Multi-stage filtering device for raw material production

Abstract

The invention discloses a multi-stage filtering device for raw material production, which comprises a shell, a multi-stage filtering assembly, a rotary driving part and a slag discharge port, the top of the shell is provided with a feed port, and the bottom of the shell is provided with a discharge port; the multi-stage filtering assembly comprises three filtering layers which are sequentially arranged at intervals from top to bottom, and the hole diameters of filtering holes of the filtering layers are gradually reduced from top to bottom; the rotary driving part is connected with the three filtering layers and is used for driving the filtering layers to rotate at a high speed; a residue discharge opening is formed in the shell above each filtering layer, and when the filtering layers rotate at a high speed, unfiltered residues on the filtering layers can be thrown into the residue discharge openings. The multi-stage filtering device for raw material production has the functions of multi-stage dynamic filtering, online continuous deslagging and self-cleaning so as to meet the requirements of an efficient, energy-saving and intelligent filtering technology.

Description

Technical Field

[0001] The present invention relates to the technical field of production filtration, in particular to a multi-stage filtration device for raw material production. Background Art

[0002] In modern industrial production, solid-liquid separation is a basic process for raw material refining. The current mainstream filtration devices have the following technical defects: 1. Limitations of single-stage filtration Traditional single-layer filtration structures struggle to achieve graded material processing, making it difficult to balance filtration accuracy and efficiency. For raw materials containing impurities of varying particle sizes, multiple devices often need to be connected in series, which not only takes up space but also increases energy consumption and maintenance costs.

[0003] 2. Continuous operation obstacles Existing filtration equipment generally suffers from inefficient slag removal. Common scraper or vibrating slag removal designs require downtime for cleaning, severely impacting production continuity. Even with rotary slag removal, some equipment still suffers from a residual residue of approximately 15-20%.

[0004] 3. Filter clogging problem Fibrous or sticky impurities in the material can easily clog the filter. Conventional backwashing or mechanical scraping methods have disadvantages such as incomplete clearing, high energy consumption, and potential damage to the filter structure.

[0005] These technical bottlenecks have severely restricted the effectiveness of filtration equipment in fields such as fine chemicals and food processing. The industry urgently needs to develop a new type of filtration device with multi-stage dynamic filtration, online continuous slag removal, and self-cleaning functions to meet modern industry's demand for efficient, energy-saving, and intelligent filtration technology. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the technical problem to be solved by the present invention is to provide a multi-stage filtration device for raw material production, which has multi-stage dynamic filtration, online continuous slag discharge and self-cleaning functions to meet the needs of high-efficiency, energy-saving and intelligent filtration technology.

[0007] In order to achieve the above object, the present invention is implemented through the following technical solution: a multi-stage filtration device for raw material production, comprising: A shell having a feed port at the top and a discharge port at the bottom; The multi-stage filter assembly comprises three filter layers spaced apart from each other from top to bottom, wherein the pore sizes of the filter holes of the filter layers decrease successively from top to bottom; a rotating driving member connected to the three filter layers and used to drive the filter layers to rotate at high speed; and A slag discharge port is provided on the shell above each filter layer. When the filter layer rotates at a high speed, the unfiltered residue on the filter layer can be thrown into the slag discharge port.

[0008] Furthermore, the filter layer includes a circular filter screen and a fixed ring sleeved outside the filter screen, the fixed ring is rotatably connected to the inner side wall of the shell, and the rotary drive component includes a first rotary power source, a first rotary shaft, three driving gears and three driven gears. An annular mounting cavity is provided in the side wall of the shell, the first rotary power source and the first rotary shaft are provided in the mounting cavity, the first rotary shaft is vertically provided in the mounting cavity, and is connected to the power output shaft of the first rotary power source and the first rotary shaft for driving the first rotary shaft to rotate, the three driving gears are sleeved and fixed on the first rotary shaft at intervals, the three driven gears are respectively sleeved on the three fixed rings, and mesh with the three driving gears in sequence.

[0009] Furthermore, the multi-stage filter assembly further includes a plurality of plucking ribs, and the plurality of plucking ribs are evenly spaced circumferentially on each filter screen and extend radially.

[0010] Furthermore, the side wall inclined surface of the shifting rib faces the rotation direction, and the inclined surface is inclined in the same direction as the rotation direction of the filter screen.

[0011] Furthermore, it also includes a slag discharge pipe, which is covered on the slag discharge port, is connected with the slag discharge port, and is arranged vertically downward. A slag outlet is provided at the bottom of the slag discharge pipe.

[0012] Furthermore, a slag pushing mechanism may be included, which is arranged in the slag discharge pipe and is used to assist in pushing the slag in the slag discharge pipe out of the slag outlet.

[0013] Furthermore, the slag pushing mechanism includes a second rotational power source, a second rotating shaft and a stirring rod. The second rotating shaft is vertically and rotatably arranged in the slag discharge pipe. The second rotational power source is used to drive the second rotating shaft to rotate. There are multiple stirring rods, and the multiple stirring rods are circumferentially spaced along the height direction of the second rotating shaft on the second rotating shaft.

[0014] Furthermore, the second rotating power source includes a plurality of spiral blades, and there are multiple spiral blades, which are circumferentially spaced apart and arranged on the second rotating shaft. During the second rotating shaft, all of the spiral blades pass through the slag discharge port in sequence, and the slag entering from the slag discharge port can collide with the spiral blade facing the slag discharge port and push the spiral blade to rotate.

[0015] Furthermore, it also includes an anti-blocking cleaning structure, which includes a plurality of reverse nozzles arranged circumferentially at intervals along the edge of the fixed ring and an inflation source connected to the reverse nozzle. The inflation source can provide gas to the nozzle, and the gas ejected from the reverse nozzle can be periodically sprayed on the bottom surface of the corresponding filter screen.

[0016] The cam is fixed to the airbag, and the cam is fixed to the airbag, and the cam is fixed to the airbag. The airbag is made of elastic material, and the airbag is arranged on the fixing ring and partially embedded in the hollow structure of the fixing ring. During the rotation of the eccentric wheel, the small end of the eccentric wheel can squeeze the airbag, and the one-way air inlet valve and the one-way air outlet valve are arranged at two ends of the airbag opposite to each other. The fixing ring is a hollow ring connected to the nozzle, the one-way air outlet valve is connected to the inner cavity of the fixing ring, and the one-way air inlet valve is located in the installation cavity.

[0017] Beneficial effects of the present invention: To use the aforementioned multi-stage filtration device for raw material production, the rotary drive mechanism is activated, driving the three filter layers in high-speed rotation. After raw material enters the feed inlet, it first falls to the top filter layer for filtration. The material that passes through falls to the second filter layer. The residue that does not pass through is flung around by centrifugal force until it encounters a discharge port and is discharged. Similarly, material entering the second and third layers is filtered in the same manner. Useful material after three filtration steps is discharged from the discharge port until all the material has been filtered.

[0018] The multi-stage filtration device used in the production of the above-mentioned raw materials adopts a multi-stage filtration design, which improves the filtration accuracy compared to single-layer filtration. In addition, this filtration device uses a method of driving the filter layer to rotate for filtration, which can greatly reduce the risk of the filter mesh being blocked. In addition, during the process, the slag is discharged online from the slag discharge port without the need to stop the machine for disassembly, thereby greatly improving the filtration efficiency and facilitating production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the specific embodiments. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0020] Figure 1 This is an external schematic diagram of a multi-stage filtration device for raw material production provided by one embodiment of the present invention; Figure 2 for Figure 1 The external schematic diagram of the multi-stage filtration device for raw material production shown in another angle; Figure 3 for Figure 1 Schematic diagram of removing the outer layer of the shell in a multi-stage filtration device for raw material production shown; Figure 4 for Figure 3 Schematic diagram at A; Figure 5 for Figure 1 Schematic diagram of the slag pushing mechanism in the multi-stage filtering device for raw material production shown; Figure 6 for Figure 1 Schematic diagram of a multi-stage filtration assembly and anti-blocking cleaning structure in a multi-stage filtration device for raw material production shown; Reference numerals: 100. Shell; 200. Multi-stage filter assembly; 210. Filter screen; 220. Fixed ring; 230. Toggle rib; 300. Rotary drive member; 310. First rotary power source; 320. First rotary shaft; 330. Driving gear; 340. Driven gear; 400. Slag discharge port; 500. Slag discharge pipe; 600. Slag pushing mechanism; 610. Second rotary power source; 620. Second rotary shaft; 630. Stirring rod; 700. Anti-blocking cleaning structure; 710. Reverse nozzle; 720. Inflation source; 721. Rotating disk; 722. Toggle rod; 723. Sliding rod; 724. Third rotary shaft; 725. Toggle disk; 726. Eccentric wheel; 727. Air bag; 728. One-way air inlet valve; 729. One-way air outlet valve. DETAILED DESCRIPTION

[0021] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] See Figures 1 to 6The present invention provides a multi-stage filtering device for raw material production, including a housing 100, a multi-stage filtering assembly 200, a rotary driving member 300 and a slag discharge port 400.

[0023] Specifically, the housing 100 has an inlet at the top and an outlet at the bottom. The multi-stage filter assembly 200 includes three filter layers spaced apart from each other from top to bottom, with the filter pores of each layer decreasing in size. A rotary drive 300 is connected to the three filter layers, driving them to rotate at high speed. A slag discharge port 400 is provided above each filter layer in the housing 100. During high-speed rotation, unfiltered residue from the filter layers is ejected into the discharge port 400.

[0024] During operation, the rotary drive 300 is activated, driving the three filter layers to rotate at high speed. When raw material enters the feed port, it first falls to the top filter for filtration. The material that passes through falls to the second filter layer. The residue that does not pass through is flung around by centrifugal force until it encounters the discharge port 400 and is discharged. Similarly, material entering the second and third layers is filtered in the same manner. After three filtration steps, the useful material is discharged from the discharge port until all the material has been filtered.

[0025] The multi-stage filtration device used for the above-mentioned raw material production adopts a multi-stage filtration design, which improves the filtration accuracy compared to single-layer filtration. In addition, this filtration device uses a method of driving the filter layer to rotate for filtration, which can greatly reduce the risk of the filter screen 210 being blocked. In addition, during the process, the slag is discharged online from the slag discharge port 400 without the need to stop the machine for disassembly, thereby greatly improving the filtration efficiency and facilitating production.

[0026] In this embodiment, the filter layer includes a circular filter screen 210 and a fixing ring 220 sleeved on the outside of the filter screen 210, the fixing ring 220 is rotatably connected to the inner side wall of the shell 100, and the rotary driving member 300 includes a first rotary power source 310, a first rotary shaft 320, three driving gears 330 and three driven gears 340. An annular mounting cavity is provided in the side wall of the shell 100, and the first rotary power source 310 and the first rotary shaft 320 are arranged in the mounting cavity. The first rotary shaft 320 is vertically arranged in the mounting cavity and is connected to the power output shaft of the first rotary power source 310 and the first rotary shaft 320 for driving the first rotary shaft 320 to rotate. The three driving gears 330 are sleeved and fixed on the first rotary shaft 320 at intervals, and the three driven gears 340 are respectively sleeved on the three fixing rings 220 and meshed with the three driving gears 330 in sequence.

[0027] During operation, the first rotary power source 310 drives the first rotating shaft 320, which, through the transmission of three driving gears 330 and three driven gears 340, drives the three-layer filter 210 to rotate and perform the filtration process. It should be noted that in this embodiment, a servo motor can be used as the first rotary power source 310. Of course, any other mechanism capable of driving the first rotating shaft 320 can also be used. The rotation speed is set as needed, that is, as long as it ensures smooth filtration.

[0028] With this design, the first rotational power source 310 avoids the filter cavity, which can prevent the first rotational power source 310 from affecting the filtration of the filter layer, thereby further improving the filtration effect.

[0029] As a preferred embodiment, the multi-stage filter assembly 200 further includes a plurality of paddle ribs 230, each of which is evenly spaced circumferentially on each filter screen 210 and extends radially. The paddle ribs 230 further drive the raw material to centrifugal rotation during the rotation of the filter screen 210.

[0030] Furthermore, in a specific implementation, the sidewall inclined surface of the rib 230 facing the rotation direction can be inclined in the same direction as the rotation direction of the filter screen 210, so as to facilitate the centrifugal rotation of the raw materials.

[0031] As another preferred embodiment, the device includes a slag discharge pipe 500. This pipe is installed over the slag discharge port and is connected to the slag discharge port 400. It is vertically downwardly positioned, and a slag outlet is provided at the bottom of the pipe 500. The slag discharge pipe 500 allows for orderly collection of slag, preventing slag from the slag discharge port 400 from flying around. In practice, multiple slag discharge pipes 500 may be provided, one for each slag discharge port 400. Alternatively, the slag discharge ports 400 may be arranged on the same vertical line, with only one slag discharge pipe 500 being sufficient.

[0032] As another more preferred embodiment, the device further includes a slag pushing mechanism 600 , which is disposed in the slag discharge pipe 500 and is used to assist in pushing the slag in the slag discharge pipe 500 out of the slag outlet.

[0033] Specifically, the slag pushing mechanism 600 includes a second rotating power source 610, a second rotating shaft 620 and a stirring rod 630. The second rotating shaft 620 is vertically and rotatably arranged in the slag discharge pipe 500. The second rotating power source 610 is used to drive the second rotating shaft 620 to rotate. There are multiple stirring rods 630, and the multiple stirring rods 630 are circumferentially spaced along the height direction of the second rotating shaft 620.

[0034] When necessary, the second rotary power source 610 is activated to drive the stirring rod 630 to stir the dregs to facilitate the discharge of the dregs.

[0035] In a specific implementation, the second rotation power source 610 can be any device that can drive the second rotation shaft 620 to rotate.

[0036] In this embodiment, the second rotary power source 610 includes a plurality of spiral blades, and there are multiple spiral blades, which are circumferentially spaced apart and arranged on the second rotating shaft 620. During the rotation of the second rotating shaft 620, all the spiral blades pass through the slag outlet in sequence. The slag entering from the slag outlet 400 can hit the spiral blade facing the slag outlet 400 and push the spiral blade to rotate.

[0037] During filtration, when the slag flies into the slag outlet, it drives the spiral blades to rotate, which in turn drives the rotation shaft. This method does not require an additional power source and can achieve online slag removal, which is both convenient for operation and improves work efficiency.

[0038] As another preferred embodiment, the device may further include an anti-clogging cleaning structure 700. The anti-clogging cleaning structure 700 includes reverse nozzles 710 spaced circumferentially along the edges of the plurality of fixing rings 220 and an air source 720 connected to the reverse nozzles 710. The air source 720 can provide air to the nozzles, and the air ejected from the reverse nozzles 710 can periodically be sprayed onto the bottom surface of the corresponding filter screen 210. When the nozzles are spraying air, the filter screen can be unblocked.

[0039] It should be noted that, in specific implementation, the angle setting of the nozzles should ensure that the gas ejected from all nozzles covers the entire surface of the filter 210 to avoid dead corners.

[0040] Specifically, the inflation source 720 includes a rotating disk 721, a toggle rod 722, a slide rod 723, a third rotating shaft 724, a toggle disk 725, an eccentric wheel 726, an air bag 727, a one-way air inlet valve 728 and a one-way air outlet valve 729. The rotating disk 721 is sleeved and fixed on the first rotating shaft 320. The toggle rod 722 is set on the rotating disk 721 and extends radially along the rotating disk 721. The slide rod 723 is set on the toggle rod 722. The third rotating shaft 724 The eccentric wheel 726 is fixed on the third rotating shaft 724.

[0041] The airbag 727 is made of elastic material. The airbag 727 is arranged on the fixed ring 220 and partially embedded in the hollow structure of the fixed ring 220. During the rotation of the eccentric wheel 726, the small end of the eccentric wheel 726 can squeeze the airbag 727. The one-way air inlet valve 728 and the one-way air outlet valve 729 are relatively arranged at the two ends of the airbag 727. The fixed ring 220 is a hollow ring connected to the nozzle. The one-way air outlet valve 729 is connected to the inner cavity of the fixed ring 220, and the one-way air inlet valve 728 is located in the installation cavity.

[0042] During use, the first rotating shaft 320 rotates, driving the rotating disk 721, the toggle rod 722, and the slide bar 723 to rotate. With each rotation, the slide bar 723 sequentially inserts into a slot. During entry or exit, the toggle disk 725 is rotated by a certain angle. With each rotation of the toggle disk 725, the small end of the eccentric wheel 726 squeezes the airbag 727. Gas passes through the one-way outlet valve 729, enters the fixed ring 220, and is finally ejected from the nozzle. When the eccentric wheel 726 leaves the airbag 727, the airbag 727 recovers and absorbs air through its own elastic recovery. The gas then enters the airbag 727 through the one-way inlet valve 728, ready for the next use.

[0043] This gap dredging method not only plays a dredging role, but also ensures the filtration process and improves the filtration efficiency. In addition, this method does not require an additional power source, which can further save costs.

[0044] The use of the multi-stage filtration device for the production of the above raw materials: The multi-stage filtration device used for the above-mentioned raw material production adopts a multi-stage filtration design, which improves the filtration accuracy compared to single-layer filtration. In addition, this filtration device uses a method of driving the filter layer to rotate for filtration, which can greatly reduce the risk of the filter screen 210 being blocked. In addition, during the process, the slag is discharged online from the slag discharge port 400 without the need to stop the machine for disassembly, thereby greatly improving the filtration efficiency and facilitating production.

[0045] In addition, the slag pushing mechanism 600 can assist in discharging the slag from the slag discharge pipe 500, and the anti-blocking cleaning structure 700 can preferably prevent the filter screen 210 from being blocked by jet backblowing, thereby greatly improving the filtering efficiency.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A multi-stage filtration device for raw material production, characterized in that: include: A shell having a feed port at the top and a discharge port at the bottom; The multi-stage filter assembly comprises three filter layers spaced apart from each other from top to bottom, wherein the pore sizes of the filter holes of the filter layers decrease successively from top to bottom; A rotary driving member connected to the three filter layers and used to drive the filter layers to rotate at high speed; and A slag discharge port is provided on the shell above each filter layer. When the filter layer rotates at a high speed, the unfiltered residue on the filter layer can be thrown into the slag discharge port.

2. The multi-stage filtration device for raw material production according to claim 1, characterized in that: The filter layer includes a circular filter screen and a fixed ring sleeved outside the filter screen, the fixed ring is rotatably connected to the inner side wall of the shell, the rotary drive component includes a first rotary power source, a first rotary shaft, three driving gears and three driven gears, and an annular mounting cavity is provided in the side wall of the shell, the first rotary power source and the first rotary shaft are arranged in the mounting cavity, the first rotary shaft is vertically arranged in the mounting cavity, and is connected to the power output shaft of the first rotary power source and the first rotary shaft for driving the first rotary shaft to rotate, the three driving gears are sleeved and fixed on the first rotary shaft at intervals, the three driven gears are respectively sleeved on the three fixed rings, and mesh with the three driving gears in sequence.

3. The multi-stage filtration device for raw material production according to claim 2, characterized in that: The multi-stage filter assembly further includes a plurality of plucking ribs, and the plurality of plucking ribs are evenly spaced circumferentially on each filter screen and extend radially.

4. The multi-stage filtration device for raw material production according to claim 3, characterized in that: The side wall inclined surface of the shifting rib faces the rotation direction, and the inclined surface is inclined in the same direction as the rotation direction of the filter screen.

5. The multi-stage filtration device for raw material production according to claim 2, characterized in that: It also includes a slag discharge pipe, which is covered on the slag discharge port and communicated with the slag discharge port and is arranged vertically downward. A slag outlet is provided at the bottom of the slag discharge pipe.

6. The multi-stage filtration device for raw material production according to claim 5, characterized in that: The utility model may further include a slag pushing mechanism, which is arranged in the slag discharge pipe and is used to assist in pushing the slag in the slag discharge pipe out of the slag outlet.

7. The multi-stage filtration device for raw material production according to claim 6, characterized in that: The slag pushing mechanism includes a second rotating power source, a second rotating shaft and a stirring rod. The second rotating shaft is vertically and rotatably arranged in the slag discharge pipe. The second rotating power source is used to drive the second rotating shaft to rotate. There are multiple stirring rods, and the multiple stirring rods are circumferentially spaced along the height direction of the second rotating shaft on the second rotating shaft.

8. The multi-stage filtration device for raw material production according to claim 7, characterized in that: The second rotating power source includes a plurality of spiral blades. There are multiple spiral blades, and the plurality of spiral blades are circumferentially spaced apart and arranged on the second rotating shaft. During the second rotating shaft, all the spiral blades pass through the slag discharge port in sequence. The slag entering from the slag discharge port can collide with the spiral blade facing the slag discharge port and push the spiral blade to rotate.

9. The multi-stage filtration device for raw material production according to claim 2, characterized in that: It also includes an anti-blocking cleaning structure, which includes a plurality of reverse nozzles arranged circumferentially at intervals along the edge of the fixed ring and an inflation source connected to the reverse nozzle. The inflation source can provide gas to the nozzle, and the gas ejected from the reverse nozzle can be periodically sprayed on the bottom surface of the corresponding filter screen.

10. The multi-stage filtration device for raw material production according to claim 9, characterized in that: The inflation source includes a rotating disk, a toggle lever, a sliding rod, a third rotating shaft, a toggle disk, an eccentric wheel, an airbag, a one-way air inlet valve and a one-way air outlet valve, the rotating disk is sleeved and fixed on the first rotating shaft, the toggle lever is arranged on the rotating disk and extends radially along the rotating disk, the sliding rod is arranged on the toggle lever, the third rotating shaft can rotate in the mounting cavity and is arranged parallel to the first rotating shaft of the mounting cavity, the toggle disk is sleeved and fixed on the third rotating shaft, the toggle disk is circumferentially spaced apart with a plurality of sliding grooves extending radially and penetrating up and down, and during the rotation of the first rotating shaft, the sliding rod can be sequentially inserted into and withdrawn from the sliding grooves, driving the toggle disk to rotate one side during the entry and exit and withdrawal processes, and the eccentric wheel is sleeved and fixed on the third rotating shaft; The airbag is made of elastic material, and the airbag is arranged on the fixing ring and partially embedded in the hollow structure of the fixing ring. During the rotation of the eccentric wheel, the small end of the eccentric wheel can squeeze the airbag, and the one-way air inlet valve and the one-way air outlet valve are arranged at two ends of the airbag opposite to each other. The fixing ring is a hollow ring connected to the nozzle, the one-way air outlet valve is connected to the inner cavity of the fixing ring, and the one-way air inlet valve is located in the installation cavity.

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