Foaming material filtering device

Abstract

The utility model discloses a foaming material filtering device relates to foaming material filtering technical field, the utility model discloses a filtering box, and the top of filtering box is fixed with storage bin through support plate, and the bottom of storage bin is linked with filtering box through the blanking cylinder intercommunication, and the inside installation of blanking cylinder has two groups of broken rollers, and one end of two groups of broken rollers is fixed with driven bevel gear, the utility model discloses the intermittent type ration blanking and the agglomeration roll -in crushing function are combined through mechanical linkage, can accurate control the raw material amount of entering the filtering box to avoid the material accumulation of screen surface, also can pass through the shearing extrusion effect of counter-rotating broken roller effectively broken larger agglomeration, makes the raw material first after entering the screen passes through the pre-dispersion treatment, thereby greatly reduces the screen load and agglomeration residual rate, promotes the uniformity and fullness of filtering process, solves the problem of traditional device feeding amount out of control and agglomeration processing not thoroughly.

Description

Technical Field

[0001] This utility model relates to the field of foamed material filtration technology, specifically a foamed material filtration device. Background Technology

[0002] Polyurethane foam is a high-molecular polymer made from isocyanate and polyether as the main raw materials, mixed with various additives such as foaming agents, catalysts, and flame retardants through specialized equipment, and then foamed on-site by high-pressure spraying. During the production of polyurethane materials, the foaming powder is gradually added to the foaming tank for foaming operations. In order to prevent clumps of powder from directly entering the foaming tank during the feeding process, a filtration device is required to filter the foaming powder.

[0003] The prior art discloses a foamed material filtration device with application number CN202222663940.1. The beneficial effects of the new device are that it facilitates the opening of the filter box, thereby facilitating the cleaning of the screen surface. This solves the problem of complex cleaning steps and high labor intensity in the prior art. It also allows for timely screen cleaning after foamed material filtration, improving cleaning efficiency. However, in actual use, manual feeding is often used, which not only increases the workload of operators but also makes it difficult to accurately control the amount of material added due to human experience. This can easily lead to a large amount of raw material accumulating rapidly on the screen surface, forming a material layer with excessive thickness, affecting the screening and filtration efficiency. Furthermore, the device drives the stirring blades to rotate and stir the foamed material, reducing the possibility of agglomeration. However, due to the limitations of the stirring blade radius and axial range of action, dead zones are easily formed in the area from the edge of the box wall and the area from the bottom of the screen. This prevents the agglomerated lumps from contacting the stirring blades, resulting in a low agglomeration rate and insufficient filtration. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a foamed material filtration device to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a foamed material filtration device, comprising a filter box, a storage bin fixed to the top of the filter box by a support plate, the bottom of the storage bin being connected to the filter box by a feeding cylinder, two sets of crushing rollers installed inside the feeding cylinder, and driven bevel teeth fixed to one end of each set of crushing rollers; a motor, a rotating shaft, and a reciprocating screw installed on the inner side of the support plate; a slider slidably connected to the outer surface of the reciprocating screw; a sealing plate fixed to the top of the slider by a fixing rod; an opening on the top of the sealing plate; and a driving bevel tooth fixed in the middle of the outer surface of the rotating shaft, the driving bevel tooth meshing with the driven bevel tooth; a filter assembly is installed inside the filter box.

[0006] Furthermore, the filter assembly includes a hydraulic cylinder mounted on the outer surface of the filter box and a rotating shaft mounted inside the filter box. An arc-shaped filter groove is fixed on the outer surface of the rotating shaft. A transmission gear is fixed at one end of the rotating shaft. A rack is connected to the output end of the hydraulic cylinder, and the rack meshes with the transmission gear.

[0007] By adopting the above technical solution, the filter assembly is driven by a hydraulic cylinder to move the rack back and forth. The rack meshes with the transmission gear to drive the rotating shaft to rotate, causing the arc-shaped filter tank fixed on the shaft to oscillate at high frequency. This oscillation structure can expand the contact area between the material and the filter holes, reduce screen hole clogging by using vibration, thereby significantly improving filtration efficiency and avoiding material retention.

[0008] Furthermore, a maintenance opening is provided on the lower outer surface of the filter box, and a slag removal door is installed on the lower outer surface of the arc-shaped filter groove.

[0009] By adopting the above technical solution, the maintenance port allows maintenance personnel to directly access the bottom of the arc-shaped filter tank; the slag removal door below the outer surface of the filter tank can be quickly opened for staff to regularly clean the impurities and clumps of material remaining during the filtration process. The two work together to achieve convenient maintenance.

[0010] Furthermore, the output end of the motor is connected to a drive gear, and a driven gear is installed on one side of the outer surface of the rotating shaft, with the drive gear meshing with the driven gear.

[0011] By adopting the above technical solution, the driving gear is rotated by the motor, and the driven gear drives the rotating shaft to rotate synchronously to transmit driving force, thereby realizing the stable transmission of power from the motor to the rotating shaft.

[0012] Furthermore, the bottom of the filter box is provided with a discharge port, and the two sides of the bottom of the filter box are inclined towards the discharge port.

[0013] By adopting the above technical solution, the inclined structure uses gravity to guide the filtered material to automatically converge to the discharge port, avoiding material stagnation and accumulation at the bottom of the box, ensuring smooth discharge and reducing interference of residual material with subsequent filtration.

[0014] Furthermore, a control panel is installed above the outer surface of the filter box, and the hydraulic cylinder and motor are both electrically connected to the control panel.

[0015] By adopting the above technical solution, the control panel integrates a human-machine interface and a programmable controller, and forms a control closed loop with the hydraulic cylinder and motor through electrical circuits; the operator can set parameters such as motor speed, hydraulic cylinder swing frequency and stroke through the control panel to achieve automated and precise control of the crushing and screening process.

[0016] Furthermore, a synchronous pulley is installed at one end of the reciprocating lead screw and at one end of the rotating shaft, and a synchronous belt meshes on the outer surfaces of the two sets of synchronous pulleys.

[0017] By adopting the above technical solution, when the motor drives the rotating shaft to rotate, the cooperation between the synchronous pulley and the synchronous belt enables the reciprocating screw to obtain rotational power with the same transmission ratio, thereby realizing intermittent feeding and crushing linkage.

[0018] Furthermore, the feed cylinder has movable openings on both sides, and the inner side of the movable opening is provided with a sealing rubber layer, and the sealing plate slides in conjunction with the movable opening.

[0019] By adopting the above technical solution, the movable openings on both sides of the feeding cylinder serve as sliding channels for the sealing plate. An oil-resistant and wear-resistant sealing rubber layer (Shore hardness 60-70A) is attached to its inner side to form a flexible sealing surface, which can ensure that no powder is carried out and wasted when the sealing plate moves left or right.

[0020] Furthermore, the interior of the storage bin is inclined along the direction of the feeding cylinder at its lower part.

[0021] By adopting the above technical solution, a guide slope is formed at a 15°-25° angle extending downwards towards the feed cylinder inside the storage silo. This slope is mirror polished (surface roughness Ra≤0.8μm) or coated with a Teflon anti-stick coating (thickness 50-80μm). Gravity guides the material to automatically slide down the slope to the feed cylinder inlet, reducing material flow resistance and ensuring that the raw materials in the storage silo can flow into the feed cylinder by gravity, thereby improving material utilization and reducing the frequency of manual intervention.

[0022] In summary, the present invention has the following main advantages: 1. This utility model, through the arrangement of a motor, rotating shaft, driving gear, driven gear, driving bevel gear, driven bevel gear, crushing roller, reciprocating screw, synchronous belt, synchronous pulley, storage bin, slider, fixed rod, and sealing plate, allows the worker to temporarily store the raw material to be filtered in the storage bin during filtration. After the motor is started, the motor rotates, driving the driving gear to rotate. The driving gear drives the driven gear, causing the rotating shaft to rotate synchronously. The driving bevel gear on the rotating shaft then drives the driven bevel gear to rotate. Simultaneously, the rotating shaft, through the cooperation of the synchronous pulley and synchronous belt, drives the reciprocating screw to rotate. The rotation of the reciprocating screw causes the slider to move back and forth along its axis. The slider, through the fixed rod, drives the sealing plate to perform reciprocating linear motion in the feeding cylinder. When the opening on the sealing plate is connected to the feeding cylinder, the raw material to be filtered is stored in the storage bin. Raw materials in the hopper can fall into the feeding cylinder. Feeding is paused when the opening is misaligned, thus achieving intermittent quantitative feeding control. The rotation of the driven conical teeth drives two sets of crushing rollers to rotate in opposite directions. The rotating crushing rollers can fully crush the lumpy material during the falling process. This structure combines intermittent quantitative feeding with lumpy crushing function through mechanical linkage. It can accurately control the amount of raw material entering the filter box to avoid material accumulation on the screen surface, and effectively crush larger lumps through the shearing and squeezing action of the rotating crushing rollers. This allows the raw material to undergo pre-dispersion treatment before entering the screen, thereby significantly reducing the screen load and lumpy residue rate, improving the uniformity and completeness of the filtration process, and solving the problems of uncontrolled feeding and incomplete lumpy treatment in traditional devices.

[0023] 2. This utility model utilizes the coordinated arrangement of a hydraulic cylinder, a rack, a transmission gear, a rotating shaft, and an arc-shaped filter trough. When the crushed raw material intermittently falls into the arc-shaped filter trough from above, the reciprocating extension and retraction of the hydraulic cylinder piston rod drives the rack to perform linear reciprocating motion in the horizontal direction. The meshing of the rack with the external teeth of the transmission gear causes the gear to rotate regularly in alternating directions. The transmission gear, connected by a key, drives the rotating shaft to rotate synchronously. The arc-shaped filter troughs fixed at both ends of the rotating shaft oscillate back and forth with the shaft at ±30°-±45°. During the oscillation, the material spreads evenly along the curved surface of the filter trough under the combined action of centrifugal force and gravity, avoiding concentrated accumulation. Compared to traditional static filter troughs, the oscillating arc-shaped filter trough increases the contact area between the material and the filter holes through high-frequency reciprocating oscillation (the frequency can be adjusted by the hydraulic cylinder via the control panel), achieving dynamic and efficient filtration of the crushed material. Attached Figure Description Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the filter box of this utility model; Figure 3 This is a schematic diagram of the sealing plate structure of this utility model; Figure 4 This is a schematic diagram of the feeding cylinder structure of this utility model; Figure 5 This is a schematic diagram of the arc-shaped filter tank structure of this utility model. Figure 6 This is a schematic diagram of the crushing roller structure of this utility model.

[0024] In the diagram: 1. Filter box; 2. Support plate; 3. Storage bin; 4. Feed cylinder; 5. Motor; 6. Rotating shaft; 7. Reciprocating screw; 8. Synchronous pulley; 9. Synchronous belt; 10. Control panel; 11. Hydraulic cylinder; 12. Gear rack; 13. Rotating shaft; 14. Transmission gear; 15. Maintenance port; 16. Arc-shaped filter tank; 17. Slag cleaning door; 18. Crushing roller; 19. Driven bevel gear; 20. Drive gear; 21. Driven gear; 22. Driven bevel gear; 23. Slider; 24. Fixed rod; 25. Sealing plate; 26. Through port; 27. Discharge port. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0026] The embodiments of this utility model will be described below based on its overall structure.

[0027] Example 1: A foamed material filtration device, such as Figures 1-6As shown, the system includes a filter box 1. A storage bin 3 is fixed to the top of the filter box 1 via a support plate 2. The bottom of the storage bin 3 is connected to the filter box 1 via a feeding cylinder 4. Two sets of crushing rollers 18 are installed inside the feeding cylinder 4, and one end of each set of crushing rollers 18 is fixed with a driven bevel gear 19. A motor 5, a rotating shaft 6, and a reciprocating screw 7 are installed on the inner side of the support plate 2. A drive gear 20 is connected to the output end of the motor 5. A driven gear 21 is installed on one side of the outer surface of the rotating shaft 6, and the drive gear 20 meshes with the driven gear 21. The motor 5 drives the drive gear 20 to rotate, which in turn drives the rotating shaft 6 to rotate synchronously via the driven gear 21, thus transmitting driving force from the motor 5 to the rotating shaft. For stable transmission of 6, a slider 23 is slidably connected to the outer surface of the reciprocating screw 7. A sealing plate 25 is fixed to the top of the slider 23 by a fixing rod 24. An opening 26 is provided on the top of the sealing plate 25. An active bevel tooth 22 is fixed in the middle of the outer surface of the rotating shaft 6, and the active bevel tooth 22 meshes with the driven bevel tooth 19. Synchronous pulleys 8 are installed at one end of the reciprocating screw 7 and one end of the rotating shaft 6, and synchronous belts 9 mesh on the outer surfaces of the two sets of synchronous pulleys 8. When the motor 5 drives the rotating shaft 6 to rotate, the cooperation between the synchronous pulleys 8 and the synchronous belts 9 enables the reciprocating screw 7 to obtain rotational power with the same transmission ratio, thereby realizing intermittent feeding and crushing linkage. Movable openings are provided on both sides of the feeding cylinder 4. The inner side of the sealing plate 25 is provided with a sealing rubber layer (not shown in the figure). The sealing plate 25 slides with the movable opening. The movable openings on both sides of the feeding cylinder 4 serve as sliding channels for the sealing plate 25. An oil-resistant and wear-resistant sealing rubber layer (Shore hardness 60-70A) is attached to its inner side to form a flexible sealing surface, which can ensure that no powder is carried out and wasted when the sealing plate 25 moves left and right. The filter box 1 is equipped with a filter assembly. The filter assembly includes a hydraulic cylinder 11 installed on the outer surface of the filter box 1 and a rotating shaft 13 installed inside the filter box 1. The outer surface of the rotating shaft 13 is fixed with an arc-shaped filter groove 16. One end of the rotating shaft 13 is fixed with a transmission gear 14. The output end of the hydraulic cylinder 11 A rack 12 is connected and meshes with a transmission gear 14. The filter assembly is driven by a hydraulic cylinder 11 to move the rack 12 back and forth. The meshing of the rack 12 and the transmission gear 14 drives the rotating shaft 13 to rotate, causing the arc-shaped filter groove 16 fixed on the shaft to oscillate at high frequency. This oscillation structure can expand the contact area between the material and the filter holes and reduce the clogging of the screen holes by using vibration, thereby significantly improving the filtration efficiency and avoiding material retention. The bottom of the filter box 1 is provided with a discharge port 27, and the two sides of the bottom of the filter box 1 are inclined towards the discharge port 27. This inclined structure uses gravity to guide the filtered material to automatically converge to the discharge port 27, avoiding the material from accumulating at the bottom of the box, ensuring smooth discharge and reducing the interference of residual material on subsequent filtration.

[0028] See Figure 1In the above embodiment, a control panel 10 is installed above the outer surface of the filter box 1, and the hydraulic cylinder 11 and the motor 5 are electrically connected to the control panel 10. The control panel 10 integrates a human-machine interface and a programmable controller, and forms a control closed loop with the hydraulic cylinder 11 and the motor 5 through electrical circuits. The operator can set parameters such as the speed of the motor 5, the swing frequency and stroke of the hydraulic cylinder 11 through the control panel 10 to achieve automated and precise control of the crushing and screening process.

[0029] See Figure 2 In the above embodiment, the lower interior of the storage bin 3 is inclined along the direction of the feeding cylinder 4. The lower interior of the storage bin 3 extends downwards towards the feeding cylinder 4 at an inclination angle of 15°-25° to form a guide slope. This slope is mirror polished (surface roughness Ra≤0.8μm) or coated with a Teflon anti-stick coating (thickness 50-80μm). Gravity guides the material to automatically slide down the slope to the inlet of the feeding cylinder 4, reducing material flow resistance and ensuring that the raw materials in the storage bin 3 can flow into the feeding cylinder 4 by gravity, thereby improving material utilization and reducing the frequency of manual intervention.

[0030] Example 2: To facilitate the cleaning of impurities, Example 2 is an improvement on Example 1. (See attached document.) Figure 1 , Figure 2 and Figure 5 A maintenance port 15 is provided on the lower outer surface of the filter box 1, and a sludge removal door 17 is installed on the lower outer surface of the arc-shaped filter tank 16. The maintenance port 15 allows maintenance personnel to directly access the bottom of the arc-shaped filter tank 16; the sludge removal door 17 on the lower outer surface of the filter tank can be quickly opened for workers to periodically clean impurities and clumps of material remaining during the filtration process. The two work together to achieve convenient maintenance. The implementation principle of this utility model is as follows: Before use, the operator first applies lubricating oil to all meshing transmission structures, such as the driving gear 20 and driven gear 21, the driving bevel gear 22 and driven bevel gear 19, and the rack 12 and transmission gear 14. Then, the foaming material to be filtered (including qualified powder and agglomerated powder) is put into the storage silo 3 and the motor 5 is started. The output shaft of the motor 5 drives the driving gear 20 to rotate. The external teeth of the driving gear 20 and driven gear 21 mesh to drive the rotating shaft 6 to rotate synchronously. The synchronous pulley 8 at the other end of the rotating shaft 6 drives the synchronous belt 9 to rotate towards the opposite direction. When the reciprocating screw 7 rotates, the spiral groove of the reciprocating screw 7 engages with the transmission pin of the slider 23, converting the rotational motion into linear reciprocating motion of the slider 23 along the screw axis. The slider 23 drives the sealing plate 25 to slide linearly back and forth in the feed cylinder 4 through the fixed rod 24. When the opening 26 of the sealing plate 25 is connected to the feed inlet of the feed cylinder 4, the powder in the storage bin 3 falls into the crushing area under the action of gravity. At this time, the rotating shaft 6 drives the driven bevel tooth 19 through the active bevel tooth 22 to make the two sets of crushing rollers rotate in opposite directions. The crushing rollers can crush the agglomerated powder. When the crushed powder falls into the arc-shaped filter trough 16, the reciprocating extension and retraction of the piston rod of the hydraulic cylinder 11 drives the rack 12 to make linear reciprocating motion along the horizontal guide rail. The rack 12 meshes with the external teeth of the transmission gear 14, causing the transmission gear 14 to rotate alternately in both directions at a set frequency (such as 70-90 times / minute). The transmission gear 14 drives the rotating shaft 13 to rotate synchronously, thereby causing the arc-shaped filter trough 16, which is fixed at both ends, to oscillate back and forth at ±30°-±45°. During the oscillation process, the powder is evenly spread along the curved surface of the filter trough under the combined action of centrifugal force and gravity. The qualified powder passes through the arc-shaped filter trough 16 and converges at the bottom of the filter box 1 (inclination angle 15°-20°) to the discharge port 27 for discharge. The clumps of incompletely crushed powder are intercepted, and the staff can clean them regularly through the bottom slag removal door 17.

[0031] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A foamed material filtration device, comprising a filter box (1), characterized in that: The top of the filter box (1) is fixed with a storage bin (3) via a support plate (2). The bottom of the storage bin (3) is connected to the filter box (1) via a feeding cylinder (4). Two sets of crushing rollers (18) are installed inside the feeding cylinder (4), and one end of each set of crushing rollers (18) is fixed with a driven bevel tooth (19). A motor (5), a rotating shaft (6), and a reciprocating screw (7) are installed on the inner side of the support plate (2). A slider (23) is slidably connected to the outer surface of the reciprocating screw (7). A sealing plate (25) is fixed to the top of the slider (23) via a fixing rod (24). An opening (26) is provided on the top of the sealing plate (25). An active bevel tooth (22) is fixed in the middle of the outer surface of the rotating shaft (6), and the active bevel tooth (22) meshes with the driven bevel tooth (19). A filter assembly is installed inside the filter box (1).

2. The foamed material filtration device according to claim 1, characterized in that: The filter assembly includes a hydraulic cylinder (11) installed on the outer surface of the filter box (1) and a rotating shaft (13) installed inside the filter box (1). An arc-shaped filter groove (16) is fixed on the outer surface of the rotating shaft (13). A transmission gear (14) is fixed at one end of the rotating shaft (13). A rack (12) is connected to the output end of the hydraulic cylinder (11), and the rack (12) meshes with the transmission gear (14).

3. The foamed material filtration device according to claim 2, characterized in that: A maintenance opening (15) is provided on the lower outer surface of the filter box (1), and a slag removal door (17) is installed on the lower outer surface of the arc-shaped filter tank (16).

4. The foamed material filtration device according to claim 1, characterized in that: The output end of the motor (5) is connected to a drive gear (20), and a driven gear (21) is installed on one side of the outer surface of the rotating shaft (6), and the drive gear (20) meshes with the driven gear (21).

5. The foamed material filtration device according to claim 1, characterized in that: The bottom of the filter box (1) is provided with a discharge port (27), and the bottom sides of the filter box (1) are inclined towards the discharge port (27).

6. The foamed material filtration device according to claim 2, characterized in that: The filter box (1) is equipped with a control panel (10) on its outer surface, and the hydraulic cylinder (11) and the motor (5) are electrically connected to the control panel (10).

7. The foamed material filtration device according to claim 1, characterized in that: Synchronous pulleys (8) are installed at one end of the reciprocating screw (7) and at one end of the rotating shaft (6), and the outer surfaces of the two sets of synchronous pulleys (8) are meshed with synchronous belts (9).

8. The foamed material filtration device according to claim 1, characterized in that: The feed cylinder (4) has movable openings on both sides, and a sealing rubber layer is provided on the inner side of the movable opening. The sealing plate (25) slides in conjunction with the movable opening.

9. The foamed material filtration device according to claim 1, characterized in that: The storage bin (3) is inclined along the direction of the feeding cylinder (4) at the bottom of the interior.

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