A starch production rinsing apparatus

Abstract

The utility model discloses a kind of starch production flushing equipment, it is related to flushing equipment, including rack;Supporting shaft, install on rack, supporting shaft is fixedly installed with spray head, supporting shaft is located the upper and lower side surface position of filter cloth or rubber belt, spray head is directly opposite filter cloth or rubber belt, frame is provided with the drive portion of supporting shaft rotation, when supporting shaft rotates, can swing with spray head, adjust the flushing angle to filter cloth or rubber belt.The utility model is set by servo motor, flywheel, connecting rod, rack and sector gear and is constituted the drive portion of supporting shaft, can drive the supporting shaft installed with multiple spray heads to controllable reciprocating swing.This makes that the water flow of ejection can impact filter cloth surface from different angles, different directions, solid particles adhered on filter cloth bear forward, vertical, rear multi-directional scouring force in turn, this dynamic, multi-dimensional cleaning mode can effectively disintegrate and peel fixed angle flushing stubborn blockage difficult to remove, greatly improve the thoroughness of cleaning.

Description

Technical Field

[0001] This utility model relates to the field of rinsing equipment, and in particular to a starch production rinsing equipment. Background Technology

[0002] Vacuum belt filters are a type of continuous solid-liquid separation equipment widely used in industries such as starch, chemicals, metallurgy, and environmental protection. They use vacuum suction to force the slurry onto a moving filter cloth, where it undergoes filtration, washing, and drying processes, ultimately forming a filter cake which is then removed. During this process, the filter cloth, as a key component in direct contact with the material, continuously traps solid particles on its surface. While larger particles form a filter cake layer that aids filtration, a large number of fine particles remain embedded in the gaps in the filter cloth. Over time, these particles gradually clog and harden the filter cloth, increasing filtration resistance and reducing air permeability, severely impacting filtration efficiency and filtrate quality.

[0003] To maintain stable equipment operation, filter cloths must be cleaned and regenerated regularly. In existing technologies, fixed high-pressure nozzles are typically installed along the path of the filter cloth after unloading and before returning to the feed end for unidirectional rinsing. However, this fixed-angle rinsing method has significant limitations: the rinsing water flow is unidirectional, resulting in insufficient scouring force for firmly adhered or deeply embedded particles, easily creating cleaning dead zones; simultaneously, the unidirectional impact force is insufficient to effectively shake and deform the filter cloth fibers, thus failing to completely remove blockages. Over time, the regeneration effect of the filter cloth is unsatisfactory, not only shortening its service life and increasing production costs, but also affecting the overall production line's capacity and product quality due to reduced filtration capacity. Therefore, developing a rinsing device capable of multi-angle, efficient, and dynamic cleaning is of great significance for solving the filter cloth clogging problem and improving the overall performance of vacuum belt filters. Summary of the Invention

[0004] The main purpose of this utility model is to provide a starch production washing device that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A starch production rinsing device, comprising: frame; The support shaft is mounted on the frame, and the nozzle is fixedly installed on the support shaft. The support shaft is located on the upper and lower sides of the filter cloth or rubber belt, and the nozzle is directly facing the filter cloth or rubber belt to realize dynamic spray cleaning of the filter cloth or rubber belt.

[0006] Preferably, the support shaft is fixedly mounted on the frame.

[0007] Preferably, the support shaft is rotatably mounted on the frame, and the frame is provided with a drive unit that rotates the support shaft. When the support shaft rotates, it can swing the nozzle to adjust the rinsing angle of the filter cloth or rubber belt.

[0008] Preferably, the drive unit includes a servo motor fixedly mounted on the frame, a flywheel fixedly mounted on the output end of the servo motor, and a connecting rod rotatably mounted on the edge of the flywheel; It also includes: a support plate, which is fixedly installed on the frame; The rack is slidably mounted on the support plate; One end of the support shaft extends from the frame, and a sector gear is fixedly installed on the extended end. The sector gear can mesh with the rack. The other end of the connecting rod is rotatably connected to the outer wall of the rack.

[0009] Preferably, the support plate has a groove, and the rack is slidably installed in the groove.

[0010] Preferably, the slide groove has a T-shaped structure, and a slider that matches the slide groove is fixedly installed at the bottom of the rack.

[0011] Preferably, both ends of the connecting rod are provided with shaft holes, and mounting shafts are fixedly installed on the edge of the flywheel and the outer side of the rack, with the mounting shafts rotatably installed in the shaft holes.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes a drive unit comprised of a servo motor, flywheel, connecting rod, rack, and sector gear to controllably reciprocate a support shaft equipped with multiple nozzles. This allows the sprayed water to impact the filter cloth surface from different angles and directions. Solid particles adhering to the filter cloth are subjected to multi-directional scouring forces—forward, vertical, and backward—in succession. This dynamic, multi-dimensional cleaning method effectively breaks down and removes stubborn blockages that are difficult to remove with fixed-angle rinsing, significantly improving cleaning thoroughness. The cleaned filter cloth is cleaner, does not adhere to starch, and increases starch yield. Attached Figure Description

[0013] Figure 1 This is a system diagram of the vacuum belt filter of this utility model; Figure 2 This is a structural diagram of the present utility model; Figure 3 This is a structural diagram showing the fixed connection between the support roller and the frame of this utility model; Figure 4 This is a structural diagram showing the rotatable connection between the support roller and the frame of this utility model; Figure 5 This is a structural diagram of the drive unit and frame of this utility model; Figure 6This is a structural diagram of the drive unit of this utility model; Figure 7 This is a diagram showing the rotational state of the nozzle of this utility model.

[0014] In the diagram: 1. Frame; 2. Support roller; 4. Filter cloth; 5. Support shaft; 6. Wastewater tank; 7. Nozzle; 8. Support plate; 9. Sector gear; 10. Rack; 11. Flywheel; 12. Connecting rod; 13. Slide groove; 14. Servo motor. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0016] Please refer to the figure. This embodiment provides a starch production rinsing device. This device is applied to a vacuum belt filter and is used to clean the filter cloth 4 of the vacuum belt filter. The structure of the vacuum belt filter is as follows: Figure 1 As shown, a high-strength rubber belt mounted on the frame 1 rotates under the action of a drive roller. The filter cloth 4, covering the rubber belt, moves forward at the same speed as the rubber belt due to the vacuum. Slurry is added by a feeding device. Under vacuum, solid particles are trapped on the filter cloth 4 to form a filter cake, which moves forward with the filter cloth 4 and the rubber belt, sequentially completing continuous operations such as filtration, filter cake washing, drying, slag discharge, and filter cloth 4 regeneration. The filtrate is discharged through the filter cloth 4, the grooves of the rubber belt, and the vacuum chamber, achieving solid-liquid separation. The vacuum pump of the continuous filter is connected to the vacuum system of the vacuum belt filter via a gas-liquid separator and a vacuum manifold, creating a vacuum inside the filter's vacuum chamber. Gypsum slurry is evenly distributed onto the filter cloth 4 of the filter by a feeder and is filtered under vacuum. The horizontally positioned filter surface allows larger solid particles to settle onto the filter cloth 4 first, forming a filter cake with larger pores. This helps reduce filtration resistance and also has a certain trapping effect on fine particles, thereby improving the clarity of the filtrate and reducing clogging of the filter cloth 4. The filtrate passes through the outlet holes on the filter cloth 4 and the rubber belt into the vacuum box, then flows into the vacuum main pipe through the drain pipe on the side of the vacuum box, and is finally recovered by the gas-liquid separator. The solid particles remaining on the filter cloth 4 form a filter cake, which is supported by the filter cloth 4 and moves smoothly forward on the rubber belt, passing through the filtration zone, washing zone, and drying zone in sequence, and finally being discharged at the discharge end of the filter.

[0017] After the filter cloth 4 and the rubber belt pass through the drive roller, they separate. The filter cake is discharged at the very end of the filter press. The filter cake is peeled off from the filter cloth 4 by the change in the radius of curvature of the filter cloth 4 on the discharge roller and the thin-bladed scraper.

[0018] The rubber belt and filter cloth 4 are cleaned and regenerated respectively. The filter cloth 4 is returned to the feed end through the tensioning and correction device to start a new operation.

[0019] In a vacuum belt filter, there are two friction belts with different coefficients of friction on their two sides, one for the moving rubber belt and the other for the fixed friction block. The seal between the friction belts and the friction block mounted on the vacuum box is a water-sealed structure. Low-pressure water is introduced into the grooves of the friction block, which serves both as a seal and as a lubricant, ensuring a vacuum seal and reducing wear on the friction block and friction belts.

[0020] The vacuum belt filter uses a water-lubricated structure for support, that is, water-lubricated support platforms are provided on both sides of the vacuum box, and low-pressure water is introduced into the middle of the lubrication support platforms to form a water film between the rubber belt and the water-lubricated platform, which reduces the wear of the rubber belt and extends the service life of the rubber belt, which is the existing technology.

[0021] like Figure 2 and Figure 3 As shown in this application, taking filter cloth 4 as an example, multiple support rollers 2 are rotatably installed on the frame 1, and the filter cloth 4 returns to the feed end by passing around the support rollers.

[0022] A support shaft 5 is fixedly installed on the frame 1, and multiple nozzles 7 are fixedly installed on the support shaft 5. The nozzles 7 are preferably high-pressure nozzles. The high-pressure nozzles are connected by hoses, and the hoses are connected to a water pump. The water pump is connected to an external water tank to provide water to the high-pressure nozzles.

[0023] The support shaft 5 is located on the upper and lower sides of the filter cloth 4, and the nozzle 7 is directly facing the filter cloth 4. When the filter cloth 4 moves, water is sprayed to clean the upper and lower surfaces of the filter cloth 4, thereby achieving dynamic cleaning of the filter cloth 4.

[0024] A wastewater tank 6 is also fixedly installed on the frame 1. The wastewater tank 6 is located directly below the filter cloth 4 and is used to collect and recycle the wastewater used to clean the filter cloth 4. The wastewater tank 6 is equipped with a drain outlet or drain pipe for discharging the collected wastewater.

[0025] In a further embodiment, to better achieve the effect of spray rinsing, the support shaft 5 is rotatably mounted on the frame 1. For example... Figure 4-6 As shown, the frame 1 is equipped with a drive unit that rotates the support shaft 5. The drive unit can rotate the support shaft 5 back and forth, and drive the nozzle 7 to swing back and forth about the rotation axis of the support shaft 5, thereby adjusting the rinsing angle of the filter cloth 4.

[0026] The drive unit includes a servo motor 14. The servo motor can control speed and has very accurate positioning. It can convert voltage signals into torque and speed to drive the controlled object. The rotor speed of the servo motor is controlled by the input signal and can respond quickly. In automatic control systems, it is used as an actuator and has characteristics such as small electromechanical time constant and high linearity. It can convert the received electrical signal into angular displacement or angular velocity on the motor shaft. Furthermore, the servo motor has a self-locking function, and there is no self-rotation when the signal voltage is zero.

[0027] The housing of the servo motor 14 is fixedly mounted on the frame 1. A flywheel 11 is fixedly mounted on the output end of the servo motor 14. A rotating shaft is fixedly mounted on the edge of the flywheel 11. A connecting rod 12 is rotatably mounted on the rotating shaft. A rack 10 is rotatably mounted on the other end of the connecting rod 12. Specifically, a support plate 8 is fixedly mounted on the frame 1. The rack 10 is slidably mounted on the support plate 8. A rotating shaft is fixedly mounted on one side of the rack 10. The end of the connecting rod 12 away from the flywheel 11 is rotatably connected to the rotating shaft.

[0028] One end of the support shaft 5 extends from the frame 1, and a sector gear 9 is fixedly installed on the extended end of the support shaft 5. The sector gear 9 meshes with the rack 10.

[0029] In this embodiment, a T-shaped groove 13 is provided on the support plate 8. A slider matching the groove 13 is fixedly installed at the bottom of the rack 10. The flywheel 11, the connecting rod 12 and the rack 10 form a crank-slider mechanism. When the flywheel 11 rotates, it can move the connecting rod 12. When the connecting rod 12 moves, it can move the rack 10 back and forth along the groove 13 on the support plate 8, thereby realizing the reciprocating meshing of the rack 10 and the sector gear 9, causing the sector gear 9 to rotate. The sector gear 9 causes the support shaft 5 to rotate, thereby realizing the swing of the nozzle 7.

[0030] Multiple nozzles 7 are provided on the support shaft 5 and are distributed in a fan shape along the outer circumference of the support shaft 5. For example... Figure 6 As shown, the area occupied by the nozzle 7 is a 45-degree arc surface. Correspondingly, the sector gear 9 is also a 45-degree arc sector structure. When the rack 10 rotates with the sector gear 9, the sector gear 9 can only rotate 45 degrees, achieving a 45-degree rotation angle for the nozzle 7. The advantage of this design is that it ensures that each nozzle 7 can spray and clean the filter cloth 4. The entire drive mechanism utilizes the mature crank-slider principle to convert rotational motion into linear motion, and then drives the nozzle to swing through gear and rack transmission. The structure is compact, and the power transmission is smooth. The sector gear is limited to rotating within a 45-degree angle range, ensuring that all nozzles can provide a comprehensive rinsing of the filter cloth within the effective sector area, without motion interference, and with high reliability.

[0031] like Figure 7 In the state shown in Figure a, when the sliding distance of rack 10 is the shortest, the direction along filter cloth 4 is forward (as shown in Figure a). Figure 7 (As shown by the middle arrow A), as Figure 7 As shown in Figure a, the nozzle at the tail end is almost perpendicular to the filter cloth 4, enabling vertical cleaning of the filter cloth 4. The closer the nozzle is to the front, the smaller the angle between it and the filter cloth 4, resulting in a greater impact force in the horizontal direction. By using nozzles at different angles, the cleaning effect on the filter cloth 4 can be improved.

[0032] When nozzle 7 rotates to Figure 7 When the nozzle is positioned at point b, the nozzle in the middle is perpendicular to the filter cloth 4, while the nozzles on the front and rear sides are inclined to the filter cloth 4. When the filter cloth 4 passes under the nozzle 7, it experiences backward scouring force, vertical scouring force, and forward scouring force along the direction of movement of the filter cloth 4. The solids adhering to the filter cloth 4 experience forces in different directions in succession, resulting in a better scouring effect compared to unidirectional scouring.

[0033] like Figure 7 As shown in Figure c, the nozzle at the front is almost perpendicular to the filter cloth 4, which can achieve vertical cleaning of the filter cloth 4. The closer the nozzle is to the rear, the smaller the angle between it and the filter cloth 4, and the greater the impact force generated in the horizontal direction.

[0034] During cleaning, the crank-slider mechanism can be used to make the nozzle 7 swing back and forth to achieve dynamic cleaning of the filter cloth 4. It should be noted that in order to ensure the cleaning effect, the swing speed of the nozzle 7 should be slightly greater than the forward speed of the filter cloth 4.

[0035] During the cleaning of filter cloth 4, multiple experiments can be conducted to adjust the angle of nozzle 7 by repeatedly swinging it using a crank-slider mechanism, thus finding the optimal cleaning angle. Due to the self-locking performance of the servo motor, once the angle of nozzle 7 is determined, it can be fixed in place. Using a servo motor as the drive source provides precise speed and position control. On one hand, a preset program can be used to make the nozzle swing at a uniform speed within the optimal cleaning angle range, achieving dynamic full-coverage cleaning; on the other hand, after finding the optimal rinsing angle, the self-locking function of the servo motor can be used to fix the nozzle assembly at that angle, achieving efficient rinsing at a fixed angle. This flexibility allows the equipment to intelligently adjust the cleaning mode according to different working conditions (such as material characteristics and degree of clogging), optimizing the cleaning effect and saving water resources.

[0036] The rinsing equipment of this application can also rinse rubber belts. A support roller 2 is rotatably mounted on the frame 1. The rubber belt passes around the support roller 2 and returns to the feed end. The support shaft 5 is set on the upper and lower sides of the rubber belt. The nozzle 7 is directly facing the rubber belt to achieve rinsing of the rubber belt (not shown in the figure). When cleaning the rubber belt, the wastewater tank 6 is located directly below the rubber belt to prevent the cleaning wastewater from falling onto the filter cloth 4. The rest of the structural design is the same as described above and will not be repeated here.

[0037] A more thorough cleaning means the filter cloth can better restore its initial air permeability and filtration performance, avoiding excessive stretching, wear, or chemical corrosion caused by long-term local clogging, thus effectively extending the filter cloth's service life. Simultaneously, this equipment is also suitable for cleaning rubber belts, preventing residue from abrading them, comprehensively ensuring the long-term stable operation of the core components of the vacuum belt filter, and reducing maintenance costs and downtime.

[0038] The cleaned filter cloth is cleaner and does not stick to starch, thus improving the starch yield.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A starch production rinsing device, characterized in that, include: Rack (1); A support shaft (5) is installed on the frame (1). A nozzle (7) is fixedly installed on the support shaft (5). The support shaft (5) is located on the upper and lower sides of the filter cloth or rubber belt. The nozzle (7) is facing the filter cloth or rubber belt to realize dynamic spray cleaning of the filter cloth or rubber belt.

2. The starch production rinsing equipment according to claim 1, characterized in that, The support shaft (5) is fixedly installed on the frame (1).

3. The starch production rinsing equipment according to claim 1, characterized in that, The support shaft (5) is rotatably mounted on the frame (1). The frame (1) is provided with a drive unit that rotates the support shaft (5). When the support shaft (5) rotates, it can swing the nozzle (7) to adjust the rinsing angle of the filter cloth or rubber belt.

4. The starch production rinsing equipment according to claim 3, characterized in that, The drive unit includes a servo motor (14) fixedly mounted on the frame, a flywheel (11) fixedly mounted at the output end of the servo motor (14), and a connecting rod (12) rotatably mounted at the edge of the flywheel (11). It also includes: a support plate (8), which is fixedly installed on the frame (1); The rack (10) is slidably mounted on the support plate (8); One end of the support shaft (5) extends from the frame (1), and a sector gear (9) is fixedly installed on the extended end. The sector gear (9) can mesh with the rack (10). The other end of the connecting rod (12) is rotatably connected to the outer wall of the rack (10).

5. A starch production rinsing device according to claim 4, characterized in that, The support plate (8) has a groove (13) and the rack (10) is slidably installed in the groove.

6. The starch production rinsing equipment according to claim 5, characterized in that, The slide groove (13) has a T-shaped structure, and a slider that matches the slide groove (13) is fixedly installed at the bottom of the rack (10).

7. A starch production rinsing device according to claim 4, characterized in that, Both ends of the connecting rod (12) are provided with shaft holes, and mounting shafts are fixedly installed on the edge of the flywheel (11) and the outer side of the rack (10). The mounting shafts are rotatably installed in the shaft holes.

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