped part of the diaphragm layer is in a closed belt shape with a certain width. The remaining edge of the diaphragm layer outside the end surface is the first part, the part corresponding to the water-containing part of the water mold is the second part, and the part between the second part and the first part is the third part. The third part of the diaphragm layer is divided into a clamping part and a non-clamping part. The clamping part constitutes a clamped part of the diaphragm layer in a closed band shape with a certain width; The water mold water holding part, the water mold connecting part, part of the water mold frame part, the non-clamping part of the third part, and the second part constitute the filter press chamber; The material mold includes a material mold partition, and the front and rear end surfaces thereof are both covered with filter cloth layers to form a material holding chamber. The end surface of the material mold partition has a material mold holding portion with a recessed middle portion, a material mold frame portion around the periphery, and a material mold connecting portion connecting the two. The material mold holding portion is provided with a tightly attached material mold water-permeable layer, which has a certain maintainable thickness and can flow water. The material mold water-permeable layer is connected to the main drainage channel in the material mold partition; The two end faces of the water mold partition are provided with a water mold permeable layer, which is fixed on the outer end face of the pressing part facing away from the water mold frame part. The water mold permeable layer has a certain maintainable thickness and can flow water. The water mold permeable layer includes multiple layers of screens fixed side by side.

2. The filter press assembly according to claim 1, characterized in that: The clamping part is a closed structure, and its outer end surface facing away from the water mold partition gradually bulges from the inner circumference to the middle circumference. The inner end surface of the clamping part, the part from the inner circumference to the middle circumference, has a gap with the surface of the water mold frame.

3. The filter press assembly according to claim 1, characterized in that: The surface of the water mold frame portion and the inner end surface of the pressing portion facing the water mold frame portion are provided with at least one pair of snap-fitting convex structures / concave structures and concave structures / convex structures.

4. The filter press assembly according to claim 1, characterized in that: The material mold water-permeable layer includes multiple layers of screens fixed side by side.

5. The filter press assembly according to claim 1, characterized in that: A slot is provided at the place where the material mold connecting part is connected to the material mold containing part, and the periphery of the material mold water-permeable layer is embedded in the slot.

6. The filter press assembly according to claim 1, characterized in that: The mold receiving portion is provided with a plurality of fixing parts, and the fixing parts and the mold receiving portion clamp and fix the mold water-permeable layer, and the mold water-permeable layer tightly covers the entire end surface.

7. The filter press assembly according to claim 1, characterized in that: At least one main feed channel is provided in the upper part of the material mold partition, and at least one feed branch channel is respectively connected to the upper part of the two end surfaces. A shielding member is provided at the discharge port of the end surface of the feed branch channel, and the shielding member can be flipped with its top as the rotating axis and can cover the discharge port.

8. The filter press assembly according to claim 7, characterized in that: The end surface of the material mold partition is located at the discharge port and is provided with a fixing seat, the fixing seat is flat and has a through hole corresponding to the discharge port, and the upper part of the fixing seat is hinged to the top of the shielding member.

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