Gas monitoring integrated air suction and exhaust integrated device

Abstract

The invention relates to the technical field of fans, in particular to a gas monitoring integrated air suction and exhaust integrated device. A gas monitoring integrated air suction and exhaust integrated device comprises a fan body and an air pipe, the air pipe is detachably connected with an air outlet and an air supply outlet of the fan body, the gas monitoring integrated air suction and exhaust integrated device further comprises a rotation adjusting structure, and the rotation adjusting structure is arranged above the fan body. And the rotation adjusting structure is used for driving the fan body to rotate by taking the central axis of the fan body as a rotating axis. The device has the following effects that after the air pipe and the fan body are detachably connected and the air pipe is rapidly detached, the fan body is rotated, and the air pipe originally connected to the air outlet of the fan body is installed at the air supply outlet of the fan body, so that the device has the air exhaust function and the air supply function.

Description

Technical Field

[0001] The present application relates to the technical field of fans, and in particular to a gas monitoring and integrated exhaust and extraction device. Background Art

[0002] The power system often maintains underground lines or underground facilities. Due to the closed underground space, rainwater accumulation, and corrosion from debris, harmful gases such as carbon monoxide, combustible gases, and hydrogen sulfide are easily generated. When power workers perform maintenance work in underground confined spaces, the State Grid document requires that when performing confined space operations, the process of ventilation first, detection, and then operation must be carried out. The current method used by power workers is to carry a portable exhaust device, quickly connect the ventilation pipe on site, and then find a mains power supply and exhaust fan power supply. After a period of time, take out the gas detection device they carry, detect the environment in the confined space, and observe whether the gas meets the standard. If it meets the standard, they can carry out confined space safety maintenance operations.

[0003] During summer work, the underground working environment is poor, and the exhaust device needs to change its structure to an air supply mode to provide heat relief during summer work and to ensure the delivery of fresh air underground. However, due to the structural problems of the fan blades themselves, when the fan blades reverse to perform the air supply function, the air volume loss reaches more than 70%. Summary of the invention

[0004] In order to reduce the loss of air volume and facilitate the switching of the air supply and exhaust functions of the fan, the present application provides a gas monitoring integrated exhaust and extraction device.

[0005] The present application provides a gas monitoring integrated exhaust and extraction device, which adopts the following technical solution: it includes a fan body and an air duct, and the air duct is detachably connected to the air outlet and air supply outlet of the fan body, and also includes a rotation adjustment structure, which is arranged above the fan body, and the rotation adjustment structure is used to drive the fan body to rotate with the central axis of the fan body as the rotation axis.

[0006] By adopting the above technical solution, the connection relationship between the air duct and the fan body is detachable, the air duct is quickly removed, the fan body is rotated, and the air duct originally connected to the air outlet of the fan body is installed at the air supply outlet of the fan body, so that the device has both exhaust and supply functions.

[0007] Preferably, it also includes a gas detector, which is used to detect gas in a limited space. The gas detector is provided with a quick connector, and a quick interface is provided on a side wall of one side of the fan body. The quick connector is used to be inserted into the quick interface.

[0008] By adopting the above technical solution, the gas detector is inserted into the quick connector on the fan body through the quick connector. There is no need to carry the gas detection device independently, and there is no need to worry about the battery life of the detector. The gas detector and the fan body are connected by wire, and the battery life is integrated to ensure safety and reliability.

[0009] Preferably, the gas detector includes a main body, an active suction air pump, a gas detection inner cavity, an air inlet and an air outlet, the active suction air pump and the gas detection inner cavity are arranged in the main body, the air inlet and the air outlet are exposed at the top of the main body, the active suction air pump is used to suck external gas into the gas detection inner cavity, a detection element is arranged in the gas detection inner cavity, the detection element is used to detect the external gas sucked into the gas detection inner cavity, and the external gas in the gas detection inner cavity is discharged from the gas detection inner cavity through the air outlet.

[0010] By adopting the above technical solution, the gas passes through the air inlet and is sucked into the gas detection cavity by the active air suction pump for gas detection. After the detection, the gas is discharged from the air outlet, forming a gas flow cycle. The pump-suction structure and the gas detection cavity closed chamber detection environment have high detection efficiency.

[0011] Preferably, the detection component includes four gas sensors, which are distributed in a rectangular shape in the gas detection inner cavity, and are used to detect hydrogen sulfide, carbon monoxide, combustible gas and oxygen, respectively.

[0012] By adopting the above technical solution, four gas sensors can respectively detect the components of hydrogen sulfide, carbon monoxide, combustible gas and oxygen in the gas in real time, making it easy to observe whether the gas in the confined space environment meets the standards. Only if it meets the standards can safety maintenance operations be carried out in the confined space.

[0013] Preferably, an air duct is extended from the air outlet and the air supply outlet of the fan body, the air duct is connected to the fan body, the two air ducts are used to be detachably mounted on the air duct, and the two air ducts are connected to the air duct.

[0014] By adopting the above technical solution, the air outlet and air supply outlet of the fan body are extended with air guide ducts, which is convenient for operators to disassemble and connect the air ducts and provides a guide effect for the air volume generated by the fan body.

[0015] Preferably, a plurality of limit blocks are arranged on the outer wall of the air duct, and the plurality of limit blocks are arranged on the outer wall of the air duct at equal angles along the circumference of the air duct, and a limit channel is formed between two adjacent limit blocks. A plurality of limit matching blocks are arranged on the end face of one end of the air guide duct, and the plurality of limit matching blocks are arranged at equal angles along the circumference of the air guide duct, and the limit matching blocks correspond to the limit channels one by one. When the air guide duct is sleeved on the air duct, the limit channel allows the limit matching blocks to pass axially along the air guide duct.

[0016] By adopting the above technical solution, the gap between the limit blocks allows the limit matching blocks to pass through, which makes it easier for operators to determine the installation position between the air duct and the air guide duct.

[0017] Preferably, the limit fitting block is provided with an avoidance groove for the limit block to be rotatably embedded on the side wall of the air duct radially close to the central axis of the air duct, and the avoidance groove penetrates the limit fitting block along the circumferential direction of the air duct, and the avoidance groove penetrates the side wall of the limit fitting block radially close to the central axis of the air duct, the bottom of the avoidance groove abuts against the limit block, the limit fitting block is provided with an elastic positioning piece, and the elastic positioning piece is arranged on the wall of the avoidance groove, and the side wall of the limit block away from the air duct is provided with a positioning groove for the elastic positioning piece to be embedded.

[0018] By adopting the above technical solution, after the limiting matching block passes through the limiting channel, the air duct is rotated to make the bottom of the avoidance groove contact the limiting block, thereby limiting the axial relative movement of the air duct and the air guide duct.

[0019] Preferably, the elastic positioning member includes a positioning convex ball and a return spring, a positioning groove is provided on the limiting matching block, one end of the return spring is connected to the positioning convex ball, and the other end of the return spring is connected to the bottom of the positioning groove, the positioning convex ball is partially embedded in the positioning groove, and the positioning convex ball is used to be embedded in the positioning groove.

[0020] By adopting the above technical solution, when the air duct is rotated until the positioning protrusion is aligned with the positioning groove, the elastic force of the return spring causes the positioning protrusion to be embedded in the positioning groove, thereby achieving positioning between the air duct and the air guide duct; when removing the air duct, the positioning protrusion can be disengaged from the positioning groove by simply rotating the air duct with force.

[0021] Preferably, the detection element is connected to a control module, the control module is connected to a display screen, the detection element is used to detect gas composition data in the gas in a limited space, and the display screen is used to display the gas composition data; The main body is provided with a humidity and temperature detection module, which is connected to the control module. The humidity and temperature detection module is used to detect the humidity and temperature in a limited space and output a humidity and temperature signal. The control module is used to receive the humidity and temperature signal and control the display screen to display the humidity and temperature in the limited space.

[0022] By adopting the above technical solution, the detection components in the gas detector detect the gas in a limited space in real time, and the display screen displays the detection results in real time. The combination of the humidity and temperature detection module and the control module can realize efficient and accurate monitoring and management of temperature and humidity in a limited space. Operators can easily view environmental data, discover abnormal situations in time and take measures to improve work efficiency.

[0023] Preferably, an audible and visual alarm is provided on the main body, and the audible and visual alarm is connected to the control module. The detection element is used to detect the gas composition data in the gas in a limited space and output a detection signal. The control module is used to receive the detection signal and control the audible and visual alarm to alarm when the corresponding component content is not within the set range.

[0024] By adopting the above technical solution, when it is detected that the gas content is not within the set range, the control module will automatically control the sound and light alarm to send out an alarm signal. Rapid and clear sound and light alarms can attract the attention of personnel and prompt them to quickly take necessary safety measures (such as evacuation, ventilation, rescue, etc.).

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. After the air duct and the fan body are connected in a detachable manner, quickly remove the air duct, rotate the fan body, and install the air duct originally connected to the air outlet of the fan body at the air supply outlet of the fan body, so that the device has both exhaust and air supply functions; 2. The gas detector is inserted into the quick connector on the fan body through a quick connector. There is no need to carry a gas detection device separately, and there is no need to worry about the battery life of the detector. The gas detector and the fan body are connected by wire, and the battery life is integrated to ensure safety and reliability. 3. The gas passes through the air inlet and is sucked into the gas detection cavity by the active air suction pump for gas detection. After the detection, the gas is discharged from the air outlet to form a gas flow cycle. The pump-suction structure and the gas detection cavity closed chamber detection environment have high detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of this application; Figure 2 is a schematic diagram of a gas detector in the present application; Figure 3 is a cross-sectional schematic diagram of the gas detector in the present application; Figure 4 It is an exploded schematic diagram of a part of the structure of the present application; Figure 5 It is a cross-sectional schematic diagram of a part of the structure of the present application; Figure 6 It is a partial structural diagram of this application; Figure 7 yes Figure 1 A partial enlarged schematic diagram of part A; Figure 8 is a circuit diagram of a control module in this application; Fig. 9 It is a circuit diagram of the RS485 communication circuit in this application; Fig.10 is a circuit diagram of the alarm circuit in this application; Fig.11 is a circuit diagram of an air pump control circuit in the present application; Fig.12 is a circuit diagram of a power supply circuit in the present application; Fig.13 It is a circuit diagram of the gas collection general circuit in this application.

[0027] Explanation of reference numerals: 110, fan body; 111, quick connector; 112, handle; 120, air duct; 121, limit block; 122, limit channel; 123, L-shaped clamping groove; 124, convex ring; 125, positioning groove; 130, gas detector; 131, main body; 132, active suction air pump; 133, gas detection cavity; 134, air inlet; 135, air outlet; 136, quick connector; 137, sound and light alarm; 138, temperature and humidity module external probe; 139, plastic protection Sheath; 140, gas sensor; 150, air duct; 151, limit matching block; 152, avoidance groove; 153, clamping block; 154, elastic part; 155, positioning groove; 160, elastic positioning member; 161, positioning convex ball; 162, return spring; 170, support frame; 171, placement platform; 172, support foot; 173, universal wheel; 180, rotating connector; 181, pneumatic gripper; 182, rotating shaft; 183, connecting rod; 184, magnetic block; 190, driving member. DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with the accompanying drawings.

[0029] The present application discloses a gas monitoring integrated exhaust and extraction device, which is used to reduce the loss of air volume and facilitate the switching of the air supply and exhaust functions of the fan.

[0030] Reference Figure 1A gas monitoring integrated exhaust and extraction device comprises a fan body 110, an air duct 120, a gas detector 130 and a rotation adjustment structure. The air duct 120 is detachably connected to the air outlet and the air supply outlet of the fan body 110. The rotation adjustment structure is arranged above the fan body 110. The rotation adjustment structure is used to drive the fan body 110 to rotate with the central axis of the fan body 110 as the rotation axis. After the connection relationship between the air duct 120 and the fan body 110 is detachably connected, the lower air duct 120 is quickly disassembled, the fan body 110 is rotated, and the air duct 120 originally connected to the air outlet of the fan body 110 is installed at the air supply outlet of the fan body 110, so that the device has both exhaust and air supply functions; the gas detector 130 is used to detect the gas in the limited space and observe whether the gas in the limited space environment meets the standard. If it meets the standard, safety maintenance operations in the limited space can be carried out.

[0031] refer to Figure 1-Figure 3 A quick connector 136 is provided on the gas detector 130, and a quick interface 111 is provided on the side wall of one side of the fan body 110. The quick connector 136 is used to be inserted into the quick interface 111. The gas detector 130 is inserted into the quick interface 111 on the fan body 110 through the quick connector 136 to achieve power connection and data connectivity. There is no need to carry a gas detection device independently, and there is no need to worry about the battery life of the detector. The gas detector 130 and the fan body 110 are connected by wire, and the battery life is integrated to ensure safety and reliability.

[0032] Specifically, the gas detector 130 includes a main body 131, an active air pump 132, a gas detection inner cavity 133, an air inlet 134 and an air outlet 135. In the present embodiment, the main body 131 is an aluminum shell, the metal is explosion-proof, has good air tightness, is moisture-proof and liquid splash-proof, the active air pump 132 and the gas detection inner cavity 133 are arranged in the main body 131, the air inlet 134 and the air outlet 135 are both silicone pipes, and the air inlet 134 and the air outlet 135 are exposed at the top of the main body 131. The top and the bottom are both covered with a plastic protective cover 139; the active suction air pump 132 is used to suck external gas into the gas detection cavity 133, and a detection component is arranged in the gas detection cavity 133. The detection component is used to detect the external gas sucked into the gas detection cavity 133. The detection component includes four gas sensors 140. The four gas sensors 140 are distributed in the gas detection cavity 133 in a rectangular shape. The four gas sensors 140 are used to detect hydrogen sulfide, carbon monoxide, combustible gas and oxygen, respectively.

[0033] The gas passes through the air inlet 134 and is sucked into the gas detection cavity 133 by the active air suction pump 132 for gas detection. The four gas sensors 140 respectively detect the components of hydrogen sulfide, carbon monoxide, combustible gas and oxygen in the gas in real time, and the gas is discharged from the air outlet 135 after detection, forming a gas flow cycle. The pump-suction structure and the gas detection cavity 133 closed chamber detection environment have high detection efficiency.

[0034] In addition, a control module is provided in the gas detector 130, and the control module is connected to a display screen. The display screen adopts a 4-inch industrial control screen, which can be installed on the fan body 110. The control module is electrically connected to four gas sensors. The four gas sensors are used to detect the gas composition data in the gas in a limited space and output detection signals. The control module is used to receive the detection limit number and calculate the content of the four gases, and communicate with the display screen through the RS485 communication circuit. The display screen is used to display the percentage of the content of each gas.

[0035] An audible and visual alarm 137 and an external probe 138 for the temperature and humidity module are also provided on the top of the main body 131. The quick connector 136, the external probe 138 for the temperature and humidity module and the audible and visual alarm 137 are arranged at intervals on the top of the main body 131 in sequence. The wet temperature detection module is connected to the control module. The wet temperature detection module is used to detect the humidity and temperature in a limited space and output a wet temperature signal. The control module is used to receive the wet temperature signal and control the display screen to display the humidity and temperature in the limited space. The detection ranges of the four gases can be set in advance by the designer to four preset intervals. The audible and visual alarm 137 is connected to the control module. The control module is used to receive the detection signal and control the audible and visual alarm 137 to alarm when the corresponding component content is not in the set interval. At the same time, it supports abnormal data recording and export.

[0036] refer to Figure 1 , Figure 4In order to facilitate the operator to disassemble and connect the air duct 120, an air duct 150 is extended from the air outlet and the air supply outlet of the fan body 110. The air duct 150 is connected to the fan body 110. The two air ducts 150 are used to be detachably mounted on the air duct 120. The two air ducts 150 are connected to the air duct 120. Specifically, a plurality of limit blocks 121 are arranged on the outer wall of the air duct 120 at equal angles along the circumference of the air duct 120. A limited channel 122 is formed between two adjacent limit blocks 121. A plurality of limit matching blocks 151 are arranged on the end surface of one end of the air duct 150. The plurality of limit matching blocks 151 are arranged at equal angles along the circumference of the air duct 150. The limit matching blocks 151 are arranged one by one with the limit channel 122. Correspondingly, when the air duct 150 is sleeved on the air duct 120, the limiting channel 122 allows the limiting matching block 151 to pass axially along the air duct 150, and a side wall of the limiting matching block 151 radially close to the central axis of the air duct 150 is provided with an avoidance groove 152 for the limiting block 121 to be rotatably embedded, and the avoidance groove 152 penetrates the limiting matching block 151 circumferentially along the air duct 150, and the avoidance groove 152 penetrates the side wall of the limiting matching block 151 radially close to the central axis of the air duct 150, and the bottom of the avoidance groove 152 abuts against the limiting block 121. After the limiting matching block 151 passes through the limiting channel 122, the air duct 120 is rotated to make the bottom of the avoidance groove 152 abut against the limiting block 121, thereby limiting the axial relative movement of the air duct 120 and the air duct 150.

[0037] Correspondingly, a plurality of clamping blocks 153 are arranged on the inner wall of the air duct 150, and the plurality of clamping blocks 153 are arranged on the inner wall of the air duct 150 at equal angles along the circumference of the air duct 150. A plurality of L-shaped clamping grooves 123 for the clamping blocks 153 to be embedded are opened on the outer wall of the air duct 120, and the L-shaped clamping grooves 123 and the clamping blocks 153 correspond to each other one by one. The plurality of L-shaped clamping grooves 123 are opened on the air duct 120 at equal angles along the circumference of the air duct 120. On the outer wall of the tube 120, when the limiting matching block 151 enters the limiting channel 122, the clamping block 153 enters the L-shaped clamping groove 123 along the axial direction of the air duct 120. When the air duct 120 is rotated to make the bottom of the avoidance groove 152 contact the limiting block 121, the clamping block 153 slides in the L-shaped clamping groove 123 along the circumference of the air duct 120, forming a double guarantee for the connection relationship between the air duct 120 and the air guide duct 150.

[0038] Furthermore, a circle of convex rings 124 are provided on the outer wall of the air duct 120, and the convex rings 124 are located between the L-shaped clamping groove 123 and the limit block 121 along the axial direction of the air duct 120. An elastic part 154 for embedding the convex rings 124 is provided on the inner wall of the air guide duct 150, thereby improving the connection sealing between the air duct 120 and the air guide duct 150.

[0039] Specifically, refer to Figure 4 , Figure 5 The limiting matching block 151 is provided with an elastic positioning member 160, which is arranged on the groove wall of the avoidance groove 152. A positioning groove 125 for the elastic positioning member 160 to be embedded is provided on the side wall of the limiting block 121 away from the air duct 120. The elastic positioning member 160 includes a positioning convex ball 161 and a return spring 162. The limiting matching block 151 is provided with a positioning embedding groove 155. One end of the return spring 162 is connected to the positioning convex ball 161, and the other end of the return spring 162 is connected to the positioning embedding groove. 155 is connected to the bottom of the groove, and the positioning convex ball 161 is partially embedded in the positioning embedding groove 155. The positioning convex ball 161 is used to be embedded in the positioning groove 125. When the air duct 120 is rotated until the positioning convex ball 161 is relatively engaged with the positioning groove 125, the elastic force of the return spring 162 causes the positioning convex ball 161 to be embedded in the positioning groove 125, thereby realizing the positioning between the air duct 120 and the air guide duct 150; when disassembling the air duct 120, the positioning convex ball 161 can be disengaged from the positioning groove 125 by simply rotating the air duct 120 with force.

[0040] refer to Figure 1 , Figure 6 and Figure 7 The rotation adjustment structure includes a support frame 170, a driving member 190 and a rotating connecting member 180. The support frame 170 is used to be arranged directly above the fan body 110. In the present embodiment, the support frame 170 is composed of a horizontally arranged placement platform 171 and four rectangular supporting feet 172 distributed at the bottom of the placement platform 171. A universal wheel 173 is arranged below the supporting foot 172 to facilitate the movement of the support frame 170. The driving member 190 is arranged on the support frame 170. The driving member 190 is a driving motor. The rotating connecting member 180 includes a pneumatic gripper 181, a rotating shaft 182 and a connecting rod 183. The connecting rod 183 is arranged horizontally, one end of the rotating shaft 182 is connected to the axial middle end of the connecting rod 183, and the other end of the rotating shaft 182 is coaxially connected to the output shaft of the driving motor. Two pneumatic grippers 181 are provided, and the two pneumatic grippers 181 are respectively connected to the two ends of the connecting rod 183.

[0041] Correspondingly, two handles 112 are provided on the top of the fan body 110, and the two handles 112 are symmetrically arranged on the top of the fan body 110. Two pneumatic grippers 181 are respectively used to grasp the handles of the two handles 112. A magnetic block 184 is provided at the bottom of the pneumatic gripper 181. The handles of the handles 112 are made of magnetic material. When the pneumatic gripper 181 approaches the handles of the handles 112, due to magnetic attraction, the handles 112 are made upright for easy clamping by the pneumatic gripper 181. After the two pneumatic grippers 181 grasp the handles of the two handles 112 respectively, the drive motor starts to drive the fan body 110 to rotate together, thereby realizing the switching of the air outlet and the air supply outlet of the fan body 110. After the air duct 120 and the fan body 110 are connected in a detachable manner, the air duct 120 is quickly removed, the fan body 110 is rotated, and the air duct 120 originally connected to the air outlet of the fan body 110 is installed at the air supply outlet of the fan body 110, so that the device has both exhaust and air supply functions; the gas detector 130 is inserted into the quick connector 111 on the fan body 110 through the quick connector 136, and there is no need to carry the gas detection device independently, and there is no need to worry about the battery life of the detector. The gas detector 130 and the fan body 110 are connected by wire, and the battery life is integrated to ensure safety and reliability.

[0042] In addition, refer to Figure 8 , Fig. 9 , Fig.12 The gas detector 130 also includes an RS485 communication circuit, which includes a first chip U13, a fifth switch Q5 and a sixth switch Q6. The fifth switch Q5 and the sixth switch Q6 both use NPN transistors. A main control module is provided in the fan body 110. The control module includes an MCU chip U8. The MCU chip sends the data detected by the gas detector to the main control module through the RS485 communication circuit. The main control module communicates with the display screen so that the display screen displays the detection data (including humidity, temperature and the content of each gas component). The fourth pin of the MCU chip is connected to a power supply circuit, which can use a switching power supply (see Figure 8), the input end of the power supply circuit is connected to a power supply, the power supply can be AC ​​power or a battery, the two output ends of the power supply circuit are used to provide 3.3V and 5V respectively, the four input pins of the MCU chip are respectively connected to the four gas sensors, the first pin and the second pin of the MCU chip are respectively connected to the two input ends RX / TX of the RS485 communication circuit, the two input ends of the RS485 communication circuit are respectively connected to the control end of the fifth switch component and the input end of the sixth switch component, the output end of the fifth switch component and the output end of the sixth switch component are respectively connected to the two input pins of the first chip, the input end of the fifth switch component and the control end of the sixth switch component are both connected to the power supply circuit, the output pin A- / B- of the first chip is used to be connected to the input end of the main control module, and the output end of the main control module is connected to the display screen.

[0043] Reference Figure 8 , Fig.10 The gas detector 130 also includes an alarm circuit, which includes an alarm interface BUZZ and a fourth switch element Q4. The fourth switch element Q4 uses an NPN transistor. The alarm interface is electrically connected to the sound and light alarm 137. The first pin of the alarm interface is connected to the power supply circuit, the second pin of the alarm interface is connected to the input end of the fourth switch element, the output end of the fourth switch element is grounded, and the control end of the fourth switch element is connected to the third pin of the MCU chip.

[0044] Reference Figure 8 , Fig.11 The gas detector 130 also includes an air pump control circuit, the input end of the air pump control circuit is connected to the seventh pin of the MCU chip, the air pump control circuit includes an air pump connection interface XH6 and a third switch element Q3, the third switch element Q3 adopts an NPN transistor, the output end of the air pump connection interface is electrically connected to the active suction air pump 132, the first interface of the air pump connection interface is connected to the input end of the third switch element, the second interface of the air pump connection interface is connected to the 5V output end of the power supply circuit, the control end of the third switch element is connected to the input end of the air pump control circuit, and the output end of the third switch element is grounded.

[0045] Reference Figure 8 , Fig.13 Finally, four gas collection general circuits are set between the gas sensor and the control module to realize the signal collection and transmission of the electrochemical sensor. The output ends of the four gas collection general circuits are connected to the eleventh to fourteenth input pins of the control module (LEL represents combustible gas, H2S represents hydrogen sulfide, CO represents carbon monoxide, and O2 represents oxygen). The specific gas collection general circuit can be seen Fig.13 .

[0046] The implementation principle of a gas monitoring integrated exhaust and extraction device in an embodiment of the present application is as follows: after the air duct 120 and the fan body 110 are connected in a detachable manner, the air duct 120 is quickly removed, the fan body 110 is rotated, and the air duct 120 originally connected to the air outlet of the fan body 110 is installed at the air supply outlet of the fan body 110, so that the device has both exhaust and air supply functions; the gas detector 130 is inserted into the quick connector 111 on the fan body 110 through the quick connector 136, and there is no need to carry the gas detection device independently, and there is no need to worry about the battery life of the detector. The gas detector 130 and the fan body 110 are connected by wire, and the battery life is integrated to ensure safety and reliability.

[0047] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A gas monitoring integrated exhaust and extraction device, comprising a fan body (110) and an air duct (120), characterized in that: The air duct (120) is detachably connected to the air outlet and the air supply outlet of the fan body (110), and further comprises a rotation adjustment structure, wherein the rotation adjustment structure is arranged above the fan body (110), and the rotation adjustment structure is used to drive the fan body (110) to rotate with the central axis of the fan body (110) as the rotation axis (182).

2. A gas monitoring integrated exhaust and extraction device according to claim 1, characterized in that: It also includes a gas detector (130) for detecting gas in a limited space, the gas detector (130) being provided with a quick connector (136), a quick connector (111) being provided on a side wall of one side of the fan body (110), the quick connector (136) being used to be inserted into the quick connector (111).

3. A gas monitoring integrated exhaust and extraction device according to claim 2, characterized in that: The gas detector (130) comprises a main body (131), an active air suction pump (132), a gas detection inner cavity (133), an air inlet (134) and an air outlet (135); the active air suction pump (132) and the gas detection inner cavity (133) are arranged in the main body (131); the air inlet (134) and the air outlet (135) are exposed at the top of the main body (131); the active air suction pump (132) is used to suck external gas into the gas detection inner cavity (133); a detection component is arranged in the gas detection inner cavity (133); the detection component is used to detect the external gas sucked into the gas detection inner cavity (133); the external gas in the gas detection inner cavity (133) is discharged from the gas detection inner cavity (133) through the air outlet (135).

4. A gas monitoring integrated exhaust and extraction device according to claim 3, characterized in that: The detection component comprises four gas sensors (140), the four gas sensors (140) being distributed in a rectangular shape in the gas detection inner cavity (133), and the four gas sensors (140) being used to detect hydrogen sulfide, carbon monoxide, combustible gas and oxygen respectively.

5. The gas monitoring integrated exhaust and extraction device according to claim 1, characterized in that: An air duct (150) is extended from the air outlet and the air supply outlet of the fan body (110); the air duct (150) is connected to the fan body (110); the two air ducts (150) are used to be detachably mounted on the air duct (120); and the two air ducts (150) are connected to the air duct (120).

6. A gas monitoring integrated exhaust and extraction device according to claim 5, characterized in that: A plurality of limit blocks (121) are arranged on the outer wall of the air duct (120), and the plurality of limit blocks (121) are arranged on the outer wall of the air duct (120) at equal angles along the circumference of the air duct (120), and a limit channel (122) is formed between two adjacent limit blocks (121). A plurality of limit matching blocks (151) are arranged on an end surface of one end of the air guide duct (150), and the plurality of limit matching blocks (151) are arranged at equal angles along the circumference of the air guide duct (150), and the limit matching blocks (151) correspond one to one with the limit channels (122). When the air guide duct (150) is sleeved on the air duct (120), the limit channel (122 allows the limit matching blocks (151) to pass axially along the air guide duct (150).

7. A gas monitoring integrated exhaust and extraction device according to claim 6, characterized in that: A side wall of the limiting matching block (151) is provided on one side of the air guiding tube (150) radially close to the central axis of the air guiding tube (150) to allow the limiting block (121) to be rotatably embedded therein. The avoiding groove (152) penetrates the limiting matching block (151) along the circumferential direction of the air guiding tube (150). The avoiding groove (152) penetrates the limiting matching block (151) radially close to the central axis of the air guiding tube (150) along the air guiding tube (150). A side wall of one side of the central axis of the air guide duct (150), the bottom of the avoidance groove (152) abuts against the limit block (121), an elastic positioning member (160) is provided on the limit matching block (151), the elastic positioning member (160) is arranged on the groove wall of the avoidance groove (152), and a positioning groove (125) for embedding the elastic positioning member (160) is provided on the side wall of the limit block (121) away from the air duct (120).

8. The gas monitoring integrated exhaust and extraction device according to claim 7, characterized in that: The elastic positioning member (160) comprises a positioning convex ball (161) and a return spring (162); a positioning embedding groove (155) is provided on the limiting matching block (151); one end of the return spring (162) is connected to the positioning convex ball (161); the other end of the return spring (162) is connected to the bottom of the positioning embedding groove (155); the positioning convex ball (161) is partially embedded in the positioning embedding groove (155); and the positioning convex ball (161) is used to be embedded in the positioning groove (125).

9. The gas monitoring integrated exhaust and extraction device according to claim 3, characterized in that: The detection element is connected to a control module, the control module is connected to a display screen, the detection element is used to detect gas composition data in the gas in a limited space, and the display screen is used to display the gas composition data; The main body (131) is provided with a humidity and temperature detection module, the humidity and temperature detection module is connected to the control module, the humidity and temperature detection module is used to detect the humidity and temperature in the limited space and output a humidity and temperature signal, and the control module is used to receive the humidity and temperature signal and control the display screen to display the humidity and temperature in the limited space.

10. A gas monitoring integrated exhaust and extraction device according to claim 9, characterized in that: The main body (131) is provided with an audible and visual alarm (137), the audible and visual alarm (137) being connected to a control module, the detection element being used to detect gas component data in the gas within a limited space and output a detection signal, the control module being used to receive the detection signal and control the audible and visual alarm (137) to alarm when the corresponding component content is not within a set interval.

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