A centrifugal dehydration device for producing slurry for dipotassium hydrogen phosphate

Abstract

The present invention relates to the technical field of centrifugal dehydration, and specifically, to a centrifugal dehydration device for producing slurry for dipotassium hydrogen phosphate. The device comprises a bracket, a barrel is fixedly connected inside the bracket, and a barrel cover is movably connected to the top of the barrel. The slurry inside the separation component is stirred by a centrifugal component, so that the slurry rotates at high speed to generate centrifugal force, so that the liquid in the slurry is filtered and removed through the separation component, and the slurry sticking to the inner wall of the separation component is scraped off during the rotation of the centrifugal component, and the scraped slurry will be subjected to secondary centrifugal stirring and dehydration inside the separation component. According to the different concentrations of the slurry, the mesh size of the separation component is adjusted to adapt to the centrifugal dehydration of slurries of different concentrations, and while the mesh size is adjusted, the stirring angle of the blades inside the centrifugal component is adjusted, so as to adjust the stirring flexibility of the centrifugal component, so as to facilitate adaptation to different centrifugal stirring states of the slurry.

Description

Technical Field

[0001] The invention relates to the technical field of centrifugal dehydration, in particular to a centrifugal dehydration device for producing slurry for dipotassium hydrogen phosphate. Background Art

[0002] In the production process of dipotassium hydrogen phosphate, a slurry containing solid dipotassium hydrogen phosphate particles and mother liquor is usually produced. This slurry is mainly composed of dipotassium hydrogen phosphate crystals and mother liquor. Among them, as the target product of production, the size, shape and purity of dipotassium hydrogen phosphate crystals have an important influence on the subsequent processing process. The mother liquor usually contains unreacted raw materials, impurities and dissolved dipotassium hydrogen phosphate. The composition and properties of the mother liquor will give the slurry specific fluidity, viscosity, pH and other characteristics. Generally, dipotassium hydrogen phosphate is generated by the reaction of phosphoric acid and potassium hydroxide, and then the slurry is obtained after steps such as crystallization. This slurry needs to be further processed to improve the purity and quality of the product, such as separating solid dipotassium hydrogen phosphate and mother liquor through a centrifugal dehydration device.

[0003] In the production process of dipotassium hydrogen phosphate, if the temperature is unstable, the viscosity of the slurry will change; for example, when the temperature rises, the viscosity of the slurry may decrease, and when the temperature decreases, the viscosity may increase. However, when the existing centrifugal dehydration device is used to dehydrate dipotassium hydrogen phosphate slurry, the viscosity of the slurry has a significant impact on the clogging of the filter screen; if the slurry contains unreacted raw materials or other impurities, it will cause the slurry viscosity to increase. When the slurry viscosity is high, its fluidity will be greatly reduced, which will significantly accelerate the deposition rate of solid particles at the filter screen, making it easier to cause the filter screen to clog.

[0004] In view of this, the present invention provides a centrifugal dehydration device for producing slurry for dipotassium hydrogen phosphate. Summary of the invention

[0005] The object of the present invention is to provide a centrifugal dehydration device for producing slurry for dipotassium hydrogen phosphate to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides a centrifugal dehydration device for producing slurry for dipotassium hydrogen phosphate, comprising a bracket, a material barrel is fixedly connected to the inside of the bracket, a barrel cover is movably connected to the top of the material barrel, and a feed pipe is fixedly connected to the top of the barrel cover;

[0007] The inside of the barrel is movably connected with a separation component, the inside of the barrel cover and the inside of the separation component are movably connected with a centrifugal component, the bottom of the barrel is fixedly connected with a discharge pipe, and the inside of the discharge pipe is movably connected with a filter component;

[0008] The centrifugal component is used to drive the slurry to be centrifugally dehydrated inside the separation component, while scraping off the slurry sticking to the inner wall of the separation component and performing secondary dehydration. The separation component is used to discharge the liquid in the slurry, and at the same time, adjust the size of the separation holes according to the different concentrations of the slurry. While adjusting the hole size, the stirring softness of the centrifugal component is adjusted.

[0009] As a further improvement of the technical solution, a plurality of clips are fixedly connected between the barrel cover and the outer wall of the barrel, a bottom block and a top block are fixedly connected to the outer wall of the barrel cover, the top block is movably connected to the top of the bottom block, a hinge is fixedly connected between the bottom block and the top block, and a cylinder is fixedly connected between the bottom of the bottom block and the top of the bracket.

[0010] As a further improvement of the present technical solution, the filter assembly includes a filter plate, a plurality of filter plates are movably connected inside the discharge pipe, a blade is fixedly connected to the inner wall of the discharge pipe near the top of the filter plate, a support plate is fixedly connected to the outer wall of the discharge pipe, a support rod is movably connected between the inside of the support plate and the inside of the filter plate passing through the discharge pipe, and the support rod passes through the outer wall of the filter plate and is movably connected to a nut.

[0011] As a further improvement of the present technical solution, the separation assembly includes a filter cartridge, which is movably connected to the inside of a material barrel, a sieve cartridge movably connected to the inside of the filter cartridge, a gear ring is fixedly connected to the outer wall of the sieve cartridge near the top, a gear is movably connected to the outer wall of the gear ring, the gear ring and the gear are both movably connected to the inside of the filter cartridge, a screw is fixedly connected at the center of the inner bottom of the sieve cartridge, and a centrifugal assembly is movably connected between the screw passing through the outer wall of the filter cartridge and the inside of the barrel cover.

[0012] As a further improvement of the present technical solution, the centrifugal assembly includes a rotating rod, which is movably connected to the inside of the barrel cover, and a plurality of shafts are movably connected to the inside of the rotating rod, and a plurality of the shafts pass through the outer wall of the rotating rod and are fixedly connected to blades, a plurality of the shafts in the same row that pass through the ends of the blades are movably connected to scrapers, and a plurality of the shafts are movably connected to pushing members between the outer wall of the rotating rod and the outer wall of the screw.

[0013] As a further improvement of the present technical solution, the pushing member includes a slider, which is movably connected between the outer wall of the screw rod and the inner wall of the rotating rod, a long rod is fixedly connected to the top of the slider, a plurality of push rods are fixedly connected to the outer wall of the long rod, and a plurality of push plates are fixedly connected to the outer walls of the shaft rods, and the plurality of push rods are respectively located under the plurality of push plates.

[0014] As a further improvement of the technical solution, the material barrel is divided into two parts, the upper part of the material barrel is a cylindrical structure, and the lower part of the material barrel is a conical structure.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the centrifugal dehydration device for producing slurry for dipotassium hydrogen phosphate, the slurry inside the separation component is stirred by the centrifugal component, so that the slurry rotates at high speed to generate centrifugal force, so that the liquid in the slurry is filtered and removed through the separation component. At the same time, centrifugal force is generated on the rotating slurry, causing the solid particles in the slurry to accumulate more tightly on the inner wall of the separation component, thereby increasing the filtration area and improving the filtration effect; and under the rotation of the centrifugal component, the slurry sticking to the inner wall of the separation component can also be scraped off, so that the scraped slurry will be subjected to secondary centrifugal stirring inside the separation component, and the slurry is fully centrifugally dehydrated.

[0017] 2. In the centrifugal dehydration device for producing dipotassium hydrogen phosphate slurry, the particle size inside the slurry is different according to the different slurry concentrations, so the mesh size of the separation component is adjusted to adapt to the centrifugal dehydration of slurries of different concentrations. The liquid centrifuged from the slurry is secondary filtered through the filtering component, and the filtration time is extended while performing multi-stage filtration.

[0018] 3. In the centrifugal dehydration device for producing dipotassium hydrogen phosphate slurry, while adjusting the mesh size of the separation component, the stirring angle of the blades inside the centrifugal component is adjusted, thereby adjusting the stirring softness of the centrifugal component to facilitate adaptation to different centrifugal stirring states of the slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the macropore separation direction structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the small hole separation direction structure of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the centrifugal assembly of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the pusher of the present invention;

[0025] Figure 7 It is a schematic diagram of the separation component structure of the present invention;

[0026] Figure 8 It is a schematic diagram of the structure of the filter assembly of the present invention;

[0027] Fig. 9 It is a schematic diagram of the sealing structure of the present invention.

[0028] The meaning of each number in the figure is:

[0029] 1. Bracket; 11. Material barrel; 12. Barrel cover; 120. Feeding tube; 13. Bucket; 130. Bottom block; 131. Top block; 132. Hinge; 133. Cylinder;

[0030] 14. Discharge pipe;

[0031] 15. filter assembly; 150. filter plate; 151. blade; 152. support plate; 153. support rod; 154. nut;

[0032] 16. Separation assembly; 160. Filter cartridge; 161. Screen cartridge; 162. Gear ring; 163. Gear; 164. Screw;

[0033] 17, centrifugal assembly; 170, rotating rod; 171, blade; 172, scraper; 173, shaft; 174, pusher;

[0034] 1740. Slider; 1741. Long rod; 1742. Push rod; 1743. Push plate. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings 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.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention. Example

[0037] See also Figure 1-Figure 4 As shown, the purpose of this embodiment is to provide a centrifugal dehydration device for producing dipotassium hydrogen phosphate slurry, including a bracket 1, a barrel 11 is fixedly connected inside the bracket 1, a barrel cover 12 is movably connected to the top of the barrel 11, and a feed pipe 120 is fixedly connected to the top of the barrel cover 12;

[0038] The inside of the barrel 11 is movably connected with a separation assembly 16, the inside of the barrel cover 12 and the inside of the separation assembly 16 are movably connected with a centrifugal assembly 17, the bottom of the barrel 11 is fixedly connected with a discharge pipe 14, and the inside of the discharge pipe 14 is movably connected with a filter assembly 15;

[0039] The centrifugal assembly 17 is used to drive the slurry to centrifugally dehydrate inside the separation assembly 16, and at the same time, scrape off the slurry sticking to the inner wall of the separation assembly 16 and perform secondary dehydration. The separation assembly 16 is used to discharge the liquid in the slurry, and at the same time, adjust the size of the separation hole according to the different concentrations of the slurry, and at the same time adjust the size of the hole, and adjust the stirring softness of the centrifugal assembly 17;

[0040] The improvement of this embodiment is that:

[0041] The potassium hydrogen phosphate slurry is transported into the separation component 16 through the feed pipe 120, and the slurry inside the separation component 16 is stirred by the centrifugal component 17, so that the slurry rotates at a high speed to generate centrifugal force, so that the liquid in the slurry is filtered and removed through the separation component 16, and the slurry sticking to the inner wall of the separation component 16 is scraped off during the rotation of the centrifugal component 17, and the scraped slurry is subjected to secondary centrifugal stirring inside the separation component 16 to fully centrifugally dehydrate the slurry;

[0042] According to the different slurry concentrations, the particle sizes inside are different, so the mesh size of the separation component 16 is adjusted to adapt to the centrifugal dehydration of slurries of different concentrations, and while adjusting the mesh size, the stirring angle of the blades 171 inside the centrifugal component 17 is adjusted, so as to adjust the stirring softness of the centrifugal component 17 to adapt to different centrifugal stirring states of the slurry; by pouring the liquid centrifuged from the slurry from the barrel 11 into the discharge pipe 14, the filter component 15 in the discharge pipe 14 performs secondary filtration on it, and while performing multi-stage filtration on it, the filtration time is extended.

[0043] First, the specific structure of the filter assembly 15 is disclosed. The filter assembly 15 includes a filter plate 150. A plurality of filter plates 150 are movably connected inside the discharge pipe 14. A blade 151 is fixedly connected to the inner wall of the discharge pipe 14 near the top of the filter plate 150. A support plate 152 is fixedly connected to the outer wall of the discharge pipe 14. A support rod 153 is movably connected between the inside of the support plate 152 and the inside of the filter plate 150 passing through the discharge pipe 14. The support rod 153 passes through the outer wall of the filter plate 150 and is movably connected to a nut 154.

[0044] See also Figure 3 , Figure 4 and Figure 8As shown, by pumping the filter plate 150 inside the discharge pipe 14, the distance between the filter plate 150 and the inner wall of the discharge pipe 14 can be adjusted, so that the liquid part of the slurry can be conveniently diverted; and, during the pulling and pulling process of the filter plate 150, its surface will be scraped on the surface of the blade 151, which helps to conveniently remove the slurry blocked on the filter plate 150; the support rod 153 is clamped between the support plate 152 and the filter plate 150, and the position of the support rod 153 is fixed by the nut 154, thereby fixing the position of the filter plate 150; through the mesh holes on the multiple filter plates 150, the liquid can be subjected to secondary multi-stage filtration, and at the same time, the flow direction of the liquid can be diverted, thereby extending the contact time between the liquid and the filter plate 150, thereby improving the fineness of the slurry dehydration.

[0045] Secondly, the specific structure of the separation component 16 is disclosed. The separation component 16 includes a filter cartridge 160, which is movably connected to the inside of the material barrel 11. A sieve cartridge 161 is movably connected to the inside of the filter cartridge 160. A gear ring 162 is fixedly connected to the outer wall of the sieve cartridge 161 near the top. A gear 163 is movably connected to the outer wall of the gear ring 162. Both the gear ring 162 and the gear 163 are movably connected to the inside of the filter cartridge 160. A screw 164 is fixedly connected at the center of the inner bottom of the sieve cartridge 161. The screw 164 passes through the outer wall of the filter cartridge 160 and is movably connected to the inside of the barrel cover 12 to form a centrifugal component 17.

[0046] See also Figure 3 , Figure 4 and Figure 7 As shown, the motor output shaft drives the gear 163 to rotate, the gear 163 drives the gear ring 162 to rotate, and the gear ring 162 drives the screen cylinder 161 to rotate inside the filter cylinder 160, so that the holes on the screen cylinder 161 are aligned with the holes on the filter cylinder 160; and while the rotation of the screen cylinder 161 is adjusted, the screw 164 is also driven to rotate inside the centrifugal assembly 17 to adjust the angle of the blade 171 in the centrifugal assembly 17;

[0047] When it is necessary to centrifugally dehydrate and separate the high-concentration dipotassium hydrogen phosphate slurry, for the high-viscosity slurry, the filter mesh aperture can be appropriately selected to be slightly larger. The high-viscosity slurry has poor fluidity, and a smaller filter mesh aperture will further increase the filtration resistance and affect the dehydration efficiency; therefore, by aligning the holes on the screen cylinder 161 with the larger holes on the filter cylinder 160, the high-concentration dipotassium hydrogen phosphate slurry is filtered and separated;

[0048] When it is necessary to centrifugally dehydrate and separate the low-concentration dipotassium hydrogen phosphate slurry, for the low-viscosity slurry, a filter with a relatively small pore size can be selected to improve the separation accuracy. Therefore, by aligning the holes on the screen cylinder 161 with the smaller holes on the filter cylinder 160, the low-concentration dipotassium hydrogen phosphate slurry is filtered and separated.

[0049] Finally, the specific structure of the centrifugal assembly 17 is disclosed. The centrifugal assembly 17 includes a rotating rod 170, which is movably connected to the inside of the barrel cover 12. A plurality of shafts 173 are movably connected inside the rotating rod 170. The plurality of shafts 173 pass through the outer wall of the rotating rod 170 and are fixedly connected to blades 171. A scraper 172 is movably connected between the shafts 173 passing through the ends of the blades 171 in the same row. A plurality of shafts 173 are located between the outer wall of the rotating rod 170 and the outer wall of the screw 164 and are movably connected to a pusher 174.

[0050] The pusher 174 includes a slider 1740, which is movably connected between the outer wall of the screw rod 164 and the inner wall of the rotating rod 170, a long rod 1741 is fixedly connected to the top of the slider 1740, a plurality of push rods 1742 are fixedly connected to the outer wall of the long rod 1741, and a plurality of shaft rods 173 are fixedly connected to the outer walls thereof with push plates 1743, and the plurality of push rods 1742 are respectively located under the plurality of push plates 1743;

[0051] Among them, a connecting rod is fixedly connected between the push rod 1742 and the push plate 1743. The working principle of the connecting rod is known to people in the field of technology. It is a mechanical element that connects two or more parts. Its working principle is to realize the function of the mechanical system by transmitting force and motion. In the connecting rod mechanism, one end of the connecting rod is connected to the push rod 1742, and the other end is connected to the push plate 1743. When the push rod 1742 moves, the connecting rod will transmit this motion to the push plate 1743, thereby realizing the function of the mechanical system; it is convenient to make the rotation of the push plate 1743 and the shaft 173 adjusted as the push rod 1742 moves up and down.

[0052] See also Figure 3-Figure 6 As shown, the motor output shaft drives the rotating rod 170 to rotate, drives the pusher 174 to rotate synchronously with the multiple shafts 173 and the blades 171, and stirs the slurry in the filter cartridge 160; when the blades 171 rotate at a high speed, centrifugal force is generated on the rotating slurry, causing the solid particles in the slurry to accumulate more tightly on the inner wall of the filter cartridge 160, thereby increasing the filtration area and improving the filtration effect; at the same time, under the action of centrifugal force, the slurry liquid is separated from the filter cartridge 160; when the multiple blades 171 rotate, the scraper 172 is also driven to rub and scrape the inner wall of the filter cartridge 160, and the slurry stuck on the inner wall of the filter cartridge 160 is scraped off, and the scraped slurry will hit the inner wall of the filter cartridge 160 again under the action of centrifugal force for secondary separation and dehydration;

[0053] Since smaller filter holes are more easily clogged by particles, if the stirring force of blade 171 is too great, particles in the slurry will accumulate quickly on the surface of the filter medium, increasing the risk of clogging; therefore, when adjusting the position of the holes on the screen cylinder 161 and the holes on the filter cylinder 160 relative to each other, the rotation of the screen cylinder 161 will drive the screw 164 to rotate, and the rotation of the screw 164 will drive the slider 1740 to move between the outer wall of the screw 164 and the inner wall of the rotating rod 170, and the slider 1740 will move upward, thereby driving the long rod 1741 and multiple push rods 1742 to move upward, so that the push rod 1742 pushes the push plate 1743 to move, so that the push plate 1743 drives the shaft 173 to rotate under the thrust of the push rod 1742, and the inclination angle of the blade 171 is adjusted by the rotation of the shaft 173;

[0054] When the filter holes are small, by adjusting the blades 171 to the horizontal state, the horizontal blades 171 will push the slurry to the surroundings when rotating and stirring, forming a radial flow field centered on the stirring shaft, which mainly pushes the material in the horizontal direction. The stirring force is relatively gentle, and the vertical impact force on the filter holes is small, which can keep the particles in a relatively stable suspension state in the slurry and reduce the rapid aggregation of particles to the filter holes.

[0055] When the filter holes are large, by adjusting the blade 171 to the longitudinal state, when the longitudinal blade 171 rotates, an axial centrifugal force will be generated, causing the material to flow in the vertical direction. This stirring method can effectively lift the material at the bottom to the upper part, promote the mixing of the material in the entire height direction of the filter barrel, improve the filtration efficiency, and at the same time break the stratification of the material in the vertical direction, so that particles of different densities can be better mixed.

[0056] In order to ensure the sealing of the centrifugal dehydration of the slurry and facilitate the taking and placing of the dehydrated slurry, a plurality of buckles 13 are fixedly connected between the barrel cover 12 and the outer wall of the barrel 11, a bottom block 130 and a top block 131 are fixedly connected to the outer wall of the barrel cover 12, the top block 131 is movably connected to the top of the bottom block 130, a hinge 132 is fixedly connected between the bottom block 130 and the top block 131, and a cylinder 133 is fixedly connected between the bottom of the bottom block 130 and the top of the bracket 1;

[0057] See also Figure 3 and Fig. 9As shown, the connection between the barrel cover 12 and the material barrel 11 is fixed by adjusting the buckle 13; the distance between the barrel cover 12 and the material barrel 11 can be conveniently adjusted by moving the piston rod of the cylinder 133 up and down; when the barrel cover 12 is lifted upward, the centrifugal assembly 17 is driven to move upward, thereby moving the centrifugal assembly 17 out of the separation assembly 16; at the same time, turning the barrel cover 12 will drive the hinge 132 to rotate, thereby driving the top block 131 to fold on the bottom block 130; in this way, the barrel cover 12 and the centrifugal assembly 17 can be turned over and separated from the material barrel 11, so as to facilitate the removal of the separation assembly 16 from the material barrel 11, so as to collect and reserve the dehydrated dipotassium hydrogen phosphate;

[0058] In addition, the material barrel 11 is divided into two parts, the upper part of the material barrel 11 is a cylindrical structure, and the lower part of the material barrel 11 is a conical structure; according to the conical structure of the lower part of the material barrel 11, the dehydrated liquid can be diverted; since the lower part of the material barrel 11 is a gradually shrinking conical design toward the discharge pipe 14, according to the continuity equation (flow rate = flow rate × flow area), when the liquid flows through the conical or gradually shrinking circular contraction section, the flow area gradually decreases, and in order to maintain a constant flow rate, the flow rate of the liquid will inevitably increase; in this way, the flow rate of the liquid entering the discharge pipe 14 is accelerated, and at the same time, the impact force of the liquid on the filter component 15 is increased, thereby improving the degree of filtration.

[0059] In summary, the working principle of this solution is as follows:

[0060] The potassium hydrogen phosphate slurry is transported into the separation assembly 16 through the feed pipe 120, the gear 163 is driven to rotate by the motor output shaft, the gear ring 162 is driven to rotate by the gear 163, and the screen drum 161 is driven to rotate inside the filter drum 160 through the gear ring 162, so that the holes on the screen drum 161 are aligned with the holes on the filter drum 160;

[0061] The motor output shaft drives the rotating rod 170 to rotate, driving the pusher 174, the multiple shafts 173, and the blades 171 to rotate synchronously, so as to stir the slurry in the filter cartridge 160; when the blades 171 rotate at a high speed, centrifugal force is generated on the rotating slurry, so that the solid particles in the slurry are more densely accumulated on the inner wall of the filter cartridge 160, thereby increasing the filtering area and improving the filtering effect; at the same time, under the action of the centrifugal force, the slurry liquid is separated from the filter cartridge 160;

[0062] When the multiple blades 171 rotate, they also drive the scraper 172 to rub and scrape the inner wall of the filter cartridge 160, so as to scrape off the slurry adhering to the inner wall of the filter cartridge 160. The scraped slurry will hit the inner wall of the filter cartridge 160 again under the action of centrifugal force, and perform secondary separation and dehydration.

[0063] While the screen drum 161 is rotated to adjust the size of the filter holes, the rotation of the screen drum 161 also drives the screw rod 164 to rotate, and the rotation of the screw rod 164 drives the slider 1740 to move between the outer wall of the screw rod 164 and the inner wall of the rotating rod 170, and the slider 1740 moves upward, thereby driving the long rod 1741 and multiple push rods 1742 to move upward, so that the push rod 1742 pushes the push plate 1743 to move, so that the push plate 1743 drives the shaft rod 173 to rotate under the thrust of the push rod 1742, and the inclination angle of the blade 171 is adjusted by the rotation of the shaft rod 173;

[0064] When it is necessary to centrifugally dehydrate and separate the high-concentration dipotassium hydrogen phosphate slurry, for the high-viscosity slurry, the filter mesh aperture can be appropriately selected to be slightly larger. The high-viscosity slurry has poor fluidity, and a smaller filter mesh aperture will further increase the filtration resistance and affect the dehydration efficiency; therefore, by aligning the holes on the screen cylinder 161 with the larger holes on the filter cylinder 160, the high-concentration dipotassium hydrogen phosphate slurry is filtered and separated; and the blades 171 are adjusted to a longitudinal state. When the longitudinal blades 171 rotate, an axial centrifugal force is generated to make the material flow in a vertical direction. This stirring method can effectively lift the material at the bottom to the upper part, promote the mixing of the material in the entire height direction of the filter barrel, improve the filtration efficiency, and at the same time break the stratification phenomenon of the material in the vertical direction, so that particles of different densities can be better mixed;

[0065] When it is necessary to centrifugally dehydrate and separate the low-concentration dipotassium hydrogen phosphate slurry, for the low-viscosity slurry, a filter with a relatively small aperture can be selected to improve the separation accuracy. Therefore, by aligning the holes on the screen cylinder 161 with the smaller holes on the filter cylinder 160, the low-concentration dipotassium hydrogen phosphate slurry is filtered and separated; and the blades 171 are adjusted to a horizontal state. When the horizontal blades 171 rotate and stir, the slurry is pushed to the surroundings to form a radial flow field centered on the stirring shaft, which mainly pushes the material in the horizontal direction. The stirring force is relatively gentle, and the vertical impact force on the filter holes is small, which can keep the particles in a relatively stable suspended state in the slurry and reduce the rapid aggregation of particles to the filter holes.

[0066] The liquid centrifuged from the slurry is poured from the barrel 11 into the discharge pipe 14, and pumped inside the discharge pipe 14 through the filter plate 150, and the distance between the filter plate 150 and the inner wall of the discharge pipe 14 is adjusted to facilitate the diversion of the liquid part of the slurry, and during the pulling and pulling process of the filter plate 150, its surface will scrape the surface of the blade 151, so as to facilitate the removal of the slurry blocked on the filter plate 150, and the support rod 153 is clamped between the support plate 152 and the filter plate 150, and the position of the support rod 153 is fixed by the nut 154, so as to fix the position of the filter plate 150, and the liquid is subjected to secondary multi-stage filtration through the mesh holes on the multiple filter plates 150, and the flow direction of the liquid is diverted at the same time, so as to increase the contact time between the liquid and the filter plate 150 and improve the dehydration fineness of the slurry.

[0067] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A centrifugal dehydration device for producing slurry for dipotassium hydrogen phosphate, comprising a support (1), characterized in that: A material barrel (11) is fixedly connected inside the bracket (1), a barrel cover (12) is movably connected to the top of the material barrel (11), and a material discharge pipe (120) is fixedly connected to the top of the barrel cover (12); The material barrel (11) is movably connected to a separation component (16), the interior of the barrel cover (12) and the interior of the separation component (16) are movably connected to a centrifugal component (17), the bottom of the material barrel (11) is fixedly connected to a discharge pipe (14), and the interior of the discharge pipe (14) is movably connected to a filter component (15); The centrifugal component (17) is used to drive the slurry to be centrifugally dehydrated inside the separation component (16), and at the same time, scrape off the slurry sticking to the inner wall of the separation component (16) and perform secondary dehydration. The separation component (16) is used to discharge liquid in the slurry and adjust the size of the separation holes according to the concentration of the slurry. When adjusting the hole size, the stirring softness of the centrifugal component (17) is adjusted. The separation assembly (16) comprises a filter cartridge (160), the filter cartridge (160) being movably connected to the inside of the material barrel (11), a screen cartridge (161) being movably connected to the inside of the filter cartridge (160), a gear ring (162) being fixedly connected to the outer wall of the screen cartridge (161) near the top, a gear (163) being movably connected to the outer wall of the gear ring (162), the gear ring (162) and the gear (163) being both movably connected to the inside of the filter cartridge (160), a screw (164) being fixedly connected to the center of the inner bottom of the screen cartridge (161), the screw (164) passing through the outer wall of the filter cartridge (160) and being movably connected to the inside of the barrel cover (12) with a centrifugal assembly (17); The centrifugal assembly (17) comprises a rotating rod (170), the rotating rod (170) being movably connected to the inside of the barrel cover (12), a plurality of shaft rods (173) being movably connected to the inside of the rotating rod (170), a plurality of shaft rods (173) passing through the outer wall of the rotating rod (170) being fixedly connected to blades (171), a plurality of shaft rods (173) passing through the ends of the blades (171) in the same row being movably connected to scrapers (172), and a plurality of shaft rods (173) being located between the outer wall of the rotating rod (170) and the outer wall of the screw rod (164) being movably connected to pushers (174); The pushing member (174) includes a slider (1740), and the slider (1740) is movably connected between the outer wall of the screw rod (164) and the inner wall of the rotating rod (170). A long rod (1741) is fixedly connected to the top of the slider (1740), and a plurality of push rods (1742) are fixedly connected to the outer wall of the long rod (1741). The outer walls of the plurality of shaft rods (173) are all fixedly connected to push plates (1743), and the plurality of push rods (1742) are respectively located under the plurality of push plates (1743).

2. The centrifugal dehydration device for producing slurry for dipotassium hydrogen phosphate according to claim 1, characterized in that: A plurality of buckles (13) are fixedly connected between the barrel cover (12) and the outer wall of the barrel (11); a bottom block (130) and a top block (131) are fixedly connected to the outer wall of the barrel cover (12); the top block (131) is movably connected to the top of the bottom block (130); a hinge (132) is fixedly connected between the bottom block (130) and the top block (131); and a cylinder (133) is fixedly connected between the bottom of the bottom block (130) and the top of the bracket (1).

3. The centrifugal dehydration device for producing slurry for dipotassium hydrogen phosphate according to claim 1, characterized in that: The filter assembly (15) comprises a filter plate (150), a plurality of filter plates (150) are movably connected inside the discharge pipe (14), a blade (151) is fixedly connected to the inner wall of the discharge pipe (14) near the top of the filter plate (150), a support plate (152) is fixedly connected to the outer wall of the discharge pipe (14), a support rod (153) is movably connected between the inside of the support plate (152) and the inside of the filter plate (150) passing through the discharge pipe (14), and a nut (154) is movably connected to the support rod (153) passing through the outer wall of the filter plate (150).

4. The centrifugal dehydration device for producing slurry for dipotassium hydrogen phosphate according to claim 1, characterized in that: The material barrel (11) is divided into two parts, the upper part of the material barrel (11) is a cylindrical structure, and the lower part of the material barrel (11) is a conical structure.

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