Double-barrel filter

Abstract

The utility model provides a double-barrel filter which comprises a rack, a first filter barrel with a filter material, a second filter barrel with a filter material, a third filter barrel with a filter material, a third filter barrel with a filter material, a fourth filter barrel with a filter material, a fourth filter barrel with a filter material, a fifth filter barrel with a filter material, a fifth filter barrel with a filter material, a sixth filter barrel with a filter material, a fifth filter barrel with a filter material and a sixth filter material, wherein the rack is used for bearing parts and enabling the double-barrel filter to be placed on the ground; the first filtering barrel is arranged on the rack, the second filtering barrel is arranged on the rack and located on one side of the first filtering barrel, the second filtering barrel is used for filtering a solution, the inlet pipe is arranged on the rack and used for conveying the solution when the double-barrel filter works, the first connecting pipe is arranged on the rack, and the second connecting pipe is arranged on the rack and used for conveying the solution when the double-barrel filter works. One end of the first connecting pipe is arranged on the first filtering barrel in a communicating manner, and the first connecting pipe is used for enabling a solution in an inlet pipe to enter the first filtering barrel; the filter material can be replaced when the filter works, the filter material can be replaced without shutdown, and the use requirements can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, and particularly relates to a double-barrel filter. Background Art

[0002] A filter is a machine that separates solid and liquid by filtering a solution containing solid impurities, and is widely used in the fields of electroplating, chemical industry, pharmaceuticals, etc.

[0003] The existing filters cannot replace the filter media during operation and need to stop the machine to replace the filter media, which cannot meet the usage requirements. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a double-barrel filter aiming at the defects and deficiencies of the existing technology.

[0005] To achieve the above purpose, the following technical solutions are adopted in the utility model:

[0006] A double-barrel filter,

[0007] including a frame, which is used to carry components and place the double-barrel filter on the ground;

[0008] A first filter barrel with filter media, which is arranged on the frame and is used to filter the solution;

[0009] A second filter barrel with filter media, which is arranged on the frame and on one side of the first filter barrel, and is used to filter the solution;

[0010] An inlet pipe, which is arranged on the frame and is used to convey the solution when the double-barrel filter is working;

[0011] A first connecting pipe, one end of which is communicated and arranged on the first filter barrel, and is used for the solution in the inlet pipe to enter the first filter barrel;

[0012] A first valve, which is arranged on the first connecting pipe and is used to control whether the solution in the first connecting pipe enters the first filter barrel or not;

[0013] A second connecting pipe, one end of which is communicated and arranged on the second filter barrel, and is used for the solution in the inlet pipe to enter the second filter barrel;

[0014] A second valve, which is arranged on the second connecting pipe and is used to control whether the solution in the second connecting pipe enters the second filter barrel or not;

[0015] A conveying device, which is arranged on the frame. The inlet end of the conveying device is communicated with the inlet pipe, and the outlet end of the conveying device is simultaneously communicated with the other end of the first connecting pipe and the other end of the second connecting pipe. The conveying device is used to convey the solution in the inlet pipe to the other end of the first connecting pipe and the other end of the second connecting pipe;

[0016] An outlet pipe, which is arranged on the frame and is used to convey the filtered solution;

[0017] A first connecting pipe, one end of which is communicated with the first filter barrel, and the first connecting pipe is used for the solution filtered by the first filter barrel to enter the outlet pipe;

[0018] A second connecting pipe, one end of which is communicated with the second filter barrel, and the second connecting pipe is used for the solution filtered by the second filter barrel to enter the outlet pipe;

[0019] A control valve, which is arranged among the other end of the first connecting pipe, the other end of the second connecting pipe and the outlet pipe. The control valve is used to control only the solution filtered by the first filter barrel in the first connecting pipe to enter the outlet pipe, or the control valve is used to control only the solution filtered by the second filter barrel in the second connecting pipe to enter the outlet pipe, or the control valve is used to control the solution filtered by the first filter barrel in the first connecting pipe and the solution filtered by the second filter barrel in the second connecting pipe to enter the outlet pipe simultaneously;

[0020] When the double-barrel filter is working and the filter material in the second filter barrel is replaced, the first valve controls the solution in the first connecting pipe to enter the first filter barrel, the second valve controls the solution in the second connecting pipe not to enter the second filter barrel, and the control valve controls only the solution filtered by the first filter barrel in the first connecting pipe to enter the outlet pipe;

[0021] When the double-barrel filter is working and the filter material in the first filter barrel is replaced, the first valve controls the solution in the first connecting pipe not to enter the first filter barrel, the second valve controls the solution in the second connecting pipe to enter the second filter barrel, and the control valve controls only the solution filtered by the second filter barrel in the second connecting pipe to enter the outlet pipe.

[0022] Further improvement is:

[0023] It further includes a first sewage discharge device, which is communicated with the bottom of the first filter barrel. The first sewage discharge device is used to be opened when the first filter barrel discharges sewage and closed when the first filter barrel does not discharge sewage.

[0024] Further improvement is:

[0025] It further includes a second sewage discharge device, which is connected and arranged at the bottom of the second filter barrel. The second sewage discharge device is used to be opened when the second filter barrel discharges sewage and to be closed when the second filter barrel does not discharge sewage.

[0026] Further improvement is:

[0027] The conveying device includes a one-inlet two-outlet joint. The outlets of the one-inlet two-outlet joint are simultaneously connected and arranged with the other ends of the first connecting pipe and the second connecting pipe. A conveying pump is arranged on the frame, and the conveying pump connects the inlet pipe and the one-inlet two-outlet joint.

[0028] Further improvement is:

[0029] It further includes an auxiliary barrel, which is arranged on the frame;

[0030] A first pressure-regulating liquid discharging device is connected and arranged between the first filter barrel and the auxiliary barrel. The first pressure-regulating liquid discharging device is used to discharge gas to regulate the air pressure value inside the first filter barrel when the air pressure value inside the first filter barrel is greater than a predetermined value and to facilitate the solution inside the first filter barrel to enter the auxiliary barrel along with the gas when discharging the gas;

[0031] A second pressure-regulating liquid discharging device is connected and arranged between the second filter barrel and the auxiliary barrel. The second pressure-regulating liquid discharging device is used to discharge gas to regulate the air pressure value inside the second filter barrel when the air pressure value inside the second filter barrel is greater than a predetermined value and to facilitate the solution inside the second filter barrel to enter the auxiliary barrel along with the gas when discharging the gas;

[0032] An auxiliary layer is arranged inside the auxiliary barrel. The auxiliary layer is used to purify the solution that enters the auxiliary barrel through the first pressure-regulating liquid discharging device and / or the second pressure-regulating liquid discharging device;

[0033] An auxiliary pipe has one end connected and arranged with the auxiliary barrel and the other end connected and arranged with the inlet pipe. The auxiliary pipe is used for the solution purified by the auxiliary layer to enter the inlet pipe;

[0034] An auxiliary valve is arranged on the auxiliary pipe. The auxiliary valve is used to control the solution inside the auxiliary pipe to enter the inlet pipe when the double-barrel filter works and to control the solution inside the auxiliary pipe not to enter the inlet pipe when the double-barrel filter does not work.

[0035] Further improvement is: The auxiliary layer is an activated carbon layer with a purification treatment function and an odor removal function.

[0036] Further improvements are as follows: The first pressure-regulating and liquid-draining device includes a first pressure-regulating and liquid-draining pipe with a valve, and the first pressure-regulating and liquid-draining pipe is communicatively arranged between the first filter barrel and the auxiliary barrel; a first pressure gauge, and the first pressure gauge is arranged on the first pressure-regulating and liquid-draining pipe and between the first filter barrel and the valve of the first pressure-regulating and liquid-draining pipe.

[0037] Further improvements are as follows: The second pressure-regulating and liquid-draining device includes a second pressure-regulating and liquid-draining pipe with a valve, and the second pressure-regulating and liquid-draining pipe is communicatively arranged between the second filter barrel and the auxiliary barrel; a second pressure gauge, and the second pressure gauge is arranged on the second pressure-regulating and liquid-draining pipe and between the second filter barrel and the valve of the second pressure-regulating and liquid-draining pipe.

[0038] Further improvements are as follows:

[0039] It further includes a linkage pipe. One end of the linkage pipe is communicatively arranged on the second filter barrel, and the other end is communicatively arranged on the first connecting pipe. The linkage pipe is used for the solution filtered by the first filter barrel to enter the second filter barrel;

[0040] A third valve, and the third valve is used to control whether the solution filtered by the first filter barrel in the linkage pipe enters the second filter barrel or not;

[0041] When the double-barrel filter is working and the filter media in the second filter barrel or the first filter barrel is replaced, the third valve controls that the solution filtered by the first filter barrel in the linkage pipe does not enter the second filter barrel;

[0042] When the double-barrel filter is working and the filter media in the second filter barrel or / and the first filter barrel is not replaced, the first valve controls the solution in the first connecting pipe to enter the first filter barrel, the second valve controls the solution in the second connecting pipe not to enter the second filter barrel, the third valve controls the solution filtered by the first filter barrel in the linkage pipe to enter the second filter barrel, and the control valve controls that only the solution filtered by the second filter barrel in the second connecting pipe enters the outlet pipe;

[0043] When the double-barrel filter is working and the filter media in the second filter barrel or / and the first filter barrel is not replaced, the first valve controls the solution in the first connecting pipe to enter the first filter barrel, the second valve controls the solution in the second connecting pipe to enter the second filter barrel, the third valve controls the solution filtered by the first filter barrel in the linkage pipe not to enter the second filter barrel, and the control valve is used to control the solution filtered by the first filter barrel in the first connecting pipe and the solution filtered by the second filter barrel in the second connecting pipe to enter the outlet pipe simultaneously.

[0044] Further improvements are as follows: Several supporting plates are arranged between the inlet pipe and the frame; a supporting bracket is arranged between the outlet pipe and the frame.

[0045] After adopting the above technical solution, the beneficial effects of the present utility model are as follows: When the filter is working, the filter medium can be replaced without stopping the machine, which can meet the usage requirements. Description of the Drawings

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0047] Figure 1 It is a structural schematic diagram of the present utility model;

[0048] Figure 2 corresponding to Figure 1 a structural schematic diagram of another perspective;

[0049] Figure 3 corresponding to Figure 1 a structural schematic diagram of another perspective with some components hidden;

[0050] Figure 4 corresponding to Figure 1 a structural schematic diagram of another perspective with some components hidden.

[0051] Description of the reference numerals in the drawings: Frame 1, first filter barrel 2, second filter barrel 3, inlet pipe 4, first connecting pipe 5, first valve 6, second connecting pipe 7, second valve 8, outlet pipe 9, first connecting pipe 10, second connecting pipe 11, control valve 12, first sewage discharge device 13, second sewage discharge device 14, one-inlet two-outlet joint 15, delivery pump 16, auxiliary barrel 17, auxiliary layer 18, auxiliary pipe 19, auxiliary valve 20, first pressure-regulating drain pipe 21, first pressure gauge 22, second pressure-regulating drain pipe 23, second pressure gauge 24, linkage pipe 25, third valve 26, supporting plate 27, supporting bracket 28. Detailed Embodiments

[0052] The present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0053] Refer to Figures 1 to 4 shown, the technical solution adopted in this specific embodiment is as follows:

[0054] A double-barrel filter, including a frame 1, and the frame 1 is used to carry components and place the double-barrel filter on the ground;

[0055] The first filter bucket 2 with filter media is provided on the frame 1 and is used to filter the solution;

[0056] The second filter bucket 3 with filter media is provided on the frame 1 and is located on one side of the first filter bucket 2, and the second filter bucket 3 is used to filter the solution;

[0057] The inlet pipe 4 is provided on the frame 1 and is used to convey the solution when the double - bucket filter works;

[0058] One end of the first connecting pipe 5 is connected and provided on the first filter bucket 2, and the first connecting pipe 5 is used for the solution in the inlet pipe 4 to enter the first filter bucket 2;

[0059] The first valve 6 is provided on the first connecting pipe 5, and the first valve 6 is used to control whether the solution in the first connecting pipe 5 enters the first filter bucket 2 or not;

[0060] One end of the second connecting pipe 7 is connected and provided on the second filter bucket 3, and the second connecting pipe 7 is used for the solution in the inlet pipe 4 to enter the second filter bucket 3;

[0061] The second valve 8 is provided on the second connecting pipe 7, and the second valve 8 is used to control whether the solution in the second connecting pipe 7 enters the second filter bucket 3 or not;

[0062] The conveying device is provided on the frame 1. The inlet end of the conveying device is connected and provided with the inlet pipe 4, and the outlet end of the conveying device is simultaneously connected and provided with the other end of the first connecting pipe 5 and the other end of the second connecting pipe 7. The conveying device is used to convey the solution in the inlet pipe 4 to the other end of the first connecting pipe 5 and the other end of the second connecting pipe 7;

[0063] The outlet pipe 9 is provided on the frame 1 and is used to convey the filtered solution;

[0064] One end of the first connecting pipe 10 is connected and provided on the first filter bucket 2, and the first connecting pipe 10 is used for the solution filtered by the first filter bucket 2 to enter the outlet pipe 9;

[0065] One end of the second connecting pipe 11 is connected and provided on the second filter bucket 3, and the second connecting pipe 11 is used for the solution filtered by the second filter bucket 3 to enter the outlet pipe 9;

[0066] Control valve 12 is arranged among the other end of the first connecting pipe 10, the other end of the second connecting pipe 11, and the outlet pipe 9. The control valve 12 is used to control only the solution filtered by the first filter barrel 2 in the first connecting pipe 10 to enter the outlet pipe 9, or the control valve 12 is used to control only the solution filtered by the second filter barrel 3 in the second connecting pipe 11 to enter the outlet pipe 9, or the control valve 12 is used to control the solution filtered by the first filter barrel 2 in the first connecting pipe 10 and the solution filtered by the second filter barrel 3 in the second connecting pipe 11 to enter the outlet pipe 9 simultaneously;

[0067] When the double-barrel filter is working and the filter material in the second filter barrel 3 is replaced, the first valve 6 controls the solution in the first connecting pipe 5 to enter the first filter barrel 2, the second valve 8 controls the solution in the second connecting pipe 7 not to enter the second filter barrel 3, and the control valve 12 controls only the solution filtered by the first filter barrel 2 in the first connecting pipe 10 to enter the outlet pipe 9;

[0068] When the double-barrel filter is working and the filter material in the first filter barrel 2 is replaced, the first valve 6 controls the solution in the first connecting pipe 5 not to enter the first filter barrel 2, the second valve 8 controls the solution in the second connecting pipe 7 to enter the second filter barrel 3, and the control valve 12 controls only the solution filtered by the second filter barrel 3 in the second connecting pipe 11 to enter the outlet pipe 9.

[0069] The control valve 12 is a two-in-one-out solenoid valve; the filter material of the first filter barrel 2 can be filter paper or filter element or others, and the filter material of the second filter barrel 3 can be filter paper or filter element or others.

[0070] It further includes a first sewage discharge device 13, which is connected and arranged at the bottom of the first filter barrel 2. The first sewage discharge device 13 is used to open when the first filter barrel 2 discharges sewage and close when the first filter barrel 2 does not discharge sewage. The first sewage discharge device 13 is a first sewage discharge valve with a connecting pipe.

[0071] It further includes a second sewage discharge device 14, which is connected and arranged at the bottom of the second filter barrel 3. The second sewage discharge device 14 is used to open when the second filter barrel 3 discharges sewage and close when the second filter barrel 3 does not discharge sewage. The second sewage discharge device 14 is a second sewage discharge valve with a connecting pipe.

[0072] The conveying device includes a one-in-two-out joint 15. The outlet ends of the one-in-two-out joint 15 are simultaneously connected and arranged with the other end of the first connecting pipe 5 and the other end of the second connecting pipe 7. A conveying pump 16 is arranged on the frame 1, and the conveying pump 16 connects the inlet pipe 4 and the one-in-two-out joint 15.

[0073] It further includes an auxiliary barrel 17, which is arranged on the frame 1;

[0074] The first pressure-regulating and liquid-draining device is connected between the first filter barrel 2 and the auxiliary barrel 17. The first pressure-regulating and liquid-draining device is used to discharge gas when the air pressure value inside the first filter barrel 2 is greater than a predetermined value to regulate the air pressure value inside the first filter barrel 2 and facilitate the solution inside the first filter barrel 2 to enter the auxiliary barrel 17 following the gas when discharging the gas;

[0075] The second pressure-regulating and liquid-draining device is connected between the second filter barrel 3 and the auxiliary barrel 17. The second pressure-regulating and liquid-draining device is used to discharge gas when the air pressure value inside the second filter barrel 3 is greater than a predetermined value to regulate the air pressure value inside the second filter barrel 3 and facilitate the solution inside the second filter barrel 3 to enter the auxiliary barrel 17 following the gas when discharging the gas;

[0076] The auxiliary layer 18 is arranged inside the auxiliary barrel 17. The auxiliary layer 18 is used to purify the solution entering the auxiliary barrel 17 through the first pressure-regulating and liquid-draining device and / or the second pressure-regulating and liquid-draining device;

[0077] The auxiliary pipe 19 is connected at one end to the auxiliary barrel 17 and at the other end to the inlet pipe 4. The auxiliary pipe 19 is used to allow the solution purified by the auxiliary layer 18 to enter the inlet pipe 4;

[0078] The auxiliary valve 20 is arranged on the auxiliary pipe 19. The auxiliary valve 20 is used to control the solution inside the auxiliary pipe 19 to enter the inlet pipe 4 when the double-barrel filter is working and control the solution inside the auxiliary pipe 19 not to enter the inlet pipe 4 when the double-barrel filter is not working.

[0079] The auxiliary layer 18 is an activated carbon layer with a purification treatment function and an odor removal function.

[0080] The first pressure-regulating and liquid-draining device includes a first pressure-regulating and liquid-draining pipe 21 with a valve. The first pressure-regulating and liquid-draining pipe 21 is connected between the first filter barrel 2 and the auxiliary barrel 17; the first pressure gauge 22 is arranged on the first pressure-regulating and liquid-draining pipe 21 and is located between the first filter barrel 2 and the valve of the first pressure-regulating and liquid-draining pipe 21.

[0081] The second pressure-regulating and liquid-draining device includes a second pressure-regulating and liquid-draining pipe 23 with a valve. The second pressure-regulating and liquid-draining pipe 23 is connected between the second filter barrel 3 and the auxiliary barrel 17; the second pressure gauge 24 is arranged on the second pressure-regulating and liquid-draining pipe 23 and is located between the second filter barrel 3 and the valve of the second pressure-regulating and liquid-draining pipe 23.

[0082] It further includes a linkage pipe 25. One end of the linkage pipe 25 is connected to the second filter barrel 3 and the other end is connected to the first connecting pipe 10. The linkage pipe 25 is used to allow the solution filtered by the first filter barrel 2 to enter the second filter barrel 3;

[0083] The third valve 26 is used to control whether the solution filtered by the first filter barrel 2 in the linkage pipe 25 enters the second filter barrel 3 or not.

[0084] When the double-barrel filter is working and the filter media in the second filter barrel 3 or the first filter barrel 2 is replaced, the third valve 26 controls that the solution filtered by the first filter barrel 2 in the linkage pipe 25 does not enter the second filter barrel 3.

[0085] When the double-barrel filter is working and the filter media in the second filter barrel 3 or / and the first filter barrel 2 is not replaced, the first valve 6 controls the solution in the first connecting pipe 5 to enter the first filter barrel 2, the second valve 8 controls the solution in the second connecting pipe 7 not to enter the second filter barrel 3, the third valve 26 controls the solution filtered by the first filter barrel 2 in the linkage pipe 25 to enter the second filter barrel 3, and the control valve 12 controls that only the solution filtered by the second filter barrel 3 in the second connecting pipe 11 enters the outlet pipe 9.

[0086] When the double-barrel filter is working and the filter media in the second filter barrel 3 or / and the first filter barrel 2 is not replaced, the first valve 6 controls the solution in the first connecting pipe 5 to enter the first filter barrel 2, the second valve 8 controls the solution in the second connecting pipe 7 to enter the second filter barrel 3, the third valve 26 controls the solution filtered by the first filter barrel 2 in the linkage pipe 25 not to enter the second filter barrel 3, and the control valve 12 is used to control the solution filtered by the first filter barrel 2 in the first connecting pipe 10 and the solution filtered by the second filter barrel 3 in the second connecting pipe 11 to enter the outlet pipe 9 simultaneously.

[0087] Several supporting plates 27 are arranged between the inlet pipe 4 and the frame 1; a supporting bracket 28 is arranged between the outlet pipe 9 and the frame 1.

[0088] The valves in the double-barrel filter can be solenoid valves or others.

[0089] Working principle of the utility model: The frame 1 is used to carry components and place the double-barrel filter on the ground. The first filter barrel 2 is used to filter the solution. The second filter barrel 3 is used to filter the solution. The inlet pipe 4 is used to convey the solution when the double-barrel filter is working. The first connecting pipe 5 is used for the solution in the inlet pipe 4 to enter the first filter barrel 2. The first valve 6 is used to control whether the solution in the first connecting pipe 5 enters the first filter barrel 2 or not. The second connecting pipe 7 is used for the solution in the inlet pipe 4 to enter the second filter barrel 3. The second valve 8 is used to control whether the solution in the second connecting pipe 7 enters the second filter barrel 3 or not. The conveying device is used to convey the solution in the inlet pipe 4 to the other ends of the first connecting pipe 5 and the second connecting pipe 7. The outlet pipe 9 is used to convey the filtered solution. The first connecting pipe 10 is used for the solution filtered by the first filter barrel 2 to enter the outlet pipe 9. The second connecting pipe 11 is used for the solution filtered by the second filter barrel 3 to enter the outlet pipe 9. The control valve 12 is used to control only the solution filtered by the first filter barrel 2 in the first connecting pipe 10 to enter the outlet pipe 9, or the control valve 12 is used to control only the solution filtered by the second filter barrel 3 in the second connecting pipe 11 to enter the outlet pipe 9, or the control valve 12 is used to control the solution filtered by the first filter barrel 2 in the first connecting pipe 10 and the solution filtered by the second filter barrel 3 in the second connecting pipe 11 to enter the outlet pipe 9 simultaneously; when the double-barrel filter is working and the filter material in the second filter barrel 3 is replaced, the first valve 6 controls the solution in the first connecting pipe 5 to enter the first filter barrel 2, the second valve 8 controls the solution in the second connecting pipe 7 not to enter the second filter barrel 3, and the control valve 12 controls only the solution filtered by the first filter barrel 2 in the first connecting pipe 10 to enter the outlet pipe 9; when the double-barrel filter is working and the filter material in the first filter barrel 2 is replaced, the first valve 6 controls the solution in the first connecting pipe 5 not to enter the first filter barrel 2, the second valve 8 controls the solution in the second connecting pipe 7 to enter the second filter barrel 3, and the control valve 12 controls only the solution filtered by the second filter barrel 3 in the second connecting pipe 11 to enter the outlet pipe 9.

[0090] The content not described in detail in the specification of the utility model belongs to the prior art well-known to those skilled in the art. What the utility model wants to protect is the structure of the product. The models of each component are not the content protected by the utility model and are also the prior art well-known to those skilled in the art. Any component that can achieve the above functions of the utility model on the market can be selected for application.

[0091] The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and descriptions only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A double barrel filter, characterized in that: It includes a frame, which is used to carry components and place the double barrel filter on the ground; A first filter barrel with filter material, the first filter barrel is arranged on the frame, and the first filter barrel is used to filter the solution; a second filter barrel with filter material, the second filter barrel being arranged on the frame and located on one side of the first filter barrel, and the second filter barrel being used for filtering the solution; An inlet pipe, the inlet pipe is arranged on the frame, and the inlet pipe is used to transport the solution when the double-barrel filter is working; A first connecting pipe, one end of which is connected to the first filter barrel, and the first connecting pipe is used for the solution in the pipe to enter the first filter barrel; A first valve, wherein the first valve is disposed on the first connecting pipe, and the first valve is used to control the solution in the first connecting pipe to enter the first filter barrel or not to enter the first filter barrel; A second connecting pipe, one end of which is connected to the second filter barrel, and the second connecting pipe is used for the solution in the pipe to enter the second filter barrel; a second valve, the second valve being disposed on the second connecting pipe, and the second valve being used to control the solution in the second connecting pipe to enter the second filter barrel or not to enter the second filter barrel; A conveying device, wherein the conveying device is arranged on the frame, the inlet end of the conveying device is connected to the inlet pipe, and the outlet end of the conveying device is connected to the other end of the first connecting pipe and the other end of the second connecting pipe at the same time, and the conveying device is used to convey the solution in the inlet pipe to the other end of the first connecting pipe and the other end of the second connecting pipe; An outlet pipe, the outlet pipe is arranged on the frame and is used for conveying the filtered solution; A first connecting pipe, one end of which is connected to the first filter barrel, and the first connecting pipe is used for the solution filtered by the first filter barrel to enter the outlet pipe; A second connecting pipe, one end of which is connected to the second filter barrel, and the second connecting pipe is used for the solution filtered by the second filter barrel to enter the outlet pipe; A control valve, the control valve is arranged between the other end of the first connecting pipe, the other end of the second connecting pipe and the outlet pipe, the control valve is used to control only the solution in the first connecting pipe that has been filtered by the first filter barrel to enter the outlet pipe, or the control valve is used to control only the solution in the second connecting pipe that has been filtered by the second filter barrel to enter the outlet pipe, or the control valve is used to control the solution in the first connecting pipe that has been filtered by the first filter barrel and the solution in the second connecting pipe that has been filtered by the second filter barrel to enter the outlet pipe at the same time; When the double-barrel filter is working and the filter material in the second filter barrel is replaced, the first valve controls the solution in the first connecting pipe to enter the first filter barrel, and the second valve controls the solution in the second connecting pipe not to enter the second filter barrel. The control valve controls only the solution in the first connecting pipe that has been filtered by the first filter barrel to enter the outlet pipe; When the double-barrel filter is working and the filter material in the first filter barrel is replaced, the first valve controls the solution in the first connecting pipe not to enter the first filter barrel, and the second valve controls the solution in the second connecting pipe to enter the second filter barrel. The control valve controls only the solution in the second connecting pipe that has been filtered by the second filter barrel to enter the outlet pipe.

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

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

4. A double barrel filter according to claim 1, characterized in that: The conveying device includes a one-inlet and two-outlet joint, the outlet end of the one-inlet and two-outlet joint is connected to the other end of the first connecting pipe and the other end of the second connecting pipe at the same time, and a conveying pump, which is arranged on the frame and connects the inlet pipe and the one-inlet and two-outlet joint.

5. A double barrel filter according to claim 1, characterized in that: It also includes an auxiliary barrel, which is arranged on the frame; a first pressure-regulating and draining device, the first pressure-regulating and draining device being connected and arranged between the first filter barrel and the auxiliary barrel, and being used for discharging gas when the air pressure value inside the first filter barrel is greater than a predetermined value so as to adjust the air pressure value inside the first filter barrel and facilitate the solution in the first filter barrel to follow the gas into the auxiliary barrel when discharging the gas; a second pressure regulating and draining device, the second pressure regulating and draining device being connected and arranged between the second filter barrel and the auxiliary barrel, and being used for discharging gas when the air pressure value inside the second filter barrel is greater than a predetermined value so as to adjust the air pressure value inside the second filter barrel and facilitate the solution in the second filter barrel to follow the gas into the auxiliary barrel when discharging the gas; An auxiliary layer, the auxiliary layer is arranged in the auxiliary barrel, and the auxiliary layer is used to purify the solution entering the auxiliary barrel through the first pressure regulating and liquid discharging device and / or the second pressure regulating and liquid discharging device; An auxiliary pipe, one end of which is connected to the auxiliary barrel, and the other end of which is connected to the inlet pipe, and the auxiliary pipe is used for the solution purified by the auxiliary layer to enter the inlet pipe; An auxiliary valve is arranged on the auxiliary pipe, and the auxiliary valve is used to control the solution in the auxiliary pipe to enter the inlet pipe when the double-barrel filter is working, and to control the solution in the auxiliary pipe not to enter the inlet pipe when the double-barrel filter is not working.

6. A double barrel filter according to claim 5, characterized in that: The auxiliary layer is an activated carbon layer with purification and odor removal functions.

7. A double barrel filter according to claim 5, characterized in that: The first pressure-regulating drainage device includes a first pressure-regulating drainage pipe with a valve, which is connected between the first filter barrel and the auxiliary barrel; and a first pressure gauge, which is arranged on the first pressure-regulating drainage pipe and located between the first filter barrel and the valve of the first pressure-regulating drainage pipe.

8. A double barrel filter according to claim 5, characterized in that: The second pressure-regulating drainage device includes a second pressure-regulating drainage pipe with a valve, which is connected between the second filter barrel and the auxiliary barrel; a second pressure gauge, which is arranged on the second pressure-regulating drainage pipe and located between the second filter barrel and the valve of the second pressure-regulating drainage pipe.

9. A double barrel filter according to claim 1, characterized in that: It also includes a linkage pipe, one end of which is connected to the second filter barrel and the other end of which is connected to the first connection pipe, and the linkage pipe is used for the solution filtered by the first filter barrel to enter the second filter barrel; A third valve, the third valve is used to control the solution in the linkage pipe that has been filtered by the first filter barrel to enter the second filter barrel or not to enter the second filter barrel; When the double-barrel filter is working and the filter material in the second filter barrel or the first filter barrel is replaced, the third valve controls the solution in the linkage pipe that has been filtered by the first filter barrel to prevent it from entering the second filter barrel; When the double-barrel filter is working and the filter material in the second filter barrel or / and the first filter barrel is not replaced, the first valve controls the solution in the first connecting pipe to enter the first filter barrel, the second valve controls the solution in the second connecting pipe not to enter the second filter barrel, the third valve controls the solution in the linkage pipe after being filtered by the first filter barrel to enter the second filter barrel, and the control valve controls only the solution in the second connecting pipe after being filtered by the second filter barrel to enter the outlet pipe; When the double-barrel filter is working and the filter material in the second filter barrel or / and the first filter barrel is not replaced, the first valve controls the solution in the first connecting pipe to enter the first filter barrel, the second valve controls the solution in the second connecting pipe to enter the second filter barrel, and the third valve controls the solution in the linkage pipe that has been filtered through the first filter barrel not to enter the second filter barrel. The control valve is used to control the solution in the first connecting pipe that has been filtered through the first filter barrel and the solution in the second connecting pipe that has been filtered through the second filter barrel to enter the outlet pipe at the same time.

10. A double barrel filter according to claim 1, characterized in that: A plurality of supporting plates are arranged between the inlet pipe and the frame; a supporting frame is arranged between the outlet pipe and the frame.

Images