Self-cleaning feeding system

Abstract

The utility model discloses a self-cleaning feeding system which comprises a first filtering assembly, a buffer tank, a delivery pump and a second filtering assembly which are sequentially communicated in the feeding direction, the first filtering assembly is communicated with the buffer tank through a first pipeline, the delivery pump is communicated with the second filtering assembly through a second pipeline, and the self-cleaning feeding system further comprises a cleaning assembly and a control assembly, the tank is communicated with the buffer tank; the first reversing valve is arranged on the second pipeline; one end of the third pipeline is communicated with the first reversing valve, and the other end is communicated with the first pipeline; the first reversing valve is suitable for communicating the conveying pump and the second filtering assembly or communicating the conveying pump and the third pipeline; one end of the fourth pipeline is communicated with the feeding end of the first filtering assembly, and the other end is communicated with the first pipeline; wherein the connection point of the fourth pipeline and the first pipeline is located between the third pipeline and the buffer tank. The technical problems that when an existing feeding system cleans a pipeline, the pipeline needs to be dismantled, the cleaning efficiency is low, material leakage is likely to happen, and the cleaning difficulty is large are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery coating systems, in particular to a self-cleaning feeding system. Background Art

[0002] In the field of lithium battery coating, the quality requirements for pipeline fluids are high, and they often need to go through multiple filtrations and impurities removal to finally be made into finished products. The fluids they transport have the characteristics of good quality and high value. Therefore, in the field of traditional pipeline fluid transportation, pipeline cleaning is often a problem. In order to pursue a highly stable coating process, the existing feeding system often uses a screw pump as a power source to transport fluids. Due to the particularity of its structure, the stator and rotor will produce a shear force on the slurry during operation. Therefore, the slurry needs to have a certain viscosity during operation to lubricate the stator and rotor to avoid wear. The solvent viscosity of the positive and negative electrode slurries is extremely low. Therefore, in the existing feeding system, when cleaning the pipeline, the remaining fluid is first pumped out of the feeding system through a screw pump. The pipelines need to be dismantled and cleaned one by one. The cleaning efficiency is low, and leakage and other problems are very likely to occur during the disassembly process, increasing the difficulty of cleaning. Utility Model Content

[0003] The utility model provides a self-cleaning feeding system, which solves the technical problems of the existing feeding system that the pipeline needs to be dismantled when cleaning the pipeline, the cleaning efficiency is low, the leakage is easy to occur, and the cleaning is difficult.

[0004] In view of this, the utility model provides a self-cleaning feeding system, comprising a first filter assembly, a buffer tank, a delivery pump and a second filter assembly which are sequentially connected along a feeding direction, wherein the first filter assembly and the buffer tank are connected via a first pipeline, and the delivery pump and the second filter assembly are connected via a second pipeline, and further comprising:

[0005] A cleaning component, connected to the cache tank and suitable for introducing cleaning liquid into the cache tank;

[0006] A first reversing valve, arranged on the second pipeline;

[0007] A third pipeline, one end of which is connected to the first reversing valve, and the other end of which is connected to the first pipeline; wherein the first reversing valve is suitable for connecting the delivery pump and the second filter assembly or connecting the delivery pump and the third pipeline;

[0008] A fourth pipeline has one end connected to the feed end of the first filter assembly and the other end connected to the first pipeline; wherein the connection point between the fourth pipeline and the first pipeline is located between the third pipeline and the cache tank.

[0009] Optionally, a second reversing valve is provided on the first pipeline, the second reversing valve is located between the third pipeline and the cache tank, and the fourth pipeline is connected to the first pipeline through the second reversing valve; wherein the second reversing valve is suitable for connecting the first filter assembly and the cache tank or connecting the fourth pipeline and the cache tank;

[0010] And / or, the feed end of the first filter assembly is connected to the fourth pipeline through a third reversing valve, and is suitable for being connected to the fourth pipeline or an external feed port through the third reversing valve.

[0011] Optionally, a fourth reversing valve is further provided on the first pipeline, and the fourth reversing valve is located between the third pipeline and the first filter assembly;

[0012] And / or, a fifth reversing valve is provided at one end of the third pipeline connected to the first pipeline, and is suitable for controlling the connection or disconnection between the third pipeline and the first pipeline through the fifth reversing valve.

[0013] Optionally, the first filter assembly includes a dynamic filter and an iron remover which are connected in sequence, the feed end of the dynamic filter is connected to the fourth pipeline, and the discharge end of the iron remover is connected to the cache tank through the first pipeline.

[0014] Optionally, the bottom of the dynamic filter and the iron remover are both provided with a first discharge ball valve, which is suitable for discharging material through the first discharge ball valve.

[0015] Optionally, it also includes a fifth pipeline and a sixth pipeline; a sixth reversing valve and a seventh reversing valve are sequentially provided on the second pipeline along the feed direction, and the sixth reversing valve and the seventh reversing valve are located between the delivery pump and the first reversing valve; one end of the fifth pipeline is connected to the sixth reversing valve, and the other end is connected to the discharge end of the second filter assembly; one end of the sixth pipeline is connected to the seventh reversing valve, and the other end is connected to the cache tank.

[0016] Optionally, an eighth reversing valve is provided on the fifth pipeline, a ninth reversing valve is provided on the sixth pipeline, and the eighth reversing valve is connected to the ninth reversing valve through the seventh pipeline;

[0017] And / or, the discharge end of the second filter assembly is connected to the fifth pipeline via a coating valve, and is suitable for being connected to the fifth pipeline or an external coating device via the coating valve.

[0018] Optionally, the second filter assembly includes a metal filter, a mass flow meter and a capsule filter which are connected in sequence; the discharge end of the capsule filter is connected to the fifth pipeline, and the feed end of the metal filter is connected to the second pipeline.

[0019] Optionally, a second discharge ball valve is provided at the bottom of the metal filter, and the material is suitable for being discharged through the second discharge ball valve;

[0020] And / or, the fifth pipeline and the mass flow meter are both detachably connected to the capsule filter.

[0021] Optionally, the feed end of the delivery pump is connected to the bottom of the buffer tank through a seventh pipeline; a tenth reversing valve is provided on the seventh pipeline, and the tenth reversing valve is suitable for connecting the delivery pump and the buffer tank or connecting the buffer tank and an external discharge device;

[0022] And / or, the cleaning component includes a plurality of cleaning nozzles, the plurality of cleaning nozzles are arranged in the buffer tank, and the feed ends of the cleaning nozzles are suitable for connecting to an external liquid supply device.

[0023] The technical solution of the utility model has the following advantages:

[0024] In the utility model, when slurry is conveyed, the conveying pump and the second filter component are connected through the first reversing valve, and the conveying pump and the third pipeline are not connected, that is, the first reversing valve in the figure is connected, and the slurry passes through the first filter component, the buffer tank, the conveying pump, the first reversing valve and the second filter component in sequence under the action of the conveying pump, and then flows out from the discharge end of the second filter component for coating. When cleaning is required, the cleaning component can be connected to the external liquid supply equipment, and then the conveying pump can be used to convey the cleaning liquid in a high-pressure state for cleaning, thereby completing automatic cleaning, reducing the difficulty of cleaning and improving the cleaning efficiency. When the second pipeline is controlled to be connected to the second filter component by the first reversing valve, the cleaning liquid in the cache tank passes through the cache tank, the conveying pump, the second pipeline, the first reversing valve and the second filter component in sequence. Cleaning, to achieve forward cleaning of the second pipeline and the second filter component. When the first reversing valve is used to control the delivery pump and the third pipeline to be connected, and the delivery pump and the second filter component are not connected, that is, the - direction of the first reversing valve in the figure is connected, the cleaning liquid in the cache tank passes through the cache tank, the delivery pump, the second pipeline, the first reversing valve, the third pipeline, the first filter component and the fourth pipeline in turn, and then returns to the cache tank for circulation cleaning, thereby achieving reverse cleaning of the first filter component, saving resources, and cyclically cleaning multiple times to improve the cleaning effect; the self-cleaning feeding system provided by the utility model can realize automatic cleaning of the first filter component, the cache tank, the delivery pump and the second filter component, as well as the pipelines between them, thereby realizing the self-cleaning function, avoiding disassembly and cleaning, saving time and effort, and improving cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A structural schematic diagram of a self-cleaning feeding system provided by the utility model;

[0027] Figure 2 It is a schematic diagram of the state of reverse circulation cleaning of the first filter component and the second filter component in a self-cleaning feeding system provided by the utility model.

[0028] Description of reference numerals:

[0029] 1. Buffer tank; 2. First reversing valve; 3. First pipeline; 4. Second reversing valve; 5. Delivery pump; 6. Second pipeline; 7. Coating valve; 8. Third reversing valve; 9. Third pipeline; 10. Fourth pipeline; 11. Fourth reversing valve; 12. Fifth reversing valve; 13. Dynamic filter; 14. Iron remover; 15. Fifth pipeline; 16. Sixth pipeline; 17. Sixth reversing valve; 18. Seventh reversing valve; 19. Eighth reversing valve; 20. Ninth reversing valve; 21. Metal filter; 22. Mass flow meter; 23. Capsule filter; 24. Tenth reversing valve; 25. Cleaning nozzle; 26. Pipeline; 27. Seventh pipeline. DETAILED DESCRIPTION

[0030] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] Example 1

[0035] See also Figure 1 and Figure 2 , the present embodiment provides a self-cleaning feeding system, comprising a first filter component, a buffer tank 1, a delivery pump 5 and a second filter component which are connected in sequence along the feeding direction, the first filter component and the buffer tank 1 are connected via a first pipeline 3, the delivery pump 5 and the second filter component are connected via a second pipeline 6, the self-cleaning feeding system also comprises: a cleaning component which is connected to the buffer tank 1 and is suitable for introducing cleaning liquid into the buffer tank 1; a first reversing valve 2 which is arranged on the second pipeline 6; a third pipeline 9 which is connected to the first reversing valve 2 at one end and to the first pipeline 3 at the other end; wherein the first reversing valve 2 is suitable for connecting the delivery pump 5 and the second filter component or connecting the delivery pump 5 and the third pipeline 9; a fourth pipeline 10 which is connected to the feed end of the first filter component at one end and to the first pipeline 3 at the other end; wherein the connection point between the fourth pipeline 10 and the first pipeline 3 is located between the third pipeline 9 and the buffer tank 1.

[0036] The reversing valve is a directional control valve with more than two flow forms and more than two oil ports. It is a valve that realizes the communication, cutting and reversing of hydraulic oil flow, as well as pressure unloading and sequential action control.

[0037] It should be noted that the first reversing valve 2 is conducted in one direction each time; the cleaning component is connected to an external liquid supply device to provide cleaning liquid.

[0038] In this embodiment, when the slurry is transported, the first reversing valve 2 controls the delivery pump 5 to be connected to the second filter assembly, and the delivery pump 5 is not connected to the third pipeline 9, that is, Figure 1The 0-1 of the first reversing valve 2 is connected, and the slurry passes through the first filter component, the buffer tank 1, the delivery pump 5, the first reversing valve 2 and the second filter component in sequence under the action of the delivery pump 5, and then flows out from the discharge end of the second filter component for coating. When cleaning is required, the cleaning component can be connected to the external liquid supply equipment, and then the delivery pump 5 can be used to deliver the cleaning liquid in a high-pressure state for cleaning, so as to complete automatic cleaning, reduce the difficulty of cleaning, and improve the cleaning efficiency. When the second pipeline 6 is connected to the second filter component through the first reversing valve 2, the cleaning liquid in the cache tank 1 passes through the cache tank, the delivery pump 5, the second pipeline, the first reversing valve 2 and the second filter component in sequence for cleaning, so as to realize the forward cleaning of the second pipeline 6 and the second filter component. When the delivery pump 5 is connected to the third pipeline through the first reversing valve 2, the delivery pump 5 and the second filter component are not connected, that is, Figure 1 The 0-2 conductor of the first reversing valve 2 is connected, and the cleaning liquid in the cache tank 1 passes through the cache tank, the delivery pump 5, the second pipeline, the first reversing valve 2, the third pipeline 9, the first filter component and the fourth pipeline 10 in turn, and then returns to the cache tank for circulation cleaning, thereby realizing reverse cleaning of the first filter component and saving resources. At the same time, multiple cycles of cleaning are performed to improve the cleaning effect. The self-cleaning feeding system provided in this embodiment can realize automatic cleaning of the first filter component, the cache tank 1, the delivery pump 5 and the second filter component, as well as the pipelines between them, thereby realizing the self-cleaning function, avoiding disassembly and cleaning, saving time and effort, and improving cleaning efficiency.

[0039] Example 2

[0040] As a further improvement to Example 1, Figure 1 and Figure 2 As shown, a second reversing valve 4 is provided on the first pipeline 3, and the second reversing valve 4 is located between the third pipeline 9 and the cache tank 1, and the fourth pipeline 10 is connected to the first pipeline 3 through the second reversing valve 4; wherein, the second reversing valve 4 is suitable for connecting the first filter component and the cache tank 1 or connecting the fourth pipeline 10 and the cache tank 1.

[0041] It should be noted that the second reversing valve 4 is conducted in one direction each time.

[0042] In this embodiment, by setting the second reversing valve 4, when the first filter assembly is reversely cleaned, the second reversing valve 4 controls the first filter assembly to be disconnected from the cache tank 1 and the fourth pipeline 10 to be connected to the cache tank 1, that is, Figure 1The 2-0 of the second reversing valve 4 is connected, and when the first filter component is reversely cleaned, a part of the cleaning liquid is prevented from directly flowing back to the cache tank through the first pipeline, thereby improving the cleaning effect. The cleaning liquid flows back to the cache tank 1 from the first reversing valve 2 through the fourth pipeline 10 and then repeatedly circulates to clean the first filter component, saving resources. At the same time, multiple cycles of cleaning can be performed to improve the cleaning effect; when conveying slurry, the first filter component can be connected to the cache tank 1 and the fourth pipeline 10 can be disconnected from the cache tank 1 through the second reversing valve 4, that is, Figure 1 The 1-0 direction of the second reversing valve 4 is open to prevent a part of the slurry from flowing back to the feed end of the first filter assembly through the fourth pipeline during slurry transportation, thereby affecting the transportation effect of the slurry.

[0043] Based on the above embodiment, in a specific embodiment, the feed end of the first filter component is connected to the fourth pipeline 10 through the third reversing valve 8, and is suitable for connecting to the fourth pipeline 10 or the external feed port through the third reversing valve 8.

[0044] It should be noted that the third reversing valve 8 is conducted in one direction each time.

[0045] In this embodiment, by setting the third reversing valve 8, the feed end of the first filter component and the fourth pipeline 10 or the external feed port are switched through the third reversing valve 8, so as to facilitate the conversion from the feeding process to the cleaning process. When the slurry is transported, the feed end of the first filter component and the external feed port are connected and the feed end of the first filter component and the fourth pipeline 10 are not connected. That is, Figure 1 The 1-0 of the third reversing valve 8 is connected to prevent the slurry from flowing into the fourth pipeline 10; the third reversing valve 8 is used to control the feed end of the first filter component to be disconnected from the external feed port and the feed end of the first filter component to be connected to the fourth pipeline 10, that is, Figure 1 The 0-2 conductors of the third reversing valve 8 are open to prevent the cleaning liquid from flowing into the external feed port and contaminating the slurry. At the same time, the external cleaning liquid equipment can be connected through the third reversing valve 8, that is, the external cleaning liquid equipment is connected to the external feed port to clean the first filter component and the second filter component and the pipeline therebetween in the forward direction of the feed, thereby realizing multiple cleaning methods.

[0046] Specifically, a third discharge ball valve is provided at the bottom of the buffer tank 1, so that the slurry in the buffer tank 1 can be discharged through the third discharge ball valve before cleaning, thereby improving the cleaning effect.

[0047] Based on the above implementation, in a specific implementation, as Figure 1 As shown, a fourth reversing valve 11 is further provided on the first pipeline 3, and the fourth reversing valve 11 is located between the third pipeline 9 and the first filter assembly.

[0048] In this embodiment, by setting the fourth reversing valve 11, when coating and cleaning the first filter component are performed, the fourth reversing valve 11 remains in an open state, so that the first pipeline 3 is connected. When the reverse cleaning of the first filter component is completed, the fourth reversing valve 11 can be controlled to be in a closed state, that is, to prevent the third pipeline 9 from being connected to the first filter component. At this time, the first pipeline 3 is controlled to be connected to the cache tank 1 through the second reversing valve 4, that is, Figure 1 The 1-0 of the second reversing valve 4 is turned on, and then the third pipeline 9 in the cache tank 1 is connected to the pipeline between the second reversing valve 4 through the delivery pump 5, so as to further improve the cleaning effect.

[0049] Based on the above implementation, in a specific implementation, as Figure 1 As shown, a fifth reversing valve 12 is provided at one end of the third pipeline 9 connected to the first pipeline 3 , which is suitable for controlling the connection or disconnection between the third pipeline 9 and the first pipeline 3 through the fifth reversing valve 12 .

[0050] In this embodiment, by setting the fifth pipeline 15 on the third pipeline 9, when conveying slurry for coating, the fifth reversing valve 12 can be controlled to be in a closed state, and the third pipeline 9 and the first pipeline 3 are disconnected to prevent the slurry from entering the third pipeline 9. When the first filter component is reversely cleaned through the third pipeline 9, the cleaning effect is affected. When cleaning is performed, the fifth reversing valve 12 is controlled to be in a conducting state to facilitate the passage of the cleaning liquid.

[0051] Based on the above implementation, in a specific implementation, as Figure 1 As shown, the first filter assembly includes a dynamic filter 13 and an iron remover 14 which are connected in sequence. The feed end of the dynamic filter 13 is connected to the fourth pipeline 10, and the discharge end of the iron remover 14 is connected to the cache tank 1 through the first pipeline 3.

[0052] In this embodiment, the first filtering component includes a dynamic filter 13 and an iron remover 14, which facilitates filtering of the slurry and improves the coating quality.

[0053] Based on the above implementation, in a specific implementation, as Figure 1 As shown, the bottoms of the dynamic filter 13 and the iron remover 14 are both provided with first discharge ball valves, which are suitable for discharging materials through the first discharge ball valves.

[0054] In this embodiment, by providing a first discharge ball valve, the slurry remaining in the dynamic filter 13 and the iron remover 14 can be discharged before cleaning, thereby improving the cleaning efficiency.

[0055] Based on the above implementation, in a specific implementation, as Figure 1 and Figure 2As shown, the self-cleaning feeding system also includes a fifth pipeline 15 and a sixth pipeline 16; a sixth reversing valve 17 and a seventh reversing valve 18 are sequentially provided on the second pipeline 6 along the feeding direction, and the sixth reversing valve 17 and the seventh reversing valve 18 are located between the delivery pump 5 and the first reversing valve 2; one end of the fifth pipeline 15 is connected to the sixth reversing valve 17, and the other end is connected to the discharge end of the second filter assembly; one end of the sixth pipeline 16 is connected to the seventh reversing valve 18, and the other end is connected to the buffer tank 1.

[0056] It should be noted that the sixth reversing valve 17 and the seventh reversing valve 18 are both conducted in one direction each time.

[0057] In this embodiment, when the slurry is transported, the sixth reversing valve 17 controls the delivery pump 5 to be connected to the second filter assembly, that is, Figure 1 The 0-1 connection of the sixth reversing valve 17 is turned on, and at the same time, the seventh reversing valve 18 controls the delivery pump 5 to be turned on the second filter assembly, that is, Figure 1 The 1-0 connection of the seventh reversing valve 18 in the filter is connected, so that the slurry flows through the second filter assembly and is discharged from the discharge end of the second filter assembly; when the second filter assembly needs to be reversely cleaned, the sixth reversing valve 17 controls the connection between the delivery pump 5 and the discharge end of the second filter assembly and the disconnection between the delivery pump 5 and the seventh reversing valve 18, that is, Figure 1 The 0-2 of the sixth reversing valve 17 is connected, and at the same time, the seventh reversing valve 18 controls the sixth reversing valve 17 and the second filter assembly to be disconnected, and the third reversing valve 8 and the sixth pipeline 16 are connected, that is, Figure 1 The 0-2 conductor of the seventh reversing valve 18 is connected, and the third reversing valve 8 is used to control the connection between the second filter component and the seventh reversing valve 18, and the connection between the second filter component and the third pipeline 9 is not connected, that is, the 1-0 conductor of the first reversing valve 2 in the figure is connected, and the fifth pipeline 15 is connected to the discharge end of the second filter component, and then the cleaning liquid is introduced into the cache tank 1 through the cleaning component, and then the cleaning liquid is passed through the sixth reversing valve 17, the fifth pipeline 15, the second filter component, the first reversing valve 2, the seventh reversing valve 18 and the sixth pipeline 16 in sequence through the delivery pump 5 and then flows back to the cache tank 1, so as to realize the reverse cleaning of the second filter component, and the filtered particulate matter in the second filter component can be reversely washed out without disassembly, thereby improving the cleaning effect, and at the same time, the cleaning liquid flows back to the cache tank 1 and repeatedly circulates to clean the second filter component, saving resources, and at the same time, the cleaning is circulated multiple times to improve the cleaning effect.

[0058] Based on the above implementation, in a specific implementation, as Figure 1 As shown, an eighth reversing valve 19 is provided on the fifth pipeline 15 , a ninth reversing valve 20 is provided on the sixth pipeline 16 , and the eighth reversing valve 19 is connected to the ninth reversing valve 20 through a seventh pipeline 27 .

[0059] It should be noted that the eighth reversing valve 19 and the ninth reversing valve 20 are both conducted in one direction each time.

[0060] In this embodiment, when the second filter assembly is reversely cleaned, the eighth reversing valve 19 connects the sixth reversing valve 17 and the feed end of the second filter assembly. Figure 1 The 1-0 of the eighth reversing valve 19 is connected, and the ninth reversing valve 20 makes the seventh reversing valve 18 and the buffer tank 1 connected, that is, Figure 1 After the reverse cleaning of the second filter assembly is completed, the seventh pipeline 27 and the feed end of the second filter assembly are connected through the eighth reversing valve 19, and the feed end of the second filter assembly is not connected to the sixth reversing valve 17, that is, Figure 1 The 0-2 of the eighth reversing valve 19 is connected, the ninth reversing valve 20 controls the seventh pipeline 27 and the buffer tank 1 to be connected, and the eighth reversing valve 19 and the seventh reversing valve 18 are not connected, that is, Figure 1 The 2-0 direction of the ninth reversing valve 20 is turned on, and the delivery pump 5 and the second filter assembly are turned on through the sixth reversing valve 17 and the seventh reversing valve 18, that is, Figure 1 The 0-1 of the sixth reversing valve 17, the 1-0 of the seventh reversing valve 18 and the 0-1 of the first reversing valve 2 are turned on, and then the cleaning liquid in the buffer tank 1 is delivered by the delivery pump 5 at high pressure to circulate and clean the second filter component along the feeding direction during coating, thereby further improving the cleaning effect.

[0061] Based on the above embodiment, in a specific embodiment, the discharge end of the second filter assembly is connected to the fifth pipeline 15 through the coating valve 7, and is suitable for connecting to the fifth pipeline 15 or an external coating device through the coating valve 7.

[0062] It should be noted that the coating valve 7 is conducted in one direction each time; the coating valve 7 is the eleventh reversing valve, which is convenient for controlling the second filter component to be connected to the external coating equipment for discharge coating during transportation, or controlling the second filter component to be connected to the fifth pipeline 15 during cleaning for easy cleaning.

[0063] In this embodiment, by setting a coating valve 7, the coating valve 7 is used to switch the feed end of the second filter component with the fifth pipeline 15 or the external coating device, so as to facilitate the conversion from the feeding process to the cleaning process. When the slurry is transported, the coating valve 7 is used to control the connection between the feed end of the second filter component and the external coating device and the disconnection between the feed end of the second filter component and the fifth pipeline 15, so as to avoid the slurry from flowing into the fifth pipeline 15, causing waste and polluting the fifth pipeline 15; when reverse cleaning is performed, or the second filter component is cleaned in a forward cycle by connecting the eighth reversing valve 19 and the ninth reversing valve 20, the coating valve 7 is used to control the feed end of the second filter component and the external coating device. The external coating equipment is not connected and the feed end of the second filter component is connected to the fifth pipeline 15, so as to avoid the cleaning liquid from flowing into the external coating equipment to pollute the slurry or flowing out to cause waste; at the same time, the external sewage discharge equipment can also be connected through the coating valve 7 to facilitate the cleaning of the second filter component along the feeding direction. At this time, the coating valve 7 is used to control the connection between the feed end of the second filter component and the external sewage discharge equipment and the disconnection between the feed end of the second filter component and the fifth pipeline 15, so as to avoid the slurry or cleaning liquid from flowing into the fifth pipeline 15 to cause waste and pollute the fifth pipeline 15, so as to discharge the residual slurry or the cleaning liquid during forward cleaning, realize multiple cleaning methods and improve the cleaning effect.

[0064] Based on the above implementation, in a specific implementation, as Figure 1 As shown, the second filter assembly includes a metal filter 21, a mass flow meter 22 and a capsule filter 23 which are connected in sequence; the discharge end of the capsule filter 23 is connected to the fifth pipeline 15, and the feed end of the metal filter 21 is connected to the second pipeline 6.

[0065] In this embodiment, the slurry is filtered by the metal filter 21 and the capsule filter 23 to improve the coating quality, and the mass of the fluid passing through the slurry is measured by the mass flow meter 22, so as to timely understand the slurry delivery situation and facilitate adjustment.

[0066] Based on the above implementation, in a specific implementation, as Figure 1 As shown, a second discharge ball valve is provided at the bottom of the metal filter 21, which is suitable for discharging materials through the second discharge ball valve.

[0067] In this embodiment, the slurry remaining in the metal filter 21 can be discharged through the second discharge ball valve before cleaning to improve the cleaning effect.

[0068] Based on the above implementation, in a specific implementation, as Figure 1 As shown, the fifth pipeline 15 and the mass flow meter 22 are both detachably connected to the capsule filter 23 .

[0069] In this embodiment, the filter element of the capsule filter 23 is disposable and does not need to be cleaned. It can be disassembled for cleaning and connected to the coating valve 7 and the mass flow meter 22 through the cleaning pipe 26 to prevent the capsule filter 23 from affecting the smoothness of the cleaning liquid delivery and improve the cleaning effect.

[0070] Specifically, the capsule filter 23 is detachably connected to the coating valve 7. After the capsule filter 23 is removed, the coating valve 7 and the mass flow meter 22 can be connected through the cleaning pipe 26 to prevent the capsule filter 23 from affecting the smoothness of the cleaning liquid delivery and improve the cleaning effect.

[0071] Based on the above implementation, in a specific implementation, as Figure 1 As shown, the feed end of the delivery pump 5 is connected to the bottom of the buffer tank 1 through the seventh pipeline 27; the seventh pipeline 27 is provided with a tenth reversing valve 24, which is suitable for connecting the delivery pump 5 and the buffer tank 1 or connecting the buffer tank 1 and an external discharge device.

[0072] It should be noted that the tenth reversing valve 24 is conducted in one direction each time.

[0073] In this embodiment, a tenth reversing valve 24 can be provided. When cleaning or slurry conveying is performed, the tenth reversing valve 24 controls the buffer tank 1 and the conveying pump 5 to remain connected. When cleaning is completed or slurry conveying is completed, the tenth reversing valve 24 can be used to control the buffer tank 1 to be connected to the outside, so that the cleaning liquid or slurry can be discharged through the tenth reversing valve 24.

[0074] Based on the above implementation, in a specific implementation, as Figure 1 As shown, the cleaning assembly includes a plurality of cleaning nozzles 25, and the plurality of cleaning nozzles 25 are arranged in the buffer tank 1, and the feed ends of the cleaning nozzles 25 are suitable for being connected to an external liquid supply device.

[0075] In this embodiment, a plurality of cleaning nozzles 25 are provided. When cleaning is required, cleaning liquid is introduced through the cleaning nozzles 25. While providing the cleaning liquid, the inner wall of the buffer tank 1 can be sprayed through the cleaning nozzles 25, thereby improving the cleaning effect.

[0076] Specifically, the cleaning liquid is a slurry solvent, which improves the cleaning effect.

[0077] The specific working principle of the self-cleaning feeding system provided in this embodiment is: by controlling the on-off and conduction direction of the first reversing valve 2, the second reversing valve 4, the third reversing valve 8, the fourth reversing valve 11, the fifth reversing valve 12, the sixth reversing valve 17, the seventh reversing valve 18, the eighth reversing valve 19, the ninth reversing valve 20, the tenth reversing valve 24 and the coating valve 7, different flow paths are realized to achieve the purpose of cleaning and conveying the slurry, and the slurry conveying and cleaning method is as follows; when conveying the slurry, the flow path of the slurry is: entering from the third reversing valve 8 and passing through the first filter component, the first pipeline 3, the fourth reversing valve 11, the second reversing valve 19, the tenth reversing valve 24 and the coating valve 7 in sequence. Valve 4, cache tank 1, the tenth reversing valve 24, the delivery pump 5, the sixth reversing valve 17, the seventh reversing valve 18, the first reversing valve 2 and the second filter assembly and then flow out from the coating valve 7 for feed coating; when cleaning is required, the slurry remaining in the dynamic filter 13 and the iron remover 14 can be discharged through the first discharge ball valve, the slurry remaining in the metal filter 21 can be discharged through the second discharge ball valve, and the slurry remaining in the cache tank 1 can be discharged through the third discharge ball valve, and the capsule filter 23 can be disassembled and replaced through the cleaning pipe 26; the cleaning liquid can be connected to the third reversing valve 8, and the cleaning liquid can be delivered at high pressure by the delivery pump 5 along the delivery pipe of the slurry. The delivery path is cleaned, and the cleaning can be completed automatically, which reduces the difficulty of cleaning. There is no need to disassemble for cleaning, and the cleaning path is the same as the flow path of the slurry; secondly, a predetermined amount of cleaning liquid can be introduced into the buffer tank 1 through the cleaning nozzle 25, and the volume of the cleaning liquid preferably reaches 1 / 3 of the volume of the buffer tank 1 to clean the inner wall of the buffer tank 1, and at the same time, the flow path of the cleaning liquid in the buffer tank 1 is controlled as follows: it flows out from the buffer tank 1 and passes through the tenth reversing valve 24, the delivery pump 5, the sixth reversing valve 17, the seventh reversing valve 18, the first reversing valve 2, the third pipeline 9, the fifth reversing valve 12, the fourth reversing valve 11, the first filter assembly, the third reversing valve 8 and the After the second reversing valve 4, it flows back to the cache tank 1, and the high-pressure power is provided by the delivery pump 5 to realize reverse circulation cleaning of the first filter component to improve the cleaning effect. Then, the flow path of the cleaning liquid in the cache tank 1 is controlled as follows: it flows out from the cache tank 1 and passes through the tenth reversing valve 24, the delivery pump 5, the sixth reversing valve 17, the seventh reversing valve 18, the first reversing valve 2, the third pipeline 9, the fifth reversing valve 12 and the second reversing valve 4 in sequence, and then flows back to the cache tank 1. The delivery pump 5 provides high-pressure power to realize cyclic cleaning of the pipeline between the fifth reversing valve 12 and the second reversing valve 4 to improve the cleaning effect. After the cleaning is completed, the cleaning liquid is discharged through the tenth reversing valve 24;In addition, a predetermined amount of cleaning liquid can be introduced into the buffer tank 1 through the cleaning nozzle 25. Preferably, the volume of the cleaning liquid reaches 1 / 3 of the volume of the buffer tank 1 to clean the inner wall of the buffer tank 1. At the same time, the flow path of the cleaning liquid in the buffer tank 1 is controlled as follows: it flows out from the buffer tank 1 and passes through the tenth reversing valve 24, the delivery pump 5, the sixth reversing valve 17, the fifth pipeline 15, the eighth reversing valve 19, the coating valve 7, the second filter assembly, the first reversing valve 2, the seventh reversing valve 18, the sixth pipeline 16 and the ninth reversing valve 20 in sequence, and then flows back to the buffer tank 1. The delivery pump 5 provides high-pressure power to realize the second filter The components are reverse-circulated for cleaning to improve the cleaning effect, and then the flow path of the cleaning liquid in the buffer tank 1 is controlled as follows: it flows out of the buffer tank 1 and passes through the tenth reversing valve 24, the delivery pump 5, the sixth reversing valve 17, the seventh reversing valve 18, the first reversing valve 2, the second filter component, the coating valve 7, the fifth pipeline 15, the eighth reversing valve 19, the seventh pipeline 27 and the ninth reversing valve 20 in sequence, and then flows back to the buffer tank 1. The delivery pump 5 provides high-pressure power to realize the circulation cleaning of the second filter component along the feeding direction of the slurry to improve the cleaning effect. After the cleaning is completed, the cleaning liquid is discharged through the tenth reversing valve 24. The self-cleaning feeding system provided in this embodiment introduces cleaning liquid into the cleaning component, and then cooperates with the delivery pump 5 to deliver the cleaning liquid in a high-pressure state to complete automatic cleaning, reduce the difficulty of cleaning, and improve the cleaning efficiency. At the same time, it can realize independent reverse circulation cleaning of the first filter component and the second filter component, and wash out the particles in the dynamic filter 13, the iron remover 14 and the metal filter 21 from the inlet, and complete the cleaning of the filter without disassembly. At the same time, the pipeline between the first filter component and the second filter component is cleaned without disassembly, thereby improving the cleaning effect. It solves the technical problems that in the existing feeding system, when cleaning the pipeline, the pipeline needs to be dismantled and cleaned one by one, the cleaning efficiency is low, and it is very easy to leak during the disassembly process, and the cleaning is difficult. ;

[0078] In one embodiment, in a specific application, a controller may be provided, and the first reversing valve 2, the second reversing valve 4, the third reversing valve 8, the fourth reversing valve 11, the fifth reversing valve 12, the sixth reversing valve 17, the seventh reversing valve 18, the eighth reversing valve 19, the ninth reversing valve 20, the tenth reversing valve 24, the coating valve 7, the delivery pump 5 and the external liquid supply device are all communicatively connected with the controller, and automatic control may be achieved through program setting or external device manipulation to complete fully automatic cleaning and slurry delivery, thereby further improving the degree of intelligence.

[0079] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A self-cleaning feeding system, comprising a first filter assembly, a buffer tank (1), a delivery pump (5) and a second filter assembly which are sequentially connected along a feeding direction, wherein the first filter assembly and the buffer tank (1) are connected via a first pipeline (3), and the delivery pump (5) and the second filter assembly are connected via a second pipeline (6), characterized in that: Also includes: A cleaning component, connected to the cache tank (1) and suitable for introducing cleaning liquid into the cache tank (1); A first reversing valve (2) is arranged on the second pipeline (6); a third pipeline (9), one end of which is in communication with the first reversing valve (2) and the other end of which is in communication with the first pipeline (3); wherein the first reversing valve (2) is adapted to connect the delivery pump (5) and the second filter assembly or to connect the delivery pump (5) and the third pipeline (9); A fourth pipeline (10) has one end connected to the feed end of the first filter assembly and the other end connected to the first pipeline (3); wherein the connection point between the fourth pipeline (10) and the first pipeline (3) is located between the third pipeline (9) and the cache tank (1).

2. The self-cleaning feeding system according to claim 1, characterized in that: A second reversing valve (4) is provided on the first pipeline (3), the second reversing valve (4) is located between the third pipeline (9) and the cache tank (1), and the fourth pipeline (10) is connected to the first pipeline (3) through the second reversing valve (4); wherein the second reversing valve (4) is suitable for connecting the first filter assembly and the cache tank (1) or connecting the fourth pipeline (10) and the cache tank (1); And / or, the feed end of the first filter assembly is connected to the fourth pipeline (10) through the third reversing valve (8), and is suitable for connecting to the fourth pipeline (10) or an external feed port through the third reversing valve (8).

3. The self-cleaning feeding system according to claim 1, characterized in that: The first pipeline (3) is also provided with a fourth reversing valve (11), and the fourth reversing valve (11) is located between the third pipeline (9) and the first filter assembly; And / or, a fifth reversing valve (12) is provided at one end of the third pipeline (9) connected to the first pipeline (3), which is suitable for controlling the connection or disconnection between the third pipeline (9) and the first pipeline (3) through the fifth reversing valve (12).

4. The self-cleaning feeding system according to claim 1, characterized in that: The first filter assembly comprises a dynamic filter (13) and an iron remover (14) which are connected in sequence, wherein the feed end of the dynamic filter (13) is connected to the fourth pipeline (10), and the discharge end of the iron remover (14) is connected to the buffer tank (1) via the first pipeline (3).

5. The self-cleaning feeding system according to claim 4, characterized in that: The bottoms of the dynamic filter (13) and the iron remover (14) are both provided with a first discharge ball valve, which is suitable for discharging materials through the first discharge ball valve.

6. The self-cleaning feeding system according to any one of claims 1 to 5, characterized in that: It also includes a fifth pipeline (15) and a sixth pipeline (16); a sixth reversing valve (17) and a seventh reversing valve (18) are provided on the second pipeline (6) in sequence along the feed direction, and the sixth reversing valve (17) and the seventh reversing valve (18) are located between the delivery pump (5) and the first reversing valve (2); one end of the fifth pipeline (15) is connected to the sixth reversing valve (17), and the other end is connected to the discharge end of the second filter assembly; one end of the sixth pipeline (16) is connected to the seventh reversing valve (18), and the other end is connected to the buffer tank (1).

7. The self-cleaning feeding system according to claim 6, characterized in that: An eighth reversing valve (19) is provided on the fifth pipeline (15), a ninth reversing valve (20) is provided on the sixth pipeline (16), and the eighth reversing valve (19) is connected to the ninth reversing valve (20) via a seventh pipeline (27); And / or, the discharge end of the second filter assembly is connected to the fifth pipeline (15) through the coating valve (7), and is suitable for being connected to the fifth pipeline (15) or an external coating device through the coating valve (7).

8. The self-cleaning feeding system according to claim 6, characterized in that: The second filter assembly comprises a metal filter (21), a mass flow meter (22) and a capsule filter (23) which are connected in sequence; the discharge end of the capsule filter (23) is connected to the fifth pipeline (15), and the feed end of the metal filter (21) is connected to the second pipeline (6).

9. The self-cleaning feeding system according to claim 8, characterized in that: A second discharge ball valve is provided at the bottom of the metal filter (21), and is suitable for discharging materials through the second discharge ball valve; And / or, the fifth pipeline (15) and the mass flow meter (22) are both detachably connected to the capsule filter (23).

10. The self-cleaning feeding system according to claim 1, characterized in that: The feed end of the delivery pump (5) is connected to the bottom of the buffer tank (1) through a seventh pipeline (27); a tenth reversing valve (24) is provided on the seventh pipeline (27), and the tenth reversing valve (24) is suitable for connecting the delivery pump (5) and the buffer tank (1) or connecting the buffer tank (1) and an external discharge device; And / or, the cleaning component comprises a plurality of cleaning nozzles (25), the plurality of cleaning nozzles (25) are arranged in the buffer tank (1), and the feed ends of the cleaning nozzles (25) are suitable for being connected to an external liquid supply device.

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