Vacuum filter with filter pressing function

Abstract

The vacuum filter with the filter pressing function comprises a frame body, fixing blocks are fixedly connected to the two ends of the outer side of the frame body, a first motor is fixedly connected to one end of the outer side of each fixing block, the output end of each first motor penetrates through the corresponding fixing block to be inwards provided with a conveying roller, and a conveying belt is installed on the conveying rollers; the vacuum suction pipe and the suction opening are mounted in the middle of the conveying belt, so that air on the conveying belt can be sucked, flowing of the air on the conveying belt is accelerated, water in materials is separated, rapid filtering operation is achieved, meanwhile, the pressure on a filter cake can be gradually increased in cooperation with the adjustable filter pressing assembly, and the filtering efficiency is improved. After being ground, a filter cake becomes more compact and compact, most of pores among filter cake particles are filled, capillary water in the filter cake can be greatly reduced, meanwhile, water extruded to the surface layer of the filter cake is pumped away by a vacuum system, the part of water is prevented from returning to the interior of the filter cake after pressure is eliminated, and the filtering effect of the whole vacuum filter is improved.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum filtration, in particular to a vacuum filter with a filter pressing function. Background Art

[0002] Belt filter, also known as chain belt filter, is a type of continuous filter. It is a new type of high-efficiency dehydration equipment. Its operation is similar to that of belt conveyor. Slurry is dehydrated during transportation, solid and liquid are separated, and residue is filtered. There are two types of structures: pressurized and decompressed. The former is more commonly used, and is divided into filter press and press. The latter is a vacuum filter. The solid-liquid mixture enters the vacuum belt filter through the feed port and is evenly distributed on the belt filter medium. The belt filter medium is generally composed of a mesh belt or a rubber belt, which plays a supporting and filtering role. In the initial filtration stage, solid particles are left on the filter medium, while the liquid part passes through the filter medium into the liquid collection tank below. Generally, the water in the slurry is divided into strongly bound water, weakly bound water, capillary water and gravity water. The belt vacuum filter can only extract the gravity water through the vacuum negative pressure, and the pores in the filter cake after filtration are very abundant. The capillary water adsorbed in these pores cannot be separated by vacuum suction. Especially when the material particle size is in the range of 0.005-0.1mm, there is a strong capillary effect between the material particles of the filter cake. According to the test, in some cases, the capillary water accounts for 60% or even higher of the water content of the filter cake; In addition, when the moisture content in the filter cake of some materials is reduced to a certain level, cracks will form, and a large amount of air will enter the vacuum system through these gaps, reducing the negative pressure of the system, causing the dehydration effect of the belt vacuum filter to decrease, making it difficult for the belt vacuum filter to ensure a good dehydration effect and unable to meet the moisture content requirements. Summary of the invention

[0003] 1. Technical issues to be resolved In view of the deficiencies of the prior art, the present invention provides a vacuum filter with a filter pressing function, which solves the problem in the prior art that the pores in the filter cake after filtration are very abundant and the capillary water adsorbed in these pores cannot be separated by vacuum suction.

[0004] (II) Technical solution To achieve the above purpose, the present invention is implemented through the following technical solutions: a vacuum filter with a filter pressing function, comprising a frame, the two outer ends of the frame are fixedly connected with fixed blocks, one outer end of the fixed block is fixedly connected with a motor, the output end of the motor passes through the fixed block and is provided with a conveying roller inwardly, a conveyor belt is installed on the conveying roller, the two inner ends of the frame are fixedly connected with a connecting frame, and the outer end of the connecting frame is fixedly connected with a mounting block; The upper end of the mounting block is fixedly connected to a column, the top of the column is fixedly connected to a top plate, the upper end of the top plate is fixedly connected to a mounting frame, the inner end of the mounting frame is fixedly connected to a second motor, and the output end of the second motor is fixedly connected to a screw; The outer end of the screw rod is threadedly connected with a screw sleeve, the screw sleeve passes through the top plate and is fixedly connected to a movable frame downward, and the lower ends of the movable frame are fixedly connected with a plurality of group positioning plates, and the interior of the positioning plate is rotatably connected with a pressure roller.

[0005] Preferably: the movable frame is movably connected to the column, a collection box is provided at the lateral port of the frame body, a plurality of mounting bases are fixedly connected to the upper end of the connecting frame, a vacuum exhaust pipe is fixedly connected inside the mounting base, and an exhaust port is opened above the vacuum exhaust pipe.

[0006] Preferably, the other end of the frame is fixedly connected to a connecting plate, and the rotating frame is fixed to both ends above the connecting plate.

[0007] Preferably, the outer end of the rotating frame is fixedly connected to the motor three, the output end of the motor three is fixedly connected to the gear one, and the interior of the rotating frame is rotatably connected to the rotating shaft.

[0008] Preferably, one outer end of the rotating shaft is fixedly connected with gear 2, the gear 1 is meshed with gear 2, a fixing plate is fixedly connected to the rotating shaft, and the other end of the fixing plate is fixedly connected with a scraper.

[0009] Preferably, the other end of the rotating shaft passes through the rotating frame and is fixedly connected to a gear three outwardly, and a slot is formed at the outer end of the rotating frame, and a sliding rod is fixedly connected inside the slot.

[0010] Preferably: the slide bar is slidably connected with gear four, the gear three and gear four correspond to each other, a spring is sleeved on the slide bar, one end of the spring is fixedly connected with gear four, and the other end of the spring is fixedly connected to the inner end of the slot.

[0011] Preferably, a water outlet plate is fixedly connected to the middle portion of the inner side of the frame, a water inlet pipe is penetrated through one end of the outer side of the water outlet plate, and a plurality of water outlet heads are penetrated through the lower side of the water outlet plate.

[0012] Preferably, a bracket is fixedly connected to the connecting plate and the bottom of the collecting box.

[0013] Working principle: When in use, the staff will lay the material on the conveyor belt 104, start the motor 101 to drive the internal conveying roller to rotate, so as to drive the internal multiple groups of driven rollers to rotate, ensuring that the conveyor belt 104 drives the material to move. At the same time, the vacuum exhaust pipe 402 works. When the material passes through the exhaust port 401, the exhaust port 401 sucks the air on the conveyor belt 104, accelerates the flow of air on the conveyor belt 104, and separates the moisture inside the material to achieve rapid filtration. Then start the motor 2 301 to drive the screw 302 to rotate. Under the action of the threaded connection, the screw sleeve 303 can drive the movable frame 304 to move downward, so as to adjust the position of the multiple groups of pressure rollers 306 below. The pressure roller 306 can filter the filter cake after preliminary filtration, and the three groups of pressure rollers 306 are inclined in design, which can gradually increase the pressure on the filter cake. After being pressed, the filter cake becomes denser and tighter, and most of the pores between the filter cake particles are filled, which can greatly reduce the capillary water in the filter cake. At the same time, the moisture squeezed to the surface of the filter cake is sucked away by the vacuum system, so as to avoid this part of the moisture returning to the inside of the filter cake after the pressure is eliminated; the cracks formed by the cracking of the front filter cake are filled by the deformation of the filter cake during rolling, and the dense filter cake formed by rolling can prevent the cracking of the filter cake during subsequent filtration, so as to prevent the leakage of vacuum during dehydration of the belt vacuum filter, so as to ensure that its dehydration effect is maximized, and the material after pressure filtration can enter the inside of the collecting box 6 to complete the collection; When the conveyor belt 104 needs to be cleaned, pull gear four 704 outward to disengage it from gear three 7, and start motor three 501 to drive gear one 506 to rotate, which can drive gear two 507 and shaft 505 to rotate under the action of meshing, and the transmission of shaft 505 can drive the fixed plate 504 and the scraper 503 to adjust the angle so that they come into contact with the surface of the conveyor belt 104, and the scraper 503 can clean the material attached to the surface of the conveyor belt 104 to improve the filtering effect of the entire device.

[0014] (III) Beneficial effects The present invention provides a vacuum filter with a filter pressing function, which has the following beneficial effects: 1. The present invention can inhale the air on the conveyor belt by installing a vacuum suction pipe and a suction port in the middle of the conveyor belt, accelerate the flow of air on the conveyor belt, and separate the moisture inside the material, so as to achieve rapid filtering operation. At the same time, with the adjustable filter pressing component, the pressure on the filter cake can be gradually increased. After being pressed, the filter cake becomes denser and tighter, and most of the pores between the filter cake particles are filled, which can greatly reduce the capillary water in the filter cake. At the same time, the moisture squeezed to the surface of the filter cake is sucked away by the vacuum system, so as to avoid this part of the moisture returning to the inside of the filter cake after the pressure is eliminated, thereby improving the filtering effect of the entire vacuum filter; 2. The present invention can mobilize the internal rotating shaft to rotate by arranging a driving assembly and a gear assembly at one end of the conveyor belt, thereby ensuring that the scraper can contact the surface of the conveyor belt. The scraper can clean the materials attached to the conveyor belt to prevent the subsequent filtering operation from being affected, thereby improving the filtering efficiency; 3. The present invention can clean the conveyor belt by installing a nozzle assembly inside the frame, and can improve the cleaning effect of the entire filter assembly in conjunction with the scraper assembly, thereby ensuring the overall cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall schematic diagram of the present invention; Figure 2 It is a front view of the present invention; Figure 3 It is a side view of the present invention.

[0016] Figure 4 For the present invention Figure 3 The structural diagram of A in the figure; Figure 5 It is a schematic diagram of the cleaning component of the present invention.

[0017] Among them, 1. frame; 101. motor one; 102. fixed block; 103. connecting frame; 104. conveyor belt; 105. bracket; 2. mounting block; 201. top plate; 202. column; 3. mounting frame; 301. motor two; 302. screw; 303. screw sleeve; 304. movable frame; 305. positioning plate; 306. pressure roller; 4. mounting base; 401. exhaust port; 402. vacuum exhaust pipe; 5. connecting plate; 501. motor three; 502. rotating frame; 503. scraper; 504. fixed plate; 505. rotating shaft; 506. gear one; 507. gear two; 6. collecting box; 7. gear three; 701. slot; 702. slide rod; 703. spring; 704. gear four; 8. water outlet plate; 801. water outlet head; 802. water inlet pipe. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Example: like Figure 1-5As shown, the embodiment of the present invention provides a vacuum filter with a filter pressing function, including a frame 1, fixed blocks 102 are fixedly connected to the two outer ends of the frame 1, a motor 101 is fixedly connected to one outer end of the fixed block 102, the output end of the motor 101 passes through the fixed block 102 and is provided with a conveying roller inwardly, a conveying belt 104 is installed on the conveying roller, a connecting frame 103 is fixedly connected to the two inner ends of the frame 1, the outer end of the connecting frame 103 is fixedly connected to the mounting block 2, and multiple groups of conveying rollers are arranged inside the frame 1, which can complete the conveying operation of the conveying belt 104 in cooperation with the conveying rollers at the output end of the motor 101, thereby realizing stable conveying of materials; The upper end of the mounting block 2 is fixedly connected with a column 202, the top of the column 202 is fixedly connected with a top plate 201, the upper end of the top plate 201 is fixedly connected with a mounting frame 3, the inner end of the mounting frame 3 is fixedly connected with a motor 2 301, the output end of the motor 2 301 is fixedly connected with a screw rod 302, the outer end of the screw rod 302 is threadedly connected with a screw sleeve 303, the screw sleeve 303 penetrates the top plate 201 and is fixedly connected downwardly with a movable frame 304, the lower ends of the movable frame 304 are fixedly connected with a plurality of positioning plates 305, the internal rotation of the positioning plates 305 is connected with a pressure roller 306, the motor 2 301 is started to drive the screw rod 302 to rotate, and under the action of the threaded connection, the screw sleeve 303 can drive the movable frame 304 to move downward, thereby The positions of the multiple groups of pressing rollers 306 below can be adjusted so that the pressing rollers 306 can filter the filter cake after preliminary filtration, and the three groups of pressing rollers 306 are inclined, which can gradually increase the pressure on the filter cake. After being pressed, the filter cake becomes denser and tighter, and most of the pores between the filter cake particles are filled, which can greatly reduce the capillary water in the filter cake. At the same time, the water squeezed to the surface of the filter cake is sucked away by the vacuum system to avoid this part of the water returning to the inside of the filter cake after the pressure is eliminated; the cracks formed by the cracking of the front filter cake are filled by the deformation of the filter cake during rolling, and the dense filter cake formed by rolling can prevent the cracking of the filter cake during subsequent filtration, so as to prevent the leakage of vacuum during dehydration of the belt vacuum filter, and ensure that its dehydration effect is maximized; The movable frame 304 is movably connected to the column 202, and a collection box 6 is provided at the transverse port of the frame body 1. The upper end of the connecting frame 103 is fixedly connected to a plurality of mounting bases 4, and the interior of the mounting base 4 is fixedly connected to a vacuum exhaust pipe 402. An exhaust port 401 is provided above the vacuum exhaust pipe 402. When the vacuum exhaust pipe 402 is in operation, when the material passes through the exhaust port 401, the exhaust port 401 inhales the air on the conveyor belt 104, accelerates the flow of air on the conveyor belt 104, and separates the moisture inside the material, thereby achieving a rapid filtering effect. The other end of the frame 1 is fixedly connected to a connecting plate 5, and the two ends above the connecting plate 5 are fixed to a rotating frame 502. The outer end of the rotating frame 502 is fixedly connected to a motor 3 501, and the output end of the motor 3 501 is fixedly connected to a gear 1 506. The inner rotation of the rotating frame 502 is connected to a rotating shaft 505, and the outer end of the rotating shaft 505 is fixedly connected to a gear 2 507. The gear 1 506 meshes with the gear 2 507. The rotating shaft 505 is fixedly connected to a fixing plate 504, and the other end of the fixing plate 504 is fixedly connected to The scraper 503 pulls the gear four 704 outward to disengage it from the gear three 7, and the motor three 501 is started to drive the gear one 506 to rotate, which can drive the gear two 507 and the rotating shaft 505 to rotate under the action of meshing, and the fixed plate 504 and the scraper 503 can be driven to adjust the angle through the transmission of the rotating shaft 505, so that they can contact the surface of the conveyor belt 104, and the materials attached to the surface of the conveyor belt 104 can be cleaned by the scraper 503 to improve the filtering effect of the whole device; The other end of the rotating shaft 505 passes through the rotating frame 502 and is fixedly connected to the gear three 7 outwardly. The outer end of the rotating frame 502 is provided with a slot 701, and the interior of the slot 701 is fixedly connected to a sliding rod 702, and a gear four 704 is slidably connected to the sliding rod 702. The gear three 7 and the gear four 704 correspond to each other. A spring 703 is sleeved on the sliding rod 702, one end of the spring 703 is fixedly connected to the gear four 704, and the other end of the spring 703 is fixedly connected to the inner end of the slot 701. The gear four 704 is a fixed structure and does not rotate. When in use, it only serves as a limiting component. Under the action of the spring 703, the gear four 704 can slide on the sliding rod 702, so as to adjust its position. After the scraper 503 completes the rotation adjustment, the gear four 704 is released to automatically reset and mesh with the gear three 7, and during the resetting process, the meshing angle of the gear three 7 is matched with the gear four 704 to ensure the stability of the scraper 503 when in use and improve its cleaning effect. A water outlet plate 8 is fixedly connected to the middle part of the inner side of the frame 1, a water inlet pipe 802 is penetrated at one end of the outer side of the water outlet plate 8, a plurality of water outlet heads 801 are penetrated below the water outlet plate 8, a bracket 105 is fixedly connected to the bottom of the connecting plate 5 and the collecting box 6, the water inlet pipe 802 is connected to an external water storage device, and the water pump is started to deliver water into the interior of the water outlet plate 8 through the water inlet pipe 802, and sprayed out through the water outlet head 801, thereby completing the cleaning of the conveyor belt 104, and cooperating with the scraper 503 can improve the cleaning effect of the filter assembly.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum filter having a filter pressing function, comprising a frame (1), characterized in that: The two outer ends of the frame body (1) are fixedly connected to fixed blocks (102), one outer end of the fixed block (102) is fixedly connected to a motor 1 (101), the output end of the motor 1 (101) passes through the fixed block (102) and is provided with a conveying roller inwardly, a conveying belt (104) is installed on the conveying roller, the two inner ends of the frame body (1) are fixedly connected to a connecting frame (103), and the outer end of the connecting frame (103) is fixedly connected to a mounting block (2); The upper end of the mounting block (2) is fixedly connected to a column (202), the top of the column (202) is fixedly connected to a top plate (201), the upper end of the top plate (201) is fixedly connected to a mounting frame (3), the inner end of the mounting frame (3) is fixedly connected to a second motor (301), and the output end of the second motor (301) is fixedly connected to a screw rod (302); The outer end of the screw rod (302) is threadedly connected to a screw sleeve (303), the screw sleeve (303) passes through the top plate (201) and is fixedly connected downward to a movable frame (304), the lower ends of the movable frame (304) are fixedly connected to a plurality of group positioning plates (305), and the interior of the positioning plate (305) is rotatably connected to a pressure roller (306).

2. A vacuum filter with filter pressing function according to claim 1, characterized in that: The movable frame (304) is movably connected to the column (202); a collection box (6) is provided at the lateral port of the frame body (1); a plurality of mounting bases (4) are fixedly connected to the upper end of the connecting frame (103); a vacuum exhaust pipe (402) is fixedly connected inside the mounting base (4); and an exhaust port (401) is provided above the vacuum exhaust pipe (402).

3. The vacuum filter with filter pressing function according to claim 1, characterized in that: The other end of the frame body (1) is fixedly connected to a connecting plate (5), and the rotating frame (502) is fixed at both ends above the connecting plate (5).

4. A vacuum filter with filter pressing function according to claim 3, characterized in that: The outer end of the rotating frame (502) is fixedly connected to the motor three (501), the output end of the motor three (501) is fixedly connected to the gear one (506), and the interior of the rotating frame (502) is rotatably connected to the rotating shaft (505).

5. A vacuum filter with filter pressing function according to claim 4, characterized in that: One end of the outer side of the rotating shaft (505) is fixedly connected to a second gear (507), the first gear (506) is meshed with the second gear (507), a fixing plate (504) is fixedly connected to the rotating shaft (505), and the other end of the fixing plate (504) is fixedly connected to a scraper (503).

6. The vacuum filter with filter pressing function according to claim 4, characterized in that: The other end of the rotating shaft (505) passes through the rotating frame (502) and is fixedly connected to a gear three (7) outwardly. A slot (701) is formed at the outer end of the rotating frame (502), and a sliding rod (702) is fixedly connected inside the slot (701).

7. A vacuum filter with filter pressing function according to claim 6, characterized in that: The slide bar (702) is slidably connected to a gear four (704), the gear three (7) and the gear four (704) correspond to each other, a spring (703) is sleeved on the slide bar (702), one end of the spring (703) is fixedly connected to the gear four (704), and the other end of the spring (703) is fixedly connected to the inner end of the slot (701).

8. The vacuum filter with filter pressing function according to claim 1, characterized in that: A water outlet plate (8) is fixedly connected to the middle portion of the inner side of the frame (1), a water inlet pipe (802) is provided through one end of the outer side of the water outlet plate (8), and a plurality of water outlet heads (801) are provided through the lower side of the water outlet plate (8).

9. A vacuum filter with filter pressing function according to claim 2 or 3, characterized in that: The connection plate (5) and the bottom of the collection box (6) are fixedly connected with a bracket (105).

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