Filter cloth chassis mounting structure

Abstract

The utility model belongs to the field of filtering equipment, and particularly relates to a filter cloth chassis mounting structure which comprises a base, a filtering bracket and filter cloth laid on the filtering bracket are detachably connected to the base, the periphery of the filter cloth is fixed at the upper end of the periphery of the filtering bracket, and at least one group of filter cloth tensioning mechanism is arranged between the filter cloth and the filtering bracket. The filter cloth tensioning mechanism comprises an upper pressing block, a lower pressing block and a tensioning bolt, the lower pressing block is fixedly connected with the filter bracket and is provided with a screw hole, the filter cloth is clamped between the upper pressing block and the lower pressing block, and the tensioning bolt sequentially penetrates through the upper pressing block and the filter cloth and extends into the screw hole of the lower pressing block to achieve a thread fastening effect. According to the filter cloth tensioning mechanism, the filter cloth is tensioned and fixed through a matching structure among the upper pressing block, the lower pressing block and the tensioning bolt, the filter cloth can be conventionally detached on the filter bracket, and after the filter cloth is frequently detached, even if a screw hole of the filter cloth tensioning mechanism slips, the normal filtering and tensioning effect can be recovered by replacing the filter bracket.

Description

Technical Field

[0001] This utility model belongs to the field of filtration equipment, specifically relating to a filter cloth chassis mounting structure. Background Technology

[0002] The applicant's prior patent CN201820714026.6 discloses a filter cloth installation structure for a filtration device, including a base. A filter bracket and filter cloth laid on the filter bracket are fixedly mounted on the base. The filter bracket includes a horizontally placed filter plate and a support ring that fixes the filter plate and the outer periphery of the filter cloth. Several filter cloth tensioning mechanisms are arranged equidistantly around the circumference of the base below the filter plate. Each filter cloth tensioning mechanism includes a support seat, an upper pressure block, a lower pressure block, and a tensioning bolt. The support seat is fixed to the base, and the filter cloth is pressed between the upper and lower pressure blocks. The tensioning bolt passes vertically through the upper and lower pressure blocks and is threadedly engaged with the support seat. The head of the tensioning bolt abuts against the upper end face of the upper pressure block. The lower pressure block has a tensioning cavity shaped like a frustum with the smaller end facing downwards. This structure is typically used in large-diameter equipment. Compared to filter cloth fixing structures that only fix the outer periphery, it can significantly extend the filter cloth flatness time and ensure filtration efficiency. However, after frequent replacements of the above structure, the support seat on the base is prone to stripping. Since the base is usually also the bottom plate of the filter equipment tank, when the support seat on the base strips, the filter cloth tensioning mechanism cannot function, making it impossible to install and fix the filter cloth. During use, the filter cloth is prone to floating and damage, resulting in material loss. Only by replacing the entire base of the equipment can the normal filtration effect be restored. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and to provide a filter cloth chassis mounting structure.

[0004] The technical solution adopted by this utility model is as follows: a filter cloth chassis mounting structure includes a base, on which a filter bracket and a filter cloth laid on the filter bracket are detachably connected. The outer periphery of the filter cloth is fixed to the upper end of the outer periphery of the filter bracket. At least one set of filter cloth tensioning mechanisms is provided between the filter cloth and the filter bracket. The filter cloth tensioning mechanism includes an upper pressure block, a lower pressure block and a tensioning bolt. The lower pressure block is fixedly connected to the filter bracket and is provided with a screw hole. The filter cloth is sandwiched between the upper pressure block and the lower pressure block. The tensioning bolt passes through the upper pressure block in sequence, and the filter cloth extends into the screw hole of the lower pressure block to form a threaded fastening effect.

[0005] The upper end of the lower pressure block has a first mating groove that is larger at the top and smaller at the bottom. The shape of the upper pressure block is adapted to the shape of the first mating groove and is embedded in the first mating groove.

[0006] The upper pressure block is provided with a countersunk hole that matches the shape of the tensioning bolt.

[0007] A first sealing groove is formed on the circumferential side wall of the lower pressure block, and an O-ring is embedded in the first sealing groove.

[0008] The upper surface of the base is fixed with a support block corresponding to the filter cloth tensioning mechanism. The support block is in contact with or has a clearance fit with the lower end face of the pressure block.

[0009] The support block is welded to the base.

[0010] The filter bracket includes a filter plate with several filter holes and a support ring fixed to the outer periphery of the filter plate. The lower pressure block is fixed to the filter plate, the outer periphery of the filter cloth is fixed to the support ring, and the support ring is detachably mounted on the base.

[0011] The filter tray and the lower pressure block are integrally formed.

[0012] The support ring is provided with a pressure ring, and the outer periphery of the filter cloth is sandwiched between the pressure ring and the support ring, and the pressure ring and the support ring are connected by a threaded fastening structure.

[0013] The beneficial effects of this utility model are as follows: The filter cloth tensioning and fixing of this utility model is achieved through the cooperation structure between the upper pressure block, the lower pressure block and the tensioning bolt. The filter cloth can be removed from the filter bracket in the conventional way. After frequent removal, even if the screw hole of the filter cloth tensioning mechanism becomes stripped, the normal filtration tensioning effect can be restored by replacing the filter bracket. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0015] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0016] Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle;

[0017] Figure 3 for Figure 1 Enlarged schematic diagram of part B in the middle;

[0018] In the diagram, the components are: base-1, support block-101, filter bracket-2, filter plate-201, support ring-202, filter cloth-3, upper pressure block-4, lower pressure block-5, tension bolt-6, pressure ring-7, and O-ring seal-8. Detailed Implementation

[0019] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0020] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0021] The directional and positional terms used in this utility model, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are only for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0022] A filter cloth chassis mounting structure, such as Figure 1 As shown, the filter includes a base 1 and a filter bracket 2 that are detachably connected. A filter cloth 3 is laid on the filter bracket 2. The outer periphery of the filter cloth 3 is fixedly connected to the filter bracket 2 through an outer periphery fixing structure. The middle part of the filter cloth 3 is tensioned and fixed to the filter bracket 2 through at least one set of filter cloth tensioning mechanisms, so that the entire filter cloth 3 is laid flat on the filter bracket 2 to achieve a better filtration effect. The position and number of filter cloth tensioning mechanisms are set according to the size of the filter cloth.

[0023] The structure of the filter cloth tensioning mechanism is as follows: Figure 2 As shown, the system includes an upper pressure block 4, a lower pressure block 5, and a tension bolt 6. The lower pressure block 5 is fixedly connected to the filter bracket 2 and has a screw hole. The filter cloth 3 is sandwiched between the upper pressure block 4 and the lower pressure block 5. The tension bolt 6 passes through the upper pressure block 4 and the filter cloth 3 in sequence and extends into the screw hole of the lower pressure block to form a threaded fastening effect. A portion of the middle of the filter cloth 3 is pressed onto the lower pressure block 5 by the upper pressure block 4, and the upper pressure block 4 and the lower pressure block 5 are tightly connected by the tension bolt 6. The filter bracket 2 includes a filter plate 201 with several filter holes and a support ring 202 fixed to the outer periphery of the filter plate 201. The lower pressure block 5 is fixed to the filter plate 201. The filter plate 201 and the lower pressure block 5 are integrally formed to form a stable connection strength.

[0024] Furthermore, the upper end of the lower pressure block 5 has a first mating groove that is larger at the top and smaller at the bottom. The shape of the upper pressure block 4 matches the shape of the first mating groove and is embedded in the first mating groove, forming a larger tension pressure surface for the filter cloth 3. As the upper pressure block 4 is gradually pressed down by the head of the tensioning bolt 6, the filter cloth 3 gradually returns to a taut state, thereby extending its service life. Moreover, the tensioning bolt is installed from top to bottom, making installation more convenient. At the same time, it positions the filter tray, ensuring the stable and accurate installation of the filter tray. In addition, it also provides convenience for replacing filter cloths of different materials. Specifically, in this embodiment, the first mating groove is a frustum shape that is larger at the top and smaller at the bottom, and the upper pressure block 4 is also a frustum shape that matches its shape, which is convenient for processing.

[0025] The upper pressure block 4 is provided with a countersunk hole that matches the shape of the tension bolt 6. This allows the head of the tension bolt 6 to be hidden inside the upper pressure block 4, preventing the medium from accumulating near the filter cloth 3.

[0026] A first sealing groove is formed on the circumferential side wall of the lower pressure block 5, and an O-ring seal 8 is embedded in the first sealing groove. This provides a reliable seal and prevents the medium from leaking between the upper pressure block 4 and the lower pressure block 5.

[0027] Furthermore, a support block 101 is fixed to the upper surface of the base 1 corresponding to the filter cloth tensioning mechanism. The support block 101 is either in contact with or has a clearance fit with the lower end face of the lower pressure block 5. As shown in the figure, the support block 101 has a clearance fit with the lower end face of the lower pressure block 5. When the medium pressure is too high, the filter bracket 2 is allowed to deform slightly until the support block 101 and the lower end face of the lower pressure block 5 are in contact. The support block 101 then provides support for the lower pressure block 5, preventing irreversible deformation of the filter bracket 2. Alternatively, the support block 101 can be directly used to support the lower pressure block 5.

[0028] Furthermore, the support block 101 is welded to the base 1.

[0029] Among them, the structure of the peripheral fixed structure is as follows Figure 3 As shown, the filter cloth 3 is fixed to the support ring 202 on its outer periphery, and the support ring 202 is detachably mounted on the base 1. Specifically, the support ring 202 is provided with a pressure ring 7, and the filter cloth 3 is sandwiched between the pressure ring 7 and the support ring 202. The pressure ring 7 and the support ring 202 are connected by a threaded fastening structure, specifically by bolts. The support ring 202 and the base 1 are connected by a limiting fit. After assembly onto the filtration equipment, the base 1 is fixedly connected to the tank body via a flange connection, and the support ring 202 is sandwiched between the base 1 and the tank body.

[0030] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A filter cloth base mounting structure, comprising a base (1), wherein a filter bracket (2) and a filter cloth (3) laid on the filter bracket are detachably connected to the base (1), and the outer periphery of the filter cloth (3) is fixed to the upper outer periphery of the filter bracket (2), characterized in that: The filter cloth (3) and the filter bracket (2) are provided with at least one set of filter cloth tensioning mechanism, the filter cloth tensioning mechanism comprises an upper pressing block (4), a lower pressing block (5) and a tensioning bolt (6), the lower pressing block (5) is fixedly connected with the filter bracket (2) and is provided with a threaded hole, the filter cloth (3) is clamped between the upper pressing block (4) and the lower pressing block (5), the tensioning bolt (6) is sequentially threaded through the upper pressing block (4), the filter cloth (3) and inserted into the threaded hole of the lower pressing block (5) to form a threaded fastening effect.

2. The cloth bottom mounting structure according to claim 1, characterized by: The lower pressing block (5) is formed with a first matching groove with a large upper part and a small lower part, and the upper pressing block (4) is embedded in the first matching groove and has a shape matched with the shape of the first matching groove.

3. The cloth bottom mounting structure according to claim 2, characterized by: The upper pressing block (4) is provided with a countersunk hole matched with the shape of the tensioning bolt (6).

4. The cloth bottom mounting structure according to claim 2, characterized by: The lower pressing block (5) is formed with a first sealing groove on the circumferential side wall, and an O-shaped sealing ring (8) is embedded in the first sealing groove.

5. The cloth bottom mounting structure according to claim 1, characterized by: The upper surface of the base (1) is fixedly provided with a support block (101) corresponding to the filter cloth tensioning mechanism, and the support block (101) is in contact or gap fit with the lower end surface of the lower pressing block (5).

6. The cloth bottom mounting structure according to claim 5, characterized by: The support block (101) is welded to the base (1).

7. The cloth bottom mounting structure according to any one of claims 1 to 6, characterized by: The filter bracket (2) comprises a filter support plate (201) provided with a plurality of filter holes and a supporting ring (202) fixed to the outer periphery of the filter support plate (201), the lower pressing block (5) is fixed to the filter support plate (201), and the outer periphery of the filter cloth (3) is fixed to the supporting ring (202), and the supporting ring (202) is detachably arranged on the base (1).

8. The cloth bottom mounting structure according to claim 7, characterized by: The filter support plate (201) is integrally formed with the lower pressing block (5).

9. The cloth bottom mounting structure of claim 7, wherein: The supporting ring (202) is provided with a pressing ring (7), the outer periphery of the filter cloth (3) is clamped between the pressing ring (7) and the supporting ring (202), and the pressing ring (7) and the supporting ring (202) are connected by a threaded fastening structure.

Images