Detachable bag type filter

Abstract

The utility model belongs to the technical field of bag type filters, and provides a detachable bag type filter. The air filter comprises a cylinder body, a filter element and a buckle, wherein a locking part is arranged at an opening of the cylinder body; a clamping ring is arranged in the middle of the buckle, a spring bolt part is arranged in the circumferential direction of the buckle, and the clamping ring is arranged at the liquid outlet end of the filter element in a sleeving mode and can rotate relative to the axial direction of the filter element; the buckle is rotated, and when the spring bolt part is matched with the locking part, the buckle is connected with the cylinder body so as to form a cavity for accommodating a filter element body of the filter element; when the spring bolt part is separated from the locking part, the buckle is separated from the cylinder body, so that the filter element is replaced through the opening. The filter element can be quickly mounted and dismounted, the structure is simple, and the cost can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of capsule filter technology, and in particular to a detachable capsule filter. Background Technology

[0002] Encapsulated filters, also known as integrated filters, use pleated imported filter membranes with a large filtration surface area, making them suitable for filtering large volumes of solutions. The outer surface of this filter is made of polypropylene material, free of adhesives and other chemicals, ensuring no sample contamination.

[0003] In existing technologies, the filter element and the cartridge body of a capsule filter are fitted together via grooves in the cartridge body. However, since the grooves are formed by an inverted inner wall, this inevitably increases the design and development costs of the mold. Furthermore, to accommodate the grooves in the cartridge body, the connector assembly of the filter element needs to be specially customized, further increasing development costs. After the filter element and cartridge body are fitted together, their structural assembly stability needs to be tested to withstand harsh fluid environments such as high temperatures, corrosion, and oxidation.

[0004] Therefore, a washing solution is needed to solve the above-mentioned technical problems. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a detachable bladder filter to solve the problem of inconvenient assembly of the cylinder and filter element in the prior art.

[0006] To achieve the above and other related objectives, this utility model provides a detachable capsule filter, specifically configured as follows: it includes a cylindrical body, a filter element, and a buckle; the opening of the cylindrical body is provided with a locking part; the buckle has a retaining ring in the middle and a locking tongue in the circumferential direction; the retaining ring is sleeved on the liquid outlet end of the filter element and can rotate relative to the axial direction of the filter element; when the buckle is rotated, when the locking tongue engages with the locking part, the buckle connects to the cylindrical body to form a chamber for accommodating the filter element body; when the locking tongue disengages from the locking part, the buckle separates from the cylindrical body, allowing the filter element to be replaced through the opening.

[0007] Optionally, the locking part is configured as a slot formed on the circumferential sidewall of the cylinder, the size of the slot along the axial direction of the cylinder gradually decreases in the direction toward the inner wall of the cylinder; the locking tongue is configured as a first limiting protrusion protruding from the circumferential sidewall of the buckle.

[0008] Optionally, the buckle is provided with an installation groove communicating with the retaining ring, and the liquid outlet end is provided with a first limiting protrusion. The buckle sleeved on the liquid outlet end is located between the filter element body and the first limiting protrusion.

[0009] Optionally, the detachable capsule filter further includes a first seal, a detachably connected locking ring, and an end cap. The first seal and the locking ring are both sleeved on the cylindrical body. A second limiting flange is provided on the circumferential sidewall of the cylindrical body near the opening. The first seal is located on the second limiting flange. When the locking ring is connected to the end cap, one end of the end cap facing the locking ring is pressed against the first seal, and the side of the locking ring away from the end cap abuts against the bottom of the second limiting flange.

[0010] Optionally, an annular groove is provided on the circumferential sidewall of the liquid outlet end, and a second sealing element is provided in the annular groove; the end cap is provided with a liquid inlet sleeve, which is sleeved on the liquid outlet end and cooperates with the second sealing element.

[0011] Optionally, the buckle is provided with a second limiting boss near the retaining ring, the liquid inlet sleeve is located between the circumferential sidewall of the liquid outlet end and the second limiting boss, and the end of the liquid inlet sleeve abuts against the buckle.

[0012] Optionally, the opening is further provided with grooves and flow holes at intervals, and each groove and flow hole is provided in more than one manner and is located above the first seal.

[0013] Optionally, one or more third limiting protrusions are provided on the circumferential sidewall of the cylinder, and the third limiting protrusions extend outward from the circumferential sidewall of the cylinder in a direction toward the opening; the inner wall of the locking ring on the side away from the end cap has the same inclination angle as the third limiting protrusion, so that the locking ring moves toward the second limiting protrusion through the third limiting protrusion and connects with the end cap; when the locking ring is separated from the end cap, the end of the locking ring away from the end cap abuts against the third limiting protrusion.

[0014] Optionally, a plurality of first reinforcing ribs are provided on the circumferential sidewall of the locking ring, and the first reinforcing ribs are distributed along the circumference of the locking ring.

[0015] Optionally, a plurality of second reinforcing ribs are provided on the inner wall of the bottom of the cylinder. The second reinforcing ribs are evenly distributed along the circumference of the cylinder and are located at the bottom of the filter element.

[0016] As described above, the detachable bladder filter of this utility model has the following beneficial effects:

[0017] By setting a locking part at the opening of the cylinder, and a retaining ring in the middle of the buckle with a locking tongue around its circumference, when the filter element needs to be installed, the filter element is placed into the inner cavity of the cylinder through the opening, and the retaining ring of the buckle is fitted onto the liquid outlet end of the filter element. The buckle can rotate relative to the axial direction of the filter element. Then, the buckle is rotated so that the locking tongue of the buckle engages with the locking part of the cylinder, so that the buckle is connected to the cylinder and forms a chamber for accommodating the filter element body, thus completing the installation of the filter element. When the filter element needs to be replaced, the buckle is rotated again so that the locking tongue of the buckle disengages from the locking part of the cylinder, thus separating the buckle from the cylinder. The filter element can then be taken out through the opening of the cylinder, thus replacing the filter element. The whole operation process is simple and convenient, which is conducive to the quick installation and removal of filter elements. Moreover, the simple structure helps to reduce costs. Attached Figure Description

[0018] Figure 1 The diagram shown is a structural schematic of a detachable bladder filter according to an embodiment of the present invention.

[0019] Figure 2 The diagram shown is a cross-sectional view of the removable bladder filter according to an embodiment of the present invention.

[0020] Figure 3 The diagram shown is a structural schematic of the cylinder according to an embodiment of the present utility model.

[0021] Figure 4 The diagram shown is a structural schematic of the buckle according to an embodiment of the present utility model.

[0022] Figure 5 The diagram shown is a structural schematic of the filter element according to an embodiment of the present utility model.

[0023] Figure 6 The diagram shown is a structural schematic of the end cap according to an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures

[0025] 1-Cylinder body; 11-Opening; 12-Locking part; 13-Second reinforcing rib; 14-Second limiting flange; 15-Groove; 16-Flow hole; 17-Third limiting boss;

[0026] 2-Filter element; 21-Liquid outlet end; 22-Filter element; 23-First limiting flange; 24-Annular groove; 25-Second seal;

[0027] 3-Snap fastener; 31-Snap ring; 32-Lock tongue; 33-Rotating boss; 34-Mounting groove; 35-Second limit boss;

[0028] 4-First seal;

[0029] 5-Locking ring; 51-First reinforcing rib;

[0030] 6-End cap; 61-Inlet sleeve; 62-First outlet port; 63-Second outlet port. Detailed Implementation

[0031] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0032] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the illustrations only show components relevant to this utility model and are not drawn according to the actual number, shape, and size of the components in implementation. In actual implementation, the shape, quantity, and proportion of each component can be arbitrarily changed, and the component layout may be more complex. The structures, proportions, and sizes shown in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of this utility model, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model.

[0033] like Figures 1 to 6 As shown, some embodiments of this application provide a detachable capsule filter, including a cylindrical body 1, a filter element 2, and a snap fastener 3. The cylindrical body 1 has an inner cavity with one end open 11, and a locking part 12 is provided at the open 11. A retaining ring 31 is provided in the middle of the snap fastener 3, and a locking tongue 32 is provided circumferentially. The retaining ring 31 of the snap fastener 3 can be sleeved on the liquid outlet end 21 of the filter element 2, and the snap fastener 3 can rotate relative to the axial direction of the filter element 2.

[0034] When filter element 2 needs to be installed, insert filter element 2 into the inner cavity of cylinder 1 through the opening 11 of cylinder 1, and fit the retaining ring 31 of buckle 3 onto the liquid outlet end 21 of filter element 2. Then rotate buckle 3 so that the locking tongue 32 of buckle 3 engages with the locking part 12 of cylinder 1, thereby connecting buckle 3 to cylinder 1 and forming a chamber to accommodate the filter element 2 body, thus completing the installation of filter element 2. It should be noted that since the diameter of the liquid outlet end 21 of filter element 2 is smaller than the diameter of filter element 2 body, buckle 3 can prevent filter element 2 from detaching from the inner cavity of cylinder 1 after the filter element 2 is installed.

[0035] When filter element 2 needs to be replaced, rotate buckle 3 again to disengage the locking tongue 32 of buckle 3 from the locking part 12 of cylinder 1, thus separating buckle 3 from cylinder 1. Filter element 2 can then be removed through the opening 11 of cylinder 1, completing the replacement of filter element 2. The entire operation process described above is simple and convenient, facilitating quick installation and removal of filter element 2. Furthermore, its simple structure helps reduce costs.

[0036] In some embodiments, the buckle 3 is provided with a plurality of rotating bosses 33. When it is necessary to rotate the buckle 3, the buckle 3 can be rotated by holding the rotating bosses 33.

[0037] In some embodiments, the locking part 12 is configured as a slot formed on the circumferential side wall of the cylinder 1, the size of which gradually decreases along the axial direction of the cylinder 1 toward the inner wall of the cylinder 1. The locking tongue part 32 is configured as a first limiting boss protruding from the circumferential side wall of the buckle 3. When the buckle 3 is rotated to insert the first limiting boss into the slot, the upper surface of the first limiting boss is interference-fitted with the upper side surface of the slot, so that the slot has a pressing and stabilizing effect on the first limiting boss.

[0038] In some embodiments, the buckle 3 is provided with a mounting groove 34 communicating with the retaining ring 31. The buckle 3 is fitted onto the liquid outlet end 21 of the filter element 2 through the mounting groove 34, or can be removed from the liquid outlet end 21 of the filter element 2 through the mounting groove 34. The liquid outlet end 21 of the filter element 2 is provided with a first limiting flange 23. The buckle 3 fitted onto the liquid outlet end 21 of the filter element 2 is located between the filter element 2 body and the first limiting flange 23 to limit the axial direction of the filter element 2. Furthermore, the retaining ring 31 of the buckle 3 limits the radial direction of the filter element 2. When the buckle 3 is fitted onto the liquid outlet end 21 of the filter element 2 and connected to the cylinder 1, the filter element 2 is completely fixed to the cylinder 1, further simplifying the installation and removal of the filter element 2 and the cylinder 1.

[0039] In some embodiments, a plurality of second reinforcing ribs 13 are provided on the inner wall of the bottom of the cylinder 1. The second reinforcing ribs 13 are evenly distributed along the circumference of the cylinder 1, which helps to improve the structural strength of the cylinder 1 itself and provides flow channels for the injection molding of the cylinder 1 during manufacturing. Moreover, the second reinforcing ribs 13 are located at the bottom of the filter element 2, and the second reinforcing ribs 13 have a certain centering effect on the installation of the filter element 2, so that the filtration channel between the outer diameter of the filter element 2 and the inner wall of the cylinder 1 is uniform, and the filtration fluid load of the filter membrane of the filter element 2 is balanced.

[0040] In some embodiments, a first sealing element 4 and a locking ring 5 are fitted onto the cylinder 1. The locking ring 5 is detachably connected to the end cap 6 via threads or other means. A second limiting flange 14 is provided on the circumferential sidewall of the cylinder 1 near the opening 11, and the first sealing element 4 is located on the second limiting flange 14. When the locking ring 5 is connected to the end cap 6, one end of the end cap 6 facing the locking ring 5 is pressed against the first sealing element 4, and the side of the locking ring 5 away from the end cap 6 abuts against the bottom of the second limiting flange 14. The second limiting flange 14 fixes the locking ring 5 and the end cap 6 to the cylinder 1. Furthermore, due to the presence of the first sealing element 4, the inner cavity of the cylinder 1, the upper part of the second limiting flange 14, and the inner cavity of the end cap 6 form a sealed space for filtering the fluid to be filtered through the filter element 2.

[0041] For example, the first seal 4 may include, but is not limited to, an O-ring.

[0042] In some embodiments, a plurality of first reinforcing ribs 51 are provided on the circumferential sidewall of the locking ring 5. These first reinforcing ribs 51 are distributed circumferentially along the locking ring 5, which helps to improve the structural strength of the locking ring 5 itself and provides a flow channel for the injection molding of the locking ring 5 during manufacturing. Furthermore, the first reinforcing ribs 51 also facilitate the rotational tightening of the locking ring 5 and the end cap 6, thereby reducing installation difficulty.

[0043] In some embodiments, an annular groove 24 is provided on the circumferential sidewall of the outlet end 21, and a second sealing element 25 is provided within the annular groove 24. The end cap 6 is provided with an inlet sleeve 61. When the end cap 6 is connected to the locking ring 5, the inlet sleeve 61 is sleeved on the outlet end 21 and cooperates with the second sealing element 25 to achieve a sealed installation between the inlet sleeve 61 and the outlet end 21 of the filter element 2. The annular groove 24 is located above the first limiting flange 23.

[0044] For example, the second seal 25 may include, but is not limited to, an O-ring or the like.

[0045] In some embodiments, the end cap 6 is provided with one or more first liquid outlet ports 62 communicating with the liquid inlet sleeve 61 to output the filtered fluid. The number of first liquid outlet ports 62 is set according to actual needs, and the multiple first liquid outlet ports 62 can be set with different diameters, or with different proportions of the same and different diameters, or all of them can be the same diameter.

[0046] In some embodiments, the buckle 3 is provided with a second limiting protrusion 35 near the retaining ring 31. When the end cap 6 is connected to the locking ring 5, the liquid inlet sleeve 61 is located between the circumferential sidewall of the liquid outlet end 21 of the filter element 2 and the second limiting protrusion 35 of the buckle 3, and the end of the liquid inlet sleeve 61 abuts against the buckle 3, thereby limiting the installation of the end cap 6.

[0047] In some embodiments, grooves 15 and flow holes 16 are also provided at intervals at the opening 11 of the cylinder 1. The grooves 15 and flow holes 16 are used to connect the inner wall and the outer wall of the cylinder 1. There are more than one groove 15 and flow hole 16, and the multiple grooves 15 and flow holes 16 are distributed along the circumference of the cylinder 1. The grooves 15 and flow holes 16 are located above the first seal 4, and are used to drain the drained liquid and the fluid to be filtered remaining on the outer wall of the cylinder 1 before replacing the filter element 2.

[0048] In some embodiments, the end cap 6 is further provided with one or more second liquid outlet ports 63 communicating with the groove 15 and the flow hole 16, for discharging the drained liquid and the fluid to be filtered remaining on the outer wall of the cylinder 1 before replacing the filter element 2. The number of second liquid outlet ports 63 is set according to actual needs, and the multiple second liquid outlet ports 63 can be set with different diameters, or with different proportions of the same and different diameters, or all of them can be the same diameter.

[0049] In some embodiments, one or more third limiting protrusions 17 are provided on the circumferential sidewall of the cylinder 1. These third limiting protrusions 17 extend outward from the circumferential sidewall of the cylinder 1 in a direction toward the opening 11 of the cylinder 1, and the number of third limiting protrusions 17 is set according to actual needs. The inner wall of the locking ring 5 on the side away from the end cover 6 has the same inclination angle as the third limiting protrusion 17, so that the locking ring 5 moves toward the second limiting protrusion 14 via the third limiting protrusion 17 and connects with the end cover 6. When the locking ring 5 is separated from the end cover 6, the end of the locking ring 5 away from the end cover 6 abuts against the third limiting protrusion 17, which helps to reduce the disassembly and installation time between the locking ring 5 and the cylinder 1 during filter element 2 replacement.

[0050] In summary, the detachable capsule filter provided by this utility model features a locking part at the opening of the cylinder, a retaining ring in the middle of the buckle, and a locking tongue around its circumference. When installing the filter element, the filter element is inserted into the inner cavity of the cylinder through the opening, and the retaining ring of the buckle is fitted onto the liquid outlet end of the filter element. The buckle can rotate relative to the axial direction of the filter element. Then, the buckle is rotated so that the locking tongue of the buckle engages with the locking part of the cylinder, connecting the buckle to the cylinder and forming a chamber for accommodating the filter element, thus completing the filter element installation. When replacing the filter element, the buckle is rotated again so that the locking tongue of the buckle disengages from the locking part of the cylinder, separating the buckle from the cylinder. The filter element can then be removed through the opening of the cylinder, achieving filter element replacement. The entire operation process is simple and convenient, facilitating quick installation and removal of the filter element. Furthermore, the simple structure helps reduce costs.

[0051] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A detachable capsule filter, characterized in that, include: The cylinder has a locking mechanism at the opening. Filter element; The buckle has a retaining ring in the middle and a locking tongue in the circumference. The retaining ring is sleeved on the liquid outlet end of the filter element and can rotate relative to the axial direction of the filter element. Rotating the buckle, when the locking tongue engages with the locking part, the buckle connects to the cylinder to form a chamber for accommodating the filter element body; when the locking tongue disengages from the locking part, the buckle separates from the cylinder to allow replacement of the filter element through the opening.

2. The detachable capsule filter according to claim 1, characterized in that: The locking part is configured as a slot formed on the circumferential side wall of the cylinder, and the size of the slot along the axial direction of the cylinder gradually decreases in the direction toward the inner wall of the cylinder; the locking tongue part is configured as a first limiting boss protruding from the circumferential side wall of the buckle.

3. The removable capsule filter according to claim 1, characterized in that: The buckle is provided with an installation groove that communicates with the retaining ring, and the liquid outlet end is provided with a first limiting protrusion. The buckle sleeved on the liquid outlet end is located between the filter element body and the first limiting protrusion.

4. The removable bladder filter according to any one of claims 1-3, characterized in that: The detachable capsule filter further includes a first sealing element, a detachably connected locking ring, and an end cap. The first sealing element and the locking ring are both sleeved on the cylindrical body. A second limiting flange is provided on the circumferential side wall of the cylindrical body near the opening. The first sealing element is located on the second limiting flange. When the locking ring is connected to the end cap, one end of the end cap facing the locking ring is pressed against the first sealing element, and the side of the locking ring away from the end cap abuts against the bottom of the second limiting flange.

5. The removable bladder filter according to claim 4, characterized in that: An annular groove is provided on the circumferential sidewall of the liquid outlet end, and a second sealing element is provided in the annular groove; the end cap is provided with a liquid inlet sleeve, which is sleeved on the liquid outlet end and cooperates with the second sealing element.

6. The removable bladder filter according to claim 5, characterized in that: The buckle is provided with a second limiting protrusion near the retaining ring, the liquid inlet sleeve is located between the circumferential sidewall of the liquid outlet end and the second limiting protrusion, and the end of the liquid inlet sleeve abuts against the buckle.

7. The removable bladder filter according to claim 4, characterized in that: The opening is also provided with grooves and flow holes at intervals, and there is one or more of each groove and flow hole, which are located above the first seal.

8. The removable bladder filter according to claim 4, characterized in that: One or more third limiting protrusions are provided on the circumferential sidewall of the cylinder. The third limiting protrusions extend outward from the circumferential sidewall of the cylinder in the direction toward the opening. The inner wall of the locking ring on the side away from the end cover has the same inclination angle as the third limiting protrusion, so that the locking ring moves toward the second limiting protrusion through the third limiting protrusion and connects with the end cover. When the locking ring is separated from the end cover, the end of the locking ring away from the end cover abuts against the third limiting protrusion.

9. The removable bladder filter according to any one of claims 5-8, characterized in that: The locking ring has a plurality of first reinforcing ribs on its circumferential sidewall, and the first reinforcing ribs are distributed along the circumference of the locking ring.

10. The removable bladder filter according to any one of claims 5-8, characterized in that: Multiple second reinforcing ribs are provided on the inner wall of the bottom of the cylinder. The second reinforcing ribs are evenly distributed along the circumference of the cylinder and are located at the bottom of the filter element.

Images