Filter

Abstract

The utility model provides a filtering machine which comprises a rack used for bearing parts and placing the filtering machine on the ground, a filtering barrel arranged on the rack and used for filtering a solution entering from the bottom and discharging the filtered solution from the bottom, a liquid inlet pipe arranged on the rack, and a liquid outlet pipe arranged on the filtering barrel and used for discharging the filtered solution from the bottom. The liquid inlet pipe is arranged on the rack, the liquid inlet pipe is used for conveying a solution, the solution can be well filtered, and the filtered solution is convenient for a worker to sample, so that the worker can conveniently detect whether the filtered solution meets the requirement or not, and the filtered solution can be filtered again when not meeting the requirement.

Description

Technical Field

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

[0002] A filter is a machine that separates solid from liquid by filtering a solution containing solid impurities. It is widely used in electroplating, chemical, pharmaceutical and other fields.

[0003] Although the above-mentioned filter can solve the corresponding technical problems, there are still some defects in the use process:

[0004] The solution cannot be filtered well; it is not convenient for staff to take samples of the filtered solution, and thus it is not convenient for staff to detect whether the filtered solution meets the requirements; if the filtered solution does not meet the requirements, it cannot be filtered again. Utility Model Content

[0005] The purpose of the utility model is to provide a filter to overcome the defects and shortcomings of the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A filter,

[0008] It includes a frame, which is used to carry components and place the filter on the ground;

[0009] A filter barrel, the filter barrel is arranged on the frame, and the filter barrel is used to filter the solution entering from the bottom and discharge the filtered solution from the bottom;

[0010] A liquid inlet pipe, which is arranged on the frame and is used to transport the solution;

[0011] An infusion device, which is disposed on the frame and connected to the liquid inlet pipe and the bottom of the filter barrel, and is used to extract an external solution and input a predetermined amount of the external solution into the filter barrel through the liquid inlet pipe;

[0012] a first valve, the first valve being arranged on the liquid inlet pipe, the first valve being used to open when the infusion device extracts the external solution, and to close after the infusion device inputs a predetermined amount of the external solution into the filter barrel through the liquid inlet pipe;

[0013] A drain pipe, which is disposed on the frame and communicated with the bottom of the filter barrel, and is used to transport the solution filtered by the filter barrel;

[0014] A sampling device, the sampling device is connected to the drainage pipe, and the sampling device is used to facilitate the staff to sample the solution filtered by the filter barrel when the drainage pipe transports the solution filtered by the filter barrel, so as to facilitate the staff to detect whether the solution filtered by the filter barrel meets the predetermined requirements;

[0015] A second valve, the second valve is arranged on the liquid discharge pipe, the second valve is used to close before the staff detects that the solution filtered through the filter barrel meets the predetermined requirements, and to open after the staff detects that the solution filtered through the filter barrel meets the predetermined requirements;

[0016] An auxiliary device, the auxiliary device is arranged on the frame, one end of the auxiliary device is connected to the sampling device, the other end of the auxiliary device is connected to the liquid inlet pipe, the other end of the auxiliary device is arranged between the first valve and the infusion device, and the auxiliary device is used to purify the solution filtered by the filter barrel in the discharge pipe and transport it to the liquid inlet pipe when the staff detects that the solution filtered by the filter barrel does not meet the predetermined requirements;

[0017] The infusion device is also used for inputting the solution filtered by the filter barrel into the filter barrel when the auxiliary device transports the solution filtered by the filter barrel in the discharge pipe to the inlet pipe.

[0018] A further improvement is that it also includes a sewage discharge device, which is connected to the bottom of the filter barrel and is used to open when the filter barrel is discharging sewage and close when the filter barrel is not discharging sewage.

[0019] A further improvement is that it also includes a detection device, which is arranged on the filter barrel and is used to detect the air pressure value inside the filter barrel.

[0020] A further improvement is that the infusion device includes an infusion pump with a cooling function, the infusion pump is arranged on the frame and connected to the liquid inlet pipe; and an infusion tube, the infusion tube connects the infusion pump and the bottom of the filter barrel.

[0021] A further improvement is that: the auxiliary device comprises an auxiliary barrel, and the auxiliary barrel is arranged on the frame;

[0022] An auxiliary layer, the auxiliary layer is arranged in the auxiliary barrel, and the auxiliary layer has a purification function;

[0023] A first auxiliary valve with a connecting pipe, wherein one end of the first auxiliary valve is connected to the auxiliary barrel and the other end is connected to the sampling device;

[0024] A second auxiliary valve with a connecting tube, one end of the second auxiliary valve is connected to the auxiliary barrel and is located below the auxiliary layer, the other end of the second auxiliary valve is connected to the liquid inlet tube, and the other end of the second auxiliary valve is arranged between the first valve and the infusion device.

[0025] A further improvement is that a pressure-adjusting liquid-following device is provided between the filter barrel and the auxiliary barrel, which is used to discharge gas when the air pressure inside the filter barrel is greater than a predetermined value to adjust the air pressure inside the filter barrel and facilitate the solution in the filter barrel to follow the gas into the auxiliary barrel when discharging the gas.

[0026] A further improvement is that the auxiliary layer is an activated carbon layer with purification and odor removal functions.

[0027] A further improvement is that: the filter barrel comprises a barrel body, and the barrel body is arranged on the frame;

[0028] A barrel cover, which is detachably disposed on the barrel body;

[0029] A fastening device, the fastening device is arranged between the barrel body and the barrel cover, the fastening device is used to fix the barrel cover to the barrel body after the barrel cover is installed on the barrel body and not to fix the barrel cover to the barrel body before the barrel cover is removed from the barrel body;

[0030] A sealing ring, the sealing ring is arranged between the barrel body and the barrel cover, and the sealing ring is used to improve the sealing between the barrel body and the barrel cover when the barrel cover is fixed to the barrel body by a fastening device;

[0031] A support plate, the support plate is arranged inside the barrel body and is arranged horizontally;

[0032] A plurality of slots, wherein the plurality of slots are equidistantly arranged on the end surface of the support plate close to the inner wall of the barrel body, and the plurality of slots are used for the solution entering from the bottom of the barrel body to enter the upper part of the support plate;

[0033] A plurality of filter cores, wherein the plurality of filter cores are equidistantly connected and arranged on the support plate and located above the support plate, the filter cores are arranged vertically, and the plurality of filter cores are used to filter the solution entering the support plate through the slots, and the filtered solution is discharged from the bottom of the support plate;

[0034] An infusion anti-mixing tray, which is arranged inside the barrel body and between the support tray and the bottom of the barrel body. The infusion anti-mixing tray is used to allow the solution entering from the bottom of the barrel body to enter the filter element only from above the support tray for filtration, and the filtered solution is directly transported to the drain pipe when it is discharged from below the support tray;

[0035] A pressing plate, which is disposed between the barrel cover and the plurality of filter elements, and is used to press the plurality of filter elements onto the supporting plate;

[0036] A plurality of springs are arranged between the pressure plate and the filter element.

[0037] A further improvement is that: a plurality of support seats are equidistantly arranged on the inner wall of the barrel body and around the axis of the barrel body, a limiting seat is arranged on the inner wall of the barrel body and directly above the support seat, and the support plate is arranged between the plurality of support seats and the plurality of limiting seats.

[0038] A further improvement is that: the end surface of the infusion anti-mixing tray away from the support tray is provided with several support columns for abutting the barrel body to improve the stability of the infusion anti-mixing tray in the barrel body, and the inner wall of the infusion anti-mixing tray is provided with several reinforcing ribs for improving the anti-deformation ability of the infusion anti-mixing tray.

[0039] After adopting the above technical scheme, the beneficial effects of the utility model are: the solution can be filtered well; the filtered solution is convenient for staff to sample, so that it is convenient for staff to detect whether the filtered solution meets the requirements; if the filtered solution does not meet the requirements, it can be filtered again. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0041] Figure 1 It is a structural schematic diagram of the utility model;

[0042] Figure 2 It corresponds to Figure 1 A schematic diagram of the structure from another perspective;

[0043] Figure 3 It is a structural schematic diagram of the filter barrel in the utility model;

[0044] Figure 4 It is a structural schematic diagram of the filter element in the utility model;

[0045] Figure 5 It is a structural schematic diagram of the support plate, slots, infusion anti-mixing plate, connecting slots, and support columns in the utility model;

[0046] Figure 6 It is a structural schematic diagram of the barrel body, the supporting seat and the limiting seat in the utility model.

[0047] Description of the accompanying drawings: frame 1, liquid inlet pipe 2, first valve (not shown in the figure), liquid discharge pipe 3, second valve (not shown in the figure), first connecting seat 4, inlet flange 5, second connecting seat 6, outlet flange 7, sampling device 8, sewage discharge device 9, detection device 10, infusion pump 11, infusion tube 12, auxiliary barrel 13, auxiliary layer 14, first auxiliary valve 15, second auxiliary valve 16, auxiliary barrel main body 17, rotating cover 18, pressure regulating liquid following device 19, barrel body 20, barrel cover 21, fastening device 22, sealing ring 23, support plate 24, slot 25, filter element 26, infusion anti-mixing plate 27, pressure plate 28, spring 29, hollow cylinder 30, limit block 31, connection block 32, flow hole 33, filter material layer 34, guide column 35, guide groove 36, connecting groove 37, support seat 38, limit seat 39, support column 40, reinforcing rib 41. DETAILED DESCRIPTION

[0048] The utility model is now further described in conjunction with the accompanying drawings and specific embodiments.

[0049] See also Figures 1 to 6 As shown, the technical solution adopted in this specific implementation is:

[0050] A filter,

[0051] It includes a frame 1, which is used to carry components and place the filter on the ground;

[0052] A filter barrel, the filter barrel is arranged on the frame 1, and the filter barrel is used to filter the solution entering from the bottom and the filtered solution is discharged from the bottom;

[0053] A liquid inlet pipe 2, the liquid inlet pipe 2 is arranged on the frame 1, and the liquid inlet pipe 2 is used to transport the solution;

[0054] An infusion device, which is disposed on the frame 1 and connects the liquid inlet pipe 2 with the bottom of the filter barrel, and is used to extract an external solution and input a predetermined amount of the external solution into the filter barrel through the liquid inlet pipe 2;

[0055] a first valve (not shown in the figure), which is disposed on the liquid inlet pipe 2, and is used to open when the infusion device extracts the external solution, and to close after the infusion device inputs a predetermined amount of the external solution into the filter barrel through the liquid inlet pipe 2;

[0056] A drain pipe 3, which is disposed on the frame 1 and is connected to the bottom of the filter barrel, and is used to transport the solution filtered by the filter barrel;

[0057] A sampling device 8, the sampling device 8 is connected to the drainage pipe 3, and the sampling device 8 is used to facilitate the staff to sample the solution filtered by the filter barrel when the drainage pipe 3 transports the solution filtered by the filter barrel, so as to facilitate the staff to detect whether the solution filtered by the filter barrel meets the predetermined requirements;

[0058] A second valve (not shown in the figure), which is arranged on the drain pipe 3, and is used to close before the staff detects that the solution filtered through the filter barrel meets the predetermined requirements, and to open after the staff detects that the solution filtered through the filter barrel meets the predetermined requirements;

[0059] An auxiliary device, the auxiliary device is arranged on the frame 1, one end of the auxiliary device is connected to the sampling device, the other end of the auxiliary device is connected to the liquid inlet pipe 2, and the other end of the auxiliary device is arranged between the first valve (not shown in the figure) and the infusion device. The auxiliary device is used to purify the solution filtered by the filter barrel in the discharge pipe 3 and transport it to the liquid inlet pipe 2 when the staff detects that the solution filtered by the filter barrel does not meet the predetermined requirements;

[0060] The infusion device is also used to input the solution filtered by the filter barrel into the filter barrel when the auxiliary device transports the solution filtered by the filter barrel in the discharge pipe 3 to the inlet pipe 2.

[0061] The liquid inlet pipe 2 is arranged on the frame 1 through a first connecting seat 4, and an inlet flange 5 is arranged on the liquid inlet pipe 2; the liquid discharge pipe 3 is arranged on the frame 1 through a second connecting seat 6, and an outlet flange 7 is arranged on the liquid discharge pipe 3; the sampling device 8 is a sampling valve with a connecting pipe.

[0062] It also includes a sewage discharge device 9, which is connected to the bottom of the filter barrel and is used to open when the filter barrel is discharging sewage and close when the filter barrel is not discharging sewage; the sewage discharge device 9 is a sewage discharge valve with a connecting pipe.

[0063] It also includes a detection device 10, which is arranged on the filter barrel and is used to detect the air pressure value inside the filter barrel; the detection device 10 is a pressure gauge with a connecting pipe.

[0064] The infusion device includes an infusion pump 11 with a cooling function, which is arranged on the frame 1 and connected to the liquid inlet pipe 2; an infusion pipe 12, which connects the infusion pump 11 with the bottom of the filter barrel; the infusion pump 11 is a magnetic pump or a self-priming pump or a chemical pump or other, and the motor of the infusion pump 11 is a variable frequency permanent magnet motor.

[0065] The auxiliary device includes an auxiliary barrel 13, and the auxiliary barrel 13 is arranged on the frame 1;

[0066] An auxiliary layer 14, wherein the auxiliary layer 14 is disposed in the auxiliary barrel 13, and the auxiliary layer 14 has a purification function;

[0067] A first auxiliary valve 15 with a connecting pipe, one end of the first auxiliary valve 15 is connected to the auxiliary barrel 13 and the other end is connected to the sampling device 8;

[0068] A second auxiliary valve 16 with a connecting tube, one end of the second auxiliary valve 16 is connected to the auxiliary barrel 13 and is located below the auxiliary layer 14, the other end of the second auxiliary valve 16 is connected to the liquid inlet pipe 2, and the other end of the second auxiliary valve 16 is arranged between the first valve (not shown in the figure) and the infusion device.

[0069] The auxiliary barrel 13 includes an auxiliary barrel body 17 disposed on the frame 1 and a rotating cover 18 rotatably disposed on the auxiliary barrel body 17 and capable of rotating to a predetermined position when subjected to a predetermined external force.

[0070] A pressure-adjusting liquid-following device 19 is provided between the filter barrel and the auxiliary barrel 13 for discharging gas when the air pressure inside the filter barrel is greater than a predetermined value to adjust the air pressure inside the filter barrel and facilitate the solution in the filter barrel to follow the gas into the auxiliary barrel 13 when discharging the gas.

[0071] The pressure-regulating and liquid-following device 19 is a pressure-regulating and liquid-following valve with a connecting pipe disposed between the filter barrel and the auxiliary barrel 13 .

[0072] The auxiliary layer 14 is an activated carbon layer having a purification function and an odor removal function.

[0073] The filter barrel comprises a barrel body 20, and the barrel body 20 is arranged on the frame 1;

[0074] A barrel cover 21, wherein the barrel cover 21 is detachably disposed on the barrel body 20;

[0075] A fastening device 22, the fastening device 22 is arranged between the barrel body 20 and the barrel cover 21, and the fastening device 22 is used to fix the barrel cover 21 to the barrel body 20 after the barrel cover 21 is installed on the barrel body 20 and not to fix the barrel cover 21 to the barrel body 20 before the barrel cover 21 is removed from the barrel body 20;

[0076] A sealing ring 23, wherein the sealing ring 23 is disposed between the barrel body 20 and the barrel cover 21, and the sealing ring 23 is used to improve the sealing between the barrel body 20 and the barrel cover 21 when the fastening device 22 fixes the barrel cover 21 to the barrel body 20;

[0077] A support plate 24, wherein the support plate 24 is disposed inside the barrel body 20 and is disposed horizontally;

[0078] A plurality of slots 25, wherein the plurality of slots 25 are equidistantly arranged on the end surface of the support plate 24 close to the inner wall of the barrel body 20, and the plurality of slots 25 are used for the solution entering from the bottom of the barrel body 20 to enter the upper part of the support plate 24;

[0079] A plurality of filter cores 26, wherein the plurality of filter cores 26 are equidistantly connected and arranged on the support plate 24 and are located above the support plate 24, and the filter cores 26 are arranged vertically, and the plurality of filter cores 26 are used to filter the solution entering the support plate 24 through the slots 25, and the filtered solution is discharged from the bottom of the support plate 24;

[0080] The infusion anti-mixing disk 27 is arranged inside the barrel body 20 and between the support disk 24 and the bottom of the barrel body 20. The infusion anti-mixing disk 27 is used to allow the solution entering from the bottom of the barrel body 20 to enter the filter element 26 only from above the support disk 24 for filtration, and the filtered solution is directly transported to the drain pipe 3 when it is discharged from the bottom of the support disk 24;

[0081] A pressing plate 28, the pressing plate 28 is disposed between the barrel cover 21 and the plurality of filter elements 26, and the pressing plate 28 is used to press the plurality of filter elements 26 onto the supporting plate 24;

[0082] A plurality of springs 29 are disposed between the pressure plate 28 and the filter element 26 .

[0083] A plurality of filter elements 26 are arranged on the support plate 24 in a matrix array or a plurality of filter elements 26 are arranged on the support plate 24 in a circle with the center of the upper surface of the support plate 24 as the center; the number of filter elements 26 is 36 or other number.

[0084] The filter element 26 includes a hollow cylinder 30 that is connected to the support plate 24 at the end face close to the support plate 24 and is closed at the end face away from the support plate 24, a limit block 31 provided outside the end of the hollow cylinder 30 close to the support plate 24 for cooperating with the support plate 24, a connecting block 32 provided at the end of the hollow cylinder 30 away from the support plate 24 for cooperating with the spring 29, a plurality of flow holes 33 opened on the hollow cylinder 30 and located between the limit block 31 and the connecting block 32, and a filter material layer 34 provided between the limit block 31 and the connecting block 32 and located outside the hollow cylinder 30; the hollow cylinder 30 is located above the support plate 24 and is vertically arranged. The filter material layer 34 is a PP cotton filter element or a melt-blown non-woven fabric or other

[0085] The support plate 24 is provided with a plurality of vertically arranged guide posts 35, and the pressure plate 28 is provided with guide grooves 36 that cooperate with the guide posts 35. The infusion anti-mixing plate 27 is detachably connected to the support plate 24, and the infusion anti-mixing plate 27 is detachably connected to the bottom of the barrel body 20. The end surface of the support plate 24 close to the infusion anti-mixing plate 27 is provided with a connection groove 37 for cooperating with the upper end of the infusion anti-mixing plate 27, and the infusion anti-mixing plate 27 is threadedly connected to the bottom of the barrel body 20.

[0086] A plurality of support seats 38 are equidistantly arranged on the inner wall of the barrel body 20 and around the axis of the barrel body 20 . A limiting seat 39 is arranged on the inner wall of the barrel body 20 and directly above the support seat 38 . The support plate 24 is arranged between the plurality of support seats 38 and the plurality of limiting seats 39 .

[0087] The support plate 24 cooperates with the plurality of slots 25 and the plurality of limit seats 39 so that the support plate 24 can be loaded and unloaded between the plurality of support seats 38 and the plurality of limit seats 39 .

[0088] The end surface of the infusion anti-mixing tray 27 away from the support tray 24 is provided with several support columns 40 for abutting the barrel body 20 to improve the stability of the infusion anti-mixing tray 27 in the barrel body 20, and the inner wall of the infusion anti-mixing tray 27 is provided with several reinforcing ribs 41 for improving the anti-deformation ability of the infusion anti-mixing tray 27.

[0089] The working principle of the utility model is as follows: the frame 1 is used to carry the components and place the filter on the ground; the filter barrel is used to filter the solution entering from the bottom and the filtered solution is discharged from the bottom; the liquid inlet pipe 2 is used to transport the solution; the infusion device is used to extract the external solution and input a predetermined amount of the external solution into the filter barrel through the liquid inlet pipe 2; the first valve (not shown in the figure) is used to open when the infusion device extracts the external solution and close after the infusion device inputs a predetermined amount of the external solution into the filter barrel through the liquid inlet pipe 2; the discharge pipe 3 is used to transport the solution filtered by the filter barrel; the sampling device 8 is used to facilitate the staff to sample the solution when the discharge pipe 3 transports the solution filtered by the filter barrel The solution filtered by the filter barrel is sampled so that the staff can detect whether the solution filtered by the filter barrel meets the predetermined requirements. The second valve (not shown in the figure) is used to close before the staff detects that the solution filtered by the filter barrel meets the predetermined requirements, and open after the staff detects that the solution filtered by the filter barrel meets the predetermined requirements. The auxiliary device is used to purify the solution filtered by the filter barrel in the discharge pipe 3 and transport it to the inlet pipe 2 when the staff detects that the solution filtered by the filter barrel does not meet the predetermined requirements. The infusion device is also used to input the solution filtered by the filter barrel into the filter barrel when the auxiliary device transports the solution filtered by the filter barrel in the discharge pipe 3 to the inlet pipe 2.

[0090] The contents not described in detail in the utility model specification belong to the prior art known to those skilled in the art. The utility model is to protect the structure of the product, and the model of each component is not the content of the utility model protection, which is also the prior art known to those skilled in the art. Any component on the market that can achieve the above functions of the utility model can be selected and applied.

[0091] The basic principles, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.

Claims

1. A filter, characterized in that: It includes a frame, which is used to carry components and place the filter on the ground; A filter barrel, the filter barrel is arranged on the frame, and the filter barrel is used to filter the solution entering from the bottom and discharge the filtered solution from the bottom; A liquid inlet pipe, which is arranged on the frame and is used to transport the solution; An infusion device, which is disposed on the frame and connected to the liquid inlet pipe and the bottom of the filter barrel, and is used to extract an external solution and input a predetermined amount of the external solution into the filter barrel through the liquid inlet pipe; a first valve, the first valve being arranged on the liquid inlet pipe, the first valve being used to open when the infusion device extracts the external solution, and to close after the infusion device inputs a predetermined amount of the external solution into the filter barrel through the liquid inlet pipe; A drain pipe, which is disposed on the frame and communicated with the bottom of the filter barrel, and is used to transport the solution filtered by the filter barrel; A sampling device, the sampling device is connected to the drainage pipe, and the sampling device is used to facilitate the staff to sample the solution filtered by the filter barrel when the drainage pipe transports the solution filtered by the filter barrel, so as to facilitate the staff to detect whether the solution filtered by the filter barrel meets the predetermined requirements; A second valve, the second valve is arranged on the liquid discharge pipe, the second valve is used to close before the staff detects that the solution filtered through the filter barrel meets the predetermined requirements, and to open after the staff detects that the solution filtered through the filter barrel meets the predetermined requirements; An auxiliary device, the auxiliary device is arranged on the frame, one end of the auxiliary device is connected to the sampling device, the other end of the auxiliary device is connected to the liquid inlet pipe, the other end of the auxiliary device is arranged between the first valve and the infusion device, and the auxiliary device is used to purify the solution filtered by the filter barrel in the discharge pipe and transport it to the liquid inlet pipe when the staff detects that the solution filtered by the filter barrel does not meet the predetermined requirements; The infusion device is also used for inputting the solution filtered by the filter barrel into the filter barrel when the auxiliary device transports the solution filtered by the filter barrel in the discharge pipe to the inlet pipe.

2. A filter according to claim 1, characterized in that: It also includes a sewage discharge device, which is connected to the bottom of the filter barrel and is used to open when the filter barrel is discharging sewage, and close when the filter barrel is not discharging sewage.

3. A filter according to claim 1, characterized in that: It also includes a detection device, which is arranged on the filter barrel and is used to detect the air pressure value inside the filter barrel.

4. A filter according to claim 1, characterized in that: The infusion device comprises an infusion pump with a cooling function, the infusion pump is arranged on the frame and connected with the liquid inlet pipe; and an infusion pipe, the infusion pipe connects the infusion pump and the bottom of the filter barrel.

5. A filter according to claim 1, characterized in that: The auxiliary device comprises an auxiliary barrel, and the auxiliary barrel is arranged on the frame; An auxiliary layer, the auxiliary layer is arranged in the auxiliary barrel, and the auxiliary layer has a purification function; A first auxiliary valve with a connecting pipe, wherein one end of the first auxiliary valve is connected to the auxiliary barrel and the other end is connected to the sampling device; A second auxiliary valve with a connecting tube, one end of the second auxiliary valve is connected to the auxiliary barrel and is located below the auxiliary layer, the other end of the second auxiliary valve is connected to the liquid inlet tube, and the other end of the second auxiliary valve is arranged between the first valve and the infusion device.

6. A filter according to claim 5, characterized in that: A pressure-adjusting liquid-following device is provided between the filter barrel and the auxiliary barrel, which is used to discharge gas when the air pressure inside the filter barrel is greater than a predetermined value to adjust the air pressure inside the filter barrel and facilitate the solution in the filter barrel to follow the gas into the auxiliary barrel when discharging the gas.

7. A filter according to claim 6, characterized in that: The auxiliary layer is an activated carbon layer with purification and odor removal functions.

8. A filter according to claim 1, characterized in that: The filter barrel comprises a barrel body, and the barrel body is arranged on the frame; A barrel cover, which is detachably disposed on the barrel body; A fastening device, the fastening device is arranged between the barrel body and the barrel cover, the fastening device is used to fix the barrel cover to the barrel body after the barrel cover is installed on the barrel body and not to fix the barrel cover to the barrel body before the barrel cover is removed from the barrel body; A sealing ring, the sealing ring is arranged between the barrel body and the barrel cover, and the sealing ring is used to improve the sealing between the barrel body and the barrel cover when the barrel cover is fixed to the barrel body by a fastening device; A support plate, the support plate is arranged inside the barrel body and is arranged horizontally; A plurality of slots, wherein the plurality of slots are equidistantly arranged on the end surface of the support plate close to the inner wall of the barrel body, and the plurality of slots are used for the solution entering from the bottom of the barrel body to enter the upper part of the support plate; A plurality of filter cores, wherein the plurality of filter cores are equidistantly connected and arranged on the support plate and located above the support plate, the filter cores are arranged vertically, and the plurality of filter cores are used to filter the solution entering the support plate through the slots, and the filtered solution is discharged from the bottom of the support plate; An infusion anti-mixing tray, which is arranged inside the barrel body and between the support tray and the bottom of the barrel body. The infusion anti-mixing tray is used to allow the solution entering from the bottom of the barrel body to enter the filter element only from above the support tray for filtration, and the filtered solution is directly transported to the drain pipe when it is discharged from below the support tray; A pressing plate, which is disposed between the barrel cover and the plurality of filter elements, and is used to press the plurality of filter elements onto the supporting plate; A plurality of springs are arranged between the pressure plate and the filter element.

9. A filter according to claim 8, characterized in that: A plurality of support seats are equidistantly arranged on the inner wall of the barrel body and around the axis of the barrel body, a limiting seat is arranged on the inner wall of the barrel body and directly above the support seat, and the support plate is arranged between the plurality of support seats and the plurality of limiting seats.

10. A filter according to claim 9, characterized in that: The end surface of the infusion anti-mixing tray away from the support tray is provided with several support columns for abutting the barrel body to improve the stability of the infusion anti-mixing tray in the barrel body, and the inner wall of the infusion anti-mixing tray is provided with several reinforcing ribs for improving the anti-deformation ability of the infusion anti-mixing tray.

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