A laboratory residue filter

Abstract

The application discloses a laboratory residue filter and relates to the field of laboratory residue filters, which comprises a filter tank, a filter space is formed in the filter tank, a filter plate for filtering residues is arranged in the filter space, the inner wall of the filter space is semispherical, the surface of the filter plate is attached to the inner wall of the filter space, the surface of the filter plate close to the filter tank is tapered, and a positioning assembly for mounting the filter plate in the filter space is arranged between the filter plate and the filter tank. Through the design that the semispherical filter space inner wall is in abutment with the tapered filter plate, the residues in the liquid cannot directly enter the filter space without being filtered by the filter plate, all residues must pass through the filter plate, the filtering efficiency and effect are improved, and the positioning assembly can directly dismount the filter plate or make the filter plate turn over, so that multiple cleaning modes are provided for the filter plate, and the convenience and efficiency of cleaning and maintenance of the filter plate are improved.

Description

Technical Field

[0001] This application relates to the field of laboratory residue filtration, and in particular to a laboratory residue filter. Background Technology

[0002] In laboratory operations such as chemical analysis, drug synthesis, biological extraction and environmental monitoring, waste liquid containing solid residues is often generated during the operation. The residues include direct products of chemical reactions, such as insoluble salts generated by precipitation reactions, metals or metal oxides precipitated by redox reactions, and hydroxides formed by the hydrolysis of metal salts, as well as by-products of physical treatment processes, such as insoluble carriers remaining after extracting target components from solid samples such as animal and plant tissues, solid catalysts or desiccants used in homogeneous reactions, and impurities remaining after crystallization and purification.

[0003] Direct discharge or treatment will not only cause pollution, but also block pipes or affect subsequent experiments. Waste liquid with residue needs to be filtered through a filter before treatment to remove the residue.

[0004] The filter plates or filter plates inside the filter are usually flat or shallow disc-shaped structures, which are difficult to fit completely with the inner wall of the filter. This causes liquid containing residue to easily flow around through the gaps, resulting in liquid entering the container without being filtered. This reduces the filtration efficiency of the filter plate and affects the accuracy of experimental data. At the same time, after filtration, when disassembling or cleaning the filter plate, the residue attached to the filter plate is easy to spill, which can pollute the laboratory environment and reduce the cleaning efficiency of the filter plate. Utility Model Content

[0005] To address the issues of liquid easily flowing around the gap between the filter plate and the inner wall of the filter during filtration, reducing filtration efficiency and causing inconvenience during subsequent maintenance, this application provides a laboratory residue filter.

[0006] The laboratory residue filter provided in this application adopts the following technical solution:

[0007] A laboratory residue filter includes a filter canister, the filter canister having an internal filtration space, and the filtration space having a filter plate for filtering residue.

[0008] The inner wall of the filtration space is hemispherical, the surface of the filter plate is in contact with the inner wall of the filtration space, the side of the filter plate near the filter tank is treated with a tapered bevel, and a positioning component is provided between the filter plate and the filter tank for installing the filter plate inside the filtration space.

[0009] By adopting the above technical solution, the filter plate is quickly installed inside the filtration space through the positioning component, so that the surface of the filter plate abuts against the inner wall of the filtration space to filter the residue. The filter plate can also be quickly removed from the filtration space, which allows for quick cleaning of the filter plate and avoids residue residue affecting the next use. During the filtration process, the tapered bevel of the filter plate and its abutment design against the hemispherical inner wall of the filtration space prevent residue from entering the filtration space directly without being filtered by the filter plate, thereby achieving maximum residue filtration and improving filtration efficiency.

[0010] Preferably, the positioning component includes a connecting block symmetrically arranged on one side of the filter plate surface and a positioning block disposed inside the connecting block, wherein a through groove is formed on one side of the surface of the connecting block.

[0011] By adopting the above technical solution, after the filter plate is placed inside the filtration space, the lower surface of the connecting block abuts against the side of the filter tank near the filter plate. At this time, the positioning block is inserted into the groove to position the connecting block, preventing the filter plate from shifting during the filtration process and ensuring the stability of the filter plate during the filtration process.

[0012] Preferably, one of the connecting blocks has a pusher block disposed on one side of its surface near the filter plate surface of the filter tank, the pusher block being used to drive the filter plate out of the filtration space.

[0013] By adopting the above technical solution, the upward-moving pusher provides power to the connecting block, causing the connecting block to drive the filter plate to move, thereby moving the filter plate out of the filtration space. Conversely, by reversing the above process, the filter plate can be quickly installed inside the filtration space, enabling the filter plate to filter residues.

[0014] Preferably, the surface of the filter tank away from the filter plate is provided with a liquid outlet pipe communicating with the filtration space, and the end of the liquid outlet pipe away from the filter tank is provided with a liquid outlet valve for controlling the liquid to be discharged from the filtration space, and the end of the liquid outlet valve away from the liquid outlet pipe is provided with a discharge pipe.

[0015] By adopting the above technical solution, when the outlet valve is closed, the filtered liquid inside the filtration space cannot be discharged through the outlet pipe. When the outlet valve is open, the liquid inside the filtration space is discharged through the outlet pipe. The outlet pipe enters the discharge pipe through the outlet valve, thereby discharging the liquid after the residue has been filtered.

[0016] Preferably, a cover for covering the filtration space is provided on one side of the surface of the filter can, the filtration space being larger than the internal space of the cover near the surface of the filter can, and a handle for controlling the flipping of the cover is provided on the surface of the cover.

[0017] By adopting the above technical solution, pulling the handle causes the top cover to flip, so that one side of the top cover comes into contact with the surface of the filter tank. The filtration space is larger than the internal space of the side of the top cover closest to the surface of the filter tank. This effectively prevents liquids with residue from overflowing when filtered through the filter plate, thus protecting the laboratory environment.

[0018] Preferably, the side of the top cover away from the filter tank is provided with an inlet pipe communicating with the filter space, and the end of the inlet pipe away from the top cover is provided with an inlet valve for controlling the liquid to enter the filter space, and the end of the inlet valve away from the inlet pipe is provided with an inlet pipe.

[0019] By adopting the above technical solution, when the inlet valve is closed, liquid with residue cannot enter the interior of the filtration space through the inlet valve. When the inlet valve is open, liquid with residue enters the interior of the inlet pipe. The liquid enters the inlet pipe through the inlet valve and is then introduced into the interior of the filtration space, where the filter plates inside the filtration space filter the liquid.

[0020] Preferably, a spray nozzle for spraying is provided at the end of the inlet pipe away from the inlet valve, and a mounting ring is provided at the end of the spray nozzle near the inlet valve at the end of the inlet pipe away from the inlet valve.

[0021] By adopting the above technical solution, the nozzle can be detachably installed at the end of the inlet pipe away from the inlet valve by rotating the mounting ring. When the inlet pipe normally introduces liquid with residue, the nozzle can be detached from the end of the inlet pipe away from the inlet valve by the mounting ring.

[0022] When the filter plates need cleaning, the user first uses the drive pusher to rotate the filter plates 180°. The liquid pipe with residue at the end of the inlet pipe away from the inlet valve is replaced with a clean water pipe. The nozzle is then installed at the end of the inlet pipe away from the inlet valve via the mounting ring. Water from the water pipe enters the inlet pipe, passes through the inlet valve, and then enters the inlet pipe. The water from the inlet pipe then enters the nozzle, spraying water onto the side of the filter plate away from the filter tank. This rinses the filter plate, removing some of the residue deposited on its surface and ensuring the filter plate's filtration efficiency.

[0023] Preferably, the surface of the filter canister is provided with a plurality of supports arranged in a triangular pattern, the supports being used to support the filter canister.

[0024] By adopting the above technical solution, the brackets are installed on the surface of the filter tank in a triangular arrangement, so that the brackets can remain stable during the process of supporting the filter tank, thereby making the present application stable during use.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. By adopting a design where the inner wall of the hemispherical filtration space abuts against the filter plate with a conical inclined edge, it effectively prevents residues in the liquid from directly entering the filtration space without being filtered by the filter plate. This ensures that all residues must pass through the filter plate, improving filtration efficiency and effect. At the same time, the positioning component allows for direct disassembly of the filter plate or flipping of the filter plate, thus providing multiple cleaning methods for the filter plate. While ensuring filtration effect, it also improves the convenience and efficiency of filter plate cleaning and maintenance.

[0027] 2. By designing the filtration space of the filter tank to be larger than the internal space of the top cover, liquid splashing during filtration or rinsing is effectively prevented, ensuring the cleanliness of the laboratory environment and the safety of operators. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of the present application;

[0029] Figure 2 This is a partial three-dimensional structural schematic diagram of this application;

[0030] Figure 3 This is a cross-sectional structural diagram of the filter tube in this application;

[0031] Figure 4 For this application Figure 3 Enlarged view of point A in the middle;

[0032] Figure 5 This is a cross-sectional structural diagram of the cover of this application;

[0033] Figure 6 For this application Figure 5 Enlarged view of point B in the middle;

[0034] Figure 7 This is a cross-sectional structural diagram of the inlet pipe and nozzle of this application;

[0035] Figure 8 This is a cross-sectional structural diagram of the liquid inlet pipe of this application.

[0036] Attached reference numerals: 1. Filter tank; 11. Filter space; 12. Discharge pipe; 13. Discharge valve; 14. Outlet pipe; 15. Support; 16. Positioning groove;

[0037] 2. Top cover; 21. Liquid inlet pipe; 211. Mounting slot;

[0038] 22. Inlet valve; 23. Inlet tube; 24. Handle;

[0039] 25. Nozzle; 251. Mounting ring; 26. Connecting groove;

[0040] 3. Filter plate;

[0041] 4. Positioning component; 41. Push block; 42. Connecting block; 421. Insertion slot; 43. Positioning block. Detailed Implementation

[0042] The following is in conjunction with the appendix Figures 1-8 This application will be described in further detail.

[0043] This application discloses a laboratory residue filter.

[0044] Reference Figures 1-5 A laboratory residue filter includes a filter canister 1, with a filter space 11 inside the filter canister 1. A cover 2 for covering the filter space 11 is hinged to one side of the surface of the filter canister 1. The hinge is a prior art technology, and the specific principle will not be detailed here. The filter canister 1 is hemispherical in shape, and the cover 2 is conical in shape. The filter space 11 is larger than the internal space of the cover 2 near the surface of the filter canister 1, to prevent liquid leakage when rinsing or filtering the filter plate 3. The inner wall of the filter space 11 is abutted against the filter plate 3 for filtering residue. The filter plate 3 is composed of a filter screen and a conical frame. The filter screen is fixed to the inner surface of the conical frame by laser welding. That is, the surface of the conical frame of the filter plate 3 is in contact with the inner wall of the filter space 11. The side of the filter plate 3 near the surface of the filter canister 1 is treated with a conical bevel to prevent liquid with residue from entering the filter space 11 located below the filter plate 3 without being filtered by the filter plate 3.

[0045] A liquid inlet pipe 21 communicating with the filter space 11 is fixedly connected to the side of the top cover 2 away from the filter tank 1. The liquid inlet pipe 21 is located above the center of the filter plate 3. A liquid inlet valve 22 for controlling the liquid to enter the filter space 11 is fixedly connected to the end of the liquid inlet pipe 21 away from the top cover 2. An inlet pipe 23 is fixedly connected to the end of the liquid inlet valve 22 away from the liquid inlet pipe 21. The end of the inlet pipe 23 away from the liquid inlet valve 22 is connected to the liquid source with residue. The connection between the end of the inlet pipe 23 away from the liquid inlet valve 22 and the liquid source with residue is a threaded connection.

[0046] A liquid outlet pipe 12 communicating with the filtration space 11 is fixedly connected to the surface of the filter tank 1 away from the top cover 2. A liquid outlet valve 13 for controlling the liquid to be discharged from the filtration space 11 is fixedly connected to the end of the liquid outlet pipe 12 away from the filter tank 1. A discharge pipe 14 is fixedly connected to the end of the discharge valve 13 away from the liquid outlet pipe 12, and a storage container for collecting the filtered liquid is placed at the end of the discharge pipe 14 away from the liquid outlet valve 13.

[0047] It should be noted that when the inlet valve 22 is closed, liquid containing residue cannot enter the interior of the filter space 11 through the inlet valve 22. When the inlet valve 22 is open, liquid containing residue enters the interior of the inlet pipe 23. When the outlet valve 13 is closed, the filtered liquid inside the filter space 11 cannot be discharged through the outlet pipe 12. When the outlet valve 13 is open, the liquid inside the filter space 11 is discharged through the outlet pipe 12.

[0048] Connect the liquid source containing residue to the inlet pipe 23 and turn on the liquid source containing residue, so that the liquid containing residue enters the inside of the inlet pipe 23. At this time, the liquid inlet valve 22 is in the open state. The liquid enters the inside of the inlet pipe 21 from the inside of the inlet pipe 23 through the liquid inlet valve 22. The liquid is introduced into the inside of the filter space 11 through the liquid inlet pipe 21, so that the filter plate 3 inside the filter space 11 filters the liquid. During the filtration process, the tapered inclined edge of the filter plate 3 and the abutment design with the hemispherical inner wall of the filter space 11 prevent the residue from directly entering the inside of the filter space 11 without being filtered by the filter plate 3, thereby achieving maximum filtration of residue and improving filtration efficiency.

[0049] After filtration, the liquid enters the filtration space 11 located below the filter plate 3 and is discharged through the liquid outlet pipe 12. The liquid then passes through the liquid outlet valve 13 into the discharge pipe 14, and the liquid after residue filtration is discharged into the storage container, thereby completing the residue filtration treatment of the liquid containing residue.

[0050] Reference Figure 1 A handle 24 for controlling the flipping of the upper cover 2 is fixedly connected to one side of the surface of the upper cover 2. The top of the handle 24 is U-shaped.

[0051] By pulling the handle 24, the handle 24 causes the upper cover 2 to flip, so that one side of the surface of the upper cover 2 comes into contact with the surface of the filter tank 1, thus blocking the filter space 11. The filter space 11 is larger than the internal space of the side of the upper cover 2 closest to the surface of the filter tank 1, which can effectively prevent liquid with residue from overflowing when filtered by the filter plate 3, thereby protecting the laboratory environment.

[0052] Reference Figures 5-8 The end of the inlet pipe 21 away from the inlet valve 22 is connected to a spray nozzle 25. The end of the spray nozzle 25 near the inlet valve 22 is fixedly connected to a mounting ring 251. The surface of the mounting ring 251 is provided with external threads. The end of the inlet pipe 21 near the spray nozzle 25 is provided with a mounting groove 211 that is adapted to the mounting ring 251. The inner wall of the mounting groove 211 is provided with internal threads. The mounting ring 251 is fixed inside the mounting groove 211 by the engagement of the internal threads and external threads, thereby fixing the spray nozzle 25 to the end of the inlet pipe 21 away from the inlet valve 22.

[0053] By pulling the handle 24 upwards, the user causes the upper cover 2 to rotate 90° counterclockwise, making the upper cover 2 perpendicular to the filter tank 1. Then, by manually rotating the nozzle 25 clockwise, the nozzle 25 causes the mounting ring 251 to rotate. The mounting ring 251 enters the mounting groove 211 through the engagement of the external and internal threads. The mounting ring 251 is fixed inside the mounting groove 211 through the engagement of the internal and external threads, thereby fixing the nozzle 25 to the end of the liquid inlet pipe 21 away from the liquid inlet valve 22, thus realizing the quick installation and removal of the nozzle 25.

[0054] Reference Figure 1 Multiple brackets 15 arranged in a triangular pattern are fixedly connected to the surface of the filter tank 1. The brackets 15 are used to support the filter tank 1.

[0055] By arranging the brackets 15 in a triangular pattern on the surface of the filter tank 1, the brackets 15 can remain stable during the process of supporting the filter tank 1, thereby ensuring the stability of this application during use.

[0056] Figures 1-6 A positioning component 4 is provided between the filter plate 3 and the filter tank 1 for installing the filter plate 3 inside the filter space 11. The positioning component 4 includes a connecting block 42 symmetrically fixedly connected to one side of the surface of the filter plate 3. A connecting groove 26 adapted to the connecting block 42 is symmetrically opened on the side of the upper cover 2 near the surface of the filter tank 1. The surface of the connecting block 42 abuts against the inner wall of the connecting groove 26 to prevent the connecting block 42 from deviating. A through groove 421 is opened on one side of the surface of the connecting block 42. A positioning block 43 abuts against the inner wall of the through groove 421. A positioning groove 16 is opened on the side of the filter tank 1 near the surface of the upper cover 2. The positioning groove 16 communicates with the through groove 421. The bottom wall of the positioning groove 16 is fixedly connected to the side of the positioning block 43 away from the connecting block 42. A push block 41 for driving the filter plate 3 out of the filter space 11 is fixedly connected to one side of the surface of one of the connecting blocks 42. The top surface of the push block 41 is T-shaped.

[0057] When the filter plate 3 needs to be installed inside the filter space 11, pull the handle 24 upwards to rotate the top cover 2 counterclockwise by 90°, so that the top cover 2 and the filter tank 1 are perpendicular to each other, thus exposing the filter space 11. Hold the surfaces of the two connecting blocks 42 with both hands, align the insertion groove 421 with the positioning block 43 inside the positioning groove 16, and insert the positioning block 43 into the insertion groove 421. When the bottom surface of the connecting block 42 abuts against the surface of the filter tank 1 near the top cover 2, the surface of the positioning block 43 away from the filter tank 1 is at the same plane as the surface of the connecting block 42 away from the filter tank 1, so that the positioning block 43 positions the connecting block 42, thereby fixing the filter plate 3 inside the filter space 11, which is convenient for the user to clean the filter plate 3 later.

[0058] Then pull down the handle 24 to make the surface of the top cover 2 abut against the surface of the filter tank 1, so that the connecting block 42 is inserted into the inside of the connecting groove 26, and the top cover 2 limits the connecting block 42, thereby preventing the filter plate 3 from deviating due to liquid impact during use and ensuring the stability of the filter plate 3 during use.

[0059] When cleaning the filter plate 3, close the inlet valve 22 and the outlet valve 13, repeat the above operation of the handle 24 to expose the filter space 11, remove the residue from the surface of the filter plate 3, and then hold the push block 41 and the connecting block 42 away from the push block 41 to move the connecting block 42 upward, so that the connecting block 42 drives the filter plate 3 upward, thereby moving the filter plate 3 out of the filter space 11. After the filter plate 3 is moved out of the filter space 11, clean the filter plate 3.

[0060] Furthermore, the push block 41 can be rotated 180°, causing the push block 41 to drive the connecting block 42 to rotate 180°, and the connecting block 42 to drive the filter plate 3 to rotate 180°. After the rotation, the insertion groove 421 is realigned with the positioning block 43, and the connecting block 42 is moved downwards, so that the positioning block 43 is re-inserted into the insertion groove 421, so that the surface of the connecting block 42 is still in contact with the surface of the filter tank 1. After contact, the handle 24 is pulled downwards, so that the surface of the upper cover 2 is in contact with the surface of the filter tank 1. At this time, the side of the filter plate 3 away from the surface of the filter tank 1 is located in the internal space of the upper cover 2 near the filter tank 1.

[0061] The liquid pipe with residue at the end of the inlet pipe 23 away from the inlet valve 22 is replaced with a water pipe free of impurities. The nozzle 25 is installed at the end of the inlet pipe 21 away from the inlet valve 22 via the mounting ring 251, allowing water in the water pipe to enter the inlet pipe 23. The outlet pipe 14 and the inlet valve 22 are opened, allowing water to enter the inlet pipe 21 from inside the inlet pipe 23 through the inlet valve 22. The water then enters the nozzle 25 from inside the inlet pipe 21, spraying the water in the nozzle 25 onto the side of the filter plate 3 away from the filter tank 1, thereby rinsing the filter plate 3 and removing some of the residue that has settled on the surface of the filter plate 3. This completes the rinsing of the filter plate 3, ensuring the filtration effect of the filter plate 3 and preventing residue residue from affecting the next use.

[0062] Users can choose the appropriate cleaning method based on the amount of residue deposited on the surface of the filter plate 3 by directly cleaning the filter plate 3 or rinsing it with the nozzle 25. When there is a lot of residue deposited on the surface of the filter plate 3, the filter plate 3 can be removed and cleaned directly to avoid the residue in the cleaning water clogging the pipes. When there is a little residue deposited on the surface of the filter plate 3, the filter plate 3 can be rinsed with the nozzle 25. During the process of removing the filter plate 3 from the filter space 11, residual liquid on the surface of the filter plate 3 should be prevented from dripping into the laboratory to protect the laboratory environment.

[0063] It should be noted that: the filter tank 1, support 15, top cover 2, and filter plate 3 are made of 316L stainless steel; the inner surface of the filter space 11 is electrolytically polished; the push block 41, connecting block 42, and positioning block 43 are made of POM (polyoxymethylene); and the liquid outlet pipe 12, liquid outlet valve 13, outlet pipe 14, inlet pipe 23, inlet valve 22, and inlet pipe 21 are made of PTFE.

[0064] The implementation principle of a laboratory residue filter according to an embodiment of this application is as follows: During use, when the filter plate 3 needs to be installed inside the filtration space 11, the upper cover 2 and the filter tank 1 are brought into a perpendicular state by pulling the handle 24, thus exposing the filtration space 11. The filter plate 3 is quickly installed inside the filtration space 11 through the positioning component 4, so that the filter plate 3 can filter liquids containing residues. The filter plate 3 can be disassembled at any time through the connecting block 42, which is convenient for users to clean the filter plate 3 and avoid residue residue affecting the next use.

[0065] Liquid containing residue enters the filtration space 11 through the inlet pipe 23, the inlet valve 22, and the inlet pipe 21 in sequence, so that the filter plate 3 filters the liquid and leaves the residue on the surface of the filter plate 3. The filtered liquid is then discharged into the storage container through the outlet pipe 12, the outlet valve 13, and the outlet pipe 14, thus completing the filtration of liquid containing residue.

[0066] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A laboratory residue filter, characterized in that: Includes a filter tank (1), the filter tank (1) has a filter space (11) inside, and the filter space (11) is provided with a filter plate (3) for filtering residues; The inner wall of the filtration space (11) is hemispherical. The surface of the filter plate (3) is in contact with the inner wall of the filtration space (11). The side of the filter plate (3) near the filter tank (1) is treated with a tapered bevel. A positioning component (4) for installing the filter plate (3) inside the filtration space (11) is provided between the filter plate (3) and the filter tank (1).

2. A laboratory residue filter according to claim 1, characterized in that: The positioning component (4) includes a connecting block (42) symmetrically arranged on one side of the surface of the filter plate (3) and a positioning block (43) arranged inside the connecting block (42). A through groove (421) is provided on one side of the surface of the connecting block (42).

3. A laboratory residue filter according to claim 2, characterized in that: One of the connecting blocks (42) has a push block (41) on one side of its surface, which is located on the side of the filter tank (1) near the surface of the filter plate (3). The push block (41) is used to drive the filter plate (3) out of the filter space (11).

4. A laboratory residue filter according to claim 1, characterized in that: The surface of the filter tank (1) away from the filter plate (3) is provided with a liquid outlet pipe (12) that communicates with the filter space (11). The end of the liquid outlet pipe (12) away from the filter tank (1) is provided with a liquid outlet valve (13) for controlling the liquid to be discharged from the filter space (11). The end of the liquid outlet valve (13) away from the liquid outlet pipe (12) is provided with a discharge pipe (14).

5. A laboratory residue filter according to claim 1, characterized in that: The filter tank (1) has a cover (2) on one side of its surface for covering the filter space (11). The filter space (11) is larger than the internal space of the cover (2) on the side of the filter tank (1) that is close to the surface of the filter tank (1). The surface of the cover (2) is provided with a handle (24) for controlling the flipping of the cover (2).

6. A laboratory residue filter according to claim 5, characterized in that: The upper cover (2) is provided with an inlet pipe (21) communicating with the filter space (11) on the side of the surface away from the filter tank (1). The inlet pipe (21) is provided with an inlet valve (22) for controlling the liquid to enter the filter space (11) at the end away from the upper cover (2). The inlet valve (22) is provided with an inlet pipe (23) at the end away from the inlet pipe (21).

7. A laboratory residue filter according to claim 6, characterized in that: The end of the inlet pipe (21) away from the inlet valve (22) is provided with a spray nozzle (25) for spraying, and the end of the spray nozzle (25) near the inlet valve (22) is provided with a mounting ring (251) located at the end of the inlet pipe (21) away from the inlet valve (22).

8. A laboratory residue filter according to claim 1, characterized in that: The surface of the filter tank (1) is provided with a plurality of brackets (15) arranged in a triangular pattern, the brackets (15) being used to support the filter tank (1).

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