Direct compression type elastic composite filter plate and ultrahigh pressure filter press

Abstract

The utility model discloses a direct pressure type elastic composite filter plate and an ultrahigh pressure filter press, the direct pressure type elastic composite filter plate comprises a metal partition plate, and a feeding hole is formed in the metal partition plate; the permeable filter layers symmetrically cover the two sides of the metal partition plate; the non-metal elastic frames are symmetrically arranged on the two sides of the metal partition plate and located on the side, away from the metal partition plate, of the permeable filtering layer, first fasteners are arranged on the non-metal elastic frames, and the non-metal elastic frames and the permeable filtering layer as well as the permeable filtering layer and the metal partition plate are pressed and fixed through the first fasteners; the metal frames are symmetrically arranged on the two sides of the metal partition plate and located on the outer side edges of the non-metal elastic frames, second fasteners are arranged on the metal frames, and the outer side edges of the non-metal elastic frames are pressed on the inner side edges of the metal frames through the second fasteners. The utility model solves the problems that a non-metal filter plate cannot bear ultrahigh squeezing pressure and is insufficient in productivity, and a metal filter plate and a welded filter plate are tedious in manufacturing process and overlarge in dead weight.

Description

Technical Field

[0001] This utility model relates to the field of filter press technology, and in particular to a direct-pressure type elastic composite filter plate and an ultra-high pressure filter press. Background Technology

[0002] A filter press is a device that separates solids and liquids by filtering materials under pressure. It is widely used in environmental protection, chemical, and mining industries. With the continuous development of technology, people have increasingly higher requirements for the moisture content of the filter cake after pressing. Therefore, the pressing pressure of filter presses is getting higher and higher. Ultra-high pressure filter presses are solid-liquid separation devices with pressing pressures greater than 3 MPa.

[0003] Currently, filter plates in filter presses are typically diaphragm-type filter plates, consisting of a membrane plate and a chamber plate forming a filtration unit. Diaphragm-type filter plates can be classified into non-metallic and metallic filter plates based on their materials. Non-metallic filter plates are injection molded from polymer materials. However, because polymer materials are not strong enough to withstand the pressure of ultra-high pressure pressing, the filter plates must be thickened to achieve ultra-high pressure, resulting in a reduction in chamber volume and a significant decrease in filter press capacity. Metallic filter plates are usually manufactured using casting or welding processes. They have high strength but are also heavier, have longer production cycles, higher manufacturing costs, and their excessive weight places higher demands on infrastructure. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a direct-pressure type elastic composite filter plate and an ultra-high pressure filter press to solve the problems that non-metallic filter plates cannot withstand ultra-high pressure pressing and have insufficient production capacity, as well as the problems that metal filter plates and welded filter plates have complicated manufacturing processes and excessive weight.

[0005] This utility model provides a direct-pressure type elastic composite filter plate, comprising:

[0006] A metal partition with a feed inlet;

[0007] A water-permeable filter layer is symmetrically applied to both sides of the metal partition.

[0008] A non-metallic elastic frame is symmetrically arranged on both sides of the metal partition, located on the side of the water-permeable filter layer away from the metal partition. A first fastener is provided on it, which presses and fixes the non-metallic elastic frame and the water-permeable filter layer, and the water-permeable filter layer and the metal partition.

[0009] A metal frame is symmetrically arranged on both sides of the metal partition, located at the outer edge of the non-metallic elastic frame, and a second fastener is provided on it. The second fastener presses the outer edge of the non-metallic elastic frame against the inner edge of the metal frame.

[0010] Furthermore, both the non-metallic elastic frame and the metal frame are rectangular frames. The first fastener includes a plurality of elastic expansion bolts evenly arranged along the circumference of the non-metallic elastic frame, and the second fastener includes a plurality of screws evenly arranged along the circumference of the metal frame. The non-metallic elastic frame is fixedly connected to the water-permeable filter layer and the metal partition by a plurality of elastic expansion bolts, and the metal frame is fixedly connected to the metal partition by a plurality of screws.

[0011] Furthermore, a sealing ring is provided on the side of the non-metallic elastic frame away from the water-permeable filter layer.

[0012] Furthermore, the water-permeable filter layer includes a screen and a filter cloth, the filter cloth being fixed by a filter cloth clamp and covering the side of the screen away from the metal partition.

[0013] Furthermore, it also includes non-metallic bosses, which include female bosses and male bosses symmetrically arranged on both sides of the metal partition. The male bosses and the female bosses pass through the screen and the metal partition respectively and are then tightly connected to each other.

[0014] Furthermore, an annular water groove is recessed inward on the side of the non-metallic elastic frame near the screen, and the outer edge of the screen extends into the annular water groove.

[0015] Furthermore, the bottom of the non-metallic elastic frame is uniformly provided with a plurality of first drainage holes that communicate with the annular water tank, and the bottom of the metal frame is provided with a plurality of second drainage holes that correspond one-to-one with the first drainage holes, and the first drainage holes and the second drainage holes are connected.

[0016] A drain pipe is provided below the metal frame, the top of the drain pipe has an opening that communicates with the second drain hole, and both ends of the drain pipe have drain outlets.

[0017] Furthermore, symmetrical sliding handles are provided on both sides of the metal frame. Each sliding handle includes a support block fixedly connected to the metal frame and a slider slidably connected to the support block. The slider can move along the length of the metal partition and is fixed by a third fastener.

[0018] Furthermore, the support block has a fastening hole, the slider has a waist-shaped hole, and the third fastener includes a fastening bolt, one end of which passes through the waist-shaped hole, is inserted into the fastening hole, and is threaded into the fastening hole.

[0019] This utility model provides an ultra-high pressure filter press, including a direct-pressure type elastic composite filter plate; it also includes a frame base, a hydraulic drive device, and a pressing plate and a thrust plate disposed on both sides of the direct-pressure type elastic composite filter plate on the frame base. The output end of the hydraulic drive device is connected to the pressing plate and is used to push the pressing plate, the direct-pressure type elastic composite filter plate and the thrust plate to close together, and a filter chamber unit is formed between two adjacent sets of the direct-pressure type elastic composite filter plates.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] The composite filter plate of this utility model includes a metal partition, a water-permeable filter layer, a non-metallic elastic frame, and a metal frame. The metal partition and metal frame are made of metal, while the non-metallic elastic frame is made of non-metallic elastic material. The water-permeable filter layer is provided on both sides of the metal partition. The fluid to be filtered is filtered through the water-permeable filter layer, ultimately achieving solid-liquid separation within the fluid. This application uses a composite assembly of metal and non-metal materials, which improves the strength of the filter plate and overcomes the problems of insufficient strength, excessive thickness, and insufficient production capacity of non-metallic filter plates in diaphragm filter presses. It also overcomes the problems of heavy metal filter plates, long production cycles, and complex manufacturing processes. At the same time, the composite filter plate of this application uses a single hydraulic pressure as a power source, eliminating the need for a counterweight high-pressure water pressing system, reducing damage to the membrane plate, and saving on equipment maintenance and investment costs.

[0022] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0023] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0024] Figure 1 This is a front structural diagram of the direct-pressure type elastic composite filter plate of this utility model;

[0025] Figure 2 for Figure 1 Sectional view of AA;

[0026] Figure 3 for Figure 2 Enlarged view at point B in the middle;

[0027] Figure 4 for Figure 2 Enlarged view at point C;

[0028] Figure 5This is a schematic diagram of the structure of the sliding handle of this utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the ultra-high pressure filter press of this utility model;

[0030] The following are the labels in the diagram: 1. Metal partition; 2. Water-permeable filter layer; 3. Non-metallic elastic frame; 4. Metal frame; 5. First fastener; 6. Second fastener; 7. Drain pipe; 8. Sliding handle; 9. Non-metallic boss.

[0031] 11. Feed inlet;

[0032] 21. Screen; 22. Filter cloth; 23. Filter cloth clip;

[0033] 31. Sealing ring; 32. Annular water groove; 33. First drain hole;

[0034] 41. Second drain hole;

[0035] 51. Elastic expansion bolt;

[0036] 61. Screw;

[0037] 71. Drainage outlet;

[0038] 81. Support block; 82. Slider; 83. Third fastener;

[0039] 821. Waist-shaped hole;

[0040] 100. Frame base; 200. Hydraulic drive unit; 300. Pressure plate; 400. Thrust plate. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0042] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0043] Please refer to Figures 1-6 The present invention provides a direct-pressure type elastic composite filter plate, including a metal partition 1, a water-permeable filter layer 2, a non-metallic elastic frame 3, a metal frame 4, a first fastener 5, and a second fastener 6.

[0044] The metal partition 1 has a feed inlet 11. Specifically, the metal partition 1 has a rectangular structure and the feed inlet 11 is located at the center of the metal partition 1.

[0045] The permeable filter layer 2 is symmetrically covered on both sides of the metal partition 1; specifically, a set of permeable filter layer 2 is provided on each side of the metal partition 1. The permeable filter layer 2 plays the role of filtering fluid and facilitating the rapid discharge of liquid, while blocking the discharge of suspended particles.

[0046] The non-metallic elastic frame 3 is symmetrically arranged on both sides of the metal partition 1, located on the side of the water-permeable filter layer 2 away from the metal partition 1. A first fastener 5 is provided on it, which presses and fixes the non-metallic elastic frame 3 and the water-permeable filter layer 2, and the water-permeable filter layer 2 and the metal partition 1. Specifically, the first fastener 5 is used to fix the non-metallic elastic frame 3 and the water-permeable filter layer 2.

[0047] Metal frames 4 are symmetrically arranged on both sides of the metal partition 1, located at the outer edge of the non-metallic elastic frame 3. A second fastener 6 is provided on the frame, pressing the outer edge of the non-metallic elastic frame 3 against the inner edge of the metal frame 4. Specifically, both the non-metallic elastic frame 3 and the metal frame 4 are rectangular frames, with the metal frame 4 being larger than the non-metallic elastic frame 3. A groove is provided on the inner edge of the metal frame 4, and a sealing ring strip is provided on the outer edge of the non-metallic elastic frame 3, embedded in the groove. The metal frame 4 serves to limit the movement of the non-metallic elastic frame 3 and further fixes its outer edge, improving the overall strength and stability of the composite filter plate.

[0048] In this embodiment, the metal partition 1 is made of metal, which can ensure the pressure resistance of the composite filter plate. The non-metallic elastic frame 3 is made of non-metallic elastic material, replacing the non-metallic diaphragm in the diaphragm filter plate structure. When the filter press is closed, multiple composite filter plates are arranged in the transverse direction, and two adjacent non-metallic elastic frames 3 enclose a filter chamber unit. The non-metallic elastic frame 3 is elastic, which can ensure that it deforms along with the filter cake when compressed, and the space of the filter chamber unit also changes accordingly. This application adopts a composite assembly method of metal and non-metal materials, which improves the strength of the filter plate and overcomes the problems of insufficient strength of non-metallic filter plates, excessive thickness of filter plates, and insufficient production capacity in diaphragm filter presses. It also overcomes the problems of heavy metal filter plates, long production cycle, and complex manufacturing process.

[0049] In a preferred embodiment, such as Figure 1As shown, both the non-metallic elastic frame 3 and the metal frame 4 are rectangular frames, and the size of the metal frame 4 is larger than that of the non-metallic elastic frame 3. The first fastener 5 includes a plurality of elastic expansion pins 51 evenly arranged along the circumference of the non-metallic elastic frame 3, and the second fastener 6 includes a plurality of screws 61 evenly arranged along the circumference of the metal frame 4. The non-metallic elastic frame 3 is fixedly connected to the water-permeable filter layer 2 and the metal partition 1 by a plurality of elastic expansion pins 51, and the metal frame 4 is fixedly connected to the metal partition 1 by a plurality of screws 61.

[0050] In this embodiment, the elastic expansion pin 51 is made of non-metallic elastic material and has a shoulder structure. The end face of the non-metallic elastic frame 3 is provided with an inclined angle. The inclined surfaces at both ends of the elastic expansion pin 51 correspond to the inclined surfaces of the non-metallic elastic frame 3. The elastic expansion pin 51 can ensure that the deformation is consistent with that of the non-metallic elastic frame 3 and also ensure that the non-metallic elastic frame 3 is easy to install.

[0051] In a preferred embodiment, such as Figure 3 and Figure 4 As shown, a sealing ring is protruding on the side of the non-metallic elastic frame 3 away from the water-permeable filter layer 2.

[0052] In this embodiment, the sealing ring 31 has a square ring structure and is integrally formed with the non-metallic elastic frame 3. The sealing ring 31 is also made of non-metallic elastic material and has a sealing function. When the filter press is closed, the sealing ring 31 between two adjacent filter plates is squeezed and tightly fitted. During filtration, the fluid to be filtered flows into the filter chamber unit between the two filter plates. The tight fit of the sealing rings 31 on the two adjacent filter plates can prevent the fluid in the filter chamber unit from flowing out from the connection between the two.

[0053] In a preferred embodiment, such as Figure 3 and Figure 4 As shown, the water-permeable filter layer 2 includes a screen 21 and a filter cloth 22. The filter cloth 22 is fixed by a filter cloth clamp 23 and covers the side of the screen 21 away from the metal partition 1.

[0054] In this embodiment, the screen 21 is composed of two layers of metal mesh with different aperture specifications welded together. The metal material can ensure the pressure resistance of the composite filter plate. The screen 21 has a through-hole, which is positioned corresponding to the feed port 11 on the metal partition 1. The filter cloth 22 also has an opening in the center, which is aligned with the through-hole. The filter cloth 22 covers the side of the screen 21 away from the metal partition 1. The filter cloth clamp 23 includes two ring-shaped fixing rings. The filter cloth clamp 23 is installed at the through-hole of the screen 21. The two fixing rings are clamped on both sides of the two screens 21. The two fixing clamps are fixed by screws, so that the fixing clamps press and fix the screen 21 and the filter cloth 22.

[0055] Preferably, it also includes a non-metallic boss 9, which includes a female boss and a male boss symmetrically arranged on both sides of the metal partition 1. The male boss and the female boss pass through the screen 21 and the metal partition 1 respectively and are then tightly connected to each other.

[0056] Specifically, there are four sets of non-metallic protrusions 9, which are arranged in a rectangular shape. The non-metallic protrusions 9 are made of non-metallic elastic material and include female protrusions and male protrusions. Corresponding holes are provided on the screen 21 and the metal partition 1. After the male and female protrusions pass through the corresponding holes on the screen 21 and the metal partition 1 respectively, they are tightened and connected to each other. After the filter press closes the membrane, the non-metallic protrusions 9 between two adjacent metal partitions 1 abut together to prevent the metal partitions 1 from deforming or tilting during pressing.

[0057] In a preferred embodiment, such as Figure 1 , Figure 3 and Figure 4 As shown, an annular water groove 32 is recessed inward on the side of the non-metallic elastic frame 3 near the screen 21, and the outer edge of the screen 21 extends into the annular water groove 32. Specifically, an annular water groove 32 is provided on the side of the non-metallic elastic frame 3 that contacts the metal partition 1, and the annular water groove 32 has a square ring structure; the screen 21 also has a square structure, and the outer edge of the screen 21 is set in the annular water groove 32.

[0058] Preferably, the bottom of the non-metallic elastic frame 3 is uniformly provided with a plurality of first drainage holes 33 that communicate with the annular water tank 32, and the bottom of the metal frame 4 is provided with a plurality of second drainage holes 41 that correspond one-to-one with the first drainage holes 33, and the first drainage holes 33 and the second drainage holes 41 are connected.

[0059] A drain pipe 7 is provided below the metal frame 4. The top of the drain pipe 7 has an opening that communicates with the second drain hole 41. The inside of the drain pipe 7 is hollow to form a receiving cavity, and the top is set as an open structure. Drain outlets 71 are provided at both ends of the drain pipe 7.

[0060] In this embodiment, after the filter press is closed, multiple composite filter plates are arranged laterally to form multiple filter chamber units. The fluid to be treated flows into the filter chamber unit from the feed inlet 11 to complete the filtration. During the secondary pressing, two adjacent composite filter plates are squeezed and deformed, and the space inside the filter chamber unit is reduced again. The fluid in the filter chamber unit passes through the filter cloth 22 and flows into the screen 21, and then flows into the annular water tank 32 through the gaps on the screen 21. Then, it flows into the drain pipe 7 through the first drain hole 33 and the second drain hole 41 in sequence, and finally is discharged from the drain outlets 71 at both ends of the drain pipe 7, further squeezing out the extra water in the filter cake and reducing the moisture content of the filter cake.

[0061] In a preferred embodiment, such as Figure 1 and Figure 5As shown, sliding handles 8 are symmetrically arranged on both sides of the metal frame 4. Each sliding handle 8 includes a support block 81 fixedly connected to the metal frame 4 and a slider 82 slidably connected to the support block 81. The slider 82 can move along the length of the metal partition 4 and is fixed by a third fastener 83. Specifically, each metal frame 4 is provided with two sliding handles 8. The slider 82 on one sliding handle 8 can be fixedly connected to the support block 81, and the slider 82 on the other sliding handle 8 can be slidably connected to the support block 81. Alternatively, both sliders 82 on both sliding handles 8 can be slidably connected to the support block 81. In this way, the distance between the two sliders 82 can be adjusted to correspond to the position of the slide rail on the compressor frame, thereby realizing the sliding of the composite filter plate.

[0062] Preferably, the support block 81 has a fastening hole, the slider 82 has a slotted hole 821, and the third fastener 83 includes a fastening bolt, one end of which passes through the slotted hole 821, is inserted into the fastening hole, and is threaded into the fastening hole. Specifically, the bottom of the support block 81 is provided with a sliding groove, and the support block 81 is slidably connected to the sliding groove. When the position of the slider 82 does not correspond to the position of the slide rail on the filter press, the slider 82 can be manually slid to align with the slide rail. After the position is adjusted, the slider 82 is fixed by the fastening bolt.

[0063] An embodiment of this utility model provides an ultra-high pressure filter press, including the direct-pressure type elastic composite filter plate of this application, and also including a frame base 100, a hydraulic drive device 200, and a pressing plate 300 and a thrust plate 400 disposed on the frame base 100 on both sides of the direct-pressure type elastic composite filter plate. The output end of the hydraulic drive device 200 is connected to the pressing plate 300 and is used to push the pressing plate 300, the direct-pressure type elastic composite filter plate and the thrust plate 400 to close together, and a filter chamber unit is formed between two adjacent sets of direct-pressure type elastic composite filter plates.

[0064] In this embodiment, multiple composite filter plates are arranged between the pressing plate 300 and the thrust plate 400. The composite filter plates are slidably connected to the slide rails on the frame base 100. When the filter press closes the membrane, the hydraulic drive device 200 drives the pressing plate 300 to approach the composite filter plates, so that the multiple composite filter plates and the thrust plate 400 are closed together, and a filter chamber unit is formed between two adjacent composite filter plates. The thrust plate 400 is provided with a feed inlet. The fluid to be treated enters the multiple filter chamber units through the feed inlet. During the feeding process, filtration and pressing are completed to achieve solid-liquid separation. When the hydraulic drive device 200 pushes the pressing plate 300 for secondary pressing, the non-metallic elastic frame 3 on the two adjacent composite filter plates is compressed and deformed. The filter chamber unit space between the non-metallic elastic frame 3 and the metal partition 1 is reduced again. The water in the fluid passes through the filter cloth 22 and flows into the screen 21. It then flows through the gaps in the screen 21 into the annular water groove 32 on the non-metallic elastic frame 3, and then flows into the drain pipe 7 through the first drain hole 33 and the second drain hole 41 in sequence, further pressing out the extra water in the filter cake and reducing the moisture content of the filter cake. This application uses only a single hydraulic pressure as the pressing source, which is less prone to failure. Moreover, the filter press of this application does not require the use of a high-pressure water pressing system, which reduces the wear on the membrane plates, saves the maintenance and replacement costs of the equipment, and reduces the equipment investment cost.

[0065] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0066] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0067] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A direct-pressure type elastic composite filter plate, characterized in that, include: A metal partition (1) has a feed inlet (11) on it; A water-permeable filter layer (2) is symmetrically covering both sides of the metal partition (1); A non-metallic elastic frame (3) is symmetrically arranged on both sides of the metal partition (1), located on the side of the water-permeable filter layer (2) away from the metal partition (1), and a first fastener (5) is provided on it. The first fastener (5) presses and fixes the non-metallic elastic frame (3) and the water-permeable filter layer (2) and the water-permeable filter layer (2) and the metal partition (1). A metal frame (4) is symmetrically arranged on both sides of the metal partition (1) and located at the outer edge of the non-metallic elastic frame (3). A second fastener is provided on it, which presses the outer edge of the non-metallic elastic frame (3) against the inner edge of the metal frame (4).

2. The direct-pressure type elastic composite filter plate according to claim 1, characterized in that, Both the non-metallic elastic frame (3) and the metal frame (4) are rectangular frames. The first fastener (5) includes a plurality of elastic expansion bolts (51) evenly arranged along the circumference of the non-metallic elastic frame (3). The second fastener includes a plurality of screws (61) evenly arranged along the circumference of the metal frame (4). The non-metallic elastic frame (3) is fixedly connected to the water-permeable filter layer (2) and the metal partition (1) by a plurality of elastic expansion bolts (51). The metal frame (4) is fixedly connected to the metal partition (1) by a plurality of screws (61).

3. The direct-pressure type elastic composite filter plate according to claim 2, characterized in that, A sealing ring (31) is provided on the side of the non-metallic elastic frame (3) away from the water-permeable filter layer (2).

4. The direct-pressure type elastic composite filter plate according to claim 1, characterized in that, The permeable filter layer (2) includes a screen (21) and a filter cloth (22), the filter cloth (22) being fixed by a filter cloth clip (23) and covering the side of the screen (21) away from the metal partition (1).

5. A direct-pressure type elastic composite filter plate according to claim 4, characterized in that, It also includes non-metallic bosses (9), which include female bosses and male bosses symmetrically arranged on both sides of the metal partition (1). The male bosses and the female bosses pass through the screen (21) and the metal partition (1) respectively and are then tightly connected to each other.

6. The direct-pressure type elastic composite filter plate according to claim 4, characterized in that, The non-metallic elastic frame (3) has an inwardly recessed annular water groove (32) on one side of the screen (21) near the screen (21), and the outer edge of the screen (21) extends into the annular water groove (32).

7. A direct-pressure type elastic composite filter plate according to claim 6, characterized in that, The bottom of the non-metallic elastic frame (3) is uniformly provided with a plurality of first drainage holes (33) that communicate with the annular water tank (32), and the bottom of the metal frame (4) is provided with a plurality of second drainage holes (41) that correspond one-to-one with the first drainage holes (33). The first drainage holes (33) and the second drainage holes (41) are connected. A drain pipe (7) is provided below the metal frame (4). The top of the drain pipe (7) is provided with an opening that communicates with the second drain hole (41), and both ends of the drain pipe (7) are provided with drain outlets (71).

8. The direct-pressure type elastic composite filter plate according to claim 1, characterized in that, The metal frame (4) is symmetrically provided with sliding handles (8) on both sides. The sliding handles (8) include a support block (81) fixedly connected to the metal frame (4) and a slider (82) slidably connected to the support block (81). The slider (82) can move along the length direction of the metal partition (1) and be fixed by a third fastener (83).

9. A direct-pressure type elastic composite filter plate according to claim 8, characterized in that, The support block (81) has a fastening hole, the slider (82) has a waist-shaped hole (821), and the third fastener (83) includes a fastening bolt. One end of the fastening bolt passes through the waist-shaped hole (821), is inserted into the fastening hole, and is threaded into the fastening hole.

10. An ultra-high pressure filter press, characterized in that, The filter includes a direct-pressure type elastic composite filter plate as described in any one of claims 1 to 9; it also includes a frame base (100), a hydraulic drive device (200), and a pressing plate (300) and a thrust plate (400) disposed on the frame base (100) on both sides of the direct-pressure type elastic composite filter plate. The output end of the hydraulic drive device (200) is connected to the pressing plate (300) and is used to push the pressing plate (300), the direct-pressure type elastic composite filter plate and the thrust plate (400) to close together, and a filter chamber unit is formed between two adjacent sets of the direct-pressure type elastic composite filter plates.

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