High-pressure filtering device convenient for checking and cleaning filter element

Abstract

The utility model discloses a high-pressure filtering device convenient for checking and cleaning a filter element, which comprises a barrel body and the filter element arranged in the barrel body, and a pressure relief end cover is arranged at one end of the barrel body. The pressure relief end cover is provided with the pressure relief valve cover assembly which is used for sealing the end of the filter element when the internal pressure of the filter element is normal and automatically relieving pressure when the internal pressure of the filter element is too large, and the pressure relief valve cover assembly is independently and detachably connected to the pressure relief end cover. The pressure relief valve cover assembly which can be independently and detachably connected to the pressure relief end covers is arranged, so that the pressure relief valve cover assembly can independently open or close the filter element, the bottom of the filter element can be conveniently and quickly opened, and the filter element can be directly checked and cleaned under the condition that the end covers at the two ends are not opened and the filter element is not detached; the maintenance efficiency of the high-pressure filter is effectively improved, the maintenance cost is reduced, and meanwhile, the high-pressure filter has the advantages of automatic pressure relief, simple structure, good filtering effect and the like.

Description

Technical Field

[0001] This utility model belongs to the field of high-pressure fluid filtration technology, and in particular relates to a high-pressure filtration device. Background Technology

[0002] In the existing high-pressure abrasive jet descaling process, a high-pressure pump provides pressurized water to the nozzle. However, due to the long-term operation of the high-pressure pump, the seals wear out, resulting in a small amount of impurities in the pressurized water flowing out of the high-pressure pump. This can easily cause blockage of the descaling nozzle. Therefore, a high-pressure filter needs to be installed between the high-pressure pump and the descaling nozzle.

[0003] Currently used high-pressure filters primarily employ cylindrical filter elements, filtering pressurized water from the inside out. To ensure the required filtration accuracy, a good seal must be maintained between the cylindrical filter element and the two end caps, ensuring that pressurized water can only flow through the filter element. In industrial production, vertically installed high-pressure filters typically place the filter element vertically, with water entering from the top and exiting from the side near the top. A pressure relief assembly is located at the lower end of the filter element. This assembly seals the filter element end when the internal pressure is normal, preventing water leakage. The pressure relief assembly includes a pressure relief valve plate and a pressure relief spring. When the internal pressure of the filter element becomes excessive, the pressure relief spring automatically compresses, opening the pressure relief valve plate and releasing the seal on the filter element end, thus achieving the pressure relief function. Although the pressure relief assembly can be repeatedly used under the action of the pressure relief spring, this design is not conducive to the inspection and cleaning of contaminants inside the filter element. Inspecting and cleaning the filter element inside a high-pressure filter requires opening the entire end cap, which is inconvenient and difficult to disassemble. This not only reduces the filter's effectiveness but also increases maintenance costs. Therefore, an automatic pressure relief high-pressure filter device is needed that can quickly inspect and clean the filter element without opening both end caps, thereby improving equipment maintenance efficiency and reducing maintenance costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the deficiencies and defects mentioned in the background art above, and to provide a high-pressure filtration device that is simple in structure, easy to maintain and disassemble, has a wide range of applications, can automatically depressurize, and is easy to inspect and clean the filter element.

[0005] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is as follows:

[0006] A high-pressure filtration device for easy inspection and cleaning of filter elements includes a cylinder and a filter element disposed within the cylinder. One end of the cylinder is provided with a pressure relief end cap. The pressure relief end cap is provided with a pressure relief valve cover assembly for sealing the end of the filter element when the internal pressure of the filter element is normal and for automatically relieving pressure when the internal pressure of the filter element is too high. The pressure relief valve cover assembly is independently and detachably connected to the pressure relief end cap.

[0007] In the aforementioned high-pressure filtration device, preferably, the pressure relief valve cover assembly includes a pressure relief valve cover and a pressure relief component for automatically releasing pressure when the internal pressure of the filter element is too high. The pressure relief valve cover is sealed to one end of the filter element via the pressure relief component. By providing the pressure relief component, the filter element can seal its end when the internal pressure is normal, ensuring that under normal operating conditions, pressurized water can only flow through the filter element and will not flow out from other parts. When the internal pressure of the filter element is too high, it can automatically release excess pressure, thereby protecting the filter element from damage caused by excessive pressure.

[0008] In the aforementioned high-pressure filtration device, preferably, the pressure relief component is a pressure relief plate that can rupture and release pressure when the internal pressure of the filter element is too high. The end of the pressure relief valve cover connected to the filter element has a groove, and the pressure relief plate is disposed within the groove. The groove positions and fixes the pressure relief plate. By placing the pressure relief plate in the groove and ensuring a tight connection between the pressure relief end cover and the pressure relief valve cover, the pressure relief plate and the end face of the filter element are pressed and sealed. When the internal pressure of the filter element is normal, it can operate normally, effectively filtering and discharging water. When the pressure difference between the inside and outside of the filter element becomes too large due to blockage, the pressure relief plate will automatically rupture and release the pressure, protecting the filter element from rupture due to excessive pressure difference. Furthermore, by checking the rupture condition of the pressure relief plate, it is possible to quickly and accurately determine whether the filter element needs disassembly, overhaul, or direct replacement, accurately predicting the degree of internal blockage. Restoration only requires replacing a new pressure relief plate placed in the groove, greatly improving the inspection and cleaning efficiency of the high-pressure filter element.

[0009] In the aforementioned high-pressure filtration device, preferably, the pressure relief valve cover includes a hollow groove located on the side of the pressure relief plate away from the filter element. The hollow groove has multiple pressure relief holes radially arranged on it. The inner wall of the pressure relief end cover has multiple pressure relief grooves. A water passage is provided between the filter element and the pressure relief end cover. The hollow groove, pressure relief holes, pressure relief grooves, and water passage are connected. With this arrangement, after the pressure relief plate breaks and opens, the pressurized water inside the filter element flows through the hollow groove of the pressure relief valve cover into the pressure relief holes, the hollow groove of the pressure relief end cover, and through the water passage to the outside of the filter element.

[0010] In the aforementioned high-pressure filtration device, preferably, the hollow groove includes a drain chamber for collecting deposited debris, and the drain chamber is located on the side of the pressure relief hole away from the filter element. With this configuration, after the pressure relief plate breaks and opens, the deposited debris inside the filter element will enter the drain chamber and accumulate. During inspection and cleaning, each time only the pressure relief valve cover needs to be opened, not only can impurities on the filter layer inside the filter element be directly cleaned, but the debris in the drain chamber can also be quickly discharged, accelerating the inspection and cleaning efficiency of the high-pressure filtration device.

[0011] In the aforementioned high-pressure filtration device, preferably, the pressure relief end cap and the pressure relief valve cover are connected by a threaded connection. This configuration not only facilitates quick disassembly and installation of the pressure relief valve cover, allowing it to be quickly removed from the pressure relief end cap, but also, through the tightening action of the threads, ensures that the pressure relief plate and the end face of the filter element are quickly pressed together for a seal. This simplifies maintenance and replacement operations and further improves work efficiency.

[0012] In the aforementioned high-pressure filtration device, preferably, a water outlet connector is provided on one side of the cylinder, and support rings for supporting the filter element are provided on both sides of the water outlet connector. The support rings are sleeved on the filter element and have several water passage holes. The support rings are located on both sides near the water outlet connector to prevent the filter element from deforming due to excessive pressure difference between the inner and outer sides near the water outlet. When the impurities remaining in the filter element increase and cause blockage, the impurities will be evenly distributed circumferentially from bottom to top along the inner wall of the filter element, preventing the filter element from bending and deforming due to uneven circumferential force caused by impurities blocking one side.

[0013] In the aforementioned high-pressure filtration device, preferably, the filter element includes a filter layer and a cylindrical exoskeleton. The filter layer is attached to the inner wall of the cylindrical exoskeleton and is composed of multiple layers of filter mesh. The cylindrical exoskeleton has multiple water-permeable holes. The cylindrical structure of the exoskeleton can withstand high pressure, ensuring that the filter element is not easily deformed or damaged under high-pressure working conditions. The filter layer, composed of multiple layers of filter mesh, can perform multi-level filtration of the flowing liquid, effectively intercepting impurities of different particle sizes, improving filtration accuracy, and ensuring the quality of the filtered pressurized water.

[0014] In the above-mentioned high-pressure filtration device, preferably, the other end of the cylinder is provided with a water inlet end cover, one side of the water inlet end cover is provided with a water inlet connector, the other side of the water inlet end cover is provided with a positioning groove, the upper end of the filter element is embedded in the positioning groove, and a high-pressure sealing ring is provided between the upper end face of the filter element and the water inlet end cover.

[0015] In the above-mentioned high-pressure filtration device, preferably, a high-pressure sealing ring is provided between the water inlet end cover, the pressure relief end cover and both ends of the cylinder, and the water inlet end cover and the pressure relief end cover are fixedly connected to both ends of the cylinder through flanges.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] This utility model features a pressure relief valve cover assembly that can be independently detached and connected to the pressure relief end cover. This allows the pressure relief valve cover assembly to open or close the filter element independently, facilitating quick opening of the bottom of the filter element. It also allows for direct inspection and cleaning of the filter element without opening the end covers or disassembling the filter element, effectively improving the efficiency of high-pressure filter maintenance and reducing maintenance costs. In addition, it has the advantages of automatic pressure relief, simple structure, good filtration effect, and wide applicability. Attached Figure Description

[0018] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the high-pressure filtration device in the embodiment;

[0020] Figure 2 for Figure 1 A cross-sectional view of the high-pressure filter device along the AA direction;

[0021] Figure 3 for Figure 1 A cross-sectional view of the high-pressure filter device along the BB direction;

[0022] Figure 4 This is a schematic diagram of the filter element of the high-pressure filtration device in the embodiment;

[0023] Figure 5 A cross-sectional view of the filter element of the high-pressure filtration device in the embodiment;

[0024] Figure 6 This is a schematic diagram of the pressure relief valve cover assembly of the high-pressure filtration device in the embodiment.

[0025] Figure 7 for Figure 6 A cross-sectional view of the pressure relief valve cover assembly along the CC direction.

[0026] Legend

[0027] 1. Cylinder body; 2. Filter element; 3. Pressure relief end cap; 4. Water inlet end cap; 5. Pressure relief valve cover; 6. Pressure relief plate; 7. Water passage; 11. Water outlet connector; 12. Support ring; 13. Water passage hole; 21. Filter layer; 22. Cylindrical exoskeleton; 23. Water permeable hole; 31. Pressure relief groove; 41. Water inlet connector; 42. Positioning groove; 51. Groove; 52. Hollow groove; 53. Pressure relief hole; 521. Sewage discharge chamber. Detailed Implementation

[0028] To facilitate understanding of this utility model, it will be described more comprehensively and in detail below with reference to the accompanying drawings and preferred embodiments. However, the scope of protection of this utility model is not limited to the following specific embodiments.

[0029] It should be noted that when a component is described as being "fixed to, attached to, connected to or connected to" another component, it can be directly fixed to, attached to, connected to or connected to the other component, or it can be indirectly fixed to, attached to, connected to or connected to the other component through other intermediate connectors.

[0030] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of protection of this invention.

[0031] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0032] Example:

[0033] As shown in the figure Figures 1 to 7 As shown, the high-pressure filter device for easy inspection and cleaning of the filter element in this embodiment is installed vertically, including a cylinder 1 and a filter element 2 disposed in the cylinder 1. A pressure relief end cap 3 is provided at one end of the cylinder 1. The pressure relief end cap 3 is provided with a pressure relief valve cover assembly for sealing the end of the filter element 2 when the internal pressure of the filter element 2 is normal and for automatically relieving pressure when the internal pressure of the filter element 2 is too high. The pressure relief valve cover assembly is independently detachable and connected to the pressure relief end cap 3.

[0034] In this embodiment, the pressure relief valve cover assembly includes a pressure relief valve cover 5 and a pressure relief component for automatically relieving pressure when the internal pressure of the filter element 2 is too high. The pressure relief valve cover 5 is sealed to one end of the filter element 2 through the pressure relief component.

[0035] In this embodiment, as Figure 1 , Figure 6 and Figure 7As shown, the pressure relief component is a pressure relief plate 6 that can rupture and relieve pressure when the internal pressure of the filter element 2 is too high. The end of the pressure relief valve cover 5 connected to the filter element 2 is provided with a groove 51, and the pressure relief plate 6 is disposed in the groove 51.

[0036] In this embodiment, the pressure relief valve cover 5 includes a hollow groove 52, which is located on the side of the pressure relief plate 6 away from the filter element 2. The hollow groove 52 has multiple pressure relief holes 53 radially opened. Multiple pressure relief grooves 31 are opened on the inner side wall of the pressure relief end cover 3. A water passage 7 is left between the filter element 2 and the pressure relief end cover 3. The hollow groove 52, pressure relief holes 53, pressure relief grooves 31 and water passage 7 are connected.

[0037] In this embodiment, as Figure 6 As shown, the hollow trough 52 includes a drain chamber 521 for collecting deposited debris, which is located on the side of the pressure relief hole 53 away from the filter element 2. After the pressure relief plate 6 breaks and opens, the deposited debris inside the filter element 2 will enter the drain chamber 521 and settle.

[0038] In this embodiment, the pressure relief end cap 3 and the pressure relief valve cover 5 are connected by a threaded connection. The lower end face of the pressure relief valve cover 5 is flush with the lower end face of the pressure relief end cap 3, and is provided with a hexagonal handle for easy unscrewing / tightening of the pressure relief valve cover 5.

[0039] In this embodiment, as Figures 1 to 3 As shown, a water outlet connector 11 is provided on one side of the cylinder 1. Support rings 12 for supporting the filter element 2 are provided on both sides of the water outlet connector 11. The support rings 12 are fitted onto the filter element 2 and have several water passage holes 13. Specifically, the water outlet connector 11 is located on the upper side of one side of the cylinder 1, and support rings 12 are provided on both sides near the water outlet connector 11. A support ring 12 is also provided below the filter element 2 to prevent the filter element 2 from bending and deforming due to uneven circumferential stress caused by impurities clogging its lower part.

[0040] In this embodiment, as Figure 4 and Figure 5 As shown, the filter element 2 includes a filter layer 21 and a cylindrical exoskeleton 22. The filter layer 21 is attached to the inner wall of the cylindrical exoskeleton 22. The filter layer 21 is composed of multiple layers of filter screens stacked together. The cylindrical exoskeleton 22 is provided with multiple water-permeable holes 23.

[0041] In this embodiment, a water inlet cap 4 is provided at the other end of the cylinder 1. A water inlet connector 41 is provided on one side of the water inlet cap 4, and a positioning groove 42 is provided on the other side of the water inlet cap 4. The upper end of the filter element 2 is embedded in the positioning groove 42, and a high-pressure sealing ring is provided between the upper end face of the filter element 2 and the water inlet cap 4. Specifically, the water inlet connector 41 is located at the axial position of the water inlet cap 4, and the water inlet connector 41 is connected to the inner side of the filter element 2 to facilitate the direct input of high-pressure water to be filtered. The positioning groove 42 is formed by a convex ring protruding towards the filter element 2. The end of the filter element 2 is inserted into the positioning groove 42 to ensure that the end face of the filter element 2 is sealed and the axis coincides with the end face of the water inlet cap 4. The positioning groove 42 can fix the end of the filter element 2 circumferentially, which facilitates the installation and positioning of the filter element 2 and the sealing connection of the axial end face.

[0042] In this embodiment, high-pressure sealing rings are respectively provided between the water inlet cap 4 and the pressure relief cap 3 and both ends of the cylinder 1. The water inlet cap 4 and the pressure relief cap 3 are fixedly connected to both ends of the cylinder 1 by flanges. Specifically, high-pressure sealing rings are provided at the connection between the water inlet cap 4 and the upper end face of the cylinder 1, and at the connection between the pressure relief cap 3 and the lower end face of the cylinder 1 to seal their end faces. The water inlet cap 4 and the upper end face of the cylinder 1, and the pressure relief cap 3 and the lower end face of the cylinder 1 are fixedly connected by flanges.

[0043] In this embodiment, the working principle is as follows: pressurized water flows into the filter element 2 from the inlet connector 41, is filtered by the filter layer 21, and then flows out through the water permeable holes 23 on the cylindrical exoskeleton 22 to achieve the filtration of pressurized water. The filtered water is finally output through the outlet connector 11 at the upper end of the cylinder 1. When the filter element 2 becomes more clogged, the internal and external pressure difference continues to increase. When the designed pressure difference is reached, the pressure relief plate 6 breaks and opens, and the pressurized water flowing into the filter element 2 is output through the hollow groove 52, the pressure relief groove 31, the pressure relief hole 53, and the water passage 7, thereby reducing the internal and external pressure difference of the filter element 2 and protecting the filter element 2.

[0044] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-pressure filtration device for easy inspection and cleaning of the filter element, comprising a cylindrical body (1) and a filter element (2) disposed within the cylindrical body (1), characterized in that, One end of the cylinder (1) is provided with a pressure relief end cap (3). The pressure relief end cap (3) is provided with a pressure relief valve cover assembly for sealing the end of the filter element (2) when the internal pressure of the filter element (2) is normal and for automatically relieving pressure when the internal pressure of the filter element (2) is too high. The pressure relief valve cover assembly is independently detachable and connected to the pressure relief end cap (3).

2. The high-pressure filtration device according to claim 1, wherein the pressure relief valve cover assembly includes a pressure relief valve cover (5) and a pressure relief component for automatically relieving pressure when the internal pressure of the filter element (2) is too high, wherein the pressure relief valve cover (5) is sealed to one end of the filter element (2) through the pressure relief component.

3. The high-pressure filtration device according to claim 2, characterized in that, The pressure relief component is a pressure relief plate (6) that can rupture and relieve pressure when the internal pressure of the filter element (2) is too high. The pressure relief valve cover (5) is provided with a groove (51) at one end connected to the filter element (2), and the pressure relief plate (6) is disposed in the groove (51).

4. The high-pressure filtration device according to claim 3, characterized in that, The pressure relief valve cover (5) includes a hollow groove (52), which is located on the side of the pressure relief plate (6) away from the filter element (2). The hollow groove (52) has multiple pressure relief holes (53) radially opened. The inner wall of the pressure relief end cover (3) has multiple pressure relief grooves (31). A water passage (7) is left between the filter element (2) and the pressure relief end cover (3). The hollow groove (52), pressure relief holes (53), pressure relief grooves (31) are connected to the water passage (7).

5. The high-pressure filtration device according to claim 4, characterized in that, The hollow trough (52) includes a drain chamber (521) for collecting deposited debris, the drain chamber (521) being located on the side of the pressure relief hole (53) away from the filter element (2).

6. The high-pressure filtration device according to claim 5, characterized in that, The pressure relief end cap (3) and the pressure relief valve cap (5) are connected by a threaded connection.

7. The high-pressure filtration device according to any one of claims 1-6, characterized in that, A water outlet connector (11) is provided on one side of the cylinder (1). Both sides of the water outlet connector (11) are provided with support rings (12) for supporting the filter element (2). The support rings (12) are sleeved on the filter element (2) and have several water passage holes (13).

8. The high-pressure filtration device according to any one of claims 1-6, characterized in that, The filter core (2) includes a filter layer (21) and a cylindrical exoskeleton (22). The filter layer (21) is attached to the inner wall of the cylindrical exoskeleton (22). The filter layer (21) is composed of multiple layers of filter screens. The cylindrical exoskeleton (22) is provided with multiple water-permeable holes (23).

9. The high-pressure filtration device according to any one of claims 1-6, characterized in that, The other end of the cylinder (1) is provided with a water inlet cap (4), one side of the water inlet cap (4) is provided with a water inlet connector (41), the other side of the water inlet cap (4) is provided with a positioning groove (42), the upper end of the filter element (2) is embedded in the positioning groove (42), and a high-pressure sealing ring is provided between the upper end face of the filter element (2) and the water inlet cap (4).

10. The high-pressure filtration device according to claim 9, characterized in that, High-pressure sealing rings are provided between the water inlet cap (4), the pressure relief cap (3) and both ends of the cylinder (1), and the water inlet cap (4) and the pressure relief cap (3) are fixedly connected to both ends of the cylinder (1) through flanges.

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