An ammonia storage tank cleaning device

Abstract

The application provides a liquid ammonia storage tank cleaning device and relates to the technical field of liquid ammonia storage.The device comprises a clamping mechanism for clamping a tank body, a mounting rack and a base frame, the clamping mechanism and the mounting rack are both mounted on the base frame, the mounting rack is provided with an extension mechanism, the end of the extension mechanism is rotatably provided with a frame body, a plurality of rotating frames are rotatably arranged on the frame body, and cleaning strips are arranged on the rotating frames; the rotating frames can rotate to push the cleaning strips close to the inner wall of the tank body, and the cleaning strips can deform along with the contour of the tank body and adhere to the inner wall of the tank body; the cleaning strips can be driven to be inclined or transversely arranged in the tank body by a driver; the rotating frames can rotate relative to the frame body and push the cleaning strips to move to the inner wall of the tank body and adhere to the inner wall of the tank body; the flexibility of the arc-shaped frame can make the cleaning strips deform when adhering to the inner wall of the tank body, so that the tank body is cleaned; the device can clean different vertical pipes and improve convenience for cleaning vertical, spherical and columnar tanks.

Description

Technical Field

[0001] This invention relates to the technical field of liquid ammonia storage, and more particularly to a cleaning device for liquid ammonia storage tanks. Background Technology

[0002] Liquid ammonia, also known as anhydrous ammonia, is a colorless liquid with a strong, pungent odor. It has a relative density of 0.77 (liquid), a melting point of -77.7℃, and a boiling point of -33.5℃. As an important chemical raw material, ammonia is typically liquefied from gaseous ammonia gas through pressurization or cooling for convenient transportation and storage. Liquid ammonia is readily soluble in water, forming ammonium ions (NH₄⁺) and hydroxide ions (OH⁻) upon dissolution. The solution is alkaline and cannot coexist with substances such as acetaldehyde, acrolein, and boron. It decomposes into ammonia and hydrogen at high temperatures. Liquid ammonia has a wide range of industrial applications. Due to its corrosive and volatile nature, it has a high rate of chemical accidents. Because of these properties, manual cleaning of the interior of liquid ammonia storage tanks poses significant safety risks. Therefore, automated cleaning devices are needed to clean the interior of hydraulic storage tanks. Liquid ammonia storage tanks are divided into vertical and horizontal types. Cleaning horizontal tanks is relatively simple, but vertical liquid ammonia storage tanks, due to height limitations, require more sophisticated cleaning equipment. Existing cleaning devices are unable to effectively clean the interior of vertical liquid ammonia storage tanks, significantly restricting their use. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a liquid ammonia sealed storage tank cleaning device to facilitate the cleaning of vertical liquid ammonia storage tanks.

[0004] Based on the technical problems existing in the background art, the present invention proposes a cleaning device for liquid ammonia storage tank, including a clamping mechanism for clamping the tank body, a mounting frame and a base frame. The mounting frame and the clamping mechanism are both mounted on the base frame. An extension mechanism is mounted on the mounting frame. A frame body is rotatably mounted at the end of the extension mechanism. Multiple rotating frames are rotatably mounted on the frame body. A cleaning strip is mounted on the rotating frame. The rotating frame can rotate to push the cleaning strip close to the inner wall of the tank, and the cleaning strip can deform with the contour of the tank body and conform to the inner wall of the tank body.

[0005] Preferably, the mounting frame includes a lifting mechanism, which is rotatably mounted on the base frame. One end of the extension mechanism is rotatably connected to the lifting mechanism, and a drive mechanism capable of driving the extension mechanism to rotate is mounted on the lifting mechanism.

[0006] Preferably, the lifting mechanism and the extension mechanism have the same driving direction, and both can drive the cleaning strip to extend into or remove from the tank.

[0007] Preferably, the extension mechanism includes a telescopic rod and a driver. One end of the telescopic rod is connected to a lifting mechanism and driven by a driving mechanism, and the other end is connected to a driver. The frame is rotatably connected to the driver, and the rotation axis of the frame relative to the driver is perpendicular to the rotation axis of the telescopic rod.

[0008] Preferably, the rotating frame is rotatably mounted on the frame body and can rotate relative to the frame body to form an X shape. One end of the rotating frame is hinged to an arc-shaped frame, and the other end of the rotating frame is rotatably connected to a connecting block. A cylinder is hinged to the frame body and connected to the connecting block. The cylinder can drive the connecting block to move closer to or away from the cylinder.

[0009] Preferably, both ends of the frame are hinged with bow-shaped frames, and a soft cleaning strip is connected between the bow-shaped frames.

[0010] Preferably, the bow-shaped frame is made of a tough material.

[0011] Preferably, the cleaning strip includes a connecting frame, a water spraying tube, and a cleaning cotton, wherein the tube is connected to the connecting frame, the connecting frame is mounted on an arc-shaped frame, and the cleaning cotton wraps around the tube.

[0012] Preferably, a flexible tube is connected to the tube body.

[0013] Preferably, the rotation axis of the rotating frame relative to the frame body and the rotation axis of the bow-shaped frame relative to the rotating frame are parallel to each other, and the bow-shaped frame and the frame body can be folded into a long strip by rotation.

[0014] Compared with existing technologies, the liquid ammonia storage tank cleaning device proposed in this invention adopts the above-mentioned technical solution and achieves the following technical effects:

[0015] In this invention, a cleaning strip can be tilted or moved laterally within a vertical bucket by a driver. A rotating frame can rotate relative to the frame and push the cleaning strip toward the inner wall of the bucket and make it fit against the inner wall. The flexibility of the bow-shaped frame allows the cleaning strip to deform when it fits against the inner wall of the bucket, thereby cleaning the inside of the bucket. When the cleaning strip is arranged longitudinally, it can quickly clean by rotating the cleaning strip once. When the cleaning strip is moved laterally, the depth inside the bucket can be adjusted by raising or lowering the telescopic rod or the lifting mechanism. At the same time, the cleaning strip can also be tilted to clean the inside of the bucket.

[0016] This invention addresses the cleaning of vertical, spherical, and pedestal-type tanks, enhancing the cleaning capabilities for different types of vertical pipes and improving convenience. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the frame structure, i.e., the cleaning strip, of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal wall structure of the frame of the present invention;

[0020] Figure 4 This is an enlarged schematic diagram of region a of the present invention.

[0021] In the diagram: 1. Clamping mechanism; 2. Mounting frame; 3. Base frame; 4. Extension mechanism; 5. Frame body; 6. Rotating frame; 7. Cleaning strip; 21. Lifting mechanism; 8. Drive mechanism; 41. Telescopic rod; 42. Driver; 9. Bow-shaped frame; 61. Connecting block; 62. Cylinder; 71. Connecting frame; 72. Tube body; 73. Cleaning cotton; 74. Hose. Detailed Implementation

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] Example

[0025] Please refer to Figures 1-4This invention proposes a cleaning device for a liquid ammonia storage tank, including a clamping mechanism 1 for clamping the tank, a mounting frame 2, and a base frame 3. The mounting frame 2 and the clamping mechanism 1 are both mounted on the base frame 3. The base frame 3 is rectangular in shape, but can also be other shapes. The mounting frame 2 and the clamping mechanism 1 are respectively mounted on two non-adjacent edges of the base frame 3. The clamping mechanism 1 can clamp the cylindrical tank. An extension mechanism 4 is mounted on the mounting frame 2. A frame body 5 is rotatably mounted on the end of the extension mechanism 4. The connection between the mounting frame 2 and the extension mechanism 4 is located directly above the clamped tank. The extension mechanism 4 can extend and retract to drive the frame body 5 into the tank. The maximum lateral length of the entire extension mechanism 4 and the frame body 5 is much smaller than the diameter of the tank. Multiple rotating frames 6 are rotatably mounted on the frame body 5. Cleaning strips 7 are mounted on the rotating frames 6. The rotating frames 6 can rotate and push the cleaning strips 7 close to the inner wall of the tank. The cleaning strips 7 can deform with the contour of the tank and fit the inner wall of the tank. The length of the cleaning strip 7 is less than the longitudinal length of the tank, so that the cleaning strip 7 can be fully inserted into the tank for cleaning. When the frame 5 enters the tank, it enters longitudinally. When the frame 5 is inside the tube 72, it can be rotated to tilt or move laterally inside the tube 72. Under the action of the rotating frame 6, the cleaning strip 7 can be formed into an arc shape inside the tank, conforming to the inner surface of the tank for cleaning.

[0026] In a specific embodiment, refer to Figure 1 , Figure 2 , Figure 3 The mounting frame 2 includes a lifting mechanism 21, which is rotatably mounted on the base frame 3. The main function of the lifting mechanism 21 is to perform longitudinal lifting of the frame 5 and the extension mechanism 4 over a large distance. In order to allow the frame 5 to be fully inserted into the tank or to remove the tank, the lifting mechanism 21 can adjust the horizontal position of the frame 5, that is, to prevent the frame 5 from being directly above the clamping mechanism 1 when not in use or when the tank needs to be placed, thus facilitating the placement of the tank. One end of the extension mechanism 4 is rotatably connected to the lifting mechanism 21, and the lifting mechanism 21 is equipped with a drive mechanism 8 that can drive the extension mechanism 4 to rotate. The main function of the extension mechanism 4 is to allow the cleaning strip 7 to be adjusted longitudinally over a short distance during the cleaning process inside the tube 72, cleaning tanks of different lengths, and simultaneously performing a comprehensive cleaning of the inner wall of the tank. In this invention, the rotation of the cleaning strip 7 is driven by the rotation of the extension mechanism 4. The tank is fixed on the clamping mechanism 1, and the drive mechanism 8 drives the extension mechanism 4 to rotate so that the cleaning strip 7 fits against the inner wall of the tank for cleaning. The rotation axis of the extension mechanism 4 is the same as the longitudinal axis of the tank.

[0027] In a further embodiment, the present invention uses a non-rotating can, but it can also use a rotating can, that is, the cleaning strip 7 extends into the can and fits against the inner wall of the can, the clamping arm of the clamping mechanism 1 clamps the can, and a rotatable roller is installed on the side of the clamping mechanism 1 that clamps the can, the roller fits against the outer wall of the can, so that the can rotates to achieve the cleaning effect.

[0028] In a specific embodiment, Figure 1 , Figure 2 , Figure 3 The lifting mechanism 21 and the extension mechanism 4 have the same driving direction, and both can drive the cleaning strip 7 to extend into or remove from the tank. Both the lifting mechanism 21 and the extension mechanism 4 are vertically adjustable. The lifting mechanism 21 uses a sliding block, and the extension mechanism 4 is mounted on the sliding block. The lifting mechanism 21 can avoid obstructing the placement of the tank by increasing the lateral length of the sliding block.

[0029] In a specific embodiment, Figure 1 , Figure 2 , Figure 3 The extension mechanism 4 includes a telescopic rod 41 and a driver 42. In this invention, the telescopic rod 41 is relatively thin, which makes it easy to extend into the tank. One end of the telescopic rod 41 is connected to the lifting mechanism 21 and driven by the driving mechanism 8, and the other end is connected to the driver 42. The telescopic rod 41 is installed longitudinally. One end of the telescopic rod 41 is rotatably mounted on the sliding block of the lifting mechanism 21. The driving mechanism 8 is also mounted on the sliding block and connected to the telescopic rod 41. The frame 5 is rotatably connected to the driver 42. The rotation axis of the frame 5 relative to the driver 42 is perpendicular to the rotation axis of the telescopic rod 41. The connection point between the frame 5 and the driver 42 is the center position of the frame 5. The rotation axis of the frame 5 is transverse, and the rotation axis of the telescopic rod 41 is longitudinal.

[0030] In a specific embodiment, Figure 1 , Figure 2 , Figure 3The rotating frame 6 is rotatably mounted on the frame body 5 and can rotate relative to the frame body 5 to form an X shape. The middle part of the rotating frame 6 is rotatably connected to the frame body 5. When one end of the rotating frame 6 is pulled or pushed, the rotating frame 6 will form an X shape with the frame body 5. The longest distance between the end of the rotating frame 6 and the frame body 5 is when the rotating frame 6 is perpendicular to the frame body 5. Therefore, the maximum rotation of the rotating frame 6 on the frame body 5 is 90 degrees. One end of the rotating frame 6 is hinged to an arc-shaped frame 9, and the other end of the rotating frame 6 is rotatably connected to a connecting block 61. A cylinder 62 is hinged to the frame body 5 and connected to the connecting block 61. The cylinder 62 can drive the connecting block 61 to... The cylinder 62 moves closer to or further away from the frame 5. The length of the rotating frame 6 is the same, and the distance from the end of the rotating frame 6 to the hinge point of the rotating frame 6 is also the same. The bow-shaped frame 9, which is rotatably mounted on the rotating frame 6, is elastic. The connection point between the bow-shaped frame 9 and the rotating frame 6 is the middle of the bow-shaped frame 9. One end of the cylinder 62 is hinged to the frame 5, and the other end is hinged to the connecting block 61. The connecting block 61 is hinged to the end of the rotating frame 6. Therefore, when the cylinder 62 retracts, the rotating frame 6 can rotate and continuously tend to be perpendicular to the frame 5. When the cylinder 62 extends, it can cause the rotating frame 6 to retract towards the frame 5 and fold.

[0031] In a specific embodiment, Figure 1 , Figure 2 , Figure 3 Both ends of the frame 5 are hinged with bow-shaped frames 9, and a flexible cleaning strip 7 is connected between the bow-shaped frames 9. The bow-shaped frames 9 mainly provide support for the cleaning strip 7. In this invention, there are multiple bow-shaped frames 9. When the cleaning strip 7 is attached to the inner wall of the tank, it can provide support and deformation for the inner wall of the tank with different curvatures, thereby adapting to the curvature changes of the inner wall of the tank.

[0032] In a specific embodiment, Figure 1 , Figure 2 , Figure 3 The bow-shaped frame 9 is made of a flexible material. That is, the bow-shaped frame 9 can deform and return to its original shape.

[0033] In a specific embodiment, Figure 4 The cleaning strip 7 includes a connecting frame 71, a water-spraying pipe 72, and a cleaning cotton 73. The pipe 72 is connected to the connecting frame 71, and the connecting frame 71 is mounted on the bow-shaped frame 9. The cleaning cotton 73 wraps around the pipe 72. The pipe 72 has multiple small water spray holes, which wet the cleaning cotton 73 after spraying water. The cleaning cotton 73 also has round holes corresponding to the small holes, so that the inner wall of the tank can be rinsed by water pressure when cleaning the inner wall of the tank.

[0034] In a specific embodiment, Figure 3 A hose 74 is connected to the pipe body 72. The hose 74 is used for water injection, so that the cleaning strip 7 can be cleaned by injecting water into the tank.

[0035] In a specific embodiment, Figure 1 , Figure 2 , Figure 3 The rotation axis of the rotating frame 6 relative to the frame body 5 and the rotation axis of the bow-shaped frame 9 relative to the rotating frame 6 are parallel to each other. The bow-shaped frame 9 and the frame body 5 can be folded into a long strip by rotation.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A cleaning device for a liquid ammonia storage tank, characterized in that, The device includes a clamping mechanism (1) for clamping the tank, a mounting frame (2) and a base frame (3). The mounting frame (2) and the clamping mechanism (1) are both mounted on the base frame (3). An extension mechanism (4) is mounted on the mounting frame (2). A frame body (5) is rotatably mounted on the end of the extension mechanism (4). Multiple rotating frames (6) are rotatably mounted on the frame body (5). The rotating frame (6) is rotatably mounted on the frame (5) and can rotate relative to the frame (5) to form an X shape. One end of the rotating frame (6) is hinged to an arc-shaped frame (9), and the other end of the rotating frame (6) is rotatably connected to a connecting block (61). A cylinder (62) is hinged on the frame (5) and connected to the connecting block (61). The cylinder (62) can drive the connecting block (61) to move closer to or away from the cylinder (62). Both ends of the frame (5) are hinged with bow-shaped frames (9), and a soft cleaning strip (7) is connected between the bow-shaped frames (9); the bow-shaped frames (9) are made of tough material; The rotating frame (6) can rotate to push the cleaning strip (7) close to the inner wall of the tank, and the cleaning strip (7) can deform with the contour of the tank and fit the inner wall of the tank.

2. The liquid ammonia storage tank cleaning device according to claim 1, characterized in that, The mounting frame (2) includes a lifting mechanism (21), which is rotatably mounted on the base frame (3). One end of the extension mechanism (4) is rotatably connected to the lifting mechanism (21), and a drive mechanism (8) that can drive the extension mechanism (4) to rotate is mounted on the lifting mechanism (21).

3. The liquid ammonia storage tank cleaning device according to claim 2, characterized in that, The lifting mechanism (21) and the extension mechanism (4) have the same driving direction, and both can drive the cleaning strip (7) to extend into or out of the tank.

4. The liquid ammonia storage tank cleaning device according to claim 1, characterized in that, The extension mechanism (4) includes a telescopic rod (41) and a driver (42). One end of the telescopic rod (41) is connected to the lifting mechanism (21) and driven by the driving mechanism (8), and the other end is connected to the driver (42). The frame (5) is rotatably connected to the driver (42), and the rotation axis of the frame (5) relative to the driver (42) is perpendicular to the rotation axis of the telescopic rod (41).

5. The liquid ammonia storage tank cleaning device according to claim 1, characterized in that, The cleaning strip (7) includes a connecting frame (71), a water spraying tube (72), and a cleaning cotton (73). The tube (72) is connected to the connecting frame (71), and the connecting frame (71) is mounted on the bow-shaped frame (9). The cleaning cotton (73) wraps around the tube (72).

6. The liquid ammonia storage tank cleaning device according to claim 5, characterized in that, A flexible tube (74) is connected to the tube body (72).

7. The liquid ammonia storage tank cleaning device according to claim 1, characterized in that, The rotation axis of the rotating frame (6) relative to the frame body (5) and the rotation axis of the bow-shaped frame (9) relative to the rotating frame (6) are parallel to each other. The bow-shaped frame (9) and the frame body (5) can be folded into a long strip by rotation.

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