A detachable built-in cartridge filter core with convenient filter replacement

Abstract

The application relates to a detachable built-in filter cartridge with filter material convenient to replace, belonging to the technical field of fluid filtration, which comprises a filter cartridge body and a filter cylinder body, a filter cartridge top seat and a filter cartridge bottom seat are fixedly arranged at the upper end and the lower end of the filter cartridge body respectively, the filter cylinder bottom seat and the filter cartridge bottom seat are matched through a rotating clamping structure, a filter cylinder cover is rotatably clamped at the top of the filter cartridge top seat, and a filter cartridge discharge port is arranged at the bottom of the filter cartridge bottom seat. The filter cartridge top seat is provided with a first locking ring with a first protrusion, the filter cartridge bottom seat is provided with a second protrusion, and the first locking ring and the second protrusion are matched with corresponding circular sliding grooves and protrusions respectively to realize quick dismounting and positioning. Equal-diameter circular filter holes are arranged in the circumferential array outside the filter cylinder body, and filter cloth is sewn on the inner wall of the filter cartridge body to realize filtration. The detachable structure is adopted, the problem that filter material of a traditional integrated filter cartridge cannot be replaced and maintained is solved, the detachable filter cartridge has the characteristics of convenient dismounting and assembling, stable assembly, uniform liquid inlet filtration, good dustproof effect of the top, effectively reduced use and maintenance costs, and is suitable for various fluid filtration working conditions and has high practicability.

Description

Technical Field

[0001] This invention belongs to the field of fluid filtration technology, specifically relating to a detachable built-in filter cartridge that facilitates filter media replacement. Background Technology

[0002] Filter cartridges are the core components of fluid filtration and purification systems, widely used in water treatment, chemical industry, environmental protection, and fluid purification. They are primarily used to intercept particulate matter, impurities, suspended solids, and other pollutants in fluids, ensuring fluid cleanliness. The ease of installation and removal, structural stability, filtration uniformity, and ease of maintenance of filter cartridges directly affect the operating efficiency and cost of the entire filtration system.

[0003] Currently, most traditional built-in cartridge filter elements on the market adopt a one-piece fixed structure, with the filter element and cartridge being assembled as a single unit and not detachable. During long-term filtration operations, the internal filter cloth and media are prone to adsorbing impurities, causing blockage and failure, requiring regular replacement and maintenance. Because traditional filter elements cannot be disassembled to remove the internal filter media, the entire filter element must be replaced when the media fails. This not only results in significant material waste and greatly increases equipment operating costs, but also involves cumbersome disassembly and assembly procedures, a large workload, and time-consuming and labor-intensive maintenance, hindering routine and rapid maintenance of the equipment.

[0004] Meanwhile, the existing filter cartridge assembly structure design is unreasonable, mostly using a single bolt for fastening or a simple snap-fit ​​method, resulting in poor positioning accuracy. Under long-term continuous fluid impact, it is prone to problems such as loosening, misalignment, and poor sealing, leading to leakage, filtration failure, and poor equipment operational stability. Furthermore, the disordered arrangement and inconsistent pore sizes of traditional filter cartridges cause uneven fluid entry, easily leading to excessive filtration load on some filter media and idle filtration in others. This not only results in poor filtration uniformity and low overall filtration accuracy but also easily causes premature clogging and aging of the filter media, shortening the overall service life of the filter cartridge. Summary of the Invention

[0005] The purpose of this invention is to provide a simple and rationally designed detachable internal filter cartridge that facilitates filter media replacement, in order to solve the above-mentioned problems.

[0006] The present invention achieves the above objectives through the following technical solutions: A detachable built-in filter cartridge for easy replacement of filter media includes a filter cartridge body and a filter cartridge body. The filter cartridge body has a filter cartridge top seat fixedly installed on its top, a filter cartridge base fixedly installed on its bottom, a filter cartridge base fixedly installed on its bottom and rotatably engaging with the filter cartridge base, a filter cartridge cover rotatably engaging with and limiting the movement of the filter cartridge body's top, and a filter cartridge outlet for discharging filter media opened at the bottom of the filter cartridge base.

[0007] As a further optimization of the present invention, a first locking ring is fixedly installed on the top of the filter element top seat. The two side walls of the first locking ring are integrally formed with first protrusions. The inner side wall of the filter element top seat is provided with a first circular groove that slides and engages with the two first protrusions. The bottom two sides of the filter element top seat are provided with first protrusions that engage with the two first protrusions and are inserted into the first circular groove.

[0008] As a further optimization of the present invention, the two side walls of the filter element base are integrally formed with second protrusions, the bottom of the inner side wall of the filter cartridge base is provided with a second circular groove that is slidably engaged with the second protrusions, and the top of the filter cartridge base and the filter cartridge body are both provided with a second protrusion that is slidably inserted into the second circular groove to engage with the second protrusions.

[0009] As a further optimization of the present invention, the inner sidewall of the filter element body is wrapped with filter cloth, and the outer sidewall of the filter cartridge body is provided with a plurality of filter holes arranged in a circumferential array.

[0010] As a further optimization of the present invention, all filter holes are circular through holes, and the diameter of all filter holes is consistent.

[0011] As a further optimization of the present invention, both the first protrusion and the second protrusion are arc-shaped block structures, and their thicknesses are equal.

[0012] As a further optimization of the present invention, the first circular groove and the second circular groove are both annular grooves, and the width of the grooves is adapted to the corresponding protrusions.

[0013] As a further optimization of the present invention, the bottom end face of the filter cartridge cover is a planar structure that is completely fitted to the top end face of the filter cartridge body.

[0014] The beneficial effects of this invention are as follows: 1. This invention enables the filter element to be detached and independently installed, facilitating filter media replacement and significantly improving maintenance efficiency. Existing integrated filter elements are mostly fixed as a whole. When the filter cloth or filter media becomes clogged and fails, the filter media cannot be replaced individually, and the entire filter element must be replaced, resulting in high operating costs, serious resource waste, and time-consuming and labor-intensive disassembly and assembly processes. This solution adopts a detachable structure for the filter element body and the filter cartridge body. Quick disassembly and unlocking are achieved through a rotating snap-fit ​​structure at the upper and lower ends. The filter element body can be directly pulled out to replace the internal filter cloth and filter media without disassembling the entire device. The replacement process is simple and the operation efficiency is high, which can effectively reduce the daily maintenance time and labor operation and maintenance costs of the equipment.

[0015] 2. This invention features a double-ended rotary snap-fit ​​positioning system, ensuring high assembly precision, secure locking, and excellent operational stability. Most existing filter elements use a single snap-fit ​​or bolt for fixing, resulting in poor positioning accuracy. Long-term fluid impact can easily lead to loosening, misalignment, and inadequate sealing, causing leakage. This solution employs a double-arc protrusion rotary snap-fit ​​structure. The bottom is positioned by a second protrusion sliding into a second circular groove, while the top is locked by a first protrusion rotating into a first circular groove. Furthermore, the upper and lower protrusions are of uniform thickness and symmetrical in structure, ensuring precise assembly alignment, uniform force distribution, and strong locking stability. This effectively prevents loosening and misalignment of the filter element during operation, guaranteeing long-term stable operation of the equipment.

[0016] 3. In this invention, both the first and second circular grooves are annular grooves adapted to the corresponding protrusions. The first and second protrusions, together with each other, enable a quick assembly method of vertical insertion and rotation locking, which has a high assembly error tolerance and simple alignment. The overall structure is compact and the layout is reasonable. No extra fasteners are required. The structure is simple and durable, and it is suitable for installation and use in various fluid filtration equipment, making it more versatile and practical. Attached Figure Description

[0017] Figure 1 This is an exploded structural diagram of the present invention; Figure 2 This is a side sectional view of the present invention; Figure 3 These are top and partial cross-sectional structural diagrams of the filter element body of the present invention; Figure 4 This is a schematic diagram of the overall structure of the present invention after assembly.

[0018] In the diagram: 1. Filter cartridge base; 2. Filter cartridge body; 3. Filter cartridge top seat; 4. Filter cartridge cover; 5. First circular groove; 6. Filter cartridge base; 7. Second circular groove; 8. Filter cartridge outlet; 9. First protrusion; 10. First locking ring; 11. First protrusion; 12. Second protrusion; 13. Filter cartridge body; 14. Second protrusion; 15. Filter holes. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] Example 1: As Figure 1 - Figure 4As shown, a detachable built-in filter cartridge with easy-to-replace filter media includes a filter cartridge base 1, a filter cartridge body 2, a filter cartridge top seat 3, a filter cartridge cover 4, a first circular groove 5, a filter cartridge base 6, a second circular groove 7, a filter cartridge outlet 8, a first protrusion 9, a first locking ring 10, a first protrusion 11, a second protrusion 12, a filter cartridge body 13, a second protrusion 14, and filter holes 15. The entire design employs a detachable assembly structure, with each component fitting tightly together, facilitating easy assembly and disassembly, and effectively meeting the needs of long-term fluid filtration.

[0021] like Figure 1 - Figure 4 As shown, the main body of this device includes a filter element body 2 and a filter cartridge body 13. The filter element body 2 is a built-in filtration core structure, and the filter cartridge body 13 is an external protective load-bearing structure. A filter element top seat 3 is fixedly installed on the top of the filter element body 2, and a filter element base 1 is fixedly installed on the bottom of the filter element body 2. The filter element top seat 3 and the filter element base 1 respectively fix and limit the upper and lower ends of the filter element body 2, ensuring that the overall structure of the filter element body 2 is regular and not easily deformed.

[0022] like Figure 1 - Figure 4 As shown, a filter cartridge base 6 is fixedly installed at the bottom of the filter cartridge body 13. The filter cartridge base 6 and the filter element base 1 are assembled and fixed by a rotating snap-fit ​​method, realizing quick positioning and installation of the bottom of the filter element body 2 and the bottom of the filter cartridge body 13. The bottom of the filter element base 1 has a filter element outlet 8 for feeding. The filtered fluid can be discharged outward through the filter element outlet 8 to complete the overall filtration process.

[0023] like Figure 1 - Figure 4 As shown, the top of the filter element top seat 3 is rotatably snapped with the filter cartridge cover 4. The bottom end face of the filter cartridge cover 4 is a flat structure, which can completely fit with the top face of the filter cartridge body 13, thereby achieving the abutment limit and sealing of the top of the filter cartridge body 13, effectively preventing external impurities from entering the filter cartridge, while ensuring the overall assembly sealing and structural stability.

[0024] like Figure 1 - Figure 4 As shown, a first locking ring 10 is fixedly installed on the top of the filter element top seat 3, and first protrusions 11 are integrally formed on both side walls of the first locking ring 10. A first circular groove 5 is formed on the inner side wall of the filter element top seat 3. The first circular groove 5 is an annular groove structure, and the width of the groove is adapted to the structure of the first protrusion 11, allowing the first protrusion 11 to slide and engage. First protrusions 9 are formed on both sides of the bottom of the filter element top seat 3. The first protrusions 9 are interconnected with the first circular groove 5, allowing the first protrusion 11 to be vertically inserted into the first circular groove 5, and then sliding and locking is achieved by rotation.

[0025] like Figure 1 - Figure 4 As shown, the filter cartridge base 1 has a second protrusion 12 integrally formed on both side walls. The bottom of the inner side wall of the filter cartridge base 6 has a second circular groove 7, which is also an annular groove. The width of the groove is adapted to the second protrusion 12, allowing the second protrusion 12 to slide and engage. The top of the filter cartridge base 6 and the filter cartridge body 13 both have a second protrusion 14, which communicates with the second circular groove 7, allowing the second protrusion 12 to be vertically inserted into the second circular groove 7. By rotating, the filter cartridge base 1 and the filter cartridge base 6 can be quickly engaged and fixed.

[0026] like Figure 1 - Figure 4 As shown, both the first protrusion 11 and the second protrusion 12 are set as arc-shaped block structures, and the thickness of the first protrusion 11 and the second protrusion 12 is equal, so that the upper and lower end snap-fit ​​structures are uniform in specifications and the force is even, the assembly and rotation process is smoother, the locking and alignment accuracy is higher, and the overall structure is more symmetrical and stable.

[0027] like Figure 1 - Figure 4 As shown, the inner wall of the filter cartridge body 2 is wrapped with filter cloth. The filter cloth serves as the core filtration medium, effectively intercepting and filtering impurities and particulate matter in the fluid to ensure the quality of fluid filtration. The outer wall of the filter cartridge body 13 has several circumferentially arrayed filter holes 15. All filter holes 15 are circular through holes, and the diameter of all filter holes 15 is consistent, ensuring that the external fluid can enter the filter cartridge body 13 evenly and stably, resulting in uniform liquid intake and avoiding uneven filtration load caused by excessively rapid local liquid intake.

[0028] It should be noted that this type of detachable built-in filter cartridge, which facilitates filter media replacement, involves vertically inserting the second protrusion 12 of the filter cartridge base 1 at the bottom of the filter cartridge body 2 into the second protrusion 14 at the top of the filter cartridge base 6. After the second protrusion 12 enters the second circular groove 7, the filter cartridge body 2 is rotated to allow the second protrusion 12 to slide and lock along the second circular groove 7, thus completing the bottom positioning and fixing of the filter cartridge. Subsequently, the first protrusion 11 of the first locking ring 10 at the top of the filter cartridge top seat 3 is aligned with the first protrusion 9 and inserted. The first locking ring 10 is rotated to allow the first protrusion 11 to engage in the first circular groove 5. The filter cartridge cover 4 is locked in place. Finally, the filter cartridge cover 4 is rotated and snapped onto the top of the filter element top seat 3, so that the lower plane of the filter cartridge cover 4 is completely fitted and pressed against the top surface of the filter cartridge body 13, thus completing the overall assembly. When it is necessary to replace the internal filter cloth and filter media, simply rotate the filter cartridge cover 4 in the reverse direction to remove it, and then rotate the first locking ring 10 and the filter element body 2 in the reverse direction, so that the first protrusion 11 and the second protrusion 12 slide out from the corresponding first circular slide groove 5 and the second circular slide groove 7 respectively to unlock. The filter element body 2 can then be directly pulled out as a whole to quickly replace the internal filter cloth and filter media without disassembling the entire equipment. The disassembly and assembly are simple and the maintenance is efficient.

[0029] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A detachable built-in filter cartridge for easy replacement of filter media, comprising a filter cartridge body (2) and a filter cylinder body (13), characterized in that: A filter element top seat (3) is fixedly installed on the top of the filter element body (2), a filter element base (1) is fixedly installed on the bottom of the filter element body (2), a filter cartridge base (6) is fixedly installed on the bottom of the filter cartridge body (13) and is rotatably engaged with the filter element base (1), a filter cartridge cover (4) is rotatably engaged with the top of the filter element top seat (3) and is abutted and limited by the top of the filter cartridge body (13), and a filter element outlet (8) for feeding is opened at the bottom of the filter element base (1).

2. The detachable built-in filter cartridge with easily replaceable filter media according to claim 1, characterized in that: The top of the filter element top seat (3) is fixedly installed with a first locking ring (10). The two side walls of the first locking ring (10) are integrally formed with first protrusions (11). The inner side wall of the filter element top seat (3) is provided with a first circular groove (5) that slides and engages with the two first protrusions (11). The bottom sides of the filter element top seat (3) are provided with first protrusions (9) that engage with the two first protrusions (11) and are inserted into the first circular groove (5).

3. A detachable built-in filter cartridge with easily replaceable filter media as described in claim 2, characterized in that: The filter cartridge base (1) has a second protrusion (12) integrally formed on both sides of the filter cartridge base (1). The bottom of the inner side wall of the filter cartridge base (6) is provided with a second circular groove (7) that is slidably engaged with the second protrusion (12). The top of the filter cartridge base (6) and the filter cartridge body (13) are provided with a second protrusion (14) that is slidably inserted into the second circular groove (7) in conjunction with the second protrusion (12).

4. A detachable built-in filter cartridge with easily replaceable filter media as described in claim 3, characterized in that: The inner wall of the filter element body (2) is wrapped with filter cloth, and the outer wall of the filter cartridge body (13) is provided with a number of filter holes (15) arranged in a circular array.

5. A detachable built-in filter cartridge with easily replaceable filter media as described in claim 4, characterized in that: All filter holes (15) are circular through holes, and the diameter of all filter holes (15) is consistent.

6. A detachable built-in filter cartridge with easily replaceable filter media according to claim 5, characterized in that: Both the first protrusion (11) and the second protrusion (12) are arc-shaped block structures, and their thicknesses are equal.

7. A detachable built-in filter cartridge with easily replaceable filter media according to claim 3, characterized in that: The first circular groove (5) and the second circular groove (7) are both annular grooves, and the width of the grooves is adapted to the corresponding protrusions.

8. A detachable built-in filter cartridge with easily replaceable filter media according to claim 1, characterized in that: The bottom end face of the filter cartridge cover (4) is a planar structure that fits perfectly with the top end face of the filter cartridge body (13).

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