Filter element capable of being quickly disassembled and assembled

Abstract

The utility model discloses a filter element capable of being quickly disassembled and assembled, which comprises a tank body and a filter element assembly arranged in the tank body, the filter element assembly comprises an outer filter fixing ring coaxially arranged in the tank body, the lower part of the outer filter fixing ring is used for clamping and fixing an outer filter element, and the outer filter element is used for filtering fine impurities in materials; an inner filter fixing ring is coaxially installed on the inner side of the outer filter fixing ring, the lower portion of the inner filter fixing ring is used for clamping and fixing an inner filter element, and the inner filter element is used for filtering thick impurities in materials; a plurality of handles are respectively arranged above the outer filter fixing ring and the inner filter fixing ring, and are used for providing stress points for disassembling and assembling the outer filter fixing ring and the inner filter fixing ring. The inner filter element can be independently disassembled and assembled, the outer filter element and the inner filter element can be jointly disassembled and assembled, the inner filter element does not need to be disassembled firstly when the outer filter element is independently disassembled and assembled, various disassembly and assembly modes do not influence each other, and the disassembly and assembly efficiency of the outer filter element and the inner filter element is high.

Description

Technical Field

[0001] The utility model relates to the technical field of filter cores, in particular to a quickly disassembled filter core. Background Art

[0002] In the tobacco shred processing industry, filter elements are commonly used as a filtration medium for flavoring and adding flavors, removing impurities from liquid sugars and flavorings. To effectively remove impurities, filter elements feature a double-layered inner and outer mesh. Currently, most filter elements in this industry are welded together with the inner mesh, making them difficult to disassemble and thoroughly clean. Filter element damage often originates from the inner mesh, requiring the entire element to be replaced. The outer mesh retaining handle cannot be reused, resulting in waste of both the outer mesh and the handle, increasing operating costs and reducing production efficiency.

[0003] Among existing removable filter cartridges, Chinese invention patent CN200710067983.0 discloses a removable, decomposable filter cartridge comprising upper and lower end caps, inner and outer filter screens (i.e., the inner and outer filter cartridges of this application), and folded filter paper within the inner and outer filter screen interlayer. The inner walls of the upper and lower end caps, surrounding the through-holes, are provided with a positioning groove with several screw holes. The ends of the inner and outer filter screens have radially extending annular positioning skirts (i.e., the retaining rings of this application), each with retaining holes that mate with the screw holes in the positioning grooves of the end caps. A paper ring is provided at each end face of the folded annular filter paper, each with a through-hole in the middle. The inner and outer diameters of the paper rings are larger than those of the annular filter paper. The filter cartridge is connected to the upper and lower end caps by bolts. When replacing the filter cartridge, the space inside the tank is limited, and the inner and outer filter cartridges must be removed as a whole before disassembling the bolts. Removing the inner filter cartridge alone is not possible, and removing the bolts is time-consuming and labor-intensive. For example, the Chinese invention patent application with patent number CN201610627386.8 discloses a detachable multi-stage filter element for slurry, comprising a top cover with a vertical feed pipe, a threaded tube coaxial with the feed pipe around the feed pipe, and fixed to the bottom surface of the top cover. The filter element also comprises a plurality of cylindrical filter elements. The multi-stage filter elements are fitted together and connected by threads. The filter mesh aperture of the filter element with a larger cross-sectional diameter is smaller than the filter mesh aperture of the filter element with a smaller cross-sectional diameter. The multi-stage filter elements are connected by threads, and the top cover obscures the filter element. When removing the filter element, it is necessary to remove the top cover first, and then remove the first filter element, the middle filter element, and the outer filter screen in sequence. It cannot be removed directly from the middle filter element or the outer filter screen. There is no handle on the filter element, making it difficult for the operator to apply force. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a filter element that can be quickly disassembled and assembled, which is convenient for quickly replacing the outer filter element and the inner filter element, shortens the replacement time and improves the use efficiency.

[0005] The utility model is achieved through the following technical solutions:

[0006] A quick-disassembly filter element includes a tank body 1 and a filter element assembly 2 disposed in the tank body 1. The filter element assembly 2 includes:

[0007] The outer filter fixing ring 3 is coaxially mounted in the tank body 1 and is used to fix the outer filter element 4;

[0008] The outer filter element 4, the top of which is clamped under the outer filter fixing ring 3, is used to filter out fine impurities in the material;

[0009] The inner filter fixing ring 5 is coaxially mounted inside the outer filter fixing ring 3 and is used to fix the inner filter element 6.

[0010] The inner filter element 6, the top of which is clamped under the inner filter fixing ring 5, is used to filter coarse impurities in the material;

[0011] Several handles 7 are respectively provided above the outer filter fixing ring 3 and the inner filter fixing ring 5 to provide force points for disassembling and assembling the outer filter fixing ring 3 and the inner filter fixing ring 5 .

[0012] Furthermore, several tenon-type pins 41 are provided on the top of the outer filter element 4 and the inner filter element 6, and several tenon-type grooves 31 are provided on the bottom of the outer filter fixing ring 3 and the inner filter fixing ring 5. The tenon-type pins 41 are adapted to the tenon-type grooves 31, and the outer filter element 4 and the inner filter element 6 are respectively clamped in the tenon-type grooves 31 of the outer filter fixing ring 3 and the inner filter fixing ring 5 through the tenon-type pins 41.

[0013] Furthermore, a plurality of latch holes 32 are provided on the top of the outer filter fixing ring 3 and the inner filter fixing ring 5, and each latch hole 32 corresponds to and communicates with the middle of a tenon-type slot 31;

[0014] Both ends of the handle 7 are provided with latches 7a, which are adapted to the latch holes 32. The latches 7a inserted into the latch holes 32 can limit the position of the tenon-type latch 41 in the tenon-type slot 31.

[0015] Furthermore, the latch 7a includes:

[0016] The mechanism tube 71 is vertically arranged at the end of the handle 7, and the two sides of the lower part of the mechanism tube 71 are provided with limited through holes 72;

[0017] The pressing rod 73 is coaxially arranged in the mechanism tube 71, and the top of the pressing rod 73 extends upward from the mechanism tube 71;

[0018] A limit block 74 is provided at the bottom of the pressing rod 73;

[0019] Two limiting balls 75 are respectively arranged inside the two limiting through holes 72.

[0020] The return spring 76 has its bottom connected to the top of the limit block 74 and its top connected to the top surface of the mechanism tube 71;

[0021] The inner wall of the latch hole 32 is provided with a limiting groove 321 , and when the latch 7 a is engaged with the latch hole 32 , the outer sides of the two limiting balls 75 are located in the limiting groove 321 .

[0022] Furthermore, the outer edge 33 is provided outwardly on the outer side of the top of the outer filter fixing ring 3 and the inner filter fixing ring 5, and an external thread is provided on the outer cylindrical surface of the outer edge 33. The inner side of the outer filter fixing ring 3 and the inner wall of the tank body 1 are provided with an internal thread on the cylindrical surface above the sink 34; the outer filter fixing ring 3 is connected to the internal thread on the sink 34 on the inner wall of the tank body 1 through the external thread on the outer edge 33; the inner filter fixing ring 5 is connected to the internal thread on the sink 34 on the outer filter fixing ring 3 through the external thread on the outer edge 33.

[0023] Furthermore, a flexible sealing layer 42 is provided on the surface of the sink 34 and on the top of the outer filter element 4 and the inner filter element 6.

[0024] Furthermore, the top surfaces of the outer filter fixing ring 3 and the inner filter fixing ring 5 are slopes that slope outward and inward and from top to bottom.

[0025] Furthermore, a funnel 8 is coaxially arranged inside the inner filter fixing ring 5 , the bottom of the funnel 8 is threadedly connected to the inner side of the inner filter fixing ring 5 , and the top diameter of the funnel 8 is adapted to the inner diameter of the tank body 1 .

[0026] The working principle of this utility model:

[0027] The present invention divides the outer filter element 4 and the inner filter element 6 into two parts, which are respectively mounted via the outer filter fixing ring 3 and the inner filter fixing ring 5. The four mortise-type pins 41 at the top of the outer filter element 4 engage with the four mortise-type slots 31 at the bottom of the outer filter fixing ring 3 to form the outer filter element 4 assembly. Four handles 7 are inserted into the latch holes 32 at the top of the outer filter fixing ring 3 to limit and lock the outer filter element 4 from the outside of the mortise-type pins 41. The three mortise-type pins 41 at the top of the inner filter element 6 engage with the three mortise-type slots 31 at the bottom of the inner filter fixing ring 5 to form the inner filter element 6 assembly. The three handles 7 are inserted into the latch holes 32 at the top of the inner filter fixing ring 5 to limit and lock the inner filter element 6 from the outside of the mortise-type pins 41. The outer filter element 4 component, the inner filter element 6 component and the tank body 1 are coaxially set to form a secondary filtration. The outer filter fixing ring 3, the inner filter fixing ring 5 and the annular mounting plate on the tank body 1 are all coaxially threaded, forming three disassembly and assembly modes: the inner filter element 6 is disassembled and assembled separately, the outer filter element 4 and the inner filter element 6 are disassembled and assembled together, and the outer filter element 4 is disassembled and assembled, without affecting each other.

[0028] When the operator presses the pressing rod 73, the pressing rod 73 drives the limiting block 74 downward, the return spring 76 is stretched, and when the grooves on both sides of the gourd-shaped structure of the limiting block 74 drop to the same height as the two limiting balls 75, the two limiting balls 75 are released and retracted into the grooves on both sides of the gourd-shaped structure of the limiting block 74, avoiding the latch hole 32. The latches 7a at both ends of the handle 7 are inserted into the latch hole 32. When the operator releases the pressing rod 73, the return spring 76 contracts, and the pressing rod 73 moves upward and resets under the elastic force of the return spring 76. The wide part of the gourd-shaped structure of the limiting block 74 squeezes the two limiting balls 75 outward and moves them into the limiting groove 321 on the inner wall of the latch hole 32, preventing the latch 7a from being dislodged from the latch hole 32.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] The inner filter element 6 of the utility model can be disassembled and assembled separately, and the outer filter element 4 and the inner filter element 6 can be disassembled and assembled together. When the outer filter element 4 is disassembled and assembled separately, there is no need to disassemble the inner filter element 6 first. The multiple disassembly and assembly modes do not affect each other, and the disassembly and assembly efficiency of the outer filter element 4 and the inner filter element 6 is high.

[0031] The outer filter element 4 and the inner filter element 6 of the utility model only need to be equipped with a tenon-type pin 41 on the top. The improved structure of the filter element itself is simple, which facilitates the cleaning of the outer filter element 4 and the inner filter element 6; at the same time, the cost of replacing the outer filter element 4 and the inner filter element 6 is reduced.

[0032] The utility model limits the outer filter element 4 and the inner filter element 6 by the latch pins 7a at both ends of the handle 7, preventing the outer filter element 4 and the inner filter element 6 from loosening and falling out, thereby ensuring the stability of the installation of the outer filter element 4 and the inner filter element 6.

[0033] The outer filter fixing ring 3 and the inner filter fixing ring 5 of the utility model can be disassembled and assembled by holding the handle 7, which is convenient for disassembly and assembly; the outer filter fixing ring 3 and the inner filter fixing ring 5 are coaxially threadedly connected, and the supporting effect on the outer filter element 4 and the inner filter element 6 is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is an exploded view of the tank body and inner filter element of the utility model;

[0035] Figure 2 This is a schematic diagram of the three-dimensional structure of the filter element assembly of Example 1 of the present utility model;

[0036] Figure 3 This is an exploded view of the filter element assembly of Example 1 of the present utility model;

[0037] Figure 4 This is a schematic diagram of the three-dimensional structure of the filter element assembly of Example 2 of the present utility model;

[0038] Figure 5 This is an exploded view of the filter element assembly of Example 2 of the present utility model;

[0039] Figure 6 This is a structural diagram of the outer filter fixing ring of Example 2 of the present utility model;

[0040] Figure 7 This is a structural diagram of the inner filter fixing ring of Example 2 of the present utility model;

[0041] Figure 8 It is a side view of the utility model;

[0042] Figure 9 For this utility model Figure 8 A cross-sectional view of Example 2 at AA;

[0043] Figure 10 For this utility model Figure 9 A partial enlarged view of point B in the middle;

[0044] Figure 11 This is a diagram showing the use of the latch in Example 2 of the present utility model;

[0045] Figure 12 For this utility model Figure 8 Cross-sectional view of Example 3 at AA.

[0046] Numbers in the figure:

[0047] 1-tank body, 11-feed port, 12-discharge port, 13-exhaust port;

[0048] 2-Filter element assembly;

[0049] 3-external filter fixing ring, 31-tenon type slot, 32-pin hole, 321-limiting slot, 33-outer edge, 34-sunk platform;

[0050] 4-external filter element, 41-tenon-type bayonet pin, 42-flexible sealing layer;

[0051] 5-Inner filter fixing ring;

[0052] 6-Inner filter element;

[0053] 7-handle, 7a-latch, 71-mechanism cylinder, 72-limiting through hole, 73-pressing rod, 74-limiting block, 75-limiting ball, 76-return spring;

[0054] 8-Funnel. DETAILED DESCRIPTION

[0055] In order to enable those skilled in the art to better understand the technical solution of the present invention, its specific implementation methods are described in detail below with reference to the accompanying drawings.

[0056] Example 1:

[0057] like Figure 1 、 2 As shown in Figure 3, a filter element that can be quickly disassembled and assembled includes a tank body 1 and a filter element assembly 2, wherein the filter element assembly 2 includes an outer filter fixing ring 3, an outer filter element 4, an inner filter fixing ring 5, an inner filter element 6 and a handle 7.

[0058] In an embodiment, Figure 1 、 9 As shown, the tank body 1 is a cylindrical filter cartridge tank, with a feed port 11 provided at the upper middle position on one side of the tank body 1, an exhaust port 13 provided at the top of the tank body 1, and a discharge port 12 provided at the bottom of the tank body 1. A ring plate is welded to the upper middle position of the inner wall of the tank body 1, and a sink 34 is provided on the inner side of the ring plate. The sink 34 on the ring plate is used to install the outer filter fixing ring 3. The cylindrical surface above the sink 34 is provided with an internal thread, and a circle of flexible sealing layer 42 is provided on the sink 34. The flexible sealing layer 42 is used to seal the installation gap between the tank body 1 and the outer filter fixing ring 3 to prevent material from leaking from the installation gap without being filtered by the inner filter element 6 and the outer filter element 4.

[0059] In an embodiment, Figure 2 、 3 As shown, the outer filter retaining ring 3 is an annular plate-like structure with external threads on its outer cylindrical surface and internal threads on its inner cylindrical surface. The external threads on the outer filter retaining ring 3 mate with the internal threads on the annular plate recess 34 on the inner wall of the tank body 1. The number of internal and external threads does not exceed 10 to prevent excessive thread engagement between the outer filter retaining ring 3 and the tank body 1, making disassembly difficult. The outer filter retaining ring 3 and the outer filter element 4 are connected by threads or by a tenon-type bayonet pin 41 and a tenon-type bayonet slot 31.

[0060] In the embodiment, the mesh diameter of the outer filter element 4 is smaller than the mesh diameter of the inner filter element 6 , and the inner filter element 6 is used to filter coarse impurities in the material; the outer filter element 4 is used to filter fine impurities in the material.

[0061] In an embodiment, Figure 2 、 3 As shown, the inner filter retaining ring 5 has a similar structure to the outer filter retaining ring 3, being an annular plate-like structure. External threads are provided on the outer cylindrical surface of the inner filter retaining ring 5, matching the internal threads of the outer filter retaining ring 3. The number of internal and external threads does not exceed 10, preventing the outer and inner filter retaining rings 3 and 5 from rotating too many times, making disassembly difficult. The inner filter retaining ring 5 is connected to the inner filter element 6 via threads or via a latching pin 41 and a latching slot 31.

[0062] like Figure 2 、 3As shown, the handle 7 is arranged in the middle of the inner filter fixing ring 5, and the handle 7 is convenient for the operator to rotate the inner filter fixing ring 5 and extract the filter element.

[0063] Example 2:

[0064] like Figure 1 、 3 -11 shows a quick-disassembly filter element, comprising a tank body 1 and a filter element assembly 2, wherein the filter element assembly 2 comprises an outer filter fixing ring 3, an outer filter element 4, an inner filter fixing ring 5, an inner filter element 6 and several handles 7.

[0065] In an embodiment, Figure 4 、 5 As shown in Figure 6, the outer filter fixing ring 3 is an annular plate structure. An outer edge 33 is extended outward from the outer side of the top of the outer filter fixing ring 3. An external thread is provided on the outer cylindrical surface of the outer edge 33. A sink 34 is provided on the inner side of the outer filter fixing ring 3. An internal thread is provided on the cylindrical surface above the sink 34. A circle of flexible sealing layer 42 is provided on the surface of the sink 34; the external thread on the outer edge 33 of the outer filter fixing ring 3 is adapted to the internal thread on the annular plate sink 34 on the inner wall of the tank body 1, and the number of internal and external thread turns does not exceed 10 turns, so as to prevent the outer filter fixing ring 3 from having too many threads matched with the tank body 1, which makes disassembly difficult.

[0066] like Figure 5 As shown, four tenon-type slots 31 are provided on the bottom surface of the outer filter fixing ring 3, and four tenon-type pins 41 are provided on the top of the outer filter element 4. After the tenon-type pins 41 on the top of the outer filter element 4 are inserted into the tenon-type slots 31 on the bottom surface of the outer filter fixing ring 3, they are rotated along the tenon-type slots 31 to limit the tenon-type pins 41 in the tenon-type slots 31. Its structure is similar to the tenon-type quick-connect water pipe joint or the hanging light bulb in the prior art.

[0067] like Figure 6 As shown, eight latch holes 32 are provided on the top surface of the outer filter fixing ring 3. The eight latch holes 32 are grouped into two. One of the latch holes 32 in each group is located directly above the middle of a corresponding tenon-type slot 31. The spacing between the latch holes 32 in each group is the same as the spacing between the two latches 7a at both ends of the handle 7.

[0068] In an embodiment, Figure 4 、 5 As shown in Figures 7 and 8, the structure of the inner filter fixing ring 5 is similar to that of the outer filter fixing ring 3, which is a ring-shaped plate structure. An outer edge 33 is extended outward from the outer side of the top of the inner filter fixing ring 5, and an external thread is provided on the outer cylindrical surface of the outer edge 33. A circle of flexible sealing layer 42 is provided on the surface of the sink 34; the external thread on the outer edge 33 of the inner filter fixing ring 5 is adapted to the internal thread on the sink 34 of the outer filter fixing ring 3, and the number of internal and external thread circles does not exceed 10 circles, which prevents the outer filter fixing ring 3 and the inner filter fixing ring 5 from being rotated and disassembled too many times, making disassembly difficult.

[0069] like Figure 7 As shown, three tenon-type slots 31 are provided on the bottom surface of the inner filter fixing ring 5, and three tenon-type pins 41 are provided on the top of the inner filter element 6. After the tenon-type pins 41 on the top of the inner filter element 6 are inserted into the tenon-type slots 31 on the bottom surface of the inner filter fixing ring 5, they are rotated along the tenon-type slots 31 to limit the tenon-type pins 41 in the tenon-type slots 31, so that the inner filter fixing ring 5 and the inner filter element 6 can be connected.

[0070] like Figure 5 As shown, the top surface of the inner filter fixing ring 5 is provided with six latch holes 32, which are divided into three groups of two. One of the latch holes 32 in each group is located directly above the middle of a corresponding tenon-type slot 31, and the spacing between the latch holes 32 in each group is the same as the spacing between the two latches 7a at both ends of the handle 7.

[0071] In an embodiment, Figure 10 、 11 As shown, the two latches 7a and the handle 7 form a "F"-shaped grip. The latch 7a includes a mechanism barrel 71, a pressing rod 73, a stopper 74, two stopper balls 75, and a return spring 76. The pressing rod 73 can move up and down within the mechanism barrel 71, driving the stopper 74 up and down. The stopper 74 has a gourd-shaped structure. The wide portion of the gourd-shaped structure is used to squeeze the two stopper balls 75 outward into the stopper groove 321 on the inner wall of the latch hole 32, restricting the two stopper balls 75 from moving into the mechanism barrel 71. The grooves on both sides of the gourd-shaped structure of the stopper block 74 provide clearance for the two stopper balls 75 to release their restraints. The return spring 76 is a tension spring. When the operator presses the pressing rod 73, the return spring 76 is stretched. When the operator releases the pressing rod 73, the return spring 76 contracts, and the pressing rod 73 moves upward and resets under the elastic force of the return spring 76.

[0072] In an embodiment, Figure 10 As shown, the top surface of the annular plate of the tank body 1, the top surface of the outer filter fixing ring 3 and the inner filter fixing ring 5 are slopes sloping outward and inward and from top to bottom. When the material splashes onto the annular plate of the tank body 1, the outer filter fixing ring 3 and the inner filter fixing ring 5, the material can flow along the slope to the feed port in the middle of the inner filter fixing ring 5, preventing the material from accumulating on the annular plate of the tank body 1, the outer filter fixing ring 3 and the inner filter fixing ring 5, causing waste of material.

[0073] Example 3:

[0074] like Figure 12As shown, compared with Example 2, in Example 2, a funnel 8 is coaxially arranged on the inner side of the inner filter fixing ring 5. The bottom of the funnel 8 is threadedly connected to the inner side of the inner filter fixing ring 5. The top diameter of the funnel 8 is adapted to the inner diameter of the tank body 1. The annular plate of the tank body 1, the outer filter fixing ring 3, the inner filter fixing ring 5, and the handle 7 are located below the funnel 8 to guide the liquid material to be filtered and prevent the material from accumulating on the annular plate of the tank body 1, the outer filter fixing ring 3, the inner filter fixing ring 5, and the handle 7. Two handles can be provided on the inner wall of the funnel 8 to facilitate the removal of the funnel 8 by construction personnel.

[0075] Working mode of this utility model:

[0076] 1. When installing this device:

[0077] Step 1: The operator places the inner filter fixing ring 5 inside the outer filter fixing ring 3 and rotates the inner filter fixing ring 5 so that the inner filter fixing ring 5 is connected to the inner thread on the sink 34 of the outer filter fixing ring 3 through the outer thread on the outer edge 33 .

[0078] Step 2: Insert the tenon-type pin 41 of the inner filter element 6 into the tenon-type slot 31 on the inner filter fixing ring 5 and rotate and tighten it. Put the outer filter element 4 on the outside of the inner filter element 6, insert the tenon-type pin 41 of the outer filter element 4 into the tenon-type slot 31 on the outer filter fixing ring 3 and rotate and tighten it.

[0079] Step 3: Turn the assembled inner and outer filter elements over so that the inner filter fixing ring 5 and the outer filter fixing ring 3 face upwards, insert the handle 7 into the pin holes 32 on the inner filter fixing ring 5 and the outer filter fixing ring 3, and lock the tenon-type pins 41 of the inner filter element 6 and the outer filter element 4.

[0080] Step 4: Install the filter element assembly 2 assembled in Step 3 into the tank body 1, so that the outer edge 33 of the outer filter fixing ring 3 rests on the recessed platform 34 on the inner wall of the tank body 1. Then, grasp the handle 7 on the outer filter fixing ring 3 and turn it to tighten the external thread on the outer edge 33 of the outer filter fixing ring 3 into the internal thread on the recessed platform 34 on the inner wall of the tank body 1. If the structure is the same as that of Example 3, screw the external thread on the bottom of the funnel 8 into the internal thread on the inner side of the inner filter fixing ring 5.

[0081] 2. When replacing the inner filter element 6:

[0082] Step 1: Open the tank 1. The operator grasps the handle 7 on the inner filter fixing ring 5 and rotates it in the opposite direction to unscrew the inner filter fixing ring 5 and the inner filter element 6 from the outer filter fixing ring 3 and remove them. Then, press the pressing rods 73 on both sides of the handle 7 with both hands to release the locking pin 7a and remove the handle 7.

[0083] Step 2: After removing the three handles 7, rotate the inner filter element 6 in the opposite direction, loosen the inner filter element 6 and remove it from the tenon-type slot 31, replace the new inner filter element 6 and install it on the inner filter fixing ring 5, insert the three handles 7 into the pin holes 32 on the inner filter fixing ring 5 to limit the tenon-type pin 41 of the inner filter element 6.

[0084] Step 3: Then install the assembled filter element into the tank body 1, so that the outer edge 33 of the inner filter fixing ring 5 rests on the sink 34 of the outer filter fixing ring 3, then hold the handle 7 on the inner filter fixing ring 5 and turn it to tighten the external thread on the outer edge 33 of the inner filter fixing ring 5 with the internal thread on the sink 34 of the outer filter fixing ring 3.

[0085] 3. When replacing the outer filter element 4:

[0086] Step 1: Open the tank body 1. The operator grasps the handle 7 on the outer filter fixing ring 3 and rotates it in the opposite direction to unscrew and remove the outer filter fixing ring 3 and the inner filter fixing ring 5 from the tank body 1. Then, press the pressing rods 73 on both sides of the handle 7 at the top of the outer filter fixing ring 3 with both hands to release the locking pin 7a and remove the handle 7.

[0087] Step 2: After all four handles 7 are removed, rotate the outer filter element 4 in the opposite direction, loosen the outer filter element 4 and remove it from the tenon-type slot 31, replace the new outer filter element 4 and install it on the outer filter fixing ring 3, insert the four handles 7 into the pin holes 32 on the outer filter fixing ring 3 to limit the tenon-type pin 41 of the outer filter element 4.

[0088] Step 3: Then install the assembled filter element into the tank body 1, so that the outer edge 33 of the outer filter fixing ring 3 rests on the sink 34 on the inner wall of the tank body 1, then hold the handle 7 on the outer filter fixing ring 3 and turn it to tighten the external thread on the outer edge 33 of the outer filter fixing ring 3 with the internal thread on the sink 34 on the inner wall of the tank body 1.

[0089] It should be noted that the above detailed introduction to the technical solution of the present invention and the description of the principles of the present invention are intended only to help understand the core concept of the present invention. It should be noted that those skilled in the art can improve and modify the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0090] Those skilled in the art of the present invention may modify or supplement the specific embodiments described, or adopt similar methods to replace them, as long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, and all such modifications and additions are within the scope of protection of the present invention. Therefore, the scope of protection of this utility model patent shall be based on the appended claims.

Claims

1. A filter element for quick disassembly and assembly, comprising a tank body (1) and a filter element assembly (2) arranged in the tank body (1), characterized in that: The filter element assembly (2) comprises: An outer filter fixing ring (3) is coaxially mounted in the tank body (1) and is used to fix the outer filter element (4); The outer filter element (4) is clamped at the top below the outer filter fixing ring (3) and is used to filter fine impurities in the material; The inner filter fixing ring (5) is coaxially mounted inside the outer filter fixing ring (3) and is used to fix the inner filter element (6). The inner filter element (6) has its top clamped on the bottom of the inner filter fixing ring (5) and is used to filter out coarse impurities in the material; Several handles (7) are respectively arranged above the outer filter fixing ring (3) and the inner filter fixing ring (5) and are used to provide force points for disassembling and assembling the outer filter fixing ring (3) and the inner filter fixing ring (5).

2. The quick-disassembly filter element according to claim 1, characterized in that: The outer filter element (4) and the inner filter element (6) are provided with a plurality of mortise-type latches (41) at the top, and the outer filter fixing ring (3) and the inner filter fixing ring (5) are provided with a plurality of mortise-type slots (31) at the bottom. The mortise-type latches (41) are adapted to the mortise-type slots (31). The outer filter element (4) and the inner filter element (6) are respectively engaged in the mortise-type slots (31) of the outer filter fixing ring (3) and the inner filter fixing ring (5) through the mortise-type latches (41).

3. The quick-disassembly filter element according to claim 2, characterized in that: The tops of the outer filter fixing ring (3) and the inner filter fixing ring (5) are provided with a plurality of latch holes (32), and each latch hole (32) corresponds to and communicates with the middle of a tenon-type slot (31); Both ends of the handle (7) are provided with latches (7a), which are matched with the latch holes (32). The latches (7a) are inserted into the latch holes (32) to limit the position of the tenon-type latch (41) in the tenon-type slot (31).

4. The quick-disassembly filter element according to claim 3, characterized in that: The latch (7a) comprises: A mechanism tube (71) is vertically arranged at the end of the handle (7), and limited through holes (72) are arranged on both sides of the lower part of the mechanism tube (71); A pressing rod (73) is coaxially arranged in the mechanism tube (71), and the top of the pressing rod (73) extends upward from the mechanism tube (71); A limit block (74) is provided at the bottom of the pressing rod (73); Two limiting balls (75) are respectively arranged inside the two limiting through holes (72). A return spring (76), the bottom of which is connected to the top of the limit block (74), and the top of which is connected to the top surface of the mechanism tube (71); The inner wall of the latch hole (32) is provided with a limiting groove (321), and when the latch (7a) is matched with the latch hole (32), the outer sides of the two limiting balls (75) are located in the limiting groove (321).

5. The quick-disassembly filter element according to claim 1, characterized in that: The outer edges (33) are provided on the outer sides of the tops of the outer filter fixing ring (3) and the inner filter fixing ring (5), and an outer thread is provided on the outer cylindrical surface of the outer edge (33). An inner thread is provided on the cylindrical surface above the sinking platform (34) provided on the inner side of the outer filter fixing ring (3) and the inner wall of the tank body (1); the outer filter fixing ring (3) is connected to the inner thread on the sinking platform (34) on the inner wall of the tank body (1) through the outer thread on the outer edge (33); and the inner filter fixing ring (5) is connected to the inner thread on the sinking platform (34) of the outer filter fixing ring (3) through the outer thread on the outer edge (33).

6. The quick-disassembly filter element according to claim 5, characterized in that: A flexible sealing layer (42) is provided on the surface of the sink (34) and on the tops of the outer filter element (4) and the inner filter element (6).

7. The quick-disassembly filter element according to claim 1, characterized in that: The top surfaces of the outer filter fixing ring (3) and the inner filter fixing ring (5) are sloped surfaces that are inclined outward and inward and from top to bottom.

8. The quick-disassembly filter element according to claim 1, characterized in that: A funnel (8) is coaxially arranged on the inner side of the inner filter fixing ring (5), the bottom of the funnel (8) is threadedly connected to the inner side of the inner filter fixing ring (5), and the top diameter of the funnel (8) is adapted to the inner diameter of the tank body (1).

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