Liquid nitrogen tank cleaning device

Abstract

The utility model discloses a liquid nitrogen tank cleaning device. The device comprises a working table, the positioning part comprises an adjusting assembly and is arranged on the workbench; the two clamping rings are located below the adjusting assembly; the overturning assembly is connected with the clamping rings and connected with the adjusting assembly; the cleaning part comprises a spraying pipe arranged in the workbench, and a spraying head is arranged at the top of the spraying pipe; the water conveying pipe is arranged in the workbench; the plurality of cleaning brushes are arranged at the top of the spraying pipe; the transmission assembly is arranged in the workbench, and one end of the transmission assembly is connected with the spraying pipe; according to the cleaning device, the adjusting assembly and the overturning assembly are matched to enable the clamping rings to clamp the tank body and overturn the tank body until the tank opening faces downwards, the transmission assembly drives the spraying pipe to stretch into the tank body and drive the tank body to rotate, and the water conveying pipe conveys a cleaning medium to the spraying pipe and sprays the cleaning medium in a rotating mode through the spraying head. And meanwhile, the spraying pipe drives the cleaning brushes to rotate together to brush the inner wall of the tank body, so that the labor intensity of workers is reduced, and the cleaning efficiency can be further improved.

Description

Technical Field

[0001] This utility model relates to the field of liquid nitrogen tank technology, and in particular to a liquid nitrogen tank cleaning device. Background Technology

[0002] A liquid nitrogen tank is a cryogenic storage device that utilizes the extremely low temperature characteristics of liquid nitrogen to preserve biological samples for a long time. Its core function is to maintain the low temperature environment of liquid nitrogen through vacuum insulation technology. It is commonly used in the fields of biomedicine, aerospace industry and other technical fields.

[0003] Existing liquid nitrogen tank cleaning methods mainly rely on manual scrubbing of the tank walls using tools such as long-handled brushes and cleaning agents. However, this method requires a lot of time and manpower and has low cleaning efficiency.

[0004] Therefore, a liquid nitrogen tank cleaning device that can improve cleaning efficiency is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned shortcomings by providing a liquid nitrogen tank cleaning device that improves cleaning efficiency.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a liquid nitrogen tank cleaning device, including a workbench;

[0007] Positioning components, including:

[0008] Adjustment components are provided on the worktable;

[0009] Two clamping rings are arranged opposite each other and located below the adjustment component, which is used to move the two clamping rings closer to or further apart from each other.

[0010] A flipping component is connected to each of the clamping rings, and one end of the component is connected to the adjusting component. It is used to drive the clamping rings to rotate and to adjust the tank to an inverted state.

[0011] Cleaning components, including:

[0012] A spray pipe is vertically installed in the workbench, and a nozzle is provided at the top.

[0013] A water supply pipe is installed inside the workbench, with one end rotatably connected to the bottom of the spray pipe;

[0014] Multiple cleaning brushes are circumferentially distributed on the top of the spray pipe and hinged thereto;

[0015] A transmission component is installed inside the workbench, with one end connected to the spray pipe to drive the spray pipe to move vertically up and down and rotate, thereby driving the spray pipe to extend from bottom to top into the tank for cleaning.

[0016] Furthermore, the top of the nozzle is provided with a spray hole for conveying the cleaning medium upward, and another cleaning brush is also hinged to the top of the nozzle.

[0017] Furthermore, the spray pipe is composed of a first sleeve that is vertically rotatably inserted into the workbench and a second sleeve that is axially slidably inserted into the first sleeve.

[0018] The workbench is also provided with a cavity, the bottom of the first sleeve is rotatably inserted into the cavity, and the outer surface of the second sleeve is provided with a reciprocating thread groove.

[0019] The transmission assembly includes:

[0020] The first gear is located at the bottom of the first sleeve;

[0021] A first power unit is disposed in the cavity, and a second gear that meshes with the first gear is provided on its moving end;

[0022] A constraint ring is set on the workbench and surrounds the connection between the first sleeve and the second sleeve. The inner wall of the constraint ring is provided with a guide block that slides in cooperation with the reciprocating thread groove.

[0023] Furthermore, the adjustment component includes:

[0024] A support frame is provided on top of the workbench;

[0025] The lead screw is rotatably inserted into the support frame, and its surface has two sections of threads with opposite directions of rotation.

[0026] Two movable stages are slidably mounted on the support frame and respectively screwed into the corresponding threaded sections on the lead screw;

[0027] The second power unit is mounted on the support frame, and its moving end is connected to the lead screw to drive the lead screw to rotate.

[0028] Two connecting rods are vertically installed at the bottom of each of the moving platforms, and the bottom end of each connecting rod is connected to the flipping assembly.

[0029] Furthermore, the flipping component includes:

[0030] Two connecting platforms are rotatably mounted on each of the clamping rings, and their tops are connected to the corresponding connecting rods;

[0031] The third power unit is mounted on one of the connecting platforms, and its moving end is connected to the rotation axis of the corresponding clamping ring.

[0032] Furthermore, the workbench is equipped with a support ring for receiving the tank.

[0033] Furthermore, the workbench is provided with a recycling chamber, and a drainage hole is provided in the chamber.

[0034] The beneficial effects of this utility model are reflected in:

[0035] In this invention, when the liquid nitrogen tank is placed on the workbench, the adjusting component and the flipping component work together to clamp the tank body with each clamping ring and flip it so that the tank opening faces downward. Then, the transmission component drives the spray pipe to extend into the tank body and drive it to rotate. The water supply pipe delivers the cleaning medium to the spray pipe and sprays it through the rotating nozzle, improving the spraying efficiency. At the same time, the spray pipe drives each cleaning brush to rotate together, so that each cleaning brush rotates upward to scrub the inner wall of the tank, reducing the intensity of manual labor and further improving the cleaning efficiency. Attached Figure Description

[0036] Figure 1 This is a perspective view of the liquid nitrogen tank cleaning device described in this utility model;

[0037] Figure 2 This is a first cross-sectional view of the liquid nitrogen tank cleaning device of this utility model;

[0038] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0039] Figure 4 for Figure 2 Enlarged view at point B;

[0040] Figure 5 for Figure 2 A magnified view at point C;

[0041] Figure 6 This is a second cross-sectional view of the liquid nitrogen tank cleaning device of this utility model.

[0042] In the picture:

[0043] 1. Workbench; 11. Chamber; 12. Recovery Chamber; 13. Support Frame; 131. Through Hole; 2. Positioning Component; 21. Adjustment Component; 211. Support Frame; 2111. Telescopic Rod; 2112. Adjustment Frame; 212. Slide Groove; 213. Lead Screw; 214. Moving Table; 215. Connecting Rod; 216. Second Power Unit; 22. Clamping Ring; 23. Tilting Component; 231. Connecting Table; 232. Third Power Unit; 3. Cleaning Component; 31. Spray Pipe; 311. First Sleeve; 312. Second Sleeve; 3121. Reciprocating Thread Groove; 32. Spray Nozzle; 33. Water Supply Pipe; 34. Cleaning Brush; 35. Transmission Component; 351. First Gear; 352. First Power Unit; 353. Second Gear; 354. Constraint Ring; 3541. Water Outlet; 355. Guide Block. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0045] Please see Figures 1-6 This utility model discloses a liquid nitrogen tank cleaning device, including a workbench 1 for receiving the tank;

[0046] Positioning component 2 includes:

[0047] Adjustment component 21 is set on worktable 1;

[0048] Two clamping rings 22 are located below the adjusting component 21 and are arranged opposite each other on both sides of the tank. The adjusting component 21 is used to move the two clamping rings 22 closer to each other or further apart.

[0049] The flipping component 23 is connected to each clamping ring 22, and one end of it is connected to the adjusting component 21. It is used to drive the clamping ring 22 to rotate and to adjust the tank to the inverted state.

[0050] Cleaning component 3 includes:

[0051] The spray pipe 31 is vertically and rotatably mounted in the workbench 1, and a nozzle 32 is provided on its top. The nozzle 32 has multiple spray holes evenly distributed in the circumferential direction.

[0052] Water supply pipe 33 is installed inside the workbench 1. One end of it is rotatably connected to the bottom of the spray pipe 31, and the other end is connected to an external conveying component (not shown in the figure). The conveying component conveys the cleaning medium to the spray pipe 31 through the water supply pipe 33.

[0053] Multiple flexible cleaning brushes 34 are circumferentially distributed on the top of the spray pipe 31 and hinged thereto;

[0054] The transmission component 35 is installed inside the workbench 1, with one end connected to the spray pipe 31 to drive the spray pipe 31 to rise and fall vertically and rotate, thereby driving the spray pipe to extend from bottom to top into the tank for cleaning.

[0055] In practice, when the liquid nitrogen tank needs to be cleaned, the worker places the tank on the workbench 1 and uses the adjusting component 21 to move the two clamping rings 22 closer together until they clamp the tank. Then, the adjusting component 21 moves the tank up so that it leaves the workbench 1. The flipping component 23 rotates each clamping ring 22 to flip the tank so that the opening faces down. At this time, the transmission component 35 moves the spray pipe 31 up and rotates until it is inserted into the tank. At the same time, the conveying component delivers the cleaning medium to the spray pipe 31 through the water supply pipe 33. The cleaning medium is sprayed out through the nozzle 32 and sprayed onto the inner wall of the tank under the action of centrifugal force. Each cleaning brush 34 rotates upward under the action of centrifugal force and scrubs the inner wall of the tank. After cleaning, the transmission component 35 moves the spray pipe 31 down and retracts into the workbench 1. Then, the flipping component 23 flips the tank back to the correct position through each clamping ring 22.

[0056] In this invention, when the liquid nitrogen tank is placed on the workbench 1, the adjusting component 21 and the flipping component 23 cooperate to clamp the tank body with each clamping ring 22 and flip it so that the tank opening faces downward. Then, the transmission component 35 drives the spray pipe 31 to extend into the tank body and drive it to rotate. The water supply pipe 33 delivers the cleaning medium to the spray pipe 31 and sprays it through the rotating nozzle 32, thereby improving the spraying efficiency. At the same time, the spray pipe 31 drives each cleaning brush 34 to rotate together, so that each cleaning brush 34 rotates upward under the action of centrifugal force to scrub the inner wall of the tank body, reducing the intensity of manual labor and further improving the cleaning efficiency.

[0057] Preferably, the cleaning medium can be a neutral detergent.

[0058] It should be noted that each clamping ring 22 has a rubber pad on its clamping surface, which increases the friction between the clamping ring 22 and the tube body while reducing damage to the surface of the tank.

[0059] In one embodiment, the nozzle 32 has a nozzle hole at its top for conveying cleaning medium upwards, and another cleaning brush 34 is also hinged to the top of the nozzle 32.

[0060] With this design, when the nozzle 32 rotates, some of the cleaning medium washes the bottom of the tank through the opening at the top of the nozzle 32. At the same time, under the action of centrifugal force, the cleaning brush 34 at the top of the nozzle 32 opens and scrubs the bottom of the tank, further improving cleaning efficiency.

[0061] In one embodiment, the spray pipe 31 is composed of a first sleeve 311 vertically rotatably inserted into the workbench 1 and a second sleeve 312 axially slidably inserted inside the first sleeve 311, and the connection between the first sleeve 311 and the second sleeve 31 is a dynamic sealing fit.

[0062] The workbench 1 is also provided with a chamber 11. The bottom of the first sleeve 311 is rotatably inserted into the chamber 11. The outer surface of the second sleeve 312 is provided with a reciprocating thread groove 3121.

[0063] The transmission assembly 35 includes a first gear 351 disposed at the bottom of the first sleeve 311. The chamber 11 is also provided with a first power unit 352, and a second gear 353 meshing with the first gear 351 is provided on its moving end. The first power unit 352 drives the first sleeve 311 to rotate by meshing the first gear 351 and the second gear 353.

[0064] The workbench 1 is provided with a constraint ring 354, and the constraint ring 354 surrounds the connection between the first sleeve 311 and the second sleeve 312. The inner wall of the constraint ring 354 is provided with a guide block 355 that slides with the reciprocating thread groove 3121. When the second sleeve 312 rotates, the guide block 355 is used to guide the second sleeve 312 to move vertically back and forth.

[0065] With this design, when the can opening is facing down, the first power unit 352 drives the second gear 353 to rotate so that it meshes with the first gear 351, thereby driving the first sleeve 311 to rotate. Then, the first sleeve 311 drives the second sleeve 312 to rotate together. Its guide block 355 is slidably set in the reciprocating thread groove 3121 and rotates with the second sleeve 312 to guide it to make vertical reciprocating movements, thereby realizing the simultaneous vertical lifting and rotation of the nozzle 32.

[0066] It should be noted that the constraint ring 354 has multiple drain ports 3541 evenly distributed in the circumferential direction. When the liquid in the tank flows out, each drain port 3541 is used to discharge the liquid located at the connection between the first sleeve 311 and the second sleeve 312 to avoid liquid accumulation.

[0067] In one embodiment, the adjustment assembly 21 includes a support frame 211;

[0068] The support frame 211 consists of telescopic rods 2111 respectively arranged on both sides of the workbench 1 and an adjustment frame 2112 connected to the telescopic end of each telescopic rod 2111. The adjustment frame 2112 is provided with a sliding groove 212 along its length direction.

[0069] The adjusting frame 2112 is rotatably inserted with a lead screw 213, which is set in the slide groove 212. The lead screw 213 has two threaded sections with opposite directions on its surface. Two moving platforms 214 are slidably arranged in the slide groove 212. Each moving platform 214 is screwed into the corresponding threaded section on the lead screw 213. Each moving platform 214 has a vertical connecting rod 215 at its bottom, and the bottom end of each connecting rod 215 is connected to the flipping assembly 23.

[0070] One end of the adjustment unit is provided with a second power unit 216, the moving end of which is connected to the lead screw 213 for driving the lead screw 213 to rotate.

[0071] With this design, when the tank needs to be clamped, the second power unit 216 drives the lead screw 213 to rotate, causing each moving platform 214 to drive the two clamping rings 22 to move closer to each other through the connecting rod 215 until the outer wall of the tank is clamped. At this time, the telescopic ends of each telescopic rod 2111 rise, causing the tank to leave the worktable 1. Then, the flipping assembly 23 drives each clamping ring 22 to rotate, thereby flipping the tank.

[0072] It should be noted that each telescopic boom 2111 can be a hydraulic lifting boom from the existing technology, and each hydraulic lifting boom is driven by the same oil circuit, thereby achieving synchronous lifting of each hydraulic lifting boom.

[0073] Preferably, the second power unit 216 may be a motor as known in the prior art.

[0074] In one embodiment, the flipping assembly 23 includes a connecting platform 231 disposed on each clamping ring 22 and connected to the top of a corresponding connecting rod 215. Each clamping ring 22 is rotatably connected to the corresponding connecting platform 231. A third power unit 232 is provided on one of the connecting platforms 231, and its moving end is connected to the rotation axis of the corresponding clamping ring 22.

[0075] With this design, when the tank needs to be flipped, each moving platform 214 drives the two clamping rings 22 to move closer to each other to clamp the tank. At this time, each clamping ring 22 applies a clamping force to the tank in a direction close to the tank's axis. Then, the third power unit 232 drives the corresponding clamping ring 22 to rotate, and at the same time, the clamping force drives the other clamping ring 22 to rotate together.

[0076] It should be noted that each clamping ring 22 has sufficient friction at the rotation axis of the moving stage 214, and the clamping ring 22 is unlikely to rotate accidentally without the action of external force.

[0077] Preferably, the third power unit 232 can be a motor from the prior art.

[0078] In one embodiment, the workbench 1 has a recovery chamber 12 for storing the cleaning medium sprayed by the nozzle 32, and the chamber also has a drain outlet that communicates with an external recovery component (not shown in the figure).

[0079] With this design, when the cleaning component 3 cleans the tank, the waste liquid generated during the cleaning process flows through the tank opening into the recovery chamber 12 under the action of gravity for collection, so as to facilitate subsequent treatment.

[0080] In one embodiment, the workbench 1 is provided with a support frame 13 for receiving the tank. The support frame 13 is located above the recovery chamber 12 and has a leakage hole feature for draining liquid on its surface. A through hole 131 for the second sleeve 312 to extend is also provided at its center.

[0081] With this design, when the tank needs to be cleaned, the staff places the tank on the support frame 13 so that the positioning component 2 can clamp the tank. Then the transmission component 35 drives the second sleeve 312 to move upward and extend into the tank through the through hole 131 to clean it.

[0082] During the cleaning process, the waste liquid in the tank can flow into the recovery chamber 12 through each leak hole to avoid liquid accumulation. After the tank is cleaned, the transmission component 35 drives the second sleeve 312 to move downward to below the support frame 13 to avoid interfering with the tank's rotation back to the correct position.

[0083] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0084] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0085] Additionally, "multiple" refers to two or more.

[0086] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A liquid nitrogen tank cleaning device, characterized in that, Includes a workbench (1); Positioning component (2), including: An adjustment component (21) is provided on the worktable (1); Two clamping rings (22) are arranged opposite each other and located below the adjustment component (21), which is used to drive the two clamping rings (22) to move closer or further apart from each other; The flipping component (23) is connected to each of the clamping rings (22), and one end of it is connected to the adjusting component (21) to drive the clamping rings (22) to rotate, thereby adjusting the tank to an inverted state; Cleaning component (3), including: A spray pipe (31) is vertically installed in the workbench (1), and a nozzle (32) is provided on its top. A water supply pipe (33) is installed inside the workbench (1), with one end rotatably connected to the bottom of the spray pipe (31); Multiple cleaning brushes (34) are circumferentially distributed on the top of the spray pipe (31) and hinged thereto; A transmission assembly (35) is installed inside the workbench (1), with one end connected to the spray pipe (31) to drive the spray pipe (31) to rise and fall vertically and rotate, thereby driving the spray pipe (31) to extend from bottom to top into the tank for cleaning.

2. The liquid nitrogen tank cleaning device according to claim 1, characterized in that: The nozzle (32) has a nozzle hole at the top for conveying the cleaning medium upward, and another cleaning brush (34) is also hinged to the top of the nozzle (32).

3. The liquid nitrogen tank cleaning device according to claim 1, characterized in that: The spray pipe (31) is composed of a first sleeve (311) that is vertically rotatably inserted into the workbench (1) and a second sleeve (312) that is axially slidably inserted into the first sleeve (311); The workbench (1) is also provided with a chamber (11), the bottom of the first sleeve (311) is rotatably inserted into the chamber (11), and the outer surface of the second sleeve (312) is provided with a reciprocating thread groove (3121). The transmission assembly (35) includes: The first gear (351) is disposed at the bottom of the first sleeve (311); The first power unit (352) is disposed in the chamber (11), and its moving end is provided with a second gear (353) that meshes with the first gear (351); A constraint ring (354) is provided on the workbench (1) and surrounds the connection between the first sleeve (311) and the second sleeve (312). The inner wall of the constraint ring (354) is provided with a guide block (355) that slides with the reciprocating threaded groove (3121).

4. The liquid nitrogen tank cleaning device according to claim 1, characterized in that: The adjustment component (21) includes: A support frame (211) is provided on the top of the workbench (1); The lead screw (213) is rotatably inserted into the support frame (211), and its surface has two threaded sections with opposite directions of rotation. Two movable stages (214) are slidably mounted on the support frame (211) and respectively engaged with the corresponding threaded sections on the lead screw (213); The second power unit (216) is mounted on the support frame (211), and its moving end is connected to the lead screw (213) to drive the lead screw (213) to rotate. Two connecting rods (215) are vertically installed at the bottom of each of the moving platforms (214), and the bottom end of each connecting rod (215) is connected to the flipping assembly (23).

5. The liquid nitrogen tank cleaning device according to claim 4, characterized in that: The flipping component (23) includes: Two connecting platforms (231) are rotatably mounted on each of the clamping rings (22), and their tops are connected to the corresponding connecting rods (215); The third power unit (232) is disposed on one of the connecting platforms (231), and its moving end is connected to the rotation axis of the corresponding clamping ring (22).

6. The liquid nitrogen tank cleaning device according to claim 1, characterized in that: The workbench (1) is provided with a support frame (13) for receiving the tank.

7. The liquid nitrogen tank cleaning device according to claim 1, characterized in that: The workbench (1) has a recycling chamber (12) with a drainage hole.

Images