Filter assembly of filter press

Abstract

The utility model provides a filter assembly of a filter press, and relates to the technical field of filter presses. The filter assembly of the filter press comprises a frame body which is at least provided with a butt joint port in the middle; the first side of the movable filter plate is rotationally arranged on the frame body; the movable filter plate is matched with the butt joint port; wherein the other side, opposite to the first side, of the movable filter plate is a second side, and a deflection mechanism is arranged on the second side; when the filter press is pressed, the movable filter plate can be embedded in the butt joint port; when the filter press is opened, the deflection mechanism can drive the movable filter plate to rotate relative to the frame body, so that the distance between the second side of the movable filter plate and the frame body is increased; by adopting a special structure and changing the moving mode of the filter plate, the filter cake can naturally fall off conveniently under the action of gravity.

Description

Technical Field

[0001] This utility model relates to the field of filter press technology, specifically to a filter press filtration component. Background Technology

[0002] In coal washing operations, plate and frame filter presses are commonly used to further separate coal slurry from coal slurry water and to recover water resources. Plate and frame filter presses are solid-liquid separation equipment widely used in chemical, pharmaceutical, food processing, and environmental protection fields. Their working principle is based on pressure filtration; by applying pressure, liquid is forced through a filter cloth, while solid particles are trapped in the filter chamber, forming a filter cake. The structure of a plate and frame filter press generally includes hydraulic cylinders mounted on a frame, and multiple filter plates driven and controlled by these hydraulic cylinders.

[0003] After the filtration process is completed, the filter cake needs to be removed from the filter plates in a plate and frame filter press. The cake's detachment after the filter plates are opened relies primarily on gravity and the filter plate's structural design. However, existing filter plates typically require tapping or vibration after being opened to help loosen and remove the cake. Manual tools (such as rubber mallets) or automatic vibration devices can be used, but these methods are not only inefficient but also prone to damaging the filter plates. Utility Model Content

[0004] This invention addresses the problem that existing plate and frame filter presses require striking or vibrating the filter plates to loosen and detach the filter cake, which is inefficient and easily damages the filter plates. It provides a filter press assembly with a special structure that, by changing the movement of the filter plates, allows the filter cake to easily detach naturally using gravity.

[0005] The technical solution adopted in this utility model is:

[0006] A filter press assembly, comprising:

[0007] The frame, having at least a central interface; and

[0008] A movable filter plate is rotatably mounted on the frame on its first side; and the movable filter plate is adapted to the interface.

[0009] The movable filter plate has a second side opposite to the first side, and a deflection mechanism is provided on the second side. When the filter press is tightened, the movable filter plate can be embedded in the interface. When the filter press is opened, the deflection mechanism can drive the movable filter plate to rotate relative to the frame, thereby increasing the distance between the second side of the movable filter plate and the frame.

[0010] Furthermore, the frame is provided with a guide hole, which is used to slide onto the guide rod of the filter press.

[0011] Furthermore, a spraying mechanism is provided on the frame.

[0012] Furthermore, the spraying mechanism includes a diversion box connected to the frame; the diversion box is provided with an inlet for connecting the spray water pipe and a diversion nozzle; the diversion nozzle can spray the movable filter plate when the filter press is opened.

[0013] Furthermore, guide rollers are provided on opposite sides of the frame, and the guide rollers are used to roll on guide rails located at the edges of both sides of the filter press.

[0014] Furthermore, protective components are provided on opposite sides of the frame, and on the outer side of the guide roller.

[0015] Furthermore, a groove is provided on the second side of the movable filter plate; a baffle that can be inserted into the groove is provided on the frame.

[0016] Furthermore, a hinge seat is provided on the first side of the movable filter plate; a hinge shaft is provided on the frame; and the hinge shaft is hinged to the hinge seat.

[0017] Furthermore, the deflection mechanism includes a first rotating shaft disposed on the movable filter plate and a second rotating shaft disposed on the frame; a first movable member is hinged to the first rotating shaft, and a third rotating shaft is hinged to the other end of the first movable member; a second movable member is hinged to the second rotating shaft, and the other end of the second movable member is hinged to the third rotating shaft; and a torsion spring is disposed between the first movable member and the second movable member.

[0018] Furthermore, limiters are provided at both ends of the third rotating shaft.

[0019] The beneficial effects of this utility model are:

[0020] 1. This utility model, by setting up a frame and filter plate that can both interlock and rotate relative to each other, changes the separation and connection method of the frame and filter plate. Combined with the deflection mechanism set between the frame and the movable filter plate, the frame and the movable filter plate can automatically separate after the filter press is opened, and the distance between the second side of the movable filter plate and the frame is increased, maintaining an inclined state. Thus, the filter cake on the filter plate can be easily removed by gravity. This solves the problem that the existing plate and frame filter press requires knocking or vibrating the filter plate to help loosen and fall off the filter cake, which is inefficient and easily damages the filter plate.

[0021] 2. This utility model also provides a first rotating shaft, a second rotating shaft, and a third rotating shaft on the deflection mechanism, as well as a first movable part and a second movable part hinged between the three rotating shafts. In conjunction with a torsion spring, the torsion spring is used to store force during the pressing process of the filter press. The torsion spring is then used to release the force, which drives the separation of the frame and the movable filter plate and keeps the movable filter plate tilted. This achieves the function with a simple structure, avoids the need for additional automated equipment, is more energy-efficient and environmentally friendly, and can reduce equipment modification investment. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional schematic diagram of the compressed state of the filter assembly according to an embodiment of the present utility model;

[0024] Figure 2 This is a three-dimensional schematic diagram of the filter assembly in the open state according to an embodiment of the present utility model;

[0025] Figure 3 This is a front view of the filter assembly in the compressed state according to an embodiment of the present invention;

[0026] Figure 4 This utility model Figure 3 A magnified view of point A;

[0027] Figure 5 This is a bottom view of the filter assembly in the open state according to an embodiment of the present invention.

[0028] Reference numerals: 100-frame, 101-guide hole, 110-interface, 120-hinge shaft, 130-extension, 140-guide roller, 150-protective component, 160-baffle;

[0029] 200-Modible filter plate, 201-First side, 202-Second side, 210-Filter element, 220-Hinge seat, 230-Groove;

[0030] 300-Deflection mechanism, 310-First rotating shaft, 320-Second rotating shaft, 330-Third rotating shaft, 332-Limiting component, 340-First moving component, 350-Second moving component, 360-Torsion spring;

[0031] 400 - Spraying mechanism, 410 - Inlet, 420 - Diverter box, 430 - Diverter nozzle. Detailed Implementation

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.

[0034] The embodiments of the utility model will now be described in detail with reference to the accompanying drawings.

[0035] Example 1

[0036] After the existing plate and frame filter press completes the filtration process, it is usually necessary to knock or vibrate the filter plates to help loosen and fall off the filter cake. However, this method is not only inefficient, but also easy to damage the filter plates.

[0037] To address the aforementioned problems in the prior art, this embodiment provides a filter press assembly for pressing and filtering coal slurry water on a filter press. The filter plates of this assembly employ a special structure, and by altering the movement of the filter plates, the filter cake can be easily and naturally detached using gravity. Please refer to [link to relevant documentation]. Figures 1-5 The filter press assembly mainly includes: frame 100, movable filter plate 200 and deflection mechanism 300, etc.

[0038] The frame 100 is movably mounted on tracks along both sides of the filter press, controlled by the hydraulic cylinders and pressure plates of the filter press, to press and open multiple filter components of the filter press. For example... Figure 1 , Figure 3As shown, the outer edge of the frame 100 is roughly rectangular, and a roughly rectangular interface 110 is provided in the middle of the frame 100. A hinge shaft 120 is provided on the side of the upper frame of the frame 100, with its middle section connected to the side of the upper frame of the frame 100 and its two ends extending to the sides; the hinge shaft 120 is used to rotatably connect the movable filter plate 200. Simultaneously, several guide holes 101 are also provided on the upper frame of the frame 100, which are used to slide onto the guide rod of the filter press, ensuring that the filter components on the filter press remain aligned during the pressing and releasing process.

[0039] The movable filter plates 200 are used to filter and separate coal slurry and water in the coal slurry water during the pressing process of the filter press. The coal slurry is retained in the filter chamber between the movable filter plates 200 to form a filter cake, while the filtered water is recycled through the filtrate discharge pipe of the filter press. The outer edge of the movable filter plates 200 is roughly rectangular and is adapted to the shape of the interface 110 of the frame 100. A filter element 210 is provided in the middle of the movable filter plates 200. The filter element 210 can filter out the water in the coal slurry water, while the coal slurry particles are retained in the filter chamber between the movable filter plates 200. Two hinge seats 220 are provided on the outer side of the frame of the first side 201 of the movable filter plates 200. The two hinge seats 220 are respectively located at both ends of the first side 201 and are hinged to the hinge shaft 120 of the frame 100, so that the movable filter plates 200 can rotate relative to the frame 100 and insert and disengage from the interface 110.

[0040] The deflection mechanism 300 is used to control the position and state of the movable filter plate 200 on the frame 100. In this embodiment, two sets of deflection mechanisms 300 are symmetrically arranged on the frame 100 and the movable filter plate 200 on two sides other than the first side 201 and the second side 202. Each side of the deflection mechanism 300 mainly includes a first rotating shaft 310, a second rotating shaft 320, a third rotating shaft 330, a first movable member 340, and a second movable member 350. Among them, the first rotating shaft 310 and the second rotating shaft 320 are respectively located on the outer edge of the movable filter plate 200 and the frame 100 near the second side 202, and extend outward from the frame 100 and the movable filter plate 200, respectively. Meanwhile, a first movable member 340 and a second movable member 350 are rotatably mounted on the outward-facing ends of the first rotating shaft 310 and the second rotating shaft 320, respectively. The first movable member 340 has two hinge holes at both ends, one hinge hole being hinged to the first rotating shaft 310 and the other hinge hole being hinged to the third rotating shaft 330. The second movable member 350 also has two hinge holes at both ends, one hinge hole being hinged to the second rotating shaft 320 and the other hinge hole being hinged to the third rotating shaft 330. Furthermore, a torsion spring 360 is fitted onto the third rotating shaft 330; the two torsion arms of the torsion spring 360 are connected to the first rotating shaft 310 and the second rotating shaft 320, respectively, thereby allowing adjustment of the included angle between the first rotating shaft 310 and the second rotating shaft 320 through force storage and release.

[0041] One specific working method of this embodiment is as follows:

[0042] During use, pre-tightening is first performed by briefly pressing the "Start" button on the filter press and then briefly pressing the "Tighten" button. The hydraulic cylinder pushes the clamping plate to tighten the multiple filter components on the filter press. When the clamping force reaches the set high pressure, the hydraulic system automatically stops. At this time, the movable filter plate 200 is embedded in the interface 110 of the frame 100. After the filter press is tightened, feeding can begin. Start the feed pump and slowly open the feed valve, gradually increasing the feed pressure to the normal pressure. Then observe the liquid output from the filter press and the leakage between the filter components. After filtering for a period of time, the liquid output from the filter press outlet gradually decreases, indicating that the coal slime in the filter chamber is gradually filling. When no liquid or only a small amount of liquid is discharged from the filtrate discharge pipe, it indicates that the filter residue in the filter chamber has been removed. The filter press is fully filled to form a filter cake. If washing or drying of the filter cake is required, it can be done subsequently. If washing or drying is not required, the filter cake can be unloaded. When unloading the filter cake, first close the feed pump and feed valve, and the washing liquid or air inlet device and valve. Then press and hold the "Release" button on the filter press. The hydraulic cylinder drives the pressing plate to retract. After retracting to the appropriate position, release the "Release" button. At this time, the filter press opens, and the deflection mechanism 300 drives the movable filter plate 200 to rotate, increasing the distance between the second side 202 of the movable filter plate 200 and the frame 100. The movable filter plate 200 is in an inclined state, that is, the distance between the second side 202 of the movable filter plate 200 and the frame 100 is increased, so that the filter cake can be easily detached naturally by gravity.

[0043] In this embodiment, the filter press assembly is configured with a frame 100 and a movable filter plate 200 that can both interlock and rotate relative to each other. This changes the separation and connection method of the frame 100 and the movable filter plate 200. Combined with the deflection mechanism 300 provided between the frame 100 and the movable filter plate 200, the frame 100 and the movable filter plate 200 can automatically separate after the filter press is opened. This also increases the distance between the second side 202 of the movable filter plate 200 and the frame 100, maintaining an inclined state. As a result, the filter cake on the filter plate can be easily detached by gravity. This solves the problem that the existing plate and frame filter press requires knocking or vibrating the filter plate to help loosen and fall off the filter cake, which is inefficient and easily damages the filter plate.

[0044] Meanwhile, the deflection mechanism 300 in this embodiment also provides a first rotating shaft 310, a second rotating shaft 320, a third rotating shaft 330, and a first movable member 340 and a second movable member 350 hinged between the three rotating shafts, and works in conjunction with a torsion spring 360. This utilizes the pressing process of the filter press to store force on the torsion spring 360, and then releases the separation between the drive frame 100 and the movable filter plate 200 through the torsion spring 360, keeping the movable filter plate 200 tilted. Thus, the function is achieved with a simple structure, avoiding the need for additional automated equipment, making it more energy-efficient and environmentally friendly, and reducing equipment modification investment.

[0045] Specifically, in this embodiment, a spraying mechanism 400 is also provided at the top of the upper frame of the frame 100. The spraying mechanism 400 can cooperate with the movable filter plate 200, which is tilted when opened, so as to conveniently and automatically perform efficient and rapid cleaning on the filter plate after the filter cake has been removed. The spraying mechanism 400 mainly includes an inlet 410, a diversion box 420, and a diversion nozzle 430, etc. The distribution box 420 is connected to the top of the upper frame of the frame 100, and a distribution pipeline is provided inside the distribution box 420. An inlet 410 is located at the top of the distribution box 420 and is used to connect to an external spray water pipe to allow spray water to flow into the distribution box 420. Five distribution nozzles 430 are located on the side of the distribution box 420, with their outlets spraying directly onto the inclined movable filter plate 200 to clean the filter residue adhering to the sealing surface of the filter element, preventing the residue from being trapped on the sealing surface and affecting the sealing performance, thus preventing leakage. Furthermore, the five distribution nozzles 430 are positioned at the intervals between the multiple guide holes 101 to prevent the cleaning fluid sprayed from the distribution nozzles 430 from being obstructed by the guide rods fitted into the guide holes 101, thus avoiding affecting the cleaning effect. Meanwhile, extensions 130 are provided on the frames 100 on both sides of the spraying mechanism 400, and guide rollers 140 are provided at the bottom of the extensions 130 on both sides. The guide rollers 140 are used to roll on the guide rails set on both sides of the filter press, reducing friction and facilitating the movement of the filter assembly of the filter press in this embodiment during the operation of the filter press. In addition, protective members 150 are provided on the outer surfaces of the extensions 130 on both sides. The protective members 150 extend towards the bottom of the filter press and can separate the guide rollers 140 below from the external space on both sides, preventing the guide rollers 140 from being affected by external factors during operation, and preventing hair, clothing, etc. from being caught in the guide rollers 140 when the operator is inspecting.

[0046] Specifically, in this embodiment, the filter element 210 of the movable filter plate 200 is a nylon filter cloth. Furthermore, a long, narrow groove 230 is provided on the second side 202 of the movable filter plate 200, and a baffle 160, corresponding in position and matching in shape and size, is provided on the frame 100. When the movable filter plate 200 is embedded in the frame 100, the baffle 160 is inserted into the groove 230, preventing filter cake and filter residue from leaking out of the filter chambers between the filter plates. When the movable filter plate 200 is separated from the frame 100, the groove 230 allows the filter cake to more easily detach from the surface of the movable filter plate 200.

[0047] Specifically, in this embodiment, the third rotating shaft 330 of the deflection mechanism 300 is further provided with limiting members 332 at both ends. The diameter of the limiting member 332 is slightly larger than the diameter of the hinge holes on the first movable member 340 and the second movable member 350, thereby preventing the third rotating shaft 330 from coming out of the hinge holes. In one or more other embodiments, the relative rotation of the frame 100 and the movable filter plate 200 can also be driven by setting a deflection mechanism 300 controlled by a cylinder or motor. The rotation angle control of these automated devices is more precise, but the relative cost and structural complexity will be significantly higher than the deflection mechanism 300 in the first embodiment, and waterproof measures are required to prevent the filtered liquid from seeping into the electrical equipment.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A filter assembly for a filter press, characterized in that, Include: The frame (100) has at least a central interface (110); and A movable filter plate (200) has its first side (201) rotatably mounted on the frame (100); and the movable filter plate (200) is adapted to the interface (110); The movable filter plate (200) has a second side (202) opposite to the first side (201), and a deflection mechanism (300) is provided on the second side (202). When the filter press is tightened, the movable filter plate (200) can be embedded in the interface (110). When the filter press is opened, the deflection mechanism (300) can drive the movable filter plate (200) to rotate relative to the frame (100), thereby increasing the distance between the second side (202) of the movable filter plate (200) and the frame (100).

2. The filter assembly of the filter press as described in claim 1, characterized in that, The frame (100) is provided with a guide hole (130), which is used to slide on the guide rod of the filter press.

3. The filter press assembly as described in claim 1, characterized in that, A spraying mechanism (400) is provided on the frame (100).

4. The filter press assembly as described in claim 3, characterized in that, The spraying mechanism (400) includes a diversion box (420) connected to the frame (100); the diversion box (420) is provided with an inlet (410) for connecting the spray water pipe and a diversion nozzle (430); the diversion nozzle (430) can spray the movable filter plate (200) when the filter press is opened.

5. The filter assembly for a filter press as described in claim 1, characterized in that, Guide rollers (140) are provided on opposite sides of the frame (100), and the guide rollers (140) are used to roll on the guide rails set on both sides of the filter press.

6. The filter assembly for a filter press as described in claim 5, characterized in that, Protective elements (150) are provided on opposite sides of the frame (100) and on the outside of the guide roller (140).

7. The filter assembly for a filter press as described in claim 1, characterized in that, A groove (230) is provided on the second side (202) of the movable filter plate (200); a baffle (160) that can be inserted into the groove (230) is provided on the frame (100).

8. The filter assembly for a filter press as described in claim 1, characterized in that, A hinge seat (220) is provided on the first side (201) of the movable filter plate (200); a hinge shaft (120) is provided on the frame (100); the hinge shaft (120) is hinged to the hinge seat (220).

9. The filter assembly of the filter press as described in any one of claims 1-8, characterized in that, The deflection mechanism (300) includes a first rotating shaft (310) disposed on the movable filter plate (200) and a second rotating shaft (320) disposed on the frame (100); a first movable member (340) is hinged to the first rotating shaft (310), and a third rotating shaft (330) is hinged to the other end of the first movable member (340); a second movable member (350) is hinged to the second rotating shaft (320), and the other end of the second movable member (350) is hinged to the third rotating shaft (330); and a torsion spring (360) is disposed between the first movable member (340) and the second movable member (350).

10. The filter press assembly as described in claim 9, characterized in that, Limiting elements (332) are provided at both ends of the third rotating shaft (330).

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