A precision filter that is easy to assemble

Abstract

The utility model discloses a precision filter convenient to assemble, including cylinder, top cap and a plurality of filter core, a plurality of filter core vertical setting in the inside of cylinder, filter core one end is provided with the water outlet, the inside bottom end horizontal fixed of cylinder has the baffle, the baffle upper surface is fixed with the support for supporting a plurality of filter core, in the utility model, be provided with special support, can provide stable, accurate primary positioning for filter core when installing, effectively avoided filter core in the cylinder inside toppling or misplacement. On this basis, the quick installation assembly of innovative design replaces the traditional hoop fixed, so that the top cap can be safely, rapidly locked in the cylinder top end, at the same time, the pressing plate integrated in the top cap below synchronous action with the installation process, to the filter core group that has been primarily positioned even, reliable axial pressure force is added, ensure that the sealing end surface of all filter core reaches the best sealing state simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of precision filter technology, and in particular to a precision filter that is easy to assemble. Background Technology

[0002] Precision filters, also known as security filters, are critical end-point protection devices in industrial water treatment, material separation, and food and pharmaceutical production processes. They are typically installed before membrane treatment systems such as reverse osmosis and ultrafiltration. Their core function is to trap micron- and submicron-sized suspended particles, colloids, microorganisms, and other impurities in the water, ensuring the safety of the feed water for subsequent precision equipment and preventing membrane elements from being scratched or contaminated.

[0003] Most precision filters on the market today adopt the classic "canister-top cover-filter element" structure. The assembly process typically involves the operator placing multiple filter elements one by one into the canister, using the sealing ring at the bottom of the filter element and the water inlet at the bottom of the canister for rough positioning. Then, the top cover is placed on top and finally secured with clamps. The water inlet method is usually a simple side-mounted single-point inlet, where water flows directly into the canister from an inlet on the side wall, forming a vortex within the canister before naturally distributing to each filter element.

[0004] Therefore, existing precision filters have the following drawbacks: First, in terms of assembly and maintenance, the filter element is first fixed to the central rod inside the cylinder via a cover plate, using the cover plate to press the filter element tight, and then the cylinder cover is fixed with a ring clamp. During the fixing process, the clamp needs to be repeatedly tapped to ensure a tight seal, making the entire assembly process not simple or quick, and also affecting subsequent filter element replacement. Second, in terms of water flow distribution, simple lateral water inlet leads to extremely uneven water flow distribution inside the cylinder. Most of the water flow directly impacts a few filter elements near the inlet, while filter elements farther from the inlet do not receive sufficient water flow. This "water flow short-circuit" phenomenon causes some filter elements to clog prematurely and become overloaded, while the filtration capacity of other filter elements is not fully utilized. More seriously, uneven water flow distribution creates hydraulic dead zones inside the cylinder. These areas have slow or even stagnant flow rates, making them highly susceptible to microbial growth and the formation of biological slime, becoming a secondary source of pollution for the system. Therefore, further improvements are needed. To this end, we propose a precision filter that is easy to assemble. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a precision filter that is easy to assemble.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a precision filter that is easy to assemble, comprising a cylinder, a top cover, and multiple filter elements, wherein the multiple filter elements are vertically arranged inside the cylinder, and each filter element has a water outlet at one end. A partition is horizontally fixed at the bottom of the cylinder, and a bracket for supporting the multiple filter elements is fixed on the upper surface of the partition. A water distribution assembly is fixed at the top of the cylinder and outside the multiple filter elements. A drain pipe is fixed on the side wall of the cylinder and below the partition. An annular side plate is fixed at the top of the cylinder. Multiple sets of mounting assemblies are sleeved on the side surfaces of the top cover and the side plate. A pressure rod is fixed on the lower surface of the top cover, and a pressure plate is fixed at the bottom end of the pressure rod. The lower surface of the pressure plate is in contact with the top of the filter element.

[0007] Furthermore, the partition plate has multiple perforations for the bottom outlet of the filter element.

[0008] Furthermore, the water distribution assembly includes a ring pipe fixed inside the cylinder, with a plurality of drain outlets evenly spaced on the inner sidewall of the ring pipe, and a water inlet pipe fixed on one side of the ring pipe, the other end of which extends through the sidewall of the cylinder to the outside of the cylinder.

[0009] Furthermore, the bracket includes a vertical rod fixed to the middle of the upper surface of the partition, a disc fixed to the top of the vertical rod, and multiple positioning holes for inserting the filter element on the side of the disc.

[0010] Furthermore, the mounting assembly includes a U-shaped plate that snaps onto the side panel and the side of the top cover, with a butterfly bolt threaded through the top of the U-shaped plate and rotatedly connected by a thread.

[0011] Furthermore, an annular groove is formed on the upper surface of the side plate, and a sealing ring is engaged inside the annular groove.

[0012] Furthermore, a pressure gauge is fixedly installed in the middle of the top cover.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model, by incorporating a dedicated bracket inside the cylinder, provides stable and precise initial positioning for the filter element during installation, effectively preventing the filter element from tipping over or shifting within the cylinder. Furthermore, an innovatively designed quick-installation assembly replaces the traditional clamp fixation, allowing the top cover to be securely and quickly locked onto the top of the cylinder. Simultaneously, a pressure plate integrated beneath the top cover moves synchronously during installation, applying uniform and reliable axial clamping force to the pre-positioned filter element assembly, ensuring that the sealing surfaces of all filter elements simultaneously achieve optimal sealing. This series of coordinated designs not only enables rapid assembly of the entire device but also makes filter element replacement during subsequent maintenance exceptionally simple, time-saving, and labor-saving, significantly reducing maintenance workload and time costs.

[0015] 2. When this utility model is in use, a water distributor is set up. After the sewage enters the ring pipe from the inlet pipe, it can be discharged from multiple drain outlets. The water is evenly distributed to each filter element through the water distributor, which avoids the accumulation of impurities in the water in a single position on the surface of the filter element, achieving no residue and no dead corners, and fundamentally eliminating the risk of secondary biological pollution. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is an overall sectional view of the present invention;

[0018] Figure 2 This is a partial perspective sectional view of the present invention;

[0019] Figure 3 For the present utility model Figure 1 Enlarged view of point A in the middle.

[0020] The attached figures are labeled as follows:

[0021] 1. Cylinder; 2. Partition plate; 21. Perforation; 3. Filter element; 31. Outlet; 4. Bracket; 41. Vertical rod; 42. Disc; 43. Positioning hole; 5. Water distribution assembly; 51. Ring pipe; 52. Drain outlet; 53. Inlet pipe; 6. Drain pipe; 7. Top cover; 8. Side plate; 9. Mounting assembly; 91. U-shaped plate; 92. Butterfly bolt; 10. Sealing ring; 11. Pressure gauge; 12. Pressure rod; 13. Pressure plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-3As shown, a precision filter that is easy to assemble is disclosed, comprising a cylinder 1, a top cover 7, and multiple filter elements 3. The multiple filter elements 3 are vertically arranged inside the cylinder 1, and each filter element 3 has an outlet 31 at one end. A partition 2 is horizontally fixed at the bottom inside the cylinder 1. A bracket 4 for supporting the multiple filter elements 3 is fixed on the upper surface of the partition 2. A water distribution assembly 5 is fixed at the top inside the cylinder 1 and outside the multiple filter elements 3. A drain pipe 6 is fixed on the side wall of the cylinder 1 and below the partition 2. An annular side plate 8 is fixed at the top of the cylinder 1. Multiple sets of mounting assemblies 9 are fitted together on the side surfaces of the top cover 7 and the side plate 8. A pressure rod 12 is fixed on the lower surface of the top cover 7, and a pressure plate 13 is fixed at the bottom end of the pressure rod 12. The lower surface of the pressure plate 13 is in contact with the top of the filter element 3.

[0024] The partition plate 2 has multiple perforations 21 for the bottom outlet 31 of the filter element 3 to pass through. The bottom of the filter element 3 and the perforations 21 are sealed with a sealing strip.

[0025] The water distribution assembly 5 includes a ring pipe 51 fixed inside the cylinder 1. Several drain ports 52 are opened at equal intervals on the inner side wall of the ring pipe 51, and a water inlet pipe 53 is fixed on one side of the ring pipe 51. The other end of the water inlet pipe 53 extends through the side wall of the cylinder 1 to the outside of the cylinder 1.

[0026] After the sewage enters the ring pipe 51 from the inlet pipe 53, it is evenly discharged from multiple drain ports 52 on the side wall of the ring pipe 51, avoiding the sewage from impacting the same position on the surface of a single filter element 3.

[0027] The bracket 4 includes a vertical rod 41 fixed to the middle of the upper surface of the partition 2, a disc 42 fixed to the top of the vertical rod 41, and a plurality of positioning holes 43 for inserting the filter element 3 on the side of the disc 42.

[0028] When assembling the filter element 3, first insert the filter element 3 into the cylinder 1 so that the filter element 3 passes through the positioning hole 43 on the side of the disc 42 and the water outlet 31 at the bottom of the filter element 3 passes through the perforation 21. The filter element 3 is initially positioned by the bracket 4.

[0029] Mounting assembly 9 includes a U-shaped plate 91 that snaps onto the sides of the side plate 8 and the top cover 7, with a butterfly bolt 92 threaded through the top of the U-shaped plate 91 and rotatedly connected by a thread.

[0030] After the filter element 3 is installed inside the cylinder 1, the top cover 7 is placed on top of the cylinder 1, and the side of the top cover 7 is aligned with the side of the side plate 8. Then, multiple sets of U-shaped plates 91 of the installation components 9 are snapped onto the side of the side plate 8 and the top cover 7. Finally, the butterfly bolts 92 on each U-shaped plate 91 are tightened. The butterfly bolts 92 are used to press the top cover 7 to fix the top cover 7. The pressure plate 13 on the lower surface of the top cover 7 will further press and fix the filter element 3.

[0031] An annular groove is formed on the upper surface of the side plate 8, and a sealing ring 10 is engaged inside the annular groove. The sealing ring 10 can increase the sealing between the top cover 7 and the cylinder 1.

[0032] A pressure gauge 11 is fixedly installed in the middle of the top cover 7. The pressure gauge 11 is a mechanical pressure gauge of the same technology as existing ones, which can be used to detect the water pressure inside the cylinder 1.

[0033] Working principle: During assembly, multiple filter elements 3 are vertically inserted into the cylinder 1 sequentially from the top, ensuring that each filter element 3 passes through the positioning hole 43 on the disc 42 in the bracket 4, and that the outlet 31 at the bottom of the filter element 3 is aligned and passes through the perforation 21 on the partition 2. During this process, the bracket 4 and the perforation 21 together achieve initial positioning of the filter element 3, and the bottom end of the filter element 3 is sealed to the partition 2 through a sealing strip. After the initial positioning is completed, the top cover 7 is put on, aligning its edge with the edge of the annular side plate 8 fixed to the top of the cylinder 1, while ensuring that the pressure rod 12 and pressure plate 13 below the top cover 7 are aligned with the top of the filter element 3. Next, the U-shaped plates 91 of the multiple sets of mounting components 9 are clamped at the side joint of the side plate 8 and the top cover 7. Then, the butterfly bolts 92 on the U-shaped plates 91 are tightened one by one. When the butterfly bolts 92 are screwed down, they exert downward pressure on the top cover 7, thereby firmly pressing the top cover 7 against the top of the cylinder 1. The sealing rings 10 in the annular groove on the side plate 8 are compressed to enhance the sealing performance. At the same time, the downward pressure of the top cover 7 is transmitted to the pressure plate 13 through the pressure rod 12. The pressure plate 13 evenly presses down on the top of all the filter elements 3, completing the final axial fixation and sealing of the filter element 3 group, and realizing fast and reliable assembly.

[0034] During equipment operation, the wastewater to be treated enters the ring pipe 51 through the inlet pipe 53 of the water distribution assembly 5. The water flow is distributed circumferentially within the ring pipe 51, and then evenly and radially sprayed onto the outer space of all filter elements 3 through multiple drain ports 52 evenly distributed on the inner side wall of the ring pipe 51. This achieves a balanced distribution of water among the multiple filter elements 3, avoiding premature local clogging of the filter element 3 due to water impact on a single location, and eliminating hydraulic dead zones within the cylinder 1. Under pressure, the wastewater penetrates the filter layer of the filter element 3 from the outside to the inside. The purified water enters the internal cavity of the filter element 3, flows out through the outlet 31 at the bottom, collects in the clean water chamber below the baffle 2, and is finally discharged through the drain pipe 6. The pressure gauge 11 fixed on the top cover 7 is used to monitor the working pressure inside the cylinder 1 in real time, providing a basis for judging the clogging status of the filter element 3 and initiating maintenance. When it is necessary to replace filter element 3, simply loosen all butterfly bolts 92, remove the U-shaped plate 91 and top cover 7, and then lift the old filter element 3 assembly upwards as a whole. Repeat the above installation steps in reverse to complete the replacement. Maintenance is extremely simple.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A precision filter that is easy to assemble, comprising a cylindrical body (1), a top cover (7), and a plurality of filter elements (3), wherein the plurality of filter elements (3) are vertically arranged inside the cylindrical body (1), and one end of each filter element (3) is provided with a water outlet (31), characterized in that: A partition plate (2) is horizontally fixed at the bottom of the inner cavity (1). A bracket (4) for supporting multiple filter elements (3) is fixed on the upper surface of the partition plate (2). A water distribution assembly (5) is fixed at the top of the inner cavity (1) and outside the multiple filter elements (3). A drain pipe (6) is fixed on the side wall of the cavity (1) and below the partition plate (2). An annular side plate (8) is fixed at the top of the cavity (1). Multiple sets of installation assemblies (9) are sleeved on the side surfaces of the top cover (7) and the side plate (8). A pressure rod (12) is fixed on the lower surface of the top cover (7), and a pressure plate (13) is fixed at the bottom of the pressure rod (12). The lower surface of the pressure plate (13) is in contact with the top of the filter element (3).

2. The precision filter that is easy to assemble according to claim 1, characterized in that: The partition (2) has multiple perforations (21) for passing through the bottom outlet (31) of the filter element (3).

3. The precision filter that is easy to assemble according to claim 1, characterized in that: The water distribution assembly (5) includes a ring pipe (51) fixed inside the cylinder (1). The inner side wall of the ring pipe (51) is provided with a plurality of drain outlets (52) at equal intervals. A water inlet pipe (53) is fixed on one side of the ring pipe (51). The other end of the water inlet pipe (53) extends through the side wall of the cylinder (1) to the outside of the cylinder (1).

4. A precision filter that is easy to assemble according to claim 1, characterized in that: The bracket (4) includes a vertical rod (41) fixed to the middle of the upper surface of the partition (2), and a disc (42) is fixed to the top of the vertical rod (41). The disc (42) has multiple positioning holes (43) on its side for inserting the filter element (3).

5. A precision filter that is easy to assemble according to claim 1, characterized in that: The mounting assembly (9) includes a U-shaped plate (91) that snaps onto the side of the side plate (8) and the top cover (7), with a butterfly bolt (92) threadedly connected to the top of the U-shaped plate (91).

6. A precision filter that is easy to assemble according to claim 1, characterized in that: The side plate (8) has an annular groove on its upper surface, and a sealing ring (10) is engaged inside the annular groove.

7. A precision filter that is easy to assemble according to claim 1, characterized in that: A pressure gauge (11) is fixedly installed in the middle of the top cover (7).

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