Filter frame with single-sided elastic member

Abstract

This utility model discloses a filter frame with a single-sided elastic element, including a filter plate assembly, an elastic frame, and a valve assembly. The filter plate assembly has a feed hole, several filtrate holes, and several drain holes. The feed hole penetrates the filter plate assembly along its axial direction. The filtrate holes are located on the surface of the filter plate assembly, and the drain holes are located on its periphery. The filter plate assembly has several pipes inside, and the filtrate holes are connected to the drain holes through these pipes. The valve assembly is located outside the filter plate assembly, and its feed end is connected to the drain holes. The elastic frame is installed on one side of the filter plate assembly, and the elastic frame and the surface of the filter plate assembly enclose a single-sided open filter chamber. By forming a single-sided open filter chamber with the elastic frame and the filter plate assembly, and combining it with the valve assembly, efficient drainage is achieved. The use of an elastic ring structure to replace the traditional built-in spring creates a self-sealing effect when adjacent filter frames are pressed together, effectively improving sealing reliability and reducing maintenance difficulty.

Description

Technical Field

[0001] This utility model relates to the field of plate and frame filter press technology, and in particular to a filter frame with a single-sided elastic element. Background Technology

[0002] Filter presses, as important solid-liquid separation equipment, are widely used in chemical, pharmaceutical, metallurgical, ceramic, silicate, and municipal and industrial sludge dewatering industries. Their working process involves multiple filter frames arranged side-by-side to form a series of continuous filter chambers. During sludge dewatering, material enters through the feed hole at the end of the filter frame and gradually fills each filter chamber. Subsequently, pressure is applied to the filter chambers, forcing the liquid to pass through the filter cloth and discharge, while solid particles are retained within the filter chambers, gradually forming a filter cake, thus achieving solid-liquid separation.

[0003] In existing technologies, the structural design of filter frames typically relies on multiple springs placed between two filter plates to meet the space requirements for filter chamber compression during the filtration process. While this spring structure can provide necessary elastic compensation within a certain range, under long-term cyclic pressurization and depressurization conditions, the spring elements are prone to fatigue due to repeated deformation, leading to weakened elasticity, plastic deformation, or even fracture failure. Since the springs are usually built into the filter frame, maintenance and replacement are extremely inconvenient once damaged, often requiring the entire filter frame to be disassembled. This not only increases equipment downtime for maintenance but also raises labor costs and maintenance complexity. Utility Model Content

[0004] In response to the problems raised in the background art, the purpose of this utility model is to propose a filter frame with a single-sided elastic element, which has the advantages of improving sealing performance, simplifying maintenance procedures and extending service life.

[0005] To achieve this objective, the present invention adopts the following technical solution: A filter frame with a single-sided elastic element includes a filter plate assembly, an elastic frame, and a pipe valve assembly; The filter plate assembly is provided with a feed hole, a plurality of filtrate holes and a plurality of drain holes. The feed hole penetrates the filter plate assembly along the axial direction. The filtrate holes are located on the surface of the filter plate assembly. The drain holes are located on the periphery of the filter plate assembly. The filter plate assembly has a plurality of pipes inside. The plurality of filtrate holes are respectively connected to the plurality of drain holes through the plurality of pipes. The valve assembly is located outside the filter plate assembly. The feed end of the valve assembly is respectively connected to the plurality of drain holes. The elastic frame is installed on one side of the filter plate assembly, and the elastic frame and the surface of the filter plate assembly enclose a filter chamber with one side open.

[0006] Preferably, the elastic frame is an elastic ring; The elastic ring includes an inner ring wall, an outer ring wall, a top ring wall, and a bottom ring wall. The inner ring wall and the outer ring wall are disposed opposite to each other, and the top ring wall and the bottom ring wall are disposed opposite to each other. The inner ring wall and the bottom ring wall are attached to the filter plate assembly, and the top ring wall is used to attach to the adjacent filter frame.

[0007] Preferably, the top wall of the ring and the bottom wall of the ring are respectively provided with adsorption and anti-slip grooves; The adsorption and anti-slip groove located on the top wall of the ring is recessed towards the bottom wall of the ring; The adsorption and anti-slip groove located on the bottom wall of the ring is recessed towards the top wall of the ring.

[0008] Preferably, the adsorption anti-slip groove divides the top wall of the ring into an inner top wall and an outer top wall, and the distance between the inner top wall and the bottom wall of the ring is greater than the distance between the outer top wall and the bottom wall of the ring.

[0009] Preferably, the filter plate assembly includes a base plate and a core plate; The core plate is installed on one side of the base plate. The shape of the elastic frame matches the shape of the core plate. The elastic frame is fitted around the outer periphery of the core plate. The inner ring wall is in contact with the outer wall of the core plate. The bottom ring wall is in contact with the surface of the base plate. The plane where the top ring wall is located protrudes from the plane where the outermost end of the surface of the core plate is located. The elastic frame and the surface of the core plate enclose the filter chamber.

[0010] Preferably, the area of ​​the inner ring wall is smaller than the area of ​​the outer ring wall, the bottom end of the inner ring wall is connected to the inner side of the bottom ring wall through an inner side wall, and the inner side wall is inclined from the inside to the outside. The inner sidewall and the outer sidewall of the core plate form a deformation space.

[0011] Preferably, the elastic ring is further provided with a snap-fit ​​protrusion, which is located on the inner side of the inner ring wall; The outer wall of the core plate is provided with a mounting groove, which is engaged with the mounting protrusion.

[0012] Preferably, the surface of the base plate is provided with a plurality of filtrate holes, the filtrate holes penetrate the base plate along the axial direction of the base plate, the periphery of the base plate is provided with a plurality of drain holes, and the interior of the base plate is provided with a plurality of pipes; The surface of the core plate is provided with a plurality of filtrate holes, which penetrate the core plate along the axial direction of the core plate; The filtration holes of the core plate correspond one-to-one with the filtration holes of the base plate.

[0013] Preferably, the filter plate assembly further includes filter cloth and filter cloth mounting components; The filter cloth is mounted on the surface of the core plate away from the bottom plate via the filter cloth mounting component, and the filter cloth covers the filtrate holes of the core plate; The filter cloth is mounted on the surface of the base plate away from the core plate via the filter cloth mounting component, and the filter cloth covers the filtrate holes of the base plate.

[0014] Preferably, the filter press also includes two roller handles, which are symmetrically installed on both sides of the upper part of the filter plate assembly. A clearance is provided between the roller handles and the elastic frame, and the roller handles are rotatably mounted on the main beam of the filter press.

[0015] Compared with the prior art, one of the above technical solutions has the following beneficial effects: The filter chamber is formed by a single-sided open filter chamber through the elastic frame and filter plate assembly, and the pipe valve assembly is combined to achieve efficient liquid drainage. The elastic ring structure replaces the traditional built-in spring, and a self-sealing effect is formed when adjacent filter frames are pressed together, which effectively improves the sealing reliability and reduces the maintenance difficulty. It has the advantages of improving sealing performance, simplifying the maintenance process and extending service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model; Figure 2 This is a structural schematic diagram from another angle of one embodiment of the present invention; Figure 3 yes Figure 1 Front view; Figure 4 yes Figure 3 Sectional view of AA; Figure 5 yes Figure 4 An enlarged schematic diagram of an embodiment at point B; Figure 6 yes Figure 4 An enlarged schematic diagram of another embodiment at point B.

[0017] The components include: filter plate assembly 1, bottom plate 11, core plate 12, mounting groove 121, feed hole 101, filtrate hole 102, drain hole 103, elastic frame 2, adsorption anti-slip groove 201, deformation space 202, inner ring wall 21, outer ring wall 22, ring top wall 23, inner ring top wall 231, outer ring top wall 232, ring bottom wall 24, inner side wall 25, mounting protruding ring 26, pipe valve assembly 3, and roller handle 4. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," and "third" may explicitly or implicitly include one or more of that feature.

[0021] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The following is in conjunction with the appendix Figures 1 to 6 The technical solution of this utility model will be further illustrated through specific implementation methods.

[0023] A filter frame with a single-sided elastic element includes a filter plate assembly 1, an elastic frame 2, and a pipe valve assembly 3; The filter plate assembly 1 is provided with a feed hole 101, a plurality of filtrate holes 102 and a plurality of drain holes 103. The feed hole 101 penetrates the filter plate assembly 1 along the axial direction of the filter plate assembly 1. The filtrate holes 102 are provided on the surface of the filter plate assembly 1. The drain holes 103 are provided on the periphery of the filter plate assembly 1. The filter plate assembly 1 is provided with a plurality of pipes inside. The plurality of filtrate holes 102 are respectively connected to the plurality of drain holes 103 through the plurality of pipes. The valve assembly 3 is provided outside the filter plate assembly 1. The feed end of the valve assembly 3 is respectively connected to the plurality of drain holes 103. The elastic frame 2 is installed on one side of the filter plate assembly 1, and the elastic frame 2 and the surface of the filter plate assembly 1 enclose a filter chamber with one side open.

[0024] The filter plate assembly 1 refers to the main structure that bears the filtration function. Its internal pipelines can be integrally formed by mold or machined. The elastic frame 2 refers to an annular sealing component with deformation capability. On the one hand, it can deform radially to a shape larger than the filter plate assembly 1 to fit around the filter plate assembly 1. Its elastic recovery capability ensures that it is stably fitted on the filter plate assembly 1. On the other hand, its axial deformation capability can meet the compression requirements of the filter chamber during the pressure filtration process. The pipe valve assembly 3 is a device for collecting and draining aluminum liquid. Specifically, it can be connected to the drain hole 103 with a quick-connect connector for easy disassembly during maintenance. A single-sided open filter chamber refers to a filter chamber that only needs to be open on one side to cooperate with the adjacent filter frame to form a closed filter chamber. The elastic frame 2 (single-sided elastic element) set on one side surface of the filter plate assembly 1 meets both the assembly gap of the closed filter chamber and the deformation compensation requirements of the filter chamber during pressure filtration.

[0025] Specifically, the material enters the filter chamber composed of adjacent filter frames through the feed port 101. Under pressure, the liquid enters through the filtrate port 102, is guided through the pipeline to the drain port 103 on the periphery, and is finally discharged through the external pipe valve assembly 3. The elastic frame 2 undergoes compression deformation during the filtration process, and its rebound force maintains a stable sealing pressure in the filter chamber. When maintenance is required, only the elastic frame 2 needs to be disassembled for replacement, without disassembling the filter plate assembly 1. The external design of the pipe valve assembly 3 avoids interference with the filter plate structure and reduces the risk of liquid leakage.

[0026] Compared to existing technologies, traditional filter frames rely on multiple springs between the two filter plates to compress the filter chamber space. If a single or partial spring fails, the entire filter frame needs to be disassembled to maintain or replace the internal components. This invention replaces the complex spring structure with a single-sided elastic frame 2, eliminating the problem caused by fatigue fracture of the built-in springs. The replacement time of the elastic frame 2 is shortened, significantly reducing the equipment's operation and maintenance time.

[0027] Furthermore, the elastic frame 2 is an elastic ring; The elastic ring includes an inner ring wall 21, an outer ring wall 22, a top ring wall 23, and a bottom ring wall 24. The inner ring wall 21 is disposed opposite to the outer ring wall 22, and the top ring wall 23 is disposed opposite to the bottom ring wall 24. The inner ring wall 21 and the bottom ring wall 24 are attached to the filter plate assembly 1, and the top ring wall 23 is used to attach to the adjacent filter frame.

[0028] The inner ring wall 21 refers to the annular wall surrounding the outer side of the filter plate assembly 1, which forms the lateral boundary of the filter chamber. The outer ring wall 22 refers to the annular wall located outside the inner ring wall 21, with an outer diameter larger than that of the inner ring wall 21, used to enhance the overall structural strength of the elastic ring. The top ring wall 23 refers to the annular structure connecting the top of the inner ring wall 21 and the top of the outer ring wall 22, used to form contact with the surface of adjacent filter frames during the filtration process. The bottom ring wall 24 refers to the annular structure connecting the bottom of the inner ring wall 21 and the bottom of the outer ring wall 22, used to establish the installation reference for the elastic ring.

[0029] The elastic ring is connected and fixed to the filter plate assembly 1 through the inner ring wall 21 and the bottom ring wall 24. When adjacent filter frames approach each other under the action of the filter press, the top ring wall 23 of the elastic ring is subjected to axial pressure, resulting in uniform radial (towards the outside of the filter) and axial (compressing the filter chamber space) elastic deformation. Specifically, during the filtration process, the top ring wall 23 forms a continuous surface contact with the surface of the adjacent filter frames. The coordinated deformation of the inner ring wall 21 and the outer ring wall 22 causes the elastic ring to exhibit a composite deformation mode of axial compression and radial expansion, which both compensates for the assembly gap between the filter frames and maintains the geometric stability of the filter chamber space.

[0030] Furthermore, the top wall 23 and the bottom wall 24 of the ring are respectively provided with adsorption and anti-slip grooves 201; The adsorption anti-slip groove 201 located on the top wall 23 of the ring is recessed toward the bottom wall 24 of the ring; The adsorption anti-slip groove 201 located on the bottom wall 24 of the ring is recessed towards the top wall 23 of the ring.

[0031] The adsorption anti-slip groove 201 refers to the recessed structure formed on the contact surface of the elastic ring. Specifically, it can be formed into grooves on the surface of the elastic material by machining or molding. This adsorption anti-slip groove 201 structure increases the frictional resistance of the contact interface by changing the geometry of the contact surface. Specifically, the adsorption anti-slip groove 201 of the top wall 23 points towards the bottom wall 24, and the adsorption anti-slip groove 201 of the bottom wall 24 points towards the top wall 23. After grooves are made in these two walls of the elastic ring, the pressure on these two walls will increase due to the reduction in area, while the pressure remains unchanged. Then, the material of the contact edges of the top wall 23 and the bottom wall 24 with the corresponding structure will undergo reversible elastic deformation. The deformation direction is perpendicular to the plane (filling the groove gap) and radial along the plane (fitting the edge), and the pressure transmission can be maintained after deformation. This synergistic effect of "deformation following pressure" will make the actual contact area of ​​the interface (including the area covered by the material after deformation) even greater than the "nominal contact area" before groove making, thereby improving the tightness.

[0032] Specifically, when the filter press is running, the top wall 23 of the elastic ring contacts the adjacent filter frame, and the recessed structure of the adsorption anti-slip groove 201 forms a closed cavity on the contact surface. As the filter pressure increases, the air in the cavity is squeezed out, generating a negative pressure adsorption effect, which makes the contact surface fit tightly together. At the same time, the adsorption anti-slip groove 201 of the bottom wall 24 of the ring forms the same effect on the surface of the filter plate assembly 1, making the bottom wall 24 of the ring fit tightly with the contact surface of the filter plate assembly 1, preventing the elastic ring from sliding along the surface of the filter plate assembly 1.

[0033] Furthermore, the adsorption anti-slip groove 201 divides the top ring wall 23 into an inner top ring wall 231 and an outer top ring wall 232, and the distance between the inner top ring wall 231 and the bottom ring wall 24 is greater than the distance between the outer top ring wall 232 and the bottom ring wall 24.

[0034] The inner ring top wall 231 refers to the portion of the ring top wall near the center of the elastic ring, while the outer ring top wall 232 refers to the portion of the ring top wall near the edge of the elastic ring. When pressure is applied to the filter press, the inner ring top wall 231, being farther from the ring bottom wall 24 than the outer ring top wall 232, preferentially contacts the adjacent filter frame, deforms, and establishes an initial seal. Furthermore, due to the presence of the adsorption anti-slip groove 201 on the ring top wall 23, the inner ring top wall 231 preferentially deforms towards the space of the adsorption anti-slip groove 201 during deformation. As the filter press pressure continues to increase, the outer ring top wall 232, with its shorter lever arm structure, begins to provide support, limiting the lateral (radial) displacement of the elastic ring as a whole. The stepped contact surface formed by the inner ring top wall 231 and the outer ring top wall 232 results in a gradual distribution of sealing pressure from the inside out, preventing plastic deformation caused by excessive compression in localized areas and maintaining the overall structural stability.

[0035] Furthermore, the filter plate assembly 1 includes a base plate 11 and a core plate 12; The core plate 12 is installed on one side of the base plate 11. The shape of the elastic frame 2 matches the shape of the core plate 12. The elastic frame 2 is sleeved on the outer periphery of the core plate 12. The inner ring wall 21 fits against the outer wall of the core plate 12. The bottom ring wall 24 fits against the surface of the base plate 11. The plane where the top ring wall 23 is located protrudes from the plane where the outermost end of the surface of the core plate 12 is located. The elastic frame 2 and the surface of the core plate 12 enclose the filter chamber.

[0036] The base plate 11 refers to the base structure that supports the core plate 12 and the pipeline layout. Its surface is provided with filtrate holes 102, which are connected to the drain holes 103 through internal pipelines to guide the filtrate out. The core plate 12 refers to the component installed on the base plate 11 and directly supporting the filter chamber. Its surface is also provided with filtrate holes 102, which are correspondingly connected to the filtrate holes 102 of the base plate 11, for material filtration. The elastic frame 2 is fitted around the outer periphery of the core plate 12, meaning that the inner ring wall 21 of the elastic frame forms a close contact with the outer wall of the core plate 12, achieving assembly and fixation with the core plate 12 through a fitting method. The top ring wall 23 protrudes beyond the outermost plane of the core plate 12, meaning that the top of the elastic frame 2 is higher than the surface of the core plate 12 when not under pressure. This can be achieved by adjusting the thickness of the elastic frame 2 (equivalent to the width of the outer ring wall 22), so that when adjacent filter frames are pressed together, they preferentially contact the top ring wall 23 and trigger elastic deformation.

[0037] Specifically, the core plate 12 is fixed to one side surface of the base plate 11, and the two form a filtrate discharge channel through the filtrate hole 102 and internal pipelines. The elastic frame 2 is fixed at the bottom by its bottom ring wall 24 adhering to the surface of the base plate 11, and its inner ring wall 21 is in close contact with the outer wall of the core plate 12 to limit lateral (radial) displacement. When adjacent filter frames are pressed together, the top ring wall 23 first contacts the surface of the other filter frame. At this time, the elastic frame 2 undergoes axial compression deformation, and the contact surface between the inner ring wall 21 and the outer wall of the core plate 12 maintains contact pressure to prevent material leakage. The core plate 12, as a rigid support, maintains the geometric stability of the filter chamber during the filtration process, while the elastic frame 2 absorbs the deformation requirements of assembly tolerances and compression through overall deformation, replacing the traditional built-in spring structure.

[0038] Furthermore, the area of ​​the inner ring wall 21 is smaller than the area of ​​the outer ring wall 22, and the bottom end of the inner ring wall 21 is connected to the inner side of the bottom ring wall 24 through an inner side wall 25, which is inclined from the inside to the outside. The inner sidewall 25 and the outer sidewall of the core plate 12 form a deformation space 202.

[0039] The inner ring wall 21 refers to the annular sidewall of the elastic ring near the core plate 12, and the outer ring wall 22 refers to the annular sidewall of the elastic ring away from the core plate 12. The smaller area of ​​the inner ring wall 21 reduces local rigidity, while the larger area of ​​the outer ring wall 22 provides deformation support. The inner sidewall 25 is the transition structure connecting the bottom of the inner ring wall 21 to the inner side of the ring bottom wall 24. Specifically, it can be constructed with an inclined surface to guide the deformation direction of the elastic material. The deformation space 202 is the area enclosed by the inner sidewall 25 and the outer sidewall of the core plate 12, used to accommodate the deformation displacement of the elastic frame 2 under pressure.

[0040] Specifically, when the elastic frame 2 is subjected to compressive force from the adjacent filter frame, the inclined structure of the inner wall 25 transfers the deformation of the elastic ring to the deformation space 202, causing the elastic ring to extend uniformly along the inclined direction. The deformation space 202 provides a accommodating area for the compressive displacement of the elastic frame 2. During this process, the inclination angle of the inner wall 25 controls the deformation path, and the deformation space 202 absorbs local stress, thereby achieving multi-directional uniform deformation of the elastic material.

[0041] Furthermore, the elastic ring is also provided with a snap-fit ​​protrusion 26, which is located on the inner side of the inner ring wall 21; The outer side wall of the core plate 12 is provided with a mounting groove 121, which is connected to the mounting protrusion 26.

[0042] The snap-fit ​​protrusion 26 refers to an annular protrusion extending from the inner wall of the elastic ring towards the core plate 12. The snap-fit ​​groove 121 refers to an annular groove formed on the outer wall of the core plate 12, which can be formed by milling or molding to match the shape of the snap-fit ​​protrusion 26. The snap-fit ​​protrusion 26 and the snap-fit ​​groove 121 of the core plate 12 fit together to form a mechanical lock, preventing the connection from loosening when the elastic frame 2 is deformed under pressure.

[0043] When the elastic frame 2 is installed onto the core plate 12, the locking protrusion 26 is embedded in the locking groove 121 of the core plate 12, forming a mechanical locking structure with a concave-convex fit. During the filtration process, the elastic frame 2 will undergo radial deformation when subjected to axial pressure. At this time, contact stress is generated between the mating surfaces of the locking protrusion 26 and the locking groove 121, which counteracts the displacement tendency caused by deformation through mechanical engagement. This structure does not rely on the elastic deformation of traditional springs to maintain the connection, but achieves fixation through rigid locking, avoiding sealing failure caused by fatigue of elastic elements. When maintenance is required, the components can be separated by external force to release the engagement between the locking protrusion 26 and the locking groove 121, without disassembling the main filter frame structure.

[0044] Furthermore, the surface of the base plate 11 is provided with a plurality of the filtrate holes 102, the filtrate holes 102 penetrate the base plate 11 along the axial direction of the base plate 11, the periphery of the base plate 11 is provided with a plurality of the drain holes 103, and the interior of the base plate 11 is provided with a plurality of the pipes. The surface of the core plate 12 is provided with a plurality of the filtrate holes 102, and the filtrate holes 102 penetrate the core plate 12 along the axial direction of the core plate 12; The filtration holes 102 of the core plate 12 correspond one-to-one with the filtration holes 102 of the base plate 11.

[0045] The filtrate hole 102 penetrates the base plate 11 axially, meaning the hole direction is parallel to the thickness direction of the base plate 11. This can be achieved through drilling or casting, allowing the filtrate to directly enter the base plate 11 vertically. The peripheral drainage holes 103 are holes distributed along the outer periphery of the base plate 11, connected to the filtrate hole 102 via internal pipes, forming a filtrate discharge channel. The one-to-one correspondence between the filtrate holes 102 of the core plate 12 and the base plate 11 means that the filtrate holes of the core plate 12 and the base plate 11 are perfectly aligned during assembly, ensuring continuous flow of filtrate during the filtration process on both sides of the filter frame.

[0046] Furthermore, the filter plate assembly 1 also includes a filter cloth and a filter cloth mounting component; The filter cloth is mounted on the surface of the core plate 12 away from the bottom plate 11 via the filter cloth mounting component, and the filter cloth covers the filtrate holes 102 of the core plate 12; The filter cloth is mounted on the surface of the base plate 11 away from the core plate 12 via the filter cloth mounting component, and the filter cloth covers the filtrate holes 102 of the base plate 11.

[0047] Filter cloth is a filtration medium used to intercept solid particles while allowing liquids to pass through. Its pore size can be selected according to the particle size range of the filtered material. Filter cloth mounting components refer to the connection structures used to fix the filter cloth to the surface of the core plate 12 or the base plate 11. Specifically, they can be implemented using pressure strips or clips. Their function is to maintain the relative positional relationship between the filter cloth and the filter plate assembly 1 through mechanical constraints.

[0048] Installing filter cloth on the surface of the core plate 12 away from the base plate 11 and on the surface of the base plate 11 away from the core plate 12 is equivalent to covering both sides of a filter chamber with filter cloth, so that the filtrate holes 102 are completely covered by the filter cloth, thereby preventing solid particles from directly entering the filtrate holes during the pressure filtration process. The fixing function of the filter cloth mounting components can prevent the filter cloth from shifting under material impact or pressure fluctuations, ensuring the stability of the connection between the filter cloth and the base plate 11 and the core plate 12.

[0049] In some embodiments, the filter cloth mounting component is an annular pressure strip, which is connected to the surface of the core plate 12 or the base plate 11 by bolts, clamping the filter cloth between the pressure strip and the core plate 12 (base plate 11). In other embodiments, the filter cloth mounting component is a snap-fit ​​structure, with the snap-fit ​​embedded in a groove on the surface of the core plate 12 or the base plate 11.

[0050] Furthermore, it also includes two roller handles 4, which are symmetrically installed on both sides of the upper part of the filter plate assembly 1. A clearance is provided between the roller handles 4 and the elastic frame 2, and the roller handles 4 are rotatably mounted on the main beam of the filter press.

[0051] The roller handle 4 refers to an operating component with a rolling structure, which can be implemented using a combination of bearings and wheel bodies. The wheel body surface contacts the main beam to generate rolling friction. Symmetrical installation means that the two roller handles 4 are mirror-distributed with respect to the central axis of the base plate 11. Specifically, they can be fixed to the two side edges of the base plate 11 using bolts or clips, thus forming a double-point support structure. In detail, the roller handles 4, through the rolling contact between the wheel body and the main beam, convert the sliding friction during the movement of the filter frame into rolling friction, significantly reducing frictional resistance. The two roller handles 4 are symmetrically distributed on both sides of the upper part of the base plate 11, forming stable double support points, ensuring even load distribution when the filter frame moves along the main beam, and avoiding offset or jamming caused by unilateral force.

[0052] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A filter frame with a single-sided elastic element, characterized in that: Includes filter plate assembly, flexible frame and pipe valve assembly; The filter plate assembly is provided with a feed hole, a plurality of filtrate holes and a plurality of drain holes. The feed hole penetrates the filter plate assembly along the axial direction. The filtrate holes are located on the surface of the filter plate assembly. The drain holes are located on the periphery of the filter plate assembly. The filter plate assembly has a plurality of pipes inside. The plurality of filtrate holes are respectively connected to the plurality of drain holes through the plurality of pipes. The valve assembly is located outside the filter plate assembly. The feed end of the valve assembly is respectively connected to the plurality of drain holes. The elastic frame is installed on one side of the filter plate assembly, and the elastic frame and the surface of the filter plate assembly enclose a filter chamber with one side open.

2. The filter frame with a single-sided elastic element according to claim 1, characterized in that: The elastic border is an elastic ring; The elastic ring includes an inner ring wall, an outer ring wall, a top ring wall, and a bottom ring wall. The inner ring wall and the outer ring wall are disposed opposite to each other, and the top ring wall and the bottom ring wall are disposed opposite to each other. The inner ring wall and the bottom ring wall are attached to the filter plate assembly, and the top ring wall is used to attach to the adjacent filter frame.

3. A filter frame with a single-sided elastic element according to claim 2, characterized in that: The top wall and bottom wall of the ring are respectively provided with adsorption and anti-slip grooves; The adsorption and anti-slip groove located on the top wall of the ring is recessed towards the bottom wall of the ring; The adsorption and anti-slip groove located on the bottom wall of the ring is recessed towards the top wall of the ring.

4. A filter frame with a single-sided elastic element according to claim 3, characterized in that: The adsorption anti-slip groove divides the top wall of the ring into an inner top wall and an outer top wall, and the distance between the inner top wall and the bottom wall of the ring is greater than the distance between the outer top wall and the bottom wall of the ring.

5. A filter frame with a single-sided elastic element according to claim 4, characterized in that: The filter plate assembly includes a base plate and a core plate; The core plate is installed on one side of the base plate. The shape of the elastic frame matches the shape of the core plate. The elastic frame is fitted around the outer periphery of the core plate. The inner ring wall is in contact with the outer wall of the core plate. The bottom ring wall is in contact with the surface of the base plate. The plane where the top ring wall is located protrudes from the plane where the outermost end of the surface of the core plate is located. The elastic frame and the surface of the core plate enclose the filter chamber.

6. A filter frame with a single-sided elastic element according to claim 5, characterized in that: The area of ​​the inner ring wall is smaller than the area of ​​the outer ring wall. The bottom end of the inner ring wall is connected to the inner side of the bottom ring wall through an inner side wall. The inner side wall is inclined from the inside to the outside. The inner sidewall and the outer sidewall of the core plate form a deformation space.

7. A filter frame with a single-sided elastic element according to claim 5, characterized in that: The elastic ring is further provided with a snap-fit ​​protrusion, which is located on the inner side of the inner ring wall; The outer wall of the core plate is provided with a mounting groove, which is engaged with the mounting protrusion.

8. A filter frame with a unilateral elastic element according to any one of claims 6 or 7, characterized in that: The surface of the base plate is provided with a plurality of filtrate holes, which penetrate the base plate along the axial direction. The periphery of the base plate is provided with a plurality of drain holes, and the interior of the base plate is provided with a plurality of pipes. The surface of the core plate is provided with a plurality of filtrate holes, which penetrate the core plate along the axial direction of the core plate; The filtration holes of the core plate correspond one-to-one with the filtration holes of the base plate.

9. A filter frame with a single-sided elastic element according to claim 8, characterized in that: The filter plate assembly also includes filter cloth and filter cloth mounting components; The filter cloth is mounted on the surface of the core plate away from the bottom plate via the filter cloth mounting component, and the filter cloth covers the filtrate holes of the core plate; The filter cloth is mounted on the surface of the base plate away from the core plate via the filter cloth mounting component, and the filter cloth covers the filtrate holes of the base plate.

10. A filter frame with a single-sided elastic element according to claim 1, characterized in that: It also includes two roller handles, which are symmetrically installed on both sides of the upper part of the filter plate assembly. A clearance is provided between the roller handles and the elastic frame, and the roller handles are rotatably mounted on the main beam of the filter press.

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