Spaceflight capsule type explosion-proof printer and control method thereof
The aerospace capsule-type explosion-proof printer, with its dual-chamber structure and coordinated control of inner and outer door machines, solves the problems of safety hazards and low operating efficiency in existing technologies, and achieves continuous, safe, and efficient printing in flammable and explosive environments.
Patent Information
- Application Number
- CN202511736137.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-25
- Publication Date
- 2026-01-23
AI Technical Summary
Existing positive pressure explosion-proof printers pose safety hazards and have low operating efficiency in flammable and explosive environments. In particular, the single-door structure cannot be equipped with spark blocking devices, and the direct power-off paper removal method affects the continuity and lifespan of the equipment.
Employing a dual-compartment structure and a coordinated control system for the inner and outer doors, the printer uses a positive pressure chamber and a transition chamber design to automatically and alternately open and close the inner and outer doors, ensuring continuous, safe, and efficient label printing operations even in flammable and explosive environments.
It enables continuous, safe, and efficient label printing in flammable and explosive environments, avoiding the safety defects and equipment interruption problems of traditional structures, and improving the reliability and ease of operation of the equipment.
Smart Images
Figure CN121375336A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of printers, in particular to a space cabin type explosion-proof printer and a control method thereof. BACKGROUND
[0002] In flammable and explosive hazardous places such as oil, chemical industry and mine, electrical equipment must meet strict explosion-proof requirements to prevent electric sparks or high temperature from causing explosion accidents. The positive pressure type explosion-proof equipment prevents the entry of external flammable gas by maintaining the internal pressure of the equipment higher than the external environmental pressure, thereby achieving explosion-proof protection of ordinary electrical equipment. As an important output device in such environment, the positive pressure type printer is widely used in label printing, data recording and other scenes. The existing positive pressure type explosion-proof printer mostly adopts a single cabin structure, which is mainly designed in two types: one is a structure in which the exhaust port and the paper outlet share the same gap channel; the other is a structure in which the door is directly opened to take out the paper after power-off. These two structures gradually expose many problems in long-term use, which restricts the safety and operation efficiency of the equipment.
[0003] The first single-door structure combines the exhaust and paper outlet functions in the same gap channel. Although the structure is simple, due to the narrow channel and the combination of functions, it is impossible to install the spark blocking device (such as flame arrestor or spark isolation net) which is required by the national standard. This makes the static electricity or electric sparks generated during printing possible to leak through the channel, which poses a significant safety hazard. Therefore, this structure is difficult to pass the strict safety audit in explosion-proof detection and certification, which limits its application in actual high-risk environments. The second structure uses the way of directly opening the door to take out the paper after power-off. Although the equipment will cut off the power supply and alarm at the moment of opening the door, resulting in the temporary loss of internal pressure, the equipment needs to be restarted and undergo a long time of purging (usually more than 5 minutes) to replace the internal gas after each paper taking, so as to ensure that the equipment can resume normal operation after no flammable gas accumulation. This process not only is complicated to operate, but also seriously affects the continuity of the printing task and the work efficiency. Especially in the case of frequent printing, the utilization rate of the equipment is greatly reduced, and the labor and time cost is significantly increased. In addition, the frequent fluctuation of pressure also accelerates the aging of components, affecting the service life of the equipment.
[0004] Therefore, there is an urgent need in the art for a positive pressure type explosion-proof printer that can fully meet the requirements of explosion-proof certification and realize continuous, efficient and safe printing, to solve the fundamental problems of the existing equipment in terms of structural safety and operational continuity. SUMMARY
[0005] The purpose of the present application is to provide a space cabin type explosion-proof printer and a control method thereof to solve the problems existing in the prior art.
[0006] To achieve the above purpose, the present application provides the following solutions: The application provides a space cabin type explosion-proof printer, which comprises: a positive pressure cabin, wherein the bottom of the positive pressure cabin is provided with a printer; a transition cabin, which is arranged on the side of the positive pressure cabin, and is internally provided with a label collection box; an inner door machine, which is arranged between the positive pressure cabin and the transition cabin, and is used for the communication and closure between the positive pressure cabin and the transition cabin; an outer door machine, which is arranged on the outside of the transition cabin, and is used for the opening and closure of the transition cabin; a control system, which is used for controlling the inner door machine to be in an open state and the outer door machine to be in a closed state when a blowing stage and a printing stage are performed; when the printer prints a label and the label falls into the transition cabin, the inner door machine is controlled to be closed, and when the outer door machine is closed to a position, the outer door machine is controlled to be opened; when paper taking is completed, the outer door machine is controlled to be closed, and when the inner door machine is closed to a position, the inner door machine is controlled to be opened.
[0007] Preferably, the positive pressure cabin and the transition cabin are both provided with an explosion-proof sealing structure.
[0008] Preferably, a first throttling exhaust valve is arranged between the positive pressure cabin and the transition cabin.
[0009] Preferably, a second throttling exhaust valve is arranged on the side wall of the transition cabin.
[0010] Preferably, the inner door machine and the outer door machine both comprise an explosion-proof sealing door, and the explosion-proof sealing door is in transmission connection with an actuator.
[0011] Preferably, the control system comprises an explosion-proof door machine control box and an explosion-proof positive pressure controller, and the explosion-proof door machine control box and the explosion-proof positive pressure controller are both arranged on the positive pressure cabin.
[0012] Preferably, the control system further comprises an explosion-proof pressure alarm, and the explosion-proof pressure alarm is arranged on the top of the positive pressure cabin.
[0013] The application further provides a control method of the space cabin type explosion-proof printer, which comprises the following steps: S1. starting a positive pressure blowing process, controlling the inner door machine to be opened and the outer door machine to be closed, and after the blowing is completed, the power contactor in the positive pressure cabin is attracted, the printer is powered on and enters a standby state; S2. the printer receives a printing task, and after the printing task is completed, a label falls into the label collection box; S3. the inner door machine is controlled to be closed and the outer door machine is controlled to be opened, so that the paper taking is realized without affecting the pressure of the positive pressure cabin; S4. after the paper taking is completed, the system is automatically restored to an initial state, and is prepared for the next printing.
[0014] Preferably, in step S2, the pressure in the cabin is monitored in real time during the positive pressure operation stage, and the pressure in the cabin is adjusted by the explosion-proof positive pressure controller, the first throttling exhaust valve and the second throttling exhaust valve.
[0015] Preferably, in step S2, the explosion-proof pressure alarm sends an alarm signal when the pressure is abnormal, and the pressure abnormality includes high pressure alarm, low pressure alarm and ultra-low pressure automatic power-off.
[0016] The present application has the following beneficial technical effects relative to the prior art: The space cabin type explosion-proof printer and the control method thereof provided by the present application realize continuous, safe and efficient label printing operation in a flammable and explosive environment by adopting a double-cabin structure of a positive pressure cabin and a transition cabin and a control mode of automatic alternating opening and closing of inner and outer door machines. The cooperative work of the double-door machines ensures that the pressure in the positive pressure cabin is always stable within a safe range, avoiding the safety defect that the traditional single-door structure cannot be equipped with a spark blocking device due to the combination of the exhaust and paper outlet channels. The double-door machines also overcome the problems of equipment interruption and long-time purging caused by the direct power-off paper taking mode. At the same time, the application of fully explosion-proof components and the automatic control process significantly improve the reliability and operation convenience of the equipment, filling the gap in the market for high-performance explosion-proof printing equipment. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.
[0018] Figure 1 A space cabin type explosion-proof printer structure schematic diagram is provided for the present application; Figure 2 A control method flow chart of the space cabin type explosion-proof printer provided by the present application. DETAILED DESCRIPTION
[0019] The serial numbers of components in this document, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. Unless otherwise specified, the "connection" and "coupling" in this application include direct and indirect connection (coupling). In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0020] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0021] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0022] The purpose of the present application is to provide a space cabin type explosion-proof printer and its control method to solve the problems existing in the prior art.
[0023] In order to make the above-mentioned purposes, characteristics and advantages of the present application more obvious and easy to understand, the present application will be further described in detail in combination with the drawings and specific embodiments.
[0024] Embodiment 1: As Figure 1 shown, the present application provides a space cabin type explosion-proof printer, which borrows the concept of sealed separation of space cabin in its structural design, and realizes continuous and safe printing in flammable and explosive environment through double cabin structure and intelligent door machine control system. The printer mainly includes a positive pressure cabin 1, a transition cabin 2, an inner door machine 3, an outer door machine 4 and a control system.
[0025] Specifically, the positive pressure cabin 1 is the core working area of the device, and the printer 5 is installed inside. The positive pressure cabin 1 adopts a fully sealed structure, and the cabin body is made of an impact-resistant and anti-static metal material. All joints are provided with sealing strips to ensure good air tightness when the door machine is closed. The top of the positive pressure cabin 1 is provided with a first throttling exhaust valve 8 for adjusting the gas flow in the cabin during the positive pressure operation stage to maintain the pressure stable within the range of 100-200 Pa. The explosion-proof positive pressure controller 6 monitors the pressure in the cabin in real time and adjusts the air inlet and exhaust volume through a PID control algorithm. When the detected pressure is lower than the set threshold, the controller automatically increases the opening degree of the air inlet valve; when the pressure is too high, the excess gas is released through the first throttling exhaust valve 8.
[0026] Further, the transition cabin 2 is arranged on the side of the positive pressure cabin 1 and communicates with the positive pressure cabin 1 through the inner door machine 3. The transition cabin 2 is provided with a label collection box 9 for receiving the label paper falling from the printer paper outlet. The internal space of the transition cabin 2 is relatively small, and a second throttling exhaust valve 10 is arranged on the wall plate of the transition cabin 2 for maintaining a slight positive pressure in the transition cabin during the paper taking process to prevent the invasion of external combustible gas. All electrical elements in the transition cabin 2, such as sensors and actuators, are explosion-proof devices of intrinsic safety type or explosion-proof type.
[0027] Further, the inner door machine 3 and the outer door machine 4 are isolation mechanisms between the positive pressure cabin and the transition cabin and between the transition cabin and the external environment, respectively. Both have similar structures and include an explosion-proof sealing door and an electric actuator in transmission connection with the sealing door. The sealing door is embedded with a high-temperature-resistant silicone sealing strip around the periphery, and can form effective sealing with the door frame when closed. The actuator adopts an explosion-proof motor drive to realize smooth opening and closing of the door, and is provided with a position sensor for detecting the opening and closing state of the door body.
[0028] Further, the control system is the core of the whole device, including the explosion-proof door machine control box 11, the explosion-proof positive pressure controller 6 and the explosion-proof pressure alarm 7. The explosion-proof door machine control box 11 receives the pressure state signal from the explosion-proof positive pressure controller 6 and the instruction sent by the user through the selection switch (provided on the external panel, not shown in the figure), and controls the action sequence of the inner and outer door machines according to the preset logic. The explosion-proof pressure alarm 7 is arranged on the top of the positive pressure cabin. When the pressure in the cabin exceeds the set upper limit (for example, 250 Pa), the high-pressure alarm is triggered to stop the air inlet; when the pressure is lower than the lower limit (for example, 80 Pa), the low-pressure alarm is triggered to increase the air inlet compensation; when the pressure drops below the safety threshold (for example, 50 Pa), the system executes the ultra-low pressure automatic power-off program to cut off the power supply of the printer.
[0029] Example 2: The application also provides a control method of the above-mentioned aerospace space cabin type explosion-proof printer, and the flowchart is as shown in Figure 2 The specific steps include the following steps: First, after the device is powered on, the operator presses the
positive pressure start
[0030] Secondly, during the positive pressure operation stage, the printer can receive a printing task at any time. After the printing task is completed, the label paper automatically falls into the label collection box in the transition cabin through the paper outlet. Then, the user will dial the selection switch to
take paper
[0031] Finally, after the paper taking is completed, the user dials the selection switch back to the
reset
[0032] During the positive pressure operation and printing process of the embodiment, the explosion-proof positive pressure controller monitors the pressure in the cabin in real time and dynamically adjusts through the throttling exhaust valve. If the gas source pressure is abnormal and an alarm is generated, the system will execute the corresponding protection program, and after the gas source returns to normal, the system will automatically repeat the purging and positive pressure operation process, so as to ensure that the device always works in a safe state.
[0033] The present application realizes continuous printing and paper taking operation of the explosion-proof printer without stopping and losing pressure through the double cabin structure and door machine cooperative control, which significantly improves the work efficiency and safety in dangerous environments.
[0034] The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.
[0035] It should be noted that the components mentioned in the above embodiments are all general standard components or components known to those skilled in the art, and their structure and principle can be known to those skilled in the art through technical manuals or through conventional experimental methods.
[0036] The principles and implementation manners of the present application are described by using specific examples, and the above examples are only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manners and application ranges will be changed. In conclusion, the content of the specification should not be understood as a limitation of the present application.
Claims
1. An explosion-proof printer for aerospace capsules, characterized in that: include: A positive pressure chamber, the bottom of which is equipped with a printer; A transition chamber is located on the side of the positive pressure chamber, and a tag collection box is provided inside the transition chamber; An internal door operator is installed between the positive pressure chamber and the transition chamber for connecting and closing the positive pressure chamber and the transition chamber. An external door operator is located on the outside of the transition compartment and is used for opening and closing the transition compartment. The control system is used to control the inner door machine to be in the open state and the outer door machine to be in the closed state during the purging and printing stages; after the printer finishes printing the label and it falls into the transition chamber, the control system controls the inner door machine to close, and after it is fully closed, the control system controls the outer door machine to open; after the paper is picked up, the control system controls the outer door machine to close, and after it is fully closed, the control system controls the inner door machine to open.
2. The space capsule-type explosion-proof printer according to claim 1, characterized in that: Both the positive pressure chamber and the transition chamber adopt an explosion-proof sealed structure.
3. The space capsule-type explosion-proof printer according to claim 1, characterized in that: A first throttling exhaust valve is provided between the positive pressure chamber and the transition chamber.
4. The space capsule-type explosion-proof printer according to claim 1, characterized in that: The side wall of the transition chamber is equipped with a second throttling exhaust valve.
5. The space capsule-type explosion-proof printer according to claim 1, characterized in that: Both the inner door operator and the outer door operator include an explosion-proof sealed door, which is connected to the actuator for transmission.
6. The space capsule-type explosion-proof printer according to claim 1, characterized in that: The control system includes an explosion-proof door operator control box and an explosion-proof positive pressure controller, both of which are located on the positive pressure chamber.
7. The space capsule-type explosion-proof printer according to claim 6, characterized in that: The control system also includes an explosion-proof pressure alarm, which is located on the top of the positive pressure chamber.
8. The control method for the aerospace capsule-type explosion-proof printer according to any one of claims 1-7, characterized in that: Includes the following steps: S1. Start the positive pressure purging process, control the inner door machine to open and the outer door machine to close. After the purging is completed, the power contactor in the positive pressure chamber will engage, and the printer will be powered on and enter standby mode. S2. The printer receives the print job. After the print job is completed, the labels fall into the label collection box. S3. Control the inner door machine to close and the outer door machine to open, so as to pick up paper without affecting the pressure of the positive pressure chamber; S4. After the paper is picked up, the system automatically returns to the initial state, ready for the next print.
9. The control method for the aerospace capsule-type explosion-proof printer according to claim 8, characterized in that: In step S2, during the positive pressure operation phase, the pressure inside the chamber is monitored in real time, and the pressure inside the chamber is adjusted through the explosion-proof positive pressure controller, the first throttle exhaust valve, and the second throttle exhaust valve.
10. The control method for the aerospace capsule-type explosion-proof printer according to claim 9, characterized in that: In step S2, the explosion-proof pressure alarm emits an alarm signal when the pressure is abnormal, including high pressure alarm, low pressure alarm and ultra-low pressure automatic power cut-off.