Filtrate recovery system

Abstract

The utility model relates to the technical field of humic acid production filtrate recovery, in particular to a filtrate recovery system. The filtrate recovery system comprises a reaction kettle, the reaction kettle is connected with a solid-liquid separator through a conveying filter belt, the solid-liquid separator is connected with a filtrate recovery tank through a ceramic filter, a U-shaped liquid collector is arranged below the conveying filter belt, a primary filtrate temporary storage tank is connected below the conveying filter belt, and a ceramic filter plate is arranged in the ceramic filter. According to the system, through cooperative use of the conveying filter belt and the U-shaped liquid collector, the problem that filtering is not timely after continuous discharging is avoided, and the preliminary filtering efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filtrate recovery in humic acid production, in particular to a filtrate recovery system. Background Art

[0002] As an important biomass resource, humic acid has a wide range of applications in agriculture, environmental protection, medicine, etc. In the production process of humic acid, the recycling of filtrate is a key link to improve resource utilization and reduce production costs.

[0003] In the workshop production, the humic acid after the reaction is completed is filtered through the filter screen in the way of "up in and down out", and the filtrate is filtered out from the bottom of the filter screen. However, during use, there are problems such as the filter screen is short and the filtration is not timely after continuous feeding; and in the subsequent filtration process, the filter plate is difficult to clean after being blocked, which seriously affects the production progress. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the purpose of the utility model is to provide a filtrate recovery system, which avoids the problem of untimely filtration after continuous feeding through the coordinated use of a conveying filter belt and a U-shaped liquid collector, and greatly improves the efficiency of preliminary filtration; through the setting of a ceramic filter, impurities are filtered in a "bottom-in and top-out" manner, which greatly improves the filtration efficiency; through the setting of a scraper and a backwash pipe, the processing efficiency after the filter plate is blocked is greatly improved, avoiding the impact on the production progress.

[0005] The utility model is realized by adopting the following technical solutions:

[0006] The filtrate recovery system comprises a reactor, which is connected to a solid-liquid separator through a conveyor filter belt, and the solid-liquid separator is connected to a filtrate recovery tank through a ceramic filter. A U-shaped liquid collector is provided below the conveyor filter belt, and a primary filtrate temporary storage tank is connected below the U-shaped liquid collector. A ceramic filter plate is provided inside the ceramic filter.

[0007] The conveyor filter belt is provided with filter holes. During the discharge process of the reactor, the conveyor belt driving wheel drives the conveyor filter belt to rotate to filter the product. The filtered solid phase enters the solid-liquid separator, and the liquid phase enters the U-shaped liquid collector for collection.

[0008] The reactor is connected with a premixing tank, a filter device is arranged on the connecting pipeline between the premixing tank and the reactor, and a temporary storage tank for filtrate of the premixing tank is connected below the filter device.

[0009] The conveyor filter belt is provided with a conveyor drive wheel, a blunt-angle discharger is provided below the reactor, the U-shaped liquid collector is inclined below, a guide plate is provided between the conveyor filter belt and the solid-liquid separator, and the lowest end of the bottom plate of the U-shaped liquid collector is connected to the primary filtrate temporary storage tank.

[0010] A liquid outlet pump is provided between the solid-liquid separator and the ceramic filter, a solid-liquid separation liquid outlet pipeline is provided between the solid-liquid separator and the liquid outlet pump, and the primary filtrate temporary storage tank is connected to the solid-liquid separation liquid outlet pipeline through a pipeline.

[0011] The connection point between the liquid outlet pump and the ceramic filter through a pipeline is located below the ceramic filter plate, and the connection point between the filtrate recovery tank and the ceramic filter through a pipeline is located above the ceramic filter plate.

[0012] A scraper is provided below the ceramic filter plate, and a pull rod is connected to the scraper.

[0013] When the filtration efficiency of the ceramic filter plate decreases, open the backwash pipe valve to backwash the ceramic filter plate, and at the same time drive the scraper through the pull rod to scrape off the impurities flushed out.

[0014] The filtrate recovery tank is connected to the top of the ceramic filter through a discharge pump, a backwashing pipeline is connected between the discharge pump and the ceramic filter, and a discharge pipeline is connected to the backwashing pipeline.

[0015] The working principle of the utility model is:

[0016] After the raw materials in the premix tank are filtered through the pipeline, the solid phase enters the reactor for reaction. After the reaction is completed, it enters the conveyor filter belt through the obtuse angle discharger. The conveyor filter belt is provided with filter holes. During the discharge process of the reactor, the conveyor belt driving wheel drives the conveyor filter belt to rotate to filter the product. The filtered solid phase enters the solid-liquid separator, and the liquid phase enters the U-shaped liquid collector for collection, and then enters the primary filtrate temporary storage tank; the product entering the solid-liquid separator is centrifuged, and the separated liquid phase enters the ceramic filter through the liquid discharge pump for filtration, and the filtrate in the primary filtrate temporary storage tank enters the ceramic filter for filtration. The liquid phase after filtration enters the filtrate recovery tank for storage; when the filtration efficiency of the ceramic filter plate decreases, the backwash pipeline valve is opened to backwash the ceramic filter plate, and the scraper is driven by the pull rod to scrape off the impurities flushed out. Among them, the lowest end of the bottom plate of the U-shaped liquid collector is connected to the primary filtrate temporary storage tank.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The filtrate recovery system of the utility model is adopted, through the coordinated use of the conveying filter belt and the U-shaped liquid collector, to avoid the problem of untimely filtration after continuous feeding, and greatly improve the efficiency of the initial filtration; through the setting of the ceramic filter, impurities are filtered in a "bottom-in and top-out" manner, which greatly improves the filtration efficiency; through the setting of the scraper and the backwashing pipe, the processing efficiency after the filter plate is blocked is greatly improved, and the impact on the production progress is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the filtrate recovery system of the utility model;

[0020] In the figure: 1. premixing tank; 2. reactor; 3. conveyor belt drive wheel; 4. solid-liquid separator; 5. ceramic filter; 6. filtrate recovery tank; 7. premixing tank filtrate temporary storage tank; 8. obtuse angle discharger; 9. conveyor filter belt; 10. U-shaped liquid collector; 11. primary filtrate temporary storage tank; 12. guide plate; 13. solid-liquid separation liquid outlet pipeline; 14. liquid outlet pump; 15. ceramic filter plate; 16. scraper; 17. pull rod; 18. discharge pump; 19. discharge pipeline; 20. backwash pipeline. DETAILED DESCRIPTION

[0021] In order to make the purpose and technical solution of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings.

[0022] Example 1

[0023] like Figure 1 As shown, the filtrate recovery system includes a reactor 2, which is connected to a solid-liquid separator 4 through a conveyor filter belt 9, and the solid-liquid separator 4 is connected to a filtrate recovery tank 6 through a ceramic filter 5. A U-shaped liquid collector 10 is provided below the conveyor filter belt 9, and a primary filtrate temporary storage tank 11 is connected below the U-shaped liquid collector 10, and a ceramic filter plate 15 is provided inside the ceramic filter 5. A premixing tank 1 is connected to the reactor 2, and a filtering device is provided on the connecting pipe between the premixing tank 1 and the reactor 2, and a premixing tank filtrate temporary storage tank 7 is connected below the filtering device. A conveyor belt driving wheel 3 is provided on the conveyor filter belt 9, and an obtuse angle discharger 8 is provided below the reactor 2. The U-shaped liquid collector 10 is inclined below, and a guide plate 12 is provided between the conveyor filter belt 9 and the solid-liquid separator 4. The lowest end of the bottom plate of the U-shaped liquid collector 10 is connected to the primary filtrate temporary storage tank 11 through a pipeline. A liquid discharge pump 14 is provided between the solid-liquid separator 4 and the ceramic filter 5, a solid-liquid separation liquid discharge pipeline 13 is provided between the solid-liquid separator 4 and the liquid discharge pump 14, and the primary filtrate temporary storage tank 11 is connected to the solid-liquid separation liquid discharge pipeline 13 through a pipeline. The connection between the liquid discharge pump 14 and the ceramic filter 5 through a pipeline is located below the ceramic filter plate 15, and the connection between the filtrate recovery tank 6 and the ceramic filter 5 through a pipeline is located above the ceramic filter plate 15. A scraper 16 is provided below the ceramic filter plate 15, and a pull rod 17 is connected to the scraper 16. The filtrate recovery tank 6 is connected to the top of the ceramic filter 5 through a discharge pump 18, and a backwash pipeline 20 is connected between the discharge pump 18 and the ceramic filter 5, and a discharge pipeline 19 is connected to the backwash pipeline 20.

[0024] The above filtrate recovery system, when in operation, comprises the following steps:

[0025] (1) After the raw materials in the premixing tank 1 are filtered through the pipeline, the solid phase enters the reactor 2 for reaction. After the reaction is completed, the raw materials enter the conveyor filter belt 9 through the obtuse angle discharger 8. The conveyor filter belt 9 is provided with filter holes. During the discharge process of the reactor, the conveyor belt driving wheel 3 drives the conveyor filter belt 9 to rotate to filter the product. The filtered solid phase enters the solid-liquid separator 4, and the liquid phase enters the U-shaped liquid collector 10 for collection, and then enters the primary filtrate temporary storage tank 11; (2) The product entering the solid-liquid separator 4 is centrifuged, and the separated liquid phase enters the ceramic filter 5 through the liquid discharge pump 14 for filtration. The filtrate in the primary filtrate temporary storage tank 11 enters the ceramic filter 5 for filtration. After the filtration is completed, the liquid phase enters the filtrate recovery 6 for storage; (3) When the filtration efficiency of the ceramic filter plate 15 decreases, the valve of the backwashing pipeline 20 is opened to backwash the ceramic filter plate 15, and at the same time, the scraper 16 is driven by the pull rod 17 to scrape off the impurities flushed out.

[0026] The utility model relates to the technical field of filtrate recovery in humic acid production, specifically a filtrate recovery system. The filtrate recovery system comprises a reactor, the reactor is connected to a solid-liquid separator through a conveyor filter belt, the solid-liquid separator is connected to a filtrate recovery tank through a ceramic filter, a U-shaped liquid collector is provided below the conveyor filter belt, a primary filtrate temporary storage tank is connected below the U-shaped liquid collector, and a ceramic filter plate is provided inside the ceramic filter. This system avoids the problem of untimely filtration after continuous material feeding through the coordinated use of the conveyor filter belt and the U-shaped liquid collector, and greatly improves the efficiency of preliminary filtration.

Claims

1. A filtrate recovery system, characterized in that: The invention comprises a reaction kettle (2), wherein the reaction kettle (2) is connected to a solid-liquid separator (4) via a conveyor filter belt (9), the solid-liquid separator (4) is connected to a filtrate recovery tank (6) via a ceramic filter (5), a U-shaped liquid collector (10) is provided below the conveyor filter belt (9), a primary filtrate temporary storage tank (11) is connected below the U-shaped liquid collector (10), and a ceramic filter plate (15) is provided inside the ceramic filter (5); A scraper (16) is provided below the ceramic filter plate (15), and a pull rod (17) is connected to the scraper (16); The filtrate recovery tank (6) is connected to the top of the ceramic filter (5) via a discharge pump (18), a backwashing pipe (20) is connected between the discharge pump (18) and the ceramic filter (5), and a discharge pipe (19) is connected to the backwashing pipe (20).

2. The filtrate recovery system according to claim 1, characterized in that: The reactor (2) is connected to a premixing tank (1), a filter device is provided on the connecting pipe between the premixing tank (1) and the reactor (2), and a temporary storage tank (7) for filtrate of the premixing tank is connected below the filter device.

3. The filtrate recovery system according to claim 1, characterized in that: The conveyor filter belt (9) is provided with a conveyor drive wheel (3), a blunt-angle discharger (8) is provided below the reaction kettle (2), the U-shaped liquid collector (10) is arranged obliquely below, and a guide plate (12) is provided between the conveyor filter belt (9) and the solid-liquid separator (4).

4. The filtrate recovery system according to claim 1, characterized in that: A liquid outlet pump (14) is provided between the solid-liquid separator (4) and the ceramic filter (5), a solid-liquid separation liquid outlet pipeline (13) is provided between the solid-liquid separator (4) and the liquid outlet pump (14), and the primary filtrate temporary storage tank (11) is connected to the solid-liquid separation liquid outlet pipeline (13) through a pipeline.

5. The filtrate recovery system according to claim 4, characterized in that: The connection point between the liquid outlet pump (14) and the ceramic filter (5) through a pipeline is located below the ceramic filter plate (15), and the connection point between the filtrate recovery tank (6) and the ceramic filter (5) through a pipeline is located above the ceramic filter plate (15).

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