Indoor environment monitoring air collection device
Through the combined structure of hydraulic rod and cross limit rod, the problem that the monitor cannot maintain a horizontal state in different scenarios is solved, the measurement accuracy of the particulate matter sensor is ensured, and the horizontal installation and detection accuracy is achieved in any environment.
Patent Information
- Application Number
- CN202411460071.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-01-07
AI Technical Summary
The existing indoor environment monitoring and air acquisition device may cause the monitor to be unable to maintain a horizontal state in different working scenarios, affecting the entry and detection accuracy of particulate matter.
Using a combined structure of hydraulic rod and cross limit rod, the support plate rotates under the action of cross limit rod through the expansion and contraction of hydraulic rod, ensuring that the support plate is always in a horizontal state, ensuring the horizontal installation of the monitor and sampling unit, and avoiding particles. Stack and detect interference.
The measurement accuracy of the particulate matter sensor is improved, ensuring that the support plate is always level in any working environment, preventing particulate matter accumulation and detection interference, and improving the measurement accuracy of the air collection device.
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Figure CN119267720A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of indoor air quality monitoring equipment, and in particular to an air collection device for indoor environment monitoring. Background Art
[0002] Indoor environmental monitoring air collection devices are devices used to detect and analyze indoor air quality. These devices can measure a variety of parameters, including but not limited to temperature, humidity, carbon dioxide (CO2), carbon monoxide (CO), volatile organic compounds (VOCs), fine particulate matter (PM2.5 and PM10) and other pollutant levels. Such devices are very important for ensuring the health and safety of living or working environments, especially in areas with high urbanization and severe pollution.
[0003] Existing indoor environment monitoring air collection devices are usually installed on a tripod on a support plate, and then the sampling unit and the indoor monitor are installed on the tripod. The sampling unit and the indoor monitor are supported by the tripod to sample the air. However, when facing different working scenarios, the existing tripod structure may cause the indoor monitor to be unable to maintain a horizontal state after installation. Certain angles may cause particle accumulation or affect the entry and detection of particles, thereby affecting the measurement accuracy of the particle sensor. Summary of the invention
[0004] In order to improve the measurement accuracy of an air collection device, the present application provides an indoor environment monitoring air collection device.
[0005] The present application provides an indoor environment monitoring air collection device that adopts the following technical solution: An indoor environment monitoring air collection device comprises a tripod, a monitor and a sampling unit, wherein the tripod is provided with a mounting seat, the monitor and the sampling unit are mounted on the mounting seat, the sampling unit is provided with an air inlet, the sampling unit is connected to the monitor, the tripod is provided with a locking device, the mounting seat is connected to the tripod through the locking device, a horizontal mounting piece is provided on the mounting seat, the horizontal mounting piece comprises a hydraulic rod, a support rod, a cross limit rod and a support plate, the support rod is mounted on the upper end surface of the mounting seat, a U-shaped rod is provided at one end of the support rod away from the mounting seat, two ends of the cross limit rod in the same horizontal direction are respectively rotatably connected to the two ends of the U-shaped rod, two ends of the cross limit rod in the horizontal direction are respectively rotatably connected to the two ends of the support plate, two hydraulic rods are provided, one end of the hydraulic rod is hinged on the mounting seat, and the other end of the hydraulic rod is hinged on the support plate, and the monitor and the sampling unit are mounted on the horizontal mounting piece.
[0006] By adopting the above technical scheme, the support rod is supported on the upper end surface of the mounting seat, and a U-shaped rod is arranged at one end of the support rod away from the mounting seat, and the two ends of the cross limit rod in the same horizontal direction are respectively rotatably connected to the two ends of the U-shaped rod, and the two ends of the cross limit rod in the other horizontal direction are respectively rotatably connected to the support plate, and one end of the two hydraulic rods is hinged on the mounting seat, and the other end of the hydraulic rod is hinged on the support plate, so that through the extension and contraction of the two hydraulic rods, a force is applied to different parts of the support plate, so that the support plate is rotated in different directions relative to the support plate under the action of the cross limit rod, thereby ensuring that the support plate is always in a horizontal state, so that the monitor and sampling unit installed on the support plate are also kept in a horizontal state, ensuring that there is a certain angle when the particles enter the particle sensor, avoiding the accumulation of particles or affecting the entry and detection of particles, thereby affecting the measurement accuracy of the particle sensor.
[0007] In a specific feasible implementation scheme, one end of the two hydraulic rods is installed on one end of the mounting seat and the angle formed by the line connecting the middle part of the mounting seat is a right angle, and the other end of the two hydraulic rods is installed on one end of the support plate and is correspondingly installed on one end of the mounting seat.
[0008] By adopting the above technical solution, one end of the two hydraulic rods is installed between one end of the mounting seat and the support rod to form a right angle, and the other end of the two hydraulic rods is installed on one end of the support plate and is correspondingly installed on one end of the mounting seat, thereby ensuring that the two hydraulic rods can cooperate to drive the support plate to rotate in all directions, thereby increasing the rotation angle of the support plate, so as to ensure that the support plate can always remain in a horizontal state in any working environment.
[0009] In a specific feasible implementation scheme, universal balls are installed at both ends of the hydraulic rod, a mounting seat ball socket is provided on the mounting seat, a support plate ball socket is provided on the support plate, the universal balls at both ends of the hydraulic rod are respectively installed in the support plate ball socket and the mounting seat ball socket, and the universal balls at both ends can respectively rotate in the support plate ball socket and the mounting seat ball socket.
[0010] By adopting the above technical solution, universal balls are installed at both ends of the hydraulic rod, a mounting seat ball socket is opened on the mounting seat, a support plate ball socket is opened on the support plate, and the universal balls at both ends of the hydraulic rod are respectively installed in the mounting seat ball socket and the support plate ball socket, thereby avoiding the problem of jamming due to structural limitations when the support plate is driven to rotate by the hydraulic rod.
[0011] In a specific feasible implementation scheme, the locking device includes a first locking seat and a second locking seat, the first locking seat is installed at the bottom of the mounting seat, the second locking seat is installed at the upper end of the tripod, the first locking seat is provided with a first limit block, the second locking seat is provided with a second limit block, and the first limit block can be detachably connected to the second limit block.
[0012] In a specific implementation scheme, a first limiting groove is formed at one end of the first limiting block, and a second limiting groove is formed at one end of the second limiting block. The first limiting block can be snapped into the second limiting groove, and the second limiting block can be snapped into the first limiting groove.
[0013] By adopting the above technical solution, a first limiting groove is opened at one end of the first limiting block, and a second limiting groove is opened at one end of the second limiting block. By rotating the mounting seat, the first limiting block is clamped in the second limiting groove, and the second limiting block is clamped in the first limiting groove, thereby realizing a detachable connection between the mounting seat and the tripod, which is convenient for disassembly and assembly of the mounting seat.
[0014] In a specific possible implementation manner, the thickness of the first limit block is set from thin to thick from adjacent to the first limit groove to away from the first limit groove, and the thickness of the second limit block is set from thin to thick from adjacent to the second limit groove to away from the second limit groove.
[0015] By adopting the above technical solution, the thickness of the first limit block is set from thin to thick from the direction adjacent to the first limit groove to the direction away from the first limit groove, and the thickness of the second limit block is set from thin to thick from the direction adjacent to the second limit groove to the direction away from the second limit groove, thereby facilitating the first limit block to enter the second limit groove and the second limit block to enter the first limit groove, which can play a guiding role.
[0016] In a specific implementation scheme, two of the first limit blocks and the second limit blocks are provided, the two first limit blocks are symmetrically installed relative to the center of the mounting seat, and the positions of the two second limit blocks correspond to the two first limit blocks.
[0017] By adopting the above technical solution, two first limit blocks and two second limit blocks are provided, so that the tightness of the connection between the mounting base and the tripod is improved by the mutual clamping of the two groups of first limit blocks and the second limit blocks.
[0018] In a specific possible implementation scheme, it also includes a first mounting plate, which is installed on one side of the horizontal mounting member. A plug-in block is provided on the first mounting plate. A card slot is opened on the monitor, and the plug-in block can be plugged into the card slot to install the monitor.
[0019] In a specific possible implementation scheme, it also includes a second mounting plate, which is mounted on the side of the horizontal mounting member away from the monitor, and a mounting groove is provided on the second mounting plate. The sampling unit includes a pretreatment bottle and a gas collecting pipe, and the pretreatment bottle is mounted in the mounting groove. The gas collecting pipe is on the pretreatment bottle, and the pretreatment bottle is filled with a desiccant.
[0020] In a specific possible implementation scheme, a partition is provided in the pretreatment bottle, and the partition is installed in the middle part of the pretreatment bottle, one end of the partition is installed on the inner upper end surface of the pretreatment bottle, and the other end of the partition extends toward the bottom of the pretreatment bottle, and the lower end of the partition is not connected to the pretreatment bottle, and the connection parts of the pretreatment bottle with the gas collecting pipe and the monitor are respectively located on both sides of the partition.
[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. The support rod is supported on the upper end surface of the mounting seat, and a U-shaped rod is arranged at one end of the support rod away from the mounting seat. Two ends of the cross limit rod in the same horizontal direction are respectively rotatably connected to the two ends of the U-shaped rod, and two ends of the cross limit rod in the other horizontal direction are respectively rotatably connected to the support plate. One end of the two hydraulic rods is hinged on the mounting seat, and the other end of the hydraulic rod is hinged on the support plate. Thus, through the extension and contraction of the two hydraulic rods, a force is applied to different parts of the support plate, so that the support plate rotates in different directions relative to the support plate under the action of the cross limit rod, thereby ensuring that the support plate is always in a horizontal state, so that the monitor and sampling unit installed on the support plate are also kept in a horizontal state, ensuring that there is a certain angle when the particles enter the particle sensor, avoiding the accumulation of particles or affecting the entry and detection of particles, thereby affecting the measurement accuracy of the particle sensor; 2. One end of the two hydraulic rods is installed between one end of the mounting seat and the support rod to form a right angle, and the other end of the two hydraulic rods is installed on one end of the support plate and correspondingly installed on one end of the mounting seat, so as to ensure that the two hydraulic rods can drive the support plate to rotate in all directions, increase the rotation angle of the support plate, and ensure that the support plate can always maintain a horizontal state in any working environment; 3. A first limiting groove is formed at one end of the first limiting block, and a second limiting groove is formed at one end of the second limiting block. By rotating the mounting base, the first limiting block is snapped into the second limiting groove, and the second limiting block is snapped into the first limiting groove, thereby realizing a detachable connection between the mounting base and the tripod, which is convenient for disassembly and assembly of the mounting base. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.
[0023] Figure 2 It is a schematic diagram of the fracture structure of the locking device in the embodiment of the present application.
[0024] Figure 3 This is a schematic diagram of the fracture structure in which the monitor and the sampling unit are installed on the mounting base in the embodiment of the present application.
[0025] Figure 4 This is a structural schematic diagram illustrating the connection relationship between the horizontal mounting member and the mounting seat in the embodiment of the present application.
[0026] Figure 5 It is a cross-sectional view of the pretreatment bottle in the embodiment of the present application.
[0027] Explanation of the reference numerals in the accompanying drawings: 1. tripod; 2. mounting seat; 21. mounting seat ball socket; 3. monitor; 31. card slot; 4. sampling unit; 41. pretreatment bottle; 42. gas collecting pipe; 43. partition; 5. locking device; 51. first locking seat; 52. second locking seat; 53. first limit block; 531. first limit groove; 54. second limit block; 541. second limit groove; 6. horizontal mounting member; 61. hydraulic rod; 62. support rod; 63. cross limit rod; 64. support plate; 641. support plate ball socket; 65. U-shaped rod; 66. universal ball; 7. first mounting plate; 71. plug-in slot; 72. plug-in block; 8. second mounting plate; 81. plug-in plate; 82. mounting slot; 9. limit screw; 10. limit nut. DETAILED DESCRIPTION
[0028] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0029] In this specification, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features.
[0030] The embodiment of the present application discloses an air collection device for indoor environment monitoring.
[0031] like Figure 1As shown, the indoor environment monitoring air collection device includes a tripod, a mounting seat, a monitor, a sampling unit, a locking device and a horizontal mounting piece. The tripod preferably adopts a common tripod support frame structure, which has the effect of adjusting the height and supporting. The tripod is installed on the upper end of the tripod through a locking device, and the horizontal mounting piece is installed on the mounting seat. The horizontal mounting piece has the function of adjusting the level. The monitor and the sampling unit are installed on the horizontal mounting piece. The monitor adopts a common air monitoring device, including a shell, a display module and a control module are installed on the shell, and a sensor module, a data processing module, a communication module and a power supply system are installed in the shell. The sensor module includes a temperature and humidity sensor, a particle sensor and a gas sensor and other structures. After the data is processed by the data processing module, it is sent to the background cloud through the communication module for monitoring.
[0032] like Figure 2 As shown, the locking device includes a first locking seat and a second locking seat, the first locking seat is installed at the bottom of the mounting seat, and the second locking seat is at the upper end of the tripod of the mounting seat, and two first limit blocks are arranged on the first locking seat, and the two first limit blocks are symmetrically installed relative to the center of the first locking seat, and the first limit block is preferably set as an arc block, and a first limit groove is opened at one end of the first limit block, and the thickness of the first limit block is set from thin to thick from adjacent to the first limit groove to away from the first limit groove. The second locking seat is set, and two second limit blocks are set on the second locking seat corresponding to the first limit block, and the shape of the second limit block corresponds to the first limit block, and the second limit block corresponds to the first limit block with a second limit groove, and the thickness of the second limit block is set from thin to thick from adjacent to the second limit groove to away from the second limit groove.
[0033] When the mounting base is installed on the tripod, the first locking base is docked with the second locking base, and the mounting base is rotated. The first locking base is driven to rotate by the mounting base, and the first locking base drives the first limit block to rotate. The thinner end of the first limit block is first inserted into the second limit groove, thereby guiding the first limit block. As the first locking base rotates, the thicker part of the first limit block enters the second limit groove until the last part enters the second locking base and abuts against the side wall of the second limit groove. The principle of installing the second limit block in the first limit groove is the same as above, thereby ensuring the tightness of the connection between the mounting base and the tripod while ensuring the convenience of the connection between the mounting base and the tripod, so that the mounting base and the tripod can be quickly disassembled and assembled.
[0034] like Figure 3As shown, the horizontal mounting part includes a hydraulic rod, a support rod, a cross limit rod and a support plate, one end of the support rod is installed in the middle part of the mounting seat, a U-shaped rod is arranged at one end of the support rod away from the mounting seat, the support rod is welded to the middle part of the U-shaped rod, and the U-shaped opening of the U-shaped rod is arranged away from the support rod, the cross limit rod is composed of two limit rods, and the two limit rods are arranged perpendicular to each other, the middle parts of the two limit rods are connected to each other, the two ends of one limit rod are respectively rotatably connected to the inner side walls of the two sides of the U-shaped rod, and the two ends of the other limit rod are respectively rotatably connected to the lower end of the support plate, the hydraulic rod is arranged There are two hydraulic rods, which are respectively installed on the mounting seat and the support plate. The two hydraulic rods are installed on the line between one end of the mounting seat and the middle part of the mounting seat to form a right angle. The two hydraulic rods are installed on the line between one end of the support plate and the middle part of the support plate to form a right angle. Universal balls are installed at both ends of the hydraulic rods, a mounting seat ball socket is provided on the mounting seat, and a support plate ball socket is provided on the support plate. The universal balls at both ends of the hydraulic rods are respectively installed in the support plate ball socket and the mounting seat ball socket, and the universal balls at both ends can rotate in the support plate ball socket and the mounting seat ball socket respectively, and a spirit level is provided on the support plate.
[0035] The support rod is supported on the upper end surface of the mounting base, and a U-shaped rod is arranged at one end of the support rod away from the mounting base, and the two ends of the cross limit rod in the same horizontal direction are respectively rotatably connected to the two ends of the U-shaped rod, and the two ends of the cross limit rod in the other horizontal direction are respectively rotatably connected to the support plate, and one end of the two hydraulic rods is hinged on the mounting base, and the other end of the hydraulic rod is hinged on the support plate, so that through the extension and contraction of the two hydraulic rods, force is applied to different parts of the support plate, so that the support plate is rotated in different directions relative to the support plate under the action of the cross limit rod, thereby ensuring that the support plate is always in a horizontal state, so that the monitor and sampling unit installed on the support plate are also kept in a horizontal state, ensuring that there is a certain angle when the particles enter the particle sensor, avoiding the accumulation of particles or affecting the entry and detection of particles, thereby affecting the measurement accuracy of the particle sensor.
[0036] like Figure 4 and Figure 5As shown, in the embodiment of the present application, it also includes a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate, a limiting screw and a limiting nut are arranged on the support plate, a limiting hole is arranged on the first mounting plate, the limiting screw can be arranged through the limiting hole, and then is threadedly connected to the limiting screw through the limiting nut, so that the first mounting plate is clamped between the limiting nut and the mounting seat to install the first mounting plate, a plug-in block is arranged on the first mounting plate, and a card slot is arranged on the monitor, the plug-in block can be plugged into the card slot, so that the monitor is installed on one side of the support plate, a plug-in slot is arranged on the side of the first mounting plate away from the monitor, and a plug-in plate is arranged on the second mounting plate, and the plug-in plate can The second mounting plate can be plugged into the plug-in slot, so that the second mounting plate is installed on the side of the mounting seat away from the monitor. Two mounting slots are provided on the second mounting plate. Two groups of sampling units are provided. The sampling unit includes a pretreatment bottle and a gas collecting tube. The pretreatment bottle is plugged into the mounting slot. The pretreatment bottle is connected to the monitor through a hose. The gas collecting tube is installed on the pretreatment bottle. The pretreatment bottle is provided with a partition. One end of the partition is installed on the upper end surface of the pretreatment bottle, and the other end of the partition extends toward the bottom of the pretreatment bottle, but is not connected to the bottom of the pretreatment bottle. A common desiccant on the market is provided in the pretreatment bottle. The gas collecting tube and the hose are both connected to the upper end surface of the gas collecting bottle, and the connecting parts are respectively located at the parts on both sides of the partition.
[0037] The implementation principle of an indoor environment monitoring air collection device of the embodiment of the present application is as follows: support the tripod on the ground and adjust it to a suitable height, dock the first locking seat with the second locking seat, and rotate the mounting seat, drive the first locking seat to rotate through the mounting seat, and the first locking seat drives the first limiting block to rotate, and the thinner end of the first limiting block is first inserted into the second limiting groove, thereby guiding the first limiting block, and with the rotation of the first locking seat, the thicker part of the first limiting block enters the second limiting groove until the last part enters the second locking seat and abuts against the side wall of the second limiting groove, and the principle of installing the second limiting block into the first limiting groove is the same as above, so that the mounting seat is installed on the support frame, rotate and remove the limiting nut, install the first mounting plate on the support plate, install the limiting nut on the limiting screw, and rotate and tighten to fix the first mounting plate, install the second mounting plate on the first mounting plate, and then install the monitor and the sampling unit at the predetermined position, and then connect the sampling unit and the monitor; Whether the support plate is in a horizontal state is determined by the spirit level. If it is not in a horizontal state, force is applied to different parts of the support plate through the extension and retraction of the two hydraulic rods, so that the support plate rotates in different directions relative to the support plate under the action of the cross limit rods, thereby ensuring that the support plate is always in a horizontal state, so that the monitor and sampling unit installed on the support plate also remain in a horizontal state, ensuring that there is a certain angle when particles enter the particle sensor, avoiding particle accumulation or affecting the entry and detection of particles, thereby affecting the measurement accuracy of the particle sensor.
[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. An indoor environment monitoring air collection device, comprising a tripod, a monitor and a sampling unit, wherein the tripod is provided with a mounting seat, the monitor and the sampling unit are mounted on the mounting seat, the sampling unit is provided with an air inlet, and the sampling unit is connected to the monitor, characterized in that: The tripod is provided with a locking device, and the mounting seat is connected to the tripod through the locking device. The mounting seat is provided with a horizontal mounting piece, and the horizontal mounting piece includes a hydraulic rod, a support rod, a cross limit rod and a support plate. The support rod is installed on the upper end surface of the mounting seat, and a U-shaped rod is provided at one end of the support rod away from the mounting seat. The two ends of the cross limit rod in the same horizontal direction are respectively rotatably connected to the two ends of the U-shaped rod, and the two ends of the cross limit rod in the horizontal direction are respectively rotatably connected to the two ends of the support plate. Two hydraulic rods are provided, one end of the hydraulic rod is hinged on the mounting seat, and the other end of the hydraulic rod is hinged on the support plate. The monitor and the sampling unit are installed on the horizontal mounting piece.
2. The indoor environment monitoring air collection device according to claim 1, characterized in that: One end of the two hydraulic rods is installed on one end of the mounting seat, and the angle formed by the line connecting the middle part of the mounting seat is a right angle. The other ends of the two hydraulic rods are installed on one end of the support plate and are correspondingly installed on one end of the mounting seat.
3. The indoor environment monitoring air collection device according to claim 1 or 2, characterized in that: Universal balls are installed at both ends of the hydraulic rod, a mounting seat ball socket is provided on the mounting seat, and a support plate ball socket is provided on the support plate. The universal balls at both ends of the hydraulic rod are respectively installed in the support plate ball socket and the mounting seat ball socket, and the universal balls at both ends can rotate in the support plate ball socket and the mounting seat ball socket respectively.
4. The indoor environment monitoring air collection device according to claim 1, characterized in that: The locking device includes a first locking seat and a second locking seat, the first locking seat is installed at the bottom of the mounting seat, the second locking seat is installed at the upper end of the tripod, the first locking seat is provided with a first limit block, the second locking seat is provided with a second limit block, and the first limit block can be detachably connected to the second limit block.
5. The indoor environment monitoring air collection device according to claim 4, characterized in that: A first limiting groove is formed at one end of the first limiting block, and a second limiting groove is formed at one end of the second limiting block. The first limiting block can be snapped into the second limiting groove, and the second limiting block can be snapped into the first limiting groove.
6. The indoor environment monitoring air collection device according to claim 5, characterized in that: The thickness of the first limiting block is set from thin to thick from adjacent to the first limiting groove to away from the first limiting groove, and the thickness of the second limiting block is set from thin to thick from adjacent to the second limiting groove to away from the second limiting groove.
7. The indoor environment monitoring air collection device according to claim 4, characterized in that: Two of the first limit blocks and the second limit blocks are provided, the two first limit blocks are symmetrically installed relative to the center of the mounting seat, and the positions of the two second limit blocks are installed corresponding to the two first limit blocks.
8. The indoor environment monitoring air collection device according to claim 1, characterized in that: It also includes a first mounting plate, which is mounted on one side of the horizontal mounting member. A plug-in block is provided on the first mounting plate. A card slot is provided on the monitor, and the plug-in block can be plugged into the card slot to install the monitor.
9. The indoor environment monitoring air collection device according to claim 1, characterized in that: It also includes a second mounting plate, which is mounted on the side of the horizontal mounting piece away from the monitor, and a mounting groove is provided on the second mounting plate. The sampling unit includes a pretreatment bottle and a gas collecting pipe, and the pretreatment bottle is mounted in the mounting groove. The gas collecting pipe is on the pretreatment bottle, and the pretreatment bottle is filled with a desiccant.
10. The indoor environment monitoring air collection device according to claim 9, characterized in that: A partition is provided in the pretreatment bottle, and the partition is installed in the middle part of the pretreatment bottle. One end of the partition is installed on the inner upper end surface of the pretreatment bottle, and the other end of the partition extends toward the bottom of the pretreatment bottle. The lower end of the partition is not connected to the pretreatment bottle, and the connection parts of the pretreatment bottle with the gas collecting pipe and the monitor are respectively located on both sides of the partition.