Filter cartridge anti-deformation device

Abstract

This invention discloses a filter element anti-deformation device, comprising a connecting positioning component and multiple sets of support mechanisms, which are coaxially spaced on the connecting positioning component. Each support mechanism includes a fixing ring and multiple sets of arc-shaped support members. The fixing ring is mounted on the connecting positioning component, and each arc-shaped support member includes a radial fixing rod, an adjusting rod, and an arc-shaped support. The inner end of the radial fixing rod is fixedly connected to the outer periphery of the fixing ring, and the outer end of the radial fixing rod is movably connected to the adjusting rod. The outer end of the adjusting rod is fitted with the arc-shaped support. The adjusting rod includes a connecting sleeve that mates with the outer periphery of the fixing rod, and a buffer damper disposed within the connecting sleeve. The adjusting rod can move the arc-shaped support inward or outward to adjust the size of the support mechanism and the supporting force on the filter element. This invention not only improves the structural strength of the filter element but also has anti-vibration and energy-absorbing properties, effectively solving the damage and safety hazards caused by deformation and vibration.

Description

Technical Field

[0001] This invention belongs to the field of gas auxiliary equipment and relates to the improvement of filter support structure and vibration resistance, specifically a filter element anti-deformation device. Background Technology

[0002] Structurally, filters typically consist of components such as a housing, filter screen, and filter element. Classified by the nature of the medium used, filters can be broadly categorized into gas filters and liquid filters. Gas filters are a type of gas filter, usually installed upstream of the pressure regulator in natural gas pipelines to remove impurities from the gas, improve gas quality, and protect the safety of the equipment.

[0003] Urban natural gas consumption is high daily, concentrated in certain time periods, and the gas source is far from the user, with users scattered throughout the city. Therefore, multiple gas pressurization stations are typically used to maintain high transmission and supply pressures to meet demand. As impurities and viscous substances adhere and accumulate on the filter element of the gas filter, the airflow channel narrows, resistance increases, and the required natural gas supply flow cannot be met.

[0004] Therefore, regular maintenance, such as replacement, is required for the gas filter. Replacement involves first opening the top cover, which is sealed with multiple bolts on the housing, and then requiring two workers to lift it out. Due to the limited space inside the housing, and the accumulation of impurities on the filter element after a period of use, the weight of a single filter element segment increases significantly, typically more than three times its original weight, further complicating manual operation.

[0005] In response to the aforementioned problems in use, the applicant developed a "replaceable split-type filter element" in a previous patent (authorization announcement number CN217549348U). By splitting the filter element and setting up a lifting connection component, the problem of inconvenient filter element maintenance and difficult removal and placement is effectively solved without affecting the gas filtration efficiency or increasing airflow resistance.

[0006] However, gas filters are limited by their own structure and the need for lightweight design, resulting in limited strength in their supporting structure, and maintenance and cleaning also require a certain interval. After a period of use, when the filter element becomes clogged with impurities, the airflow at the front end is obstructed and cannot flow into the interior, while the airflow at the rear end is quickly drawn in, creating negative pressure inside and causing the filter element to deform and flatten. This poses a safety hazard to the gas pressurization station and related pipelines, valve groups, pumps, and other components. Furthermore, the deformed and damaged filter element cannot be repaired or recycled, and can only be discarded as waste, increasing the operating costs of the gas pipeline network.

[0007] Furthermore, since it is unavoidable for the filter element to be clogged by impurities, and the location of the clogging cannot be controlled, the filter element and filter housing will vibrate and make abnormal noises under the impact of the airflow at the front and rear ends and the internal turbulence. Although irregular low-frequency vibration is beneficial to prevent impurities from adhering and accumulating, it can also cause great damage to the gas filter and gas pressurization station when the amplitude is too large or there is resonance. Summary of the Invention

[0008] The purpose of this invention is to provide a filter element anti-deformation device to solve the problems of poor structural strength, easy deformation, and safety hazards caused by airflow vibration after clogging of existing filter elements.

[0009] To achieve the objectives of this invention, the following technical solution is adopted:

[0010] A filter element anti-deformation device includes a connecting positioning component and multiple sets of support mechanisms, which are coaxially spaced on the connecting positioning component. Each support mechanism includes a fixing ring and multiple sets of arc-shaped support members. The fixing ring is mounted on the connecting positioning component. Each arc-shaped support member includes a radial fixing rod, an adjusting rod, and an arc-shaped support. The inner end of the radial fixing rod is fixedly connected to the outer circumference of the fixing ring, and the outer end of the radial fixing rod is movably connected to the adjusting rod. The outer end of the adjusting rod is fitted with the arc-shaped support. The adjusting rod includes a connecting sleeve that mates with the outer circumference of the fixing rod, and a buffer damper disposed within the connecting sleeve. The adjusting rod can move the arc-shaped support inward or outward to adjust the size of the support mechanism and the supporting force on the filter element.

[0011] To further achieve the objectives of this invention, the following technical solutions may also be adopted:

[0012] The filter element anti-deformation device described above includes a vertical column with positioning rings spaced apart on it. The positioning rings are connected to the column via a threaded structure, and the inner diameter of the fixing ring is smaller than the outer diameter of the positioning ring. The column has a fixing ring with internal threads above the support mechanism.

[0013] As described above, in the filter element anti-deformation device, one end of the connecting sleeve is connected to one end of the radial fixing rod via a threaded structure, the other end of the connecting sleeve is connected to one end of the radial connecting rod via a buffer damper, and the other end of the radial connecting rod is connected to the arc-shaped support.

[0014] The filter element anti-deformation device described above includes a short cylinder fixed to the inner wall of the connecting sleeve. One end of the short cylinder has an open annular countersunk hole on its side wall. A torsion spring is installed inside the annular countersunk hole. One end of the torsion spring is fixed to the bottom wall of the annular countersunk hole, and the other end of the torsion spring extends out of the short cylinder and is connected to a positioning hole opened at the end of the radial connecting rod.

[0015] The filter element anti-deformation device described above includes an arc-shaped tube with a connecting part installed in the middle of its outer wall. The connecting part has a positioning groove that mates with the end of the adjusting rod.

[0016] The anti-deformation device for the filter element described above has an arc length ranging from 150 to 300 cm.

[0017] The filter element anti-deformation device described above has 2 to 3 sets of support mechanisms, with a spacing of 30 to 50 cm between each set of support mechanisms.

[0018] The filter element anti-deformation device described above has 3 to 5 sets of arc-shaped support members on each of the support mechanisms. Each set of arc-shaped support members is arranged at the same interval angle with the fixed ring as the center.

[0019] The diameter of the support mechanism in the above-mentioned filter element anti-deformation device ranges from 300 to 500 cm.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. This invention enhances the structural strength of the inner side of the filter element. The support mechanism is fitted to the inner ring of the filter element in shape. The upper and lower multi-layer support mechanism and multiple arc-shaped supports are set in each support mechanism. Therefore, it can cover the entire 360° range of the inner ring of the filter element, avoid weak links, and solve the unpredictability of the clogging location and safety hazards.

[0022] 2. The adjusting rod allows the arc-shaped support to move inward or outward, enabling the support mechanism to be adapted to the specifications of the filter element's inner ring, thereby expanding the scope of application of this invention. Simultaneously, the adjustable support mechanism facilitates installation on the filter element's inner ring and adjustment of the supporting force.

[0023] 3. Each support mechanism is equipped with multiple arc-shaped supports, which are arranged at equal intervals around the fixed ring. Therefore, each arc-shaped support is relatively independent and its position can be adjusted individually, with gaps between adjacent arc-shaped supports. When the gas filter or filter element experiences airflow impact, the independent arc-shaped supports can increase damping and absorb vibration, avoiding safety hazards caused by excessive amplitude or resonance of the filter element.

[0024] 4. To address the issues of uncontrollable airflow impact and vibration in the filter element, this invention incorporates a buffer damper within the adjusting rod. This buffer damper consists of a torsion spring installed within the annular countersunk hole of the short cylinder. This torsion spring serves as a connector between the arc-shaped support and the radial fixing rod. On one hand, when the filter element vibrates locally, the torsion spring's deformation space and elasticity absorb the impact energy without transmitting it to other parts of the filter element. On the other hand, the torsion spring generates torsional resistance in the circumferential direction, resolving the lateral impact and vibration problems within the filter plane. This reduces the impact caused by the uncontrollable area and angle of impact vibration. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 yes Figure 1 Top view;

[0028] Figure 3 yes Figure 1 A schematic diagram of the connecting positioning component described above;

[0029] Figure 4 yes Figure 2 A schematic diagram of the arc-shaped support described in the diagram;

[0030] Figure 5 yes Figure 2 A schematic diagram of the structure of the fixing ring, radial fixing rod and adjusting component described in the figure;

[0031] Figure 6 yes Figure 5 An enlarged structural diagram of the fixing ring and radial fixing rod described above;

[0032] Figure 7 yes Figure 6 A schematic diagram of the adjusting rod described in the figure;

[0033] Figure 8 yes Figure 7 Internal structure diagram;

[0034] Figure 9 yes Figure 7 Enlarged schematic diagram of part I in the middle;

[0035] Figure 10 This is a schematic diagram of another support mechanism of the present invention.

[0036] Reference numerals: 1-Connecting positioning component, 11-Column, 12-Fixing ring, 13-Bottom boss, 14-Upper boss, 2-Supporting mechanism, 3-Fixing ring, 4-Arc-shaped support component, 41-Radial fixing rod, 42-Adjusting rod, 421-Connecting sleeve, 422-Radial connecting rod, 43-Arc-shaped support, 44-Connecting part, 5-Buffer damper, 51-Short cylinder, 52-Annular countersunk hole, 53-Torsion spring. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0038] In the description of the embodiments of this invention, unless otherwise explicitly limited, terms such as setting, installing, and connecting should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0039] The applicant previously disclosed a "replaceable split-type filter element" in a patent (authorization announcement number CN217549348U), which divides the filter element, which is relatively tall in the prior art, into multiple filter element bodies, which effectively reduces the weight of a single filter element and facilitates manual operation and cleaning maintenance.

[0040] A positioning element is provided between adjacent filter element bodies. The positioning element includes an annular plate and a positioning short cylinder 51. The middle part of the positioning short cylinder 51 is fixed to the inner ring of the annular plate, and the positioning short cylinder 51 mates with the inner ring of the top cover ring. The positioning short cylinder 51 is located below the annular plate and is placed inside the top ring cover of the lower filter element body. The positioning short cylinder 51 and the top ring cover are in close contact.

[0041] During use, it was found that existing gas filters, when clogged with impurities, would deform and become damaged due to negative pressure, resulting in vibration and abnormal noise, which would affect the operation and safety of the gas system.

[0042] Based on this, such as Figures 1-10 As shown in the figure, this embodiment proposes a filter element anti-deformation device. For ease of understanding and consistency of technical terminology, the terms "filter element" and "filter element body" in this embodiment have the same meaning unless otherwise specified.

[0043] The anti-deformation device includes a connecting positioning component 1 and multiple sets of support mechanisms 2, which are coaxially spaced on the connecting positioning component 1. The connecting positioning component 1 serves to install and position the multiple sets of support mechanisms 2 axially within the inner ring of the filter element body. It controls the distance between adjacent support mechanisms 2 to ensure the overall strength of the filter element body. The support mechanisms 2 provide a reinforcing frame to the inner side of the filter element body and achieve full circumferential coverage, thus addressing the issues of clogging and uncontrollable vibration areas.

[0044] In this embodiment, the support mechanism 2 is fitted and supported to fit the inner ring of the filter element. The upper and lower multi-layer support mechanisms 2 and each support mechanism 2 are provided with multiple arc-shaped supports 43. Therefore, it can cover the entire structural range of the inner ring of the filter element, avoid weak links, and solve the hidden dangers of deformation and vibration caused by blockage.

[0045] See Figure 3 As shown, in this embodiment, the connecting positioning component 1 is a circular cylinder 11, with positioning rings installed at intervals on the cylinder 11. The positioning rings are connected to the cylinder 11 via a threaded structure. The inner diameter of the fixing ring 3 is smaller than the outer diameter of the positioning ring. A fixing ring 12 with internal threads is provided above the support mechanism 2 on the cylinder 11. The positioning rings cooperate with each support mechanism 2 to achieve the positioning of the support mechanism 2. The top support mechanism 2 is pressed and fixed by the fixing ring 12.

[0046] When there are two sets of support mechanisms 2, the cooperation between support mechanism 2 and connecting positioning part 1 is relatively simple. The lower support mechanism 2 can be supported by the bottom boss 13 at the lower end of column 11, and the upper support mechanism 2 can be installed by setting the upper boss 14 on the upper part of column 11.

[0047] like Figures 2-6 As shown, each support mechanism 2 in this embodiment consists of a central fixing ring 3 and multiple sets of arc-shaped support members 4 respectively installed on the outer side of the fixing ring 3. The fixing ring 3 is fitted onto the connecting positioning member 1.

[0048] Each set of arc-shaped support components 4 consists of a radial fixing rod 41, an adjusting rod 42, and an arc-shaped support 43.

[0049] The inner end of the radial fixing rod 41 is fixedly connected to the outer periphery of the fixing ring 3, which is fixed by welding in this embodiment. The outer end of the radial fixing rod 41 is movably connected to the adjusting rod 42, that is, the adjusting rod 42 can be moved and adjusted on the fixing rod to drive the arc-shaped support 43 to move inward or outward, thereby changing the size of the support mechanism 2. Figure 2 As shown, the dashed lines indicate that after the adjusting rod 42 moves outward along the radial fixing rod 41, the structure and volume of the support mechanism 2 are significantly expanded, thus allowing it to accommodate larger filter cartridges. Simultaneously, when using the same filter cartridge, the adjusting rod 42 can also increase the external support force.

[0050] like Figure 4 As shown, an arc-shaped support 43 is installed at the outer end of the adjusting rod 42. The arc-shaped support 43 consists of an arc-shaped tube and a connecting part 44. The connecting part 44 is located at the middle of the arch of the arc-shaped tube and is fixed by welding or other methods. Multiple arc-shaped tubes can be connected end to end to form a ring, or each arc-shaped tube can be a bend of unequal length, or a shorter bend can be used to reduce the weight of the device.

[0051] The connecting part 44 has a positioning groove in the middle, which facilitates connection, installation or disassembly with the end of the adjusting rod 42.

[0052] To balance strength and weight requirements, the arc length of the curved tube in this embodiment is preferably in the range of 150 to 300 cm. The diameter of the support mechanism 2 is in the range of 300 to 500 cm.

[0053] The adjusting rod 42 includes a connecting sleeve 421 that mates with the outer periphery of the fixed rod and a buffer damper 5 disposed in the connecting sleeve 421; the adjusting rod 42 can drive the arc-shaped support 43 to move inward or outward to adjust the size of the support mechanism 2 and the supporting force on the filter element.

[0054] In this embodiment, the spacing between adjacent support mechanisms 2 is preferably set between 30 and 50 cm. Simultaneously, each support mechanism 2 is equipped with 3 to 5 sets of arc-shaped support members 4, and each set of arc-shaped support members 4 is arranged at the same interval angle with the fixing ring 3 as the center.

[0055] like Figure 2 As shown, in this embodiment, three sets of arc-shaped support members 4 are preferably used.

[0056] like Figure 10 As shown, if the filter element diameter is large, it can also be set as 5 sets of arc-shaped support components 4.

[0057] Each arc-shaped support 4 is relatively independent and its position can be adjusted individually. When airflow impact occurs in the gas filter or filter element, the independent arc-shaped support 43 supports the filter element, which can absorb vibration and increase damping effect, avoiding safety hazards caused by excessive amplitude or resonance of the filter element.

[0058] like Figures 7-9 As shown, in this embodiment, one end of the connecting sleeve 421 is connected to one end of the radial fixing rod 41 by a threaded structure, and the other end of the connecting sleeve 421 is connected to one end of the radial connecting rod 422 by a buffer damper 5. The other end of the radial connecting rod 422 is connected to the arc-shaped support 43.

[0059] The buffer damper 5 includes a short cylinder 51 fixed on the inner wall of the connecting sleeve 421. One end of the short cylinder 51 has an open annular countersunk hole 52 on its side wall. A torsion spring 53 is installed in the annular countersunk hole 52. One end of the torsion spring 53 is fixed to the bottom wall of the annular countersunk hole 52, and the other end of the torsion spring 53 extends out of the short cylinder 51 and is connected to a positioning hole opened at the end of the radial connecting rod 422.

[0060] The torsion spring 53 serves as a connector between the arc-shaped support 43 and the radial fixing rod 41. On the one hand, when the filter element vibrates locally, the deformation space and elasticity of the torsion spring 53 can absorb the impact energy without transmitting it to other parts of the filter element. On the other hand, the torsion spring 53 can generate torsional resistance in the circumferential direction, which can solve the problem of lateral impact and vibration in the plane. This reduces the impact caused by the uncontrollable area and angle of impact vibration.

[0061] Furthermore, the support mechanism 2 used in this embodiment can be adjusted in size according to the specifications of the filter element, thus expanding its application range; at the same time, it can provide better elastic space for filter element deformation in the radial direction, which has a better anti-vibration effect and greatly improves the convenience of filter element installation and maintenance.

[0062] All technical contents not described in detail in this invention are publicly known technologies.

Claims

1. A filter element anti-deformation device, characterized in that, The anti-deformation device includes a connecting positioning component and multiple sets of support mechanisms, which are coaxially spaced on the connecting positioning component. Each support mechanism includes a fixing ring and multiple sets of arc-shaped support components. The fixing ring is mounted on the connecting positioning component. Each arc-shaped support component includes a radial fixing rod, an adjusting rod, and an arc-shaped support. The inner end of the radial fixing rod is fixedly connected to the outer circumference of the fixing ring, and the outer end of the radial fixing rod is movably connected to the adjusting rod. The outer end of the adjusting rod is fitted with the arc-shaped support. The adjusting rod includes a connecting sleeve that mates with the outer circumference of the fixing rod and a buffer damper disposed within the connecting sleeve. The adjusting rod can move the arc-shaped support inwards or outwards to adjust the size of the support mechanism and the supporting force on the filter element. The connecting sleeve... One end of the connecting sleeve is connected to one end of the radial fixed rod via a threaded structure, and the other end of the connecting sleeve is connected to one end of the radial connecting rod via a buffer damper. The other end of the radial connecting rod is connected to an arc-shaped support. The buffer damper includes a short cylinder fixed to the inner wall of the connecting sleeve. One end of the short cylinder has an open annular countersunk hole on its side wall. A torsion spring is installed in the annular countersunk hole. One end of the torsion spring is fixed to the bottom wall of the annular countersunk hole, and the other end of the torsion spring extends out of the short cylinder and is connected to a positioning hole at the end of the radial connecting rod. The connecting positioning component includes a vertical column. Positioning rings are installed at intervals on the column. The positioning rings are connected to the column via a threaded structure. The inner diameter of the fixing ring is smaller than the outer diameter of the positioning ring. The column has a fixing ring with internal threads above the support mechanism.

2. The filter element anti-deformation device according to claim 1, characterized in that, The arc-shaped support includes an arc-shaped tube, with a connecting part installed in the middle of the outer wall of the arc-shaped tube. The connecting part has a positioning groove that mates with the end of the adjusting rod.

3. The filter element anti-deformation device according to claim 2, characterized in that, The arc length of the arc-shaped tube ranges from 150 to 300 cm.

4. The filter element anti-deformation device according to claim 1, characterized in that, The support mechanism is provided in 2-3 sets, with a spacing of 30-50cm between each set.

5. The filter element anti-deformation device according to claim 1, characterized in that, Each of the aforementioned support mechanisms is provided with 3-5 sets of arc-shaped support members, and each set of arc-shaped support members is arranged at the same interval angle with the fixed ring as the center.

6. The filter element anti-deformation device according to claim 1, characterized in that, The diameter of the support mechanism ranges from 300 to 500 cm.

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