A filter plate fixing device of a disc filter

Abstract

The utility model belongs to disc filter filter disc installation technical field, specifically disclose a filter plate fixing device of disc filter, including annular guide rail and a plurality of five claw clamps, the side clamping plate of five claw clamps both sides passes through corresponding long slot and filter plate big head outer circle is equipped with n shape filter cloth spring clamp side wall for clamping filter cloth and is in close contact, the plug -in board of five claw clamps end department passes through corresponding insertion hole and extends to the interface joint in adjacent filter plate, filter plate and annular guide rail are fixed respectively through five claw clamps and are connected, the structure design of five claw clamps is after overall assembly, has realized in four directions of filter plate all carried out effective fixation, the flatness is higher on the filtering surface, also avoids filter plate axial and circumferential direction before and after sliding in the rotation process, the overall stability of filter plate installation is promoted, avoids the damage caused by filter plate root repeated folding, effectively prolongs the service life of filter plate, filter plate overall fixed mode is simpler, and equipment maintenance is convenient.

Description

Technical Field

[0001] This utility model belongs to the technical field of disc filter installation technology, and specifically discloses a filter plate fixing device for a disc filter. Background Technology

[0002] Disc filters are commonly used in many industries where vacuum filtration is available. They are now widely used in the non-ferrous metals industry for aluminum hydroxide seed liquor and brine in alumina plants, power plant desulfurization gypsum, the chemical industry, bauxite flotation concentrate, flotation concentrate from various mines, and solid-liquid separation of coal slime in the coal industry.

[0003] In a disc filter, the filter discs rotate within a filter tank filled with slurry. Through vacuum pressure, the material is adsorbed, forming a filter cake and achieving solid-liquid separation. The filter disc is the main component of the disc filter, composed of multiple sector-shaped plates. One end of each sector plate is fixed to a central shaft, while the other end is connected by a set of guide rails to form a complete ring that holds the outer circumference of the filter disc. To ensure stable operation, the flatness and stability of the filter disc surface are crucial during installation. Currently, there are two main types of guide rails used in disc filters: one type uses a tie rod between two sector plates to tighten the outer pressure strip. The length of the pressure strip is typically a quarter-circle arc. This method controls the sway of the filter disc through the force of the tie rod, but the position of the tie rod reduces the effective filtration area of ​​the filter and makes installation very complex. The second type uses a pressure strip to fix the outer ring of the filter disc. The pressure strip has clips that fix the filter plate radially, controlling the axial sway of the filter plate's filtration surface. When the filter disc diameter is large and the filter plate is long, a single filter plate will fold repeatedly at different angles as it rotates, which can easily cause damage to the filter plate. Summary of the Invention

[0004] To address the problems in the background art, this utility model discloses a filter plate fixing device for a disc filter, including an annular guide rail and a five-jaw clamp. It has a stable structure, is easy to install and disassemble, and can effectively control the axial and circumferential sliding of the filter plate when it rotates.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: A filter plate fixing device for a disc filter, wherein the filter disc of the disc filter is composed of several fan-shaped filter plates. A matching annular guide rail is provided on the edge of the filter disc. Two elongated holes are provided on both sides of the annular guide rail at intervals, corresponding to the positions of the filter plates. The elongated holes extend circumferentially along the annular guide rail. Insertion holes are provided on the annular guide rail at positions corresponding to the seams between adjacent filter plates. The insertion holes extend along the width direction of the annular guide rail. The filter plates and the annular guide rail are fixedly connected by five-jaw clamps. The five-jaw clamps include a top plate that abuts against the annular guide rail. Two side clamping plates are provided at intervals on both sides of the top plate. The side clamping plates pass through the corresponding elongated holes and abut against the side wall of an n-shaped filter cloth spring clamp for clamping the filter cloth on the outer circumference of the larger end of the filter plate. An insertion plate is also connected to one end of the top plate and is perpendicular to the side clamping plates. The insertion plate extends through the corresponding insertion hole into the seam between adjacent filter plates.

[0006] Furthermore, the filter plate fixing device of the disc filter has a central hole in the middle of the top plate, and coaxial through holes are provided on the annular guide rail at the corresponding positions of the central hole. A tightening screw is provided in the central hole, and the tightening screw is threadedly connected to a nut and a locking nut respectively. The nut is located above the five-jaw clamp top plate, and the locking nut is located above the annular guide rail and fixedly connected to the annular guide rail. The lower end of the tightening screw is in close contact with the top wall of the filter cloth spring clamp.

[0007] Furthermore, in the filter plate fixing device of the disc filter, the elongated hole is matched with the corresponding side plate, and the size of the elongated hole is slightly larger than the size of the side plate.

[0008] Furthermore, in the filter plate fixing device of the disc filter, the insertion hole is matched with the corresponding insertion plate, and the size of the insertion hole is slightly larger than the size of the insertion plate.

[0009] Furthermore, in the filter plate fixing device of the disc filter, the thickness direction of the filter cloth spring clip is slightly smaller than the width of the five-jaw clamp, and a folded edge is provided on the lower edge of the filter cloth spring clip, which abuts against the lower end of the side plate of the five-jaw clamp.

[0010] Compared with the prior art, the beneficial effects of this utility model are: The filter plate fixing device of this utility model disc filter includes an annular guide rail and five-claw clamps corresponding to the number of filter plates. The annular guide rail is an integrated design with good integrity, resulting in higher operational stability after the entire disc of filter plates is installed. The structure of the five-claw clamps effectively fixes the filter plates in four directions after overall assembly, resulting in higher flatness on the filter surface. It also prevents the filter plates from sliding back and forth in the axial and circumferential directions during rotation. The improved overall stability of the filter plate installation avoids damage caused by repeated folding at the root of the filter plates, effectively extending the service life of the filter plates. The overall fixing method of the filter plates is simpler, and the equipment is easier to maintain. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the installation state of the filter plate fixing device of this utility model; Figure 2 This is a cross-sectional structural schematic diagram of the filter plate fixing device of this utility model; Figure 3 This is a schematic diagram of the five-claw clamp in this utility model; In the above figure: 1-Filter plate; 2-Annular guide rail; 2.1-Elongated hole; 2.2-Insertion hole; 3-Five-claw clamp; 3.1-Top plate; 3.2-Side clamping plate; 3.3-Insertion plate; 3.4-Center hole; 4-Tightening screw; 5-Nut; 6-Filter cloth spring clamp; 7-Locking nut. Detailed Implementation

[0012] To better understand this utility model, the following embodiments further illustrate the content of this utility model, but the content of this utility model is not limited to the following embodiments.

[0013] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between 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.

[0014] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0015] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0016] Combined with appendix Figure 1-3This invention details a filter plate fixing device for a disc filter. The filter disc of the disc filter is composed of several fan-shaped filter plates 1. A matching annular guide rail 2 is provided on the edge of the filter disc. Two elongated holes 2.1 are provided on both sides of the annular guide rail 2 at intervals corresponding to the positions of the filter plates 1. The elongated holes 2.1 extend circumferentially along the annular guide rail 2. An insertion hole 2.2 is provided on the annular guide rail 2 at the position corresponding to the joint between adjacent filter plates 1. The insertion hole 2.2 extends along the width direction of the annular guide rail 2. That is, a total of four elongated holes 2.1 and one insertion hole 2.2 are provided on the annular guide rail 2 corresponding to one filter plate 1. The filter plates 1 and the annular guide rail 2 are fixedly connected by a five-claw clamp 3. The five-claw clamp 3 includes a top plate 3.1 that abuts against the annular guide rail 2. Along the width direction of the top plate 3.1, the top plate 3.1 is fixedly connected to the filter plates 1. Two side clamping plates 3.2 are respectively arranged on both sides of the filter plate 1 at intervals. The side clamping plates 3.2 pass through the corresponding elongated holes 2.1 and abut against the side wall of the n-shaped filter cloth spring clip 6 for clamping the filter cloth on the outer circle of the large end of the filter plate 1. At one end of the top plate 3.1, there is also an insert plate 3.3 arranged perpendicularly to the side clamping plates 3.2. The insert plate 3.3 passes through the corresponding insertion hole 2.2 and extends into the gap between adjacent filter plates 1. During operation, after the filter cloth is put on the filter plate 1, the outer circle of the large end is clamped into the filter cloth spring clip 6, and the small end of the filter plate 1 is fixed on the central shaft. The five-jaw clamp 3 is installed into the annular guide rail 2. The symmetrical four-jaw side clamping plates 3.2 in the five-jaw clamp 3 are clamped into the two sides of the filter cloth spring clip 6, and the other one-jaw insert plate 3.3 is clamped into the gap between the filter plates, realizing the fixed connection between the filter plate 1 and the annular guide rail 2. It can effectively control the back and forth sliding of the filter plate 1 along the axial and circumferential directions of the filter plate when the filter plate rotates.

[0017] As an optional design, the filter plate fixing device of the disc filter is preferably provided with a central hole 3.4 through the top plate 3.1 in the middle. Corresponding to the central hole 3.4 on the annular guide rail 2, there are coaxial through holes. A tightening screw 4 is provided in the central hole 3.4. The tightening screw 4 is threadedly connected to the nut 5 and the locking nut 7 respectively. The nut 5 is located above the top plate 3.1 of the five-jaw clamp 3. The locking nut 7 is located above the annular guide rail 2 and is fixedly connected to the annular guide rail 2. The lower end of the tightening screw 4 is in close contact with the top wall of the filter cloth spring clamp 6. During operation, the tightening screw 4 is screwed into the nut 5, through the central hole 3.4 of the top plate of the five-jaw clamp 3, and the tightening screw 4 is screwed into the locking nut 7. The screws are continuously screwed in until the lower end of the tightening screw 4 presses against the filter cloth spring clamp 6. Then the nut 5 is rotated until the rotating nut 5 is locked at the top of the five-jaw clamp.

[0018] As an optional design, the filter plate fixing device of the disc filter is preferred, wherein the elongated hole 2.1 is matched with the corresponding side clamping plate 3.2, and the size of the elongated hole 2.1 is slightly larger than the size of the side clamping plate 3.2; the insertion hole 2.2 is matched with the corresponding insertion plate 3.3, and the size of the insertion hole 2.2 is slightly larger than the size of the insertion plate 3.3, so as to facilitate the insertion of the five-claw clamp 3.

[0019] As an optional design, the filter plate fixing device of the disc filter is preferably such that the thickness direction of the filter cloth spring clip 6 is slightly smaller than the width of the five-claw clip 3, and a folded edge is provided on the lower edge of the filter cloth spring clip 6. The edge is in close contact with the lower end of the side plate 3.2 of the five-claw clip 3, so that the filter cloth spring clip 6 clamps the filter cloth.

[0020] The working process of this utility model is as follows: During operation, after the filter cloth is fitted onto the filter plate 1, the outer diameter of the larger end is inserted into the filter cloth spring clip 6, and the smaller end of the filter plate 1 is fixed on the central shaft. The five-jaw clip 3 is installed into the annular guide rail 2. The symmetrical four-jaw side clips 3.2 of the five-jaw clip 3 are inserted into both sides of the filter cloth spring clip 6, and the other claw insert 3.3 is inserted into the gap between the filter plates. The tightening screw 4 is screwed into the nut 5, which passes through the central hole 3.4 of the top plate of the five-jaw clip 3. The tightening screw 4 is screwed into the locking nut 7, and screwed in continuously until the lower end of the tightening screw 4 presses against the filter cloth spring clip 6. Then, the nut 5 is rotated until the rotating nut 5 is locked at the top of the five-jaw clip, thus achieving a fixed connection between the filter plate 1 and the annular guide rail 2. The filter plate fixing device of this invention can effectively control the back-and-forth sliding of the filter plate 1 along the axial and circumferential directions of the filter plate when the filter plate rotates. It is also structurally stable, easy to install, and easy to disassemble.

[0021] The above description is only an application implementation of this utility model, but the protection scope of this utility model is not limited thereto and cannot be used to limit the scope of rights of this utility model. Any equivalent changes made according to the technical solution of this utility model should be included within the protection scope of this utility model.

Claims

1. A filter plate fixing device for a disc filter, wherein the filter disc of the disc filter is composed of several sector-shaped filter plates, characterized in that: A matching annular guide rail is provided on the edge of the filter disc. Two elongated holes are provided on the annular guide rail at intervals on both sides corresponding to the filter plate. The elongated holes extend circumferentially along the annular guide rail. An insertion hole is provided on the annular guide rail at the position corresponding to the seam between adjacent filter plates. The insertion hole extends along the width direction of the annular guide rail. The filter plate and the annular guide rail are fixedly connected by a five-jaw clamp. The five-jaw clamp includes a top plate that abuts against the annular guide rail. Two side clamping plates are provided at intervals on both sides of the top plate. The side clamping plates pass through the corresponding elongated holes and abut against the side wall of the n-shaped filter cloth spring clamp for clamping the filter cloth on the outer circle of the large end of the filter plate. An insertion plate is also connected to one end of the top plate and is perpendicular to the side clamping plates. The insertion plate extends through the corresponding insertion hole into the seam between adjacent filter plates.

2. The filter plate fixing device for the disc filter according to claim 1, characterized in that: A central hole is provided in the middle of the top plate, and coaxial through holes are provided at the corresponding positions of the central hole on the annular guide rail. A tightening screw is provided in the central hole, and the tightening screw is threadedly connected to a nut and a locking nut respectively. The nut is located above the five-jaw clamp top plate, and the locking nut is located above the annular guide rail and fixedly connected to the annular guide rail. The lower end of the tightening screw is in close contact with the top wall of the filter cloth spring clamp.

3. The filter plate fixing device for the disc filter according to claim 2, characterized in that: The elongated hole is matched with the corresponding side plate, and the size of the elongated hole is slightly larger than the size of the side plate.

4. The filter plate fixing device for the disc filter according to claim 2, characterized in that: The socket is matched with the corresponding plug plate, and the size of the socket is slightly larger than the size of the plug plate.

5. The filter plate fixing device for the disc filter according to claim 2, characterized in that: The thickness of the filter cloth spring clip is slightly smaller than the width of the five-claw clamp. A folded edge is provided on the lower edge of the filter cloth spring clip, and the edge is in close contact with the lower end of the side plate of the five-claw clamp.

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