Alkaline water storage tank for 2, 3-dichloropyridine production

Abstract

The utility model discloses an alkaline water storage tank for producing 2, 3-dichloropyridine, which belongs to the technical field of storage devices and comprises a tank body, a tank cover is arranged on the top surface of the tank body, rectangular plates are symmetrically and fixedly arranged on the peripheral side of the tank body, electric push rods are fixedly arranged on the top surfaces of the two rectangular plates, and connecting frames are transversely and fixedly arranged at the output ends of the two electric push rods. The opposite side faces of the two connecting frames are fixedly arranged on the two side faces of the tank cover, a driving motor is fixedly arranged in the center of the top face of the tank cover, the output end of the driving motor penetrates through the tank cover and is transversely and fixedly provided with a transverse plate, scraping plates used for cleaning sediments are longitudinally and fixedly arranged on the two side faces of the transverse plate, and the transverse plate and the two scraping plates are located in an inner cavity of the tank body. And base plates for pushing sediments are fixedly arranged on the bottom surfaces of the two scraping plates and are positioned in the inner cavity of the tank body. According to the alkaline water storage tank for 2, 3-dichloropyridine production, the problem that sediments accumulated on the inner bottom surface of the tank body are difficult to clean is solved, and the production efficiency of 2, 3-dichloropyridine is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of storage devices, in particular to an alkaline water storage tank for 2,3-dichloropyridine production. Background Art

[0002] 2,3-Dichloropyridine is a key intermediate in the synthesis of chlorantraniliprole. Chlorantraniliprole is an excellent, highly effective, broad-spectrum insecticide for Lepidoptera, major beetles, and whiteflies, with reliable and stable control effects at low doses. Therefore, the production of 2,3-dichloropyridine is an important step in the synthesis of chlorantraniliprole. Generally, alkaline water storage tanks are required for the production of 2,3-dichloropyridine. When alkaline water is stored for a long time, it easily dissolves carbon dioxide, causing sediment to form in the alkaline water and accumulate on the bottom surface of the tank. Since the height of the storage tank is often set high, it is difficult for personnel to clean the sediment on the bottom surface of the tank, which makes it easy for the sediment to affect the use of the alkaline water in the tank, thereby reducing the efficiency of 2,3-dichloropyridine production.

[0003] For example, the existing Chinese publication number is CN210556931U, which describes an alkaline water storage tank for 2,3-dichloropyridine production: "It includes a liquid storage tank and a cooling box, the cooling box being bolted to the top of the liquid storage tank, the liquid storage tank being provided with a storage cavity, and the inner wall of the storage cavity being provided with a metering groove."

[0004] It can be seen that the cited patent document has the problem that it is difficult to clean the deposits accumulated on the bottom surface of the tank body. Utility Model Content

[0005] The purpose of the utility model is to provide an alkaline water storage tank for 2,3-dichloropyridine production to solve the problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an alkaline water storage tank for the production of 2,3-dichloropyridine, comprising a tank body, a tank cover provided on the top surface of the tank body, rectangular plates symmetrically fixed on the circumference of the tank body, electric push rods fixed on the top surfaces of the two rectangular plates, connecting frames fixed transversely on the output ends of the two electric push rods, opposite sides of the two connecting frames fixed on the two side surfaces of the tank cover, a driving motor fixed at the center position of the top surface of the tank cover, the output end of the driving motor passes through the tank cover and is fixed transversely with a transverse plate, scrapers for cleaning sediments are longitudinally fixed on both side surfaces of the transverse plate, the transverse plate and the two scrapers are located in the inner cavity of the tank body, and the opposite sides of the two scrapers are in contact with the inner wall of the tank body, and pads for pushing sediments are fixed on the bottom surfaces of the two scrapers and located in the inner cavity of the tank body.

[0007] Preferably, a pressure reducing box is fixedly provided on the top surface of the tank cover and located on one side of the driving motor, and a conveying pipe is connected to the bottom surface of the pressure reducing box.

[0008] Preferably, the free end of the delivery pipe passes through the inner cavity of the tank cover, and a plurality of springs are equidistantly connected to the inner top surface of the pressure reducing box.

[0009] Preferably, the free ends of the plurality of springs are laterally connected to a limit plate, and the four side surfaces of the limit plate are in frictional contact with the four inner walls of the pressure reducing box.

[0010] Preferably, exhaust ports are provided on both sides of the pressure reducing box, and the two exhaust ports are both arranged above the limiting plate.

[0011] Preferably, the upper half of the peripheral side of the tank body is connected with a feeding pipe for conveying alkaline water into the interior of the tank body.

[0012] Preferably, the lower half of the peripheral side of the tank body is connected to a discharge pipe for discharging alkaline water, and the inner side wall of the discharge pipe is connected to a filter screen for filtering alkaline water and sediment.

[0013] Compared with the prior art, the technical effects and advantages of this utility model are:

[0014] The alkaline water storage tank for 2,3-dichloropyridine production, through the arrangement of the scraper, can enable the drive motor to drive the scraper to rotate through the transverse plate, so that the scraper rotates in contact with the inner wall of the tank, thereby allowing the scraper to scrape off the sediment remaining on the inner wall of the tank. The arrangement of the pad allows the sediment after the alkaline water and carbon dioxide are dissolved to fall onto the pad. The pad is driven by the electric push rod to move upward through the tank cover, so that the pad is taken out of the tank body and the sediment on the surface of the pad is cleaned, thereby avoiding the problem that the sediment is on the inner bottom surface of the tank body and is difficult for workers to clean, thereby affecting the use of the alkaline water. The efficiency of 2,3-dichloropyridine production is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 It is a cross-sectional view of the tank body of the present utility model;

[0018] Figure 3 This is a schematic structural diagram of the scraper and backing plate of the utility model;

[0019] Figure 4 For the utility model Figure 2 Schematic diagram of the structure at point A in the middle.

[0020] Description of reference numerals:

[0021] In the figure: 1. Tank body; 2. Tank cover; 3. Rectangular plate; 4. Electric push rod; 5. Connecting frame; 6. Drive motor; 7. Horizontal plate; 8. Scraper; 9. Pad; 10. Feed pipe; 11. Discharge pipe; 12. Filter; 13. Pressure reducing box; 14. Delivery pipe; 15. Spring; 16. Limit plate; 17. Exhaust port. DETAILED DESCRIPTION

[0022] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features known in the art are not described to avoid confusion with the present invention.

[0023] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside shown in the figures of the present invention, and are explained here together.

[0024] The connection method can be bonding, welding, bolt connection, etc., which shall be based on actual needs.

[0025] like Figures 1 to 4 The alkaline water storage tank shown in the figure is used for the production of 2,3-dichloropyridine, including a tank body 1, a tank cover 2 is provided on the top surface of the tank body 1, a card slot is opened on the top surface of the tank body 1, and a card block is installed on the bottom surface of the tank cover 2. After the tank cover 2 is placed on the top surface of the tank body 1, the card block will enter the inner cavity of the card slot, thereby improving the sealing between the tank body 1 and the tank cover 2. The inner side walls of the tank body 1 and the tank cover 2 are both installed with sealing strips, which can also improve the sealing of the tank body 1 and the tank cover 2.

[0026] The upper half of the side of the tank body 1 is connected to a feed pipe 10 for conveying alkaline water into the tank body 1. Personnel can convey the alkaline water required for the production of 2,3-dichloropyridine into the tank body 1 through the feed pipe 10 for storage. The lower half of the side of the tank body 1 is connected to a discharge pipe 11 for discharging alkaline water. The inner wall of the discharge pipe 11 is connected to a filter 12 for filtering alkaline water and sediment. The discharge pipe 11 is externally connected to a water pump. The alkaline water in the tank body 1 can be discharged from the tank body 1 through the discharge pipe 11 through the external water pump for use in the production of 2,3-dichloropyridine. The filter 12 can isolate the alkaline water and sediment to prevent some sediment from being discharged from the tank body 1 along with the alkaline water.

[0027] Rectangular plates 3 are symmetrically fixed on the circumference of the tank body 1, and electric push rods 4 are fixed on the top surfaces of the two rectangular plates 3. Connecting frames 5 are fixed laterally on the output ends of the two electric push rods 4, and the opposite sides of the two connecting frames 5 are fixed on the two sides of the tank cover 2. The two electric push rods 4 are connected through the same circuit, and the circuit is externally connected to a PLC control panel, so that personnel can synchronize the operation of the two electric push rods 4 through the PLC control panel, so that the two electric push rods 4 can respectively drive the connecting frames 5 to move upward, so that the two connecting frames 5 can drive the tank cover 2 to move upward, so that the tank body 1 and the tank cover 2 are separated, which is convenient for cleaning the interior of the tank body 1 and the sediment.

[0028] The two scrapers 8 are fixedly provided with a driving motor 6 at the center position of the top surface of the tank cover 2. The output end of the driving motor 6 passes through the tank cover 2 and is fixedly provided with a horizontal plate 7 in the horizontal direction. Scrapers 8 for cleaning the sediment are fixedly provided on both sides of the horizontal plate 7 in the longitudinal direction. The horizontal plate 7 and the two scrapers 8 are both in the inner cavity of the tank body 1, and the opposite sides of the two scrapers 8 are in contact with the inner wall of the tank body 1. When the alkali water is discharged and the sediment in the tank body 1 needs to be cleaned, the driving motor 6 is turned on, and the driving motor 6 drives the horizontal plate 7 to rotate, which can drive the two scrapers 8 to rotate. Since the driving motor 6 is fixedly provided at the center position of the top surface of the tank cover 2, the two scrapers 8 will respectively rotate in contact with the inner wall of the tank body 1 when they rotate, so that the two scrapers 8 can scrape the sediment left on the inner wall of the tank body 1.

[0029] The bottom surface of the two scrapers 8 and the inner cavity of the tank body 1 are fixed with a pad 9 for pushing the sediment. Since the two scrapers 8 will drive the pad 9 to rotate when they rotate, the drive motor 6 can reduce the speed to avoid the sediment being carried away by the pad 9 when it rotates, and the pad 9 is arranged in the lower half of the inner cavity of the tank body 1, so after the alkali water produces sediment, it will fall onto the pad 9. At the same time, the sediment scraped off by the scraper 8 will also fall onto the top surface of the pad 9. After the sediment on the inner wall of the tank body 1 is cleaned, the drive motor 6 is stopped and the electric push rod 4 is turned on, so that the electric push rod 4 can drive the pad 9 to move upward through the connecting frame 5, the tank cover 2, the drive motor 6, the cross plate 7 and the scraper 8, so that the pad 9 can be removed from the inner cavity of the tank body 1, which is convenient for the staff to clean the sediment and also convenient for cleaning the inside of the tank body 1, avoiding the sediment on the inner bottom surface of the tank body 1 and making it difficult for the staff to clean, thereby affecting the use of alkali water, thereby improving the efficiency of 2,3-dichloropyridine production.

[0030] A pressure reducing box 13 is fixed on the top surface of the tank cover 2 and located on one side of the driving motor 6. The bottom surface of the pressure reducing box 13 is connected to a delivery pipe 14. The free end of the delivery pipe 14 passes through the inner cavity of the tank cover 2. A plurality of springs 15 are equidistantly connected to the inner top surface of the pressure reducing box 13. The free ends of the plurality of springs 15 are laterally connected to a limiting plate 16. The four sides of the limiting plate 16 are in frictional contact with the four inner walls of the pressure reducing box 13. Exhaust ports 17 are provided on both sides of the pressure reducing box 13. Both exhaust ports 17 are arranged above the limiting plate 16. The alkaline water in the tank body 1 will vaporize as the temperature changes, but The vaporized gas will pass through the delivery pipe 14 and enter the pressure reducing box 13. When the space inside the pressure reducing box 13 is filled with gas and the alkaline water is still generating gas, the gas will gradually press against the limit plate 16 and push the limit plate 16 to move upward, thereby squeezing the spring 15. When the limit plate 16 moves to above the exhaust port 17, the gas will be discharged from the pressure reducing box 13 from the exhaust port 17, thereby reducing the pressure of the gas in the tank body 1. After the pressure is reduced, the limit plate 16 will return to its original position due to the rebound of the spring 15. The pressure reducing operation can prevent the pressure inside the tank body 1 from gradually increasing and causing an explosion.

[0031] Working principle:

[0032] The alkaline water storage tank for 2,3-dichloropyridine production delivers the alkaline water required for the production of 2,3-dichloropyridine to a tank body 1 through a delivery pipe 10 for storage. When the alkaline water is needed, the alkaline water can be discharged from the tank body 1 through an external water pump and a discharge pipe 11 for use in the production of 2,3-dichloropyridine. After long-term storage of the alkaline water, the alkaline water will dissolve carbon dioxide, thereby forming a precipitate that falls onto the top surface of the pad 9. When the precipitate needs to be removed to avoid affecting the use of the alkaline water, the drive motor 6 is turned on to drive the two scrapers 8 to rotate through the transverse plate 7, so that the two scrapers 8 can rotate in contact with the inner wall of the tank body 1. , so that the scraper 8 can scrape off the sediment left on the inner wall of the tank body 1, and then drop it onto the pad 9. After scraping, the driving motor 6 is stopped, and the electric push rod 4 is turned on at this time, so that the electric push rod 4 drives the tank cover 2 to move upward through the connecting frame 5, so that the tank cover 2 is separated from the tank body 1, and the pad 9 is driven upward by the driving motor 6, the horizontal plate 7 and the scraper 8, so that the pad 9 can be moved out of the inner cavity of the tank body 1, and the sediment on the top surface of the pad 9 can be cleaned, avoiding the sediment on the inner bottom surface of the tank body 1, which makes it difficult for the staff to clean it, thereby affecting the use of alkaline water, thereby improving the efficiency of 2,3-dichloropyridine production.

[0033] It should be noted that, in this article, relational terms such as one and two are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "including an element defined by ... does not exclude the presence of other identical elements in the process, method, article or device that includes the element."

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An alkaline water storage tank for 2,3-dichloropyridine production, comprising a tank body (1), characterized in that: The top surface of the tank body (1) is provided with a tank cover (2), and rectangular plates (3) are symmetrically fixed on the circumference of the tank body (1). The top surfaces of the two rectangular plates (3) are fixed with electric push rods (4), and the output ends of the two electric push rods (4) are fixed with connecting frames (5) in the transverse direction. The opposite sides of the two connecting frames (5) are fixed on the two side surfaces of the tank cover (2). A driving motor (6) is fixed at the center position of the top surface of the tank cover (2), and the output end of the driving motor (6) passes through the tank cover (2) and is fixed with a transverse plate (7) in the transverse direction. Scrapers (8) for cleaning sediments are fixed longitudinally on both sides of the transverse plate (7). The transverse plate (7) and the two scrapers (8) are both located in the inner cavity of the tank body (1), and the opposite sides of the two scrapers (8) are in contact with the inner wall of the tank body (1). The bottom surfaces of the two scrapers (8) and located in the inner cavity of the tank body (1) are fixed with pads (9) for pushing sediments.

2. The alkaline water storage tank for 2,3-dichloropyridine production according to claim 1, characterized in that: A pressure reducing box (13) is fixedly provided on the top surface of the tank cover (2) and located on one side of the driving motor (6), and a conveying pipe (14) is connected to the bottom surface of the pressure reducing box (13).

3. The alkaline water storage tank for 2,3-dichloropyridine production according to claim 2, characterized in that: The free end of the delivery pipe (14) penetrates the inner cavity of the tank cover (2), and a plurality of springs (15) are equidistantly connected to the inner top surface of the pressure reduction box (13).

4. The alkaline water storage tank for 2,3-dichloropyridine production according to claim 3, characterized in that: The free ends of the plurality of springs (15) are laterally connected to a limiting plate (16), and the four side surfaces of the limiting plate (16) are in frictional contact with the four inner walls of the pressure reducing box (13).

5. The alkaline water storage tank for 2,3-dichloropyridine production according to claim 4, characterized in that: Exhaust ports (17) are provided through both sides of the pressure reducing box (13), and both exhaust ports (17) are arranged above the limiting plate (16).

6. The alkaline water storage tank for 2,3-dichloropyridine production according to claim 1, characterized in that: The upper half of the peripheral side of the tank body (1) is connected to a delivery pipe (10) for delivering alkaline water into the interior of the tank body (1).

7. The alkaline water storage tank for 2,3-dichloropyridine production according to claim 1, characterized in that: The lower half of the peripheral side of the tank body (1) is connected to a discharge pipe (11) for discharging alkaline water, and the inner side wall of the discharge pipe (11) is connected to a filter screen (12) for filtering alkaline water and sediment.

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