A gas cylinder auxiliary material adding mechanism and its control method

Abstract

This invention discloses a gas cylinder auxiliary material adding mechanism and its control method, comprising an auxiliary material tank for containing the auxiliary material to be added and a cylinder for providing power. The auxiliary material tank is connected to the gas cylinder via an auxiliary material pipe. The cylinder includes a first cylinder, a second cylinder, and a feeding cylinder. The first cylinder drives the second cylinder to move synchronously. The first cylinder and the second cylinder are connected, and the second cylinder is connected to the feeding cylinder. The second cylinder is positioned above the gas cylinder. This invention provides a gas cylinder auxiliary material adding mechanism and its control method, realizing the automation and intelligent addition of auxiliary materials before gas cylinder filling.

Description

Technical Field

[0001] This invention relates to the field of gas cylinder filling equipment, and in particular to a gas cylinder auxiliary material adding mechanism and its control method. Background Technology

[0002] Gas-filled oxygen, also known as "portable oxygen respirator" or "small-sized oxygen canister," is characterized by its high oxygen content, small size, portability, and ease of use.

[0003] Currently, most of the mechanisms used for adding auxiliary materials to gas cylinders cannot achieve controllable and adjustable addition of auxiliary materials or controllable and adjustable cylinder pressing speed. The auxiliary materials can only be filled at once, and when different auxiliary materials need to be added, they cannot automatically select to draw different auxiliary materials, requiring frequent addition of auxiliary materials.

[0004] For example, an "automatic bed material adding system" disclosed in Chinese patent literature, publication number CN112747310A, includes a slag bin, a first boiler, a second boiler, a variable frequency electric feeder, a vibrating screen, a buffer bin, a sending device, and a conveying pipeline. A discharge pipe is fixed at the bottom of the slag bin, and a variable frequency electric feeder is installed at the bottom of the discharge pipe. A vibrating screen is connected to the bottom of the variable frequency electric feeder, and a buffer bin is installed at the bottom of the vibrating screen. A sending device is set below the buffer bin. One end of a gas pipeline is connected to an air inlet pipe, and an air storage tank is installed at the lower end of the air inlet pipe. One end of the air storage tank is connected to an air compressor, and the end of the air storage tank away from the air compressor is connected to the air inlet pipe. A first supplementary air pipe is connected between the air inlet pipe and the ash-gas mixer, and a second supplementary air pipe is connected between the lower end of the air inlet pipe and the conveying pipeline. The disadvantages are that it cannot control the amount of excipients added or the speed of bottle pressing. The excipients can only be added at once, and when different excipients need to be added, it cannot automatically select and pump different excipients, requiring frequent addition of excipients. Summary of the Invention

[0005] The purpose of this invention is to overcome the problem that the gas cylinder auxiliary material adding mechanism in the prior art cannot automatically pick up the auxiliary material, and to provide a gas cylinder auxiliary material adding mechanism and its control method to realize the automation and intelligence of adding auxiliary materials before filling the gas cylinder.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A gas cylinder auxiliary material adding mechanism includes:

[0008] An auxiliary material container, used to hold the auxiliary materials to be added;

[0009] A gas cylinder for storing auxiliary materials, wherein the gas cylinder is connected to the auxiliary material barrel via an auxiliary material pipe;

[0010] A power unit for providing power includes a first cylinder, a second cylinder, and a feeding cylinder. The first cylinder drives the second cylinder to move synchronously. The first cylinder is connected to the second cylinder, and the second cylinder is connected to the feeding cylinder. The second cylinder is located above the air tank.

[0011] A control system, which is used to control the movement of the power unit.

[0012] In this invention, the auxiliary material tank is used to hold the auxiliary materials to be added, and the power unit is used to provide power. The first cylinder starts to press down, and at the same time, the first cylinder drives the second cylinder to press down the gas tank. The first cylinder and the second cylinder are connected, and the pressing speed of the cylinder is easily adjusted by a speed regulating valve. The second cylinder is connected to the feeding cylinder through an auxiliary material pipe, and the feeding cylinder is connected to the auxiliary material tank through an auxiliary material pipe, so that the auxiliary materials can enter the gas tank from the auxiliary material tank through the auxiliary material pipe for adding auxiliary materials. The control system includes a PLC programmable controller, an HMI human-machine interface, a cylinder control system, an operating system, and several sensors. The human-machine interface, also known as the user interface, is the medium for interaction and information exchange between the system and the user. It realizes the conversion between the internal form of information and the form that humans can accept. The gas tank adds auxiliary materials efficiently and intelligently. The HMI human-machine interface is combined with the PLC programmable controller for control, the amount of auxiliary materials added is controllable and adjustable, and the pressing speed of the bottle is adjustable and controllable. The metering of auxiliary materials can be achieved by setting time parameters through the HMI human-machine interface.

[0013] Preferably, the first cylinder is connected to the second cylinder via a pipe, and the pipe is equipped with a speed regulating valve. The pipe is an air pipe, and the speed regulating valve on the air pipe changes the airflow velocity entering the cylinder, thereby controlling the cylinder's movement speed.

[0014] Preferably, the first cylinder is connected to a solenoid valve, and both the air inlet and outlet of the first cylinder are connected to a tee. The tee is connected to the second cylinder via an air inlet pipe. Since the two cylinders themselves generate friction, they cannot be completely synchronized. First, one solenoid valve controls one cylinder, and a tee is added to each of the original air inlet and outlet areas, and an air pipe is introduced into the other cylinder to achieve synchronized operation of the first and second cylinders.

[0015] Preferably, the auxiliary material pipe includes a first auxiliary material pipe and a second auxiliary material pipe. The auxiliary material tank is connected to the feeding cylinder via the first auxiliary material pipe, and the feeding cylinder is connected to the second cylinder via the second auxiliary material pipe. A one-way valve is provided on the second auxiliary material pipe. The auxiliary material in the auxiliary material tank is first drawn into the feeding cylinder through the first auxiliary material pipe, and then transferred to the air tank below the second cylinder through the second auxiliary material pipe. The one-way valve on the second auxiliary material pipe ensures that the material can only be transferred from the direction of the feeding cylinder to the direction of the second cylinder, preventing backflow and avoiding reverse flow of the material. Adding different auxiliary materials to the auxiliary material tank allows for automatic selection of different auxiliary materials to be drawn.

[0016] Preferably, the first cylinder is equipped with a limit sensor. When the second cylinder moves downward and fully engages with the air tank, the first cylinder senses the limit sensor. The limit sensor is connected to the control system, and the lower auxiliary material feeding port opens to allow material to be fed. The feeding metering is adjusted according to time. After a certain period of time, the cylinder begins to reset, the first cylinder reverses its direction, and the second cylinder retracts away from the air tank.

[0017] Preferably, the upper part of the gas tank is provided with a compression opening and closing structure, which is connected to the control system. The compression opening and closing structure closes simultaneously as the second cylinder retracts away from the gas tank to prevent leakage of auxiliary materials.

[0018] Preferably, the first cylinder is a time-delay cylinder.

[0019] Preferably, four gas cylinders are used. Adding auxiliary materials to all four cylinders simultaneously is efficient and convenient.

[0020] Preferably, the extrusion opening and closing structure includes an upper extrusion section mounted on a second cylinder and a lower moving section mounted at the gas tank port. The upper extrusion section and the lower moving section are adapted to each other. The auxiliary material tube also includes a third auxiliary material tube, which passes through the middle of the upper extrusion section. The upper end of the third auxiliary material tube is connected to the second auxiliary material tube, and the lower end of the third auxiliary material tube is laterally open. A connecting plate is fixedly installed inside the gas tank. The lower surface of the lower moving section is connected to the upper surface of the connecting plate by a return spring. The upper extrusion section is driven by the second cylinder, and the lower moving section is connected to the connecting plate inside the gas tank by a return spring. The upper extrusion section and the lower moving section abut against each other. When the upper extrusion section moves downward, it pushes the lower moving section into the gas tank. At this time, the material enters the empty tank through the third auxiliary material tube. The lateral opening of the third auxiliary material tube facilitates the addition of auxiliary material. After the auxiliary material is added, the upper extrusion section moves upward, and the lower moving section is returned to the gas tank opening by the return spring. A sealing ring is provided at the contact point between the lower moving section and the bottle opening to improve the sealing effect of the auxiliary material.

[0021] A method for controlling a gas cylinder auxiliary material adding mechanism includes the following steps:

[0022] S1, button start, the base turntable grabs the gas cylinder and rotates it into place;

[0023] S2, the solenoid valve controls the first cylinder to begin pressing down;

[0024] S3, the first cylinder moves while driving the second cylinder to press down the air tank;

[0025] S4, when the second cylinder moves down and fully engages with the air tank, the first cylinder just senses the limit sensor, and the lower auxiliary material feeding port opens to allow material to be fed.

[0026] S5, after feeding is completed, reset begins.

[0027] By implementing the above technical solution, the button starts the system, the base turntable grabs the empty can and rotates it into position, the solenoid valve controls the first cylinder to begin pressing down, and the first cylinder simultaneously drives the second cylinder to press down the can. When the second cylinder descends and fully engages with the can, the first cylinder senses the limit sensor, and the lower auxiliary material inlet opens to allow feeding. The feeding metering is adjusted according to time, allowing simultaneous feeding of auxiliary materials into all four cans. The system features a highly efficient and intelligent HMI human-machine interface combined with a PLC programmable controller, allowing for controllable and adjustable auxiliary material feeding amount and bottle pressing speed. The auxiliary material feeding metering can be achieved by setting time parameters through the HMI human-machine interface, eliminating the need for frequent feeding and automatically selecting different auxiliary materials for suction. After feeding is completed, the system begins to reset, the first cylinder reverses its direction, and the second cylinder retracts away from the can. As the second cylinder retracts, the opening and closing mechanism is simultaneously squeezed to close, preventing auxiliary material leakage. After the first cylinder completes its reverse operation, it waits for the next operation command.

[0028] The present invention has the following beneficial effects: (1) it realizes the automation of the addition of auxiliary materials before filling the gas cylinder; (2) it realizes the controllability and adjustability of the amount of auxiliary materials added and the controllability and adjustability of the bottle pressing speed; (3) when different auxiliary materials are added to the auxiliary material tank, different auxiliary materials can be automatically selected for suction. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the present invention;

[0030] Figure 2 This is a structural schematic diagram of Embodiment 1;

[0031] Figure 3 This is a schematic diagram of the extrusion opening and closing structure in this invention when it is closed;

[0032] Figure 4 This is a schematic diagram of the structure of the extrusion opening and closing structure in this invention when it is open;

[0033] Figure 5 This is a schematic diagram of the control system in this invention.

[0034] In the diagram: 1. Auxiliary material tank; 2. Power unit; 2.1. First cylinder; 2.2. Second cylinder; 2.3. Feeding cylinder; 3. Air tank; 4. Auxiliary material pipe; 4.1. First auxiliary material pipe; 4.2. Second auxiliary material pipe; 4.3. Third auxiliary material pipe; 5. Pipe; 6. Speed ​​regulating valve; 7. Solenoid valve; 8. Check valve; 9. Control system; 10. Limit sensor; 11. Extrusion opening and closing structure; 11. Upper extrusion part; 11.1. Lower moving part; 11.2. Connecting plate; 12. Return spring; 13. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and examples. Specific Implementation Example 1:

[0037] like Figure 1 or Figure 2 As shown, a gas cylinder auxiliary material adding mechanism includes an auxiliary material tank 1, a power unit 2, and a control system 9. The auxiliary material tank 1 is connected to the gas cylinder 3 via an auxiliary material pipe 4. The cylinder 2 includes a first cylinder 2.1, a second cylinder 2.2, and a feeding cylinder 2.3. The first cylinder 2.1 drives the second cylinder 2.2 to move synchronously. The first cylinder 2.1 is connected to the second cylinder 2.2, and the second cylinder 2.2 is connected to the feeding cylinder 2.3. The second cylinder 2.2 is positioned above the gas cylinder 3. The first cylinder 2.1 is connected to the second cylinder 2.2 via a pipe 5, on which a speed regulating valve 6 is provided. The first cylinder 2.1 is connected to a solenoid valve 7. The air inlet and outlet of the first cylinder 2.1 are both connected to a tee, which is connected to the second cylinder 2.2 via an air inlet pipe. The auxiliary material pipe 4 includes a first auxiliary material pipe 4.1 and a second auxiliary material pipe 4.2. The auxiliary material tank 1 is connected to the feeding cylinder 2.3 through the first auxiliary material pipe 4.1, and the feeding cylinder 2.3 is connected to the second cylinder 2.2 through the second auxiliary material pipe 4.2. A one-way valve 8 is provided on the second auxiliary material pipe 4.2. The control system 9 includes a PLC programmable controller, an HMI human-machine interface, a cylinder control system, an operating system, and several sensors. A limit sensor 10 is provided on the first cylinder 2.1. A squeeze opening and closing structure 11 is provided on the upper part of the air tank 3, and the squeeze opening and closing structure 11 is connected to the control system 9. The first cylinder 2.1 is a delay cylinder. There are four air tanks 3. The auxiliary material pipe 4, the feeding cylinder 2.3, the second cylinder 2.2, the air tanks 3, the pipe 5, the first cylinder 2.1, the sensors, and the control valve together form an adding structure. The four adding structures are connected to the auxiliary material tank 1 to form a feeding system.

[0038] In the above technical solution, the auxiliary material tank 1 is used to hold the auxiliary material to be added, the power unit 2 is used to provide power, the first cylinder 2.1 starts to press down, and at the same time the first cylinder 2.1 moves, it drives the second cylinder 2.2 to press down the air tank 3. The first cylinder 2.1 and the second cylinder 2.2 are connected, and the speed of the cylinder pressing down is easily adjusted by a speed regulating valve. The second cylinder 2.2 is connected to the feeding cylinder 2.3 through the auxiliary material pipe 4, and the feeding cylinder 2.3 is connected to the auxiliary material tank 1 through the auxiliary material pipe 4, so that the auxiliary material can enter the air tank 3 from the auxiliary material tank 1 through the auxiliary material pipe 4 for the addition of auxiliary material. The pipe 5 is an air pipe, and the speed regulating valve 6 installed on the air pipe changes the air flow rate entering the cylinder, thereby controlling the movement speed of the cylinder. Because the two cylinders themselves generate friction, complete synchronization is impossible. First, a solenoid valve controls one cylinder. A three-way valve is added to both the original inlet and outlet areas, and an air pipe is introduced into the other cylinder, achieving synchronized operation of the first cylinder 2.1 and the second cylinder 2.2. The auxiliary material in the auxiliary material tank 1 is first sucked into the feeding cylinder 2.3 through the first auxiliary material pipe 4.1, and then transferred to the air tank below the second cylinder 2.2 through the second auxiliary material pipe 4.2. The one-way valve 8 on the second auxiliary material pipe 4.2 ensures that the material can only be transferred from the direction of the feeding cylinder 2.3 to the direction of the second cylinder 2.2, preventing backflow and reverse flow. Adding different auxiliary materials to the auxiliary material tank 1 allows for automatic selection and suction of different auxiliary materials. The air tank adds auxiliary materials efficiently and intelligently. The system uses a human-machine interface (HMI) combined with a PLC programmable controller for control. The auxiliary material addition amount and bottle pressing speed are controllable and adjustable. Auxiliary material metering can be achieved by setting time parameters through the HMI. When the second cylinder 2.2 moves downwards and fully engages with the air tank 3, the first cylinder 2.1 detects the limit sensor 10. The limit sensor 10 is connected to the control system 9, and the lower auxiliary material inlet opens to allow feeding. The feeding metering is adjusted according to time. After a certain period, the cylinder resets, and the first cylinder 2.1 reverses direction, while the second cylinder 2.2 retracts away from the air tank. Simultaneously, the opening and closing structure 11 closes to prevent auxiliary material leakage. Adding auxiliary materials to all four air tanks simultaneously is efficient and convenient. Specific Implementation Example 2:

[0040] like Figure 3 or Figure 4As shown, the extrusion opening and closing structure 11 includes an upper extrusion part 11.1 disposed on the second cylinder 2.2 and a lower moving part 11.2 disposed at the port of the gas tank 3. The upper extrusion part 11.1 and the lower moving part 11.2 are adapted to each other. The auxiliary material tube 4 also includes a third auxiliary material tube 4.3, which passes through the middle of the upper extrusion part 11.1. The upper end of the third auxiliary material tube 4.3 is connected to the second auxiliary material tube 4.2, and the lower end of the third auxiliary material tube 4.3 is laterally open. A connecting plate 12 is fixedly disposed inside the gas tank 3. The lower surface of the lower moving part 11.2 is connected to the upper surface of the connecting plate 12 by a return spring 13.

[0041] In the above technical solution, the upper extrusion part 11.1 is driven by the second cylinder 2.2, and the lower moving part 11.2 is connected to the connecting plate 12 inside the gas tank 3 through the return spring 13. The upper extrusion part 11.1 and the lower moving part 11.2 abut against each other. When the upper extrusion part 11.1 moves downward, it pushes the lower moving part 11.2 into the gas tank 3. At this time, the material enters the empty tank through the third auxiliary material pipe 4.3. The third auxiliary material pipe 4.3 has a side opening to facilitate the addition of auxiliary materials. After the auxiliary materials are added, the upper extrusion part 11.1 moves upward, and the lower moving part 11.2 is reset to the bottle mouth of the gas tank 3 by the return spring 13. A sealing ring is provided at the contact point between the lower moving part 11.2 and the bottle mouth to improve the sealing effect of the auxiliary materials. Specific Implementation Example 3:

[0043] This embodiment proposes a control method for a gas cylinder auxiliary material adding mechanism, referring to... Figure 1 or Figure 2 or Figure 3 or Figure 4 or Figure 5 This includes the following steps:

[0044] S1, button start, the base turntable grabs the gas tank 3 and rotates it into place;

[0045] S2, solenoid valve 7 controls the first cylinder 2.1 to start pressing down;

[0046] S3, the first cylinder 2.1 operates simultaneously with the second cylinder 2.2 pressing down the air tank 3;

[0047] S4, when the second cylinder 2.2 moves downward and presses against the air tank 3 and fully engages with the air tank 3, the first cylinder 2.1 just senses the limit sensor, and the lower auxiliary material feeding port opens to allow material to be fed;

[0048] S5, after feeding is completed, reset begins.

[0049] In the above technical solution, the button starts the system, the base turntable grabs the empty can and rotates it into position, the solenoid valve 7 controls the first cylinder 2.1 to start pressing down, and the first cylinder 2.1 simultaneously drives the second cylinder 2.2 to press down the gas can 3. When the second cylinder 2.2 moves down and presses against the gas can 3 and is fully engaged with the gas can 3, the first cylinder 2.1 just senses the limit sensor, the lower auxiliary material feeding port opens to allow feeding, the feeding metering is adjusted according to time, and the four gas cans can be fed simultaneously. The system is highly efficient and intelligent, with a human-machine interface (HMI) combined with a PLC programmable controller, the auxiliary material feeding amount is controllable and adjustable, and the bottle pressing speed is adjustable and controllable. The auxiliary material feeding metering can be achieved by setting time parameters through the HMI, eliminating the need for frequent feeding and automatically selecting different auxiliary materials. After feeding is completed, the system resets, the first cylinder 2.1 reverses its direction, and the second cylinder 2.2 retracts away from the gas can. At the same time as the second cylinder 2.2 retracts, the opening and closing mechanism 11 is squeezed to close synchronously to prevent auxiliary material leakage. After the first cylinder 2.1 has completed its reverse operation, it waits for the next operation command.

[0050] The present invention has the following beneficial effects: it realizes the automation of the addition of auxiliary materials before filling the gas cylinder; it realizes the controllability and adjustability of the amount of auxiliary materials added and the controllability and adjustability of the bottle pressing speed; and it can automatically select and draw different auxiliary materials when adding different auxiliary materials to the auxiliary material tank.

Claims

1. A gas cylinder auxiliary material adding mechanism, characterized in that, include: Auxiliary material container (1), which is used to hold the auxiliary materials to be added; Gas tank (3) is used to store auxiliary materials. The gas tank (3) is connected to the auxiliary material bucket (1) through the auxiliary material pipe (4). The power unit (2) is used to provide power. The power unit (2) includes a first cylinder (2.1), a second cylinder (2.2) and a feeding cylinder (2.3). The first cylinder (2.1) drives the second cylinder (2.2) to move synchronously. The first cylinder (2.1) is connected to the second cylinder (2.2). The second cylinder (2.2) is connected to the feeding cylinder (2.3). The second cylinder (2.2) is located above the air tank (3). The control system (9) is used to control the movement of the power unit (2); The first cylinder (2.1) is connected to the second cylinder (2.2) through a pipe (5); a solenoid valve (7) is provided on the first cylinder (2.1); a limit sensor (10) is provided on the first cylinder (2.1); the first cylinder (2.1) is a delay cylinder; The auxiliary material pipe (4), feeding cylinder (2.3), second cylinder (2.2), air tank (3), pipeline (5), first cylinder (2.1), limit sensor and solenoid valve together form an additive structure.

2. The gas cylinder auxiliary material adding mechanism according to claim 1, characterized in that, A speed regulating valve (6) is installed on the pipeline (5).

3. The gas cylinder auxiliary material adding mechanism according to claim 2, characterized in that, The air inlet and outlet of the first cylinder (2.1) are both connected to a three-way valve, which is connected to the second cylinder (2.2) through an air inlet pipe.

4. A gas cylinder auxiliary material adding mechanism according to claim 1, 2, or 3, characterized in that, The auxiliary material pipe (4) includes a first auxiliary material pipe (4.1) and a second auxiliary material pipe (4.2). The auxiliary material barrel (1) is connected to the feeding cylinder (2.3) through the first auxiliary material pipe (4.1). The feeding cylinder (2.3) is connected to the second cylinder (2.2) through the second auxiliary material pipe (4.2). A one-way valve (8) is provided on the second auxiliary material pipe (4.2).

5. A gas cylinder auxiliary material adding mechanism according to claim 1, 2, or 3, characterized in that, The upper part of the gas tank (3) is provided with a squeeze opening and closing structure (11), which is connected to the control system (9).

6. A gas cylinder auxiliary material adding mechanism according to claim 1, 2, or 3, characterized in that, The number of gas cylinders (3) is four.

7. A control method for a gas cylinder auxiliary material adding mechanism, used in any one of claims 1-6, characterized in that, Includes the following steps: S1, button start, the base turntable grabs the gas tank (3) and rotates it into place; S2, the solenoid valve (7) controls the first cylinder (2.1) to start pressing down; S3, the first cylinder (2.1) moves while driving the second cylinder (2.2) to press down the air tank (3); S4, when the second cylinder (2.2) moves down and presses against the air tank (3) and fully engages with the air tank (3), the first cylinder (2.1) just senses the limit sensor, and the lower auxiliary material feeding port opens to allow material to be fed; S5, after feeding is completed, reset begins.

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