Efficient circulating equipment for gas cylinder nitrogen replacement

Abstract

The invention provides efficient circulating equipment for nitrogen replacement of gas cylinders, which comprises a bottom plate, a circulating mechanism, a charging and discharging assembly, a linkage mechanism and a material taking and placing mechanism, the material taking and placing mechanism places the gas cylinders on a bearing platform and takes down the gas cylinders with nitrogen replaced from the bearing platform, and the circulating mechanism conveys the gas cylinders without nitrogen replacement to the charging and discharging assembly. The nitrogen filling and discharging assembly is matched with the linkage mechanism for nitrogen filling and discharging, after the filling and discharging operation is cyclically carried out for multiple times, the circulating mechanism conveys the gas cylinders subjected to nitrogen replacement to the material taking and discharging mechanism to be discharged, and the linkage mechanism can convert movement of the bearing platform into lifting movement of the filling and discharging assembly. Aligned connection with a gas cylinder opening and gas filling or gas discharging are achieved through lifting motion of the gas filling and discharging assembly, and the gas filling and discharging assembly can be automatically lifted after gas filling or gas discharging is completed and does not affect carrying of the circulating mechanism. Multiple charging and discharging operations can be completed on the gas cylinder through one-time circulation, so that the nitrogen concentration required by nitrogen replacement of the gas cylinder is achieved, and the working efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of nitrogen replacement technology, and more specifically to a high-efficiency circulation device for nitrogen replacement of gas cylinders. Background Technology

[0002] Nitrogen purging is a crucial safety process in the industrial gas industry. Its core principle utilizes the physical properties of inert gas (nitrogen) to replace potentially hazardous or unsuitable gases (usually air or other residual gases) within gas cylinders, thereby creating a clean and safe internal environment. Nitrogen purging typically employs a "fill-and-release" method: Filling involves connecting a nitrogen source to the cylinder to be purged via a pressure reducing valve, filling the cylinder with nitrogen to a certain pressure; venting involves opening the vent valve to allow the nitrogen-diluted gas mixture to escape into a waste gas tower. Repeating this process 2-3 times significantly reduces the concentration of the original gas within the cylinder.

[0003] Analysis of existing technologies reveals that traditional nitrogen replacement often involves manual operation. Workers move the gas cylinders to the vicinity of the nitrogen source, manually connect the cylinders to the source for filling, and then connect the cylinders to the exhaust tower to discharge the mixed gas inside. This process needs to be repeated 2 to 3 times, which not only consumes a lot of the workers' physical strength and time, but also results in low work efficiency as each worker can only handle one filling or exhaust operation. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention proposes a high-efficiency circulation device for nitrogen replacement of gas cylinders, thereby solving the technical problems mentioned in the background art, such as the low work efficiency caused by the manual replacement of nitrogen in gas cylinders, which not only consumes a lot of physical strength and time for workers, but also requires one worker to handle only one filling or venting operation.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency circulation device for nitrogen replacement of gas cylinders, comprising: The base plate has multiple sets of receiving platforms arranged in a circumferential direction for placing gas cylinders; A circulation mechanism, mounted on the base plate, drives multiple sets of the receiving platforms to move intermittently in a circumferential direction; Multiple sets of filling and discharging assemblies are provided, each of which is vertically and vertically mounted on the base plate. When lowered, each filling and discharging assembly can communicate with the gas cylinder on the corresponding receiving platform. A linkage mechanism is installed on the receiving platform and connected to the charging and discharging assembly to convert the movement of the receiving platform into driving the charging and discharging assembly to intermittently rise and fall.

[0006] Furthermore, the circulation mechanism includes: A circular track is installed on the base plate, and multiple sets of the receiving platforms are slidably arranged on the circular track. The track wheels are provided in two sets, both of which are set on the receiving platform, and the track wheels can be slidably installed on the annular track; A drive assembly, mounted on the base plate and connected to the receiving platform, drives the track wheel to move circumferentially on the circular track.

[0007] Furthermore, the driving component includes: The motor is fixedly mounted on the base plate, and a first gear is fixedly connected to the output shaft of the motor; A push rod is mounted on the track wheel; A worm gear is rotatably mounted on the base plate. A second gear is also installed at one end of the worm gear. The first gear meshes with the second gear, and the push rod can be engaged in the threaded gap of the worm gear.

[0008] Furthermore, the filling and discharging assembly includes: The lifting frame is provided in two sets, and the base plate is provided with two sets of support seats. The two sets of lifting frames are respectively and liftably mounted on the two sets of support seats. The lifting frame is also provided with a sliding groove, and an inflation connector and an exhaust connector are slidably arranged in the two sets of sliding grooves respectively; and Multiple sets of tension springs are provided, with each end of the tension spring connected to the lifting frame and the support base, respectively.

[0009] Furthermore, the linkage mechanism includes: Guide rods are provided on the receiving platform; and A guide assembly is provided on the lifting frame to convert the movement of the guide rod into driving the lifting frame to intermittently rise and fall.

[0010] Furthermore, the guiding component includes: A first inclined groove is arranged on the lifting frame. When the guide rod moves horizontally within the first inclined groove, it can drive the lifting frame and the inflation connector or the exhaust connector to move downwards. During the descent, the inflation connector or the exhaust connector can be coaxially aligned with and sleeved onto the gas cylinder opening. The second inclined groove is disposed on the lifting frame and communicates with the first inclined groove. The connection between the first inclined groove and the second inclined groove is offset from the axis of the inflation joint and the exhaust joint.

[0011] Furthermore, it also includes a material handling assembly, which comprises: A lifting cylinder is fixedly mounted on the base plate; A rotary cylinder is mounted on the lifting cylinder; and Two sets of gripper cylinders are symmetrically arranged at both ends of the rotary cylinder, and grippers are also installed on the gripper cylinders.

[0012] Furthermore, the receiving platform is provided with a countersunk hole to accommodate the gas cylinder.

[0013] Furthermore, adjacent receiving platforms are connected by connecting blocks.

[0014] Furthermore, elastic elements are provided on both sides of the inflation connector and the deflation connector, and the elastic elements abut against the inner wall of the chute.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The linkage mechanism of this equipment can convert the movement of the receiving platform into the lifting movement of the filling and discharging components. The lifting movement of the filling and discharging components can be used to align and connect with the gas cylinder opening for filling or discharging. After the gas cylinder is filled or discharging, it can automatically rise without affecting the circulation mechanism to transport the gas cylinder to the next station. When the equipment is operating normally, it can simultaneously perform nitrogen filling and discharging on multiple sets of gas cylinders. Only one cycle is needed to complete multiple filling and discharging operations on the gas cylinder to achieve the nitrogen concentration required for nitrogen replacement, which greatly improves work efficiency.

[0016] 2. The material handling components of this equipment enable simultaneous material handling and are equipped with a gripper cylinder that can open and close 180°, eliminating the need for horizontal avoidance actions and enabling rapid material handling. Furthermore, this equipment is fully automated, requiring no additional manual operation, and reduces the risks during the filling and venting process. Automation is beneficial for safe production management in factories. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This invention provides a three-dimensional structural schematic diagram of a high-efficiency circulation device for nitrogen replacement of gas cylinders; Figure 2 This invention provides a three-dimensional structural diagram of the circulation mechanism in a high-efficiency circulation device for nitrogen replacement of gas cylinders; Figure 3 This invention provides an explosion diagram of a high-efficiency circulating device for nitrogen replacement of gas cylinders, showing a release platform. Figure 4 This invention provides an exploded schematic diagram of the filling and discharging components in a high-efficiency circulation device for nitrogen replacement of gas cylinders; Figure 5 This invention provides a schematic diagram of the irregularly shaped trough assembly in a high-efficiency circulation device for nitrogen replacement of gas cylinders; Figure 6 This invention provides a three-dimensional structural schematic diagram of the drive component in a high-efficiency circulation device for nitrogen replacement of gas cylinders; Figure 7 This invention provides a three-dimensional structural diagram of the material handling component in a high-efficiency circulating device for nitrogen replacement of gas cylinders.

[0019] Figure label: 101. Base plate; 201. Circular track; 202. Track wheel; 203. Push rod; 204. Groove; 205. Receiving platform; 206. Countersunk hole; 207. Guide rod; 208. Connecting block; 301. Support base; 302. Lifting frame; 303. Slide groove; 304. Tension spring; 305. Inflation connector; 306. Exhaust connector; 307. Elastic element; 308. First inclined groove; 309. Second inclined groove; 401. Motor; 402. First gear; 403. Worm gear; 404. Second gear; 405. Lifting cylinder; 406. Rotary cylinder; 407. Gripper cylinder; 408. Gripper. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Those skilled in the art can make some non-essential improvements and adjustments to the present invention based on the above application content.

[0021] Example: like Figures 1 to 6 The present invention provides a high-efficiency circulation device for nitrogen replacement of gas cylinders, including a base plate 101. A circulation mechanism, a filling and discharging assembly, and a linkage mechanism are arranged on the base plate 101. A receiving platform 205 is installed on the circulation mechanism. Multiple receiving platforms are connected by connecting blocks 208. The circulation mechanism drives multiple receiving platforms 205 to move intermittently in a circumferential direction. After the filling and discharging assembly descends, it can communicate with the gas cylinder on the corresponding receiving platform 205. The linkage mechanism is connected to the filling and discharging assembly to convert the movement of the receiving platform 205 into driving the filling and discharging assembly to move intermittently up and down.

[0022] The circulation mechanism includes a ring track 201, track wheels 202, and a drive assembly. The drive assembly includes a motor 401, a first gear 402, a push rod 203, a worm gear 403, and a second gear 404. The ring track 201 is fixed on the base plate 101, and the track wheels 202 are engaged with the ring track 201, maintaining a constant distance between the tracks. The track wheels 202 have grooves 204 to facilitate more stable installation on the ring track 201. One end of the motor 401 is fixedly connected to the first gear 402. The worm gear 403 is rotatably mounted on the base plate 101, and one end is fixedly connected to the second gear 404. The first gear 402 and the second gear 404 mesh. The push rod 203 and the worm gear 403 are intermittently connected by threads. This equipment uses a ring track 201 to form a circulation mechanism, which greatly improves its load capacity and stability. Using the worm gear 403 as the drive method also allows for more precise control of the stopping position of the receiving platform 205.

[0023] like Figure 3 , 4 As shown in Figure 5, the filling and discharging assembly includes a lifting frame 302, a support base 301, a slide groove 303, a tension spring 304, an inflation connector 305, and an exhaust connector 306. The linkage mechanism includes a guide assembly and a guide rod 207. The guide assembly includes a first inclined groove 308 and a second inclined groove 309. The support base 301 is mounted on the base plate 101, and the lifting frame 302 is slidably mounted on the support base 301. The slide groove 303 is provided on the lifting frame 302. The two ends of the tension spring 304 are respectively connected to the lifting frame 302 and the support base 301. The inflation connector 305 and the exhaust connector 306 are respectively installed in different slide grooves 303. The two ends of the elastic element 307 abut against the slide groove 303 and the inflation connector 305 or the exhaust connector 306, so that the inflation connector 305 and the exhaust connector 306 can be reset after movement to ensure that they can be aligned with the gas cylinder opening next time. When the guide rod 207 enters the first inclined groove 308, the guide rod 207 moves forward and presses the first inclined groove. 308 causes the lifting frame 302 connected to the first inclined trough 308 to move downwards. The inflation connector 305 or exhaust connector 306 installed on the lifting frame 302 also moves downwards and engages with the gas cylinder opening during the descent. After successful engagement, the inflation connector 305 or exhaust connector 306 will perform two-way movement: one is to continue descending to open the gas cylinder valve for subsequent inflation and deflation; the other is to follow the gas cylinder horizontally to prevent the mechanism from jamming. After reaching the connection between the first inclined trough 308 and the second inclined trough 309, it will stay for a period of time to inflate or deflate. After inflation or deflation is completed, the guide rod 207 continues to move forward and will lift the second inclined trough 309, causing the inflation connector 305 or exhaust connector 306 to separate from the gas cylinder opening. When the equipment is operating normally, it can simultaneously perform nitrogen filling and deflation on multiple gas cylinders. Only one cycle is needed to complete multiple filling and deflation operations on the gas cylinder to achieve the nitrogen concentration required for gas cylinder nitrogen replacement, which greatly improves work efficiency.

[0024] like Figure 3 , 7 As shown, the material handling assembly includes a lifting cylinder 405, a rotating cylinder 406, a gripper cylinder 407, and grippers 408. The lifting cylinder 405 is mounted on the base plate 101, and the rotating cylinder 406 is mounted on the lifting cylinder 405. Two sets of gripper cylinders 407 are symmetrically arranged on the rotating cylinder 406, and multiple sets of grippers 408 are mounted on the gripper cylinders 407. The receiving platform 205 has a countersunk hole 206 for accommodating gas cylinders. The material handling assembly of this equipment enables simultaneous material handling. With the addition of a gripper cylinder 407 that can open and close 180°, the horizontal avoidance action is eliminated, enabling rapid material handling. Furthermore, this equipment is fully automated, requiring no additional manual operation. The nitrogen replacement station is a relatively dangerous station, and automation is beneficial for the factory's safe production management.

[0025] Specific usage and beneficial effects of the present invention: Support base 301 is mounted on base plate 101. Lifting frame 302 is slidably mounted on support base 301. Slide groove 303 is provided on lifting frame 302. Tension spring 304 is connected at both ends to lifting frame 302 and support base 301 respectively. Inflation connector 305 and exhaust connector 306 are respectively installed in different slide grooves 303. Elastic element 307 abuts at both ends against slide groove 303 and either inflation connector 305 or exhaust connector 306, ensuring that inflation connector 305 and exhaust connector 306 can return to their original position after movement, guaranteeing proper contact with the gas cylinder opening next time. The linkage mechanism of this equipment can convert the linear motion of the receiving platform 205 into the lifting motion of the filling and discharging components. The lifting motion of the filling and discharging components is used to align and connect with the gas cylinder opening for filling or discharging. After the gas cylinder is filled or discharging, it can automatically rise without affecting the circulation mechanism to transport the gas cylinder to the next station. When the equipment is operating normally, it can simultaneously perform nitrogen filling and discharging on multiple sets of gas cylinders. Only one cycle is needed to complete multiple filling and discharging operations on the gas cylinder to achieve the nitrogen concentration required for nitrogen replacement, which greatly improves work efficiency.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above. Modifications or improvements can be made to the present invention, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A high-efficiency circulation device for nitrogen replacement of gas cylinders, characterized in that, Including: The base plate (101) has multiple sets of receiving platforms (205) arranged in a circumferential direction for placing gas cylinders. A circulation mechanism, mounted on the base plate (101), drives multiple sets of receiving platforms (205) to move intermittently in a circumferential direction; Multiple filling and discharging assemblies are provided, each of which is vertically and vertically mounted on the base plate (101). When lowered, each filling and discharging assembly can communicate with the gas cylinder on the corresponding receiving platform (205). A linkage mechanism is provided on the receiving platform (205) and connected to the charging and discharging assembly to convert the movement of the receiving platform (205) into driving the charging and discharging assembly to intermittently rise and fall.

2. The high-efficiency circulation device for nitrogen replacement of gas cylinders according to claim 1, characterized in that: The circulation mechanism includes: A circular track (201) is installed on the base plate (101), and multiple sets of the receiving platforms (205) are slidably arranged on the circular track (201); Two sets of track wheels (202) are provided, both of which are mounted on the receiving platform (205), and the track wheels (202) are slidably mounted on the annular track (201); and A drive assembly, mounted on the base plate (101) and connected to the receiving platform (205), drives the track wheel (202) to move circumferentially on the annular track (201).

3. The high-efficiency circulation device for nitrogen replacement of gas cylinders according to claim 2, characterized in that: The driving component includes: The motor (401) is fixed on the base plate (101), and a first gear (402) is fixed on the output shaft of the motor (401). A push rod (203) is disposed on the track wheel (202); and The worm (403) is rotatably mounted on the base plate (101). A second gear (404) is also installed at one end of the worm (403). The first gear (402) meshes with the second gear (404), and the push rod (203) can be engaged in the thread gap of the worm (403).

4. The high-efficiency circulation device for nitrogen replacement of gas cylinders according to claim 1, characterized in that, The filling and discharging assembly includes: The lifting frame (302) is provided in two sets. Two sets of support seats (301) are provided on the base plate (101). The two sets of lifting frames (302) are respectively raised and lowered on the two sets of support seats (301). The lifting frame (302) is also provided with a sliding groove (303). An inflation connector (305) and an exhaust connector (306) are slidably disposed within each of the two sets of sliding grooves (303). Multiple sets of tension springs (304) are provided, and the two ends of the tension springs (304) are respectively connected to the lifting frame (302) and the support base (301).

5. The high-efficiency circulation device for nitrogen replacement of gas cylinders according to claim 4, characterized in that, The linkage mechanism includes: Guide rod (207) is disposed on the receiving platform (205); and A guide assembly is provided on the lifting frame (302) to convert the movement of the guide rod (207) into driving the lifting frame (302) to intermittently rise and fall.

6. The high-efficiency circulation device for nitrogen replacement of gas cylinders according to claim 5, characterized in that, The guiding component includes: The first inclined groove (308) is arranged on the lifting frame (302). When the guide rod (207) moves horizontally within the first inclined groove (308), it can drive the lifting frame (302) and the inflation connector (305) or the exhaust connector (306) to move downwards. During the descent, the inflation connector (305) or the exhaust connector (306) can be coaxially aligned with and sleeved with the gas cylinder opening. The second inclined groove (309) is disposed on the lifting frame (302) and communicates with the first inclined groove (308). The connection between the first inclined groove (308) and the second inclined groove (309) is misaligned with the axis of the inflation connector (305) and the exhaust connector (306).

7. The high-efficiency circulation device for nitrogen replacement of gas cylinders according to claim 1, characterized in that: It also includes a material handling assembly, which includes: A lifting cylinder (405) is fixed on the base plate (101); A rotary cylinder (406) is mounted on the lifting cylinder (405); and Two sets of gripper cylinders (407) are symmetrically arranged at both ends of the rotary cylinder (406), and grippers (408) are also installed on the gripper cylinders (407).

8. The high-efficiency circulation device for nitrogen replacement of gas cylinders according to claim 1, characterized in that, The receiving platform (205) is provided with a countersunk hole (206) to accommodate the gas cylinder.

9. The high-efficiency circulation device for nitrogen replacement of gas cylinders according to claim 1, characterized in that: The two adjacent receiving platforms (205) are connected by a connecting block (208).

10. A high-efficiency circulation device for nitrogen replacement of gas cylinders according to claim 4, characterized in that, Both sides of the inflation connector (305) and the exhaust connector (306) are provided with elastic elements (307), and the elastic elements (307) abut against the inner wall of the slide groove (303).

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