A filter element with replaceable inner core

Abstract

This utility model provides a filter element with a replaceable inner core, relating to the field of filter elements. It includes an outer shell, one end of which is provided with an end cap. An internal filter element is housed inside the outer shell, with a main locking component at one end and a secondary locking component at the other end. This utility model, through the cooperation between the main locking component and the main locking slot, and the secondary locking component and the secondary locking slot, can quickly complete the initial positioning of the inner core. Furthermore, with the use of arc-shaped inserts and arc-shaped slots between the end cap and the outer shell, the filter element can be quickly assembled and disassembled, shortening maintenance time and facilitating the replacement of the filter element, thus enabling the filter element to be reused. Through the synergistic effect of the air bladder strip, connecting channel, and embedded sealing bladder, after the end cap and outer shell are fully locked, rotating the turntable causes the embedded sealing bladder to expand and tightly seal the connection, effectively preventing liquid or gas leakage from the connection.

Description

Technical Field

[0001] This utility model relates to the field of filter elements, and more particularly to a filter element with a replaceable inner core. Background Technology

[0002] In modern industrial production and daily life, filter elements, as key components for the filtration and purification of liquids and gases, are widely used in water treatment, air purification, petrochemicals, automobile manufacturing, and many other fields. Their performance directly affects the filtration effect and the normal operation of equipment; therefore, the design and development of filter elements has always been a key research focus in related fields.

[0003] Currently, most filter cartridges on the market have a fixed assembly structure. The connection and assembly of the inner core and outer shell of traditional filter cartridges is also relatively complex, usually using bolts or adhesive bonding. When replacing the inner core or performing equipment maintenance, disassembly requires multiple tools, which is cumbersome and time-consuming. This not only increases maintenance costs but also reduces equipment efficiency. Frequent disassembly can also easily damage filter cartridge components and shorten the lifespan of the filter cartridge. On the other hand, the sealing structure of traditional filter cartridges is mostly static sealing, such as using rubber sealing rings. This sealing method is difficult to guarantee the sealing effect under more complex operating conditions, and is prone to liquid or gas leakage. Once leakage occurs, it will seriously affect the filtration performance of the filter cartridge, and may even cause the entire filtration system to fail, thereby affecting the normal operation of the production process or the safe and stable operation of the equipment.

[0004] Therefore, it is necessary to provide a new filter element with a replaceable inner core to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a filter element with a replaceable inner core.

[0006] This utility model provides a replaceable inner core filter element comprising: an outer shell, one end of which is provided with an end cap, an inner filter element inside the outer shell, one end of which is provided with a main locking member, and the other end of which is provided with a secondary locking member; a main locking slot is provided inside the end cap, and the main locking member is locked in the main locking slot; a secondary locking slot is provided on the inner wall of one end of the outer shell, and the secondary locking member is locked in the secondary locking slot; and a quick-locking mechanism comprising an outer convex ring, which is fixedly connected to the outer wall of the end cap; two symmetrically arranged arc-shaped side plates on the outer wall of one end of the outer shell, each of which is fixedly connected with an arc-shaped insert; two symmetrically arranged arc-shaped slots in the outer convex ring, each of which is slidably connected to the two arc-shaped inserts; side tubes symmetrically fixedly connected to the outer wall of the outer convex ring; locking grooves on the side walls of each of the two arc-shaped inserts; and locking components inside each of the two side tubes.

[0007] Preferably, the two side tubes are respectively aligned with the two arc-shaped slots, and the outer convex ring is symmetrically provided with two through holes. One end of the two through holes is connected to the side wall of the two arc-shaped slots, and the other end of the two side tubes is respectively aligned with the two through holes.

[0008] Preferably, the locking assembly includes a slide rod, which is slidably connected to the two end walls of the side tube, one end of the slide rod is provided with a locking head, and the side tube is provided with a spring inside.

[0009] Preferably, the slide bar is provided with a limiting piece, the limiting piece is located inside the side tube, one end of the spring is connected to the limiting piece, the other end of the spring is connected to the inner wall of the side tube, and the clamp is provided with a wedge-shaped head.

[0010] Preferably, the outer convex ring has two symmetrical hidden grooves inside, and the two hidden grooves are respectively aligned with two arc-shaped slots. The inner wall of the end cap has an annular embedded groove, and an embedded sealing bladder is installed and connected in the annular embedded groove. The two hidden grooves have airbag strips inside, and a connecting channel is provided between the two airbag strips and the embedded sealing bladder.

[0011] Preferably, a fixing rod is fixedly connected in the hidden groove, a push plate is slidably connected on the fixing rod, the push plate is located on one side of the airbag strip, a screw is rotatably connected in the hidden groove, a turntable is installed at one end of the screw, the push plate is provided with a threaded opening, and the push plate is threadedly connected to the screw.

[0012] Compared with related technologies, the replaceable inner core filter element provided by this utility model has the following beneficial effects:

[0013] 1. This utility model utilizes the cooperation of the main clamp and the main bayonet, and the auxiliary clamp and the auxiliary bayonet during the installation of the built-in filter element to quickly complete the initial positioning of the inner core in the outer shell. In addition, with the arc-shaped plug and arc-shaped slot between the end cap and the outer shell, when the arc-shaped plug is inserted into the arc-shaped slot, the wedge-shaped clamp of the slide rod is compressed by the spring. After it is in place, the spring returns to its original position, allowing the clamp to engage with the locking groove. This allows for the quick assembly and disassembly of the filter element, greatly shortening maintenance time and reducing maintenance costs. At the same time, it facilitates the replacement of the filter element, making the filter element reusable and effectively improving the efficiency of use.

[0014] 2. This utility model utilizes the synergistic effect of the airbag strip, connecting channel, and embedded sealing bladder. After the end cap is fully locked to the outer shell, rotating the turntable drives the screw to rotate, causing the push plate to push the airbag strip. The gas inside the airbag strip enters the embedded sealing bladder through the connecting channel, causing the embedded sealing bladder to expand and tightly seal the connection, effectively preventing liquid or gas leakage from the connection. Even under some complex working conditions, it can ensure the stable filtration effect of the filter element and avoid filtration failure caused by leakage, providing a reliable guarantee for the normal operation of the equipment and the filtration quality. Attached Figure Description

[0015] Figure 1 A schematic diagram of a preferred embodiment of this utility model;

[0016] Figure 2 for Figure 1 A cross-sectional structural schematic diagram of a preferred embodiment is shown;

[0017] Figure 3 for Figure 2 The diagram shows the structure at point A.

[0018] Figure 4 for Figure 3 The diagram shows the structure at point B.

[0019] The following are the labels in the diagram: 1. Outer shell; 2. End cap; 3. Internal filter element; 4. Main clamp; 41. Secondary clamp; 5. Outer convex ring; 51. Arc-shaped side plate; 52. Arc-shaped insert; 53. Side tube; 6. Slide rod; 61. Clamp; 62. Spring; 7. Embedded sealing bladder; 71. Air bladder strip; 72. Connecting channel; 8. Fixing rod; 81. Push plate; 82. Screw; 9. Turntable. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please refer to the following: Figures 1 to 4A replaceable inner core filter element includes: an outer shell 1, an end cap 2 at one end of the outer shell 1, an inner filter element 3 inside the outer shell 1, a main locking member 4 at one end of the inner filter element 3, a secondary locking member 41 at the other end of the inner filter element 3, a main locking slot inside the end cap 2, the main locking member 4 being engaged in the main locking slot, and a secondary locking slot on the inner wall of one end of the outer shell 1, the secondary locking member 41 being engaged in the secondary locking slot; and a quick-locking mechanism, including an outer protruding ring 5. The outer convex ring 5 is fixedly connected to the outer wall of the end cap 2. Two arc-shaped side plates 51 are symmetrically provided on the outer wall of one end of the outer cylinder shell 1. Arc-shaped plugs 52 are fixedly connected to the two arc-shaped side plates 51. Two arc-shaped slots are symmetrically provided in the outer convex ring 5. The two arc-shaped plugs 52 are slidably connected to the two arc-shaped slots respectively. Side tubes 53 are symmetrically fixedly connected to the outer wall of the outer convex ring 5. Locking grooves are provided on the side walls of the two arc-shaped plugs 52. Locking components are provided inside the two side tubes 53.

[0022] In the specific implementation process, such as Figure 2 and Figure 3 As shown, the two side tubes 53 are respectively aligned with the two arc-shaped slots. The outer convex ring 5 has two through holes symmetrically arranged. One end of the two through holes is connected to the side wall of the two arc-shaped slots, and the other end of the two side tubes 53 is respectively aligned with the other end of the two through holes.

[0023] It should be noted that: when the built-in filter element 3 is inserted into the outer shell 1, the main clamp 4 at one end of the built-in filter element 3 cooperates with the main clamp inside the end cap 2, and the auxiliary clamp 41 at the other end cooperates with the auxiliary clamp on the inner wall of one end of the outer shell 1, so as to quickly achieve the initial positioning and installation of the built-in filter element 3 in the outer shell 1.

[0024] Two arc-shaped inserts 52 on the outer wall of one end of the outer cylinder shell 1 are aligned with two arc-shaped slots in the outer convex ring 5 and inserted. During the insertion process, the internal structure of the two side tubes 53 allows the locking head 61 to automatically engage with the locking groove, thereby achieving a firm lock between the end cap 2 and the outer cylinder shell 1 and completing the quick assembly and disassembly of the filter element's overall structure.

[0025] refer to Figure 3 As shown, the locking assembly includes a slide rod 6, which is slidably connected to the two end walls of the side tube 53. One end of the slide rod 6 is provided with a clip 61, and the inside of the side tube 53 is provided with a spring 62.

[0026] It should be noted that when the arc-shaped insert 52 slides along the arc-shaped slot, the slide rod 6 slides inside the side tube 53. The locking head 61 at one end of the slide rod 6 is a wedge-shaped head. As the arc-shaped insert 52 slides, the wedge-shaped locking head 61 is squeezed, and the slide rod 6 slides into the side tube 53, compressing the spring 62.

[0027] Until the arc-shaped plug 52 is slid in until it is fully inserted, the locking head 61 aligns with the locking groove on the side wall of the arc-shaped plug 52. Under the restoring force of the spring 62, the slide rod 6 returns to its original position, and the locking head 61 is engaged in the locking groove, thereby achieving a secure lock between the end cap 2 and the outer shell 1.

[0028] refer to Figure 2 and Figure 3 As shown, the slide bar 6 is provided with a limiting piece, which is located inside the side tube 53. One end of the spring 62 is connected to the limiting piece, and the other end of the spring 62 is connected to the inner wall of the side tube 53. The clamp head 61 is a wedge-shaped head.

[0029] It should be noted that the limiting plate can effectively limit the movement distance of the slide bar 6, and at the same time, in conjunction with the spring 62, the slide bar 6 can be reset.

[0030] refer to Figure 3 and Figure 4 As shown, the inner side of the outer convex ring 5 is symmetrically provided with two hidden grooves, which are respectively aligned with two arc-shaped slots. The inner wall of the end cap 2 is provided with an annular embedded groove, and an embedded sealing bladder 7 is installed and connected in the annular embedded groove. The two hidden grooves are provided with airbag strips 71, and a connecting channel 72 is provided between the two airbag strips 71 and the embedded sealing bladder 7.

[0031] It should be noted that after the end cap 2 and the outer shell 1 are completely locked, the air bladder strips 71 inside the two hidden grooves are compressed by the push plate 81, causing the gas inside to enter the embedded sealing bladder 7 through the connecting channel 72, which causes the embedded sealing bladder 7 to expand and tightly fit the connection between the outer shell 1 and the end cap 2, forming a good sealing effect, effectively preventing liquid or gas from leaking from the connection, and ensuring the filtration effect and working performance of the filter element.

[0032] refer to Figure 4 As shown, a fixed rod 8 is fixedly connected in the hidden groove, and a push plate 81 is slidably connected on the fixed rod 8. The push plate 81 is located on one side of the airbag strip 71. A screw 82 is rotatably connected in the hidden groove. A turntable 9 is installed and connected to one end of the screw 82. The push plate 81 is provided with a threaded opening, and the push plate 81 is threadedly connected to the screw 82.

[0033] It should be noted that: when the two turntables 9 are rotated at the same time, the screw 82 is driven to rotate. Since the push plate 81 is threadedly connected to the screw 82, the rotation of the screw 82 causes the push plate 81 to slide on the fixed rod 8. The push of the push plate 81 will directly squeeze the airbag strip 71.

[0034] The working principle of the replaceable inner core filter element provided by this utility model is as follows: First, the built-in filter element 3 is assembled and inserted into the outer shell 1. The main locking part 4 at one end of the built-in filter element 3 cooperates with the main locking slot inside the end cap 2, and the auxiliary locking part 41 at the other end cooperates with the auxiliary locking slot on the inner wall of one end of the outer shell 1. The initial positioning and installation of the built-in filter element 3 in the outer shell 1 is quickly achieved, so that the built-in filter element 3 is stably located inside the outer shell 1.

[0035] As the outer protrusion 5 on the end cap 2 approaches the outer shell 1, two arc-shaped inserts 52 on the outer wall of one end of the outer shell 1 are respectively aligned with the two arc-shaped slots in the outer protrusion 5 and inserted. During the insertion process, since the outer wall of the outer protrusion 5 is symmetrically fixedly connected with the side tube 53, and the side tube 53 is aligned with the arc-shaped slot, when the arc-shaped insert 52 slides along the arc-shaped slot, the slide rod 6 slides in the side tube 53. The clamp 61 at one end of the slide rod 6 is set as a wedge head. As the arc-shaped insert 52 slides, the wedge-shaped clamp 61 is squeezed, and the slide rod 6 slides into the side tube 53, compressing the spring 62. When the arc-shaped insert 52 slides to the appropriate position, the clamp 61 is aligned with the locking groove on the side wall of the arc-shaped insert 52. Under the action of the return elastic force of the spring 62, the slide rod 6 returns to its original position, and the clamp 61 is locked into the locking groove, thereby realizing the firm locking of the end cap 2 and the outer shell 1, completing the quick disassembly and assembly of the filter element structure, so as to facilitate maintenance and reuse in subsequent use.

[0036] Finally, after the end cap 2 is completely locked to the outer shell 1, the turntable 9 is rotated simultaneously, driving the screw 82 to rotate. Since the push plate 81 is threadedly connected to the screw 82, the rotation of the screw 82 causes the push plate 81 to slide on the fixed rod 8. The push plate 81 pushes and compresses the airbag strip 71, so that the gas in the airbag strip 71 enters the embedded sealing bag 7 through the connecting channel 72, causing the embedded sealing bag 7 to expand and tightly fit the connection between the outer shell 1 and the end cap 2, forming a good sealing effect, effectively preventing liquid or gas from leaking from the connection, and ensuring the filtration effect and working performance of the filter element.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A filter element with a replaceable inner core, characterized in that, include: An outer shell (1) is provided with an end cap (2) at one end. An internal filter element (3) is provided inside the outer shell (1). A main clamping element (4) is provided at one end of the internal filter element (3). A secondary clamping element (41) is provided at the other end of the internal filter element (3). A main locking slot is provided inside the end cap (2). The main clamping element (4) is locked in the main locking slot. A secondary locking slot is provided on the inner wall of one end of the outer shell (1). The secondary clamping element (41) is locked in the secondary locking slot. A quick-locking mechanism is provided, comprising an outer convex ring (5), which is fixedly connected to the outer wall of the end cap (2). Two arc-shaped side plates (51) are symmetrically provided on the outer wall of one end of the outer cylinder shell (1). Arc-shaped inserts (52) are fixedly connected to the two arc-shaped side plates (51). Two arc-shaped slots are symmetrically provided in the outer convex ring (5). The two arc-shaped inserts (52) are slidably connected to the two arc-shaped slots respectively. Side tubes (53) are symmetrically fixedly connected to the outer wall of the outer convex ring (5). Locking grooves are provided on the side walls of the two arc-shaped inserts (52). Locking components are provided inside the two side tubes (53).

2. The filter element with a replaceable inner core according to claim 1, characterized in that, The two side tubes (53) are respectively aligned with the two arc-shaped slots. The outer convex ring (5) is symmetrically provided with two through holes. One end of the two through holes is connected to the side wall of the two arc-shaped slots, and the other end of the two side tubes (53) is respectively aligned with the other end of the two through holes.

3. A filter element with a replaceable inner core according to claim 1, characterized in that, The locking assembly includes a slide rod (6), which is slidably connected to the two end walls of the side tube (53). One end of the slide rod (6) is provided with a clip (61), and the inside of the side tube (53) is provided with a spring (62).

4. A filter element with a replaceable inner core according to claim 3, characterized in that, The slide bar (6) is provided with a limiting piece, which is located inside the side tube (53). One end of the spring (62) is connected to the limiting piece, and the other end of the spring (62) is connected to the inner wall of the side tube (53). The clamp (61) is a wedge-shaped head.

5. A filter element with a replaceable inner core according to claim 1, characterized in that, The outer convex ring (5) has two symmetrical hidden grooves inside, and the two hidden grooves are respectively aligned with two arc-shaped slots. The inner wall of the end cap (2) is provided with an annular embedded groove, and an embedded sealing bladder (7) is installed and connected in the annular embedded groove. The two hidden grooves are provided with airbag strips (71), and a connecting channel (72) is provided between the two airbag strips (71) and the embedded sealing bladder (7).

6. A filter element with a replaceable inner core according to claim 5, characterized in that, The hidden A fixing rod (8) is fixedly connected in the storage groove, and a push plate (81) is slidably connected on the fixing rod (8). The push plate (81) is located on one side of the airbag strip (71), and a screw (82) is rotatably connected in the hidden groove. A turntable (9) is installed and connected to one end of the screw (82), and a threaded opening is provided on the push plate (81). The push plate (81) is threadedly connected to the screw (82).

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