Liquid storage tank cleaning system and liquid storage tank cleaning method

Abstract

The invention relates to the technical field of tank cleaning devices, and discloses a liquid storage tank cleaning system and a liquid storage tank cleaning method.The liquid storage tank cleaning system comprises a cleaning liquid pumping device, a first storage tank, a second storage tank, a second cleaning pipe and a third cleaning pipe. The first storage tank comprises a first tank body, a feeding pipe and a first discharging pipe. The second storage tank comprises a second tank body, a first cleaning pipe, a second discharging pipe and a third discharging pipe, the two ends of the first cleaning pipe are communicated with the cleaning liquid pumping device and the second tank body respectively, the second discharging pipe is communicated with the second tank body and the first discharging pipe, and the third discharging pipe is communicated with the second discharging pipe and the next-stage storage tank. And the third cleaning pipe is communicated with the second discharging pipe and the cleaning liquid pumping device. Therefore, a loop is formed among the cleaning liquid pumping device, the first storage tank and the second storage tank, cleaning liquid can flow between the first storage tank and the second storage tank in two directions, two-way washing can be carried out, cleaning dead corners are reduced, and the cleaning effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tank cleaning devices, and particularly to a liquid storage tank cleaning system and a liquid storage tank cleaning method. Background Art

[0002] In the industries of brewing soy sauce, sauces, and vinegar, fluid products are usually stored in storage tanks, and fluid products can be transported between multiple storage tanks through pipelines. When the fluid products are diverted from the storage tanks, there will be some fluids remaining in the storage tanks, pipelines, and valves, and the tanks need to be cleaned regularly. In the related art, the cleaning of multi-stage storage tanks is usually achieved by arranging cleaning pipes to connect the storage tanks in series, and during the cleaning process, the storage tanks are cleaned in sequence. The cleaning liquid has a single flow direction, resulting in poor cleaning effects and prone to cleaning dead corners, which in turn affects the quality of the materials. Summary of the Invention

[0003] The technical problem to be solved by the present invention is that in the related art, the cleaning effect of multi-stage storage tanks is poor and there are easily cleaning dead corners, which in turn affects the quality of the materials.

[0004] To solve the above technical problem, the present invention provides a liquid storage tank cleaning system, which includes:

[0005] A cleaning liquid pumping device for providing cleaning liquid;

[0006] A first storage tank, which includes a first tank body, a feed pipe and a first discharge pipe both connected and communicating with the first tank body. One end of the feed pipe communicates with the feed port of the first tank body, and the other end of the feed pipe is used to communicate with a feeding device. One end of the first discharge pipe communicates with the discharge port of the first tank body, and a first material conveying valve is provided on the first discharge pipe;

[0007] A second storage tank, which includes a second tank body, a first cleaning pipe, a second discharge pipe and a third discharge pipe. Both ends of the first cleaning pipe are respectively connected and communicated with the cleaning liquid pumping device and the second tank body. A second discharge valve is provided on the second discharge pipe,

[0008] Both ends of the second discharge pipe are respectively connected and communicated with the discharge port of the second tank body and the other end of the first discharge pipe,

[0009] One end of the third discharge pipe is connected and communicated with the second discharge pipe and is located between the second discharge valve and the first discharge pipe, and the other end is used to communicate with the next-stage storage tank;

[0010] A second cleaning pipe, one end of which is connected and communicated with the third discharge pipe, and the other end is connected and communicated with the feed port of the first tank body. A first cleaning valve is provided on the second cleaning pipe;

[0011] A third cleaning pipe, one end of the third cleaning pipe is communicated with the second discharge pipe, and the other end is communicated with the cleaning liquid pumping device, and a second cleaning valve is arranged on the third cleaning pipe.

[0012] According to an embodiment of the present invention, a first discharge valve is arranged on the first discharge pipe, and the first discharge valve is located between the discharge port of the second tank body and the first feeding valve;

[0013] A third discharge valve is arranged on the third discharge pipe, and the third discharge valve is located upstream of the second cleaning pipe.

[0014] According to an embodiment of the present invention, the liquid storage tank cleaning system further includes a reflux pipe, one end of the reflux pipe is communicated with the first discharge pipe and is located downstream of the first discharge valve,

[0015] and the other end is communicated with the third discharge pipe and is located downstream of the second cleaning pipe.

[0016] According to an embodiment of the present invention, a first reflux valve and a second reflux valve are arranged on the reflux pipe, the first reflux valve is arranged at the connection part of the reflux pipe and the first discharge pipe, and the second reflux valve is arranged at the connection part of the reflux pipe and the third discharge pipe.

[0017] According to an embodiment of the present invention, a protection valve is arranged on the third discharge pipe, and the protection valve is located between the second cleaning pipe and the reflux pipe.

[0018] According to an embodiment of the present invention, the second cleaning pipe has a connecting branch pipe, the connecting branch pipe is communicated with the feeding pipe, and a third cleaning valve is arranged on the connecting branch pipe.

[0019] According to an embodiment of the present invention, a fourth discharge valve is arranged on the third discharge pipe, and the fourth discharge valve is located between the third discharge valve and the second cleaning pipe,

[0020] The liquid storage tank cleaning system further includes a fourth cleaning pipe, one end of the fourth cleaning pipe is communicated with the third discharge pipe and is located between the third discharge valve and the fourth discharge valve, and the other end is communicated with the cleaning liquid pumping device, and a liquid inlet valve is arranged on the fourth cleaning pipe.

[0021] According to an embodiment of the present invention, a fifth discharge valve is arranged on the third discharge pipe, and the fifth discharge valve is located downstream of the third discharge valve.

[0022] The liquid storage tank cleaning system further includes a first pulse pipe. One end of the first pulse pipe communicates with the third discharge pipe and is located between the third discharge valve and the fifth discharge valve, and the other end communicates with the cleaning liquid pumping device. A first pulse valve is provided on the first pulse pipe.

[0023] According to an embodiment of the present invention, a second feeding valve is provided on the first discharge pipe, and the second feeding valve is located downstream of the first feeding valve.

[0024] The liquid storage tank cleaning system further includes a second pulse pipe. One end of the second pulse pipe communicates with the first discharge pipe and is located between the first feeding valve and the second feeding valve, and the other end communicates with the cleaning liquid pumping device. A second pulse valve is provided on the second pulse pipe.

[0025] The present invention also provides a method for cleaning a liquid storage tank. The method for cleaning a liquid storage tank uses the liquid storage tank cleaning system as described above. A third discharge valve and a fifth discharge valve are provided on the third discharge pipe, and the fifth discharge valve is located downstream of the third discharge valve. The liquid storage tank cleaning system further includes a first pulse pipe. One end of the first pulse pipe communicates with the third discharge pipe and is located between the third discharge valve and the fifth discharge valve, and the other end communicates with the cleaning liquid pumping device. A first pulse valve is provided on the first pulse pipe;

[0026] A second feeding valve is provided on the first discharge pipe, and the second feeding valve is located downstream of the first feeding valve. The liquid storage tank cleaning system further includes a second pulse pipe. One end of the second pulse pipe communicates with the first discharge pipe and is located between the first feeding valve and the second feeding valve, and the other end communicates with the cleaning liquid pumping device. A second pulse valve is provided on the second pulse pipe;

[0027] The method for cleaning a liquid storage tank includes:

[0028] When pulse cleaning the second tank body, the second discharge valve, the third discharge valve, and the fifth discharge valve, control the second discharge valve, the third discharge valve, and the first pulse valve to be all opened, control the second feeding valve, the fifth discharge valve, and the second cleaning valve to be all closed. The cleaning liquid pumping device periodically pumps cleaning liquid into the first cleaning pipe within a first set time, and the first pumping cycle of the cleaning liquid pumping device is less than the first set time.

[0029] According to an embodiment of the present invention, the method for cleaning a liquid storage tank further includes:

[0030] When the second tank body, the second discharge valve, the second discharge pipe, the first material conveying valve and the second material conveying valve are pulse-cleaned, control the second discharge valve, the second material conveying valve and the second pulse valve to be all opened, control the third discharge valve, the first material conveying valve and the second cleaning valve to be all closed, the cleaning liquid pumping device periodically pumps cleaning liquid to the first cleaning pipe within a second set time, and the second pumping cycle of the cleaning liquid pumping device is less than the second set time.

[0031] In an embodiment of the present invention, a liquid storage tank cleaning system is communicated with a second storage tank through a cleaning liquid pumping device, and a loop is formed among the cleaning liquid pumping device, the first storage tank and the second storage tank through a second cleaning pipe and a third cleaning pipe, so that the cleaning liquid can flow bidirectionally between the first storage tank and the second storage tank to perform bidirectional flushing on the first discharge pipe and the second discharge pipe, reduce cleaning dead corners and improve the cleaning effect. Description of the Drawings

[0032] Figure 1 is a schematic structural diagram of the liquid storage tank cleaning system provided by an embodiment of the present invention.

[0033] Figure 2 is one of the schematic diagrams of the cleaning liquid flow path during the cleaning process of the liquid storage tank cleaning system provided by an embodiment of the present invention.

[0034] Figure 3 is the second of the schematic diagrams of the cleaning liquid flow path during the cleaning process of the liquid storage tank cleaning system provided by an embodiment of the present invention.

[0035] Figure 4 is the third of the schematic diagrams of the cleaning liquid flow path during the cleaning process of the liquid storage tank cleaning system provided by an embodiment of the present invention.

[0036] Figure 5 is the fourth of the schematic diagrams of the cleaning liquid flow path during the cleaning process of the liquid storage tank cleaning system provided by an embodiment of the present invention.

[0037] Figure 6 is the fifth of the schematic diagrams of the cleaning liquid flow path during the cleaning process of the liquid storage tank cleaning system provided by an embodiment of the present invention.

[0038] Figure 7 is the sixth of the schematic diagrams of the cleaning liquid flow path during the cleaning process of the liquid storage tank cleaning system provided by an embodiment of the present invention.

[0039] Reference Signs:

[0040] 100, cleaning liquid pumping device;

[0041] 110. First storage tank; 111. First tank body; 112. Feed pipe; 1121. First flowmeter; 1122. Feed valve; 113. First discharge pipe; 1131. First discharge valve; 1132. First water pump;

[0042] 120. Second storage tank; 121. Second tank body; 122. First cleaning pipe; 123. Second discharge pipe; 1231. Second discharge valve; 124. Third discharge pipe; 1241. Third discharge valve; 1242. Fourth discharge valve; 1243. Fifth discharge valve; 1244. Protection valve; 1245. Second flowmeter; 1246. Second water pump;

[0043] 131. First material transfer valve; 132. Second material transfer valve;

[0044] 140. Second cleaning pipe; 141. First cleaning valve; 142. Connecting branch pipe; 143. Third cleaning valve;

[0045] 150. Third cleaning pipe; 151. Second cleaning valve; 152. Filter; 153. Check valve; 154. Third water pump;

[0046] 160. Return pipe; 161. First return valve; 162. Second return valve;

[0047] 170. Fourth cleaning pipe; 171. Liquid inlet valve;

[0048] 180. First pulse pipe; 181. First pulse valve; 182. Second pulse pipe; 183. Second pulse valve. Detailed implementation manners

[0049] The following combines the accompanying drawings and embodiments to further describe in detail the specific implementation manners of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0050] In the description of the embodiments of the present invention, the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0051] In the description of the embodiments of the present invention, unless otherwise clearly defined and limited, the terms "connected" and "coupled" shall be understood in a broad sense. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific situations.

[0052] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0053] As Figure 1 shown, a liquid storage tank cleaning system according to an embodiment of the present invention includes: a cleaning liquid pumping device 100, a first storage tank 110, a second storage tank 120, a second cleaning pipe 140, and a third cleaning pipe 150.

[0054] Specifically, the cleaning liquid pumping device 100 is used to provide cleaning liquid, and the cleaning liquid pumping device 100 can provide one kind of cleaning liquid or multiple kinds of cleaning liquid. The first storage tank 110 includes a first tank body 111, a feed pipe 112, and a first discharge pipe 113 that are both connected and communicated with the first tank body 111. The first tank body 111 is used to store materials. One end of the feed pipe 112 is communicated with the feed port of the first tank body 111, and the other end of the feed pipe 112 is used to be communicated with a feeding device. A feed valve 1122 can be provided between the feed pipe 112 and the feeding device, and the materials are transported into the first tank body 111 through the feed pipe 112. One end of the first discharge pipe 113 is communicated with the discharge port of the first tank body 111, and a first material conveying valve 131 is provided on the first discharge pipe 113.

[0055] The second storage tank 120 includes a second tank body 121, a first cleaning pipe 122, a second discharge pipe 123, and a third discharge pipe 124. The second tank body 121 is used to store materials. Both ends of the first cleaning pipe 122 are respectively communicated with the cleaning liquid pumping device 100 and the second tank body 121. A second discharge valve 1231 is provided on the second discharge pipe 123. Both ends of the second discharge pipe 123 are respectively communicated with the discharge port of the second tank body 121 and the other end of the first discharge pipe 113, and the first material conveying valve 131 can cut off the fluid conveyance between the second discharge pipe 123 and the first discharge pipe 113.

[0056] One end of the third discharge pipe 124 communicates with the second discharge pipe 123 and is located between the second discharge valve 1231 and the first discharge pipe 113, and the other end is used to communicate with the next-level storage tank. In some embodiments, a first water pump 1132 is connected to the first discharge pipe 113 to pump the fluid in the first tank 111 into the second tank 121, and a second water pump 1246 is connected to the third discharge pipe 124 to pump the fluid in the second tank 121 into the next-level storage tank.

[0057] As Figure 1 shown by the arrow in the figure, the flow path of the material in the liquid storage tank cleaning system is as follows: the material in the feeding device is transported to the first tank 111 through the feeding pipe 112, and then is transported to the second tank 121 through the first discharge pipe 113 and the second discharge pipe 123. The material in the second tank 121 is output from the second discharge pipe 123 and is transported to the next-level storage tank through the third discharge pipe 124. It can be understood that in the present application, the upstream and downstream are both referenced with the flow direction of the material.

[0058] One end of the second cleaning pipe 140 communicates with the third discharge pipe 124, and the other end communicates with the feeding port of the first tank 111. A first cleaning valve 141 is provided on the second cleaning pipe 140. One end of the third cleaning pipe 150 communicates with the second discharge pipe 123, and the other end communicates with the cleaning liquid pumping device 100. A second cleaning valve 151 is provided on the third cleaning pipe 150. It can be understood that during the transportation of the material, both the first cleaning valve 141 and the second cleaning valve 151 are in the closed state to prevent the material from entering the second cleaning pipe 140 and the third cleaning pipe 150. A third water pump 154 may be connected to the third cleaning pipe 150 to drive the fluid in the third cleaning pipe 150 to flow towards the cleaning liquid pumping device 100.

[0059] In some embodiments, a first discharge valve 1131 is provided on the first discharge pipe 113. The first discharge valve 1131 is located between the discharge port of the second tank 121 and the first conveying valve 131 to control the on-off of the first discharge pipe 113. A third discharge valve 1241 is provided on the third discharge pipe 124. The third discharge valve is located upstream of the second cleaning pipe to control the on-off of the third discharge pipe 124.

[0060] During the cleaning process, the cleaning liquid in the cleaning liquid pumping device 100 is transported to the second tank 121 through the first cleaning pipe 122 to clean the second tank 121. The cleaning liquid in the second tank 121 is output from the second discharge pipe 123 to clean the second discharge pipe 123 and the second discharge valve 1231.

[0061] Further, when only the second discharge pipe 123 needs to be cleaned, as Figure 2As shown, the arrows in the figure indicate the flow direction of the cleaning liquid. The first feeding valve 131 and the third discharging valve 1241 are in the closed state, the second cleaning valve 151 is in the open state, and the cleaning liquid in the second discharging pipe 123 flows into the third cleaning pipe 150 and is then recycled to the cleaning liquid pumping device 100. It can be understood that a cleaning tank and a recycling tank can be provided in the cleaning liquid pumping device 100 to store unused cleaning liquid and recycled cleaning liquid respectively.

[0062] When the third discharging pipe 124 needs to be cleaned, as Figure 3 shown, the arrows in the figure indicate the flow direction of the cleaning liquid. The third discharging valve 1241 is in the open state, the first feeding valve 131 and the second cleaning valve 151 are in the closed state, and the cleaning liquid flows from the second discharging pipe 123 into the third discharging pipe 124 to clean the third discharging pipe 124 and the third discharging valve 1241, and the cleaning liquid is sent to the next-level storage tank to clean the next-level storage tank. When the first storage tank 110 needs to be cleaned, as Figure 4 shown, the solid arrows in the figure indicate the flow direction of the cleaning liquid from the cleaning liquid pumping device 100 to the first tank body 111, and the hollow arrows indicate the flow direction of the cleaning liquid from the first tank body 111 to the next-level storage tank. The third discharging valve 1241, the first cleaning valve 141, and the first discharging valve 1131 are in the open state, and the first feeding valve 131 and the second cleaning valve 151 are in the closed state. The cleaning liquid is conveyed from the second discharging pipe 123 to the third discharging pipe 124, and the cleaning liquid in the third discharging pipe 124 is conveyed to the first tank body 111 through the second cleaning pipe 140 to clean the first tank body 111. Then, the inflow of the cleaning liquid in the first tank body 111 into the first discharging pipe 113 is closed to clean the first discharging pipe 113, the first feeding valve 131, and the first discharging valve 1131. Then, the second discharging valve 1231 and the first cleaning valve 141 are closed, the first feeding valve 131 is opened, and the cleaning liquid in the first discharging pipe 113 is conveyed to the next-level storage tank through the second discharging pipe 123 and the third discharging pipe 124 for cleaning.

[0063] The cleaning liquid pumping device 100 is communicated with the second tank body 121 through the first cleaning pipe 122, and the second cleaning pipe 140 and the third cleaning pipe 150 form a loop among the cleaning liquid pumping device 100, the first storage tank 110 and the second storage tank 120, so that the cleaning liquid can flow bidirectionally between the first storage tank 110 and the second storage tank 120 to perform bidirectional flushing on the first discharge pipe 113 and the second discharge pipe 123, reduce cleaning dead corners and improve the cleaning effect. During the cleaning process, only some pipelines and valves can be cleaned according to requirements, simplifying the cleaning process. For example, only the second tank body 121, the second discharge pipe 123 and the second discharge valve 1231 can be cleaned, and then the cleaning liquid is recovered from the third cleaning pipe 150 to the cleaning liquid pumping device 100.

[0064] According to the liquid storage tank cleaning system of the embodiment of the present invention, it is communicated with the second storage tank 120 through the cleaning liquid pumping device 100, and a loop is formed among the cleaning liquid pumping device 100, the first storage tank 110 and the second storage tank 120 through the second cleaning pipe 140 and the third cleaning pipe 150, so that the cleaning liquid can flow bidirectionally between the first storage tank 110 and the second storage tank 120 to perform bidirectional flushing on the first discharge pipe 113 and the second discharge pipe 123, reduce cleaning dead corners and improve the cleaning effect.

[0065] Figure 7 As shown, in which the solid arrow in the figure indicates the flow direction of the cleaning liquid from the cleaning liquid pumping device 100 to the first tank body 111 during the conveying process, and the hollow arrow indicates the flow direction of the cleaning liquid from the first tank body 111 to the next-level storage tank during the conveying process. According to some embodiments of the present invention, the liquid storage tank cleaning system further includes a reflux pipe 160. One end of the reflux pipe 160 is communicated with the first discharge pipe 113 and is located downstream of the first discharge valve 1131, and the other end of the reflux pipe 160 is communicated with the third discharge pipe 124 and is located downstream of the second cleaning pipe 140. In this way, the cleaning liquid for cleaning the first tank body 111, the first discharge pipe 113 and the first discharge valve 1131 can flow into the third discharge pipe 124 through the reflux pipe 160 and then be conveyed to the next-level storage tank, without being conveyed to the third discharge pipe 124 through the second discharge pipe 123, reducing the occupied time of the second discharge pipe 123, simplifying the cleaning process, and the cleaning liquid can be continuously provided through the second tank body 121 and the second discharge pipe 123.

[0066] According to some embodiments of the application, a first reflux valve 161 and a second reflux valve 162 are provided on the reflux pipe 160. The first reflux valve 161 is provided at the connection between the reflux pipe 160 and the first discharge pipe 113, and the second reflux valve 162 is provided at the connection between the reflux pipe 160 and the third discharge pipe 124 to prevent the material from entering the reflux pipe 160 during material transportation. In some embodiments, a protection valve 1244 is provided on the third discharge pipe 124. The protection valve 1244 is located between the second cleaning pipe 140 and the reflux pipe 160 to prevent the cleaning liquid in the reflux pipe 160 from flowing into the second cleaning pipe 140.

[0067] As Figure 1 described, according to some embodiments of the present invention, the second cleaning pipe 140 has a connecting branch pipe 142. The connecting branch pipe 142 is connected to the feed pipe 112, and a third cleaning valve 143 is provided on the connecting branch pipe 142. During the cleaning process, the third cleaning valve 143 can be opened to allow the cleaning liquid in the second cleaning pipe 140 to flow into the feed pipe 112 through the connecting branch pipe 142 and then into the first tank 111 to clean the feed pipe 112.

[0068] According to some embodiments of the present application, a filter 152 is provided on the third cleaning pipe 150. The filter 152 is closer to the cleaning liquid pumping device 100 than the second cleaning valve 151. Further, the second cleaning valve 151 is closer to the second discharge pipe 123 than the third water pump 154, that is, the filter 152 is located between the second cleaning valve 151 and the third water pump 154 to filter the cleaning liquid. In some embodiments, a check valve 153 is provided at the connection between the third cleaning pipe 150 and the cleaning liquid pumping device 100 to prevent the cleaning liquid in the cleaning liquid pumping device 100 from flowing into the third cleaning pipe 150.

[0069] According to some embodiments of the present invention, a first flow meter 1121 is provided on the feed pipe 112, and a second flow meter 1245 is provided on the third discharge pipe 124. The second flow meter 1245 is located downstream of the third discharge valve 1241. Further, the third discharge valve 1241 is located downstream of the second water pump 1246. The flow rate of the material in the feed pipe 112 is detected by the first flow meter 1121, and the flow rate of the material output from the second storage tank 120 is detected by the second flow meter 1245, so as to monitor the amount of the remaining material in the first storage tank 110 and the second storage tank 120, facilitating timely cleaning.

[0070] According to some embodiments of the present invention, a fourth discharge valve 1242 is provided on the third discharge pipe 124, and the fourth discharge valve 1242 is located between the third discharge valve 1241 and the second cleaning pipe 140. The liquid storage tank cleaning system further includes a fourth cleaning pipe 170. One end of the fourth cleaning pipe 170 is communicated with the third discharge pipe 124 and is located between the third discharge valve 1241 and the fourth discharge valve 1242. During the cleaning process, the third discharge valve 1241 can be opened and the fourth discharge valve 1242 can be closed, so that the cleaning liquid in the fourth cleaning pipe 170 enters the second discharge pipe 123 through the third discharge pipe 124; or, the third discharge valve 1241 can be closed and the fourth discharge valve 1242 can be opened, so that the cleaning liquid in the fourth cleaning pipe 170 cleans the third discharge pipe 124, or the cleaning liquid in the fourth cleaning pipe 170 enters the second cleaning pipe 140 through the third discharge pipe 124 to clean the first storage tank 110.

[0071] The other end of the fourth cleaning pipe 170 is communicated with the cleaning liquid pumping device 100. The fourth cleaning pipe 170 is provided with a liquid inlet valve 171 to control the opening or closing of the fourth cleaning pipe 170. The cleaning liquid can be transported to the third discharge pipe 124 through the fourth cleaning pipe 170, and then the second discharge pipe 123, the feed pipe 112, the first tank body 111 or the first discharge pipe 113 can be cleaned. On the one hand, during the cleaning process, the user can select to input the cleaning liquid from the first cleaning pipe 122 or transport the cleaning liquid from the fourth cleaning pipe 170 according to the needs, so as to simplify the cleaning process; on the other hand, different cleaning liquids can be respectively input into the first cleaning pipe 122 and the fourth cleaning pipe 170 for cleaning simultaneously, so as to improve the cleaning effect and cleaning efficiency.

[0072] According to some embodiments of the present invention, a fifth discharge valve 1243 is provided on the third discharge pipe 124, and the fifth discharge valve 1243 is located downstream of the third discharge valve 1241. The liquid storage tank cleaning system further includes a first pulse pipe 180. One end of the first pulse pipe 180 is communicated with the third discharge pipe 124 and is located between the third discharge valve 1241 and the fifth discharge valve 1243, and the other end is communicated with the cleaning liquid pumping device 100. A first pulse valve 181 is provided on the first pulse pipe 180.

[0073] As Figure 1 shown, the fifth discharge valve 1243 is located between the third discharge valve 1241 and the fourth cleaning pipe 170. As Figure 5As shown, the arrows in the figure indicate the flow direction of the cleaning liquid. During the cleaning process, the second discharge valve 1231, the third discharge valve 1241, and the first pulse valve 181 are all in the open state, and the first feeding valve 131, the fifth discharge valve 1243, and the second cleaning valve 151 are all in the closed state. At this time, the cleaning liquid pumping device 100 periodically conveys the cleaning liquid to the first cleaning pipe 122. After the cleaning liquid cleans the first cleaning pipe 122, the second tank body 121, and the second discharge valve 1231, it enters the third discharge pipe 124, and cleans the third discharge valve 1241 and the fifth discharge valve 1243. Finally, the cleaning liquid is recycled to the cleaning liquid pumping device 100 through the first pulse valve 181 and the first pulse pipe 180. Thus, the pulse cleaning of the second tank body 121, the second discharge valve 1231, the third discharge valve 1241, and the fifth discharge valve 1243 is realized, and the cleaning effect is improved. In some embodiments, the inlet valve 171, the fifth discharge valve 1243, and the first pulse valve 181 can also be opened, the third discharge valve 1241 and the fourth discharge valve 1242 can be closed, and the cleaning liquid pumping device 100 periodically conveys the cleaning liquid through the fourth cleaning pipe 170 to perform pulse cleaning on the fifth discharge valve 1243 and the third discharge valve 1241. Of course, the above two pulse cleaning processes can also be carried out successively to perform two-way pulse cleaning on a section of the third discharge valve 1241, the fifth discharge valve 1243, and the third discharge pipe 124 to improve the cleaning effect.

[0074] According to some embodiments of the present invention, a second feeding valve 132 is provided on the first discharge pipe 113, and the second feeding valve 132 is located downstream of the first feeding valve 131. The liquid storage tank cleaning system further includes a second pulse pipe 182. One end of the second pulse pipe 182 is communicated with the first discharge pipe 113 and is located between the first feeding valve 131 and the second feeding valve 132, and the other end is communicated with the cleaning liquid pumping device 100. A second pulse valve 183 is provided on the second pulse pipe 182.

[0075] During the cleaning process, as Figure 6As shown, the arrows in the figure indicate the flow direction of the cleaning liquid. The second discharge valve 1231, the second feeding valve 132, and the second pulse valve 183 are all in the open state, and the third discharge valve 1241, the second cleaning valve 151, and the first feeding valve 131 are all in the closed state. At this time, the cleaning liquid pumping device 100 periodically conveys the cleaning liquid to the first cleaning pipe 122. The cleaning liquid cleans the second tank body 121, the second discharge pipe 123, the second discharge valve 1231, the second feeding valve 132, and the first feeding valve 131. Finally, the cleaning liquid is recycled to the cleaning liquid pumping device 100 through the second pulse pipe 182 and the second pulse valve 183. Thus, pulsed cleaning of the second tank body 121, the second discharge pipe 123, the second discharge valve 1231, the first feeding valve 131, the second feeding valve 132, and a section of the first discharge pipe 113 is achieved. Of course, according to requirements, the cleaning liquid can also be input from the fourth cleaning pipe 170. At this time, the liquid inlet valve 171, the fifth discharge valve 1243, the third discharge valve 1241, the second feeding valve 132, and the second pulse valve 183 are all in the open state, and the fourth discharge valve 1242, the second discharge valve 1231, the second cleaning valve 151, and the first feeding valve 131 are all in the closed state.

[0076] A liquid storage tank cleaning method according to an embodiment of the present invention, the liquid storage tank cleaning method is applied to the liquid storage tank cleaning system as described above. The liquid storage tank cleaning system further includes a controller, and the controller is communicatively connected to the cleaning liquid pumping device 100, the first discharge valve 1131, the second discharge valve 1231, the third discharge valve 1241, the fifth discharge valve 1243, the first cleaning valve 141, the second cleaning valve 151, the first feeding valve 131, the first pulse valve 181, the second feeding valve 132, and the second pulse valve 183. The controller is used to execute the liquid storage tank cleaning method.

[0077] The liquid storage tank cleaning method includes: when pulsed cleaning the second tank body 121, the second discharge valve 1231, the third discharge valve 1241, and the fifth discharge valve 1243, controlling the second discharge valve 1231, the third discharge valve 1241, and the first pulse valve 181 to be all open, controlling the second feeding valve 132 and the second cleaning valve 151 to be all closed, the cleaning liquid pumping device 100 periodically pumps the cleaning liquid to the first cleaning pipe 122 within a first set time, and the first pumping cycle of the cleaning liquid pumping device 100 is less than the first set time.

[0078] According to some embodiments of the present invention, the method for cleaning a liquid storage tank further includes: when pulse cleaning the second tank body 121, the second discharge valve 1231, the second discharge pipe 123, the first feeding valve 131, and the second feeding valve 132, controlling the second discharge valve 1231, the second feeding valve 132, and the second pulse valve 183 to be all opened, controlling the third discharge valve 1241, the first feeding valve 131, and the second cleaning valve 151 to be all closed, and the cleaning liquid pumping device 100 periodically pumps cleaning liquid into the first cleaning pipe 122 within a second set time, and the second pumping cycle of the cleaning liquid pumping device 100 is less than the second set time.

[0079] As Figure 1 shown, for the convenience of understanding the solution of the present application, some embodiments of the working process of the liquid storage tank cleaning system are provided below:

[0080] According to the way the cleaning liquid pumping device 100 conveys the cleaning liquid, the cleaning process can be divided into a pulse cleaning process and a continuous cleaning process. Among them, during the pulse cleaning process, within a preset working duration, the cleaning liquid pumping device 100 conveys the cleaning liquid to the first cleaning pipe 122 or the fourth cleaning pipe 170 at a certain cycle; during the continuous cleaning process, within the preset working duration, the cleaning liquid pumping device 100 continuously conveys the cleaning liquid to the first cleaning pipe 122 or the fourth cleaning pipe 170.

[0081] During the pulse cleaning process, when it is necessary to perform pulse cleaning on the second tank 121, the second discharge valve 1231, the second discharge pipe 123, the third discharge valve 1241, and the fifth discharge valve 1243, the second discharge valve 1231, the third discharge valve 1241, the first pulse valve 181, the second feeding valve 132, and the second pulse valve 183 are all in the open state, and the fifth discharge valve 1243, the first feeding valve 131, the second cleaning valve 151, and the liquid inlet valve 171 are all in the closed state. The cleaning liquid is input into the second tank 121 through the first cleaning pipe 122 to clean the second tank 121; then, the cleaning liquid enters the second discharge pipe 123 and cleans the second discharge valve 1231; a part of the cleaning liquid in the second discharge pipe 123 flows into the third discharge pipe 124 to clean the third discharge valve 1241 and the fifth discharge valve 1243, and the cleaning liquid in the third discharge pipe 124 finally flows back into the cleaning liquid pumping device 100 through the first pulse pipe 180; another part of the cleaning liquid in the second discharge pipe 123 flows into the first discharge pipe 113 to clean the second discharge pipe 123, the second feeding valve 132, and the first feeding valve 131, and the cleaning liquid in the first discharge pipe 113 finally flows back into the cleaning liquid pumping device 100 through the second pulse pipe 182. It can be understood that the third discharge valve 1241, the fifth discharge valve 1243 and the first feeding valve 131, the second discharge valve 1231 may not be pulse-cleaned simultaneously. At this time, the third discharge valve 1241 or the first feeding valve 131 can be closed. For the specific pulse cleaning process, reference can be made to the above pulse cleaning process, which will not be elaborated here.

[0082] When it is necessary to perform pulse cleaning on the third discharge valve 1241 and the fifth discharge valve 1243, and it is not necessary to perform pulse cleaning on the second tank 121, the second discharge valve 1231, and the second discharge pipe 123, the liquid inlet valve 171, the fifth discharge valve 1243, the third discharge valve 1241, the second feeding valve 132, and the second pulse valve 183 are all in the open state, and the second discharge valve 1231, the first pulse valve 181, the second cleaning valve 151, the first feeding valve 131, and the fourth discharge valve 1242 are all in the closed state. The cleaning liquid is transported to the third discharge pipe 124 through the fourth cleaning pipe 170 to clean the fifth discharge valve 1243 and the third discharge valve 1241; the cleaning liquid in the third discharge pipe 124 flows into the first discharge pipe 113 through the second discharge pipe 123 to clean the second discharge pipe 123, the second feeding valve 132, and the first feeding valve 131. Finally, the cleaning liquid flows back into the cleaning liquid pumping device 100 through the second pulse pipe 182.

[0083] During the continuous cleaning process, when the cleaning liquid pumping device 100 transports the cleaning liquid through the first cleaning pipe 122, the first water pump 1132, the second water pump 1246, the third water pump 154, the second discharge valve 1231, the third discharge valve 1241, the fifth discharge valve 1243, the fourth discharge valve 1242, the first cleaning valve 141, the third cleaning valve 143, the first discharge valve 1131, the first reflux valve 161, the second reflux valve 162, and the second cleaning valve 151 are all in the open state, and the first pulse valve 181, the liquid inlet valve 171, the protection valve 1244, the feed valve 1122, the first material conveying valve 131, and the second material conveying valve 132 are all in the closed state. At this time, the cleaning liquid is input into the second tank 121 through the first cleaning pipe 122 to clean the second tank 121; then, the cleaning liquid flows into the second discharge pipe 123 and cleans the second discharge valve 1231; a part of the cleaning liquid in the second discharge pipe 123 flows to the third cleaning pipe 150 to clean the second discharge pipe 123, and the cleaning liquid in the third cleaning pipe 150 is finally recycled to the cleaning liquid pumping device 100. Another part of the cleaning liquid in the second discharge pipe 123 flows to the third discharge pipe 124 and cleans the third discharge valve 1241, the fifth discharge valve 1243, the fourth discharge valve 1242, and the third discharge pipe 124; then, the cleaning liquid in the third discharge pipe 124 flows to the second cleaning pipe 140, and a part of the cleaning liquid in the second cleaning pipe 140 flows into the first tank 111, and another part of the cleaning liquid flows into the first tank 111 through the feed pipe 112, thereby cleaning the feed pipe 112 and the first tank 111; the cleaning liquid in the first tank 111 flows to the first discharge pipe 113 and cleans the first discharge valve 1131 and the first discharge pipe 113; the cleaning liquid in the first discharge pipe 113 flows through the reflux pipe 160 to the downstream of the protection valve 1244 on the third discharge pipe 124, and then flows to the next-level storage tank or to the designated recycling location.

[0084] When the cleaning liquid pumping device 100 transports the cleaning liquid through the fourth cleaning pipe 170, the liquid inlet valve 171, the fifth discharge valve 1243, the third discharge valve 1241, the second cleaning valve 151, the fourth discharge valve 1242, the first cleaning valve 141, the third cleaning valve 143, the first discharge valve 1131, the first reflux valve 161, and the second reflux valve 162 are all in the open state, and the first pulse valve 181, the second discharge valve 1231, the second material conveying valve 132, the protection valve 1244, the feed valve 1122, and the first material conveying valve 131 are all in the closed state.

[0085] When only the second discharge pipe 123 and the third discharge pipe 124 need to be cleaned, the third discharge valve 1241, the fifth discharge valve 1243, the second cleaning valve 151, the fourth discharge valve 1242, and the protection valve 1244 can be in the open state, the first cleaning valve 141, the first pulse valve 181, the second reflux valve 162, and the second feeding valve 132 can be in the closed state. The states of the second discharge valve 1231 and the liquid inlet valve 171 can be adjusted according to the input path of the cleaning liquid. When the cleaning liquid is input from the first cleaning pipe 122, the second discharge valve 1231 is opened. When the cleaning liquid is input from the fourth cleaning pipe 170, the second liquid inlet valve 171 is opened.

[0086] It can be understood that according to production requirements, the above pulse cleaning process can be arranged before or after the continuous cleaning process, or arranged between two continuous cleaning processes, so as to improve the cleaning effect.

[0087] In summary, the embodiment of the present invention provides a liquid storage tank cleaning system. The cleaning liquid can flow bidirectionally between the first storage tank 110 and the second storage tank 120, and can perform bidirectional flushing on the first discharge pipe 113 and the second discharge pipe 123, reducing cleaning dead corners and improving the cleaning effect.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and substitutions can still be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A liquid tank cleaning system, characterized in that: include: A cleaning liquid pumping device (100), wherein the cleaning liquid pumping device (100) is used to provide cleaning liquid; A first storage tank (110), the first storage tank (110) comprising a first tank body (111) and a feed pipe (112) and a first discharge pipe (113) both connected to and in communication with the first tank body (111), one end of the feed pipe (112) being in communication with the feed port of the first tank body (111), the other end of the feed pipe (112) being in communication with a feeding device, one end of the first discharge pipe (113) being in communication with the discharge port of the first tank body (111), and a first delivery valve (131) being provided on the first discharge pipe (113); A second storage tank (120), wherein the second storage tank (120) includes a second tank body (121) a first cleaning pipe (122), a second discharge pipe (123) and a third discharge pipe (124), wherein both ends of the first cleaning pipe (122) are respectively connected to the cleaning liquid pumping device (100) and the second tank body (121), and the second discharge pipe (123) is provided with a second discharge valve (1231). The two ends of the second discharge pipe (123) are respectively connected to the discharge port of the second tank body (121) and the other end of the first discharge pipe (113). One end of the third discharge pipe (124) is connected to the second discharge pipe (123) and is located between the second discharge valve (1231) and the first discharge pipe (113), and the other end is used to communicate with the next-stage storage tank; a second cleaning pipe (140), one end of the second cleaning pipe (140) being in communication with the third discharge pipe (124), and the other end of the second cleaning pipe (140) being in communication with the feed port of the first tank body (111), and a first cleaning valve (141) being provided on the second cleaning pipe (140); A third cleaning pipe (150), one end of the third cleaning pipe (150) is connected to the second discharge pipe (123), and the other end is connected to the cleaning liquid pumping device (100), and a second cleaning valve (151) is provided on the third cleaning pipe (150).

2. The liquid tank cleaning system according to claim 1, characterized in that: The first discharge pipe (113) is provided with a first discharge valve (1131), and the first discharge valve (1131) is located between the discharge port of the second tank body (121) and the first delivery valve (131); The third discharge pipe (124) is provided with a third discharge valve (1241), and the third discharge valve (1241) is located upstream of the second cleaning pipe (140).

3. The liquid tank cleaning system according to claim 2, characterized in that: The liquid storage tank cleaning system further comprises a reflux pipe (160), one end of which is in communication with the first discharge pipe (113) and is located downstream of the first discharge valve (1131). The other end is communicated with the third discharge pipe (124) and is located downstream of the second cleaning pipe (140).

4. The liquid tank cleaning system according to claim 3, characterized in that: The reflux pipe (160) is provided with a first reflux valve (161) and a second reflux valve (162); the first reflux valve (161) is provided at the connection point between the reflux pipe (160) and the first discharge pipe (113); the second reflux valve (162) is provided at the connection point between the reflux pipe (160) and the third discharge pipe (124).

5. The liquid tank cleaning system according to claim 3, characterized in that: The third discharge pipe (124) is provided with a protection valve (1244), and the protection valve (1244) is located between the second cleaning pipe (140) and the reflux pipe (160).

6. The liquid tank cleaning system according to claim 1, characterized in that: The second cleaning pipe (140) has a connecting branch pipe (142), the connecting branch pipe (142) is connected to the feed pipe (112), and a third cleaning valve (143) is provided on the connecting branch pipe (142).

7. The liquid tank cleaning system according to claim 2, characterized in that: The third discharge pipe (124) is provided with a fourth discharge valve (1242), and the fourth discharge valve (1242) is located between the third discharge valve (1241) and the second cleaning pipe (140). The liquid storage tank cleaning system also includes a fourth cleaning pipe (170), one end of the fourth cleaning pipe (170) is connected to the third discharge pipe (124) and is located between the third discharge valve (1241) and the fourth discharge valve (1242), and the other end is connected to the cleaning liquid pumping device (100), and the fourth cleaning pipe (170) is provided with a liquid inlet valve (171).

8. The liquid tank cleaning system according to claim 2, characterized in that: The third discharge pipe (124) is provided with a fifth discharge valve (1243), and the fifth discharge valve (1243) is located downstream of the third discharge valve (1241). The liquid storage tank cleaning system also includes a first pulse tube (180), one end of which is connected to the third discharge pipe (124) and is located between the third discharge valve (1241) and the fifth discharge valve (1243), and the other end of which is connected to the cleaning liquid pumping device (100), and a first pulse valve (181) is provided on the first pulse tube (180).

9. The liquid tank cleaning system according to claim 1, characterized in that: The first discharge pipe (113) is provided with a second delivery valve (132), and the second delivery valve (132) is located downstream of the first delivery valve (131). The liquid storage tank cleaning system also includes a second pulse tube (182), one end of which is connected to the first discharge pipe (113) and is located between the first delivery valve (131) and the second delivery valve (132), and the other end of which is connected to the cleaning liquid pumping device (100), and a second pulse valve (183) is provided on the second pulse tube (182).

10. A method for cleaning a liquid storage tank, characterized in that: The liquid tank cleaning method is applied to the liquid tank cleaning system according to any one of claims 1 to 9, wherein the third discharge pipe (124) is provided with a third discharge valve (1241) and a fifth discharge valve (1243), and the fifth discharge valve (1243) is located downstream of the third discharge valve (1241). The liquid tank cleaning system further comprises a first pulse tube (180), one end of the first pulse tube (180) is connected to the third discharge pipe (124) and is located between the third discharge valve (1241) and the fifth discharge valve (1243), and the other end of the first pulse tube (180) is connected to the cleaning liquid pumping device (100), and the first pulse tube (180) is provided with a first pulse valve (181); The first discharge pipe (113) is provided with a second delivery valve (132), and the second delivery valve (132) is located downstream of the first delivery valve (131). The liquid storage tank cleaning system also includes a second pulse tube (182), one end of the second pulse tube (182) is communicated with the first discharge pipe (113) and is located between the first delivery valve (131) and the second delivery valve (132), and the other end of the second pulse tube (182) is communicated with the cleaning liquid pumping device (100), and the second pulse tube (182) is provided with a second pulse valve (183); The liquid storage tank cleaning method comprises: When pulse cleaning is performed on the second tank body (121), the second discharge valve (1231), the third discharge valve (1241) and the fifth discharge valve (1243), the second discharge valve (1231), the third discharge valve (1241) and the first pulse valve (181) are all controlled to be opened, and the second feed valve (132), the fifth discharge valve (1243) and the second cleaning valve (151) are all controlled to be closed, and the cleaning liquid pumping device (100) periodically pumps cleaning liquid to the first cleaning pipe (122) within a first set time, and a first pumping cycle of the cleaning liquid pumping device (100) is less than the first set time.

11. The liquid storage tank cleaning method according to claim 10, characterized in that: The liquid storage tank cleaning method also includes: When pulse cleaning is performed on the second tank body (121), the second discharge valve (1231), the second discharge pipe (123), the first feed valve (131) and the second feed valve (132), the second discharge valve (1231), the second feed valve (132) and the second pulse valve (183) are all controlled to be opened, and the third discharge valve (1241), the first feed valve (131) and the second cleaning valve (151) are all controlled to be closed, and the cleaning liquid pumping device (100) periodically pumps cleaning liquid to the first cleaning pipe (122) within a second set time, and the second pumping period of the cleaning liquid pumping device (100) is less than the second set time.

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