Filtering system for monopotassium phosphate crystallization feed liquid

Abstract

The utility model relates to the technical field of monopotassium phosphate production, in particular to a filtering system for monopotassium phosphate crystallization feed liquid, which comprises a feed liquid storage tank, a filtering device, a gas-liquid separation tank, a discharging device, a condensing device and a vacuum pump. The filtering system with the structure is reasonable in design, realizes effective separation of monopotassium phosphate crystals and water, can realize continuous operation, greatly improves the separation efficiency, and reduces the labor intensity of workers.

Description

Technical Field

[0001] The utility model relates to the technical field of potassium dihydrogen phosphate production, in particular to a filtering system for potassium dihydrogen phosphate crystal liquid. Background Art

[0002] After potassium dihydrogen phosphate crystallizes, the liquid needs to be filtered. Currently, centrifuge filtration equipment is used. However, since the centrifuge is intermittently produced, the production efficiency is low. Since the staff needs to supervise the operation of the equipment during the operation of the centrifuge, the staff's work intensity is high. Therefore, in view of the above problems, it is necessary to develop a filtration system for potassium dihydrogen phosphate crystal liquid. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in view of the deficiencies of the prior art, a filtering system for potassium dihydrogen phosphate crystallization liquid is provided, by which the crystals and the filtrate in the crystal liquid can be quickly separated, the operation can be continuous, the separation efficiency is greatly improved, and the labor intensity of the workers is reduced.

[0004] In order to solve the above technical problems, the technical solution of the utility model is:

[0005] A filtering system for potassium dihydrogen phosphate crystal liquid comprises a liquid storage tank, wherein the discharge port of the liquid storage tank is connected to a storage bin of a filtering device, a rotating material sticking structure is arranged above the interior of the storage bin, the rotating material sticking structure comprises a rotating shaft with a hollow structure, one end of the rotating shaft is connected to a driving device, and the other end of the rotating shaft is connected to a gas-liquid separation tank; a plurality of hollow material sticking disks are arranged on the rotating shaft, the material sticking structure formed by the plurality of material sticking disks is cylindrical as a whole, each of the material sticking disks is fixedly connected to the rotating shaft through a plurality of connecting parts, a filtrate channel connected to the rotating shaft is arranged between two adjacent connecting parts, a discharging and dehydrating component is arranged on the outer wall of the material sticking disk, a rotating component is arranged at the discharging end of the discharging and dehydrating component, a discharging device is arranged below the discharging end of the discharging and dehydrating component, an exhaust port of the gas-liquid separation tank is connected to a condensing device, and an exhaust port of the condensing device is connected to a vacuum pump.

[0006] As an improved technical solution, the plurality of connecting components are arranged at equal intervals, and each of the connecting components includes an upper connecting portion and a lower connecting portion, the lower connecting portion includes an arc-shaped plate and two obliquely arranged lower connecting plates, one end of the two lower connecting plates is fixedly connected to the rotating shaft, and the other end of the two lower connecting plates is fixedly connected to the arc-shaped plate; the upper connecting portion includes two obliquely arranged upper connecting plates, one end of the two upper connecting plates is fixedly connected to the arc-shaped plate, and the other end of the two upper connecting plates is fixedly connected to the inner wall of the adhesive disk.

[0007] As an improved technical solution, the filtrate channel is in a Y-shape.

[0008] As an improved technical solution, the unloading and dehydration component is a layer of filter cloth arranged on the outer walls of the plurality of sticky material trays.

[0009] As an improved technical solution, the rotating component includes a first roller, a second roller and a third roller. The distance between the first roller and the adhesive disk is greater than the distance between the second roller and the third roller and the adhesive disk respectively. The second roller is located on the lower side of the first roller, and the third roller is located on the lower side of the second roller.

[0010] As an improved technical solution, the liquid outlet of the gas-liquid separation tank is connected to the spray pipe of the filtering device.

[0011] As an improved technical solution, the overflow port of the storage bin is connected to the liquid storage tank.

[0012] After adopting the above technical solution, the beneficial effects of the utility model are:

[0013] The filtering system for potassium dihydrogen phosphate crystal liquid comprises a liquid storage tank, the discharge port of which is connected to a storage bin of a filtering device, a rotating material sticking structure is arranged above the interior of the storage bin, the rotating material sticking structure comprises a rotating shaft with a hollow structure, one end of which is connected to a driving device, and the other end of which is connected to a gas-liquid separation tank; a plurality of hollow material sticking disks are arranged on the rotating shaft, the material sticking structure formed by the plurality of material sticking disks is cylindrical as a whole, each material sticking disk is fixedly connected to the rotating shaft through a plurality of connecting parts, a filtrate channel connected to the rotating shaft is arranged between two adjacent connecting parts, a discharging and dehydrating component is arranged on the outer wall of the material sticking disk, a rotating component is arranged at the discharging end of the discharging and dehydrating component, a discharging device is arranged below the discharging end of the discharging and dehydrating component, an exhaust port of the gas-liquid separation tank is connected to a condensing device, and an exhaust port of the condensing device is connected to a vacuum pump. In actual production, potassium dihydrogen phosphate liquid enters the interior of the liquid storage tank through a delivery pump, and then enters the storage bin of the filter device under the action of the delivery pump. The driving device starts the rotation of the sticking structure, and the crystal liquid adheres to multiple sticking disks. Then, under the action of the vacuum pump, the filtrate passes through the unloading and dehydration components and enters the filtrate channel, and then enters the interior of the rotating shaft along the filtrate channel. After being discharged from the other end of the rotating shaft, it enters the interior of the gas-liquid separation tank along the pipeline. The separated gas is then condensed through the condensation device. The crystal material attached to the sticking disk after dehydration falls from the unloading end of the unloading and dehydration components along with the rotating components and is discharged through the discharging auger. The filtration system of the above structure is reasonably designed, realizes the effective separation of potassium dihydrogen phosphate crystals and water, can be operated continuously, greatly improves the separation efficiency, and reduces the labor intensity of workers.

[0014] Since multiple connecting parts are arranged in an equidistant manner, each connecting part includes an upper connecting part and a lower connecting part, the lower connecting part includes an arc-shaped plate and two lower connecting plates arranged obliquely, one end of the two lower connecting plates is fixedly connected to the rotating shaft, and the other end of the two lower connecting plates is fixedly connected to the arc-shaped plate; the upper connecting part includes two upper connecting plates arranged obliquely, one end of the two upper connecting plates is fixedly connected to the arc-shaped plate, and the other end of the two upper connecting plates is fixedly connected to the inner wall of the adhesive disc. The two upper connecting plates of the upper connecting part and the arc-shaped plate form a triangle, and the two lower connecting plates of the lower connecting part and the arc-shaped plate form a triangle, and the triangle has a stable shape. The connecting parts of this structure enable the adhesive disc to be fixedly connected to the rotating shaft.

[0015] Since the shape of the filtrate channel is Y-shaped, when the vacuum pump is evacuated, the filtrate passes through the Y-shaped filtrate channel into the interior of the rotating shaft, and then enters the interior of the gas-liquid separation tank from one end of the rotating shaft. The Y-shaped filtrate channel is provided to facilitate the discharge of the filtrate.

[0016] Since the unloading dehydration component is a layer of filter cloth arranged on the outer wall of multiple sticking disks. As the rotating sticking structure rotates, the crystal material liquid in the storage bin adheres to the filter cloth, and then under the action of the vacuum pump, the liquid passes through the filter cloth and the hollow structure sticking disk, enters the interior of the rotating shaft along the filtrate channel, and then enters the interior of the gas-liquid separation tank from one end of the rotating shaft. As the rotating sticking structure rotates, the dehydrated crystal material falls off from one side of the unloading end and falls into the discharging auger for discharge. The unloading dehydration component of the above structure is reasonably designed and simple in structure. On the one hand, it is convenient to remove the water in the crystal material liquid, and on the other hand, it is also convenient to unload the crystal material.

[0017] Since the rotating component includes the first roller, the second roller and the third roller, the distance between the first roller and the material sticking disk is greater than the distance between the second roller and the third roller and the material sticking disk, the second roller is located on the lower side of the first roller, and the third roller is located on the lower side of the second roller. The distances between the first roller, the second roller and the third roller and the rotating material sticking structure are different, and the heights between the first roller, the second roller and the third roller and the ground are different. This design facilitates the unloading and dehydration component to rotate with the material sticking structure, and facilitates the crystallized material to be unloaded from the unloading end.

[0018] Since the liquid outlet of the gas-liquid separation tank is connected to the spray pipe of the filter device, the liquid after gas-liquid separation is discharged from the liquid outlet and enters the spray pipe along the pipe under the action of the delivery pump, and then washes the adhesive structure. Through this design, water is saved and the washing of the adhesive structure is also achieved.

[0019] Since the overflow port of the storage bin is connected to the liquid storage tank, the overflowed liquid flows out of the overflow port and re-enters the interior of the liquid storage tank along the pipeline. By setting the overflow port, the liquid is prevented from overflowing the storage bin, which effectively solves the problem of liquid loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a filtration system for potassium dihydrogen phosphate crystal liquid of the utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of the side structure of the filter device;

[0022] Among them, 1-liquid storage tank, 2-filtering device, 20-storage bin, 21-rotating sticking structure, 210-rotating shaft, 211-sticking disk, 212-connecting component, 2120-upper connecting part, 2121-lower connecting part, 21210-arc plate, 21211-lower connecting plate, 213-filtrate channel, 22-spraying pipe, 3-gas-liquid separation tank, 4-discharging and dehydration component, 5-rotating component, 50-first roller, 51-second roller, 52-third roller, 6-discharging device, 7-condensing device, 8-vacuum pump, 9-driving device, 90-motor, 91-gear. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] A filtration system for potassium dihydrogen phosphate crystal liquid, such as Figure 1 and Figure 2As shown in common, it includes a liquid storage tank 1, the discharge port of the liquid storage tank 1 is connected to the storage bin 20 of the filtering device 2, and a rotating material sticking structure 21 is provided on the upper part of the storage bin 20. The rotating material sticking structure 21 includes a hollow structure shaft 210, one end of the shaft 210 is connected to the driving device 9 (including a motor 90, and the output shaft of the motor and the shaft are transmitted through a gear 91), and the other end of the shaft 210 is connected to the gas-liquid separation tank 3 (including a tank body, an inlet is provided on one side of the upper part of the tank body, a liquid outlet is provided at the bottom of the tank body, and an exhaust port is provided at the top of the tank body) through a rotating joint; a plurality of hollow structure sticking discs 211 are provided on the shaft 210, and the sticking structure formed by the plurality of sticking discs 211 is cylindrical as a whole. shape, each sticky disk 211 is fixedly connected to the rotating shaft 210 by a plurality of connecting parts 212, a filtrate channel 213 connected to the rotating shaft 210 is provided between two adjacent connecting parts 212, a discharging and dehydrating part 4 is provided on the outer wall of the sticky disk 211, a rotating part 5 is provided at the discharging end of the discharging and dehydrating part 4, a discharging device 6 (discharging auger) is provided below the discharging end of the discharging and dehydrating part 4, the exhaust port of the gas-liquid separation tank 3 is connected to the condensing device 7 (comprising a main body, an air inlet is provided on one side of the lower part of the main body, an exhaust port and a liquid outlet are respectively provided on the top and bottom of the main body, a cold water inlet is provided on one side of the upper part of the main body, and a multi-layer perforated plate is provided inside the main body), and the exhaust port of the condensing device 7 is connected to the vacuum pump 8.

[0025] In actual production, potassium dihydrogen phosphate liquid enters the interior of the liquid storage tank through a delivery pump, and then enters the storage bin of the filter device under the action of the delivery pump. The driving device starts the rotation of the sticking structure, and the crystal liquid adheres to multiple sticking disks. Then, under the action of the vacuum pump, the filtrate passes through the unloading and dehydration components and enters the filtrate channel, and then enters the interior of the rotating shaft along the filtrate channel. After being discharged from the other end of the rotating shaft, it enters the interior of the gas-liquid separation tank along the pipeline. The separated gas is then condensed through the condensation device. The crystal material attached to the sticking disk after dehydration falls from the unloading end of the unloading and dehydration components along with the rotating components and is discharged through the discharging auger. The filtration system of the above structure is reasonably designed, realizes the effective separation of potassium dihydrogen phosphate crystals and water, can be operated continuously, greatly improves the separation efficiency, and reduces the labor intensity of workers.

[0026] The plurality of connecting parts 212 are arranged at equal intervals, and each connecting part 212 includes an upper connecting part 2120 and a lower connecting part 2121. The lower connecting part 2121 includes an arc plate 21210 and two lower connecting plates 21211 arranged obliquely. One end of the two lower connecting plates 21211 is fixedly connected to the rotating shaft 210, and the other end of the two lower connecting plates 21211 is fixedly connected to the arc plate 21210. The upper connecting part 2120 includes two upper connecting plates arranged obliquely. One end of the two upper connecting plates is fixedly connected to the arc plate 21210, and the other end of the two upper connecting plates is fixedly connected to the inner wall of the adhesive disc 211. The two upper connecting plates of the upper connecting part and the arc plate form a triangle, and the two lower connecting plates of the lower connecting part and the arc plate form a triangle. The triangle has a stable shape. The connecting parts of this structure enable the adhesive disc to be fixedly connected to the rotating shaft.

[0027] The shape of the filtrate channel 213 is Y-shaped. When the vacuum pump is evacuated, the filtrate passes through the Y-shaped filtrate channel and enters the interior of the rotating shaft, and then enters the interior of the gas-liquid separation tank from one end of the rotating shaft. The Y-shaped filtrate channel is provided to facilitate the discharge of the filtrate.

[0028] The unloading dehydration component 4 is a layer of filter cloth arranged on the outer wall of multiple material sticking disks 211. As the rotating material sticking structure rotates, the crystal material liquid in the storage bin adheres to the filter cloth, and then under the action of the vacuum pump, the liquid passes through the filter cloth and the hollow material sticking disk, enters the interior of the rotating shaft along the filtrate channel, and then enters the interior of the gas-liquid separation tank from one end of the rotating shaft. As the rotating material sticking structure rotates, the dehydrated crystal material falls off from one side of the unloading end and falls into the discharging auger, and is discharged through the discharging auger.

[0029] The rotating component 5 includes a first roller 50, a second roller 51 and a third roller 52 (the two ends of the first roller, the second roller and the third roller are fixed on the bracket through bearings), the distance between the first roller 50 and the material sticking disk is greater than the distance between the second roller 51 and the third roller 52 and the material sticking disk, the second roller 51 is located on the lower side of the first roller 50, and the third roller 52 is located on the lower side of the second roller 51. The distances between the first roller, the second roller and the third roller and the rotating material sticking structure are different, and the heights between the first roller, the second roller and the third roller and the ground are different. This design facilitates the unloading and dehydration components to rotate with the material sticking structure, and facilitates the crystallized material to be unloaded from the unloading end.

[0030] The liquid outlet of the gas-liquid separation tank 3 is connected to the spray pipe 22 of the filter device 2. After the gas-liquid separation, the liquid is discharged from the liquid outlet and enters the spray pipe along the pipe under the action of the delivery pump, and then washes the viscous material structure.

[0031] The overflow port of the storage bin 20 is connected to the liquid storage tank 1. The overflowed liquid flows out of the overflow port and re-enters the interior of the liquid storage tank along the pipeline. By setting the overflow port, the liquid is prevented from overflowing the storage bin, which effectively solves the problem of liquid loss.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A filtration system for potassium dihydrogen phosphate crystal liquid, characterized in that: It includes a liquid storage tank, the discharge port of which is connected to the storage bin of the filtering device, a rotating material sticking structure is provided above the interior of the storage bin, the rotating material sticking structure includes a hollow shaft, one end of the shaft is connected to a driving device, and the other end of the shaft is connected to a gas-liquid separation tank; a plurality of hollow material sticking disks are provided on the shaft, the sticking structure formed by the plurality of material sticking disks is cylindrical as a whole, each of the material sticking disks is fixedly connected to the shaft by a plurality of connecting parts, a filtrate channel connected to the shaft is provided between two adjacent connecting parts, a discharging and dehydrating component is provided on the outer wall of the material sticking disk, a rotating component is provided at the discharging end of the discharging and dehydrating component, a discharging device is provided below the discharging end of the discharging and dehydrating component, the exhaust port of the gas-liquid separation tank is connected to a condensing device, and the exhaust port of the condensing device is connected to a vacuum pump.

2. A filtration system for potassium dihydrogen phosphate crystal liquid according to claim 1, characterized in that: The multiple connecting parts are arranged in an equidistant manner, and each of the connecting parts includes an upper connecting part and a lower connecting part, the lower connecting part includes an arc-shaped plate and two obliquely arranged lower connecting plates, one end of the two lower connecting plates is fixedly connected to the rotating shaft, and the other end of the two lower connecting plates is fixedly connected to the arc-shaped plate; the upper connecting part includes two obliquely arranged upper connecting plates, one end of the two upper connecting plates is fixedly connected to the arc-shaped plate, and the other end of the two upper connecting plates is fixedly connected to the inner wall of the adhesive disk.

3. A filtration system for potassium dihydrogen phosphate crystal liquid according to claim 1, characterized in that: The filtrate channel is in a Y shape.

4. A filtration system for potassium dihydrogen phosphate crystal liquid according to claim 1, characterized in that: The unloading and dehydration component is a layer of filter cloth arranged on the outer walls of the plurality of sticking disks.

5. A filtration system for potassium dihydrogen phosphate crystal liquid according to claim 1, characterized in that: The rotating component includes a first roller, a second roller and a third roller. The distance between the first roller and the adhesive disk is greater than the distance between the second roller and the third roller and the adhesive disk respectively. The second roller is located on the lower side of the first roller, and the third roller is located on the lower side of the second roller.

6. A filtration system for potassium dihydrogen phosphate crystal liquid according to claim 1, characterized in that: The liquid outlet of the gas-liquid separation tank is connected to the spray pipeline of the filtering device.

7. A filtration system for potassium dihydrogen phosphate crystal liquid according to claim 1, characterized in that: The overflow port of the storage bin is connected to the liquid storage tank.

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