A fire extinguisher tank welding waste gas recovery device and use method thereof

Abstract

The present invention belongs to the technical field of waste gas recovery, and in particular relates to a fire extinguisher tank welding waste gas recovery device and a method of using the same. The waste gas recovery device comprises: a device body, two cooling channels, an opening and closing unit, a temporary storage chamber in the device body, and an inlet pipe connected to the temporary storage chamber on the device body; the two cooling channels are both connected to the temporary storage chamber, and the time required for the waste gas to pass through the two cooling channels is different. The end of the cooling channel away from the temporary storage chamber is connected to the outlet pipe, and a low temperature can be formed in the cooling channel; the end of the two cooling channels close to the temporary storage chamber is provided with an opening and closing unit, and the opening and closing unit can connect and disconnect the cooling channel with the temporary storage chamber; compared with the prior art, the waste gas recovery device of the present invention can select different cooling channels according to the temperature of the waste gas, thereby controlling the time that the waste gas of different temperatures stays in the cooling channel, ensuring the waste gas cooling effect and the efficiency of the waste gas cooling treatment.

Description

Technical Field

[0001] The invention belongs to the technical field of waste gas recovery, and in particular relates to a fire extinguisher tank welding waste gas recovery device and a use method thereof. Background Art

[0002] The welding process of fire extinguisher tank is similar to general metal welding, and it will also produce a series of waste gas and smoke. These waste gases mainly come from the evaporation and melting of metal materials during welding, as well as the chemical reaction with oxygen and other components in the air.

[0003] The temperature of the waste gas generated under different welding conditions is high or low. When the waste gas does not need to be used for heat after recovery, it needs to be cooled before being discharged. The current waste gas recovery device has only one pathway for transporting the waste gas. The waste gas is cooled by a heat exchanger in the transport pathway. If the pathway is short, the waste gas with a higher temperature cannot be effectively cooled, while the waste gas with a lower temperature can be efficiently treated; if the pathway is long, the waste gas with a higher temperature can be effectively cooled, while the waste gas with a lower temperature stays in the recovery device for too long, and the waste gas treatment efficiency is low. Therefore, it is difficult for existing waste gas recovery devices to provide optimal cooling treatment when cooling waste gases of different temperatures. Summary of the invention

[0004] The purpose of the present invention is to provide a fire extinguisher tank welding waste gas recovery device and a method of using the same in response to the above-mentioned technical problems. The waste gas recovery device can select different cooling channels according to the temperature of the waste gas, thereby controlling the residence time of waste gases of different temperatures in the cooling channels, thereby ensuring the waste gas cooling effect and the efficiency of the waste gas cooling treatment.

[0005] In view of this, the present invention provides a fire extinguisher tank welding waste gas recovery device, comprising:

[0006] The device body has a temporary storage chamber in the device body, and the device body is provided with an introduction pipe connected to the temporary storage chamber;

[0007] Two cooling channels, both of which are connected to the temporary storage chamber. The time required for the exhaust gas to pass through the two cooling channels is different, and a low temperature can be formed in the cooling channels. The end of the cooling channel away from the temporary storage chamber is connected to a derivation pipe;

[0008] An opening and closing unit is provided at one end of the two cooling channels close to the temporary storage chamber, and the opening and closing unit can connect and disconnect the cooling channel and the temporary storage chamber.

[0009] In the present technical solution, during the welding process of the fire extinguisher tank, one end of the inlet pipe is placed close to the welding position, and the exhaust gas generated during the welding process is transported to the temporary storage chamber through the inlet pipe. A cooling channel suitable for cooling the exhaust gas at this temperature is selected according to the temperature of the exhaust gas, and the cooling channel is connected to the temporary storage chamber through the opening and closing unit of the cooling channel. At this time, the exhaust gas in the temporary storage chamber will enter the cooling channel, and the exhaust gas will be cooled in the process of passing through the cooling channel, and then exported to the device body from the outlet pipe at the other end of the cooling channel.

[0010] In the above technical solution, further, a plurality of baffles are provided at intervals along the exhaust gas flow direction in one of the cooling channels, and adjacent baffles are staggered.

[0011] In the above technical solution, further, a first temperature measuring device for detecting the temperature of the exhaust gas is provided on the inlet pipe or in the temporary storage chamber.

[0012] In the above technical solution, further, a refrigeration device for cooling the cooling channel is provided on the device body, and a second temperature measuring device is provided in the cooling channel.

[0013] In the above technical solution, further, the cooling channel and the temporary storage chamber are connected through a connecting groove, and the opening and closing unit includes:

[0014] A fixing seat, which is arranged at one end of the cooling channel close to the connecting groove;

[0015] The plug is arranged on one side of the fixed seat close to the connecting groove. The plug can block the connecting groove when it is in the closed position and can conduct the connecting groove when it is in the open position. The plug can approach and move away from the fixed seat to realize switching between the open position and the closed position.

[0016] In the above technical solution, further, a negative pressure chamber is provided in the fixed seat, a piston is provided in the negative pressure chamber, a connecting column is provided on the plug, and the end of the connecting column away from the plug passes through the negative pressure chamber and is connected to the piston; an air duct connected to the negative pressure chamber is provided on the fixed seat, and the end of the air duct away from the negative pressure chamber is connected to an exhaust device; a first elastic member is connected between the plug and the fixed seat, and the first elastic member is deformed when the plug is in the open position.

[0017] In the above technical solution, further, a movable locking seat is provided between the fixed seat and the plug. The locking seat can lock the plug in the closed position when it is in the locked position, and will not restrict the movement of the plug when it is in the unlocked position. A switching adjustment unit is provided on one side of the locking seat. The switching adjustment unit can drive the locking seat to approach and move away from the plug in a direction perpendicular to the movement of the plug, thereby realizing switching between the locked position and the unlocked position.

[0018] In the above technical scheme, further, the switching adjustment unit includes a swing arm, a connecting frame, a push-type electromagnet, and a second elastic member. The middle part of the swing arm is rotatably connected to the side wall of the cooling channel, the locking seat is connected to the first end of the swing arm, the connecting frame is connected to the second end of the swing arm, the push-type electromagnet is arranged on the side wall of the cooling channel, the output end of the push-type electromagnet is connected to the connecting frame, the second elastic member is connected between the connecting frame and the push-type electromagnet, and the push-type electromagnet can switch the locking seat to the unlocked position when energized and deform the second elastic member.

[0019] The present invention also discloses a method for using a fire extinguisher tank welding waste gas recovery device, which is applicable to the waste gas recovery device mentioned above. The method also includes a controller, and a first temperature measuring device, two sets of second temperature measuring devices, two sets of refrigeration devices, and two sets of opening and closing units are all electrically connected to the controller; the method also includes the following steps:

[0020] X1. Exhaust gas temperature measurement: The first temperature measuring device measures the temperature of the exhaust gas introduced into the temporary storage chamber and transmits the measured result to the controller;

[0021] X2. Select cooling channel: The controller selects the appropriate cooling channel according to the temperature of the exhaust gas;

[0022] X3. Control cooling temperature: After selecting a suitable cooling channel, start the corresponding refrigeration device to cool the cooling channel. During this process, the second temperature measuring device monitors the temperature in the cooling channel in real time. When the measured value reaches the temperature required for cooling, the refrigeration device stops working;

[0023] X4. Open the channel: After the temperature inside the cooling channel reaches the temperature required for cooling, the corresponding opening and closing unit connects the cooling channel with the temporary storage room.

[0024] In the above technical solution, further, in step X4, after the channel is opened, the second temperature measuring device still monitors the temperature in the cooling channel in real time. When the measured value is higher than the required temperature, the corresponding refrigeration device starts to continue cooling the cooling channel.

[0025] The beneficial effects of the present invention are:

[0026] 1. Two cooling channels are set to be connected with the temporary storage chamber, and two sets of opening and closing units are used to selectively connect and disconnect the temporary storage chamber and the two cooling channels. The time required for the exhaust gas to pass through the two cooling channels is different. In this way, when the temperature of the exhaust gas is high, the cooling channel with a longer exhaust gas passage time is selected to cool the exhaust gas to ensure the cooling effect of the exhaust gas. When the temperature of the exhaust gas is low, the cooling channel with a shorter exhaust gas passage time is selected to cool the exhaust gas to ensure the efficiency of the exhaust gas cooling treatment, thereby achieving targeted cooling treatment of exhaust gases at different temperatures and improving the effectiveness of the exhaust gas recovery device.

[0027] 2. By designing the opening and closing unit to be a combination of a fixed seat, a plug, a negative pressure chamber, a piston, a connecting column, an air duct, and a first elastic member, the air is evacuated and supplied to the negative pressure chamber through the air duct, and the air pressure on both sides of the piston in the negative pressure chamber is changed, so that the piston drives the connecting column and the plug to move, and the first elastic member is used to assist the movement of the plug, thereby realizing the switching of the plug between the open position and the closed position. The entire driving process is greener, more environmentally friendly, and has low energy consumption.

[0028] 3. By setting a locking seat between the fixed seat and the plug, and setting a switching adjustment unit to drive the locking seat to move, switching between the locked position and the unlocked position is achieved, thereby improving the stability of the plug in the closed position and ensuring the sealing of the cooling channel and the temporary storage chamber in the disconnected state.

[0029] 4. By designing the switching adjustment unit to be a combination of a swing arm, a connecting frame, a push-type electromagnet, and a second elastic member, the locking seat can be switched to an unlocked state by simply energizing the push-type electromagnet, thereby allowing the plug to be switched from a closed position to an open position. When the push-type electromagnet is powered off, if the plug is still in the open position, the locking seat will abut against the outer wall of the plug, and the second elastic member will be in a deformed and reset state. After the plug is switched to the closed position, the second elastic member will push the locking seat between the plug and the fixed seat, thereby automatically locking the plug. In this way, the push-type electromagnet only needs to be powered on and off once to realize that the locking seat can automatically switch from a locked position to an unlocked position, and then from an unlocked position to a locked position. The operation is simple, and the structure is ingenious and stable.

[0030] 5. By setting up a controller and electrically connecting the first temperature measuring device, two groups of second temperature measuring devices, two groups of refrigeration devices, and two groups of opening and closing units to the controller, an automatic control system for the waste gas recovery device can be formed through temperature measurement and feedback of the first temperature measuring device and the second temperature measuring device, and precise control of the two groups of refrigeration devices and the two groups of opening and closing units by the controller, thereby reducing the labor intensity of workers and improving the efficiency of waste gas recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0033] Figure 2 It is a schematic diagram of the overall longitudinal cross-sectional structure of the present invention.

[0034] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention after the shell is hidden.

[0035] Figure 4 for Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0036] Figure 5 It is a schematic diagram of the three-dimensional structure of the switching adjustment unit in the present invention.

[0037] Figure 6 It is a schematic diagram of the main structure of the switching adjustment unit in the present invention.

[0038] Figure 7 It is a schematic diagram of the transmission of electrical control signals of various components in the present invention.

[0039] Figure 8 This is a control flow chart of the waste gas recovery process of the waste gas recovery device of the present invention.

[0040] The symbols in the figure are:

[0041] 1. Device body; 2. Temporary storage chamber; 3. Inlet pipe; 4. Cooling shell; 401. Cooling channel; 5. Outlet pipe; 6. Opening and closing unit; 601. Fixing seat; 602. Plug; 603. Negative pressure chamber; 604. Piston; 605. Connecting column; 606. Air guide pipe; 607. First elastic member; 7. Baffle; 8. First temperature measuring device; 9. Refrigeration device; 10. Second temperature measuring device; 11. Connecting groove; 12. Positioning seat; 13. Switching adjustment unit; 1301. Swing arm; 1302. Connecting frame; 1303. Push-type electromagnet; 1304. Second elastic member; 14. Whole machine casing. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0044] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0045] like Figure 1-Figure 3 As shown, the embodiment of the present application provides a fire extinguisher tank welding waste gas recovery device, including: a device body 1, two cooling channels 401, an opening and closing unit 6,

[0046] See also Figure 1 The device body 1 is provided with a housing 14 outside, and the housing 14 is used to protect the device body 1. Figure 2 The device body 1 has a temporary storage chamber 2, and the device body 1 is provided with an introduction pipe 3 connected to the temporary storage chamber 2, and one end of the introduction pipe 3 extends out of the whole machine housing 14;

[0047] In this embodiment, a first temperature measuring device 8 for detecting the temperature of the exhaust gas is provided on the introduction pipe 3 or in the temporary storage chamber 2. The figure shows a schematic diagram of the first temperature measuring device 8 being provided on the introduction pipe 3. The first temperature measuring device 8 can quickly detect the temperature of the exhaust gas and display the value or transmit the data to the terminal for workers to view. The first temperature measuring device 8 can select a temperature measuring product that can respond quickly in the prior art, such as a thermistor, an infrared thermometer, an optical fiber temperature sensor, etc.

[0048] See also Figure 1 or Figure 3 , the device body 1 is provided with two cooling shells 4, see Figure 2 , a cooling channel 401 is provided in the cooling shell 4, and the two cooling channels 401 are both connected to the temporary storage chamber 2. The time required for the exhaust gas to pass through the two cooling channels 401 is different. The two cooling channels 401 can be set to a structure with the same cross-section but different lengths, or can be set to a structure with the same length but different cross-sections. For example, in the present embodiment, when the exhaust gas passes through one of the cooling channels 401, it can pass through the cooling channel 401 in a straight line, and in the other cooling channel 401, a plurality of baffles 7 are arranged at intervals along the length direction, and the adjacent baffles 7 are staggered. In this way, when the exhaust gas passes through the cooling channel 401, it will be blocked by the baffle 7 and needs to pass through the cooling channel 401 in a roundabout way, thereby extending the time the exhaust gas stays in the cooling channel 401;

[0049] In this embodiment, a refrigeration device 9 for refrigerating the cooling channel 401 is provided on the device body 1, and a second temperature measuring device 10 is provided in the cooling channel 401; specifically, the two cooling shells 4 are provided with refrigeration devices 9, and the refrigeration device 9 can perform heat exchange with the cooling channel 401 through the outer wall of the cooling shell 4, so as to cool the cooling channel 401, and the second temperature measuring device 10 can monitor the temperature in the cooling channel 401 in real time, and display the value or transmit the data to the terminal for workers to view, so as to determine whether it is necessary to switch the working state of the refrigeration device 9; in this embodiment, the second temperature measuring device 10 can use the same structure as the first temperature measuring device 8, and the refrigeration device 9 can use products that can quickly refrigerate in the prior art, such as liquid nitrogen cooling, semiconductor refrigeration, magnetic refrigeration, etc.;

[0050] The end of the cooling channel 401 away from the temporary storage chamber 2 is connected to the outlet pipe 5, and one end of the outlet pipe 5 extends out of the whole machine housing 14. After the exhaust gas is cooled by the cooling channel 401, it can be discharged from the device body 1 through the outlet pipe 5.

[0051] The two cooling channels 401 are each provided with an opening and closing unit 6 at one end close to the temporary storage chamber 2, and the opening and closing unit 6 can connect and disconnect the cooling channels 401 and the temporary storage chamber 2;

[0052] In this embodiment, during the welding process of the fire extinguisher tank, one end of the inlet pipe 3 is brought close to the welding position, and the exhaust gas generated during the welding process is transported to the temporary storage chamber 2 through the inlet pipe 3. A negative pressure device can be provided on the device body 1 to generate negative pressure in the inlet pipe 3, thereby absorbing the exhaust gas; according to the temperature of the exhaust gas, a cooling channel 401 suitable for cooling the exhaust gas at this temperature is selected, and the cooling channel 401 is connected to the temporary storage chamber 2 through the opening and closing unit 6 of the cooling channel 401. At this time, the exhaust gas in the temporary storage chamber 2 will enter the cooling channel 401, and the exhaust gas will be cooled in the process of passing through the cooling channel 401, and then exported from the device body 1 from the outlet pipe 5 at the other end of the cooling channel 401;

[0053] In order to prevent the waste gas from being over-accumulated in the temporary storage chamber 2, the first temperature measuring device 8 is preferably arranged on the introduction pipe 3, and the length of the introduction pipe 3 is appropriately extended, so that after the waste gas enters the temporary storage chamber 2, the appropriate cooling channel 401 is already connected to the temporary storage chamber 2, and the waste gas can directly enter the cooling channel 401;

[0054] Through the technical solution of this embodiment, when the temperature of the exhaust gas is high, the cooling channel 401 through which the exhaust gas passes for a longer time is selected to cool the exhaust gas, thereby ensuring the cooling effect of the exhaust gas. When the temperature of the exhaust gas is low, the cooling channel 401 through which the exhaust gas passes for a shorter time is selected to cool the exhaust gas, thereby ensuring the efficiency of the exhaust gas cooling treatment, thereby achieving targeted cooling treatment of exhaust gases at different temperatures and improving the effectiveness of the exhaust gas recovery device.

[0055] This embodiment provides a fire extinguisher tank welding waste gas recovery device, which, in addition to the technical solutions of the above embodiments, also discloses a structure of the opening and closing unit 6;

[0056] In this embodiment, the cooling channel 401 is connected to the temporary storage chamber 2 through the connecting groove 11, and the opening and closing unit 6 includes: a fixing seat 601, a plug 602;

[0057] See also Figure 4 , the fixing seat 601 is arranged at one end of the cooling channel 401 close to the connecting groove 11;

[0058] The plug 602 is arranged on one side of the fixing seat 601 close to the connecting groove 11, and the outer wall contour of one end of the plug 602 close to the connecting groove 11 is adapted to the inner wall contour of the connecting groove 11; the plug 602 can block the connecting groove 11 in the closed position, at which time the outer wall of one end of the plug 602 close to the connecting groove 11 fits with the inner wall of the connecting groove 11, and the exhaust gas cannot pass through the connecting groove 11 to enter the cooling channel 401; the plug 602 can conduct the connecting groove 11 when it is in the open position, at which time a gap appears between the plug 602 and the inner wall of the cooling shell 4, and the exhaust gas can pass through the connecting groove 11 to enter the cooling channel 401; the plug 602 can be close to and away from the fixing seat 601 to realize switching between the open position and the closed position;

[0059] See also Figure 4 A negative pressure chamber 603 is provided in the fixed seat 601, and a piston 604 is provided in the negative pressure chamber 603. When the air pressure on both sides of the piston 604 changes, the piston 604 can move from the high pressure side to the low pressure side in the negative pressure chamber 603. A connecting column 605 is provided on the plug 602, and the end of the connecting column 605 away from the plug 602 passes through the negative pressure chamber 603 and is connected with the piston 604; an air guide pipe 606 connected to the negative pressure chamber 603 is provided on the fixed seat 601, and the end of the air guide pipe 606 away from the negative pressure chamber 603 can be connected to an external air extraction device, and the air extraction device can extract the air in the negative pressure chamber 603 on the side of the piston 604 away from the plug 602 through the air guide pipe 606, and the side of the piston 604 close to the plug 602 in the negative pressure chamber 603 is connected to the atmosphere, so that the piston 604 moves away from the plug 60 in the negative pressure chamber 603. 2. Move in the direction of the piston 604, thereby driving the plug 602 to switch from the closed position to the open position through the connecting column 605; the air extraction device can also connect the air guide tube 606 with the outside world, so that the negative pressure chamber 603 on the side of the piston 604 away from the plug 602 is restored to the standard air pressure. A first elastic member 607 is connected between the plug 602 and the fixed seat 601. When the plug 602 switches from the closed position to the open position, the first elastic member 607 is squeezed and deformed to accumulate elastic force. When both sides of the piston 604 are at standard air pressure, the elastic force of the first elastic member 607 drives the plug 602 to switch from the open position to the closed position, and when the plug 602 is in the closed position, the first elastic member 607 will still give the plug 602 a thrust to keep the plug 602 stably in the closed position; the first elastic member 607 can be made of spring, rubber and other structures.

[0060] Through the technical solution of this embodiment, air is evacuated and supplied to the negative pressure chamber 603 through the air duct 606, so as to change the air pressure on both sides of the piston 604 in the negative pressure chamber 603, so that the piston 604 drives the connecting column 605 and the plug 602 to move, and the first elastic member 607 is used to assist the movement of the plug 602, thereby realizing the switching of the plug 602 between the open position and the closed position. The whole driving process is greener, more environmentally friendly and has low energy consumption.

[0061] This embodiment provides a fire extinguisher tank welding waste gas recovery device, which, in addition to the technical solutions of the above embodiments, also optimizes the opening and closing unit 6;

[0062] See also Figure 5In this embodiment, a movable locking seat 12 is provided between the fixed seat 601 and the plug 602. When the locking seat 12 is in the locked position, it can lock the plug 602 in the closed position. When the locking seat 12 is in the unlocked position, it will not restrict the movement of the plug 602. A switching adjustment unit 13 is provided on one side of the locking seat 12. The switching adjustment unit 13 can drive the locking seat 12 to move closer to and away from the plug 602 in a direction perpendicular to the movement of the plug 602, so as to switch between the locked position and the unlocked position.

[0063] Figure 5 and Figure 6 The schematic diagram shown is when the locking seat 12 is in the unlocked position. At this time, the projection of the locking seat 12 and the plug 602 in the moving direction of the plug 602 is separated, and the locking seat 12 will not interfere with the switching of the plug 602 between the open position and the closed position;

[0064] When the locking seat 12 is in the locking position, the projection of the locking seat 12 and the plug 602 in the moving direction of the plug 602 overlaps, and the side wall of the locking seat 12 fits with the side wall of the plug 602 close to the fixed seat 601, and the locking seat 12 blocks the movement of the plug 602;

[0065] The switching adjustment unit 13 will only drive the locking seat 12 to move closer to and away from the plug 602 in a direction perpendicular to the movement of the plug 602. The locking seat 12 will not move in the moving direction of the plug 602, and the locking effect on the plug 602 is good.

[0066] Through the technical solution of this embodiment, the stability of the plug 602 in the closed position is improved, and the sealing performance of the cooling channel 401 and the temporary storage chamber 2 in the disconnected state is ensured.

[0067] This embodiment provides a fire extinguisher tank welding waste gas recovery device, which, in addition to the technical solutions of the above embodiments, also discloses a structure of a switching adjustment unit 13;

[0068] See also Figure 6In this embodiment, the switching adjustment unit 13 includes a swing arm 1301, a connecting frame 1302, a push electromagnet 1303, and a second elastic member 1304. The middle part of the swing arm 1301 is rotatably connected to the side wall of the cooling channel 401. The positioning seat 12 is connected to the first end of the swing arm 1301, and the connecting frame 1302 is connected to the second end of the swing arm 1301. The push electromagnet 1303 is arranged on the side wall of the cooling channel 401. The output end of the push electromagnet 1303 is provided with an output shaft, which is connected to the connecting frame 1302. When the push electromagnet 1303 is energized, the output shaft can be pushed out, that is, it moves away from the push electromagnet 1303. The second elastic member 1304 is connected between the connecting frame 1302 and the push electromagnet 1303; the structure of the second elastic member 1304 can be the same as the structure of the first elastic member 607.

[0069] Therefore, in the present embodiment, the push electromagnet 1303 can drive the connecting frame 1302 to move away from the push electromagnet 1303 when energized. During this process, the connecting frame 1302 brings the second end of the swing arm 1301 to swing away from the push electromagnet 1303, and the first end of the swing arm 1301 brings the blocking seat 12 to swing away from the plug 602, thereby switching the blocking seat 12 to the unlocked position. During this process, the second elastic member 1304 is stretched to accumulate elastic force; when the push electromagnet 1303 is powered off, the output shaft of the push electromagnet 1303 loses thrust, and at this time the elastic force of the second elastic member 1304 brings the connecting frame 1302 to reset, thereby driving the swing arm 1301 to swing, so that the first end of the swing arm 1301 brings the blocking seat 12 to swing towards the plug 602;

[0070] When the connecting frame 1302 is in the process of resetting, if the plug 602 is still in the open position, the blocking seat 12 will collide with the outer contour of the plug 602 during the process of swinging toward the plug 602. At this time, the second elastic member 1304 has not yet recovered and the blocking seat 12 has not reached the locked position. In this state, after the plug 602 is switched to the closed position, a gap appears between the blocking seat 12 and the plug 602 in the direction in which the plug 602 moves. At this time, the elastic force of the second elastic member 1304 will indirectly drive the blocking seat 12 to continue to swing toward the plug 602, so that the blocking seat 12 is switched to the locked position.

[0071] In order to facilitate the locking seat 12 to smoothly reach the locking position, a chamfer or rounded corner may be provided at one end of the locking seat 12 close to the plug 602 to facilitate the locking seat 12 to approach the plug 602;

[0072] Through the technical solution of this embodiment, the push-type electromagnet 1303 only needs to be powered on and off once to realize that the locking seat 12 is automatically switched from the locked position to the unlocked position, and then from the unlocked position to the locked position. The operation is simple, and the structure is ingenious and stable.

[0073] This embodiment discloses a method for using a waste gas recovery device for welding a fire extinguisher tank, which is applicable to the waste gas recovery device in the above-mentioned embodiment. In this embodiment, the waste gas recovery device also includes a controller, and a first temperature measuring device 8, two sets of second temperature measuring devices 10, two sets of refrigeration devices 9, and two sets of opening and closing units 6 are all electrically connected to the controller; the electrical control signal transmission between each temperature monitoring element and the actuator and the controller is as follows: Figure 7 As shown, a temperature value can be preset in the controller, and a temperature value measured by a temperature monitoring element can be received and compared with the preset temperature value, thereby controlling the actuator;

[0074] The waste gas recovery process control flow chart of the waste gas recovery device in this embodiment is as follows: Figure 8 As shown, the following steps are included:

[0075] X1. Exhaust gas temperature measurement: The first temperature measuring device 8 measures the temperature of the exhaust gas introduced into the temporary storage chamber 2. This temperature measurement process can be carried out in the introduction pipe 3 or in the temporary storage chamber 2. The first temperature measuring device 8 transmits the measured result to the controller;

[0076] X2. Selecting the cooling channel 401: The controller compares the temperature value of the exhaust gas with the preset temperature value. When the temperature of the exhaust gas is higher than the preset temperature, the exhaust gas is judged to be high temperature, and the cooling channel 401 through which the exhaust gas needs to pass for a longer time is selected. When the temperature of the exhaust gas is lower than the preset temperature, the exhaust gas is judged to be low temperature, and the cooling channel 401 through which the exhaust gas needs to pass for a shorter time is selected.

[0077] X3. Control cooling temperature: after determining the required cooling channel 401, start the corresponding refrigeration device 9 to cool the cooling channel 401. During this process, the second temperature measuring device 10 monitors the temperature in the cooling channel 401 in real time. When the measured value reaches the temperature required for cooling, the refrigeration device 9 stops working;

[0078] X4. Open the channel: After the temperature inside the cooling channel 401 reaches the temperature required for cooling, the corresponding opening and closing unit 6 connects the cooling channel 401 with the temporary storage chamber 2. At this time, the exhaust gas will pass through the corresponding connecting groove 11 and enter the cooling channel 401; preferably, after the exhaust gas enters the cooling channel 401, the second temperature measuring device 10 still monitors the temperature in the cooling channel 401 in real time. When the measured value is higher than the required temperature, the corresponding refrigeration device 9 starts to continue to cool the cooling channel 401, so as to avoid the temperature in the cooling channel 401 from rising and losing the cooling capacity, thereby ensuring the cooling effect of the exhaust gas.

[0079] Through the technical solution of this embodiment, by accurately controlling the two groups of refrigeration devices 9 and the two groups of opening and closing units 6 through the controller, an automatic control system for the waste gas recovery device can be formed, thereby reducing the labor intensity of workers and improving the efficiency of waste gas recovery.

[0080] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A fire extinguisher tank welding waste gas recovery device, characterized in that: include: A device body (1), wherein the device body (1) has a temporary storage chamber (2), and the device body (1) is provided with an introduction pipe (3) connected to the temporary storage chamber (2); Two cooling channels (401), both of which are in communication with the temporary storage chamber (2), the time required for the exhaust gas to pass through the two cooling channels (401) is different, a low temperature can be formed in the cooling channels (401), and one end of the cooling channel (401) away from the temporary storage chamber (2) is connected to a degassing pipe (5); An opening and closing unit (6), wherein the opening and closing unit (6) is provided at one end of the two cooling channels (401) close to the temporary storage chamber (2), and the opening and closing unit (6) can connect and disconnect the cooling channels (401) and the temporary storage chamber (2); The cooling channel (401) is connected to the temporary storage chamber (2) via a connecting groove (11), and the opening and closing unit (6) comprises: A fixing seat (601), the fixing seat (601) being arranged at one end of the cooling channel (401) close to the connecting groove (11); a plug (602), the plug (602) being arranged on a side of the fixing seat (601) close to the connecting groove (11); the plug (602) being able to block the connecting groove (11) when in a closed position; and being able to conduct the connecting groove (11) when in an open position; and the plug (602) being able to move close to and away from the fixing seat (601) to realize switching between an open position and a closed position; A movable locking seat (12) is provided between the fixed seat (601) and the plug (602); the locking seat (12) can lock the plug (602) in a closed position when in a locked position; the locking seat (12) will not restrict the movement of the plug (602) when in an unlocked position; a switching adjustment unit (13) is provided on one side of the locking seat (12); the switching adjustment unit (13) can drive the locking seat (12) to move closer to and away from the plug (602) in a direction perpendicular to the movement of the plug (602), so as to switch between a locked position and an unlocked position; The switching adjustment unit (13) comprises a swing arm (1301), a connecting frame (1302), a push-type electromagnet (1303), and a second elastic member (1304); the middle portion of the swing arm (1301) is rotatably connected to the side wall of the cooling channel (401); the locking seat (12) is connected to the first end of the swing arm (1301); the connecting frame (1302) is connected to the second end of the swing arm (1301); the push-type electromagnet (1303) is arranged on the side wall of the cooling channel (401); the output end of the push-type electromagnet (1303) is connected to the connecting frame (1302); the second elastic member (1304) is connected between the connecting frame (1302) and the push-type electromagnet (1303); and the push-type electromagnet (1303) can switch the locking seat (12) to an unlocked position when powered on, and deform the second elastic member (1304).

2. A fire extinguisher tank welding waste gas recovery device according to claim 1, characterized in that: In one of the cooling channels (401), a plurality of baffles (7) are arranged at intervals along the exhaust gas flow direction, and adjacent baffles (7) are arranged in a staggered manner.

3. The fire extinguisher tank welding waste gas recovery device according to claim 1, characterized in that: A first temperature measuring device (8) for detecting the temperature of the exhaust gas is provided on the introduction pipe (3) or in the temporary storage chamber (2).

4. A fire extinguisher tank welding waste gas recovery device according to claim 3, characterized in that: The device body (1) is provided with a refrigeration device (9) for refrigerating the cooling channel (401), and the cooling channel (401) is provided with a second temperature measuring device (10).

5. The fire extinguisher tank welding waste gas recovery device according to claim 1, characterized in that: A negative pressure chamber (603) is provided in the fixed seat (601), a piston (604) is provided in the negative pressure chamber (603), a connecting column (605) is provided on the plug (602), and the end of the connecting column (605) away from the plug (602) passes through the negative pressure chamber (603) and is connected to the piston (604); an air guide tube (606) connected to the negative pressure chamber (603) is provided on the fixed seat (601), and the end of the air guide tube (606) away from the negative pressure chamber (603) is connected to an exhaust device; a first elastic member (607) is connected between the plug (602) and the fixed seat (601), and the first elastic member (607) is deformed when the plug (602) is in the open position.

6. A method for using a fire extinguisher tank welding waste gas recovery device, applicable to the waste gas recovery device according to claim 4, characterized in that: It also includes a controller, wherein the first temperature measuring device (8), two groups of second temperature measuring devices (10), two groups of refrigeration devices (9), and two groups of opening and closing units (6) are all electrically connected to the controller; and the method of use further includes the following steps: X1. Exhaust gas temperature measurement: The first temperature measuring device (8) measures the temperature of the exhaust gas introduced into the temporary storage chamber (2) and transmits the measured result to the controller; X2. Selecting a cooling channel (401): The controller selects a suitable cooling channel (401) according to the temperature of the exhaust gas; X3. Controlling the cooling temperature: After selecting a suitable cooling channel (401), the corresponding refrigeration device (9) is started to cool the cooling channel (401). During this process, the second temperature measuring device (10) monitors the temperature in the cooling channel (401) in real time. When the measured value reaches the temperature required for cooling, the refrigeration device (9) stops working; X4. Opening the channel: After the temperature inside the cooling channel (401) reaches the temperature required for cooling, the corresponding opening and closing unit (6) connects the cooling channel (401) where it is located with the temporary storage chamber (2).

7. The method for using the fire extinguisher tank welding waste gas recovery device according to claim 6, characterized in that: In step X4, after the channel is opened, the second temperature measuring device (10) continues to monitor the temperature in the cooling channel (401) in real time. When the measured value is higher than the required temperature, the corresponding refrigeration device (9) starts to continue cooling the cooling channel (401).

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