Phosphogypsum washing equipment

Abstract

The application relates to a phosphogypsum washing device and belongs to the technical field of the phosphogypsum washing device. The device comprises a device main body, a washing pool, a phosphogypsum collecting pool and a waste collecting pool. A stirring assembly, a scraping assembly for scraping dross into the waste collecting pool and a phosphogypsum collecting assembly for collecting phosphogypsum into the phosphogypsum collecting pool are arranged in the washing pool. A feeding port is arranged on the washing pool. A baffle is arranged on the side wall of the washing pool near the waste collecting pool in a lifting mode. The end side of the baffle away from the bottom wall of the washing pool is arranged to be lower than the liquid surface. The scraping assembly comprises a connecting block slidingly arranged on the washing pool, a scraper rotatingly arranged on the connecting block, a driving piece for uniformly slidingly driving the connecting block and an adjusting piece for rotatingly adjusting the scraper. The scraper extends into the liquid surface, and the side of the scraper near the waste collecting pool is movably attached to the liquid surface. The rotating direction of the scraper is perpendicular to the sliding direction of the connecting block. The application has the effect of helping to adjust the depth of the scraper extending into the washing pool according to different washing amounts.

Description

Technical Field

[0001] The present application relates to the technical field of phosphogypsum washing, and in particular to a phosphogypsum washing device. Background Art

[0002] As a major agricultural producer, my country has always considered agriculture a key indicator of its economy. With the rapid development of agriculture, phosphate fertilizer, an essential nutrient for crop growth, has also seen rapid growth. However, during the production of phosphate fertilizer, phosphogypsum, a byproduct, is emitted annually, reaching 50 million tons. However, the utilization rate of phosphogypsum is less than 5%. This phosphogypsum discharge not only occupies significant land and pollutes the environment, but also creates significant burdens for phosphate fertilizer companies. The effective utilization of phosphogypsum as a resource has become a key factor in the healthy and sustainable development of the phosphate fertilizer industry.

[0003] At present, in the process of utilizing phosphogypsum, technicians often use water washing equipment to wash phosphogypsum to remove organic impurities in the phosphogypsum. Common water washing equipment often includes a water washing tank, a paste collecting tank and a waste collecting tank located on one side of the water washing tank. The water washing tank is equipped with a stirring component for stirring the phosphogypsum, a paste extraction component for extracting the phosphogypsum into the paste collecting tank, and a scraper for removing suspended organic impurities. The scraper is vertically extended into the water washing tank and is arranged to slide back and forth in the water washing tank. The sliding direction of the scraper is 1 / 4 of the direction of the scraper. Consistent with / opposite to the direction of the water washing tank toward the waste collecting tank; when washing the phosphogypsum, the technicians pour the phosphogypsum into the water washing tank and add water into the water washing tank. The stirring component is set to stir the phosphogypsum mixture evenly and let it stand to allow organic impurities and other scum to float on the surface. Then the technicians use a sliding scraper to remove the organic scum on the surface of the phosphogypsum, so that the organic scum enters the waste collecting tank for collection. Then the extraction component extracts the phosphogypsum after the scum is removed into the paste collecting tank for collection.

[0004] Regarding the above-mentioned related technologies, when washing phosphogypsum, the amount of water to be added is preliminarily determined based on the impurity content of the phosphogypsum, and the depth of the scraper inserted into the washing tank is fixed. When the amount of water added is large, the scraper is likely to scrape out part of the phosphogypsum mixture when scraping off the scum, thereby reducing the recovery rate of the phosphogypsum; when the amount of water added is relatively small, the scraper is not easy to completely scrape out the scum, thereby reducing the washing efficiency of the phosphogypsum. Summary of the Invention

[0005] In order to help adjust the depth of the scraper extending into the washing tank according to different water washing amounts, thereby improving the recovery rate and water washing efficiency of phosphogypsum, the present application provides a phosphogypsum water washing equipment.

[0006] The present application provides a phosphogypsum washing equipment adopting the following technical solution:

[0007] A phosphogypsum water washing equipment comprises an equipment main body, a water washing tank arranged on the main body, a paste collecting tank and a waste collecting tank arranged on one side of the water washing tank, the water washing tank is provided with a stirring assembly, a scraping assembly for scraping scum into the waste collecting tank and a paste extracting assembly for extracting phosphogypsum into the paste collecting tank, the water washing tank is provided with a feed inlet, the side wall of the water washing tank close to the waste collecting tank is provided with a lifting baffle, the end side of the baffle away from the bottom wall of the water washing tank is movably arranged below the liquid surface; the scraping assembly comprises a connecting block slidably arranged on the water washing tank, a scraper rotatably arranged on the connecting block, a driving member for driving the connecting block to slide at a uniform speed and an adjusting member for rotationally adjusting the scraper, the scraper extends into the liquid surface and the side of the scraper close to the waste collecting tank is movably engaged with the liquid surface, and the rotation direction of the scraper is perpendicular to the sliding direction of the connecting block.

[0008] By adopting the above technical solution, since the present application uses phosphogypsum as a building material, when washing the phosphogypsum, it is only necessary to remove the organic impurities floating on the surface of the mixed liquid, and some impurities such as carbon elemental are used as internal combustion agents during the subsequent calcination of the phosphogypsum, thereby improving the uniform heating of the phosphogypsum during the subsequent calcination; when washing the phosphogypsum, the technicians pour the phosphogypsum into the washing tank through the feed port and add clean water to the washing tank, and mix and stir the phosphogypsum and water through the provided stirring component, so that the organic impurities float on the upper layer of the mixed liquid in the washing tank. After standing, the mixed liquid is stratified, the density of the phosphogypsum mixed liquid in the bottom layer is greater than the density of water, and the density of the organic impurities floating on the upper layer is less than the density of water.

[0009] During scraping, technicians drive the connecting block and the scraper to slide at a constant speed through the driving member. When the driving member drives the connecting block and the scraper to scrape the scum, the resistance of liquids of different densities to the scraper is inconsistent. The bottom phosphogypsum mixture has a greater resistance to the scraper, and the top organic suspension has a smaller resistance to the scraper, thereby causing the scraper to tilt until the end of the scraper close to the bottom wall of the washing tank is located at the mixed liquid stratification. At this time, the resistance of the mixed liquid to the scraper remains consistent. Since the scraper keeps sliding at a constant speed, the angle of the scraper is not easy to change. By fixing the rotation angle of the scraper through the adjusting member, all organic impurities in the mixed liquid can be scraped out, thereby improving the efficiency of removing organic impurities from the phosphogypsum mixture, and it is not easy to scrape the mixed liquid mixed with phosphogypsum, thereby improving the recycling efficiency of phosphogypsum.

[0010] When the scraper scrapes off the scum, the baffle drops, allowing the scum to smoothly flow from the water washing tank into the waste collecting tank for collection. When the scum removal operation is not being performed, the baffle rises, and at this time the water in the water washing tank is not easy to enter the waste collecting tank, thereby improving the utilization rate of water resources.

[0011] Optionally, an abutment block is provided on the side wall of the water washing tank close to the waste collecting tank, and the abutment block is movably pressed against the side of the scraper away from the liquid surface.

[0012] By adopting the above technical solution, when the scraper scrapes the scum to the side close to the waste collection tank, the abutment block is set to press the scraper tightly. At this time, the scraper is adjusted to vertical, so as to more thoroughly scrape the organic impurities from the water washing tank to the waste collection tank, thereby improving the scraping efficiency of the organic impurities.

[0013] Optionally, the adjusting member includes a float ball provided in the water washing tank and a power member provided on the connecting block and connected to one end of the scraper, the density of the float ball is greater than the density of the slag and less than the density of the phosphogypsum mixture, a liquid level sensor is provided in the float ball, and a liquid level receiver for receiving the liquid level sensor signal is provided on the side of the scraper close to the bottom wall of the water washing tank, and the power member, liquid level sensor and liquid level receiver are electrically connected.

[0014] By adopting the above technical solution, after the mixed liquid is stirred and allowed to stand, the float ball is located between the phosphogypsum mixed liquid and the organic impurity suspension. At this time, the liquid level sensor on the float ball sends a signal, and the power component drives the scraper to rotate until the liquid level receiver at one end of the scraper extending into the liquid surface receives the liquid level signal. At this time, the end of the scraper extending into the liquid surface is stably located at the boundary between the phosphogypsum mixed liquid and the organic impurity suspension, thereby achieving stable removal of organic impurities with high removal efficiency.

[0015] Optionally, a buffering member is further provided at the other end of the scraper away from the power member for keeping the scraper relatively stable during the scraping process.

[0016] By adopting the above technical solution, the provided buffer member further improves the stability of the scraper angle when the connecting block drives the scraper to slide.

[0017] Optionally, a buffer cavity is provided in the connecting block, one end of the scraper extends into the buffer cavity, and one end of the scraper is fixedly connected to multiple groups of buffer plates, the buffer cavity is filled with buffer solution, and the buffer plate is provided with buffer holes for the buffer solution to flow through.

[0018] By adopting the above technical solution, during the process of the scraper sliding to scrape off the organic scum, since buffer oil is provided in the buffer chamber, when the water flow impacts the scraper to drive the scraper to rotate, the buffer oil flows from the buffer hole. Since there is only one buffer hole, the buffer plate is not easy to rotate, and the scraper is not easy to rotate, so that the angle of the scraper is fixed, reducing the loss caused by the power component serving as both a power source and a fixing component of the scraper, thereby improving the service life of the power component and at the same time improving the stability of the fixed rotation angle in the scraper.

[0019] Optionally, the abutting block is rotationally connected with a cleaning plate away from one side of the waste collecting pool, the cleaning plate is movably attached to the side of the scraping plate close to the waste collecting pool, and the scraping plate is further provided with a limiting structure for limiting the rotation angle of the cleaning plate.

[0020] By adopting the above technical scheme, when the scraping plate scrapes the organic impurity scum, the rotationally arranged cleaning plate is in contact with the scraping plate and is rotationally attached to the scraping plate, thereby scraping the organic impurity scum adhered to the scraping plate, and reducing the problem that the organic impurity adhered to the scraping plate reenters the washing pool to affect the phosphogypsum mixed solution in the washing pool.

[0021] Optionally, the stirring assembly comprises an adjusting block slidingly arranged in the washing pool, a stirring rod rotationally arranged on the adjusting block, and a sliding member for slidingly adjusting the adjusting block, and the sliding direction of the adjusting block is perpendicular to the sliding direction of the connecting block.

[0022] By adopting the above technical scheme, when the technical personnel stir the phosphogypsum mixed solution, the phosphogypsum is stirred and mixed by the rotation of the stirring rod, and then the adjusting block is driven to slide by the sliding member, thereby driving the stirring rod to mix and stir the phosphogypsum mixed solution in the entire washing pool, and improving the uniformity of the mixing and stirring of the phosphogypsum.

[0023] Optionally, the paste extracting assembly comprises a paste extracting pipe and a negative pressure member for generating negative pressure in the paste extracting pipe, one end of the paste extracting pipe extends into the bottom of the washing pool and the other end is in communication with the paste collecting pool, one end of the paste extracting pipe is movably arranged, and the end of the paste extracting pipe in the washing pool is movably arranged and moves synchronously with the adjusting block.

[0024] By adopting the above technical scheme, after the floating scum is removed, the technical personnel generate negative pressure in the paste extracting pipe by the negative pressure member, thereby extracting the phosphogypsum into the paste collecting pool, and since the end of the paste extracting pipe in the washing pool is movably arranged, the end of the paste extracting pipe in the washing pool moves simultaneously when the adjusting block and the stirring rod slide, thereby extracting the phosphogypsum in the entire washing pool, thereby achieving the extraction and treatment of the phosphogypsum in the washing pool, and the operation is simple.

[0025] Optionally, the inner bottom wall of the washing pool is obliquely arranged, and the paste extracting assembly comprises an obliquely arranged paste extracting rod, the paste extracting rod is rotationally arranged in the washing pool, one end of the paste extracting rod extends into the washing pool, and the other end extends into the paste collecting pool, the paste extracting rod is annularly provided with a paste extracting blade, and the paste extracting blade is helically arranged on the paste extracting rod.

[0026] By adopting the above technical scheme, when it is necessary to extract the phosphogypsum into the paste collecting pool, the paste extracting rod rotates to drive the paste extracting blade to rotate, and since the paste extracting blade is helical, the phosphogypsum in the washing pool is extracted into the paste collecting pool for collection for subsequent use.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. By rotating the scraper and adjusting the angle of rotation of the scraper, the scraper can be rotated to adjust the depth of the scraper's scraping of the foam, thereby further improving the recovery rate of phosphogypsum and the efficiency of water washing;

[0029] 2. The scraper is pressed against the abutment block so that the scraper rotates vertically when scraping close to the waste collection tank, thereby effectively scraping off the foam;

[0030] 3. By setting the buffer, the stability of the scraper rotation angle is improved, and the loss of the power component as a buffer is reduced, thereby increasing the service life of the power component. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of a phosphogypsum washing device according to an embodiment of the present application;

[0032] Figure 2 It is a schematic diagram of the connection structure of the water washing tank and the scraper;

[0033] Figure 3 This is a schematic diagram of the connection structure of the washing tank and the scraper from another perspective;

[0034] Figure 4 yes Figure 3 A partial enlarged schematic diagram of point B in the middle;

[0035] Figure 5 yes Figure 3 A partial enlarged schematic diagram of point A in the middle;

[0036] Figure 6 This is a schematic diagram of the connection structure of the cream extraction component in Example 2 of the present application;

[0037] Figure 7 This is a schematic diagram of the connection structure of the cream extraction rod and the cream extraction blade in Example 2 of the present application.

[0038] Reference signs: 1, washing pool; 11, feeding port; 12, abutting block; 13, cleaning plate; 14, torsional spring; 15, partition plate; 2, paste collecting pool; 21, filtering hole; 22, auxiliary plate; 23, vibration motor; 3, waste collecting pool; 31, baffle; 32, driving rack; 33, driven rack; 34, driving gear; 4, clean water pool; 5, stirring assembly; 51, stirring rod; 52, adjusting block; 53, sliding piece; 531, adjusting screw rod; 532, adjusting motor; 533, limiting rod; 54, stirring motor; 55, auxiliary blade; 6, scraping assembly; 61, connecting block; 62, scraping plate; 63, driving piece; 631, electric push rod; 64, adjusting piece; 641, rotating motor; 642, float ball; 643, liquid level sensor; 644, liquid level receiver; 65, buffer piece; 651, buffer cavity; 652, buffer plate; 653, buffer hole; 7, paste extracting assembly; 71, paste extracting pipe; 711, paste outlet pipe; 72, negative pressure piece; 721, paste extracting pump; 73, paste extracting rod; 74, paste extracting blade; 75, sleeve; 8, circulating assembly; 81, circulating pump; 82, circulating water pipe; 83, water outlet pipe; 84, electromagnetic valve; 85, water inlet pipe; 86, spray head. DETAILED DESCRIPTION

[0039] The following will be described in detail in combination with the accompanying drawings. Figure 1-7 The present application is further described in detail.

[0040] The present application discloses a phosphogypsum washing equipment.

[0041] Embodiment 1

[0042] Referring to Figure 1 The phosphogypsum washing equipment comprises a washing pool 1, a waste collecting pool 3 and a clean water pool 4 arranged in sequence, further comprises a paste collecting pool 2, a feeding port 11 is arranged on the side of the washing pool 1 away from the waste collecting pool 3, and a spray head 86 is arranged on the side of the washing pool 1 away from the waste collecting pool 3, the spray head 86 is connected with a water source and faces the washing pool 1, a baffle 31 is arranged on the side wall of the waste collecting pool 3 close to the washing pool 1, and the height of the baffle 31 is lower than the liquid level.

[0043] Referring to Figure 1 , Figure 2 and Figure 3The water washing tank 1 is provided with a stirring component 5 for stirring the phosphogypsum, a scraping component 6 for scraping off the scum on the liquid surface, and a paste collecting component for pumping the phosphogypsum into the paste collecting tank 2; when the technicians wash the phosphogypsum with water, the technicians pour the phosphogypsum into the water washing tank 1, spray water into the water washing tank 1 through the nozzle 86 to disperse the phosphogypsum, and then fully stir and mix the phosphogypsum and water through the stirring component 5, so that the organic impurities contained in the phosphogypsum float on the liquid surface, and then scrape the scum into the waste collecting tank 3 through the provided scraping component 6, and then the phosphogypsum after removing the impurities is pumped into the paste collecting tank 2 for storage through the paste pumping component 7.

[0044] Reference Figure 2 and Figure 3 The scraping assembly 6 includes two connecting blocks 61 slidably arranged on the opposite side walls of the water washing tank 1, a scraper 62 arranged between the two connecting blocks 61, and a driving member 63 for uniformly slidingly driving the connecting block 61. In this application, the driving member 63 is an electric push rod 631, which is fixed to the side wall of the water washing tank 1 and fixedly connected to one connecting block 61. The sliding direction of the two connecting blocks 61 is consistent with the length direction of the water washing tank 1. The scraper 62 is rotatably connected between the two connecting blocks 61. The rotation axis of the scraper 62 is consistent with the width direction of the water washing tank 1. One end of the scraper 62 close to the bottom wall of the water washing tank 1 is movably extended into the liquid surface;

[0045] After being stirred and left to stand, the mixed liquid will be stratified. The density of the bottom phosphogypsum mixed liquid is greater than that of water, and the density of the organic impurities floating on the upper layer is less than that of water. The technician drives the connecting block 61 and the scraper 62 to slide at a uniform speed through the electric push rod 631. When the electric push rod 631 drives the connecting block 61 and the scraper 62 to scrape off the scum, the resistance of liquids of different densities to the scraper 62 is inconsistent. The resistance of the bottom phosphogypsum mixed liquid to the scraper 62 is greater, and the resistance of the top organic suspension to the scraper 62 is less, causing the scraper 62 to tilt until one end of the scraper 62 close to the bottom wall of the washing tank 1 is located at the mixed liquid stratification. At this time, the resistance of the mixed liquid to the scraper 62 remains consistent. Since the scraper 62 keeps sliding at a uniform speed, the angle of the scraper 62 is not easy to change.

[0046] Reference Figure 1 and Figure 2The cleaning plate 13 is movably fitted with the scraper 62 , and when the scraper 62 approaches the abutment block 12 , the abutment block 12 presses the scraper 62 tightly to make the scraper 62 vertical, thereby scraping the scum into the waste collection pool 3 for collection. At the same time, when the cleaning plate 13 is pressed against the scraper 62 , the scum on the scraper 62 is scraped upward, thereby cleaning the scum on the scraper 62 and reducing the scum from being immersed in the washing pool 1 again, thereby improving the washing efficiency of the phosphogypsum.

[0047] Reference Figure 3 and Figure 5 Since the adjustment of the scraper 62 by relying solely on the different resistances of the mixed liquids of different densities on the scraper 62 often results in deviations, in order to more accurately adjust and fix the rotation angle of the scraper 62, the scraping assembly 6 further includes an adjusting member 64 for rotating and adjusting the scraper 62. The adjusting member 64 includes a rotating motor 641. The rotating motor 641 is fixed to the connecting block 61 away from the electric push rod 631, and the output end of the rotating motor 641 is fixedly connected to the rotating shaft of the scraper 62.

[0048] The inner wall of the water washing tank 1 is also fixedly connected with a partition 15, and the partition 15 and the inner wall of the water washing tank 1 are enclosed to form a test cavity. The partition 15 is provided with a plurality of water-permeable holes. The adjusting member 64 also includes a float ball 642 provided in the test cavity. The density of the float ball 642 is greater than the density of water and less than the density of the phosphogypsum mixture. The float ball 642 is provided with a liquid level sensor 643. The end side of the scraper 62 is provided with a liquid level receiver 644. The liquid level receiver 644 is used to receive the signal of the liquid level sensor 643, and the liquid level receiver 644 and the liquid level sensor The device 643 is electrically connected to the rotating motor 641; after the mixed liquid is stirred and allowed to stand, the float ball 642 is located between the phosphogypsum mixed liquid and the organic impurity suspension. At this time, the liquid level sensor 643 on the float ball 642 sends a signal, and the power component drives the scraper 62 to rotate until the liquid level receiver 644 at one end of the scraper 62 extending into the liquid surface also receives the liquid level signal. At this time, the end of the scraper 62 extending into the liquid surface is stably located at the boundary between the phosphogypsum mixed liquid and the organic impurity suspension, thereby achieving stable removal of organic impurities with high removal efficiency.

[0049] Since the rotating motor 641 at this time serves as the power source for rotating and adjusting the scraper 62 and also plays a certain role in fixing the angle of the scraper 62, and the rotation of the scraper 62 needs to be further limited when the scraper 62 is scraping, a buffer part 65 is provided at the end of the scraper 62 away from the rotating motor 641. The buffer part 65 includes a buffer cavity provided in the connecting block 61, and a buffer plate 652 is fixedly connected to the rotating shaft of the scraper 62. A buffer hole 653 is provided on the buffer plate 652, and buffer oil is provided in the buffer cavity 651; when the scraper 62 rotates, since the buffer oil can only pass through the buffer hole 653, when the scraper 62 rotates, the buffer hole 653 is small, and thus the buffer plate 652 is blocked, thereby fixing the rotation angle of the scraper 62, reducing the torque between the scraper 62 and the rotating motor 641, and thus improving the service life of the rotating motor 641.

[0050] Reference Figure 3 The stirring assembly 5 includes an adjusting block 52 slidably arranged in the water washing tank 1, a stirring rod 51 arranged on the adjusting block 52, and a sliding member 53 for driving the adjusting block 52 to slide. The sliding direction of the adjusting block 52 is consistent with the width direction of the water washing tank 1. The stirring rod 51 is rotatably arranged on the adjusting block 52, and the rotation axis of the stirring rod 51 is vertical. A stirring motor 54 is also fixedly connected to the adjusting block 52. The output end of the stirring motor 54 passes through the adjusting block 52 and is fixedly connected to the stirring rod 51. In order to expand the stirring range of the stirring rod 51, a plurality of groups of support rods are fixedly connected to the stirring rod 51. The support rods are arranged horizontally. A plurality of groups of auxiliary blades 55 are rotatably connected to the support rods. The rotation axis of the auxiliary blades 55 is vertically consistent with the rotation axis of the stirring rod 51.

[0051] The sliding member 53 also includes an adjusting screw 531 that penetrates and rotates in the water washing tank 1. The adjusting block 52 is threadedly assembled on the adjusting screw 531. The rotation axis of the adjusting screw 531 is consistent with the sliding direction of the adjusting block 52. An adjusting motor 532 is fixedly connected to the side wall of the water washing tank 1. The output end of the adjusting motor 532 penetrates the side wall of the water washing tank 1 and is fixedly connected to the adjusting screw 531. A limiting rod 533 is fixedly connected to the inner side wall of the water washing tank 1. The limiting rod 533 is arranged parallel to the adjusting screw 531, and the limiting rod 533 penetrates the adjusting block 52 and is slidably adapted to the adjusting block 52.

[0052] When the phosphogypsum mixture in the water washing tank 1 is stirred and mixed, the stirring motor 54 drives the stirring rod 51 to rotate, and drives the support rod to rotate to stir and mix the phosphogypsum. Since the auxiliary blade 55 is also connected to the support rod, when the support rod rotates, the auxiliary blade 55 rotates under the action of the mixed liquid, generating turbulence, thereby further improving the stirring efficiency and uniformity of the phosphogypsum; at the same time, the adjustment motor 532 rotates to drive the adjusting screw 531 to rotate, so that the adjustment block 52 slides along the width direction of the water washing tank 1, driving the stirring rod 51 to rotate, so that the stirring rod 51 and the auxiliary blade 55 stir the water washing tank 1 over a large area.

[0053] Reference Figure 3 and Figure 4 The waste collection tank 3 is fixedly connected to the side of the water washing tank 1 away from the feed port 11, and a baffle 31 is installed on the side wall of the waste collection tank 3 close to the water washing tank 1 in a lifting manner. The height of the baffle 31 is arranged to be lower than the height of the liquid level. When the phosphogypsum is stirred, the height of the baffle 31 needs to be higher than the height of the liquid level, and when the scum is scraped off, the baffle 31 needs to be lowered to be lower than the height of the liquid level. Therefore, in order to facilitate the adjustment of the baffle 31, a driving rack 32 is fixedly connected to the side wall of the baffle 31. The driving rack 32 is arranged vertically, and a driving gear 34 is rotatably connected to the side wall of the water washing tank 1. The driving rack 32 is meshed with the driving gear 34. A driven rack 33 is slidingly provided on the side wall of the water washing tank 1. The driven rack 33 is arranged horizontally and meshed with the driving gear 34. The driven rack 33 is fixedly connected to one side of the connecting block 61.

[0054] When the electric push rod 631 drives the connecting block 61 to slide and thus drives the scraper 62 to scrape, the driven rack 33 slides and drives the driving gear 34 to rotate, thereby driving the driving rack 32 to slide, and the driving rack 32 slides up and down, driving the baffle 31 to rise and fall. When the scraper 62 scrapes toward the side close to the waste collecting tank 3, the baffle 31 drops accordingly, thereby achieving better scraping of the scum, and when the scraper 62 moves toward the side away from the waste collecting tank 3, the baffle 31 rises accordingly, thereby reducing the phosphogypsum mixture from entering the waste collecting tank 3 and improving the recovery rate of the phosphogypsum.

[0055] Reference Figure 3 and Figure 4, the cream extraction component 7 includes a cream extraction tube 71 provided in the water washing pool 1 and a negative pressure member 72 for generating negative pressure in the cream extraction tube 71. In this application, the negative pressure member 72 is a cream extraction pump 721. One end of the cream extraction tube 71 passes through the side wall of the water washing pool 1 and is movably provided in the water washing pool 1. The end of the cream extraction tube 71 extending into the water washing pool 1 is a bellows. The adjusting block 52 is fixedly connected to a mounting bracket. One end of the cream extraction tube 71 is fixedly connected to the mounting bracket, and the other end is fixedly connected to a cream outlet pipe 711. The cream outlet pipe 711 is connected to the cream collecting pool 2. After the foam is removed, the technicians need to pump the phosphogypsum in the water washing tank 1 into the paste collecting tank 2 for collection for subsequent recycling. At this time, in order to improve the extraction efficiency of the phosphogypsum, the phosphogypsum and water still need to be mixed and stirred, and then the phosphogypsum is pumped into the paste collecting tank 2 for collection through the paste pump 721. When the stirring rod 51 slides, the paste pump 71 moves accordingly, and is driven simultaneously by a power source to save energy. At the same time, the paste pump 71 can extract a large range of phosphogypsum in the water washing tank 1, and the operation is simple.

[0056] In order to facilitate the recycling of water in the entire washing tank 1, a circulation component 8 is also provided on the clean water tank 4. The circulation component 8 includes a circulation pump 81. The circulation pump 81 is fixedly connected to the outer wall of the clean water tank 4. The inner wall of the clean water tank 4 close to the washing tank 1 is fixedly connected with a circulation water pipe 82. The end side of the circulation water pipe 82 away from the washing tank 1 is fixedly connected with a solenoid valve 84. The solenoid valve 84 controls the opening and closing of the circulation water pipe 82. The circulation pump 81 is fixedly connected with a water outlet pipe 83, and the end of the circulation water pump away from the water outlet pipe 83 is fixedly connected with a water inlet pipe 85. The water inlet pipe 85 is fixedly connected with two groups of nozzles 86. The two nozzles 86 are fixedly connected. The groups of nozzles 86 are arranged at intervals along the width direction of the water washing tank 1, and each group of nozzles 86 includes two nozzles 86, one nozzle 86 is located above the water washing tank 1 and arranged toward the water washing tank 1, and the other nozzle 86 is located in the water washing tank 1 and arranged toward the waste collecting tank 3, and the nozzles 86 and the outlet pipes 83 are all ball-hinged; after the phosphogypsum is poured into the water washing tank 1, the phosphogypsum is dispersed by the four groups of nozzles 86 to reduce the accumulation of the phosphogypsum, and at the same time, the nozzles 86 are set to flush toward the waste collecting tank 3, and the floating scum is urged toward the waste collecting tank 3, thereby further improving the cleaning efficiency of the scum.

[0057] After the phosphogypsum is pumped into the collecting pool 2, drainage operation is required to further reduce the moisture content of the phosphogypsum. The bottom and sides of the collecting pool 2 are densely covered with filter holes 21, and the bottom of the collecting pool 2 is fixedly connected with an auxiliary plate 22. The auxiliary plate 22 is arranged obliquely in the horizontal direction, and the bottom end of the auxiliary plate 22 extends into the clean water pool 4; when the phosphogypsum is pumped into the collecting pool 2, the moisture falls onto the auxiliary plate 22 through the filter holes 21, and then falls into the cleaning pool, and is then pumped into the clean water pool 4 through the circulation pump 81 for reuse; and in order to improve the drainage efficiency, a vibration motor 23 is fixedly connected to the outer wall of the collecting pool 2.

[0058] Since phosphogypsum is used as a building material in the present application, when washing the phosphogypsum, it is only necessary to remove the organic impurities floating on the surface of the mixed liquid. Since phosphogypsum is used as a building material in the present application, when washing the phosphogypsum, it is only necessary to remove the organic impurities floating on the surface of the mixed liquid. Some impurities such as carbon element are used as internal combustion agents during the subsequent calcination of the phosphogypsum, thereby improving the uniform heating of the phosphogypsum during the subsequent calcination.

[0059] Therefore, the implementation principle of the phosphogypsum washing equipment of the embodiment of the present application is as follows: the technician pours the phosphogypsum to be washed into the washing tank 1, and then sprays water into the tank through the nozzle 86 to disperse the phosphogypsum. At the same time, the stirring motor 54 is operated to stir and mix the phosphogypsum and water in the washing tank 1, so that the organic impurities in the phosphogypsum float on the water surface; and the motor 532 is adjusted to drive the stirring rod 51 to stir and disperse the water in the washing tank 1 on a large scale; after standing for a period of time, the phosphogypsum mixture is stratified and the organic impurities float on the surface of the mixture. At this time, the electric push rod 631 is provided to push the connecting block 61 to move at a uniform speed, driving the scraper 62 to move. The scraper 62 is subjected to different resistances from the mixed liquids of different densities, causing it to tilt, thereby scraping off the scum; at the same time, the technician can also control the rotation of the scraper 62 by rotating the motor 641 according to the position of the float ball 642 after standing, thereby fixing the rotation angle of the scraper 62 to achieve more accurate and stable scraping.

[0060] Example 2

[0061] Reference Figure 6 and Figure 7The difference between this embodiment and embodiment 1 is that the bottom side of the water washing tank 1 is arranged in an inclined shape, and the paste extraction component 7 includes an inclined paste extraction rod 73, which extends into the bottom of the water washing tank 1 and is rotatable. The rotation axis of the paste extraction rod 73 is consistent with the length direction of the paste extraction rod 73, and a paste extraction blade 74 is provided on the fixed ring of the paste extraction rod 73. The paste extraction blade 74 is spirally wound around the paste extraction rod 73, and a sleeve 75 is provided on the outer peripheral side of the paste extraction rod 73; when the phosphogypsum is extracted, the phosphogypsum is extracted into the paste collecting pool 2 by the spirally arranged paste extraction blade 74, and the spirally upwardly arranged paste extraction blade 74 enables the water to be automatically drained under the action of gravity, thereby simplifying the subsequent drainage operation of the phosphogypsum.

[0062] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A phosphogypsum washing device, comprising a device body, a water washing tank (1) provided on the body, a paste collecting tank (2), and a waste collecting tank (3) provided on one side of the water washing tank (1), wherein the water washing tank (1) is provided with a stirring component (5), a scraping component (6) for scraping scum into the waste collecting tank (3), and a paste pumping component (7) for pumping phosphogypsum into the paste collecting tank (2), characterized in that: The water washing tank (1) is provided with a feed inlet (11), and a baffle (31) is provided on the side wall of the water washing tank (1) close to the waste collecting tank (3) in a lifting manner, and the end side of the baffle (31) away from the inner bottom wall of the water washing tank (1) is arranged below the liquid surface; The scraping assembly (6) comprises a connecting block (61) slidably arranged on the water washing tank (1), a scraper (62) rotatably arranged on the connecting block (61), a driving member (63) for uniformly slidingly driving the connecting block (61), and an adjusting member (64) for rotationally adjusting the scraper (62), wherein the scraper (62) extends into the liquid surface and a side of the scraper (62) close to the waste collecting tank (3) is movably attached to the liquid surface, and the rotation direction of the scraper (62) is perpendicular to the sliding direction of the connecting block (61); A driving rack (32) is connected to the side wall of the baffle (31), the driving rack (32) is arranged vertically, and a driving gear (34) is rotatably connected to the side wall of the water washing tank (1), the driving rack (32) is meshed with the driving gear (34), and a driven rack (33) is slidably provided on the side wall of the water washing tank (1), the driven rack (33) is arranged horizontally, and the driven rack (33) is meshed with the driving gear (34), and the driven rack (33) is connected to one side of the connecting block (61); When the scraper (62) scrapes toward a side close to the waste collection tank (3), the baffle (31) descends; when the scraper (62) moves toward a side away from the waste collection tank (3), the baffle (31) ascends.

2. A phosphogypsum washing equipment according to claim 1, characterized in that: An abutment block (12) is provided on the side wall of the water washing tank (1) close to the waste collecting tank (3), and the abutment block (12) is movably pressed against the side of the scraper (62) away from the liquid surface.

3. The phosphogypsum washing equipment according to claim 1, characterized in that: The regulating member (64) includes a float ball (642) provided in the water washing tank (1) and a power member provided on the connecting block (61) and connected to one end of the scraper (62). The density of the float ball (642) is greater than the density of the scum and less than the density of the phosphogypsum mixture. A liquid level sensor (643) is provided in the float ball (642). A liquid level receiver (644) for receiving a signal from the liquid level sensor (643) is provided on a side of the scraper (62) close to the bottom wall of the water washing tank (1). The power member, the liquid level sensor (643) and the liquid level receiver (644) are electrically connected.

4. The phosphogypsum washing equipment according to claim 3, characterized in that: The other end of the scraper (62) away from the power member is further provided with a buffer member (65) for keeping the scraper (62) relatively stable during the scraping process.

5. The phosphogypsum washing equipment according to claim 4, characterized in that: A buffer cavity (651) is provided in the connecting block (61), one end of the scraper (62) extends into the buffer cavity (651), and one end of the scraper (62) is fixedly connected to a plurality of buffer plates (652), a buffer solution is contained in the buffer cavity (651), and a buffer hole (653) for the buffer solution to flow through is provided on the buffer plate (652).

6. The phosphogypsum washing equipment according to claim 1, characterized in that: The side of the baffle (31) away from the waste collection tank (3) is rotatably connected to a cleaning plate (13), the cleaning plate (13) and the side of the scraper (62) close to the waste collection tank (3) are movably fitted, and a limiting structure for limiting the rotation angle of the cleaning plate (13) is also provided on the baffle (31).

7. The phosphogypsum washing equipment according to claim 6, characterized in that: The stirring assembly (5) comprises an adjusting block (52) slidably arranged in the water washing tank (1), a stirring rod (51) rotatably arranged on the adjusting block (52), and a sliding member (53) for slidingly adjusting the adjusting block (52), wherein the sliding direction of the adjusting block (52) is perpendicular to the sliding direction of the connecting block (61).

8. The phosphogypsum washing equipment according to claim 7, characterized in that: The cream extraction assembly (7) comprises a cream extraction tube (71) and a negative pressure member (72) for generating negative pressure in the cream extraction tube (71); one end of the cream extraction tube (71) extends into the bottom of the water washing tank (1) and the other end is connected to the cream collecting tank (2); one end of the cream extraction tube (71) is movably arranged, and the end of the cream extraction tube (71) located in the water washing tank (1) is movably arranged and moves synchronously with the regulating block (52).

9. The phosphogypsum washing equipment according to claim 7, characterized in that: The inner bottom wall of the water washing pool (1) is arranged at an angle, and the cream extraction component (7) includes a cream extraction rod (73) arranged at an angle, the cream extraction rod (73) is rotatably arranged in the water washing pool (1), one end of the cream extraction rod (73) extends into the water washing pool (1), and the other end extends into the cream collecting pool (2), and a cream extraction blade (74) is provided on the cream extraction rod (73), and the cream extraction blade (74) is spirally arranged on the cream extraction rod (73).

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