Device for preventing thickener from pressing rake

Abstract

The utility model discloses a device for preventing a thickener from pressing a rake, which relates to the technical field of solid-liquid separation of industrial materials and comprises a tank body, a discharge pipe arranged at the lower end of the tank body, a control valve mounted at the lower end of the discharge pipe, a fixing frame and a drain pipe mounted at the upper end of the tank body, and a vibrating unit, a power component and a conveying pipe mounted on the fixing frame. A main shaft is rotationally mounted on the fixing frame and connected with a power assembly, and a flushing unit and a rake frame are mounted on the part, located in the pond body, of the main shaft. The device has the beneficial effects that a second motor and a flexible connecting assembly drive a supporting rod and a fixing block to rotate at intervals, so that the fixing block and a sleeve collide to generate vibration, vibration force generated during collision is transmitted into slurry through the sleeve to vibrate the slurry, and the fluidity of the slurry is improved through the vibration force; the rake frame can better scrape slurry, the rake pressing phenomenon caused by slurry accumulation is effectively reduced, and the slurry treatment efficiency is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of solid-liquid separation of industrial materials, in particular to a device for preventing thickeners from crushing rakes. Background Art

[0002] In the fields of smelting, mineral processing, chemical industry, and environmental water treatment, thickeners are key equipment in the process and are widely used in solid-liquid separation of materials. Their operating status directly affects the stability of the overall system. The lower cone of the thickener is the thickened material area. If the material has high viscosity, high underflow concentration, or chemical crystallization, the underflow pipe will be blocked and rake pressure will occur.

[0003] After searching, the Chinese patent publication number CN212166609U discloses a high-efficiency pressurized thickener, which mainly adjusts the water outlet depth of the drainage pipe according to the different dispersion degrees of the materials to be separated from the solid and liquid through the drainage height adjustment structure, thereby reducing the pressure inside the thickener barrel, and clears the discharge pipe through the discharge pipe clearing structure to ensure normal discharge.

[0004] By comparing with the existing technologies in related fields, it can be seen that when the slurry is settled in the thickener, the settled lower material is in a piled state. The piled settled material blocks the rake frame, which makes the rake frame have great resistance when scraping the material, forming a rake pressure phenomenon in the tank body, which greatly slows down the efficiency of slurry treatment. Utility Model Content

[0005] The purpose of the utility model is to provide a device for preventing the thickener from pressing the rake in order to solve the above-mentioned problem.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] A device for preventing thickener from raking and pressing comprises a tank body, a discharge pipe is arranged at the lower end of the tank body, a control valve is installed at the lower end of the discharge pipe, a fixing frame and a drainage pipe are installed at the upper end of the tank body, a material vibration unit, a power assembly and a material delivery pipe are installed on the fixing frame, a main shaft is rotatably installed on the fixing frame, the main shaft is connected to the power assembly, a flushing unit and a rake frame are installed on the part of the main shaft located in the tank body, the control valve, the power assembly and an external controller are electrically connected, the control valve and the power assembly work by adopting the existing technology, the material delivery pipe is connected to an external material delivery device, the external material delivery device delivers the slurry after drug addition into the tank body through the material delivery pipe, the power assembly drives the rake frame to stir the slurry through the main shaft, so that the slurry enters the discharge pipe, is discharged through the discharge pipe and the control valve, and the clean water of the upper layer is discharged and collected through the drainage pipe, during the working process, the slurry is vibrated by the material vibration unit, the fluidity of the slurry is increased by the vibration, and the slurry is intermittently flushed by the flushing unit to increase the fluidity of the slurry, thereby effectively reducing the raking and pressing phenomenon of the slurry;

[0008] The shock material unit includes a driving component and a slide rail. The driving component and the slide rail are installed on a fixed frame. A gear ring is slidably installed on the slide rail. The gear ring is meshed and connected to the driving component. A mounting frame is installed on the gear ring. A hydraulic cylinder is installed on the mounting frame. A protective box is installed on the telescopic end of the hydraulic cylinder. A sleeve is installed on the lower surface of the protective box. A second motor is installed inside the protective box. The output shaft of the second motor is rotatably connected to the protective box. A flexible connection component is installed on the part of the output shaft of the second motor located in the sleeve. The flexible connection component is connected to a support rod. A fixed block is arranged on the support rod. The hydraulic cylinder, the second motor and an external controller are electrically connected. The driving component, the hydraulic cylinder and the second motor are electrically connected to each other. The motor and flexible connection assembly work using existing technologies. The second motor is a polarization motor. The hydraulic cylinder drives the sleeve into the slurry through a protective box. The second motor drives the support rod and the fixed block to rotate through the flexible connection assembly, causing the fixed block and the sleeve to collide and vibrate. The vibration force during the collision is transmitted to the slurry through the sleeve, thereby pushing the slurry and effectively reducing the raking phenomenon caused by slurry accumulation. At the same time, the driving assembly drives the sleeve to move through the gear ring, the mounting frame, and the hydraulic cylinder, so that the sleeve vibrates different positions of the slurry, effectively avoiding the accumulation and raking of slurry at different positions, and ensuring that the rake frame effectively scrapes the slurry.

[0009] Furthermore, the driving assembly on the fixed frame includes a first motor, the first motor is mounted on the fixed frame, a driving gear is mounted on the output shaft of the first motor, the driving gear is meshed and connected to the ring gear, the first motor and the external controller are electrically connected, and the ring gear is driven to reciprocate through the first motor and the driving gear.

[0010] Furthermore, the lower end of the sleeve is tapered, and the tapered design enables the sleeve to better enter the accumulated slurry.

[0011] Furthermore, the flushing unit includes a connecting valve and a water delivery chamber. The connecting valve is installed on a fixed frame. The connecting valve rotates and connects to the main shaft. The water delivery chamber is arranged in the main shaft and the rake frame. Water outlet holes are arranged on the main shaft and the rake frame. The water outlet holes are connected to the connecting valve through the water delivery chamber. A one-way valve is installed in the water outlet hole. The connecting valve is connected to an external water delivery device. The external delivery device delivers water into the pool body through the connecting valve, the water delivery chamber, the water outlet hole and the one-way valve. The one-way valve is used to prevent slurry in the pool body from entering the water outlet hole.

[0012] Furthermore, a spiral blade is provided on the portion of the main shaft located in the discharge pipe, and the material in the discharge pipe is pushed and transported by the spiral blade.

[0013] Furthermore, a diverter hood is installed on the lower surface of the fixing frame, and the diverter hood is connected to the feed pipe. The slurry in the feed pipe vertically enters the tank body through the diverter hood, thereby extending the flow and diffusion distance of the slurry in the tank body.

[0014] Furthermore, a bracket is installed at the end of the rake frame, and a roller is rotatably installed on the bracket, so that the end of the rake frame is supported by the bracket and the roller.

[0015] The beneficial effects compared with the prior art are as follows:

[0016] 1. The sleeve is inserted into the slurry through the hydraulic cylinder, and the position of the sleeve is adjusted through the first motor, the driving gear and the gear ring. The support rod and the fixed block are driven to rotate at intervals through the second motor and the flexible connection assembly, so that the fixed block and the sleeve collide and vibrate. The vibration force during the collision is transmitted to the slurry through the sleeve to vibrate the slurry. The fluidity of the slurry is increased by the vibration force, so that the rake frame can scrape the slurry better, effectively reducing the rake pressure phenomenon caused by slurry accumulation, and ensuring the slurry processing efficiency.

[0017] 2. During the working process, the external conveying device conveys water to the tank body and the discharge pipe at intervals through the connecting valve, water delivery cavity, water outlet and one-way valve, so as to flush the slurry near the rake frame and in the discharge pipe, increase the fluidity of the slurry, facilitate the rake frame to scrape the slurry, reduce the occurrence of rake pressure, and at the same time avoid the slurry from clogging the discharge pipe through water delivery and spiral blades, so as to ensure normal discharge efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of a device for preventing thickener rake pressure according to the utility model;

[0020] Figure 2 It is a schematic diagram of the internal structure of a device for preventing thickener rake pressure according to the utility model;

[0021] Figure 3 It is a partial cross-sectional structural schematic diagram of a device for preventing thickener rake pressure according to the utility model;

[0022] Figure 4 The utility model is a device for preventing thickener from pressing rakes. Figure 3 The enlarged structural diagram at A in the middle;

[0023] Figure 5 It is a schematic cross-sectional structure diagram of a device for preventing thickener rake pressure according to the utility model;

[0024] Figure 6 The utility model is a device for preventing thickener from pressing rakes. Figure 5 The enlarged structural diagram at B in the middle;

[0025] Figure 7 The utility model is a device for preventing thickener from pressing rakes. Figure 5 Enlarged structural diagram at point C in the middle.

[0026] The following are the descriptions of the reference numerals:

[0027] 1. Pool body; 2. Discharge pipe; 3. Vibrating material unit; 31. First motor; 32. Driving gear; 33. Gear ring; 34. Mounting frame; 35. Hydraulic cylinder; 36. Protective box; 37. Sleeve; 38. Flexible connection assembly; 39. Support rod; 310. Fixed block; 311. Slide rail; 312. Second motor; 4. Flushing unit; 41. Connecting valve; 42. Water delivery chamber; 43. One-way valve; 44. Water outlet; 5. Fixed frame; 6. Power assembly; 7. Feed pipe; 8. Main shaft; 9. Rake frame; 10. Spiral blade; 11. Diverter hood; 12. Bracket; 13. Roller; 14. Control valve; 15. Drain pipe. DETAILED DESCRIPTION

[0028] like Figure 1-Figure 7 As shown, a device for preventing thickener from being pressed by a rake comprises a tank body 1, a discharge pipe 2 is arranged at the lower end of the tank body 1, a control valve 14 is installed at the lower end of the discharge pipe 2, a fixing frame 5 and a drain pipe 15 are installed at the upper end of the tank body 1, a material shock unit 3, a power assembly 6 and a material delivery pipe 7 are installed on the fixing frame 5, a main shaft 8 is rotatably installed on the fixing frame 5, the main shaft 8 is connected to the power assembly 6, a flushing unit 4 and a rake frame 9 are installed on the part of the main shaft 8 located in the tank body 1, the control valve 14, the power assembly 6 are electrically connected to an external controller, the control valve 14 and the power assembly 6 work using the existing technology, and the material delivery pipe 7 is connected to an external material delivery device, such as Figure 1 , Figure 2 , Figure 5 As shown, the external feeding device conveys the slurry after the drug addition into the tank body 1 through the feeding pipe 7, and the slurry settles in the tank body 1. The power assembly 6 drives the rake frame 9 to rotate through the main shaft 8, and the rake frame 9 scrapes the slurry so that the slurry enters the discharge pipe 2. The settled slurry is discharged through the discharge pipe 2 and the control valve 14, and the clean water on the upper layer is discharged and collected through the drainage pipe 15. During the working process, the slurry is vibrated by the vibration unit 3 to increase the fluidity of the slurry through the vibration, and then the slurry is intermittently flushed by the flushing unit 4 to increase the fluidity of the slurry, thereby effectively reducing the slurry pressure rake phenomenon;

[0029] The shock material unit 3 includes a driving component and a slide rail 311. The driving component and the slide rail 311 are installed on the fixed frame 5. A gear ring 33 is slidably installed on the slide rail 311. The gear ring 33 is meshed and connected to the driving component. A mounting frame 34 is installed on the gear ring 33. A hydraulic cylinder 35 is installed on the mounting frame 34. A protective box 36 is installed on the telescopic end of the hydraulic cylinder 35. A sleeve 37 is installed on the lower surface of the protective box 36. A second motor 312 is installed inside the protective box 36. The output shaft of the second motor 312 is rotatably connected to the protective box 36. A flexible connection component 38 is installed on the part of the output shaft of the second motor 312 located in the sleeve 37. The flexible connection component 38 is connected to a support rod 39. A fixing block 310 is arranged on the support rod 39. The hydraulic cylinder 35, the second motor 312 and the external controller are electrically connected. The driving component, the hydraulic cylinder 35, the second motor 312 and the flexible connection component 38 work using the existing technology. The second motor 312 is a polarization motor, such as Figure 1-Figure 3 As shown, the hydraulic cylinder 35 drives the sleeve 37 into the slurry through the protective box 36, as shown in FIG. Figure 3 , Figure 4 As shown, the second motor 312 drives the support rod 39 and the fixed block 310 to rotate at intervals through the flexible connection component 38. During the rotation, the support rod 39 and the fixed block 310 are tilted by the centrifugal force, so that the fixed block 310 and the sleeve 37 collide and vibrate. The vibration force during the collision is transmitted to the slurry through the sleeve 37, thereby vibrating the slurry. The fluidity of the slurry is increased by the vibration force, so that the rake frame 9 can better scrape the slurry, effectively reducing the rake pressure phenomenon caused by the accumulation of slurry. At the same time, Figure 1-Figure 3 As shown, the driving assembly drives the mounting frame 34 to rotate through the gear ring 33, and the mounting frame 34 drives the sleeve 37 to move through the hydraulic cylinder 35 and the protective box 36, and adjusts the position of the sleeve 37 in the pool body 1, so that the sleeve 37 vibrates different positions of the slurry, effectively avoiding the accumulation and raking of the slurry at different positions, and ensuring the effective scraping of the slurry by the rake frame 9.

[0030] The driving assembly on the fixing frame 5 includes a first motor 31, which is mounted on the fixing frame 5. A driving gear 32 is mounted on the output shaft of the first motor 31, and the driving gear 32 is meshed and connected to a gear ring 33. The first motor 31 is electrically connected to an external controller, such as Figure 1 , Figure 2 , Figure 5 As shown, the first motor 31 drives the driving gear 32 to rotate, and the driving gear 32 drives the gear ring 33 to reciprocate, so as to adjust the position of the sleeve 37 entering the slurry.

[0031] The lower end of the sleeve 37 is tapered. Figure 3 As shown, the conical design enables the sleeve 37 to better enter the accumulated slurry.

[0032] The flushing unit 4 includes a connecting valve 41 and a water delivery chamber 42. The connecting valve 41 is mounted on the fixing frame 5. The connecting valve 41 is rotatably connected to the main shaft 8. The water delivery chamber 42 is arranged in the main shaft 8 and the rake frame 9. The main shaft 8 and the rake frame 9 are both provided with a water outlet 44. The water outlet 44 is connected to the connecting valve 41 through the water delivery chamber 42. A one-way valve 43 is installed in the water outlet 44. The connecting valve 41 is connected to an external water delivery device, such as Figure 1 , Figure 2 , Figure 5-Figure 7 As shown, the external conveying device conveys water to the water conveying cavity 42 through the connecting valve 41, and then sprays water into the tank body 1 and the discharge pipe 2 through the water outlet 44 and the one-way valve 43, thereby flushing the slurry in the tank body 1 and the discharge pipe 2, increasing the fluidity of the slurry, allowing the slurry to flow and discharge better, reducing the accumulation of slurry in the tank body 1 and the blockage in the discharge pipe 2, and preventing the slurry in the tank body 1 from entering the water outlet 44 through the one-way valve 43.

[0033] The portion of the main shaft 8 located in the discharge pipe 2 is provided with a spiral blade 10. Figure 2 , Figure 6 As shown, the main shaft 8 drives the spiral blade 10 to rotate, and the spiral blade 10 pushes and transports the material in the discharge pipe 2 to ensure smooth discharge of the material from the discharge pipe 2 and reduce the blockage of the discharge pipe 2 caused by the slurry.

[0034] A flow divider 11 is installed on the lower surface of the fixed frame 5, and the flow divider 11 is connected to the feed pipe 7. Figure 2 , Figure 5 As shown, the slurry in the feed pipe 7 vertically enters the tank body 1 through the diverter cover 11, so that the slurry diffuses from the middle position to the surroundings, extending the flow and diffusion distance of the slurry in the tank body 1, so that the slurry can settle better.

[0035] The end of the rake frame 9 is provided with a bracket 12, on which a roller 13 is rotatably mounted. Figure 7 As shown, the rake frame 9 drives the roller 13 to rotate through the bracket 12, and the roller 13 facilitates the rake frame 9 to rotate better. The bracket 12 and the roller 13 support the end of the rake frame 9 to improve the stability of the rake frame 9.

[0036] Working principle: Figure 1 As shown, the external feeding device conveys the slurry after the addition of the drug to the diverter cover 11 through the feeding pipe 7, as shown in FIG. Figure 2 , Figure 5 As shown, the slurry enters the tank body 1 vertically through the diverter cover 11, so that the slurry spreads from the middle position to the surroundings;

[0037] like Figure 1 , Figure 2 , Figure 5As shown, the power assembly 6 drives the rake frame 9 to rotate through the main shaft 8, and the rake frame 9 scrapes the slurry so that the slurry enters the discharge pipe 2. During the rotation of the rake frame 9, as shown in FIG. Figure 7 As shown, the rake frame 9 drives the roller 13 to rotate through the bracket 12, and the roller 13 facilitates the rake frame 9 to rotate better. The end of the rake frame 9 is supported by the bracket 12 and the roller 13. Figure 2 , Figure 6 As shown, the main shaft 8 drives the spiral blade 10 to rotate, and the spiral blade 10 pushes and transports the material in the discharge pipe 2, as shown in FIG. Figure 1 As shown, the settled material is discharged through the discharge pipe 2 and the control valve 14, and the clean water on the upper layer is discharged and collected through the drainage pipe 15;

[0038] While the rake frame 9 is scraping the settled material, Figure 1-Figure 3 As shown, the hydraulic cylinder 35 drives the sleeve 37 into the slurry through the protective box 36, as shown in FIG. Figure 3 , Figure 4 As shown, the second motor 312 drives the support rod 39 and the fixed block 310 to rotate at intervals through the flexible connection assembly 38. During the rotation process, the support rod 39 and the fixed block 310 are tilted by the centrifugal force, so that the fixed block 310 and the sleeve 37 collide and vibrate. The vibration force during the collision is transmitted to the slurry through the sleeve 37, thereby vibrating the slurry. The fluidity of the slurry is increased by the vibration force, so that the rake frame 9 can better scrape the slurry, reducing the pressure rake phenomenon caused by slurry accumulation;

[0039] like Figure 1 , Figure 2 , Figure 5 As shown, the driving gear 32 is driven to rotate by the first motor 31, and the mounting frame 34 is driven to rotate by the ring gear 33. The mounting frame 34 drives the sleeve 37 to move through the hydraulic cylinder 35 and the protective box 36, and the position of the sleeve 37 in the tank body 1 is adjusted, so that the sleeve 37 vibrates different positions of the slurry;

[0040] At the same time, if Figure 1 , Figure 2 , Figure 5-Figure 7 As shown, the external conveying device conveys water to the water conveying cavity 42 through the connecting valve 41, and then sprays water into the tank body 1 and the discharge pipe 2 through the water outlet 44 and the one-way valve 43, thereby flushing the slurry in the tank body 1 and the discharge pipe 2, increasing the fluidity of the slurry, allowing the slurry to flow and discharge better, reducing the pressure and discharge blockage caused by the settled materials, and ensuring normal discharge efficiency.

[0041] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A device for preventing thickener rake pressure, characterized in that: The invention comprises a tank body (1), wherein a discharge pipe (2) is arranged at the lower end of the tank body (1), a control valve (14) is installed at the lower end of the discharge pipe (2), a fixing frame (5) and a drainage pipe (15) are installed at the upper end of the tank body (1), a material vibration unit (3), a power assembly (6) and a material conveying pipe (7) are installed on the fixing frame (5), a main shaft (8) is rotatably installed on the fixing frame (5), the main shaft (8) is connected to the power assembly (6), and a flushing unit (4) and a rake frame (9) are installed on the part of the main shaft (8) located in the tank body (1); The shock material unit (3) comprises a driving assembly and a slide rail (311). The driving assembly and the slide rail (311) are mounted on the fixed frame (5). A gear ring (33) is slidably mounted on the slide rail (311). The gear ring (33) is meshedly connected to the driving assembly. A mounting frame (34) is mounted on the gear ring (33). A hydraulic cylinder (35) is mounted on the mounting frame (34). A protective box (36) is mounted on the telescopic end of the hydraulic cylinder (35). A sleeve (37) is installed on the lower surface of the protection box (36), and a second motor (312) is installed inside the protection box (36). The output shaft of the second motor (312) is rotatably connected to the protection box (36). A flexible connection component (38) is installed on the part of the output shaft of the second motor (312) located in the sleeve (37). The flexible connection component (38) is connected to a support rod (39), and a fixing block (310) is provided on the support rod (39).

2. A device for preventing thickener rake pressure according to claim 1, characterized in that: The driving assembly on the fixing frame (5) comprises a first motor (31), the first motor (31) being mounted on the fixing frame (5), a driving gear (32) being mounted on an output shaft of the first motor (31), the driving gear (32) being meshedly connected to the gear ring (33).

3. A device for preventing thickener rake pressure according to claim 1, characterized in that: The lower end of the sleeve (37) is tapered.

4. A device for preventing thickener rake pressure according to claim 1, characterized in that: The flushing unit (4) comprises a connecting valve (41) and a water delivery chamber (42); the connecting valve (41) is mounted on the fixing frame (5); the connecting valve (41) is rotatably connected to the main shaft (8); the water delivery chamber (42) is arranged in the main shaft (8) and the rake frame (9); the main shaft (8) and the rake frame (9) are both provided with water outlet holes (44); the water outlet holes (44) are connected to the connecting valve (41) through the water delivery chamber (42); and a one-way valve (43) is installed in the water outlet hole (44).

5. A device for preventing thickener rake pressure according to claim 1, characterized in that: A spiral blade (10) is provided on the portion of the main shaft (8) located inside the discharge pipe (2).

6. A device for preventing thickener rake pressure according to claim 4, characterized in that: A flow divider (11) is installed on the lower surface of the fixing frame (5), and the flow divider (11) is connected to the material conveying pipe (7).

7. A device for preventing thickener rake pressure according to claim 1, characterized in that: A bracket (12) is installed at the end of the rake frame (9), and a roller (13) is rotatably installed on the bracket (12).

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