Filtering device for preparing high-activity calcium hydroxide

Abstract

The utility model discloses a filtering device for preparing high-activity calcium hydroxide, which comprises an outer barrel body, a partition plate is arranged in the outer barrel body, the partition plate divides the inner part of the outer barrel body into an upper chamber and a lower chamber, a liquid outlet is arranged on the upper chamber, a liquid inlet is arranged on the lower chamber, and the upper chamber and the lower chamber are communicated with each other. A plurality of cylindrical filter cartridges are arranged above the partition plate, an annular flange is arranged at the bottom of the partition plate, liquid inlet holes are formed in the periphery of the outer side of the annular flange, liquid drainage holes are formed in the bottom of the annular flange, and the bottoms of the cylindrical filter cartridges extend into the annular flange and are communicated with the liquid inlet holes and the liquid drainage holes. The bottom of the liquid discharging hole is connected with a liquid discharging pipe which penetrates through the lower cavity and extends outwards. According to the scheme, through reverse cleaning operation, the filtering mechanism can be quickly cleaned, and the cleaning time of the filtering mechanism is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of calcium hydroxide preparation, and specifically relates to a filtering device for preparing high-activity calcium hydroxide. Background Art

[0002] High-activity calcium hydroxide is also called high specific surface area calcium hydroxide. High specific surface area calcium hydroxide has the characteristics of being porous, highly active, well dispersed, and highly utilized. Its specific surface area is 2-3 times that of ordinary calcium hydroxide and is widely used in the flue gas desulfurization industry. When high-activity calcium hydroxide is made into slurry, it needs to be filtered to improve its purity.

[0003] Chinese patent application number 2023203019644 discloses a filtering device for preparing highly active nano-calcium hydroxide, comprising a filter barrel, a barrel cover is installed on the upper part of the filter barrel, a feed pipe is fixedly connected to the upper part of the barrel cover, and a plurality of feed branches are fixedly connected to the lower end of the feed pipe; a filter mesh cylinder is installed on the inner wall of the filter barrel, and a discharge pipe is fixedly connected to the bottom of the filter barrel.

[0004] The filtering device in the above patent solution inputs the calcium hydroxide slurry from the feed pipe and sprays it on the bottom of the filter cylinder from multiple feed branches, which can evenly cover the bottom of the filter cylinder, achieve uniform downstream filtration, and improve filtration efficiency and filtration quality. However, the lower filter is prone to clogging after long-term use. Although the filter in the above solution is also easy to disassemble and clean, manual disassembly and cleaning takes a lot of time and cannot be guaranteed to be cleaned. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a filtering device for preparing high-activity calcium hydroxide, including an outer barrel body, a partition plate is provided in the outer barrel body, the partition plate divides the interior of the outer barrel body into an upper chamber and a lower chamber, the upper chamber is provided with a liquid outlet, the lower chamber is provided with a liquid inlet, a plurality of cylindrical filter cartridges are provided above the partition plate, an annular flange is provided at the bottom of the partition plate, a liquid inlet hole is provided at the outer periphery of the annular flange, a drainage hole is provided at the bottom of the annular flange, the bottom of the cylindrical filter cartridge extends into the annular flange and is connected to the liquid inlet hole and the drainage hole, the bottom of the drainage hole is connected to a drainage pipe, and the drainage pipe extends outward through the lower chamber.

[0006] Preferably, a rotating shaft is rotatably provided inside the cylindrical filter cartridge, a scraper is provided on the side of the rotating shaft, the top of the rotating shaft passes through the top of the cylindrical filter cartridge, extends outward and is connected to a driven gear, a driving motor is provided on the top of the outer barrel body, the output end of the driving motor extends downward to the inner center position of the outer barrel body and is connected to a driving rod, a driving gear is connected to the driving rod, and the driving gear is meshed with the driven gear.

[0007] Preferably, the drainage pipe comprises a first drainage main pipe, a second drainage main pipe and a plurality of drainage branch pipes, the plurality of drainage branch pipes are connected to the first drainage main pipe, and the first drainage main pipe is threadedly connected to the second drainage main pipe.

[0008] Preferably, the outer barrel body is provided with an observation glass opening.

[0009] Preferably, a first solenoid valve is provided on the liquid outlet, a second solenoid valve is provided on the liquid inlet, and a third solenoid valve is provided on the second liquid discharge main pipe.

[0010] The advantages of the utility model are:

[0011] 1. This solution uses a partition plate to separate the interior of the outer barrel into an upper chamber and a lower chamber, and is equipped with multiple cylindrical filter cartridges. This design can achieve uniform downflow filtration and improve filtration efficiency and filtration quality.

[0012] 2. This solution realizes backwashing cleaning of the cylindrical filter cartridge through a backwashing operation, that is, pouring backwashing water into the liquid outlet of the upper chamber, and then retaining the unfiltered calcium hydroxide slurry in the lower chamber, thereby saving the cleaning time of the filter mechanism and preventing the influence of impurities on the filtration and purification of the calcium hydroxide slurry.

[0013] 3. In this scheme, a rotating shaft and a scraper are provided inside the cylindrical filter cartridge. When the drive motor is started, the rotation of the drive gear drives the rotating shaft to rotate, and the rotating shaft drives the scraper to rotate, which can scrape off the impurities on the inner wall of the cylindrical filter cartridge, thereby facilitating the cleaning of the cylindrical filter cartridge, greatly reducing the time and workload of manual disassembly and cleaning, and further improving the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional three-dimensional structural diagram of the utility model.

[0015] Figure 2 It is a cross-sectional plan view of the utility model.

[0016] Figure 3 This is a structural diagram of the internal filtering structure of the utility model.

[0017] Figure 4 The utility model is a cylindrical filter cartridge composition.

[0018] Figure 5 This is the external structure diagram of the utility model.

[0019] In the figure: 1 outer barrel, 2 partition plate, 3 upper chamber, 4 lower chamber, 5 liquid outlet, 6 liquid inlet, 7 cylindrical filter cartridge, 8 annular flange, 9 liquid inlet hole, 10 liquid discharge hole, 11 rotating shaft, 12 scraper, 13 driven gear, 14 driving motor, 15 driving rod, 16 driving gear, 17 first liquid discharge main pipe, 18 second liquid discharge main pipe, 19 liquid discharge branch pipe, 20 observation glass port, 21 first solenoid valve, 22 second solenoid valve, 23 third solenoid valve. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0022] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. At the same time, when an element is referred to as "fixed on" or "provided on" another element, it can be directly on the other element or there may be a central element at the same time. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be a central element at the same time. When an element is referred to as being "fixedly connected to" another element, it can be a common fixed connection method such as welding, bolting, or gluing. In short, for ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Example 1

[0023] like Figure 1-5As shown, a filtering device for preparing highly active calcium hydroxide comprises an outer cylinder 1, on which an observation glass port 20 is provided for observing the internal conditions of the outer cylinder. A partition plate 2 is provided inside the outer cylinder 1, and the partition plate 2 divides the internal conditions of the outer cylinder into an upper chamber 3 and a lower chamber 4. A liquid outlet 5 is provided on the upper chamber 3, and a liquid inlet 6 is provided on the lower chamber 4. A first solenoid valve 21 is provided on the liquid outlet 5, and a second solenoid valve 22 is provided on the liquid inlet 6. The two solenoid valves are used for opening and closing the liquid inlet 6 and the liquid outlet 5, respectively. A plurality of cylindrical filter cartridges 7 are provided above the partition plate 2, and the plurality of cylindrical filter cartridges 7 are arranged in an annular shape. The cylindrical filter cartridge 7 is a cylindrical structure with filter holes on the surface. The cylindrical filter cartridge 7 can increase the filtering area and improve the filtering efficiency. At the same time, the cylindrical filter cartridge 7 has a compact structure and occupies a small space.

[0024] Combination Figure 3 The bottom of the partition plate 2 is provided with an annular flange 8, the outer periphery of the annular flange 8 is provided with a liquid inlet hole 9, the bottom of the annular flange 8 is provided with a liquid discharge hole 10, the bottom of the cylindrical filter cartridge extends into the annular flange 8 and is connected with the liquid inlet hole 9 and the liquid discharge hole 10, the bottom of the liquid discharge hole 10 is connected with a liquid discharge pipe, and the liquid discharge pipe passes through the lower chamber 4 and extends outward. The liquid discharge pipe passes through the lower chamber 4 and extends outward, making the liquid discharge operation more convenient. The bottom of the liquid discharge hole 10 is connected with a liquid discharge pipe, and the filtered liquid is discharged in time through the liquid discharge pipe, avoiding the adverse effects caused by the accumulation of liquid in the lower chamber 4, and ensuring the stable operation of the filtering device.

[0025] Combination Figure 2 , the calcium hydroxide slurry first enters from the liquid inlet 6 of the lower chamber, then enters the cylindrical filter cartridge 7 along the liquid inlet hole 9 in the annular flange 8, and is discharged from the liquid outlet 5 in the upper chamber after being filtered by the cylindrical filter cartridge, and the impurities left after filtering remain in the cylindrical filter cartridge 7. After the filtration is completed, water for back cleaning is poured from the liquid outlet 5 in the upper chamber. At this time, the second electromagnetic valve 22 on the liquid inlet 6 in the lower chamber 4 is closed, and the water flow reversely flushes the cylindrical filter cartridge, flushes the impurities on the cylindrical filter cartridge and enters the drain pipe along the drainage hole 10 at the bottom for discharge. Since the second electromagnetic valve 22 is closed and the unfiltered calcium hydroxide slurry is retained in the lower chamber 4, the impurities will not enter the lower chamber 4. Even if some impurities enter, they will return to the cylindrical filter cartridge in the next filtering operation, and will not affect the filtration and purification of the calcium hydroxide slurry.

[0026] Combination Figure 4A rotating shaft 11 is rotatably provided inside the cylindrical filter cartridge 7, a scraper 12 is provided on the side of the rotating shaft 11, the top of the rotating shaft 11 passes through the top of the cylindrical filter cartridge 7 and extends outward and is connected to a driven gear 13, a driving motor 14 is provided at the top of the outer cylinder 1, the output end of the driving motor 14 extends downward to the inner center position of the outer cylinder 1 and is connected to a driving rod 15, a driving gear 16 is connected to the driving rod 15, and the driving gear 16 is meshed with the driven gear 13.

[0027] When the driving motor 14 drives the driving rod 15 to rotate, the driving gear 16 also drives the driven gear 13 to rotate, thereby driving the rotating shaft 11 in each cylindrical filter cartridge 7 to rotate, and the rotating shaft 11 drives the scraper 12 to rotate, scraping away impurities on the inner wall of the cylindrical filter cartridge 7, so as to better realize the cleaning of the cylindrical filter cartridge 7. The time and workload of manual disassembly and cleaning are greatly reduced.

[0028] Combination Figure 3 The drainage pipe includes a first drainage main pipe 17, a second drainage main pipe 18 and a plurality of drainage branch pipes 19. The plurality of drainage branch pipes 19 are connected to the first drainage main pipe 17, and the first drainage main pipe 17 is threadedly connected to the second drainage main pipe 18. One end of each drainage branch pipe 19 is connected to the drainage hole 10 on the annular flange 8, and is used to discharge impurities into the first drainage main pipe 17 during backwashing. The drainage main pipe is divided into the first drainage main pipe 17 and the second drainage main pipe 18. When the drainage pipeline is blocked or needs to be cleaned, it is only necessary to disassemble the first drainage main pipe 17 and the second drainage main pipe 18 for cleaning and maintenance. There is no need to disassemble the entire drainage system on a large scale, which saves maintenance time and cost and effectively solves the blockage problem of the drainage pipeline. The second drainage main pipe 18 is a curved structure, so that the discharged liquid forms a smoother flow path in the pipeline. Compared with a straight structure, a curved structure can reduce the resistance and friction of the liquid in the pipe, so that the liquid can flow more smoothly and improve the drainage efficiency. When the fluid flows in a curved pipe, the impact of the fluid and the generation of eddy currents are reduced, thereby reducing the degree of noise and vibration and improving the comfort of the operating environment. The third solenoid valve 23 on the second drainage main pipe 18 is used to control the opening and closing of the second drainage main pipe 18.

[0029] In this embodiment, a partition plate 2 is used to divide the interior of the outer barrel into an upper chamber 3 and a lower chamber 4, and a plurality of cylindrical filter cartridges 7 are provided. This design can also achieve uniform downstream filtration, thereby improving filtration efficiency and filtration quality.

[0030] 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 filtering device for preparing highly active calcium hydroxide, characterized in that: The invention comprises an outer cylinder (1), wherein a partition plate (2) is provided inside the outer cylinder (1), wherein the partition plate (2) divides the interior of the outer cylinder (1) into an upper chamber (3) and a lower chamber (4), wherein a liquid outlet (5) is provided on the upper chamber (3), and a liquid inlet (6) is provided on the lower chamber (4), wherein a plurality of cylindrical filter cartridges (7) are provided above the partition plate (2), wherein an annular flange (8) is provided at the bottom of the partition plate (2), wherein a liquid inlet hole (9) is provided at the outer periphery of the annular flange (8), wherein a liquid discharge hole (10) is provided at the bottom of the annular flange (8), wherein the bottom of the cylindrical filter cartridge (7) extends into the annular flange (8) and is in communication with the liquid inlet hole (9) and the liquid discharge hole (10), wherein the bottom of the liquid discharge hole (10) is connected to a liquid discharge pipe, wherein the liquid discharge pipe passes through the lower chamber (4) and extends outwards.

2. The filter device for preparing highly active calcium hydroxide according to claim 1, characterized in that: A rotating shaft (11) is rotatably provided inside the cylindrical filter cartridge (7), a scraper (12) is provided on the side of the rotating shaft (11), the top of the rotating shaft (11) passes through the top of the cylindrical filter cartridge (7) and extends outwards and is connected to a driven gear (13), a driving motor (14) is provided at the top of the outer cylinder (1), an output end of the driving motor (14) extends downwards to the inner center position of the outer cylinder (1) and is connected to a driving rod (15), a driving gear (16) is connected to the driving rod (15), and the driving gear (16) is meshed with the driven gear (13).

3. The filter device for preparing highly active calcium hydroxide according to claim 2, characterized in that: The drainage pipe comprises a first drainage main pipe (17), a second drainage main pipe (18) and a plurality of drainage branch pipes (19); the plurality of drainage branch pipes (19) are in communication with the first drainage main pipe (17); and the first drainage main pipe (17) and the second drainage main pipe (18) are threadedly connected.

4. The filter device for preparing highly active calcium hydroxide according to claim 3, characterized in that: The outer cylinder (1) is provided with an observation glass opening (20).

5. The filter device for preparing highly active calcium hydroxide according to claim 4, characterized in that: The liquid outlet (5) is provided with a first solenoid valve (21), the liquid inlet (6) is provided with a second solenoid valve (22), and the second liquid discharge main pipe (18) is provided with a third solenoid valve (23).

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