Device for pretreating corn soaking water

Abstract

The utility model discloses a device for pretreating corn soaking water. The device comprises a pre-coating liquid mixing tank, a raw material storage tank, a pre-coating film filter, a waste liquid storage tank and a collecting tank which are communicated with one another, the pre-coating film filter comprises a shell and a filter cartridge rotationally arranged in the shell, filter cloth is arranged on the surface of the filter cartridge, and an inner cavity of the filter cartridge is communicated with a waste liquid storage tank and a collecting tank respectively; a plurality of filter holes are formed in the surface of the filter cartridge, and a scraper is further arranged on the inner wall of the shell; the shell is provided with a waste outlet, and a waste storage tank is arranged below the waste outlet. The device not only has a good filtering effect, but also can effectively improve the pretreatment efficiency of the corn soaking water, and solves the problems of reduction of membrane flux and serious pollution and blockage in the pretreatment process.

Description

Technical Field

[0001] The utility model relates to the technical field of corn soaking water treatment, in particular to a device for pre-treating corn soaking water. Background Art

[0002] Corn steepwater is an organic wastewater generated after corn kernel processing and utilization, primarily from the wet milling process for extracting corn starch. Rich in protein, amino acids, inorganic salts, phytic acid, and other components, its recycling holds significant economic value. However, due to the presence of insoluble starch, protein, and corn fiber in corn steepwater, the turbidity of the soaking liquid is very low, limiting its direct use to extract active ingredients and hindering its application.

[0003] Currently, the main methods for pretreating corn steep water are: static sedimentation, flocculation sedimentation, membrane filtration, and filter cloth filtration. Static sedimentation and flocculation sedimentation methods have low sedimentation efficiency and incomplete solid-liquid separation. Membrane filtration and filter cloth filtration methods are susceptible to fouling and clogging, which significantly reduces membrane flux, affecting pretreatment efficiency and increasing corn steep water pretreatment costs. Therefore, improving corn steep water pretreatment efficiency and reducing fouling and clogging during pretreatment are challenges facing those skilled in the art. Utility Model Content

[0004] The technical problem to be solved by the utility model is: in view of the shortcomings of the existing technology, a device for pretreatment of corn soaking water is provided, which not only has a good filtering effect, but also can effectively improve the pretreatment efficiency of corn soaking water, and improve the problems of decreased membrane flux and serious fouling during the pretreatment process.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] A device for pre-treating corn soaking water, comprising a pre-coating liquid batching tank, a raw material storage tank, a pre-coating membrane filter, a waste liquid storage tank, and a collection tank;

[0007] The pre-coating membrane filter includes a shell and a filter cartridge rotatably arranged in the shell, the surface of the filter cartridge is provided with a filter cloth, and the inner cavity of the filter cartridge is connected to the waste liquid storage tank and the collection tank respectively; the surface of the filter cartridge is provided with a plurality of filter holes, and a scraper is also provided on the inner wall of the shell, and the distance between one end of the scraper and the filter cloth on the surface of the filter cartridge is 3mm-40mm; a waste outlet is provided on the shell, and a waste storage tank is provided below the waste outlet.

[0008] Preferably, the pre-coating liquid batching tank is also connected to the solvent storage tank and the pre-coating agent storage tank.

[0009] Preferably, the pre-coating liquid batching tank and the pre-coating agent storage tank are both provided with a stirrer.

[0010] Preferably, the filter cartridge is rotatably disposed in the housing via a rotating shaft, and the rotating shaft is connected to an output shaft of the motor.

[0011] Preferably, the diameters of the plurality of filter holes are the same.

[0012] Preferably, a first electric valve is provided on the connecting pipe between the pre-coating liquid batching tank and the pre-coating membrane filter, a liquid level sensor is provided in the pre-coating liquid batching tank, and the liquid level sensor is interlocked with the first electric valve.

[0013] Preferably, a material spraying plate is provided in the cavity formed by the shell and the filter cartridge, and the material spraying plate is connected to the feed pipe in the pre-coating membrane filter.

[0014] Preferably, a second electric valve is provided at the waste outlet, and a pressure sensor is provided on the inner wall of the shell at the waste outlet, and the pressure sensor is interlocked with the second electric valve.

[0015] Preferably, the waste liquid storage tank is connected to the pre-coating liquid preparation tank.

[0016] Preferably, the waste liquid storage tank is connected to a first vacuum pump, and the collection tank is connected to a second vacuum pump.

[0017] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0018] The utility model provides a device for pretreating corn soaking water, comprising a connected precoating liquid feed tank, a precoating agent storage tank, a solvent storage tank, a precoating membrane filter, a waste liquid storage tank, and a collection tank; the precoating membrane filter comprises a filter cartridge rotatably arranged in the shell, a filter cloth is provided on the surface of the filter cartridge, and an inner cavity of the filter cartridge is respectively connected to the waste liquid storage tank and the feed liquid storage tank; a plurality of filter holes are provided on the surface of the filter cartridge, a scraper is also provided on the inner wall of the shell, a waste outlet is provided on the shell, and a waste storage tank is provided below the waste outlet. First, under the action of the first vacuum pump, the device allows the pre-coating liquid in the pre-coating liquid batching tank to enter the pre-coating membrane filter for pre-coating. After a certain period of pre-coating, the pre-coating agent in the pre-coating liquid forms a pre-coating film layer on the surface of the filter cloth. The scraper is in contact with the surface of the pre-coating film layer. The filtrate during the pre-coating process is collected in the waste liquid storage tank. When the pre-coating membrane filter filters the corn soaked water after pre-coating, the insoluble impurities intercepted on the surface of the pre-coating film layer in the corn soaked water are scraped off under the combined action of the filter drum rotation and the scraper during the filtration process, which effectively prevents and improves the serious problem of fouling and clogging in the pretreatment process.

[0019] In this device, a first electric valve is installed on the pipe connecting the precoat liquid dispensing tank and the precoat membrane filter. A liquid level sensor is installed within the precoat liquid dispensing tank, and the liquid level sensor is interlocked with the first electric valve. The liquid level sensor effectively monitors the amount of liquid entering the precoat membrane filter and, based on the concentration of the precoat liquid, effectively controls the thickness of the precoat film layer.

[0020] In this device, a spray plate is located within the cavity formed by the housing and filter cartridge. This plate is connected to the feed pipe in the pre-coating membrane filter. The spray plate evenly sprays the liquid onto the surface of the filter cartridge, thereby ensuring smooth filtration and pre-coating processes.

[0021] In this device, a second electric valve is installed at the waste outlet. A pressure sensor is also located on the inner wall of the housing at this location, interlocked with the second electric valve. During the filtration process, insoluble impurities trapped in the pre-coating layer are scraped off and fall into the waste outlet. The pressure sensor monitors the accumulation of insoluble impurities in real time. If a certain amount of impurities accumulates, a signal is transmitted to the external control system, which automatically opens the second electric valve and promptly removes the waste.

[0022] In this device, the waste liquid storage tank is connected to the pre-coating liquid preparation tank. The waste liquid collected during the pre-coating process can be reused as a solvent in the preparation of the pre-coating liquid, realizing the reuse of the waste liquid and saving energy and protecting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic structural diagram of Example 1 of the present utility model;

[0025] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0026] In the figure, 1. pre-coating liquid batching tank; 2. raw material storage tank; 3. pre-coating membrane filter; 301. shell; 302. filter cartridge; 303. filter cloth; 4. waste liquid storage tank; 5. collection tank; 6. solvent storage tank; 7. pre-coating agent storage tank; 8. filter hole; 9. scraper; 10. waste outlet; 11. waste storage tank; 12. agitator; 13. motor; 14. first electric valve; 15. liquid level sensor; 16. spray plate; 17. second electric valve; 18. pressure sensor; 19. first vacuum pump; 20. second vacuum pump. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] Example 1

[0029] like Figure 1 and Figure 2 As shown, a device for pre-treating corn soaking water includes a pre-coating liquid batching tank 1, a raw material storage tank 2, a pre-coating membrane filter 3, a waste liquid storage tank 4, and a collection tank 5. The pre-coating liquid batching tank 1 is also connected to a solvent storage tank 6 and a pre-coating agent storage tank 7.

[0030] The pre-coating membrane filter 3 includes a shell 301 and a filter cartridge 302 rotatably arranged in the shell 301. The surface of the filter cartridge 302 is provided with a filter cloth 303, and the inner cavity of the filter cartridge 302 is connected to the waste liquid storage tank 4 and the collection tank 5 respectively; the surface of the filter cartridge 302 is provided with a plurality of filter holes 8, and a scraper 9 is also provided on the inner wall of the shell 301, and the distance between one end of the scraper 9 and the filter cloth 303 on the surface of the filter cartridge 302 is 3mm-40mm; a waste outlet 10 is provided on the shell 301, and a waste storage tank 11 is provided below the waste outlet 10.

[0031] Furthermore, in this embodiment, a stirrer 12 is provided in the pre-coating liquid preparation tank 1 and the pre-coating agent storage tank 7, which effectively improves the uniformity of the pre-coating liquid and the raw materials and facilitates the smooth progress of the pre-coating and filtration processes.

[0032] Furthermore, in this embodiment, the filter cartridge 302 is rotatably disposed in the housing 301 via a rotating shaft (not shown in the figure), and the rotating shaft is connected to the output shaft of the motor 13 .

[0033] Furthermore, in this embodiment, the diameters of the plurality of filter holes 8 are the same, which can effectively ensure the uniformity of the pre-coating and facilitate the subsequent filtration of the corn steep liquor.

[0034] Furthermore, in this embodiment, a first electric valve 14 is provided on the connecting pipe between the precoating liquid dispensing tank 1 and the precoating membrane filter 3. A liquid level sensor 15 is provided in the precoating liquid dispensing tank 1, and the liquid level sensor 15 is interlocked with the first electric valve 14. The present device uses the liquid level sensor 15 to monitor the amount of precoating liquid entering the precoating membrane filter 3 in real time, and then combines it with the precoating liquid concentration and precoating time to better control the thickness of the precoating film layer.

[0035] Furthermore, in this embodiment, a spraying disc 16 is provided in the cavity formed by the housing 301 and the filter cartridge 302, and the spraying disc 16 is connected to the feed pipe in the pre-coating membrane filter 3. The spraying disc 16 allows the pre-coating liquid or corn soaking liquid to be evenly sprayed on the surface of the filter cartridge 302, thereby ensuring the smooth progress of the pre-coating and filtration processes.

[0036] Furthermore, in this embodiment, a second electric valve 17 is provided at the waste outlet 10, and a pressure sensor 18 is provided on the inner wall of the housing 301 at the waste outlet 10. The pressure sensor 18 is interlocked with the second electric valve 17. The pressure sensor 18 monitors the amount of waste accumulated at the waste outlet 10 in real time. When a certain amount of waste accumulates, the pressure sensor 18 transmits a signal to an external control system (not shown), which opens the second electric valve 17, transferring the waste to the waste storage tank 11. This waste contains nutrients required by plants and can be used as a soil conditioner after drying.

[0037] Furthermore, in this embodiment, the waste liquid storage tank 4 is connected to the pre-coating liquid preparation tank 1, and the filtrate in the pre-coating process enters the waste liquid storage tank 4 and can be reused as a solvent in the preparation of the pre-coating liquid.

[0038] Furthermore, in this embodiment, the waste liquid storage tank 4 is connected to a first vacuum pump 19 , and the collection tank 5 is connected to a second vacuum pump 20 .

[0039] The working principle of this device is as follows:

[0040] First, add a certain amount of solvent and precoating agent into the precoating liquid batching tank 1 through the solvent storage tank 6 and the precoating agent storage tank 7, and turn on the agitator 12 to prepare a precoating liquid of a certain concentration. During precoating, turn on the first vacuum pump 19, start the motor 13, and pump the precoating liquid into the precoating membrane filter 3. The motor 13 drives the filter cartridge 302 to rotate. Under the action of the first vacuum pump 19, the precoating liquid passes through the filter cloth 303, and the precoating agent in the precoating liquid is intercepted by the filter cloth 303, so that it is evenly smeared on the surface of the filter cloth 303 to form a precoating film layer. The thickness of the precoating film layer is controlled by the precoating time and the amount of precoating liquid used, so that the thickness of the precoating film layer is the same as the distance between the scraper 9 and the filter cloth 303. When filtering the corn soaking liquid, turn on the second vacuum pump 20, turn on the motor 13, and pump the precoating liquid from the raw material storage tank 2. The raw material is pumped into the pre-coated membrane filter 3. Under the action of the second vacuum pump 20, the raw material passes through the pre-coated membrane layer on the surface of the filter cloth 303 and the filter cloth 303 into the filter cartridge 302, and then enters the collection tank 5. The insoluble matter in the raw material is intercepted by the pre-coated membrane layer and, under the action of the scraper 9, is scraped off and falls at the waste outlet 10 at the bottom of the shell 301, ensuring the flux of the pre-coated membrane filter 3 and improving the filtration efficiency. When the pressure sensor 18 detects that the waste has accumulated to a certain amount, it transmits a signal to the external control system. The external control system opens the second electric valve 17, and the waste enters the waste storage tank 11 for recovery.

[0041] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for pre-treating corn soaking water, characterized in that: It includes interconnected pre-coating liquid batching tank, raw material storage tank, pre-coating membrane filter, waste liquid storage tank and collection tank; The pre-coating membrane filter includes a shell and a filter cartridge rotatably arranged in the shell, the surface of the filter cartridge is provided with a filter cloth, and the inner cavity of the filter cartridge is connected to the waste liquid storage tank and the collection tank respectively; the surface of the filter cartridge is provided with a plurality of filter holes, and a scraper is also provided on the inner wall of the shell, and the distance between one end of the scraper and the filter cloth on the surface of the filter cartridge is 3mm-40mm; the shell is provided with a waste outlet, and the waste outlet is connected to the waste storage tank.

2. The device for pretreatment of corn soaking water according to claim 1, characterized in that: The precoating liquid batching tank is also connected to the solvent storage tank and the precoating agent storage tank.

3. The device for pretreatment of corn soaking water according to claim 1, characterized in that: Agitators are provided in the pre-coating liquid batching tank and the pre-coating agent storage tank.

4. The device for pretreatment of corn soaking water according to claim 1, characterized in that: The filter cartridge is rotatably arranged in the housing via a rotating shaft, and the rotating shaft is connected to the output shaft of the motor.

5. The device for pretreatment of corn soaking water according to claim 1, characterized in that: The diameters of the plurality of filter holes are the same.

6. The device for pretreating corn soaking water according to claim 1, characterized in that: A first electric valve is provided on the connecting pipe between the pre-coating liquid batching tank and the pre-coating membrane filter. A liquid level sensor is provided in the pre-coating liquid batching tank. The liquid level sensor is interlocked with the first electric valve.

7. The device for pretreating corn soaking water according to claim 1, characterized in that: A material spraying disc is provided in the cavity formed by the shell and the filter cartridge, and the material spraying disc is communicated with a feed pipe in the pre-coating membrane filter.

8. The device for pre-treating corn soaking water according to claim 1, characterized in that: A second electric valve is provided at the waste outlet, and a pressure sensor is provided on the inner wall of the shell at the waste outlet. The pressure sensor is interlocked with the second electric valve.

9. The device for pre-treating corn soaking water according to claim 1, characterized in that: The waste liquid storage tank is communicated with the pre-coating liquid batching tank.

10. The device for pre-treating corn soaking water according to claim 1, characterized in that: The waste liquid storage tank is connected to a first vacuum pump, and the collection tank is connected to a second vacuum pump.

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