An acid liquid circulation type barium sulfate pickling and impurity removing device

Abstract

This utility model relates to the field of barium sulfate generation technology, specifically to an acid-circulating barium sulfate acid washing and impurity removal device. It includes a cleaning mechanism, a filter mechanism connected to the bottom of the cleaning mechanism, a circulation pump on the side of the filter mechanism with its input end extending to the bottom of the filter mechanism and its output end extending to the top of the cleaning mechanism, a waste residue collection tank on the side of the filter mechanism, and an acid mist treatment unit connected to the top of the cleaning mechanism. In use, an upper cleaning tank holds the barium sulfate to be acid-washed, and a filter mechanism at the bottom of the upper cleaning tank holds the acid solution. The circulation pump draws the acid solution from the filter mechanism and injects it into the upper cleaning tank from the top. Simultaneously, a stirring paddle agitates the barium sulfate, improving the uniformity of contact between the acid solution and the barium sulfate and enabling acid recycling.

Description

Technical Field

[0001] This utility model relates to the field of barium sulfate technology, and in particular to an acid-circulating barium sulfate acid washing and impurity removal device. Background Technology

[0002] Barium sulfate is a double contrast agent for X-rays. It is a high-density gastrointestinal contrast agent and can be prepared into suspensions of different proportions for use alone, but it is usually used in conjunction with low-density gas to achieve the purpose of double contrast imaging.

[0003] During the production of barium sulfate, acid washing is required to remove soluble impurities from its surface (barium sulfate (BaSO4) may adsorb soluble ions such as Cl⁻ and Na⁺ during the preparation process, which are then washed away by reacting with dilute acids (such as sulfuric acid and hydrochloric acid) to form soluble substances) and to reduce precipitation loss (barium sulfate exists in a dissolution equilibrium; when washed with sulfuric acid, the common ion effect inhibits dissolution and reduces Ba²⁺ loss).

[0004] Existing barium sulfate acid washing and impurity removal devices mainly use flowing acid to directly rinse barium sulfate. The contact time between the acid and barium sulfate is short, resulting in poor cleaning effect and high acid consumption.

[0005] Therefore, this application proposes an acid-circulating barium sulfate pickling and impurity removal device to improve pickling efficiency and reduce acid consumption. Utility Model Content

[0006] In view of the shortcomings of the prior art mentioned above, the purpose of this utility model is to provide an acid-circulating barium sulfate acid washing and impurity removal device to solve the problems of low acid washing efficiency and high acid consumption mentioned in the prior art.

[0007] To achieve the above and other related objectives, this utility model provides an acid-circulating barium sulfate acid washing and impurity removal device, including a cleaning mechanism, a filter mechanism communicating with the cleaning mechanism at the bottom, a circulation pump on the side of the filter mechanism, the input end of the circulation pump extending to the inner bottom of the filter mechanism, and the output end of the circulation pump extending to the top of the cleaning mechanism. The side of the filtration mechanism is also equipped with a waste residue collection bucket, and the top of the cleaning mechanism is connected to an acid mist treatment unit. The cleaning mechanism includes an upper cleaning tank with an open bottom and a feed inlet at the top. The lower part of the inner wall of the upper cleaning tank has an isolation and penetration section with permeability. A stirring motor is located at the center of the top of the upper cleaning tank, and the output end of the stirring motor extends into the interior of the upper cleaning tank. A stirring paddle is located on the output end of the stirring motor.

[0008] Preferably, the bottom of the agitator is close to the top of the isolation permeation section, and the agitator speed is 60-80 r / min.

[0009] Preferably, the filtration mechanism includes a lower filter barrel, the top of which is an open opening, and the top of the lower filter barrel is connected to the bottom of the upper cleaning barrel. The lower filter barrel has an inclined filter element in the middle of its inner wall, and a slag discharge port on the side of the lower filter barrel. The bottom of the inner diameter of the slag discharge port is flush with the upper surface of the lower part of the inclined filter element, and the slag discharge port is connected to the waste slag collection barrel. The inclined filter element has a rotatable scraper plate at its axis, the bottom of which is in contact with the top of the inclined filter element. The bottom of the axis of the inclined filter element has a drive shaft, one end of which is connected to the axis of the scraper plate, and the other end of which is connected to a motor at the bottom of the lower filter barrel.

[0010] Preferably, a pneumatic valve is provided at the connection between the slag discharge port and the waste slag collection bucket.

[0011] Preferably, the main body of the inclined filter element is a 100-mesh stainless steel filter screen, and the surface of the stainless steel filter screen is covered with a nano-ceramic filter membrane.

[0012] Preferably, the drive shaft includes a first drive rod, one end of which is connected to a motor, the other end of which is connected to a universal joint, and the other end of which is connected to a second drive rod, which is connected to a scraper plate.

[0013] Preferably, the bottom of the lower filter tank is equipped with an online acid concentration monitor, which is connected to an external acid addition device.

[0014] Preferably, the acid mist treatment unit includes an acid mist treatment tank, and the top of the acid mist treatment tank is respectively provided with an air inlet pipe, a water inlet pipe and an exhaust pipe; One end of the air inlet pipe is connected to the top of the upper cleaning tank, and the other end of the air inlet pipe extends to the bottom of the acid mist treatment tank. The water inlet pipe is connected to an external water supply system.

[0015] Preferably, a spray head is provided at the top of the inner wall of the acid mist treatment tank, and the spray head is connected to the water inlet pipe.

[0016] Preferably, activated carbon is provided in the middle of the inner wall of the acid mist treatment tank, and there is a gap between the bottom of the activated carbon and the bottom of the inner wall of the acid mist treatment tank, and a gap between the top of the activated carbon and the bottom of the spray head.

[0017] As described above, the acid-circulating barium sulfate washing and impurity removal device of this utility model has the following beneficial effects: 1. This utility model sets up an upper cleaning tank to hold barium sulfate to be pickled, and a filter mechanism at the bottom of the upper cleaning tank to hold acid solution. The acid solution in the filter mechanism is drawn by a circulation pump and injected into the upper cleaning tank from the top. At the same time, the barium sulfate is stirred by a stirring paddle, which improves the uniformity of contact between the acid solution and barium sulfate and enables the acid solution to be recycled.

[0018] 2. This utility model filters impurities in acid by setting an inclined filter element in the middle of the lower filter tank, and a scraper is set on the inclined filter element to remove the waste residue attached to the inclined filter element at regular intervals. The waste residue enters the waste residue collection tank from the slag discharge port and is collected, thereby improving the purity of acid and reducing the risk of acid mist leakage caused by manual opening of the lid for cleaning.

[0019] 3. This utility model sets up an acid mist treatment tank and connects it to the upper cleaning tank through a water inlet pipe. The acid mist generated by the acid liquid enters the interior of the acid mist treatment tank through the water inlet pipe, and is then treated by activated carbon adsorption in the acid mist treatment tank and by water spraying. Finally, it is discharged through the discharge pipe, thus achieving the effect of improving environmental protection.

[0020] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value. Attached Figure Description

[0021] Figure 1 The diagram shown is a structural schematic of this utility model.

[0022] Figure 2 The diagram shown is a cross-sectional view of the cleaning mechanism of this utility model.

[0023] Figure 3 The diagram shown is a schematic representation of the internal structure of the filtration mechanism of this utility model.

[0024] Figure 4 This utility model is shown. Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0025] Figure 5 The diagram shown is a structural schematic of the acid mist treatment unit of this utility model.

[0026] Component designation explanation: 1. Cleaning mechanism; 11. Upper cleaning tank; 12. Feed inlet; 13. Isolation and penetration section; 14. Agitator motor; 15. Agitator paddle; 2. Filtration mechanism; 21. Lower filter tank; 22. Inclined filter element; 23. Slag discharge port; 24. Slag scraper; 25. Drive shaft; 251. First drive rod; 252. Universal shaft; 253. Second drive rod; 26. Online acid concentration monitor; 3. Circulating pump; 4. Waste collection bin; 5. Acid mist treatment section; 51. Acid mist treatment tank; 511. Activated carbon; 52. Air inlet pipe; 53. Water inlet pipe; 531. Spray head; 54. Discharge pipe. Detailed Implementation

[0027] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0028] Please see Figures 1 to 5 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0029] like Figure 1 , Figure 2 As shown, this utility model provides an acid-circulating barium sulfate acid washing and impurity removal device, including a cleaning mechanism 1, a filter mechanism 2 connected to the cleaning mechanism 1 at the bottom, a circulation pump 3 on the side of the filter mechanism 2, the input end of the circulation pump 3 extending to the inner bottom of the filter mechanism 2, and the output end of the circulation pump 3 extending to the top of the cleaning mechanism 1. When acid washing barium sulfate, the circulation pump 3 draws acid from the filter mechanism 2 and injects it into the interior of the cleaning mechanism 1 from the top of the cleaning mechanism 1 to rinse the barium sulfate. The side of the filter mechanism 2 is also equipped with a waste residue collection bucket 4 for collecting waste residue generated during the pickling process, and the top of the cleaning mechanism 1 is connected to an acid mist treatment unit 5 for collecting acid mist generated by the acid liquid.

[0030] Specifically, the cleaning mechanism 1 includes an upper cleaning tank 11 with an open bottom and a feed inlet 12 at the top for discharging and injecting acid. The feed inlet 12 is equipped with a removable sealing cap for sealing. The lower part of the inner wall of the upper cleaning tank 11 is provided with an isolation permeation section 13 for supporting the barium sulfate. The isolation permeation section 13 is permeable, allowing the acid to permeate through the isolation permeation section 13 and enter the filtration mechanism 2 for recycling. A stirring motor 14 is provided at the shaft at the top of the upper cleaning tank 11. The output end of the stirring motor 14 extends into the interior of the upper cleaning tank 11, and a stirring paddle 15 is provided at the output end of the stirring motor 14. The stirring motor 14 drives the stirring paddle 15 to rotate to stir the barium sulfate, thereby improving the contact between the barium sulfate and the acid.

[0031] like Figure 2 As shown, in some embodiments, the bottom of the stirring paddle 15 of this invention is close to the top of the isolation and permeation section 13, so that the barium sulfate can be fully stirred by the stirring paddle 15, so that the barium sulfate and the acid solution can be in more complete contact; the stirring speed of the stirring paddle 15 is 60-80 r / min, so as to avoid damage to the barium sulfate or insufficient stirring caused by the stirring paddle 15 rotating too fast or too slow.

[0032] like Figure 2 and Figure 3 As shown, in some embodiments, the filter mechanism 2 of this utility model includes a lower filter barrel 21, the top of the lower filter barrel 21 is an open opening, the top of the lower filter barrel 21 is connected to the bottom of the upper cleaning barrel 11, and the connection is sealed. The lower filter tank 21 has an inclined filter element 22 in the middle of its inner wall for filtering the waste residue generated during the pickling process. The inclined filter element 22 is inclined so that the waste residue can be concentrated at the bottom of the inclined filter element 22 under the action of liquid flow and gravity. The lower filter tank 21 has a slag discharge port 23 on its side. The bottom of the inner diameter of the slag discharge port 23 is flush with the upper surface of the lower part of the inclined filter element 22. The slag discharge port 23 is connected to the waste residue collection tank 4. When discharging slag, the waste residue flows from the slag discharge port 23 into the waste residue collection tank 4 for collection. The waste residue collection tank 4 has an opening for easy cleaning of waste residue. The opening is normally sealed and is opened when cleaning waste residue.

[0033] The inclined filter element 22 has a rotatable scraper plate 24 at its axis. The scraper plate 24 is made of acid-resistant PVC. The bottom of the scraper plate 24 is attached to the top of the inclined filter element 22. The bottom of the axis of the inclined filter element 22 has a drive shaft 25. One end of the drive shaft 25 is connected to the axis of the scraper plate 24, and the other end of the drive shaft 25 is connected to the motor at the bottom of the lower filter barrel 21. The motor drives the scraper plate 24 to rotate, so that the waste residue attached to the surface of the inclined filter element 22 is more likely to be placed at the slag discharge port 23 and the inclined filter element 22 is prevented from being blocked by waste residue. The rotation frequency of the scraper plate 24 is set to 1 time / 2h.

[0034] It should be noted that a pneumatic valve is provided at the connection between the slag discharge port 23 and the waste slag collection bucket 4. When not discharging slag, the pneumatic valve is closed to prevent acid from entering the waste slag collection bucket 4. When discharging slag, the pneumatic valve is opened to connect the slag discharge port 23 and the waste slag collection bucket 4.

[0035] It is worth mentioning that the main body of the inclined filter element 22 of this utility model is a 100-mesh stainless steel filter screen. The surface of the stainless steel filter screen is covered with a nano-ceramic filter membrane. Through the cooperation of the stainless steel filter screen and the nano-ceramic filter membrane, the acid can enter the bottom of the lower filter tank 21 for recycling, while the waste residue is isolated above the inclined filter element 22. When the scraper plate 24 rotates, it enters the interior of the waste residue collection tank 4 from the slag discharge port 23.

[0036] like Figure 2 and Figure 4 As shown, in some embodiments, the drive shaft 25 of this utility model includes a first drive rod 251, one end of which is connected to a motor, and the other end of which is connected to a universal joint 252. The other end of the universal joint 252 is connected to a second drive rod 253, which is connected to a scraper plate 24. By connecting the first drive rod 251 and the second drive rod 253 through the universal joint 252, the second drive rod 253 can stably transmit power to the inclined scraper plate 24 when the motor is driven.

[0037] like Figure 2 As shown, in some embodiments, the bottom of the lower filter tank 21 of this invention is provided with an online acid concentration monitor 26 for real-time detection of the pH value of the acid in the lower filter tank 21. The online acid concentration monitor 26 is connected to an external acid adding device. When the concentration of the acid is lower than 10%, the online acid concentration monitor 26 sends a working signal to the external acid adding device, which then injects acid into the upper cleaning tank 11 through the feed inlet 12 to avoid excessive consumption of acid.

[0038] like Figure 2 and Figure 5As shown, in some embodiments, the acid mist treatment unit 5 of this utility model includes an acid mist treatment tank 51, and the top of the acid mist treatment tank 51 is respectively provided with an air inlet pipe 52, a water inlet pipe 53 and an exhaust pipe 54. One end of the air inlet pipe 52 is connected to the top of the upper cleaning tank 11, and the other end of the air inlet pipe 52 extends to the bottom of the acid mist treatment tank 51. The acid mist in the upper cleaning tank 11 enters the bottom of the acid mist treatment tank 51 through the air inlet pipe 52. The inlet pipe 53 is connected to an external water supply system. A 10% sodium hydroxide solution is injected into the acid mist treatment tank 51 through the inlet pipe 53 to neutralize the acid mist, thereby achieving the environmental protection standards for emissions.

[0039] like Figure 5 As shown in some embodiments, the top of the inner wall of the acid mist treatment tank 51 of this utility model is provided with a spray head 531. The spray head 531 is connected to the water inlet pipe 53. The sodium hydroxide solution is atomized and sprayed out through the spray head 531, which can cover the acid mist over a large area from above and improve the efficiency of neutralizing the acid mist.

[0040] like Figure 5 As shown, in some embodiments, activated carbon 511 is provided in the middle of the inner wall of the acid mist treatment tank 51 of this utility model for further adsorption and purification of acid mist; a gap is left between the bottom of the activated carbon 511 and the inner bottom of the acid mist treatment tank 51, and a gap is left between the top of the activated carbon 511 and the bottom of the spray head 531, in order to improve the adsorption effect of activated carbon 511 on acid mist. Activated carbon 511 can be placed inside the adsorption tank, and the adsorption tank is arranged side by side on the side of the acid mist treatment tank 51 and connected by a pipe, so as to avoid the activated carbon 511 being wetted by the spray liquid. After the acid mist is neutralized by the spray head 531, it enters the adsorption tank and is adsorbed by the activated carbon 511, and then discharged through the discharge pipe 54. The above structure is not shown in the attached drawings of the specification.

[0041] In summary, the acid-circulating barium sulfate pickling and impurity removal device of this utility model has an upper cleaning tank 11 for holding barium sulfate to be pickled, and a filter mechanism 2 at the bottom of the upper cleaning tank 11 for holding acid. The acid is drawn from the filter mechanism 2 by the circulating pump 3 and injected into the upper cleaning tank 11 from the top. At the same time, the barium sulfate is stirred by the stirring paddle 15, which achieves the effect of improving the uniformity of contact between acid and barium sulfate and recycling acid.

[0042] This invention filters impurities in acid by setting an inclined filter element 22 in the middle of the lower filter tank 21, and a scraper 24 is provided on the inclined filter element 22 to remove the waste residue attached to the inclined filter element 22 at regular intervals. The waste residue enters the waste residue collection tank 4 through the slag discharge port 23, thereby improving the purity of acid and reducing the risk of acid mist leakage caused by manual opening and cleaning.

[0043] This utility model sets up an acid mist treatment tank 51 and connects the acid mist treatment tank 51 to the upper cleaning tank 11 through a water inlet pipe 53. The acid mist generated by the acid liquid enters the interior of the acid mist treatment tank 51 through the water inlet pipe 53, and is then adsorbed by the activated carbon 511 in the acid mist treatment tank 51 and treated by water spraying. Finally, it is discharged through the discharge pipe 54, thus achieving the effect of improving environmental protection.

[0044] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0045] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A barium sulfate acid washing and impurity removal device with acid circulation, characterized in that, The system includes a cleaning mechanism (1), a filter mechanism (2) connected to the cleaning mechanism (1) is provided below the cleaning mechanism (1), a circulation pump (3) is provided on the side of the filter mechanism (2), the input end of the circulation pump (3) extends to the inner bottom of the filter mechanism (2), and the output end of the circulation pump (3) extends to the top of the cleaning mechanism (1). The side of the filtration mechanism (2) is also provided with a waste collection bucket (4), and the top of the cleaning mechanism (1) is connected to an acid mist treatment unit (5). The cleaning mechanism (1) includes an upper cleaning tank (11), the bottom of which is an open opening, and the top of which is provided with a feed inlet (12). The lower part of the inner wall of the upper cleaning tank (11) is provided with an isolation and penetration section (13), which is permeable. A stirring motor (14) is provided at the axial center of the top of the upper cleaning tank (11). The output end of the stirring motor (14) extends into the interior of the upper cleaning tank (11), and a stirring paddle (15) is provided on the output end of the stirring motor (14).

2. The acid-circulating barium sulfate washing and impurity removal device according to claim 1, characterized in that: The bottom of the stirring paddle (15) is close to the top of the isolation permeation section (13), and the stirring speed of the stirring paddle (15) is 60-80 r / min.

3. The acid-circulating barium sulfate washing and impurity removal device according to claim 2, characterized in that: The filtration mechanism (2) includes a lower filter barrel (21), the top of which is an open opening, and the top of which is connected to the bottom of the upper cleaning barrel (11). The lower filter barrel (21) has an inclined filter element (22) in the middle of its inner wall. The lower filter barrel (21) has a slag discharge port (23) on its side. The bottom of the inner diameter of the slag discharge port (23) is flush with the upper surface of the lower part of the inclined filter element (22). The slag discharge port (23) is connected to the waste slag collection barrel (4). The inclined filter element (22) has a rotatable scraper (24) at its axis. The bottom of the scraper (24) is in contact with the top of the inclined filter element (22). The bottom of the axis of the inclined filter element (22) is provided with a drive shaft (25). One end of the drive shaft (25) is connected to the axis of the scraper (24), and the other end of the drive shaft (25) is connected to the motor at the bottom of the lower filter barrel (21).

4. The acid-circulating barium sulfate washing and impurity removal device according to claim 3, characterized in that: A pneumatic valve is provided at the connection between the slag discharge port (23) and the waste slag collection bucket (4).

5. The acid-circulating barium sulfate washing and impurity removal device according to claim 3, characterized in that: The main body of the inclined filter element (22) is a 100-mesh stainless steel filter screen, and the surface of the stainless steel filter screen is covered with a nano-ceramic filter membrane.

6. The acid-circulating barium sulfate washing and impurity removal device according to claim 3, characterized in that: The drive shaft (25) includes a first drive rod (251), one end of which is connected to a motor, and the other end of which is connected to a universal joint (252). The other end of the universal joint (252) is connected to a second drive rod (253), and the second drive rod (253) is connected to a scraper plate (24).

7. The acid-circulating barium sulfate washing and impurity removal device according to claim 6, characterized in that: The bottom of the lower filter tank (21) is equipped with an online acid concentration monitor (26), which is connected to an external acid addition device.

8. The acid-circulating barium sulfate washing and impurity removal device according to claim 1, characterized in that: The acid mist treatment unit (5) includes an acid mist treatment tank (51), and the top of the acid mist treatment tank (51) is provided with an air inlet pipe (52), a water inlet pipe (53) and an exhaust pipe (54). One end of the air inlet pipe (52) is connected to the top of the upper cleaning tank (11), and the other end of the air inlet pipe (52) extends to the bottom of the acid mist treatment tank (51). The inlet pipe (53) is connected to the external water supply system.

9. The acid-circulating barium sulfate washing and impurity removal device according to claim 8, characterized in that: The top of the inner wall of the acid mist treatment tank (51) is provided with a spray head (531), which is connected to the water inlet pipe (53).

10. The acid-circulating barium sulfate washing and impurity removal device according to claim 9, characterized in that: Activated carbon (511) is provided in the middle of the inner wall of the acid mist treatment tank (51). There is a gap between the bottom of the activated carbon (511) and the bottom of the acid mist treatment tank (51), and a gap between the top of the activated carbon (511) and the bottom of the spray head (531).

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