Phosphoric acid concentration device and use method thereof

Abstract

The invention relates to a phosphoric acid concentration device and a using method thereof.The phosphoric acid concentration device comprises a containing barrel, a scraping plate, a connecting mechanism, a first locking block and a pushing mechanism, the containing barrel comprises a top, a bottom and a plurality of barrel bodies, the barrel bodies are vertically arranged at the bottom in the circumferential direction of the bottom, and the top is arranged at the end, away from the bottom, of the barrel body; the bucket bodies are arranged in a sliding mode in the radial direction of the bottom, the scraping plates correspond to the bucket bodies one to one, power pieces are arranged on the tops of the bucket bodies, the power pieces are provided with driving rods, the power pieces can drive the driving rods to move in the axial direction of the containing bucket, the power pieces can drive the scraping plates to move in the axial direction and can slide in the radial direction, and the pushing mechanism can push the scraping plates in the radial direction. The power piece can drive the first locking block to open or close the pushing mechanism through the connecting mechanism, the number of times of movement of the scraper in the axial direction corresponds to the number of times of opening the pushing mechanism by the first locking block, and the function of facilitating timely maintenance of workers is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of phosphoric acid concentration, and in particular to a phosphoric acid concentration device and a method for using the same. Background Art

[0002] In daily energy mining, phosphate rock is one of the most important mineral resources. When applied in industry, ordinary phosphoric acid is usually first extracted from phosphate rock, and then concentrated and refined from ordinary phosphoric acid to obtain industrial phosphoric acid.

[0003] At present, most phosphoric acid concentration equipment usually includes a barrel for containing concentrated acid and dilute phosphoric acid. A heating device is provided in the barrel to concentrate the dilute phosphoric acid by means of heating and evaporation. Since the dilute phosphoric acid contains other substances, there will be residues attached to the inner wall of the barrel after concentration. Therefore, after the phosphoric acid is processed, the barrel needs to be scrubbed and cleaned. Since the dilute phosphoric acid contains a small amount of corrosive substances such as sulfuric acid and fluorosilicic acid, the corrosion-resistant coating on the inner wall of the barrel is easily damaged when scrubbed for a long time, and it needs to be painted and repaired in time. However, since the barrel is closed, it is difficult for the staff to find and take care of it in time. Summary of the invention

[0004] In order to enable staff to perform maintenance in a timely manner, the present application provides a phosphoric acid concentration device and a method for using the same.

[0005] In a first aspect, the present application provides a phosphoric acid concentration device that adopts the following technical solution.

[0006] A phosphoric acid concentration device comprises a containing barrel, a scraper, a connecting mechanism, a first locking block and a pushing mechanism, wherein the containing barrel comprises a top, a bottom and a barrel body, the barrel body is vertically arranged at the bottom, there are a plurality of barrel bodies, and the plurality of barrel bodies are arranged circumferentially along the bottom, the top is arranged at one end of the barrel body away from the bottom, the barrel body is radially slidingly arranged along the bottom, there are a plurality of scrapers and they correspond to the barrel body one by one, a power member is arranged at the top, the power member is provided with a driving rod, the power member can drive the driving rod to move axially along the containing barrel, the power member can drive the scraper to move axially, the scraper can slide radially, the pushing mechanism can push the scraper radially, the first locking block is used to open or close the pushing mechanism, the scraper abuts against the barrel body, the power member can drive the first locking block to open or close the pushing mechanism through the connecting mechanism, and the number of axial movements of the scraper corresponds to the number of times the first locking block opens the pushing mechanism.

[0007] Optionally, the connecting mechanism includes a telescopic rod, a first connecting block and a first spring, a first sliding groove is opened on the inner wall of the scraper, one end of the telescopic rod is fixedly connected to the driving rod, the first connecting block is fixedly connected to an end of the telescopic rod away from the driving rod, the first connecting block is arranged in the first sliding groove along the axial sliding of the barrel, the first spring is arranged in the first sliding groove, one end of the first spring is fixedly connected to the inner wall of the first sliding groove, the other end of the first spring is fixedly connected to the first connecting block, the first locking block is arranged at the fixed end of the telescopic rod, and the telescopic rod can drive the first locking block to move along the axial direction of the barrel.

[0008] Optionally, the pushing mechanism includes a rod sleeve, a push rod and a second spring, one end of the rod sleeve is fixedly connected to the driving rod, the push rod is radially slidably inserted in the rod sleeve, the second spring is arranged between the rod sleeve and the push rod, one end of the second spring is fixedly connected to the rod sleeve, one end of the second spring is fixedly connected to the push rod, the push rod abuts against the scraper, the second spring can drive the push rod to slide and push the scraper, the push rod is provided with a locking hole, and there are a plurality of locking holes, and the plurality of locking holes are distributed on the push rod along the sliding direction of the push rod.

[0009] Optionally, a snap mechanism is provided on the outer wall of the driving rod, and the snap mechanism includes a connecting rod, a second locking block and a third spring, one end of the connecting rod is fixedly connected to the driving rod, the second locking block slides through the connecting rod along the sliding direction of the first locking block, the third spring is provided between the second locking block and the connecting rod, one end of the third spring is fixedly connected to the connecting rod, and the other end of the third spring is fixedly connected to the second locking block, the second locking block can be slidably inserted into or out of the locking hole, and the first locking block can slide to squeeze the second locking block out of the locking hole.

[0010] Optionally, the second locking block includes a vertical portion and an inclined portion, the inclined portion is arranged at an end of the vertical portion away from the connecting rod, and the first locking block pushes the second locking block to slide a distance equal to the length of the vertical portion.

[0011] Optionally, a second sliding groove is provided at the bottom, and the second sliding groove is provided along the sliding direction of the barrel body. A second connecting block is fixedly connected to one end of the barrel body toward the bottom. The second connecting block is slidably arranged in the second sliding groove. A fourth spring is arranged in the second sliding groove, and one end of the fourth spring is fixedly connected to the second sliding groove, and the other end of the fourth spring is fixedly connected to the second connecting block. The fourth spring can drive the barrel body to move toward the driving rod.

[0012] Optionally, the bottom is provided with a plurality of identification rods, which are distributed circumferentially along the bottom, one end of the identification rod is fixedly connected to the bottom, and the other end of the identification rod is fixedly connected to the top, a single identification rod is arranged between two of the barrel bodies, and the barrel bodies and the identification rods form the containing barrel, and the barrel body can slide to a state of being misaligned with the identification rod.

[0013] Optionally, the telescopic rod includes a fixed sleeve and a movable rod, one end of the fixed sleeve is connected to the driving rod, the movable rod is slidably inserted in the fixed sleeve along the sliding direction of the scraper, a fifth spring is arranged in the fixed sleeve, one end of the fifth spring is fixedly connected to the fixed sleeve, and the other end of the fifth spring is fixedly connected to the movable rod, and the fifth spring can drive the movable rod to slide toward the fixed sleeve.

[0014] Optionally, a third sliding groove is provided on the top, and the third sliding groove is provided along the sliding direction of the barrel body. A third connecting block is fixedly connected to one end of the barrel body toward the top. The third connecting block is slidably arranged in the third sliding groove. A sixth spring is arranged in the third sliding groove, and one end of the sixth spring is fixedly connected to the third sliding groove, and the other end of the sixth spring is fixedly connected to the third connecting block. The sixth spring can drive the barrel body to move toward the driving rod.

[0015] In a second aspect, the present application provides a method for using the above-mentioned phosphoric acid concentration device, using the following technical solution: S1: Start the power member to drive the scraper to slide to the bottom.

[0016] S2: Move the scraper from the bottom to the top.

[0017] S3: Observe the misalignment between the barrel body and the identification rod.

[0018] In summary, the present application includes at least one of the following beneficial effects: After the phosphoric acid device has finished working, the power part is started to make the scraper scrape from the bottom to the top to scrape off the impurities on the inner wall of the barrel. When the scraper encounters impurities, the friction force it receives increases, resulting in a movement, thereby driving the first locking block to open the pushing mechanism, and the pushing mechanism pushes the corresponding scraper toward the barrel body, thereby causing the barrel body to slide. As the number of scraper movements increases, the number of times the corresponding barrel body is scraped increases, and the corresponding barrel body moves outward. Compared with other barrels with smaller moving distances, it is convenient for the staff to promptly detect the barrel body that needs to be repaired, so that the staff can repair it in time.

[0019] Multiple scrapers correspond to multiple barrels, which makes it easy for workers to find the severely damaged barrel in time for emergency repairs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 It is a half-section view of the overall structure of this embodiment; Figure 3 for Figure 2 Enlargement of the middle A Figure 1 .

[0021] Explanation of the accompanying drawings: 1. holding barrel; 101. top; 102. bottom; 103. barrel body; 2. scraper; 3. connecting mechanism; 301. telescopic rod; 3011. fixing sleeve; 3012. moving rod; 302. first connecting block; 303. first spring; 4. pushing mechanism; 401. rod sleeve; 402. push rod; 403. second spring; 5. power part; 6. driving rod; 7. identification rod; 8. first slide groove; 9. first locking block; 10. locking hole; 11. snap mechanism; 1101. connecting rod; 1102. second locking block; 11021. vertical part; 11022. inclined part; 1103. third spring; 12. second slide groove; 13. second connecting block; 14. fourth spring; 15. third slide groove; 16. sixth spring; 17. third connecting block. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-3 The present application is further described with specific embodiments: First of all, it should be noted that in the description of this application, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and other directional words appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of this application; in addition, if the terms "first", "second", "third" and other numerical quantifiers appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", and "connected" appear, they should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, a limited connection such as an interference fit, a transition fit, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium; therefore, for ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0023] The embodiments of the present application disclose a phosphoric acid concentration device and a method for using the same.

[0024] A phosphoric acid concentration device, referring to Figure 1 , Figure 2 and Figure 3 , including a holding barrel 1, a scraper 2, a connecting mechanism 3, a first locking block 9 and a pushing mechanism 4. The holding barrel 1 is provided with an evaporating device for heating and evaporation. The holding barrel 1 is also provided with an inlet for adding dilute phosphoric acid and an outlet for discharging concentrated phosphoric acid. The main components of dilute phosphoric acid are phosphoric acid, sulfuric acid, and fluorosilicic acid. The holding barrel 1 includes a top 101, a bottom 102 and a barrel body 103. The barrel body 103 is vertically arranged at the bottom 102. There are four barrel bodies 103. The four barrel bodies 103 are arranged circumferentially along the bottom 102. The top 101 is arranged at the barrel body 103 is one end away from the bottom 102, the barrel body 103 is radially slidably arranged along the bottom 102, the edge of the scraper 2 is provided with a convex strip abutting against the inner wall of the barrel body 103, the convex strip is used to scrape off impurities, there are four scrapers 2 and they correspond to the barrel body 103 one by one, the top 101 is provided with a power piece 5, the power piece 5 is a cylinder, the cylinder body of the cylinder is fixedly arranged on the outer wall of the containing barrel 1, the piston rod of the power piece 5 passes through the top 101 and extends into the containing barrel 1, the piston rod of the power piece 5 is fixedly provided with a driving rod 6, the power piece 5 can drive the driving rod 6 to move axially along the containing barrel 1, The power member 5 can drive the scraper 2 to move axially, the scraper 2 can slide radially, the pushing mechanism 4 can push the scraper 2 radially, the first locking block 9 is used to open or close the pushing mechanism 4, the scraper 2 abuts against the barrel 103, the power member 5 can drive the first locking block 9 to open or close the pushing mechanism 4 through the connecting mechanism 3, the number of axial movements of the scraper 2 corresponds to the number of times the first locking block 9 opens the pushing mechanism 4, after the phosphoric acid device is finished working, the power member 5 is started to make the scraper 2 scrape from the bottom 102 to the top 101, and the inner wall of the barrel 1 is Impurity scraping, when the scraper 2 encounters impurities, the friction force it is subjected to increases, resulting in a movement, thereby driving the first locking block 9 to open the pushing mechanism 4, and the pushing mechanism 4 pushes the corresponding scraper 2 toward the barrel body 103, thereby causing the barrel body 103 to slide. As the number of movements of the scraper 2 increases, the greater the number of times the corresponding barrel body 103 is scraped, the greater the distance the corresponding barrel body 103 moves outward becomes. Compared with other barrel bodies 103 with smaller moving distances, it is convenient for the staff to promptly detect the barrel body 103 that needs to be repaired, thereby facilitating the staff to carry out timely repairs.

[0025] Reference Figure 1 , Figure 2 and Figure 3, four identification rods 7 are provided at the bottom 102, and the four identification rods 7 are distributed circumferentially along the bottom 102, one end of the identification rod 7 is fixedly connected to the bottom 102, and the other end of the identification rod 7 is fixedly connected to the top 101, and a single identification rod 7 is arranged between two barrel bodies 103, and the four barrel bodies 103 and the four identification rods 7 form a square holding barrel 1, and the barrel body 103 can slide to a state of being misaligned with the identification rod 7, and the four identification rods 7 are respectively located at the four corners of the holding barrel 1, and the barrel body 103 and the identification rod 7 are sealed. When cleaning, each time the scraper 2 scrapes once, the barrel body 103 moves outward a distance until the barrel body 103 is completely misaligned with the identification rod 7, which means that the corresponding barrel body 103 needs to be maintained, which is convenient for observation by the staff.

[0026] Reference Figure 1 , Figure 2 and Figure 3 The connecting mechanism 3 includes a telescopic rod 301, a first connecting block 302 and a first spring 303. The inner wall of the scraper 2 is provided with a first slide groove 8. One end of the telescopic rod 301 is fixedly connected to the driving rod 6. The first connecting block 302 is fixedly connected to the end of the telescopic rod 301 away from the driving rod 6. The first connecting block 302 is axially slidably arranged in the first slide groove 8 along the axial direction of the containing barrel 1. The first spring 303 is arranged in the first slide groove 8. One end of the first spring 303 is fixedly connected to the inner wall of the first slide groove 8. The other end of the first spring 303 is fixedly connected to the first connecting block 302. The block 302 is fixedly connected, and the first locking block 9 is arranged at the fixed end of the telescopic rod 301. The telescopic rod 301 can drive the first locking block 9 to move along the axial direction of the barrel 1. In the process of the power member 5 driving the scraper 2 to slide from the bottom 102 to the top 101, when the scraper 2 encounters resistance when encountering impurities, the telescopic rod 301 continues to move toward the top 101 relative to the scraper 2, driving the first locking block 9 to move. After scraping off the impurities, the first spring 303 drives the scraper 2 to move toward the bottom 102 relative to the telescopic rod 301, which is convenient and quick.

[0027] Reference Figure 1 , Figure 2 and Figure 3The pushing mechanism 4 includes a rod sleeve 401, a push rod 402 and a second spring 403. One end of the rod sleeve 401 is fixedly connected to the driving rod 6. The push rod 402 is inserted into the rod sleeve 401 by sliding along the radial direction. The second spring 403 is arranged between the rod sleeve 401 and the push rod 402. One end of the second spring 403 is fixedly connected to the rod sleeve 401. One end of the second spring 403 is fixedly connected to the push rod 402. The push rod 402 abuts against the scraper 2. The second spring 403 can drive The push rod 402 slides to push the scraper 2. The push rod 402 is provided with a locking hole 10. There are a plurality of locking holes 10. The plurality of locking holes 10 are distributed on the push rod 402 along the sliding direction of the push rod 402. The push rod 402 abuts against the scraper 2. The first locking block 9 can slide into or out of the locking hole 10. The outer wall of the driving rod 6 is provided with a buckle mechanism 11. The buckle mechanism 11 includes a connecting rod 1101, a second locking block 1102 and a third spring 1103. The connecting rod 1101 is provided with a buckle mechanism 1103. The first locking block 1102 is fixedly connected to the driving rod 6, the second locking block 1102 is slidably arranged in the sliding direction of the first locking block 9 and penetrates the connecting rod 1101, the third spring 1103 is arranged between the second locking block 1102 and the connecting rod 1101, one end of the third spring 1103 is fixedly connected to the connecting rod 1101, and the other end of the third spring 1103 is fixedly connected to the second locking block 1102, the second locking block 1102 can be slidably inserted into or out of the locking hole 10, and the first locking block 1102 is fixedly connected to the driving rod 6, the second locking block 1102 is ... and the second locking block 1102 is fixedly connected to the driving rod 6, and the first locking block 1102 is fixedly connected to the driving rod 6, and the second locking block 1102 is fixedly connected to the driving rod 6, and the first locking block 1102 is fixedly connected to the driving rod 6, and the second locking block 1102 is fixedly connected to the driving rod 6, and the second locking block 1102 is fixedly connected to the driving rod 6, and the first locking block 1102 is fixedly connected to the driving rod The stop block 9 can slide to squeeze the second locking block 1102 out of the locking hole 10. The first locking block 9 is located directly below the second locking block 1102. When the scraper 2 is blocked by impurities, the telescopic rod 301 drives the first locking block 9 to move upward, and squeezes the second locking block 1102 in the locking hole 10 out of the locking hole 10. At this time, the second spring 403 drives the push rod 402 to move, thereby pushing the scraper 2 to slide away from the driving rod 6, and the scraper 2 pushes the barrel body 103 to move outward, which is convenient and quick.

[0028] Reference Figure 1 , Figure 2 and Figure 3 The second locking block 1102 includes a vertical portion 11021 and an inclined portion 11022. The inclined portion 11022 is arranged at one end of the vertical portion 11021 away from the connecting rod 1101. The first locking block 9 pushes the second locking block 1102 to slide a distance equal to the length of the vertical portion 11021. After the first locking block 9 squeezes the vertical portion 11021 out of the locking hole 10, the first locking block 9 does not extend into the locking hole 10. At this time, the second spring 403 pushes the push rod 402 to slide, so that the locking hole 10 completely squeezes the second locking block 1102 out of the locking hole 10 along the inclined portion 11022. Then, the push rod 402 continues to push the scraper 2. When the next locking hole 10 arrives below the second locking block 1102, the second locking block 1102 is inserted to lock the push rod, which is convenient and quick.

[0029] Reference Figure 1 , Figure 2 and Figure 3 The bottom 102 is provided with a second slide groove 12, and the second slide groove 12 is provided along the sliding direction of the barrel body 103. The barrel body 103 is fixedly connected with a second connecting block 13 at one end facing the bottom 102. The second connecting block 13 is slidably provided in the second slide groove 12. A fourth spring 14 is provided in the second slide groove 12. One end of the fourth spring 14 is fixedly connected to the second slide groove 12, and the other end of the fourth spring 14 is fixedly connected to the second connecting block 13. The fourth spring 14 can drive the barrel body 103 to move toward the driving rod 6. The top 101 is provided with a There is a third slide groove 15, and the third slide groove 15 is opened along the sliding direction of the barrel body 103. The barrel body 103 is fixedly connected with a third connecting block 17 at one end facing the top 101. The third connecting block 17 is slidably set in the third slide groove 15. A sixth spring 16 is set in the third slide groove 15. One end of the sixth spring 16 is fixedly connected to the third slide groove 15, and the other end of the sixth spring 16 is fixedly connected to the third connecting block 17. The sixth spring 16 can drive the barrel body 103 to move toward the driving rod 6, so as to facilitate the resetting of the barrel body 103 after maintenance.

[0030] Reference Figure 1 , Figure 2 and Figure 3 The telescopic rod 301 includes a fixed sleeve 3011 and a moving rod 3012. One end of the fixed sleeve 3011 is connected to the driving rod 6. The moving rod 3012 is inserted into the fixed sleeve 3011 in a sliding direction along the sliding direction of the scraper 2. The first locking block 9 is fixed to the outer wall of the fixed sleeve 3011. A fifth spring is arranged in the fixed sleeve 3011. One end of the fifth spring is fixedly connected to the fixed sleeve 3011. The other end of the fifth spring is fixedly connected to the moving rod 3012. The fifth spring can drive the moving rod 3012 toward the fixed sleeve 3011. The sleeve 3011 slides, and after the maintenance is completed, the push rod 402 is manually pushed to the initial state, so that the second locking block 1102 is inserted into the locking hole 10 farthest from the driving rod 6. At this time, the fifth spring drives the scraper 2 to reset, which is convenient and quick. The elastic force of the first spring 303 is less than the elastic force of the second spring 403, the elastic force of the first spring 303 is less than the elastic force of the third spring 1103, the elastic force of the fourth spring 14 is equal to the elastic force of the sixth spring 16 is less than the elastic force of the second spring 403, and the elastic force of the fifth spring is less than the elastic force of the second spring 403.

[0031] A method for using the phosphoric acid concentration device as described above adopts the following technical solution: S1: Start the power member 5 to drive the scraper 2 to slide to the bottom 102.

[0032] S2: Move the scraper 2 from the bottom 102 to the top 101 .

[0033] S3: Observe the misalignment between the barrel body 103 and the identification rod 7. When the barrel body 103 and the identification rod 7 are completely misaligned, the corresponding barrel body 103 needs maintenance.

[0034] Implementation principle: When the barrel 1 is cleaned, the power part 5 drives the scraper 2 to move from the bottom 102 to the top 101 through the driving rod 6 and the connecting mechanism 3. When encountering the barrel body 103 with impurities, the corresponding scraper 2 is blocked, and the telescopic rod 301 continues to move, driving the first locking block 9 to squeeze the second locking block 1102 out of the locking hole 10. At this time, the push rod 402 moves to push the scraper 2 and the barrel body 103 away from the driving rod 6, so that the barrel body 103 and the identification rod 7 are misaligned to a certain extent. Each time the scraper 2 moves, the amplitude of the misalignment increases until the barrel body 103 and the scraper 2 are completely misaligned. At this time, the completely misaligned scraper 2 is maintained.

[0035] It should be noted that the above embodiments are only used to illustrate the present application and are not intended to limit the technical solutions described in the present application. Although the present application has been described in detail in this specification with reference to the above embodiments, a person of ordinary skill in the art should understand that a person of ordinary skill in the art can still modify or make equivalent substitutions to the present application, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present application should be included in the scope of the claims of the present application.

Claims

1. A phosphoric acid concentration device, characterized in that: The invention comprises a containing barrel (1), a scraper (2), a connecting mechanism (3), a first locking block (9) and a pushing mechanism (4); the containing barrel (1) comprises a top (101), a bottom (102) and a barrel body (103); the barrel body (103) is vertically arranged on the bottom (102); there are a plurality of barrel bodies (103), and the barrel bodies (103) are arranged circumferentially along the bottom (102); the top (101) is arranged at one end of the barrel body (103) away from the bottom (102); the barrel body (103) is radially slidably arranged along the bottom (102); there are a plurality of scrapers (2) and they correspond one to one with the barrel bodies (103); the top (101) is provided with a power piece (5); the power piece (5) is provided with a power piece (5) and ... The component (5) is provided with a driving rod (6), and the power component (5) can drive the driving rod (6) to move axially along the containing barrel (1), and the power component (5) can drive the scraper (2) to move axially, and the scraper (2) can slide radially, and the pushing mechanism (4) can push the scraper (2) radially, and the first locking block (9) is used to open or close the pushing mechanism (4), and the scraper (2) is in contact with the barrel body (103), and the power component (5) can drive the first locking block (9) to open or close the pushing mechanism (4) through the connecting mechanism (3), and the number of times the scraper (2) moves axially corresponds to the number of times the first locking block (9) opens the pushing mechanism (4).

2. A phosphoric acid concentration device according to claim 1, characterized in that: The connecting mechanism (3) comprises a telescopic rod (301), a first connecting block (302) and a first spring (303); a first sliding groove (8) is provided on the inner wall of the scraper (2); one end of the telescopic rod (301) is fixedly connected to the driving rod (6); the first connecting block (302) is fixedly connected to the end of the telescopic rod (301) away from the driving rod (6); the first connecting block (302) is arranged in the first sliding groove (8) along the axial direction of the containing barrel (1); the first spring (303) is arranged in the first sliding groove (8); one end of the first spring (303) is fixedly connected to the inner wall of the first sliding groove (8); the other end of the first spring (303) is fixedly connected to the first connecting block (302); the first locking block (9) is arranged at the fixed end of the telescopic rod (301); the telescopic rod (301) can drive the first locking block (9) to move along the axial direction of the containing barrel (1).

3. A phosphoric acid concentration device according to claim 2, characterized in that: The pushing mechanism (4) comprises a rod sleeve (401), a push rod (402) and a second spring (403); one end of the rod sleeve (401) is fixedly connected to the driving rod (6); the push rod (402) is inserted into the rod sleeve (401) in a radially sliding manner; the second spring (403) is arranged between the rod sleeve (401) and the push rod (402); one end of the second spring (403) is fixedly connected to the rod sleeve (401); One end of the second spring (403) is fixedly connected to the push rod (402), and the push rod (402) is in contact with the scraper (2). The second spring (403) can drive the push rod (402) to slide and push the scraper (2). The push rod (402) is provided with a locking hole (10), and there are a plurality of locking holes (10), and the plurality of locking holes (10) are distributed on the push rod (402) along the sliding direction of the push rod (402).

4. A phosphoric acid concentration device according to claim 3, characterized in that: The outer wall of the driving rod (6) is provided with a buckle mechanism (11), and the buckle mechanism (11) comprises a connecting rod (1101), a second locking block (1102) and a third spring (1103); one end of the connecting rod (1101) is fixedly connected to the driving rod (6); the second locking block (1102) is slidably penetrated through the connecting rod (1101) along the sliding direction of the first locking block (9); the third spring (1103) is arranged on the second locking block (1101) and the second locking block (1102) is slidably penetrated through the connecting rod (1101) along the sliding direction of the first locking block (9); Between the stop block (1102) and the connecting rod (1101), one end of the third spring (1103) is fixedly connected to the connecting rod (1101), and the other end of the third spring (1103) is fixedly connected to the second locking block (1102); the second locking block (1102) can be slidably inserted into or detached from the locking hole (10), and the first locking block (9) can be slidably squeezed out of the locking hole (10).

5. A phosphoric acid concentration device according to claim 4, characterized in that: The second locking block (1102) comprises a vertical portion (11021) and an inclined portion (11022), wherein the inclined portion (11022) is arranged at one end of the vertical portion (11021) away from the connecting rod (1101), and the first locking block (9) pushes the second locking block (1102) to slide a distance equal to the length of the vertical portion (11021).

6. A phosphoric acid concentration device according to claim 1, characterized in that: The bottom (102) is provided with a second slide groove (12), and the second slide groove (12) is provided along the sliding direction of the barrel body (103); the barrel body (103) is fixedly connected with a second connecting block (13) at one end facing the bottom (102); the second connecting block (13) is slidably arranged in the second slide groove (12); a fourth spring (14) is arranged in the second slide groove (12); one end of the fourth spring (14) is fixedly connected to the second slide groove (12), and the other end of the fourth spring (14) is fixedly connected to the second connecting block (13); the fourth spring (14) can drive the barrel body (103) to move toward the driving rod (6).

7. A phosphoric acid concentration device according to claim 1, characterized in that: The bottom (102) is provided with a plurality of identification rods (7), the plurality of identification rods (7) are distributed along the circumference of the bottom (102), one end of the identification rod (7) is fixedly connected to the bottom (102), and the other end of the identification rod (7) is fixedly connected to the top (101), a single identification rod (7) is arranged between two of the barrel bodies (103), the barrel bodies (103) and the plurality of identification rods (7) surround the containing barrel (1), and the barrel body (103) can slide to a state of being misaligned with the identification rod (7).

8. A phosphoric acid concentration device according to claim 2, characterized in that: The telescopic rod (301) comprises a fixed sleeve (3011) and a movable rod (3012); one end of the fixed sleeve (3011) is connected to the driving rod (6); the movable rod (3012) is inserted into the fixed sleeve (3011) for sliding along the sliding direction of the scraper (2); a fifth spring is arranged in the fixed sleeve (3011); one end of the fifth spring is fixedly connected to the fixed sleeve (3011); the other end of the fifth spring is fixedly connected to the movable rod (3012); the fifth spring can drive the movable rod (3012) to slide toward the fixed sleeve (3011).

9. A phosphoric acid concentration device according to claim 6, characterized in that: The top (101) is provided with a third slide groove (15), and the third slide groove (15) is provided along the sliding direction of the barrel body (103). One end of the barrel body (103) facing the top (101) is fixedly connected with a third connecting block (17), and the third connecting block (17) is slidably arranged in the third slide groove (15). A sixth spring (16) is arranged in the third slide groove (15), and one end of the sixth spring (16) is fixedly connected to the third slide groove (15), and the other end of the sixth spring (16) is fixedly connected to the third connecting block (17). The sixth spring (16) can drive the barrel body (103) to move toward the driving rod (6).

10. A method for using the phosphoric acid concentration device according to any one of claims 1 to 9, characterized in that: S1: starting the power member (5) to drive the scraper (2) to slide to the bottom (102); S2: moving the scraper (2) from the bottom (102) to the top (101); S3: Observe the misalignment between the barrel body (103) and the identification rod (7).

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