Corn starch production wastewater treatment and filtration device

Abstract

The utility model belongs to the technical field of wastewater treatment, and particularly relates to a corn starch production wastewater treatment filtering device which comprises a filter, the filter comprises a shell, the shell is provided with a water inlet and a water outlet, a filtering assembly and a push-pull rod are arranged in the shell, and the filtering assembly comprises a fixing frame and a filtering net. Mounting blocks are fixed to the left end and the right end of the fixing frame correspondingly, the push-pull rod is arranged above the filtering assembly, the bottom end of the push-pull rod is fixedly connected with the fixing frame through a connecting rod, the top end of the push-pull rod penetrates out of the top wall of the shell and extends outwards, limiting grooves are formed in the left inner side wall and the right inner side wall of the shell correspondingly, and guide rods are fixed in the limiting grooves; and the guide rods penetrate through the mounting blocks on the corresponding sides, and springs are connected between the top walls of the limiting grooves and the mounting blocks. The device not only can filter wastewater of corn starch, but also is convenient to clean the filter screen when the filter screen is blocked, the operation steps are simple, the filtering efficiency and the filtering effect are ensured, and the wastewater treatment efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of wastewater treatment, and in particular relates to a filtering device for treating wastewater from corn starch production. Background Art

[0002] Starch is a very important industrial raw material with a wide range of uses. In addition to being used for food and processed food, it is also widely used in industries such as textiles, papermaking, medicine, fermentation, casting, adhesives, chemicals, machinery and drilling.

[0003] About 80% of starch production uses corn as raw material. The main production process is: screening, soaking, crushing, germ separation, grinding, screening, sedimentation separation, starch washing, dehydration, drying, and production of finished starch. The production process of corn starch will generate a lot of wastewater. These wastewaters contain organic substances such as starch, sugar, protein, cellulose, etc., which will cause great wastewater pollution.

[0004] The current treatment process for corn starch wastewater is to pre-treat the wastewater first and then perform anaerobically treatment on the wastewater. The pre-treatment step generally involves adding chemical agents to the wastewater to adjust the pH value of the wastewater, then using a filter device to filter the residue, and then proceeding with sewage treatment. However, after a period of use, the existing filter device will accumulate a large amount of impurities on the filter screen, causing the mesh to be clogged, affecting the filtration efficiency and filtration effect. To clean the filter screen, it is necessary to first empty the sewage pool and then disassemble the filter device to replace the internal filter screen. The whole process is not only cumbersome and time-consuming, but also reduces the wastewater treatment efficiency.

[0005] Therefore, improvements are urgently needed. Utility Model Content

[0006] In response to the above-mentioned defects in the prior art, the utility model provides a corn starch production wastewater treatment filter device, including a filter, the filter including a shell, a water inlet is provided at the lower part of one side of the shell, and a water outlet is provided at the upper part of the other side of the shell, a filter assembly and a push-pull rod are provided inside the shell, the filter assembly includes a fixed frame and a filter screen detachably mounted in the fixed frame, the left and right ends of the fixed frame are respectively fixedly connected to the mounting blocks, the push-pull rod is vertically arranged above the filter assembly, the bottom end of the push-pull rod is fixedly connected to the fixed frame through a connecting rod, the top of the push-pull rod passes through the top wall of the shell and extends outward, and limiting grooves are provided on the left and right inner walls of the shell, and the limiting grooves are located between the water inlet and the water outlet, a guide rod is vertically fixed in the limiting groove, and the guide rod passes through the mounting block on the corresponding side, and a spring is connected between the top wall of the limiting groove and the mounting block.

[0007] Optionally, a protrusion is provided at the bottom of the limiting groove, and a groove matching the protrusion is provided at the bottom of the mounting block.

[0008] Specifically, when the filter assembly moves down to the lowest point along the limiting groove, the protrusion and the groove can fit together, thereby reducing the sewage from flowing along the limiting groove without being filtered.

[0009] Optionally, the water inlet of the shell is connected to a sewage inlet pipe and a clean water inlet pipe, and valves are respectively provided on the sewage inlet pipe and the clean water inlet pipe.

[0010] Optionally, a sealing door is provided at the front end of the shell, and an observation window is provided on the sealing door.

[0011] Specifically, the sealed door allows staff to inspect and repair the equipment in the shell and replace the filter; the observation window allows staff to check the operating conditions of the equipment in the shell.

[0012] Optionally, a sewage outlet is provided at the bottom of the shell, and a sealing cover is provided at the sewage outlet.

[0013] Specifically, the drain outlet facilitates the discharge of residual sewage and dirt.

[0014] Optionally, a flushing port is provided on the top of the shell.

[0015] Specifically, a flushing water pipe can be connected to the flushing port to flush the interior of the housing and the filter screen.

[0016] Optionally, a push handle is laterally provided at the top end of the push-pull rod.

[0017] Optionally, two first positioning rings are provided on the top of the shell, and the two first positioning rings are respectively provided on the left and right sides of the push-pull rod, and two second positioning rings are provided on the left and right ends of the bottom of the push handle, and the two second positioning rings are respectively opposite to the two first positioning rings up and down; a positioning rod is provided between each first positioning ring and the corresponding second positioning ring, and positioning hooks are provided at both ends of the positioning rod, and the positioning hooks match the center holes of each positioning ring.

[0018] Specifically, when the filter assembly moves down to the lowest point along the limit groove, the protrusion can be inserted into the corresponding groove, and at the same time, the two ends of the two positioning rods can be inserted into the corresponding first positioning ring and second positioning ring, thereby fixing the push-pull rod, thereby positioning the filter assembly to prevent displacement due to the influence of water pressure.

[0019] The present invention also includes other components that enable a corn starch production wastewater treatment filter device to operate normally, which are conventional technical means in this field. In addition, the devices or components not limited in the present invention all adopt conventional technical means in this field.

[0020] The working principle of the utility model is that when filtering, the push-pull rod is pushed downward to drive the filter assembly to move downward, so that the mounting block moves to the bottom of the limit groove along the guide rod, and the protrusion is inserted into the groove of the mounting block to improve the sealing. The two positioning rods are then fixed between the corresponding first positioning ring and the second positioning ring respectively, and then the push-pull rod is locked, and the waste water containing corn starch is passed into the sewage inlet pipe and pressurized. After the waste water is filtered through the filter mesh, impurities are filtered out, and the filtered waste water flows out of the filter through the water outlet; after a period of use, more impurities will accumulate on the bottom surface of the filter mesh, causing the mesh to be clogged. After the staff finds that the filtering efficiency of the filter is reduced, they can first close the valve on the sewage inlet pipe, open the sealing cover of the sewage outlet, discharge the accumulated water, and then pass clean water into the clean water inlet pipe. Washing water. Since the clogged impurities may contain organic matter such as lipids, starch, and protein, you can add appropriate amounts of enzyme preparations, weak acids and other substances to the washing water to better remove these organic matter. Wait until the washing water is added to the water level just covering the filter, then remove the positioning ring, pull the push-pull rod up and down, so that the washing water repeatedly washes the filter. At the same time, you can also connect the flushing water pipe to the flushing port, flush the filter from the top, and clean the impurities accumulated at the bottom of the filter and the dirt blocked in the mesh. After repeated cleaning, pull up the push-pull rod and lift the filter to prevent the cleaned filter from being contaminated by the cleaning sewage below. Then open the sealing cover to discharge the cleaning sewage. After the sewage is drained, fix the push-pull rod with the positioning rod to continue filtering the corn starch wastewater.

[0021] The beneficial effects of the utility model are that it has a simple structure and is easy to use. It can not only filter corn starch wastewater, but also facilitate cleaning of the filter screen when it is clogged. The operation steps are simple, ensuring the filtration efficiency and filtration effect, and improving the wastewater treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0024] Figure 2 This is a schematic diagram of the structure of the push-pull rod of the present invention when pulling the filter assembly upward.

[0025] Figure 3 for Figure 2 Enlarged schematic diagram of the structure of part A in the middle.

[0026] Figure 4 It is a structural schematic diagram of the positioning rod of the utility model.

[0027] Figure 5 This is a schematic diagram of the external structure of the filter of the present invention.

[0028] In the figure: 1. Shell, 2. Water inlet, 3. Water outlet, 4. Filter assembly, 5. Push-pull rod, 6. Fixed frame, 7. Filter screen, 8. Mounting block, 9. Connecting rod, 10. Limiting groove, 11. Guide rod, 12. Spring, 13. Bump, 14. Groove, 15. Sewage inlet pipe, 16. Clean water inlet pipe, 17. Sealing door, 18. Observation window, 19. Sewage outlet, 20. Flush port, 21. Push handle, 22. First positioning ring, 23. Second positioning ring, 24. Positioning rod, 25. Positioning hook. DETAILED DESCRIPTION

[0029] The present invention is described below in conjunction with the accompanying drawings and specific embodiments of the present invention. The description herein is intended only to explain the present invention and is not intended to limit the present invention. Based on the embodiments of the present invention, any modifications, equivalent substitutions, improvements, etc. made by those skilled in the art without creative work to all other embodiments obtained based on the embodiments of the present invention shall be included within the scope of protection of the present invention.

[0030] Example

[0031] like Figure 1-5 As shown, the embodiment of the present invention provides a corn starch production wastewater treatment filter device, including a filter, the filter includes a shell 1, a water inlet 2 is provided at the lower part of one side of the shell 1, a water outlet 3 is provided at the upper part of the other side of the shell 1, a filter assembly 4 and a push-pull rod 5 are provided inside the shell 1, the filter assembly 4 includes a fixed frame 6 and a filter screen 7 detachably mounted in the fixed frame 6, the left and right ends of the fixed frame 6 are respectively fixedly connected with mounting blocks 8, the push-pull rod 5 is vertically arranged above the filter assembly 4, the bottom end of the push-pull rod 5 is fixedly connected to the fixed frame 6 by a connecting rod 9, and the top end of the push-pull rod 5 passes through the top of the shell 1 The wall extends outward, and a limiting groove 10 is provided on the left and right inner walls of the shell 1, and the limiting groove 10 is located between the water inlet 2 and the water outlet 3. A guide rod 11 is vertically fixed in the limiting groove 10, and the guide rod 11 passes through the mounting block 8 on the corresponding side, and a spring 12 is connected between the top wall of the limiting groove 10 and the mounting block 8; a protrusion 13 is provided at the bottom of the limiting groove 10, and a groove 14 matching the protrusion 13 is provided at the bottom of the mounting block 8. When the filter assembly 4 moves down to the lowest point along the limiting groove 10, the protrusion 13 and the groove 14 can fit each other, reducing the sewage from flowing along the limiting groove 10 without being filtered.

[0032] In addition, the water inlet 2 of the shell 1 is connected to a sewage inlet pipe 15 and a clean water inlet pipe 16, and valves are provided on the sewage inlet pipe 15 and the clean water inlet pipe 16. A sealing door 17 is provided at the front end of the shell 1, and an observation window 18 is provided on the sealing door 17. The sealing door 17 is convenient for staff to inspect and repair the equipment in the shell 1 and replace the filter 7; the observation window 18 is convenient for staff to check the operating status of the equipment in the shell 1. A sewage outlet 19 is provided at the bottom of the shell 1, and a sealing cover is provided at the sewage outlet 19. The sewage outlet 19 is convenient for discharging residual sewage and dirt. A flushing port 20 is provided at the top of the shell 1. A flushing water pipe can be connected to the flushing port 20 to flush the interior of the shell 1 and the filter 7.

[0033] In addition, a push handle 21 is laterally provided at the top of the push-pull rod 5. Two first positioning rings 22 are provided at the top of the housing 1, and the two first positioning rings 22 are respectively provided on the left and right sides of the push-pull rod 5. Two second positioning rings 23 are provided at the left and right ends of the bottom of the push handle 21, and the two second positioning rings 23 are respectively opposite to the two first positioning rings 22. A positioning rod 24 is provided between each first positioning ring 22 and the corresponding second positioning ring 23. Both ends of the positioning rod 24 are provided with positioning hooks 25, and the positioning hooks 25 match the center holes of each positioning ring. When the filter assembly 4 moves down to the lowest point along the limiting groove 10, the protrusion 13 can be just inserted into the corresponding groove 14. At the same time, the two ends of the two positioning rods 24 can be just inserted into the corresponding first positioning ring 22 and second positioning ring 23, thereby fixing the push-pull rod 5, thereby positioning the filter assembly 4 to prevent displacement due to the influence of water pressure.

[0034] The working principle of the present invention is as follows: when filtering, the push-pull rod 5 is pushed downward to drive the filter assembly 4 to move downward, so that the mounting block 8 moves along the guide rod 11 to the bottom of the limit groove 10, and the protrusion 13 is inserted into the groove 14 of the mounting block 8 to improve the sealing performance. Then, the two positioning rods 24 are respectively fixed between the corresponding first positioning ring 22 and the second positioning ring 23, and then the push-pull rod 5 is locked, and the waste water containing corn starch is passed into the sewage inlet pipe 15 and pressurized. After the waste water is filtered by the filter screen 7, impurities are filtered out, and the filtered waste water flows out of the filter through the water outlet 3; after using for a period of time, more impurities will accumulate on the bottom surface of the filter screen 7, causing the mesh to be blocked. After the staff finds that the filtering efficiency of the filter is reduced, they can first close the valve on the sewage inlet pipe 15, open the sealing cover of the sewage outlet 19, discharge the accumulated water, and then drain the sewage to the sewage outlet 19. Cleaning water is introduced into the water inlet pipe 16. Since the blocked impurities may contain organic matter such as lipids, starch, and protein, enzyme preparations, weak acids and other substances can be added in appropriate amounts to the cleaning water to better remove these organic matter. Wait until the cleaning water is added to the water level that just covers the filter screen 7, then remove the positioning ring, pull the push-pull rod 5 up and down, so that the cleaning water repeatedly cleans the filter screen 7. At the same time, the flushing water pipe can be connected to the flushing port 20 to flush the filter screen 7 from the top to clean the impurities accumulated at the bottom of the filter screen 7 and the dirt blocked in the mesh. After repeated cleaning, pull up the push-pull rod 5 to lift the filter screen 7 to prevent the cleaned filter screen 7 from being contaminated by the cleaning sewage below. Then open the sealing cover to discharge the cleaning sewage. After the sewage is drained, fix the push-pull rod 5 with the positioning rod 24 to continue filtering the corn starch wastewater.

[0035] While the embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A corn starch production wastewater treatment filtration device, comprising a filter, characterized in that: The filter includes a shell, a water inlet is provided at the lower part of one side of the shell, and a water outlet is provided at the upper part of the other side of the shell, a filter assembly and a push-pull rod are provided inside the shell, the filter assembly includes a fixed frame and a filter screen arranged in the fixed frame, the left and right ends of the fixed frame are respectively fixedly connected with mounting blocks, the push-pull rod is vertically arranged above the filter assembly, the bottom end of the push-pull rod is fixedly connected to the fixed frame through a connecting rod, the top of the push-pull rod passes through the top wall of the shell and extends outward, and limiting grooves are provided on the left and right inner walls of the shell, and the limiting grooves are located between the water inlet and the water outlet, a guide rod is vertically fixed in the limiting groove, and the guide rod passes through the mounting block on the corresponding side, and a spring is connected between the top wall of the limiting groove and the mounting block.

2. The corn starch production wastewater treatment and filtration device according to claim 1, characterized in that: A convex block is arranged at the bottom of the limiting groove, and a groove matching the convex block is opened at the bottom of the mounting block.

3. The corn starch production wastewater treatment and filtration device according to claim 2, characterized in that: The water inlet of the shell is connected to a sewage inlet pipe and a clean water inlet pipe, and valves are respectively provided on the sewage inlet pipe and the clean water inlet pipe.

4. The corn starch production wastewater treatment and filtration device according to claim 3, characterized in that: A sealing door is provided at the front end of the shell, and an observation window is provided on the sealing door.

5. The corn starch production wastewater treatment and filtration device according to claim 4, characterized in that: A sewage outlet is provided at the bottom of the shell, and a sealing cover is provided at the sewage outlet.

6. The corn starch production wastewater treatment and filtration device according to claim 5, characterized in that: A flushing port is provided on the top of the shell.

7. The corn starch production wastewater treatment and filtration device according to claim 6, characterized in that: A push handle is horizontally arranged on the top end of the push-pull rod.

8. The corn starch production wastewater treatment and filtration device according to claim 7, characterized in that: Two first positioning rings are provided on the top of the shell, and the two first positioning rings are respectively provided on the left and right sides of the push-pull rod. Two second positioning rings are provided on the left and right ends of the bottom of the push handle, and the two second positioning rings are respectively opposite to the two first positioning rings up and down; a positioning rod is provided between each first positioning ring and the corresponding second positioning ring, and positioning hooks are provided at both ends of the positioning rod.

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