Filtering auxiliary frame

Abstract

The utility model relates to an auxiliary filtering frame. The auxiliary filtering frame comprises a bracket assembly and a plurality of fixing assemblies, a rotary through cavity is defined by the support assembly, the closed end of the filter screen is inserted into the rotary through cavity, the open end of the filter screen bypasses the top end of the support assembly and extends to the outside, and the extending part of the filter screen is attached to the peripheral wall of the support assembly; the multiple fixing assemblies are arranged on the peripheral wall of the support assembly, and the multiple fixing assemblies are arranged in the circumferential direction of the support assembly at intervals; the multiple fixing assemblies are used for fixing the extending part of the filter screen so that the filter screen can be fixed to the support assembly. By arranging the support assembly, compared with a traditional operation method, only the filter screen needs to be fixed to the support assembly and placed below a flushing pool faucet, the faucet is opened, operation can be conducted by one person, operation is easy and convenient, and manpower is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of filtration auxiliary frames, and particularly relates to a filtration auxiliary frame. Background Art

[0002] During daily experiments, filtration is required to detect the impurity content in pigment powder or color paste, which is an important index for product inspection.

[0003] The traditional operation method is to add an appropriate amount of liquid to the pigment powder and wet and stir it into a liquid or paste-like sample to be tested. Then pour the sample to be tested into a filter screen with a certain mesh number, and while rinsing with filtered tap water, gently knead the sample to be tested through the filter screen by hand. The fine pigment particles are kneaded and washed away through the filter screen, while the impurities remain in the filter screen. The samples to be filtered are not limited to pigment powder, but can also be various color pastes; the liquid used for rinsing is not limited to water, but can also be various solvents.

[0004] However, the traditional operation method requires two people to operate simultaneously, one holding the filter screen and the other kneading, which is extremely inconvenient; at the same time, it wastes manpower. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a filtration auxiliary frame, and its advantage is that it can be operated by one person, is simple and convenient, and saves manpower.

[0006] The above utility model purpose of the utility model is achieved through the following technical solutions: a filtration auxiliary frame includes a support assembly and a plurality of fixing components; the support assembly encloses a rotating through cavity, the closed end of the filter screen is inserted into the rotating through cavity, the open end of the filter screen extends to the outside around the top of the support assembly, and the extending part of the filter screen is attached to the outer peripheral wall of the support assembly; a plurality of the fixing components are all arranged on the outer peripheral wall of the support assembly, and the plurality of fixing components are arranged at intervals around the circumference of the support assembly; the plurality of fixing components are used for fixing the extending part of the filter screen so that the filter screen is fixed on the support assembly.

[0007] Preferably, for the filtration auxiliary frame provided by the utility model, the support assembly includes an installation sleeve and a support frame, an installation flange is arranged at the top of the installation sleeve, the installation flange extends radially outward along the installation sleeve, the support frame encloses a receiving cavity, the installation sleeve is inserted into the receiving cavity, the installation sleeve is arranged near the top of the receiving cavity, the outer peripheral wall of the installation sleeve is welded to the inner peripheral wall of the receiving cavity, and the installation flange is located outside the receiving cavity and is used for kneading the sample to be tested in the filter screen near the bottom end of the receiving cavity.

[0008] Preferably, the filtering auxiliary frame provided by the utility model comprises a base and a plurality of inclined struts, the bottom ends of the plurality of inclined struts are connected to the base, the plurality of inclined struts are arranged at intervals, and the plurality of inclined struts are jointly arranged to form the accommodating cavity; the mounting sleeve is inserted into the accommodating cavity, the mounting sleeve is arranged close to the top of the accommodating cavity, and the outer peripheral walls of the plurality of inclined struts are welded to the outer peripheral walls of the mounting sleeve.

[0009] Preferably, in the auxiliary filtering frame provided by the present invention, the base is in a circular ring shape.

[0010] Preferably, in the filtering auxiliary frame provided by the utility model, the mounting flange includes a first circular ring and a second circular ring, the first circular ring is sleeved on the second circular ring, the inner circumferential wall of the first circular ring is welded to the outer circumferential wall of the second circular ring, and the bottom surface of the second circular ring is connected to the top surface of the mounting sleeve.

[0011] Preferably, the filter auxiliary frame provided by the utility model, the fixing assembly includes an L-shaped bracket, a mounting rod and a pressing unit, one end of the L-shaped bracket is connected to the outer peripheral wall of the bracket assembly, the mounting rod is passed through the L-shaped bracket, the bottom end of the pressing unit is rotatably connected to the mounting rod, and the inner wall close to the top end of the pressing unit is used to fit with the outer peripheral wall of the bracket assembly; the pressing unit is used to cooperate with the bracket assembly so that the protruding portion of the filter net is clamped between the pressing unit and the bracket assembly.

[0012] Preferably, the filter auxiliary frame provided by the utility model, the pressing unit includes an arc-shaped pressure plate and two rotating rods, the top ends of the two rotating rods are connected to one side of the arc-shaped pressure plate, the bottom ends of the two rotating rods are respectively mounted on the opposite ends of the mounting rod, and the two rotating rods can rotate relative to the mounting rod; the side of the arc-shaped pressure plate facing away from the rotating rod is adapted to the outer peripheral wall of the bracket assembly, and the side of the arc-shaped pressure plate facing away from the rotating rod is used to fit with the outer peripheral wall of the bracket assembly, so that the protruding part of the filter net is clamped between the arc-shaped pressure plate and the bracket assembly.

[0013] Preferably, the filter auxiliary frame provided by the utility model is provided with a plurality of fixing spikes on the side of the arc-shaped pressure plate away from the rotating rod, and the plurality of fixing spikes are arranged at intervals along the extension direction of the arc-shaped pressure plate; a plurality of blind holes are provided on the outer peripheral wall of the bracket assembly, and the blind holes are arranged in a one-to-one correspondence with the fixing spikes, and the blind holes are adapted to the fixing spikes; when the protruding portion of the filter net is clamped between the pressing unit and the bracket assembly, one end of the fixing spike away from the arc-shaped pressure plate passes through the filter net and is inserted into the corresponding blind hole.

[0014] Preferably, in the filter auxiliary frame provided by the utility model, the pressing unit also includes a rubber pad, a plurality of through holes are opened on the rubber pad, the through holes are adapted to the fixing thorns, the through holes and the fixing thorns are arranged in a one-to-one correspondence, and the plurality of fixing thorns respectively pass through the plurality of through holes, one side of the rubber pad is adhesively connected to the side of the arc-shaped pressure plate away from the rotating rod, and the side of the rubber pad away from the arc-shaped pressure plate is used to fit with the outer peripheral wall of the bracket assembly, so that the protruding portion of the filter net is clamped between the rubber pad and the bracket assembly.

[0015] Preferably, in the auxiliary filter frame provided by the present invention, the mounting sleeve is in a truncated cone shape.

[0016] In summary, the beneficial technical effects of the utility model are as follows: the filter auxiliary frame provided in the present application includes a bracket assembly and multiple fixing assemblies; the bracket assembly is arranged to form a rotating through cavity, the closed end of the filter screen is inserted into the rotating through cavity, the open end of the filter screen bypasses the top of the bracket assembly and extends to the outside, and the protruding part of the filter screen is in contact with the outer peripheral wall of the bracket assembly; multiple fixing assemblies are arranged on the outer peripheral wall of the bracket assembly, and multiple fixing assemblies are arranged at circumferential intervals around the bracket assembly; multiple fixing assemblies are used to fix the protruding part of the filter screen so that the filter screen is fixed on the bracket assembly; by setting the bracket assembly, compared with the traditional operating method, it is only necessary to fix the filter screen on the bracket assembly and place it under the faucet of the flushing pool, turn on the faucet, and one person can operate it, which is simple and convenient and saves manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the auxiliary filtering frame provided by the embodiment of the utility model.

[0018] Figure 2 It is a structural schematic diagram of a support assembly in a filtering auxiliary frame provided in an embodiment of the utility model.

[0019] Figure 3 It is a structural schematic diagram of a fixing component in a filtering auxiliary frame provided in an embodiment of the utility model.

[0020] In the figure, 1, filter auxiliary frame; 10, bracket assembly; 11, rotating cavity; 12, mounting sleeve; 121, mounting flange; 1211, first ring; 1212, second ring; 122, blind hole; 13, support frame; 131, base; 132, inclined support rod; 20, fixing assembly; 21, L-shaped bracket; 211, horizontal part; 212, vertical part; 22, mounting rod; 221, stop flange; 23, pressing unit; 231, arc pressure plate; 2311, fixing thorn; 232, rotating rod; 2321, rotating sleeve. DETAILED DESCRIPTION

[0021] The present utility model will be further described in detail below in conjunction with the accompanying drawings.

[0022] Referring to Figure 1 , a filtering auxiliary rack 1 disclosed by the present utility model includes a bracket assembly 10 and a plurality of fixing assemblies 20; the bracket assembly 10 encloses a rotating through cavity 11, the closed end of the filter net is inserted into the rotating through cavity 11, the open end of the filter net extends around the top end of the bracket assembly 10 to the outside, and the extending part of the filter net fits against the outer peripheral wall of the bracket assembly 10; a plurality of fixing assemblies 20 are all arranged on the outer peripheral wall of the bracket assembly 10, and the plurality of fixing assemblies 20 are arranged at intervals around the circumferential direction of the bracket assembly 10; the plurality of fixing assemblies 20 are used to fix the extending part of the filter net so that the filter net is fixed on the bracket assembly 10; by providing the bracket assembly 10, compared with the traditional operation method, only the filter net needs to be fixed on the bracket assembly 10 and placed under the faucet of the flushing pool, and the faucet is opened, and one person can operate, which is simple and convenient and saves manpower.

[0023] Exemplarily, the bracket assembly 10 can be made of stainless steel material. Of course, the bracket assembly 10 can also be made of aluminum alloy material.

[0024] Continuing to refer to Figure 1 and Figure 2 , in this embodiment, the bracket assembly 10 includes an installation sleeve 12 and a support frame 13. The top end of the installation sleeve 12 is provided with an installation flange 121, and the installation flange 121 extends radially outward along the installation sleeve 12. The support frame 13 encloses a receiving cavity, the installation sleeve 12 is inserted into the receiving cavity, the installation sleeve 12 is arranged near the top of the receiving cavity, the outer peripheral wall of the installation sleeve 12 is welded to the inner peripheral wall of the receiving cavity, and the installation flange 121 is located outside the receiving cavity and is used to knead the test sample in the filter net near the bottom end of the receiving cavity; on the one hand, by providing the installation sleeve 12, it is avoided that liquid splashes on the operator during the operation; on the other hand, by providing the installation flange 121, the open end of the filter net extends around the installation flange 121 to the outside, thus facilitating the fixing of the filter net.

[0025] Specifically, the center line of the installation sleeve 12 is arranged parallel to the center line of the receiving cavity. In some implementable ways, the center line of the installation sleeve 12 is arranged collinear with the center line of the receiving cavity.

[0026] It should be noted that a space is left between the bottom end of the installation sleeve 12 and the bottom end of the receiving cavity in the receiving cavity, and this space is used for the operator to knead the test sample in the filter net.

[0027] Among them, the top surface of the installation sleeve 12 and the top surface of the receiving cavity are on the same horizontal plane, and the installation sleeve 12 and the support frame 13 together form the rotating through cavity 11.

[0028] Further, in this embodiment, the support frame 13 includes a base 131 and a plurality of inclined struts 132. The bottom ends of the plurality of inclined struts 132 are all connected to the base 131. The plurality of inclined struts 132 are arranged at intervals, and the plurality of inclined struts 132 together enclose a receiving cavity. The mounting sleeve 12 is inserted into the receiving cavity. The mounting sleeve 12 is arranged near the top of the receiving cavity. The outer peripheral walls of the plurality of inclined struts 132 are all welded to the outer peripheral wall of the mounting sleeve 12.

[0029] Specifically, the outer peripheral wall near the top end of the inclined strut 132 is welded to the outer peripheral wall of the mounting sleeve 12.

[0030] In this embodiment, the support frame 13 includes three inclined struts 132. The bottom ends of the three inclined struts 132 are all connected to the base 131. The three inclined struts 132 are arranged at intervals, and there is a gap between every two adjacent inclined struts 132. During use, the operator's hand passes through the gap and extends into the receiving cavity to facilitate kneading the test sample in the filter mesh.

[0031] Exemplarily, the base 131 can be in a circular ring shape. Of course, the base 131 can also be in a circular plate shape. In the realizable manner where the base 131 is in a circular ring shape, the bottom ends of the plurality of inclined struts 132 are all connected to the top surface of the base 131, and the plurality of inclined struts 132 are arranged at intervals around the circumference of the base 131.

[0032] Further, in this embodiment, the mounting flange 121 includes a first ring 1211 and a second ring 1212. The first ring 1211 is sleeved on the second ring 1212. The inner peripheral wall of the first ring 1211 is welded to the outer peripheral wall of the second ring 1212. The bottom surface of the second ring 1212 is connected to the top surface of the mounting sleeve 12.

[0033] Specifically, the inner diameter of the first ring 1211 is greater than the inner diameter of the second ring 1212. The center lines of the first ring 1211 and the second ring 1212 are both parallel to the center line of the mounting sleeve 12. In some realizable manners, the center lines of the first ring 1211 and the second ring 1212 are both collinear with the center line of the mounting sleeve 12.

[0034] Exemplarily, the mounting sleeve 12 can be in a frustum shape. Of course, the mounting sleeve 12 can also be in a cylindrical shape. In the realizable manner where the mounting sleeve 12 is in a frustum shape, the bottom surface of the second ring 1212 is connected to the small-diameter end of the mounting sleeve 12, and the outer diameter of the first ring 1211 is greater than the outer diameter of the small-diameter end of the mounting sleeve 12.

[0035] Continue to refer to Figure 1 and Figure 3, in this embodiment, the fixing component 20 includes an L-shaped bracket 21, a mounting rod 22 and a pressing unit 23. One end of the L-shaped bracket 21 is connected to the outer peripheral wall of the bracket component 10. The mounting rod 22 is passed through the L-shaped bracket 21. The bottom end of the pressing unit 23 is rotatably connected to the mounting rod 22. The inner wall near the top end of the pressing unit 23 is used to fit with the outer peripheral wall of the bracket component 10. The pressing unit 23 is used to cooperate with the bracket component 10 so that the protruding part of the filter screen is clamped between the pressing unit 23 and the bracket component 10. By providing the pressing unit 23, thus, it is convenient to fix the filter screen.

[0036] Specifically, the L-shaped bracket 21 includes a horizontal portion 211 and a vertical portion 212. One end of the horizontal portion 211 is connected to the bottom end of the vertical portion 212. The end of the horizontal portion 211 away from the vertical portion 212 is connected to the outer peripheral wall of the mounting sleeve 12.

[0037] Wherein, an installation hole is provided on the vertical portion 212. The installation hole penetrates the vertical portion 212. The mounting rod 22 is passed through the vertical portion 212 through the installation hole. Stop flanges 221 are provided at opposite ends of the mounting rod 22. The stop flanges 221 extend radially outward along the mounting rod 22. By providing the stop flanges 221, thus, it is possible to prevent the pressing unit 23 from detaching from the mounting rod 22.

[0038] During use, rotate the pressing unit 23 so that the pressing unit 23 is away from the mounting sleeve 12. Install the filter screen on the bracket component 10, and then rotate the pressing unit 23 in the direction towards the mounting sleeve 12 so that the protruding part of the filter screen is clamped between the pressing unit 23 and the bracket component 10 to fix the filter screen.

[0039] Further, in this embodiment, the pressing unit 23 includes an arc-shaped pressing plate 231 and two rotating rods 232. The top ends of the two rotating rods 232 are both connected to one side of the arc-shaped pressing plate 231. The bottom ends of the two rotating rods 232 are respectively sleeved on opposite ends of the mounting rod 22. The two rotating rods 232 can both rotate relative to the mounting rod 22. The side of the arc-shaped pressing plate 231 facing away from the rotating rods 232 is adapted to the outer peripheral wall of the bracket component 10. The side of the arc-shaped pressing plate 231 facing away from the rotating rods 232 is used to fit with the outer peripheral wall of the bracket component 10 so that the protruding part of the filter screen is clamped between the arc-shaped pressing plate 231 and the bracket component 10.

[0040] Specifically, the side of the arc-shaped pressing plate 231 facing away from the rotating rods 232 is adapted to the outer peripheral wall of the mounting sleeve 12. When fixing the filter screen, the arc-shaped pressing plate 231 cooperates with the outer peripheral wall of the mounting sleeve 12 so that the protruding part of the filter screen is clamped between the arc-shaped pressing plate 231 and the mounting sleeve 12.

[0041] Among them, a rotating sleeve 2321 is arranged at the bottom end of the rotating rod 232, and the center line of the rotating sleeve 2321 is arranged perpendicular to the center line of the rotating rod 232. The rotating sleeve 2321 is used to be sleeved on the mounting rod 22. The rotating sleeve 2321 can rotate relative to the mounting rod 22. When the rotating sleeve 2321 rotates to a preset position, the rotating sleeve 2321 is locked by a bolt to prevent the rotating sleeve 2321 from rotating.

[0042] Among them, the rotating rod 232 can adopt a telescopic rod. During use, when the arc pressure plate 231 rotates to the bottom of the mounting flange 121, at this time, the rotating rod 232 is lengthened to a preset length, and the pressing unit 23 is continued to be rotated until the side of the arc pressure plate 231 away from the rotating rod 232 is in contact with the outer wall of the mounting sleeve 12. At this time, the top surface of the arc pressure plate 231 is in contact with the ground of the mounting flange 121, thereby further improving the fixation of the filter screen.

[0043] Furthermore, in the present embodiment, a plurality of fixing spikes 2311 are provided on the side of the arc-shaped pressure plate 231 away from the rotating rod 232, and the plurality of fixing spikes 2311 are arranged at intervals along the extension direction of the arc-shaped pressure plate 231; a plurality of blind holes 122 are provided on the outer peripheral wall of the bracket assembly 10, and the blind holes 122 are arranged one-to-one with the fixing spikes 2311, and the blind holes 122 are adapted to the fixing spikes 2311; when the protruding portion of the filter screen is clamped between the pressing unit 23 and the bracket assembly 10, one end of the fixing spike 2311 away from the arc-shaped pressure plate 231 passes through the filter screen and is inserted into the corresponding blind hole 122; by providing the fixing spike 2311, the firmness of the connection between the filter screen and the bracket assembly 10 is further improved.

[0044] Specifically, multiple fixing spikes 2311 extend radially along the arc pressure plate 231, and multiple blind holes 122 are opened on the outer peripheral wall near the top of the mounting sleeve 12. The multiple blind holes 122 are arranged at intervals along the circumference of the mounting sleeve 12, and the blind holes 122 are arranged one-to-one with the fixing spikes 2311.

[0045] Furthermore, in this embodiment, the pressing unit 23 also includes a rubber pad, which is provided with a plurality of through holes, which are adapted to the fixing spikes 2311, and the through holes and the fixing spikes 2311 are arranged in a one-to-one correspondence, and the plurality of fixing spikes 2311 respectively pass through the plurality of through holes, and one side of the rubber pad is adhesively connected to the side of the arc-shaped pressing plate 231 away from the rotating rod 232, and the side of the rubber pad away from the arc-shaped pressing plate 231 is used to fit with the outer peripheral wall of the bracket assembly 10, so that the protruding portion of the filter net is clamped between the rubber pad and the bracket assembly 10; by providing the rubber pad, when the protruding portion of the filter net is clamped between the pressing unit 23 and the bracket assembly 10, the rubber pad contacts the protruding portion of the filter net, thereby increasing the friction between the rubber pad and the filter net, and further increasing the firmness of the connection between the filter net and the bracket assembly 10.

[0046] The use process of the filter auxiliary frame 1 provided in this embodiment is as follows: rotate the pressing unit 23 in the direction away from the installation sleeve 12, at this time, the fixing spike 2311 is pulled out of the blind hole 122, when the pressing unit 23 is rotated to a certain position, the filter screen is installed on the bracket assembly 10, and then, the pressing unit 23 is rotated in the direction of the installation sleeve 12 until the fixing spike 2311 passes through the filter screen and is inserted into the corresponding blind hole 122, and the side of the rubber pad away from the arc-shaped pressing plate 231 is in contact with the outer peripheral wall of the installation sleeve 12, so that the protruding part of the filter screen is clamped between the rubber pad and the bracket assembly 10, and the pressing unit 23 is locked by bolts to complete the fixation of the filter screen.

[0047] The filter auxiliary frame 1 provided in the present application includes a bracket assembly 10 and a plurality of fixing assemblies 20; the bracket assembly 10 is arranged to form a rotating cavity 11, the closed end of the filter screen is inserted into the rotating cavity 11, the open end of the filter screen bypasses the top of the bracket assembly 10 and extends to the outside, and the protruding part of the filter screen is in contact with the outer peripheral wall of the bracket assembly 10; the plurality of fixing assemblies 20 are all arranged on the outer peripheral wall of the bracket assembly 10, and the plurality of fixing assemblies 20 are arranged at circumferential intervals around the bracket assembly 10; the plurality of fixing assemblies 20 are used to fix the protruding part of the filter screen so that the filter screen is fixed on the bracket assembly 10; by setting the bracket assembly 10, compared with the traditional operation method, it is only necessary to fix the filter screen on the bracket assembly 10 and place it under the faucet of the flushing pool, turn on the faucet, and one person can operate it, which is simple and convenient and saves manpower.

[0048] The auxiliary filtering frame 1 provided by the utility model has the following advantages: the device has a simple structure, is easy to manufacture, and is convenient to operate.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0050] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly illustrating the present utility model, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present utility model.

Claims

1. A filter auxiliary frame, characterized in that: It includes a bracket assembly and a plurality of fixing assemblies; The support assembly is surrounded by a rotating cavity, the closed end of the filter screen is inserted into the rotating cavity, the open end of the filter screen bypasses the top of the support assembly and extends to the outside, and the extended portion of the filter screen is in contact with the outer peripheral wall of the support assembly; The plurality of fixing components are all arranged on the outer peripheral wall of the bracket component, and the plurality of fixing components are arranged at intervals around the circumference of the bracket component; The plurality of fixing components are used to fix the protruding portion of the filter screen so that the filter screen is fixed on the bracket component.

2. The filter auxiliary frame according to claim 1, characterized in that: The bracket assembly includes a mounting sleeve and a support frame, the top end of the mounting sleeve is provided with a mounting flange, the mounting flange extends radially outward along the mounting sleeve, the support frame is surrounded by a accommodating cavity, the mounting sleeve is inserted in the accommodating cavity, the mounting sleeve is arranged near the top of the accommodating cavity, the outer peripheral wall of the mounting sleeve is welded to the inner peripheral wall of the accommodating cavity, the mounting flange is located outside the accommodating cavity, near the bottom end of the accommodating cavity, and is used for kneading the sample to be tested in the filter net.

3. The filter auxiliary frame according to claim 2, characterized in that: The support frame includes a base and a plurality of inclined struts, the bottom ends of the plurality of inclined struts are connected to the base, the plurality of inclined struts are arranged at intervals, and the plurality of inclined struts are together arranged to form the accommodating cavity; the mounting sleeve is inserted into the accommodating cavity, the mounting sleeve is arranged close to the top of the accommodating cavity, and the outer peripheral walls of the plurality of inclined struts are welded to the outer peripheral walls of the mounting sleeve.

4. The filter auxiliary frame according to claim 3, characterized in that: The base is in a circular ring shape.

5. The filter auxiliary frame according to claim 2, characterized in that: The mounting flange includes a first circular ring and a second circular ring, the first circular ring is sleeved on the second circular ring, the inner circumferential wall of the first circular ring is welded to the outer circumferential wall of the second circular ring, and the bottom surface of the second circular ring is connected to the top surface of the mounting sleeve.

6. The filter auxiliary frame according to claim 1, characterized in that: The fixing assembly includes an L-shaped bracket, a mounting rod and a pressing unit, one end of the L-shaped bracket is connected to the outer peripheral wall of the bracket assembly, the mounting rod is passed through the L-shaped bracket, the bottom end of the pressing unit is rotatably connected to the mounting rod, and the inner wall close to the top end of the pressing unit is used to fit with the outer peripheral wall of the bracket assembly; The pressing unit is used to cooperate with the bracket assembly so that the extended portion of the filter screen is sandwiched between the pressing unit and the bracket assembly.

7. The filter auxiliary frame according to claim 6, characterized in that: The pressing unit includes an arc-shaped pressing plate and two rotating rods, the top ends of the two rotating rods are connected to one side of the arc-shaped pressing plate, the bottom ends of the two rotating rods are respectively sleeved on the opposite ends of the mounting rod, and the two rotating rods can rotate relative to the mounting rod; The side of the arc-shaped pressure plate away from the rotating rod is adapted to the outer peripheral wall of the bracket assembly, and the side of the arc-shaped pressure plate away from the rotating rod is used to fit with the outer peripheral wall of the bracket assembly so that the protruding portion of the filter screen is clamped between the arc-shaped pressure plate and the bracket assembly.

8. The filter auxiliary frame according to claim 7, characterized in that: A plurality of fixing spikes are arranged on one side of the arc-shaped pressing plate away from the rotating rod, and the plurality of fixing spikes are arranged at intervals along the extending direction of the arc-shaped pressing plate; A plurality of blind holes are arranged on the outer peripheral wall of the bracket assembly, and the blind holes are arranged in one-to-one correspondence with the fixing thorns, and the blind holes are adapted to the fixing thorns; When the extended portion of the filter screen is sandwiched between the pressing unit and the bracket assembly, the end of the fixing thorn away from the arc-shaped pressing plate passes through the filter screen and is inserted into the blind hole corresponding thereto.

9. The filter auxiliary frame according to claim 8, characterized in that: The pressing unit also includes a rubber pad, which is provided with a plurality of through holes, which are adapted to the fixing spikes, and the through holes and the fixing spikes are arranged in a one-to-one correspondence, and the plurality of fixing spikes pass through the plurality of through holes respectively, and one side of the rubber pad is adhesively connected to a side of the arc-shaped pressure plate away from the rotating rod, and the side of the rubber pad away from the arc-shaped pressure plate is used to fit with the outer peripheral wall of the bracket assembly, so that the protruding portion of the filter screen is clamped between the rubber pad and the bracket assembly.

10. The filter auxiliary frame according to claim 2, characterized in that: The installation sleeve is in a truncated cone shape.

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