Starch slurry and residue separation and dehydration system

Abstract

The utility model discloses a starch slurry and residue separation and dehydration system which comprises a slurry storage pool arranged on a mounting frame, a slurry discharge port is formed in the bottom of the slurry storage pool, a screen assembly is obliquely arranged above the slurry storage pool, a driving mechanism used for driving the screen assembly to swing is further arranged on the mounting frame, and the driving mechanism is arranged at the higher end of the screen assembly. A discharging opening is formed in the lower end of the screen assembly, a screw extruder is arranged at the lower end of the discharging opening, a liquid collecting barrel is further arranged, a liquid discharging opening of the screw extruder is communicated with the liquid collecting barrel through a water pipe, starch milk is formed after starch raw pulp is filtered through the screen assembly and then enters the pulp storage pool, and the starch milk in the pulp storage pool is discharged out of the pulp discharging opening. Solid residues formed after starch primary pulp discharged from the discharge port passes through the screw extruder are discharged from the tail end of the screw extruder, formed liquid is discharged into the liquid collecting barrel through the liquid discharge port, and the problems that in the prior art, when a vertical centrifugal screen is adopted for filtering, efficiency is low, and cost is high are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to starch production equipment field, especially relate to a kind of starch slurry residue separation dehydration system. BACKGROUND

[0002] With the increasing pursuit of healthy food consciousness of people, sweet potato starch processing develops rapidly, especially small processing plant sprouts after rain, processing equipment market is very active, currently, in processing process, the vertical centrifugal screen that industry is generally used to slurry residue separation link, but in actual operation process, there are many problems:

[0003] 1, inconvenient operation: vertical centrifugal screen is prone to starch loss when slurry is too dilute, causing excessive raw material loss. Conversely, too thick is prone to clog screen, need to stop machine dredging. Therefore vertical centrifugal screen is difficult to achieve normal continuous stable working state in production process. In addition, multiple devices work simultaneously, also need multiple staff to assist operation.

[0004] 2, high energy consumption: each centrifugal screen is equipped with two electric motors, the higher the yield, the more centrifugal screen number, energy consumption is also greater.

[0005] 3, large water consumption: the more centrifugal screen number, the greater water supply, water consumption reaches 35 tons or so per ton of starch.

[0006] 4, high investment cost: after slurry residue separation, due to high water content of residue, pump (slurry pump and press pump), filter press, dryer and other equipment are also needed.

[0007] Based on the above problems, starch slurry residue separation technology needs further improvement. INVENTION CONTENTS

[0008] The utility model aims at: in order to solve the problem that centrifugal screen is used in prior art for starch production, and propose a kind of starch slurry residue separation dehydration system.

[0009] In order to achieve the above object, the utility model discloses the following technical scheme: a starch slurry residue separation dewatering system, including the mounting bracket, is provided with the slurry storage tank on the mounting bracket, is provided with the slurry discharge port at the bottom of slurry storage tank, is provided with the screen assembly on the upper side of slurry storage tank and is inclined, still be provided with the drive mechanism on the mounting bracket, and the drive mechanism is used for driving screen assembly swing, and the drive mechanism sets up at the higher one end of screen assembly, and the lower one end of screen assembly is provided with the discharge port, and the lower end of discharge port is provided with the spiral extruder, and the feed inlet of spiral extruder corresponds with the discharge port of screen assembly, still be provided with the liquid collecting barrel, and the liquid discharge port of spiral extruder is communicated with the liquid collecting barrel through the water pipe, and the starch raw pulp is formed starch milk after filtering through screen assembly and then enters the slurry storage tank, and the starch milk in the slurry storage tank is discharged by the slurry discharge port, and the solid dregs formed after the starch raw pulp discharged by the discharge port passes through spiral extruder is discharged by the end of spiral extruder, and the liquid is discharged into the liquid collecting barrel by the liquid discharge port.

[0010] As further description of the above technical solution: the upper side of the screen assembly is provided with a slurry conveying pipe, and a slurry conveying port is arranged between the slurry conveying pipe and the screen assembly. The liquid collecting barrel and the slurry conveying port are communicated through a circulating water pipe. A water pump is arranged on the circulating water pipe.

[0011] As further description of the above technical solution: the screen assembly includes a mounting frame, which is arranged obliquely. The mounting frame is suspended on the mounting bracket by chains at four corners. The mounting frame is located above the opening of the slurry storage tank. A filter screen is arranged in the mounting frame. A vibration motor is further arranged on the mounting frame.

[0012] As further description of the above technical solution: vibration motors are arranged above and below the mounting frame. A positioning frame is slidably arranged on the mounting frame. The positioning frame can be fixed at any position within the sliding range. The vibration motors are fixedly arranged on the positioning frame. A protective cover is arranged on the vibration motor below the mounting frame.

[0013] As further description of the above technical solution: the filter screen is provided with two layers, i.e., a fixed filter screen and a movable filter screen. The fixed filter screen is fixedly arranged on the mounting frame. The movable filter screen is arranged above the fixed filter screen and in contact with the fixed filter screen. The movable filter screen is slidably arranged along the length direction of the mounting frame.

[0014] As further description of the above technical solution: the drive mechanism includes a swing arm, a transmission wheel, and a drive motor. One end of the swing arm is rotatably connected to the screen assembly. The other end is rotatably connected to the eccentric shaft of the transmission wheel. The rotating shaft of the transmission wheel is driven by the output shaft of the drive motor through a belt.

[0015] As further description of the above technical solution: an isolation cover is arranged above the slurry storage tank. The screen assembly is located in the isolation cover.

[0016] As a further description of the above technical solution: the slurry conveying port is in a strip shape, and the slurry conveying port is located directly above the higher end of the screen assembly.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present application are:

[0018] (1) The system provided by the present application prolongs the residence time of the starch raw slurry on the screen through the rectangular elongated filter screen, so that the normal dewatering time of the starch raw slurry is reached, and the moisture content of impurities after filtration of the starch raw slurry is reduced. The vibration motor arranged on the filter screen assembly can increase the shaking of the mounting frame and the filter screen in the vertical direction, and the reciprocating movement of the screen can further accelerate the filtration of the starch raw slurry.

[0019] (2) One driving motor drives the screen assembly to reciprocate, which can replace multiple centrifugal screens in the prior art. According to the calculation, the present application can save 8% to 10% of the power for the same output of starch milk. Each centrifugal screen in the prior art is equipped with a dedicated water supply device, but the present application only needs one set of water supply device to meet the actual production needs. According to the calculation, the present application can save about 60% of the water consumption for the same output of starch milk.

[0020] (3) The screen of the present application is long, and the size of the slurry concentration has little effect on the separation of the starch raw slurry and the slurry during the separation process. There is no phenomenon of starch loss. The overflow of part of the starch raw slurry during the separation process is reduced to the greatest extent, thereby achieving the purpose of improving the starch yield in the later stage. After reasonable use of the screw extruder, the slurry impurities are extruded and dried again, and the extruded material is subjected to "secondary filtration", so that all links during the production of the system do not appear "direct discharge" process, reducing the loss and significantly improving the economic benefit.

[0021] (3) The double-layer filter screen is adopted, and the movable filter screen of the upper layer moves relatively with the fixed filter screen under the action of the reciprocating movement of the mounting frame and the vibration motor, thereby preventing the filter screen from being blocked. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The side view of the present application is not shown in the isolation cover;

[0023] Figure 2 The present application is a three-dimensional structure schematic view;

[0024] Figure 3 The three-dimensional structure schematic view of the present application is not shown in the isolation cover;

[0025] Figure 4 The three-dimensional structure schematic view of the filter screen assembly of the present application;

[0026] Figure 5The utility model discloses a three-dimensional structure schematic diagram of positioning frame.

[0027] Figure 6 The utility model discloses a double-layer filter screen structure schematic diagram.

[0028] Legend: 1, mounting frame, 2, slurry storage tank, 3, slurry discharge port, 4, screen assembly, 5, mounting frame, 6, chain, 7, fixed filter screen, 8, movable filter screen, 9, fixed groove, 10, sliding frame, 11, vibration motor, 12, positioning frame, 13, protective cover, 14, waist type hole, 15, positioning bolt, 16, locking nut, 17, driving mechanism, 18, swing arm, 19, transmission wheel, 20, driving motor, 21, discharge port, 22, spiral extruding machine, 23, feed inlet, 24, liquid collecting barrel, 25, slurry conveying pipe, 26, slurry conveying port, 27, circulating water pipe, 28, isolation cover. DETAILED DESCRIPTION

[0029] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0030] Please refer to Figures 1-6 The utility model provides a kind of starch slurry residue separation dehydration system technical scheme:

[0031] A starch slurry residue separation dehydration system is used for filtering and separating starch raw pulp. The starch raw pulp is a slurry mixture formed by mixing cleaned and crushed sweet potatoes (or other raw materials) with water. It contains starch particles, fibers, cell fragments and other impurities. The state of the starch raw pulp is viscous and turbid, with a lot of suspended matter.

[0032] A starch slurry residue separation dehydration system includes a mounting frame 1 made of food-grade 304 stainless steel. The mounting frame 1 is in the shape of a rectangular frame. Inside the mounting frame 1, there is a slurry storage tank 2 along its length direction. In this embodiment, the slurry storage tank 2 is in the shape of a semicircular barrel with an open upper end. The slurry storage tank 2 is made of food-grade 304 stainless steel. The bottom of the slurry storage tank 2 is provided with a slurry discharge port 3. The slurry discharge port 3 is connected to a pipeline pump to directly deliver the starch milk to a cyclone.

[0033] A screen assembly 4 is obliquely arranged above the slurry tank 2, the screen assembly 4 comprises a mounting frame 5, the mounting frame 5 is obliquely arranged, the mounting frame 5 is suspended on the mounting rack 1 through a chain 6, and the oblique angle of the mounting frame 5 can be adjusted through the length of the chain 6. In the embodiment, the left side of the mounting frame 5 is higher than the right side, the mounting frame 5 is located in the projection range of the upper opening of the slurry tank 2 in the top view, a filter screen is arranged in the mounting frame 5, the filter screen comprises two layers, i.e., a fixed filter screen 7 and a movable filter screen 8, the fixed filter screen 7 is fixedly arranged on the mounting frame 5, the movable filter screen 8 is arranged above the fixed filter screen 7 and in contact with the fixed filter screen 7, and the movable filter screen 8 is slidingly arranged along the length direction of the mounting frame 5. Specifically, a fixed groove 9 is formed in the inner circumferential side of the mounting frame 5, the fixed filter screen 7 is fixed in the fixed groove 9, the movable filter screen 8 is fixed on a sliding frame 10, the length of the sliding frame 10 is less than the length of the mounting frame 5, the width of the sliding frame 10 is matched with the width of the mounting frame 5, the sliding frame 10 is slidingly arranged in the fixed groove 9, the sliding frame 10 slides along the fixed groove 9 of the mounting frame 5, the movable filter screen 8 is in contact with the fixed filter screen 7, and the fixed filter screen 7 and the movable filter screen 8 are both 80-mesh screens.

[0034] Vibration motors 11 are arranged above and below the mounting frame 5, a positioning rack 12 is slidingly arranged on the mounting frame 5, the positioning rack 12 can be fixed at any position in the sliding range, the vibration motors 11 are fixedly arranged on the positioning rack 12, and a protective cover 13 is arranged on the vibration motor 11 arranged below the mounting frame 5. The protective cover 13 prevents starch milk from entering the vibration motor 11. Specifically, a waist-shaped hole 14 is formed in the positioning rack 12 along the length direction of the mounting frame 5, positioning bolts 15 are fixedly arranged on the mounting frame 5, the positioning bolts 15 are located in the waist-shaped hole 14, and the position of the positioning rack 12 is locked through a locking nut 16 after the position of the positioning rack 12 is adjusted. In the embodiment, four vibration motors 11 are arranged on the positioning rack 12, two of which are arranged above the mounting frame 5, and the other two are arranged below the mounting frame 5. The two vibration motors 11 arranged above the mounting frame 5 are symmetrically arranged about the front and back of the mounting frame 5, and the two vibration motors 11 arranged below the mounting frame 5 are symmetrically arranged about the front and back of the mounting frame 5.

[0035] A driving mechanism 17 is further arranged on the mounting rack 1, the driving mechanism 17 is used for driving the screen assembly 4 to swing, the driving mechanism 17 is arranged at the higher end of the screen assembly 4, specifically, the driving mechanism 17 is arranged at the left end of the mounting frame 5, the driving mechanism 17 comprises a swing arm 18, a transmission wheel 19 and a driving motor 20, one end of the swing arm 18 is rotationally connected with the screen assembly 4, the other end is rotationally connected with an eccentric shaft of the transmission wheel 19, and the transmission wheel 19 is driven by the driving motor 20 through a belt.

[0036] The lower end of the screen assembly 4 is provided with a discharge port 21, and the discharge port 21 is arranged at the right end of the mounting frame 5. A screw extruder 22 is arranged at the lower end of the discharge port 21. The feed port 23 of the screw extruder 22 corresponds to the discharge port 21 of the screen assembly 4. A liquid collecting barrel 24 is further arranged. The liquid discharge port of the screw extruder 22 is communicated with the liquid collecting barrel 24 through a water pipe. A slurry conveying pipe 25 is arranged above the screen assembly 4. The slurry conveying pipe 25 is used for conveying the starch raw slurry. A slurry conveying port 26 is arranged between the slurry conveying pipe 25 and the screen assembly 4. The slurry conveying port 26 is in the shape of a strip, so that the starch raw slurry can be uniformly discharged along the width direction of the filter screen. The slurry conveying port 26 is located directly above the left end of the mounting frame 5. The liquid collecting barrel 24 is communicated with the slurry conveying port 26 through a circulating water pipe 27. A water pump (not shown in the figure) is arranged on the circulating water pipe 27.

[0037] A shielding cover 28 is arranged above the slurry storage tank 2. The screen assembly 4 is located in the shielding cover 28.

[0038] The starch raw slurry in the slurry conveying pipe 25 is discharged through the slurry conveying port 26. After the starch raw slurry is filtered through the screen assembly 4, starch milk is formed and then enters the slurry storage tank 2. The starch milk in the slurry storage tank 2 is discharged through the slurry discharge port 3. The slurry discharge port 3 is connected to a pipeline pump, which directly conveys the starch milk to a cyclone. The next process is performed. The solid dregs formed after the starch raw slurry discharged through the discharge port 21 passes through the screw extruder 22 are discharged from the end of the screw extruder 22. The liquid is discharged into the liquid collecting barrel 24 through the liquid discharge port. The liquid in the liquid collecting barrel 24 is discharged through the slurry conveying port 26 again for secondary filtration.

[0039] When the starch raw slurry is filtered through the filter screen assembly, the driving motor 20 works. The mounting frame 5 reciprocates left and right under the action of the swing arm 18 and the transmission wheel 19. The vibration motor 11 located at the right end vibrates, so that the starch raw slurry is filtered from the inclined upper end of the filter screen. The filtered starch raw slurry flows into the slurry storage tank 2. The starch particles, fibers, cell fragments and other impurities located above the filter screen stay on the filter screen. Under the action of the vibration motor 11 and the driving motor 20, the above-mentioned impurities flow to the discharge port 21. According to the length of the screen and the yield of the starch raw slurry, the position of the vibration motor 11 is adjusted to control the flow rate and state of the starch raw slurry filtered on the filter screen.

[0040] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this. Those skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A starch slurry dreg separation and dewatering system characterized by The installation frame (1) is provided with a slurry storage tank (2), the bottom of the slurry storage tank (2) is provided with a slurry discharge port (3), the upper side of the slurry storage tank (2) is provided with a screen assembly (4) in an inclined manner, the installation frame (1) is further provided with a driving mechanism (17) for driving the screen assembly (4) to swing, the driving mechanism (17) is arranged at the higher end of the screen assembly (4), the lower end of the screen assembly (4) is provided with a discharge port (21), the lower end of the discharge port (21) is provided with a spiral extruder (22), the feed inlet (23) of the spiral extruder (22) corresponds to the discharge port (21) of the screen assembly (4), a liquid collecting barrel (24) is further arranged, the liquid discharge port of the spiral extruder (22) is communicated with the liquid collecting barrel (24) through a water pipe, the starch raw slurry is filtered by the screen assembly (4) to form starch milk and then enters the slurry storage tank (2), the starch milk in the slurry storage tank (2) is discharged through the slurry discharge port (3), the solid dregs formed by the starch raw slurry discharged through the discharge port (21) after passing through the spiral extruder (22) is discharged from the tail end of the spiral extruder (22), and the liquid is discharged into the liquid collecting barrel (24) through the liquid discharge port.

2. The starch slurry dewatering system of claim 1, wherein: The upper side of the screen assembly (4) is provided with a slurry conveying pipe (25), a slurry conveying port (26) is arranged between the slurry conveying pipe (25) and the screen assembly (4), the liquid collecting barrel (24) and the slurry conveying port (26) are communicated through a circulating water pipe (27), and a water pump is arranged on the circulating water pipe (27).

3. The starch slurry dewatering system of claim 2, wherein: The screen assembly (4) comprises an installation frame (5), the installation frame (5) is arranged in an inclined manner, the four corners of the installation frame (5) are suspended on the installation frame (1) through chains (6), the installation frame (5) is located above the opening of the slurry storage tank (2), a filter screen is arranged in the installation frame (5), and a vibration motor (11) is further arranged on the installation frame (5).

4. The starch slurry dewatering system of claim 3, wherein: Vibration motors (11) are arranged above and below the installation frame (5), a positioning frame (12) is slidably arranged on the installation frame (5), the positioning frame (12) can be fixed at any position in the sliding range, the vibration motor (11) is fixedly arranged on the positioning frame (12), and a protective cover (13) is arranged on the vibration motor (11) arranged below the installation frame (5).

5. The starch slurry dewatering system of claim 3, wherein: The filter screen is provided with two layers, namely a fixed filter screen (7) and a movable filter screen (8), the fixed filter screen (7) is fixedly arranged on the installation frame (5), the movable filter screen (8) is arranged above the fixed filter screen (7) and in contact with each other, and the movable filter screen (8) is slidably arranged along the length direction of the installation frame (5).

6. The starch slurry dewatering system of claim 1, wherein: The driving mechanism (17) comprises a swing arm (18), a transmission wheel (19) and a driving motor (20), one end of the swing arm (18) is rotatably connected with the screen assembly (4), the other end is rotatably connected with an eccentric shaft of the transmission wheel (19), and the rotating shaft of the transmission wheel (19) is driven by the output shaft of the driving motor (20) through a belt.

7. The starch slurry dewatering system of claim 1, wherein: An isolation cover (28) is arranged above the slurry storage tank (2), and the screen assembly (4) is located in the isolation cover (28).

8. The starch slurry dewatering system of claim 2, wherein: The pulp feeding port (26) is in the shape of a long strip, and is located directly above the higher end of the screen assembly (4).

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