Positive pressure filter convenient to disassemble and assemble

Abstract

A positive pressure filter convenient to disassemble and assemble comprises a filtering bin, a base, an upper connecting assembly, a lower connecting assembly and a controller, the filtering bin covers the base and forms a filtering cavity, the lower connecting assembly comprises a lower electromagnet and a lower sealing ring, the lower sealing ring surrounds the filtering cavity and is arranged on the top face of the base, a lower containing groove is formed in the bottom face of the lower sealing ring, and the controller is connected with the lower electromagnet. The upper connecting assembly comprises an upper electromagnet and an upper sealing ring, the upper sealing ring is arranged on the bottom face of the filtering bin and arranged on the top face of the lower sealing ring, an upper containing groove is formed in the top face of the upper sealing ring, the upper electromagnet is arranged in the upper containing groove, the upper electromagnet is connected to the filtering bin, and the lower electromagnet is connected to the base. The controller is connected to the upper electromagnet and the lower electromagnet and enables the upper electromagnet and the lower electromagnet to attract each other so as to connect the filtering bin and the base; according to the utility model, the operation of disassembling and assembling the filter bin and replacing the filter paper is very convenient, and the working efficiency of filtering operation is high.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a positive pressure filter which is convenient for disassembly and assembly. Background Art

[0002] At present, positive pressure filters are widely used in places such as pharmaceutical factories, foods, hospitals and laboratories. They are often used for filtering liquids and sterilization. Their working principle is to place the filtrate in a sealed cavity filled with compressed air, and drive the liquid through the filter paper by pressure difference to achieve solid-liquid separation; among them, the filter paper plays an important role in solid-liquid separation. In order to ensure filtering efficiency and filtering effect, the filter paper needs to be replaced after filtering a certain amount of solution, so that in the process of filtering a batch of solution, the filter paper needs to be replaced many times. In general positive pressure filters, in order to ensure its sealing effect and prevent solution overflow, the shell and the base are connected by multiple bolts. Therefore, each time the filter paper is replaced, the bolts need to be removed before replacement, which makes the operation of replacing the filter paper troublesome and the filtering efficiency is low. Utility Model Content

[0003] The utility model aims to provide a positive pressure filter which is convenient to disassemble and assemble, so as to solve the technical problem that in the existing positive pressure filter, the operation of disassembling and assembling the shell to replace the filter paper is troublesome, resulting in low filtering efficiency.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a positive pressure filter which is easy to disassemble and assemble, including a filter bin, a base, an upper connecting assembly, a lower connecting assembly and a controller, wherein the filter bin cover is arranged above the base, a filter chamber is formed between the filter bin and the base, the lower connecting assembly includes a lower electromagnet and a lower sealing ring, the lower sealing ring is arranged on the top surface of the base around the filter chamber, a lower receiving groove is arranged on the bottom surface of the lower sealing ring, the lower electromagnet is arranged in the lower receiving groove, the lower electromagnet is connected to the base, the upper connecting assembly includes an upper electromagnet and an upper sealing ring, and the The upper sealing ring is arranged on the bottom surface of the filter bin corresponding to the lower sealing ring, and is arranged on the top surface of the lower sealing ring. The top surface of the upper sealing ring is provided with an upper accommodating groove. The upper electromagnet is arranged in the upper accommodating groove corresponding to the lower electromagnet. The upper electromagnet is connected to the filter bin. The controller is connected to the upper electromagnet and the lower electromagnet. The controller energizes the coils of the upper electromagnet and the lower electromagnet, thereby attracting the upper electromagnet and the lower electromagnet to connect the filter bin and the base, and enables the upper sealing ring and the lower sealing ring to seal the filter cavity.

[0005] Optionally, the base is provided with a plurality of lower connecting holes extending from the top surface to the bottom surface thereof, the lower connecting holes are arranged around the filter cavity, the bottom surface of the lower electromagnet is provided with a plurality of lower threaded holes corresponding to the lower connecting holes, and the lower connecting assembly also includes a plurality of lower bolts, the lower bolts pass through the lower connecting holes and the lower threaded holes in sequence to connect the base and the lower electromagnet.

[0006] Optionally, the filter chamber includes a shell and a flange, the flange is arranged around the shell and fixed to the outer wall of the shell, the flange is provided with an upper connecting hole extending from the top surface to the bottom surface thereof, the upper connecting hole is arranged around the filter chamber, the upper connecting assembly also includes an upper bolt, the top surface of the upper electromagnet is provided with an upper threaded hole, the lower connecting assembly also includes a plurality of upper bolts, the upper bolts pass through the upper connecting hole and the upper threaded hole in sequence to connect the flange and the upper electromagnet.

[0007] Optionally, a filter plate is further included, the top surface of the base is provided with a filter groove, the bottom of the filter groove is provided with a discharge hole penetrating to the bottom surface of the base, and the filter plate is arranged in the filter groove.

[0008] Optionally, it further includes a plurality of supporting feet, wherein the supporting feet are arranged on the bottom surface of the base, the top ends of the supporting feet are connected to the base, and the plurality of supporting feet are arranged around the filter cavity.

[0009] Optionally, a drain pipe is further included, wherein the drain pipe is inserted into the bottom surface of the base, and a tube hole of the drain pipe is connected to the filter cavity.

[0010] Optionally, it also includes a pressure component, which includes a communicating vessel, an air inlet valve, an exhaust valve and a pressure gauge, the communicating vessel is provided with an air inlet port, an exhaust port and a connecting port that are interconnected, the communicating vessel is detachably mounted on the top of the filter bin, the top of the filter bin is provided with a feed port connected to the filter cavity, the connecting port corresponds to the feed port, the air inlet valve is arranged at the air inlet port, the exhaust valve is arranged at the exhaust port, and the pressure gauge is installed on the communicating vessel to detect the air pressure of the connecting port.

[0011] Optionally, the upper sealing ring, the upper electromagnet, the lower sealing ring and the lower electromagnet are all annular components.

[0012] Optionally, a sliding rheostat is further included, wherein the sliding rheostat is arranged in a circuit in which the controller is connected to the upper electromagnet and the lower electromagnet to control the suction force between the upper electromagnet and the lower electromagnet.

[0013] Optionally, the lower receiving groove matches the lower electromagnet, and the upper receiving groove matches the upper electromagnet.

[0014] Compared with the prior art, the positive pressure filter of the utility model which is easy to assemble and disassemble has the following beneficial effects:

[0015] The utility model provides a lower sealing ring around the filter cavity on the top surface of the base, a lower electromagnet is provided in the lower accommodating groove on the bottom surface of the lower sealing ring, an upper sealing ring corresponding to the lower sealing ring is provided on the bottom surface of the filter bin, the upper sealing ring is provided on the top surface of the lower sealing ring, an upper electromagnet corresponding to the lower electromagnet is provided in the upper accommodating groove on the top surface of the upper sealing ring, a controller energizes the coils of the lower electromagnet and the upper electromagnet so that the lower electromagnet and the upper electromagnet have a magnetic force that attracts each other, the lower electromagnet and the upper electromagnet attract each other, so that the base connected with the lower electromagnet and the filter bin connected with the upper electromagnet have a tendency to continuously approach each other, thereby making the base and the filter bin fixedly connected, and when the filter paper needs to be replaced, the controller deenergizes the coils of the lower electromagnet and the upper electromagnet so that the lower electromagnet and the upper electromagnet are When the electromagnet no longer has magnetic force, the filter bin can be directly removed. Therefore, the operation of disassembling and assembling the filter bin to replace the filter paper is very convenient, and the positive pressure filter of the utility model has high working efficiency in filtering operation; further, the lower sealing ring and the upper sealing ring are abutted against each other, the bottom surface of the lower sealing ring abuts against the top surface of the base, and the top surface of the upper sealing ring abuts against the bottom surface of the filter bin to seal the filter cavity; further, when replacing the filter paper, the filter bin and the upper connecting assembly connected to the filter bin are removed together and then the filter paper is replaced, and there is no need to remove the lower connecting assembly. The lower connecting assembly is used as a surrounding wall to prevent the unfiltered solution from overflowing to the surrounding areas of the top surface of the base and dripping to the outside of the base, thereby reducing the waste of solution when replacing the filter paper and improving the utilization rate of the solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the utility model.

[0017] Figure 2 It is a front view of some parts of the utility model.

[0018] Figure 3 It is an exploded view of the utility model.

[0019] Figure numerals: 1. filter chamber; 11. shell; 12. flange; 13. feed port; 2. base; 21. discharge hole; 3. upper connecting assembly; 31. upper electromagnet; 32. upper sealing ring; 33. upper bolt; 4. lower connecting assembly; 41. lower electromagnet; 42. lower sealing ring; 43. lower bolt; 5. pressure assembly; 51. communicating vessel; 511. air inlet; 512. exhaust port; 513. communicating port; 52. air inlet valve; 53. exhaust valve; 54. pressure gauge; 6. drain pipe; 7. supporting foot; 8. filter plate. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0023] like Figures 1 to 3 As shown, the utility model is a positive pressure filter that is easy to disassemble and assemble, including a filter chamber 1, a base 2, an upper connecting component 3, a lower connecting component 4 and a controller. The filter chamber 1 cover is arranged above the base 2, and a filter chamber is formed between the filter chamber 1 and the base 2. The lower connecting component 4 includes a lower electromagnet 41 and a lower sealing ring 42. The lower sealing ring 42 is arranged on the top surface of the base 2 around the filter chamber. The bottom surface of the lower sealing ring 42 is provided with a lower receiving groove. The lower electromagnet 41 is arranged in the lower receiving groove. The lower electromagnet 41 is connected to the base 2. The upper connecting component 3 includes an upper electromagnet 31 and an upper sealing ring 32. The upper sealing ring 32 The lower sealing ring 42 is arranged on the bottom surface of the filter bin 1 corresponding to the lower sealing ring 42, and is arranged on the top surface of the lower sealing ring 42. The top surface of the upper sealing ring 32 is provided with an upper accommodating groove. The upper electromagnet 31 is arranged in the upper accommodating groove corresponding to the lower electromagnet 41. The upper electromagnet 31 is connected to the filter bin 1. The controller is connected to the upper electromagnet 31 and the lower electromagnet 41. The controller energizes the coil of the upper electromagnet 31 and the coil of the lower electromagnet 41, thereby causing the upper electromagnet 31 and the lower electromagnet 41 to attract each other, so as to connect the filter bin 1 and the base 2, and cause the upper sealing ring 32 and the lower sealing ring 42 to seal the filter cavity.

[0024] In the above technical solution, the controller energizes the coils of the lower electromagnet 41 and the upper electromagnet 31, so that the lower electromagnet 41 and the upper electromagnet 31 have a magnetic force that attracts each other, and the lower electromagnet 41 and the upper electromagnet 31 attract each other, so that the base 2 connected to the lower electromagnet 41 and the filter bin 1 connected to the upper electromagnet 31 have a tendency to continuously approach each other, thereby making the base 2 and the filter bin 1 fixedly connected. When the filter paper needs to be replaced, the controller de-energizes the coils of the lower electromagnet 41 and the upper electromagnet 31, so that the lower electromagnet 41 and the upper electromagnet 31 no longer have a magnetic force, and the filter bin 1 can be directly removed. Therefore, the operation of disassembling and assembling the filter bin 1 and the operation of replacing the filter paper are very convenient. The positive pressure filter of the utility model is convenient for disassembly and assembly, and has high working efficiency in filtering operation; further, the lower sealing ring 42 and the upper sealing ring 32 are abutted against each other, the bottom surface of the lower sealing ring 42 abuts against the top surface of the base 2, and the top surface of the upper sealing ring 32 abuts against the bottom surface of the filter bin 1 to seal the filter cavity; further, when replacing the filter paper, the filter bin 1 and the upper connecting component 3 connected to the filter bin 1 are removed together and then the filter paper is replaced, and there is no need to remove the lower connecting component 4. The lower connecting component 4 is used as a surrounding wall to prevent the unfiltered solution from overflowing to the surrounding areas of the top surface of the base 2 and dripping to the outside of the base 2, thereby reducing the waste of solution when replacing the filter paper and improving the utilization rate of the solution.

[0025] Furthermore, the top surface of the base 2 can be provided with a lower sealing groove corresponding to the lower sealing ring 42, and the lower sealing ring 42 is provided in the lower sealing groove and protrudes upward from the top surface of the base 2 to further improve the sealing effect. The bottom surface of the filter bin 1 can be provided with an upper sealing groove corresponding to the upper sealing ring 32, and the upper sealing ring 32 is provided in the upper sealing groove and protrudes downward from the bottom surface of the filter bin 1 to further improve the sealing effect.

[0026] Furthermore, the specific connection structure of the base 2 and the lower electromagnet 41 is as follows: the base 2 is provided with a plurality of lower connection holes extending from the top surface to the bottom surface thereof, the lower connection holes are arranged around the filter cavity, the bottom surface of the lower electromagnet 41 is provided with a plurality of lower threaded holes corresponding to the lower connection holes, the lower connection assembly 4 also includes a plurality of lower bolts 43, the lower bolts 43 pass through the lower connection holes and the lower threaded holes in sequence to connect the base 2 and the lower electromagnet 41.

[0027] Furthermore, the specific connection structure of the filter chamber 1 and the upper electromagnet 31 is as follows: the filter chamber 1 includes a shell 11 and a flange 12, the flange 12 is arranged around the shell 11 and fixedly arranged on the outer wall of the shell 11, the flange 12 is provided with an upper connecting hole extending from its top surface to the bottom surface, the upper connecting hole is arranged around the filter chamber, the upper connecting component 3 also includes an upper bolt 33, the top surface of the upper electromagnet 31 is provided with an upper threaded hole, the lower connecting component 4 also includes a plurality of upper bolts 33, the upper bolts 33 sequentially pass through the upper connecting hole and the upper threaded hole to connect the flange 12 and the upper electromagnet 31.

[0028] Furthermore, it also includes a filter plate 8, the top surface of the base 2 is provided with a filter groove, the bottom of the filter groove is provided with a discharge hole 21 that penetrates to the bottom surface of the base 2, and the filter plate 8 is arranged in the filter groove, wherein the filter plate hole plate surface of the filter plate 8 faces downward, the wire plate surface of the filter plate 8 faces upward, the top surface of the filter plate 8 is flush with the top surface of the base 2, and the filter paper is placed on the top surface of the filter plate 8, and the bottom surface of the lower sealing ring 42 and the top surface of the base 2 clamp the edge of the filter paper to fix the filter paper.

[0029] Furthermore, it also includes a plurality of support feet 7, which are arranged on the bottom surface of the base 2, and the top of the support feet 7 is connected to the base 2. The plurality of support feet 7 are arranged around the filter chamber to raise the base 2 so that the bottom of the base 2 can discharge liquid at its bottom.

[0030] Furthermore, it also includes a drain pipe 6, which is inserted into the bottom surface of the base 2, and the tube hole of the drain pipe 6 is connected to the filter cavity to guide the filtered liquid to a specific container through the drain pipe 6.

[0031] Furthermore, in order to realize the functions of adding materials, adding gas to increase pressure, exhausting and reducing pressure, and observing pressure values ​​in real time, the positive pressure filter chamber also includes a pressure assembly 5, and the pressure assembly 5 includes a communicating vessel 51, an air inlet valve 52, an exhaust valve 53 and a pressure gauge 54. The communicating vessel 51 is provided with an air inlet 511, an exhaust port 512 and a connecting port 513 that are interconnected. The communicating vessel 51 is detachably mounted on the top of the filter bin 1. The top of the filter bin 1 is provided with a feed port 13 connected to the filter chamber, and the connecting port 513 corresponds to the feed port 13. The air inlet valve 52 is provided at the air inlet 511, and the exhaust valve 53 is provided at the exhaust port 512. The pressure gauge 54 is installed on the communicating vessel 51 to detect the air pressure of the connecting port 513.

[0032] Furthermore, the upper sealing ring 32 , the upper electromagnet 31 , the lower sealing ring 42 and the lower electromagnet 41 are all annular components to obtain better sealing effect and magnetic attraction effect.

[0033] Furthermore, it also includes a sliding rheostat, which is arranged in the circuit of the controller connected to the upper electromagnet 31 and the lower electromagnet 41. The suction force between the upper electromagnet 31 and the lower electromagnet 41 can be controlled by adjusting the electrons of the sliding rheostat. Increasing the suction force can make the connection between the filter chamber 1 and the base 2 tighter and the sealing effect better. Reducing the suction force can reduce the heat generated by the upper electromagnet 31 and the lower electromagnet 41, so as to reduce the influence of the heat on the solution in the filter chamber.

[0034] Furthermore, the lower accommodating groove matches the lower electromagnet 41, and the upper accommodating groove matches the upper electromagnet 31. The lower accommodating groove and the upper accommodating groove are U-shaped grooves, so that the lower accommodating groove and the lower electromagnet 41 as well as the upper accommodating groove and the upper electromagnet 31 are interlocked and will not easily fall out of each other.

[0035] In another embodiment, the lower accommodating groove may include a lower bottom groove and a lower cavity connected in sequence from bottom to top, the width of the lower bottom groove in the cross section of the lower sealing ring 42 is smaller than the width of the lower cavity in the cross section of the lower sealing ring 42, the lower electromagnet 41 passes through the lower bottom groove into the lower cavity, the bottom surface of the lower electromagnet 41 abuts against the bottom surface of the lower cavity, and the top surface of the lower electromagnet 41 abuts against the top surface of the lower cavity; further, the upper accommodating groove may include an upper top groove and an upper cavity connected in sequence from top to bottom, the width of the upper top groove in the cross section of the upper sealing ring 32 is smaller than the width of the lower cavity in the cross section of the lower sealing ring 42, the upper electromagnet 31 passes through the upper top groove into the upper cavity, the bottom surface of the upper electromagnet 31 is lower than the bottom surface of the upper cavity, and the top surface of the upper electromagnet 31 is lower than the top surface of the upper cavity.

[0036] In summary, the embodiment of the utility model provides a positive pressure filter that is easy to assemble and disassemble, and its technical effects are:

[0037] The utility model arranges a lower sealing ring 42 around the filter cavity on the top surface of the base 2, a lower electromagnet 41 is arranged in the lower receiving groove on the bottom surface of the lower sealing ring 42, an upper sealing ring 32 corresponding to the lower sealing ring 42 is arranged on the bottom surface of the filter bin 1, the upper sealing ring 32 is arranged on the top surface of the lower sealing ring 42, an upper electromagnet 31 corresponding to the lower electromagnet 41 is arranged in the upper receiving groove on the top surface of the upper sealing ring 32, a controller energizes the coils of the lower electromagnet 41 and the upper electromagnet 31, so that the lower electromagnet 41 and the upper electromagnet 31 have a magnetic force of attraction, the lower electromagnet 41 and the upper electromagnet 31 attract each other, so that the base 2 connected with the lower electromagnet 41 and the filter bin 1 connected with the upper electromagnet 31 have a tendency to continuously approach each other, thereby making the base 2 and the filter bin 1 fixedly connected, and when the filter paper needs to be replaced, the controller energizes the coils of the lower electromagnet 41 and the upper electromagnet 31 The coil is powered off, so that the lower electromagnet 41 and the upper electromagnet 31 no longer have magnetic force, and the filter bin 1 can be directly removed. Therefore, the operation of disassembling and assembling the filter bin 1 to replace the filter paper is very convenient, and the positive pressure filter of the utility model has high working efficiency in filtering operation; further, the lower sealing ring 42 and the upper sealing ring 32 are abutted against each other, the bottom surface of the lower sealing ring 42 abuts against the top surface of the base 2, and the top surface of the upper sealing ring 32 abuts against the bottom surface of the filter bin 1 to seal the filter cavity; further, when replacing the filter paper, the filter bin 1 and the upper connecting component 3 connected to the filter bin 1 are removed together and then the filter paper is replaced, and there is no need to remove the lower connecting component 4. The lower connecting component 4 is used as a surrounding wall to prevent the unfiltered solution from overflowing to the surrounding of the top surface of the base 2 and dripping to the outside of the base 2, thereby reducing the waste of solution when replacing the filter paper and improving the utilization rate of the solution.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A positive pressure filter that is easy to assemble and disassemble, characterized in that: The invention comprises a filter chamber (1), a base (2), an upper connecting component (3), a lower connecting component (4) and a controller, wherein the filter chamber (1) is covered and arranged above the base (2), a filter chamber is formed between the filter chamber (1) and the base (2), the lower connecting component (4) comprises a lower electromagnet (41) and a lower sealing ring (42), the lower sealing ring (42) is arranged on the top surface of the base (2) around the filter chamber, a lower receiving groove is arranged on the bottom surface of the lower sealing ring (42), the lower electromagnet (41) is arranged in the lower receiving groove, the lower electromagnet (41) is connected to the base (2), the upper connecting component (3) comprises an upper electromagnet (31) and an upper sealing ring (32), the upper sealing ring (32) corresponds to the lower sealing ring (42) is arranged on the bottom surface of the filter bin (1) and on the top surface of the lower sealing ring (42); the top surface of the upper sealing ring (32) is provided with an upper receiving groove; the upper electromagnet (31) is arranged in the upper receiving groove corresponding to the lower electromagnet (41); the upper electromagnet (31) is connected to the filter bin (1); the controller is connected to the upper electromagnet (31) and the lower electromagnet (41); the controller energizes the coil of the upper electromagnet (31) and the coil of the lower electromagnet (41), thereby causing the upper electromagnet (31) and the lower electromagnet (41) to attract each other, so as to connect the filter bin (1) and the base (2), and cause the upper sealing ring (32) and the lower sealing ring (42) to seal the filter cavity.

2. The positive pressure filter that is easy to assemble and disassemble according to claim 1, characterized in that: The base (2) is provided with a plurality of lower connection holes extending from the top surface to the bottom surface thereof, the lower connection holes being arranged around the filter cavity, the bottom surface of the lower electromagnet (41) being provided with a plurality of lower threaded holes corresponding to the lower connection holes, the lower connection assembly (4) further comprising a plurality of lower bolts (43), the lower bolts (43) passing through the lower connection holes and the lower threaded holes in sequence to connect the base (2) and the lower electromagnet (41).

3. The positive pressure filter that is easy to assemble and disassemble according to claim 1, characterized in that: The filter chamber (1) comprises a shell (11) and a flange (12), wherein the flange (12) is arranged around the shell (11) and fixedly arranged on the outer wall of the shell (11), wherein the flange (12) is provided with an upper connection hole extending from the top surface to the bottom surface thereof, wherein the upper connection hole is arranged around the filter chamber, wherein the upper connection component (3) further comprises an upper bolt (33), wherein the top surface of the upper electromagnet (31) is provided with an upper threaded hole, and wherein the lower connection component (4) further comprises a plurality of upper bolts (33), wherein the upper bolts (33) pass through the upper connection hole and the upper threaded hole in sequence to connect the flange (12) and the upper electromagnet (31).

4. The positive pressure filter that is easy to assemble and disassemble according to claim 1, characterized in that: It also comprises a filter plate (8), the top surface of the base (2) is provided with a filter groove, the bottom of the filter groove is provided with a discharge hole (21) penetrating to the bottom surface of the base (2), and the filter plate (8) is arranged in the filter groove.

5. The positive pressure filter that is easy to assemble and disassemble according to claim 1, characterized in that: It also comprises a plurality of supporting feet (7), wherein the supporting feet (7) are arranged on the bottom surface of the base (2), the top ends of the supporting feet (7) are connected to the base (2), and the plurality of supporting feet (7) are arranged around the filter cavity.

6. The positive pressure filter that is easy to assemble and disassemble according to claim 1, characterized in that: It also comprises a drainage pipe (6), wherein the drainage pipe (6) is inserted into the bottom surface of the base (2), and the pipe hole of the drainage pipe (6) is connected to the filter cavity.

7. The positive pressure filter that is easy to assemble and disassemble according to claim 1, characterized in that: The invention also comprises a pressure assembly (5), wherein the pressure assembly (5) comprises a communicating vessel (51), an air inlet valve (52), an air outlet valve (53) and a pressure gauge (54); the communicating vessel (51) is provided with an air inlet (511), an air outlet (512) and a connecting port (513) which are interconnected; the communicating vessel (51) is detachably mounted on the top of the filter chamber (1); the top of the filter chamber (1) is provided with an inlet (13) which is connected to the filter chamber; the connecting port (513) corresponds to the inlet (13); the air inlet valve (52) is arranged at the inlet (511); the air outlet valve (53) is arranged at the air outlet (512); and the pressure gauge (54) is mounted on the communicating vessel (51) to detect the air pressure of the connecting port (513).

8. The positive pressure filter that is easy to assemble and disassemble according to claim 1, characterized in that: The upper sealing ring (32), the upper electromagnet (31), the lower sealing ring (42) and the lower electromagnet (41) are all annular components.

9. The positive pressure filter that is easy to assemble and disassemble according to claim 1, characterized in that: It also comprises a sliding rheostat, which is arranged in a circuit in which the controller is connected to the upper electromagnet (31) and the lower electromagnet (41) to control the suction force between the upper electromagnet (31) and the lower electromagnet (41).

10. The positive pressure filter that is easy to assemble and disassemble according to claim 1, characterized in that: The lower receiving groove matches the lower electromagnet (41), and the upper receiving groove matches the upper electromagnet (31).

Images