Fermentation equipment for production of saline-alkali soil modifier

Abstract

The invention provides fermentation equipment for production of a saline-alkali soil improver. The fermentation equipment for the production of the saline-alkali soil improver comprises a bottom plate; the supporting frame is fixedly connected to the top of the bottom plate, the top of the supporting frame is fixedly connected with a fermentation tank, the fermentation tank comprises a shell, an inner container is installed in the shell, a heat preservation cavity is formed between the inner container and the shell, a sealing cover is installed at the top of the fermentation tank, and a feeding pipe is installed at the top of the sealing cover. According to the fermentation equipment for production of the saline-alkali soil improver, raw materials of the saline-alkali soil improver can be located in the first filter hopper through the structure, the raw materials are prevented from precipitating to the bottom of the inner wall of the inner container, meanwhile, the temperature in the inner container can be maintained in different seasons through cooperation of the multi-layer fermentation tank and the heat supply equipment, and the production efficiency is improved. The required temperature can be maintained for the raw materials of the saline-alkali soil improver in the fermentation tank, and the fermentation effect of the saline-alkali soil improver can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of saline-alkali land improver fermentation, in particular to a fermentation device for producing saline-alkali land improver. Background Art

[0002] Saline-alkali land is a type of salt accumulation, which means that the salt contained in the soil affects the normal growth of crops. Saline-alkali land includes saline soil, alkaline soil and other soils with varying degrees of salinization and alkalization. It has high salt content or alkalinity, poor soil structure, easy compaction, low organic matter content, and weak soil fertilizer retention capacity, which affects crop growth.

[0003] In the process of saline-alkali land treatment, the salt is first washed out by drainage, and then an improver to improve the salinity is used on the saline-alkali land. During the production process of the improver, the corresponding raw materials are mixed together, and after they are completely mixed, they are fermented inside the container at the corresponding temperature.

[0004] However, the existing saline-alkali land improvers have certain requirements for the surrounding temperature during the fermentation process, and the precipitate is easy to settle at the bottom during fermentation. The fermentation equipment used in the production of existing saline-alkali land improvers generally cannot provide the corresponding temperature for the fermentation of saline-alkali land improvers in time according to the seasons, thus affecting the fermentation effect of the saline-alkali land improvers.

[0005] Therefore, it is necessary to provide a fermentation equipment for producing saline-alkali land improver to solve the above technical problems. Summary of the invention

[0006] The present invention provides a fermentation device for producing a saline-alkali land improver, which solves the problem that in the existing fermentation device for producing a saline-alkali land improver, sediments are easily deposited at the bottom during actual use and the corresponding temperature cannot be provided for the fermentation of the saline-alkali land improver according to different seasons, thereby affecting the fermentation effect of the saline-alkali land improver.

[0007] In order to solve the above technical problems, the fermentation equipment for producing saline-alkali land improver provided by the present invention comprises: a bottom plate;

[0008] A support frame, wherein the support frame is fixedly connected to the top of the bottom plate, a fermentation tank is fixedly connected to the top of the support frame, the fermentation tank comprises an outer shell, an inner liner is installed inside the outer shell, a heat preservation chamber is arranged between the inner liner and the outer shell, a sealing cover is installed on the top of the fermentation tank, a feed pipe is installed on the top of the sealing cover, a driving assembly is installed on the top of the sealing cover, a stirring assembly is installed on the output end of the driving assembly, a first filter bucket is installed inside the inner liner, a limiting tube is installed at the bottom middle position of the inner wall of the first filter bucket, a slag discharge pipe is fixedly connected to the bottom end of the first filter bucket, the other end of the slag discharge pipe is fixedly connected to the first valve, a discharge pipe is fixedly connected to the bottom of the outer shell, and the other end of the discharge pipe is fixedly connected to the second valve;

[0009] A heating device, wherein the heating device is fixedly connected to the top of the bottom plate, a first conveying assembly is installed on the front of the heating device, a return pipe is installed at the inlet of the first conveying assembly, a first conveying assembly is installed at the outlet of the first conveying assembly, a second conveying assembly is installed on the top of the heating device, and a second conveying pipe is installed at the outlet of the second conveying assembly;

[0010] The interior of the insulation chamber is provided with a diverter plate which can block the flow rate of the insulation liquid, but does not affect the circulation of the insulation liquid in the insulation chamber. The inner tank is made of heat-conducting material, and the outer shell is made of insulation material. A valve is installed on the top of the feed pipe, and the other end of the second delivery pipe is connected to the outer surface of the outer shell at the top position, so that the heated liquid can be injected into the interior of the insulation chamber. The other end of the reflux pipe is connected to the bottom of the outer shell. The first delivery component and the second delivery component both include a shell and a delivery pump. The inlet of the second delivery component is connected to the heating bin inside the heating equipment through a pipeline, so that the heated liquid can be extracted. The other end of the first delivery component is connected to the heating bin inside the heating equipment, so that the refluxed liquid can be injected into the heating bin for reheating. A sensor for detecting the stability of the inside of the fermentation tank is installed on the top of the sealing cover.

[0011] Preferably, a mounting base is fixedly connected to the outer surface of the housing, and an operating screen is mounted on the front of the mounting base;

[0012] The operation screen can control the operation of the equipment on the base plate.

[0013] Preferably, a control box is installed on the top of the base plate, and a box door is rotatably connected to the front of the control box;

[0014] The control box is equipped with a power switch and a controller for controlling the operation of the equipment.

[0015] Preferably, the driving assembly comprises a protective shell, a motor is arranged inside the protective shell, and ventilation holes are provided on the front and back of the protective shell;

[0016] The motor is turned on and off at a fixed time, and the output shaft of the motor is connected to the top end of the rotating shaft.

[0017] Preferably, the stirring assembly comprises a rotating shaft, a fixing block is fixedly connected to the outer surface of the rotating shaft near the top, and cleaning racks are fixedly connected to both sides of the fixing block;

[0018] The cleaning frame contacts the inner surface of the first filter bucket, and a port is provided at the bottom of the inner wall of the first filter bucket corresponding to the position of the slag discharge pipe.

[0019] Preferably, a fixing ring is fixedly connected to the bottom end of the rotating shaft, a stirring frame is fixedly connected to the opposite side of the outer surface of the fixing ring, and a convex bolt is fixedly connected to the top of the stirring frame;

[0020] The convex bolt can assist the stirring frame to achieve the stirring effect.

[0021] Preferably, the other end of the second valve is fixedly connected to a connecting pipe, the other end of the connecting pipe is fixedly connected to a filter box, and the bottom of the filter box is fixedly connected to a support plate;

[0022] The filter box can precisely filter the fermented saline-alkali land improver.

[0023] Preferably, a top cover is installed on the top of the filter box, a filter screen is installed inside the filter box, and a butt joint is fixedly connected to the other side of the filter box;

[0024] The other end of the butt-joint pipe is connected to the saline-alkali land improver storage tank.

[0025] Preferably, a second filter hopper is installed inside the filter box via a mounting ring, one end of the second filter hopper is fixedly connected to a sewage pipe, and the other end of the sewage pipe is fixedly connected to a third valve;

[0026] The connection where the sewage pipe passes through the filter box is sealed.

[0027] Compared with the related art, the fermentation equipment for producing saline-alkali land improver provided by the present invention has the following beneficial effects:

[0028] The invention provides a fermentation device for producing a saline-alkali land improver. In order to provide a corresponding fermentation environment for the fermentation of the saline-alkali land improver in different seasons, a fermentation tank is divided into an outer shell and an inner shell, and an insulation chamber is arranged between the outer shell and the inner shell. Liquid heated to a corresponding temperature by a heating device can flow inside the insulation chamber, so as to maintain the fermentation temperature inside the inner shell. In order to prevent the saline-alkali land improver raw material from sinking to the bottom of the inner shell, a first filter bucket is installed inside the inner shell, and the saline-alkali land improver production raw material is fermented inside the first filter bucket, and the liquid is located inside the inner shell, so as to reduce the situation that the raw material sinks to the bottom of the inner shell wall. At the same time, the raw material can be mixed and fermented better by stirring at irregular intervals with a stirring component. Through this structure, the saline-alkali land improver raw material can be located inside the first filter bucket, so as to prevent the raw material from settling to the bottom of the inner shell wall. At the same time, the multi-layer fermentation tank and the heating device can be used to maintain the temperature inside the inner shell in different seasons, and the saline-alkali land improver raw material can maintain a required temperature in the fermentation tank, which is beneficial to improving the fermentation effect of the saline-alkali land improver. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic structural diagram of a first embodiment of a fermentation device for producing a saline-alkali land improver provided by the present invention;

[0030] Figure 2 A structural schematic diagram of a stirring assembly is provided for the present invention;

[0031] Figure 3 The present invention provides Figure 2 An enlarged view of point A is shown;

[0032] Figure 4 A schematic diagram of the structure of the discharge pipe is provided for the present invention;

[0033] Figure 5 A structural schematic diagram of a motor is provided for the present invention;

[0034] Figure 6 A schematic structural diagram of a second embodiment of a fermentation device for producing a saline-alkali land improver provided by the present invention;

[0035] Figure 7 A structural schematic diagram of a first filter bucket is provided for the present invention.

[0036] Numbers in the figure: 1, bottom plate, 2, support frame, 3, box door, 4, control box, 5, first conveying assembly, 6, heating equipment, 7, reflux pipe, 8, first conveying pipe, 9, slag discharge pipe, 10, first valve, 11, second conveying assembly, 12, second conveying pipe, 13, feed pipe, 14, drive assembly, 141, protective shell, 142, air vent, 143, motor, 15, sealing cover, 16, installation base, 17, operation screen, 18, fermentation tank, 181, shell, 182, Insulation chamber, 183, inner tank, 19, discharge pipe, 20, second valve, 21, stirring assembly, 211, rotating shaft, 212, fixed block, 213, cleaning rack, 214, convex bolt, 215, stirring rack, 216, fixed ring, 22, first filter bucket, 23, limit pipe, 24, support plate, 25, third valve, 26, drain pipe, 27, filter box, 28, docking pipe, 29, top cover, 30, connecting pipe, 31, mounting ring, 32, second filter bucket, 33, filter net. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0038] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A schematic structural diagram of a first embodiment of a fermentation device for producing a saline-alkali land improver provided by the present invention; Figure 2 A structural schematic diagram of a stirring assembly is provided for the present invention; Figure 3 The present invention provides Figure 2 An enlarged view of point A is shown; Figure 4 A schematic diagram of the structure of the discharge pipe is provided for the present invention; Figure 5 The present invention provides a schematic diagram of the structure of the motor. The fermentation equipment for producing saline-alkali land improver comprises: a bottom plate 1;

[0039] A support frame 2, wherein the support frame 2 is fixedly connected to the top of the bottom plate 1, a fermentation tank 18 is fixedly connected to the top of the support frame 2, the fermentation tank 18 comprises an outer shell 181, an inner liner 183 is installed inside the outer shell 181, a heat preservation chamber 182 is arranged between the inner liner 183 and the outer shell 181, a sealing cover 15 is installed on the top of the fermentation tank 18, a feed pipe 13 is installed on the top of the sealing cover 15, a driving assembly 14 is installed on the top of the sealing cover 15, a stirring assembly 21 is installed on the output end of the driving assembly 14, a first filter bucket 22 is installed inside the inner liner 183, a limiting tube 23 is installed at the bottom middle position of the inner wall of the first filter bucket 22, a slag discharge pipe 9 is fixedly connected to the bottom end of the first filter bucket 22, and the other end of the slag discharge pipe 9 is fixedly connected to the first valve 10, a discharge pipe 19 is fixedly connected to the bottom of the outer shell 181, and the other end of the discharge pipe 19 is fixedly connected to the second valve 20;

[0040] A heating device 6, the heating device 6 is fixedly connected to the top of the bottom plate 1, a first conveying assembly 5 is installed on the front of the heating device 6, a return pipe 7 is installed at the inlet of the first conveying assembly 5, a first conveying assembly 8 is installed at the outlet of the first conveying assembly 5, a second conveying assembly 11 is installed on the top of the heating device 6, and a second conveying pipe 12 is installed at the outlet of the second conveying assembly 11;

[0041] The interior of the insulation chamber 182 is provided with a diverter plate that can block the flow rate of the insulation liquid, but does not affect the circulation of the insulation liquid in the insulation chamber 182. The inner tank 183 is a heat-conducting material, and the outer shell 181 is an insulation material. A valve is installed on the top of the feed pipe 13, and the other end of the second delivery pipe 12 is connected to the outer surface of the outer shell 181 at the top, so that the heated liquid can be injected into the interior of the insulation chamber 182. The other end of the reflux pipe 7 is connected to the bottom of the outer shell 181. The first conveying component 8 and the second conveying component 11 both include a shell and a delivery pump. The inlet of the second conveying component 11 is connected to the heating bin inside the heating equipment 6 through a pipeline to extract the heated liquid. The other end of the first conveying component 8 is connected to the heating bin inside the heating equipment 6, so that the refluxed liquid can be injected into the heating bin for reheating. A sensor for detecting the stability of the inside of the fermentation tank 18 is installed on the top of the sealing cover 15. The slag discharge pipe 9 is located at the bottom of the first filter bucket 22 close to the outer surface, so that the internal residue can be discharged, but it does not affect the rotation of the rotating shaft 211.

[0042] The outer surface of the housing 181 is fixedly connected with a mounting base 16, and the front of the mounting base 16 is mounted with an operation screen 17;

[0043] The operation screen 17 can control the operation of the equipment on the bottom plate 1 and can also display the information detected by some detection equipment.

[0044] A control box 4 is installed on the top of the base plate 1, and a box door 3 is rotatably connected to the front of the control box 4;

[0045] The box door 3 is provided with a lock, and the control box 4 is internally installed with a power switch and a controller for controlling the operation of the equipment.

[0046] The driving assembly 14 comprises a protective shell 141, a motor 143 is arranged inside the protective shell 141, and ventilation holes 142 are provided on the front and back of the protective shell 141;

[0047] The ventilation hole 142 is used to assist heat dissipation. The motor 143 is opened and closed at a fixed time. The output shaft of the motor 143 is connected to the top end of the rotating shaft 211.

[0048] The stirring assembly 21 comprises a rotating shaft 211, a fixing block 212 is fixedly connected to the outer surface of the rotating shaft 211 near the top, and cleaning frames 213 are fixedly connected to both sides of the fixing block 212;

[0049] The cleaning frame 213 contacts the inner surface of the first filter bucket 22 . The bottom of the inner wall of the first filter bucket 22 is provided with an opening corresponding to the position of the slag discharge pipe 9 . The fixing block 212 is located above the limiting pipe 23 , and the rotating shaft 211 passes through the limiting pipe 23 .

[0050] A fixing ring 216 is fixedly connected to the bottom end of the rotating shaft 211, a stirring frame 215 is fixedly connected to the opposite side of the outer surface of the fixing ring 216, and a convex bolt 214 is fixedly connected to the top of the stirring frame 215;

[0051] The protruding bolt 214 can assist the stirring frame 215 in achieving a stirring effect, and the bottom of the stirring frame 215 is in contact with the bottom of the inner wall of the inner container 183 .

[0052] The working principle of the fermentation equipment for producing saline-alkali land improver provided by the present invention is as follows:

[0053] The fermentation tank 18 is divided into an outer shell 181 and an inner shell 183, and an insulation chamber 182 is provided between the outer shell 181 and the inner shell 183. Liquid heated to a corresponding temperature by the heating device 6 can flow inside the insulation chamber 182, so as to maintain the fermentation temperature inside the inner shell 183. In order to prevent the saline-alkali land improver raw materials from sinking to the bottom, a first filter bucket 22 is installed inside the inner shell 183, and the saline-alkali land improver production raw materials are fermented inside the first filter bucket 22, while the liquid is located inside the inner shell 183, so as to reduce the situation that the raw materials sink to the bottom of the inner wall of the inner shell 183. At the same time, stirring from time to time with the stirring component 21 can make the raw materials better mixed and fermented. In actual use, the saline-alkali land improver is firstly The raw materials of the agent are transported to the interior of the fermentation tank 18 through the feed pipe 13, so that the raw materials are located inside the first filter bucket 22. During this process, the fermentation liquid of the saline-alkali land improver will soak the raw materials inside the first filter bucket 22. At the same time, the heating equipment 6 sets the temperature for heating the internal liquid according to different seasons. Then, the liquid of the corresponding temperature is injected into the interior of the insulation chamber 182 through the second delivery pipe 12 through the second delivery component 11. The fermentation raw materials inside the inner tank 183 can be heated by the principle of heat exchange. During this process, the liquid inside the insulation chamber 182 will be transported to the interior of the heating equipment 6 through the reflux pipe 7 and the first delivery component 5 for reheating, so that the heated liquid can circulate inside the insulation chamber 182.

[0054] Compared with the related art, the fermentation equipment for producing saline-alkali land improver provided by the present invention has the following beneficial effects:

[0055] In order to provide a corresponding fermentation environment for the fermentation of the saline-alkali land improver in different seasons, the fermentation tank 18 is divided into an outer shell 181 and an inner tank 183, and an insulation chamber 182 is provided between the outer shell 181 and the inner tank 183. The liquid heated to a corresponding temperature by the heating device 6 can flow inside the insulation chamber 182, so as to maintain the fermentation temperature inside the inner tank 183. In order to prevent the saline-alkali land improver raw material from sinking to the bottom of the inner tank 183, a first filter hopper 22 is installed inside the inner tank 183, and the saline-alkali land improver production raw material is fermented inside the first filter hopper 22, while the liquid inside The interior of the inner tank 183 can reduce the situation where the raw materials sink to the bottom of the inner wall of the inner tank 183. At the same time, the stirring component 21 can be used to stir the raw materials from time to time to allow the raw materials to be better mixed and fermented. Through this structure, the saline-alkali land improver raw materials can be located inside the first filter bucket 22 to prevent the raw materials from settling to the bottom of the inner wall of the inner tank 183. At the same time, the multi-layer fermentation tank 18 and the heating equipment 6 can be used to maintain the temperature inside the inner tank 183 in different seasons. The required temperature can be maintained for the saline-alkali land improver raw materials in the fermentation tank 18, which is beneficial to improving the fermentation effect of the saline-alkali land improver.

[0056] Second embodiment

[0057] Please refer to Figure 6-Figure 7 , Figure 6 A schematic structural diagram of a second embodiment of a fermentation device for producing a saline-alkali land improver provided by the present invention; Figure 7 The present invention provides a structural schematic diagram of a first filter bucket. Based on the fermentation equipment for producing a saline-alkali land improver provided in the first embodiment of the present application, the second embodiment of the present application provides another fermentation equipment for producing a saline-alkali land improver. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0058] Specifically, the fermentation equipment for producing saline-alkali land improver provided in the second embodiment of the present application is different in that the other end of the second valve 20 is fixedly connected to a connecting pipe 30, the other end of the connecting pipe 30 is fixedly connected to a filter box 27, and the bottom of the filter box 27 is fixedly connected to a support plate 24;

[0059] The support plate 24 is connected to one side of the bottom plate 1, and the filter box 27 can precisely filter the fermented saline-alkali land improving agent.

[0060] A top cover 29 is installed on the top of the filter box 27, a filter screen 33 is installed inside the filter box 27, and a butt joint 28 is fixedly connected to the other side of the filter box 27;

[0061] The other end of the butt joint 28 is connected to the saline-alkali land improver storage tank, and may also be connected to subsequent processing equipment. The filter screen 33 is located inside the filter box 27 on one side close to the butt joint 28 .

[0062] A second filter hopper 32 is installed inside the filter box 27 via a mounting ring 31, one end of the second filter hopper 32 is fixedly connected to a sewage pipe 26, and the other end of the sewage pipe 26 is fixedly connected to a third valve 25;

[0063] The sewage pipe 26 passes through the filter box 27 and is sealed at the connection point. The inlet of the second filter bucket 32 ​​faces one side of the connecting pipe 30.

[0064] Compared with the related art, the fermentation equipment for producing saline-alkali land improver provided by the present invention has the following beneficial effects:

[0065] In order to improve the accuracy of the saline-alkali land improver after fermentation and reduce internal impurities, a connecting pipe 30 is installed at the other end of the discharge pipe 19 through the second valve 20, and a filter box 27 is fixedly connected to the other end of the connecting pipe 30. At the same time, the other side of the filter box 27 is connected to the storage tank through the docking pipe 28, and a filter screen 33 and a second filter bucket 32 ​​are respectively installed inside the filter box 27, and a sewage pipe 26 with a third valve 25 is installed at one end of the second filter bucket 32. In actual use, after the fermentation of the saline-alkali land improver is completed, it is only necessary to open the second valve 20, and the saline-alkali land improver liquid will flow into the interior of the filter box 27, first through the second filter bucket 32 ​​for the first filtration, and then through the filter screen 33 for the second filtration, and the filtered saline-alkali land improver liquid will be transported to the storage tank for storage, and the staff only needs to open the third valve 25 regularly to clean the impurities inside the second filter bucket 32, so that the impurities inside the second filter bucket 32 ​​can be discharged through the sewage pipe 26. The accuracy of the saline-alkali land improver can be improved through this structure.

[0066] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A fermentation device for producing a saline-alkali land improver, characterized in that: include: Base plate; A support frame, wherein the support frame is fixedly connected to the top of the bottom plate, a fermentation tank is fixedly connected to the top of the support frame, the fermentation tank comprises an outer shell, an inner liner is installed inside the outer shell, a heat preservation chamber is arranged between the inner liner and the outer shell, a sealing cover is installed on the top of the fermentation tank, a feed pipe is installed on the top of the sealing cover, a driving assembly is installed on the top of the sealing cover, a stirring assembly is installed on the output end of the driving assembly, a first filter bucket is installed inside the inner liner, a limiting tube is installed at the bottom middle position of the inner wall of the first filter bucket, a slag discharge pipe is fixedly connected to the bottom end of the first filter bucket, the other end of the slag discharge pipe is fixedly connected to the first valve, a discharge pipe is fixedly connected to the bottom of the outer shell, and the other end of the discharge pipe is fixedly connected to the second valve; A heating device, wherein the heating device is fixedly connected to the top of the base plate, a first conveying component is installed on the front of the heating device, a return pipe is installed at the inlet of the first conveying component, a first conveying component is installed at the outlet of the first conveying component, a second conveying component is installed on the top of the heating device, and a second conveying pipe is installed at the outlet of the second conveying component.

2. The fermentation equipment for producing saline-alkali land improver according to claim 1, characterized in that: The outer surface of the shell is fixedly connected with a mounting base, and the front of the mounting base is mounted with an operation screen.

3. The fermentation equipment for producing saline-alkali land improver according to claim 1, characterized in that: A control box is installed on the top of the bottom plate, and a box door is rotatably connected to the front of the control box.

4. The fermentation equipment for producing saline-alkali land improver according to claim 1, characterized in that: The driving assembly comprises a protective shell, a motor is arranged inside the protective shell, and ventilation holes are provided on the front and back sides of the protective shell.

5. The fermentation equipment for producing saline-alkali land improver according to claim 1, characterized in that: The stirring assembly comprises a rotating shaft, a fixing block is fixedly connected to a position of the outer surface of the rotating shaft near the top, and cleaning racks are fixedly connected to both sides of the fixing block.

6. The fermentation equipment for producing saline-alkali land improver according to claim 5, characterized in that: The bottom end of the rotating shaft is fixedly connected with a fixing ring, the outer surface of the fixing ring is fixedly connected with a stirring frame on the opposite side, and the top of the stirring frame is fixedly connected with a convex bolt.

7. The fermentation equipment for producing saline-alkali land improver according to claim 1, characterized in that: The other end of the second valve is fixedly connected to a connecting pipe, the other end of the connecting pipe is fixedly connected to a filter box, and the bottom of the filter box is fixedly connected to a supporting plate.

8. The fermentation equipment for producing saline-alkali land improver according to claim 7, characterized in that: A top cover is installed on the top of the filter box, a filter screen is installed inside the filter box, and a butt joint pipe is fixedly connected to the other side of the filter box.

9. The fermentation equipment for producing saline-alkali land improver according to claim 7, characterized in that: A second filter bucket is installed inside the filter box via a mounting ring, one end of the second filter bucket is fixedly connected to a sewage pipe, and the other end of the sewage pipe is fixedly connected to a third valve.

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