Defoaming device in wet-process phosphoric acid production

Abstract

The utility model relates to the field of wet-process phosphoric acid defoaming, in particular to a defoaming device in wet-process phosphoric acid production. Comprising a defoaming barrel, a transparent observation window is vertically embedded in the outer wall of the defoaming barrel, a control panel is installed on the outer wall of the defoaming barrel, a barrel cover is installed at the top of the defoaming barrel, two sets of through holes are symmetrically formed in the edge of the top of the barrel cover, a set of protective shells are arranged over each set of through holes, and the protective shells are arranged on the outer wall of the defoaming barrel. The bottom of each set of protective shell is installed on the top of the barrel cover, a set of air cylinder is arranged in each set of protective shell and electrically connected with the control panel, a scraping ring is arranged in the defoaming barrel, the output end of each set of air cylinder penetrates through a through hole and then is connected to the top of the scraping ring, and the scraping ring is of an annular structure. The outer wall of the scraping ring is attached to the inner portion of the defoaming barrel in a sliding mode. According to the embodiment, the labor intensity is reduced while the waste of wet-process phosphoric acid is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of defoaming of wet-process phosphoric acid, in particular to a defoaming device in the production of wet-process phosphoric acid. Background Art

[0002] Wet process production is to decompose phosphate rock powder with inorganic acid to separate crude phosphoric acid, and then purify it to obtain phosphoric acid products. Wet process phosphoric acid is 20% to 30% cheaper than thermal process phosphoric acid. After purification by appropriate methods, the product purity is comparable to thermal process phosphoric acid. The wet process phosphoric acid technology is in a dominant position in phosphoric acid production. In the production process of wet process phosphoric acid, defoamers can be used to eliminate foam. Commonly used defoamers include silicones, fatty acids, polyethers, etc. The choice of defoamers should be based on the production process and foam properties.

[0003] After searching, in the prior art, Chinese patent announcement number: CN220736339U, authorization announcement date: 2024-04-09, discloses a defoaming device in the production of wet phosphoric acid, including a defoaming box, a supporting bottom plate installed at the bottom of the defoaming box, and a feed pipe and a discharge pipe respectively installed at the top of the defoaming box, and also includes a mixing defoaming mechanism; the mixing defoaming mechanism includes a servo motor installed at the top of the outer wall of the defoaming box, the output end of the servo motor is fixedly connected to a rotating shaft, and the end of the rotating shaft away from the servo motor extends to the inside of the defoaming box, the top of the inner wall of the defoaming box is fixedly connected to a storage box, and the outer side wall of the rotating shaft is located inside the defoaming box and fixedly connected to multiple mixing rods, and the top of the mixing rod is fixedly connected to a rotating baffle. The above embodiment improves the working efficiency of eliminating bubbles inside the wet phosphoric acid material.

[0004] However, the device still has the following defects: it is difficult to clean the inside of the device after the above embodiment. If the wet phosphoric acid adhering to the inner wall of the device cannot be scraped off during output, it will cause the labor intensity of the staff in the subsequent cleaning process to be high, thereby increasing the labor intensity and wasting wet phosphoric acid. Utility Model Content

[0005] In view of the above problems, the utility model provides a defoaming device in the production of wet phosphoric acid, comprising a defoaming barrel, a transparent observation window is vertically embedded on the outer wall of the defoaming barrel, a control panel is installed on the outer wall of the defoaming barrel, a barrel cover is installed on the top of the defoaming barrel, two groups of through holes are symmetrically opened at the top edge of the barrel cover, a group of protective shells is arranged directly above each group of through holes, and the bottom of each group of protective shells is installed on the top of the barrel cover;

[0006] A group of cylinders is arranged in each group of the protective shells, and the cylinders are electrically connected to the control panel. A scraper ring is arranged in the defoaming barrel, and the output end of each group of the cylinders passes through the through hole and is connected to the top of the scraper ring. The scraper ring is arranged in an annular structure, and the outer wall of the scraper ring slides and fits on the inner surface of the defoaming barrel.

[0007] Furthermore, a motor is arranged above the barrel cover, the motor is electrically connected to the control panel, and the two groups of protective shells are located at both ends of the motor.

[0008] Furthermore, the output end of the motor passes through the barrel cover and is connected to a stirring rod in a transmission manner. The stirring rod is placed in the defoaming barrel, and stirring blades are arranged on the outer wall of the stirring rod.

[0009] Furthermore, two groups of supporting legs are symmetrically installed at the bottom edge of the defoaming barrel, and an output pipe is connected to the bottom center of the defoaming barrel. A first electric valve is fixedly sleeved on the output pipe, and the first electric valve is electrically connected to the control panel.

[0010] Furthermore, a feeding pipe is connected to the top edge of the barrel cover, a material storage barrel is arranged directly above the barrel cover, and the motor is located directly below the material storage barrel.

[0011] Furthermore, two groups of support columns are symmetrically installed at the bottom edge of the storage barrel, the bottom of each group of support columns is installed on the top of the barrel cover, and the top edge of the storage barrel is connected to a feed pipe, and a pipe cover is installed on the top of the feed pipe.

[0012] Furthermore, the bottom of the storage barrel is connected to a delivery pipe, the bottom of the delivery pipe is connected to the top of the barrel cover, a second electric valve is fixedly sleeved on the delivery pipe, and a flow meter is fixedly sleeved on the delivery pipe.

[0013] Furthermore, the flow meter is located directly below the second electric valve, and the second electric valve and the flow meter are both electrically connected to the control panel.

[0014] The beneficial effects of the utility model are:

[0015] 1. After the mixed wet phosphoric acid is output, the cylinder drives the scraper ring to rise and fall to scrape off the materials adhering to the inner wall of the defoaming barrel, making it easier for subsequent staff to clean it, avoiding the waste of wet phosphoric acid and reducing labor intensity.

[0016] 2. After the mixed wet phosphoric acid is output, the cylinder drives the scraper ring to rise and fall to scrape off the materials adhering to the inner wall of the defoaming barrel, making it easier for subsequent staff to clean it, avoiding the waste of wet phosphoric acid and reducing labor intensity.

[0017] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a defoaming device according to an embodiment of the utility model is shown;

[0020] Figure 2 A cross-sectional schematic diagram of a defoaming device according to an embodiment of the utility model is shown;

[0021] Figure 3 A schematic diagram of the scraper ring structure according to an embodiment of the utility model is shown;

[0022] Figure 4 An enlarged view of part A according to an embodiment of the utility model is shown;

[0023] Figure 5 An enlarged view of part B according to an embodiment of the utility model is shown.

[0024] In the figure: 1. defoaming barrel; 2. transparent observation window; 3. control panel; 4. supporting legs; 5. output pipe; 6. first electric valve; 7. barrel cover; 8. storage barrel; 9. supporting column; 10. feed pipe; 11. pipe cover; 12. delivery pipe; 13. second electric valve; 14. flow meter; 15. motor; 16. stirring rod; 17. stirring blade; 18. through hole; 19. protective shell; 20. cylinder; 21. scraper ring; 22. feed pipe. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The present utility model embodiment provides a defoaming device in wet phosphoric acid production, including a defoaming barrel 1, exemplarily, as Figure 1 and Figure 2 As shown, a transparent observation window 2 is vertically embedded on the outer wall of the defoaming barrel 1, a control panel 3 is installed on the outer wall of the defoaming barrel 1, two groups of supporting legs 4 are symmetrically installed at the bottom edge of the defoaming barrel 1, an output pipe 5 is connected at the bottom center of the defoaming barrel 1, a first electric valve 6 is fixedly sleeved on the output pipe 5, and the first electric valve 6 is electrically connected to the control panel 3, a barrel cover 7 is installed on the top of the defoaming barrel 1, a feeding pipe 22 is connected at the top edge of the barrel cover 7, a storage barrel 8 is arranged directly above the barrel cover 7, two groups of supporting columns 9 are symmetrically installed at the bottom edge of the storage barrel 8, the bottom of each group of the supporting columns 9 is installed on the top of the barrel cover 7, a feeding pipe 10 is connected at the top edge of the storage barrel 8, and a pipe cover 11 is installed on the top of the feeding pipe 10.

[0027] For example, Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the bottom of the storage barrel 8 is connected with a delivery pipe 12, and the bottom of the delivery pipe 12 is connected with the top of the barrel cover 7. A second electric valve 13 is fixedly sleeved on the delivery pipe 12, and a flow meter 14 is fixedly sleeved on the delivery pipe 12. The flow meter 14 is located directly below the second electric valve 13. The second electric valve 13 and the flow meter 14 are both electrically connected to the control panel 3. A motor 15 is arranged above the barrel cover 7, and the motor 15 is electrically connected to the control panel 3. The motor 15 is located directly below the storage barrel 8. The output end of the motor 15 passes through the barrel cover 7 and is transmission-connected to a stirring rod 16, and the stirring rod 16 is placed in the defoaming barrel 1. A stirring blade 17 is provided on the outer wall of the stirring rod 16, and two groups of through holes 18 are symmetrically opened at the top edge of the barrel cover 7. A group of protective shells 19 is provided directly above each group of the through holes 18, and the bottom of each group of the protective shells 19 is installed on the top of the barrel cover 7. The two groups of the protective shells 19 are located at both ends of the motor 15, and a group of cylinders 20 are provided in each group of the protective shells 19. The cylinders 20 are electrically connected to the control panel 3. A scraper ring 21 is provided in the defoaming barrel 1, and the output end of each group of the cylinders 20 passes through the through hole 18 and is connected to the top of the scraper ring 21. The scraper ring 21 is arranged in an annular structure, and the outer wall of the scraper ring 21 slides and fits on the inner surface of the defoaming barrel 1.

[0028] Working principle: Turn the tube cover 11 away from the feed pipe 10, pour the defoamer into the tube cover 11, and enter the storage barrel 8 through the tube cover 11. The tube cover 11 is restored, and the wet phosphoric acid is poured into the feed pipe 22, and enters the defoamer barrel 1 through the feed pipe 22.

[0029] The second electric valve 13 and the flow meter 14 are started, and the defoaming agent in the storage barrel 8 enters the defoaming barrel 1 through the delivery pipe 12. The flow meter 14 sends a signal to the second electric valve 13 after detecting that the set delivery volume has been reached. The second electric valve 13 is closed, and the motor 15 is started. The motor 15 drives the stirring rod 16 to rotate and drives the stirring blade 17 to rotate to mix the wet-process phosphoric acid and the defoaming agent. After sufficient mixing, the first electric valve 6 is started, and the mixed wet-process phosphoric acid is output through the output pipe 5. The cylinder 20 is started, and the cylinder 20 drives the scraper ring 21 to rise and fall to scrape the material adhered to the inner wall of the defoaming barrel 1. When the equipment is in use, the inside of the defoaming barrel 1 can be observed through the transparent observation window 2.

[0030] The mixed wet phosphoric acid is output, and the cylinder 20 drives the scraper ring 21 to rise and fall to scrape off the materials adhering to the inner wall of the defoaming barrel 1, so that the subsequent staff can reduce the difficulty of cleaning it, avoid the waste of wet phosphoric acid and reduce the labor intensity.

[0031] The second electric valve 13 and the flow meter 14 are started, and the defoaming agent in the storage barrel 8 enters the defoaming barrel 1 through the delivery pipe 12. The flow meter 14 sends a signal to the second electric valve 13 after detecting that the set delivery volume has been reached, and the second electric valve 13 is closed, which achieves the effect of quantitative delivery and avoids excessive or insufficient delivery that affects the defoaming quality of wet-process phosphoric acid.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A defoaming device for wet phosphoric acid production, comprising a defoaming barrel (1), characterized in that: A transparent observation window (2) is vertically embedded on the outer wall of the defoaming barrel (1); a control panel (3) is installed on the outer wall of the defoaming barrel (1); a barrel cover (7) is installed on the top of the defoaming barrel (1); two groups of through holes (18) are symmetrically opened at the top edge of the barrel cover (7); a group of protective shells (19) is arranged directly above each group of through holes (18); and the bottom of each group of protective shells (19) is installed on the top of the barrel cover (7); A group of cylinders (20) is arranged in each group of the protective shells (19), and the cylinders (20) are electrically connected to the control panel (3). A scraper ring (21) is arranged in the defoaming barrel (1), and the output end of each group of the cylinders (20) passes through the through hole (18) and is connected to the top of the scraper ring (21). The scraper ring (21) is arranged in an annular structure, and the outer wall of the scraper ring (21) is slidably fitted on the inner surface of the defoaming barrel (1).

2. The defoaming device in wet phosphoric acid production according to claim 1, characterized in that: A motor (15) is arranged above the barrel cover (7), and the motor (15) is electrically connected to the control panel (3). The two sets of protective shells (19) are located at both ends of the motor (15).

3. The defoaming device in the production of wet phosphoric acid according to claim 2, characterized in that: The output end of the motor (15) passes through the barrel cover (7) and is then drivingly connected to a stirring rod (16). The stirring rod (16) is placed in the defoaming barrel (1), and a stirring blade (17) is arranged on the outer wall of the stirring rod (16).

4. The defoaming device in wet process phosphoric acid production according to claim 1, characterized in that: Two groups of supporting legs (4) are symmetrically installed at the bottom edge of the defoaming barrel (1), and an output pipe (5) is connected to the center of the bottom of the defoaming barrel (1). A first electric valve (6) is fixedly sleeved on the output pipe (5), and the first electric valve (6) is electrically connected to the control panel (3).

5. The defoaming device in wet process phosphoric acid production according to claim 3, characterized in that: The top edge of the barrel cover (7) is connected to a material inlet pipe (22), a material storage barrel (8) is arranged directly above the barrel cover (7), and the motor (15) is located directly below the material storage barrel (8).

6. The defoaming device in wet process phosphoric acid production according to claim 5, characterized in that: Two groups of support columns (9) are symmetrically installed at the bottom edge of the storage barrel (8), and the bottom of each group of support columns (9) is installed on the top of the barrel cover (7). The top edge of the storage barrel (8) is connected to a feed pipe (10), and a pipe cover (11) is installed on the top of the feed pipe (10).

7. The defoaming device in wet process phosphoric acid production according to claim 6, characterized in that: The bottom of the material storage barrel (8) is connected to a delivery pipe (12), the bottom of the delivery pipe (12) is connected to the top of the barrel cover (7), a second electric valve (13) is fixedly sleeved on the delivery pipe (12), and a flow meter (14) is fixedly sleeved on the delivery pipe (12).

8. The defoaming device in wet process phosphoric acid production according to claim 7, characterized in that: The flow meter (14) is located directly below the second electric valve (13), and the second electric valve (13) and the flow meter (14) are both electrically connected to the control panel (3).

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