A p-nitrobenzoic acid storage tank

Abstract

This utility model relates to the field of nitrobenzoic acid storage technology, and more particularly to a p-nitrobenzoic acid storage tank, including a tank body and a tank cover detachably connected to the upper end of the tank body, as well as a screw and a drive mechanism. One end of the screw is rotatably connected to the inside of the tank body, and a scraping element for scraping the inner wall of the tank body is threadedly connected to the screw. The scraping element is slidably connected to the inner wall of the tank body. The drive mechanism is located on the tank cover and is used to drive the screw to rotate, thereby scraping the inner wall of the tank body by the scraping element. In this utility model, when the tank cover is connected to the tank body, the drive mechanism drives the screw to rotate, and the screw rotation simultaneously drives the scraping element to slide up and down on the inner wall of the tank body, dynamically scraping off the material adhering to the inner wall of the tank body. At this time, the cleaning process in the closed state of the tank body can reduce the damage caused by manual cleaning of the inner wall of the tank body.

Description

Technical Field

[0001] This utility model relates to the field of nitrobenzene acid storage technology, and in particular to a p-nitrobenzene acid storage tank. Background Technology

[0002] p-Nitrobenzoic acid, as an important pharmaceutical intermediate and organic synthesis raw material, is usually stored in solid or molten form. When p-nitrobenzoic acid is stored in a tank, whether in a solid or molten state, some of the material will adhere to or clump on the inner wall of the storage tank after the tank is emptied, requiring cleaning.

[0003] In existing technologies, cleaning is generally done by manually scraping the inner wall of the storage tank after opening it. During this process, there may be residual odor inside the storage tank. Nitrobenzoic acid is somewhat irritating, and its odor may irritate the human respiratory tract, eyes, etc. Inhalation can damage the respiratory system, nervous system, etc.

[0004] Therefore, based on the above situation, it is necessary to design a p-nitrobenzoic acid storage tank to solve the above problems. Utility Model Content

[0005] This invention provides a p-nitrobenzoic acid storage tank to solve the problems in the prior art.

[0006] The technical problem solved by this utility model is achieved by the following technical solution:

[0007] A p-nitrobenzoic acid storage tank includes a tank body and a tank cover detachably connected to the upper end of the tank body. It also includes a screw and a drive mechanism. One end of the screw is rotatably connected to the inside of the tank body. A scraping element for scraping the inner wall of the tank body is threadedly connected to the screw. The scraping element is slidably connected to the inner wall of the tank body. The drive mechanism is located on the tank cover and is used to drive the screw to rotate, thereby scraping the inner wall of the tank body by the scraping element.

[0008] Preferably, the driving mechanism includes a drive gear rotatably connected to the inside of the can lid and a driven gear meshing with the drive gear and rotatably connected to the inside of the can lid. The diameter of the drive gear is larger than the diameter of the driven gear. The driven gear has a square groove, and the screw has a square part that matches the square groove.

[0009] Preferably, the can lid has an observation port corresponding to the position of the driven gear, and a sealing cap is threaded onto the observation port.

[0010] Preferably, the tank body is provided with a sealing gasket.

[0011] Preferably, the screw is threaded with a tapered member whose inner diameter gradually increases from top to bottom, and the tapered member is connected above the scraper.

[0012] Preferably, the part of the scraper that contacts the inner wall of the tank is covered with an elastic material.

[0013] The beneficial effects of this utility model are: when the can lid is connected to the can body, the drive mechanism drives the screw to rotate, and the screw rotates while the scraper slides up and down on the inner wall of the can body to dynamically scrape off the material adhering to the inner wall of the can body. At this time, the cleaning process in the closed state of the can body can reduce the damage caused by manually cleaning the inner wall of the can body. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 A three-dimensional structural schematic diagram provided for this utility model;

[0016] Figure 2 Schematic diagram of the cross-sectional structure provided by this utility model Figure 1 ;

[0017] Figure 3 Schematic diagram of the cross-sectional structure provided by this utility model Figure 2 ;

[0018] Figure 4 A partial three-dimensional structural diagram provided for this utility model Figure 1 ;

[0019] Figure 5 A partial three-dimensional structural diagram provided for this utility model Figure 2 ;

[0020] Figure 6 A partial three-dimensional structural diagram provided for this utility model Figure 3 .

[0021] In the diagram, 1. Tank body; 2. Tank lid; 3. Screw; 4. Scraper; 41. Collar; 42. Connecting rod; 43. Scraper ring; 5. Drive mechanism; 51. Drive gear; 52. Driven gear; 6. Rocker arm; 7. Square groove; 8. Square part; 9. Observation port; 10. Sealing cap; 11. Sealing gasket; 12. Conical part; 13. Feed pipe; 14. Discharge port. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0023] Reference Figures 1-6 As shown, a p-nitrobenzoic acid storage tank includes a tank body 1 and a lid 2 detachably connected to the upper end of the tank body 1. In use, the lid 2 can be fixed to the open end of the tank body 1 via threaded connection, snap-fit, or other methods to seal the p-nitrobenzoic acid inside the tank body 1. Before placing the lid 2 on the tank body 1, p-nitrobenzoic acid can be poured into the tank body 1. However, this method of filling increases the possibility of contact with the operator. To improve safety, a feed pipe 13 that communicates with the tank body 1 can be provided on the lid 2. A sealing plug can be threaded onto the feed pipe 13. When p-nitrobenzoic acid needs to be added to the tank body 1, the sealing plug is removed, and the p-nitrobenzoic acid is fed into the tank body 1 through an external pipe connected to the feed pipe 13. When the p-nitrobenzoic acid inside the tank body 1 needs to be used, a discharge port 14 with a valve can be provided at the lower end of the tank body 1. Opening the valve releases the p-nitrobenzoic acid. As nitrobenzoic acid gradually decreases, some residue may adhere to the inner wall of the tank 1. A screw 3 is rotatably connected inside the tank 1, and a scraper 4 is threaded onto the screw 3. The scraper 4 is slidably connected to the inner wall of the tank 1. The scraper 4 may include a collar 41 threadedly connected to the screw 3 and a scraper ring 43 connected to the collar 41 through multiple connecting rods 42. The outside of the scraper ring 43 has a slider that slides against the inner wall of the tank 1. When p-nitrobenzoic acid enters the tank 1 from the feed pipe 13, it can fall under the scraper 4 through the gap between adjacent connecting rods 42. During use, the screw 3 rotates, causing the scraper 4 to slide up and down tightly against the inner wall of the tank 1. In order to make the screw 3 rotate, a drive mechanism 5 is provided on the tank cover 2. The drive mechanism 5 can drive the screw 3 to rotate, thereby realizing the scraper 4 scraping the material on the inner wall of the tank 1, reducing the harm to the human body caused by opening the tank 1 for scraping.

[0024] Reference Figure 4As shown, furthermore, to facilitate the rotation of the screw 3, the drive mechanism 5 includes a drive gear 51 rotatably connected inside the can lid 2 and a driven gear 52 meshing with the drive gear 51. A square groove 7 is provided on the driven gear 52, and a square part 8 adapted to the square groove 7 is provided on the screw 3. When the can lid 2 is placed on the can body 1, the square part 8 on the screw 3 will be locked inside the square groove 7. A rocker arm 6 is provided on the drive gear 51. By rotating the screw 3, the drive gear 51 is driven to rotate. Due to the connection between the square part 8 and the square groove 7, when the drive gear 51 drives the driven gear 52 to rotate, it will drive the screw 3 to rotate. In order to make it easier to rotate the rocker arm 6 to drive the screw 3 to rotate, the diameter of the drive gear 51 is larger than the diameter of the driven gear 52, so that the screw 3 can be driven to rotate with a smaller torque, reducing the labor intensity of the operator.

[0025] Reference Figure 3 As shown, furthermore, in order to ensure that the square part 8 fits perfectly into the square groove 7 when the lid 2 is placed on the can body 1, the lid 2 has an observation port 9 corresponding to the position of the driven gear 52. A sealing cap 10 is threaded onto the observation port 9. When the lid 2 is placed on the can body 1, the sealing cap 10 is opened. Through the observation port 9, the operator can directly observe the relative position of the square groove 7 and the square part 8 on the screw 3 when installing the lid 2. The driven gear 52 can be rotated and adjusted by reaching into the observation port 9 to accurately adjust it so that the square part 8 can be inserted into the square groove 7, avoiding the problem of the square part 8 and the square groove 7 not being aligned in time due to blind installation.

[0026] Reference Figure 2 , Figure 3 As shown, furthermore, in order to improve the sealing between the lid 2 and the body 1, a sealing gasket 11 is provided on the body 1. The sealing gasket 11 can be made of rubber, silicone or other materials. When the lid 2 is placed on the body 1, the lid 2 and the sealing gasket 11 are in close contact. The sealing gasket 11 will undergo elastic deformation and tightly fill the tiny gaps between the lid 2 and the body 1 to avoid environmental pollution. At the same time, p-nitrobenzoic acid is prone to moisture absorption and deterioration, and may react with certain substances in the air, affecting its purity. The presence of the sealing gasket 11 can prevent external moisture, oxygen and dust and other impurities from entering the interior of the body 1, maintaining a relatively stable storage environment inside the body 1.

[0027] Reference Figures 2-6As shown, further, in order to further improve the sealing effect of p-nitrobenzoic acid inside the tank 1, a conical part 12 with an inner diameter that gradually increases from top to bottom is threaded onto the screw 3. The conical part 12 is connected above the scraper 4. When storing p-nitrobenzoic acid, the scraper 4 and the conical part 12 are located at the upper end of the tank 1. Correspondingly, the inner diameter of the inner wall at the upper opening of the tank 1 gradually increases from top to bottom. When the conical part 12 is located at the upper end of the tank 1, the inclined surface on the conical part 12 fits and contacts the inclined surface between the inner wall of the tank 1, thereby further improving the sealing effect of the tank 1. When it is necessary to inject p-nitrobenzoic acid into the tank 1, the screw 3 drives the conical part 12 and the scraper 4 to move downward. At this time, the p-nitrobenzoic acid can fall into the tank 1 from the gap between the conical part 12 and the inner wall of the tank 1 and the gap between the two adjacent connecting rods 42 on the scraper 4.

[0028] Reference Figure 2 , Figure 3 As shown, furthermore, in order to improve the scraping effect on the inner wall of the can 1, the part of the scraping component 4 that contacts the inner wall of the can 1 is wrapped with an elastic material, that is, the outer surface of the scraping ring 43 includes an elastic material. The elastic material can be rubber, silicone or other materials. The scraping component 4 provides overall support, while the elastic material allows the scraping ring 3 to contact the inner wall of the can 1 more tightly, improving the scraping effect. Moreover, the wrapping of the elastic material will not damage the inside of the can 1.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A storage tank for p-nitrobenzoic acid, comprising a tank body (1) and a tank cover (2) detachably connected to the upper end of the tank body (1), characterized in that, Also includes; A screw (3) is rotatably connected to the inside of the tank (1) at one end. A scraper (4) for scraping the inner wall of the tank (1) is threaded onto the screw (3). The scraper (4) is slidably connected to the inner wall of the tank (1). The driving mechanism (5) is located on the can cover (2) and is used to drive the screw (3) to rotate so that the scraper (4) can scrape the inner wall of the can (1).

2. The p-nitrobenzoic acid storage tank according to claim 1, characterized in that, The drive mechanism (5) includes a drive gear (51) rotatably connected to the inside of the can lid (2) and a driven gear (52) meshing with the drive gear (51) and rotatably connected to the inside of the can lid (2). The diameter of the drive gear (51) is larger than the diameter of the driven gear (52). A square groove (7) is provided on the driven gear (52). A square part (8) that matches the square groove (7) is provided on the screw (3).

3. A p-nitrobenzoic acid storage tank according to claim 2, characterized in that, The can lid (2) has an observation port (9) corresponding to the position of the driven gear (52), and a sealing cap (10) is threaded onto the observation port (9).

4. A p-nitrobenzoic acid storage tank according to claim 1, characterized in that, The tank (1) is provided with a sealing gasket (11).

5. A p-nitrobenzoic acid storage tank according to claim 1, characterized in that, The screw (3) is threaded with a tapered part (12) whose inner diameter gradually increases from top to bottom, and the tapered part (12) is connected above the scraper (4).

6. A p-nitrobenzoic acid storage tank according to claim 1, characterized in that, The part of the scraper (4) that contacts the inner wall of the tank (1) is covered with an elastic material.

Images