An on-line detecting device for water quality index of pollution source

Abstract

The application discloses a kind of pollution source water quality index on-line detection device, it is related to environmental monitoring technical field, including on-line monitoring sensing unit, data acquisition transmission unit and telescopic rod, on-line monitoring sensing unit is by sealing frame, detection frame and multiple sensors installed between the two constitute, telescopic rod is connected with the top of sealing frame, detection frame bottom is equipped with bottom plate, rotating assembly is arranged in sealing frame and detection frame, rotating assembly is used to drive bottom plate to reciprocate along vertical direction and rotate around its own axis.The application is by being provided with rotating assembly with vertical movement and rotation function inside detection unit, so that bottom plate realizes dynamic disturbance in monitoring process, can real-time scatter deposited silt and impurity particles, avoid that sediment forms wrapping layer on the surface of sensor, significantly improve the representativeness and accuracy of detection data.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of environmental monitoring, and in particular to a pollution source water quality index online detection device. BACKGROUND

[0002] The pollution source water quality index online detection device is an important technical means in the field of environmental monitoring, mainly used for real-time dynamic monitoring of industrial wastewater, domestic sewage and various types of polluted water bodies. This kind of device can continuously collect the temperature, pH value, dissolved oxygen, heavy metal concentration, chemical oxygen demand and other key indicators of water body through the integration of multi-parameter sensor array, and can feed back the monitoring results to the monitoring platform in real time through the data transmission module. Its core value lies in realizing the instant perception and early warning of water quality changes, and providing scientific basis for water environment governance. In the scenes of industrial wastewater discharge port, sewage treatment plant, river section, etc., this kind of device can replace the traditional manual sampling detection mode, significantly improve the monitoring frequency and data timeliness, effectively prevent sudden water pollution incidents, and protect the water ecological safety.

[0003] In actual application, due to the complexity of sewage composition, suspended particles, organic matter and heavy metal precipitates will gradually deposit in the area where the water flow speed slows down, forming a sludge layer with different thickness. The traditional detection equipment mostly adopts fixed sensor layout, when the monitoring probe is located in the deep water body, the bottom sediment will wrap the surface of the sensor. This physical attachment not only hinders the full contact of the sensor with the water sample, leading to the deviation of the detection data from the true value, but also may cause the blockage of the equipment channel due to long-term deposition. SUMMARY

[0004] The purpose of the present application is to solve the problem in the prior art that the monitoring probe is blocked by the sediment in the deep water body, and a pollution source water quality index online detection device is provided.

[0005] In order to solve the problems existing in the prior art, the present application adopts the following technical scheme:

[0006] A pollution source water quality index online detection device, comprising an online monitoring sensor unit, a data acquisition and transmission unit and a telescopic rod, the online monitoring sensor unit is composed of a sealing frame, a detection frame and a plurality of sensors installed between the two, the telescopic rod is connected with the top of the sealing frame, the bottom of the detection frame is provided with a bottom plate, a rotating assembly is arranged in the sealing frame and the detection frame, and the rotating assembly is used to drive the bottom plate to reciprocate along the vertical direction and rotate around its own axis.

[0007] Preferably, the bottom plate comprises a circular plate, the upper and lower ends of the circular plate are in conical shape, and a plurality of stirring blocks are symmetrically arranged on the outer wall of the circular plate in the circumferential direction.

[0008] Preferably, the rotating assembly comprises a driving member installed in the inner wall of the sealing frame, a limiting member installed between the sealing frame and the detection frame, and a connecting member connected to the bottom plate, and the driving member is used to drive the connecting member to move upwards along the limiting member.

[0009] Preferably, the driving member comprises a fixed block fixedly installed in the inner wall of the sealing frame, a motor fixedly arranged on the fixed block, a rotating disc fixedly arranged at the output end of the motor, a driving shaft fixedly arranged at one side edge of the rotating disc, and a T-shaped driving rod connected to the driving shaft, and the lower end of the driving rod is connected to the connecting member.

[0010] Preferably, a metal pipe is fixedly arranged at the center of the sealing frame and the detection frame, a fixed column is fixedly arranged at the lower end of the metal pipe, and the fixed column is connected to the connecting member.

[0011] Preferably, the connecting member comprises a connecting frame sleeved on the fixed column, the lower end of the connecting frame is fixedly connected to the center of the bottom plate, connecting rods are fixedly arranged at the two sides of the upper end of the connecting frame, a lifting plate is fixedly arranged at the upper end of the connecting rod, the lower end of the driving rod is fixedly connected to the center of the upper surface of the lifting plate, and a guide member is arranged between the connecting frame and the fixed column.

[0012] Preferably, the guide member comprises a spiral groove arranged on the outer wall of the fixed column, a sliding block is fixedly arranged on the inner side of the upper end of the connecting frame, and the sliding block is located in the spiral groove.

[0013] Preferably, a round rod is inserted into the upper end of the metal pipe, a piston sheet is fixedly arranged at the lower end of the round rod, the piston sheet is attached to the inner wall of the metal pipe, the upper end of the round rod is fixedly connected to the lower surface of the lifting plate, and a water supply member is arranged on the metal pipe.

[0014] Preferably, the water supply member comprises one water inlet pipe and four spray heads, the spray heads are circumferentially arranged at the lower end of the metal pipe, the metal pipe is opposite to the detection end of the sensor, and one-way valves are arranged on the water inlet pipe and the spray heads.

[0015] Preferably, the data acquisition and transmission unit comprises a support, a control box installed on the support, and a photovoltaic panel, the sensor is linearly connected to the control box, a water tank is arranged on the support, and the water tank is connected to the water inlet pipe.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] 1. In the present application, by setting a rotating assembly with vertical movement and rotation function inside the detection unit, the bottom plate realizes dynamic disturbance during monitoring, can scatter the deposited sludge and impurity particles in real time, avoids the formation of a wrapping layer of sediment on the sensor surface, significantly improves the representativeness and accuracy of the detection data; in addition, the composite motion design of the bottom plate enhances the adaptability of the device to different depth water layers, so that it can still maintain a stable working state in water bodies with high concentration of suspended solids or low flow rate, greatly expanding the application scenarios of the water quality online monitoring system.

[0018] 2. In the present application, the vertical movement of the bottom plate separates the bottom plate from the detection frame, so that some impurities accumulated in the detection frame can be discharged, and the rotation of the bottom plate can make the impurities attached to the upper surface of the bottom plate fall off by inertia, avoiding the blockage of the sensor in the detection frame, and improving the detection efficiency of the sensor. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation of the present application. In the drawings:

[0020] Figure 1 is a schematic diagram of the overall structure of the present application;

[0021] Figure 2 is a schematic diagram of the online monitoring sensor unit structure of the present application;

[0022] Figure 3 is a schematic diagram of the cross-sectional structure of the sealing frame and the detection frame of the present application;

[0023] Figure 4 is a schematic diagram of the rotating assembly structure of the present application;

[0024] Figure 5 is a schematic diagram of the limiting piece and connecting piece structure of the present application;

[0025] Figure 6 is a schematic diagram of the internal structure of the metal pipe of the present application;

[0026] Figure 7 is a schematic diagram of the bottom plate structure of the present application;

[0027] Figure 8 is a schematic diagram of the guide structure of the present application.

[0028] No. 1, online monitoring sensing unit; 100, sensor; 200, data acquisition and transmission unit; 300, water tank; 400, telescopic rod; 11, sealing frame; 12, detection frame; 13, bottom plate; 2, round plate; 21, stirring block; 3, rotating assembly; 4, driving piece; 41, fixed block; 42, motor; 43, rotating disc; 44, driving shaft; 45, driving rod; 5, limiting piece; 51, metal pipe; 52, fixed column; 6, connecting piece; 61, lifting plate; 62, connecting rod; 63, connecting frame; 7, spiral groove; 71, sliding block; 8, round rod; 81, piston sheet; 9, nozzle; 91, water inlet pipe. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0030] In the description of the present application, unless otherwise explicitly specified and limited, the terms “mounting”, “connection” and “linking” should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] In the description of the present application, the description of the terms “embodiment”, “one embodiment”, “some embodiments”, “exemplarily” and “one embodiment” means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or embodiment are contained in at least one embodiment or embodiment of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or embodiments in a suitable manner.

[0032] Embodiment: The present embodiment provides a kind of pollution source water quality index on-line detection device, refer to Figures 1-8 , specifically, including online monitoring sensing unit 1, data acquisition and transmission unit 200 and telescopic rod 400, online monitoring sensing unit 1 is by sealing frame 11, detection frame 12 and multiple sensors 100 installed between them, telescopic rod 400 is connected with the top of sealing frame 11, the bottom of detection frame 12 is equipped with bottom plate 13, sealing frame 11 and detection frame 12 are provided with rotating assembly 3, rotating assembly 3 is used to drive bottom plate 13 reciprocatingly moves along vertical direction and rotates around its own axis.

[0033] In this embodiment, when in use, the data acquisition and transmission unit 200 is installed near the pollution source, the online monitoring sensor unit 1 with multiple sensors 100 is put into the water quality of the pollution source, the upper end of the sensor 100 is located in the sealed sealing frame 11, the detection end of the sensor 100 is located in the detection frame 12, the sewage enters from the circular hole of the detection frame 12, and the COD, ammonia nitrogen, pH value and the like in the sewage are monitored through the sensor 100, the monitoring data is transmitted to the data acquisition and transmission unit 200, and real-time online monitoring and early warning are realized; the sealing frame 11 is used for protecting the sensor 100 and the electrified part in the rotating assembly 3, so as to avoid circuit short circuit caused by sewage; the detection frame 12 is used for introducing the sewage to the position of the sensor 100, and the larger impurities in the sewage are isolated through the circular hole on the detection frame 12; the telescopic rod 400 is used for adjusting the position of the online monitoring sensor unit 1 in the sewage, when it is necessary to detect the deep layer of the sewage, the telescopic rod 400 pushes the online monitoring sensor unit 1 downward, at this time, the rotating assembly 3 drives the bottom plate 13 to rotate, the bottom plate 13 scatters the sediment after contacting the sediment in the sewage, the scattered sediment not only avoids the circular hole of the detection frame 12 being blocked, but also enables the sensor 100 to detect the water quality after sedimentation, thereby improving the monitoring accuracy of the sewage; since the movement track of the bottom plate 13 is up and down, the bottom plate 13 rotates when moving up and down, when the bottom plate 13 moves downward, the bottom plate 13 is separated from the detection frame 12, and in addition, the rotation of the bottom plate 13 enables the impurities gathered in the sealing frame 11 to be thrown out of the sealing frame 11, thereby avoiding that too much sediment in the sealing frame 11 affects the detection of the sensor 100.

[0034] In the specific implementation process, as shown in Figure 2 、 Figure 3 and Figure 7 , the bottom plate 13 includes a circular plate 2, the upper and lower ends of the circular plate 2 are in a tapered shape, and a plurality of stirring blocks 21 are symmetrically arranged on the outer wall of the circular plate 2 in the circumferential direction.

[0035] In this embodiment, the upper and lower ends of the circular plate 2 are arranged in a tapered shape, so that the bottom plate 13 can quickly enter the sediment, and the impurities gathered in the sealing frame 11 all slide to the edge position of the sealing frame 11, and the impurities in the sealing frame 11 are quickly discharged when the bottom plate 13 is opened; the stirring blocks 21 at the edge of the circular plate 2 generate vortex flow when rotating, so as to quickly scatter the sediment, the stirring blocks 21 are in an L shape, and when rotating, the stirring blocks 21 generate vortexes below the bottom plate 13, so as to effectively scatter the sediment below the bottom plate 13.

[0036] In the specific implementation process, as shown in Figure 3 、 Figure 4 and Figure 5 , the rotating assembly 3 includes a driving piece 4 installed in the inner wall of the sealing frame 11, a limiting piece 5 installed between the sealing frame 11 and the detection frame 12, and a connecting piece 6 connected with the bottom plate 13, and the driving piece 4 is used for driving the connecting piece 6 to move upward along the limiting piece 5.

[0037] In the embodiment, the driving member 4 is located in the sealing frame 11 to make the whole rotating assembly 3 move up and down, the limiting member 5 is located at the center of the sealing frame 11 and the detection frame 12 to make the bottom plate 13 rotate during the up and down movement, and the connecting member 6 is located in the sealing frame 11 and the detection frame 12 to connect the bottom plate 13 and the driving member 4 together.

[0038] In the specific implementation process, as shown in Figure 3 , Figure 4 , the driving member 4 includes a fixed block 41 fixedly installed on the inner wall of the sealing frame 11, a motor 42 fixedly installed on the fixed block 41, a rotating disc 43 fixedly installed at the output end of the motor 42, a driving shaft 44 fixedly installed at one side edge of the rotating disc 43, and a T-shaped driving rod 45 connected to the driving shaft 44, wherein the lower end of the driving rod 45 is connected to the connecting member 6.

[0039] In the embodiment, the motor 42 is linearly connected to the data acquisition and transmission unit 200, the rotating disc 43 is driven to rotate by the motor 42, the driving shaft 44 at the edge of the rotating disc 43 drives the driving rod 45 to move, the driving shaft 44 is located in a groove at the upper end of the driving rod 45, the length of the groove is greater than the diameter of the rotating disc 43, the connecting member 6 is limited to move up and down, the connecting member 6 is connected to the driving rod 45, the rotating disc 43 drives the driving shaft 44 to rotate, which drives the connecting member 6 to move up and down, and the connecting member 6 drives the bottom plate 13 to move up and down; the motor 42 is arranged in the sealed sealing frame 11 to avoid contact with sewage.

[0040] In the specific implementation process, as shown in Figure 3 , Figure 4 , Figure 5 , a metal pipe 51 is fixedly installed at the center of the sealing frame 11 and the detection frame 12, and a fixed column 52 is fixedly installed at the lower end of the metal pipe 51 and connected to the connecting member 6.

[0041] In the embodiment, the lower end of the metal pipe 51 is located in the detection frame 12, and the upper end is located in the sealing frame 11, the metal pipe 51 is sealed from the sealing frame 11 by sealing glue, the metal pipe 51 is a hollow pipe for loading clean water, and the fixed column 52 is a cylindrical shape located in the detection frame 12 to limit the movement track of the connecting member 6.

[0042] In the specific implementation process, as shown in Figure 3 Figure 5 , Figure 7As shown, the connecting piece 6 comprises a connecting frame 63 sleeved on the fixed column 52, the lower end of the connecting frame 63 is fixedly connected with the center of the bottom plate 13, the upper end of the connecting frame 63 is fixedly provided with connecting rods 62 on both sides, the upper end of the connecting rod 62 is fixedly provided with a lifting plate 61, the lower end of the driving rod 45 is fixedly connected with the center of the upper surface of the lifting plate 61, and a guide piece is arranged between the connecting frame 63 and the fixed column 52.

[0043] In the embodiment, the connecting frame 63 is located in the detection frame 12, the lower end is fixedly connected with the center of the bottom plate 13, and the upper end is sleeved on the fixed column 52, the upper end and the lower end of the fixed column 52 are rotationally connected, as shown in Figure 5 and Figure 8 The uppermost disc is fixedly connected with the connecting rod 62, the upper disc is rotationally connected with the lower disc, the connecting rod 62 penetrates through the bottom of the sealing frame 11 and is connected with the connecting frame 63, and a sealing gasket is arranged between the connecting rod 62 and the sealing frame 11, so that when the connecting rod 62 moves, the sewage in the detection frame 12 is prevented from entering the sealing frame 11, the lifting plate 61 at the upper end of the connecting rod 62 is fixedly connected with the driving rod 45, the driving rod 45 is driven by the driving piece 4 to synchronously move the lifting plate 61, the lifting plate 61 drives the connecting frame 63 below through the connecting rods 62 on both sides to slide along the fixed column 52, the connecting frame 63 at the lower end drives the bottom plate 13 to synchronously move, and since the connecting frame 63 and the fixed column 52 are provided with the guide piece, the connecting frame 63 rotates during the upward and downward movement, and the sediments are dispersed.

[0044] In the specific implementation process, as shown in Figure 5 , Figure 7 and Figure 8 The guide piece comprises a spiral groove 7 formed on the outer wall of the fixed column 52, and a sliding block 71 is fixedly arranged on the inner side of the upper end of the connecting frame 63, and the sliding block 71 is located in the spiral groove 7.

[0045] In the embodiment, the inner side of the disc, which is not connected with the connecting rod 62 at the upper end of the connecting frame 63, is provided with a sliding block 71, the end of the sliding block 71 is in the shape of a ball, and is in close contact with the inner wall of the spiral groove 7, when the driving piece 4 pushes the connecting frame 63 downward through the connecting rod 62, the sliding block 71 moves along the spiral groove 7, the disc drives the part at the lower end of the connecting frame 63 to move in a spiral track, so that the bottom plate 13 below rotates during the vertical movement, the bottom plate 13 is separated from the detection frame 12 when it descends, the impurities accumulated in the detection frame 12 are discharged, the sediments in the sewage are dispersed by the rotation of the bottom plate 13, and the circular hole of the detection frame 12 is prevented from being blocked; the bottom plate 13 is first made to enter the sediments through the telescopic rod 400, and the driving motor 42 drives the bottom plate 13 to rotate to disperse the sediments.

[0046] In the specific implementation process, as shown in Figure 4 , Figure 5 and Figure 6As shown, the upper end of the metal pipe 51 is inserted with a round rod 8, the lower end of the round rod 8 is fixedly provided with a piston sheet 81, the piston sheet 81 is attached to the inner wall of the metal pipe 51, the upper end of the round rod 8 is fixedly connected to the lower surface of the lifting plate 61, and the metal pipe 51 is provided with a water supply part.

[0047] In this embodiment, the piston sheet 81 is added in the metal pipe 51, the piston sheet 81 is connected with a round rod 8, the round rod 8 is connected with the lifting plate 61 in the connecting part 6, when the driving part 4 drives the lifting plate 61 to move vertically, the lifting plate 61 synchronously drives the round rod 8 and the piston sheet 81 to move synchronously, so that the piston sheet 81 performs a suction movement in the metal pipe 51, through the water supply part, the external water source enters the metal pipe 51 and is discharged from the metal pipe 51, the sensor 100 is washed, some impurities attached to the outside of the sensor 100 are removed, and the precision of the sensor 100 is improved.

[0048] In the specific implementation process, as shown in Figure 4 and Figure 5 shown, the water supply part includes a water inlet pipe 91 and four spray heads 9, the spray heads 9 are circumferentially arranged at the lower end of the metal pipe 51, the metal pipe 51 is opposite to the detection end of the sensor 100, and the water inlet pipe 91 and the spray heads 9 are both provided with a one-way valve.

[0049] In this embodiment, the water inlet pipe 91 is located at the upper end of the metal pipe 51, the spray heads 9 are located at the lower end of the metal pipe 51 and are in the detection frame 12, each spray head 9 is opposite to the detection end of the sensor 100, through the suction of the piston sheet 81, the external water source enters the metal pipe 51 from the water inlet pipe 91 and is sprayed from the spray heads 9, the sensor 100 is washed, when the sensor 100 is washed, the online monitoring sensing unit 1 can be separated from the sewage through the telescopic rod 400, the cleaning efficiency is improved, and the manual maintenance cost is reduced.

[0050] In the specific implementation process, as shown in Figure 1 shown, the data acquisition and transmission unit 200 includes a support, a control box mounted on the support, and a photovoltaic panel, the sensor 100 is linearly connected with the control box, the support is provided with a water tank 300, and the water tank 300 is connected with the water inlet pipe 91.

[0051] In this embodiment, the water tank 300 and the water inlet pipe 91 are connected through a hose, because the installation position of the water tank 300 is higher than that of the metal pipe 51, and the metal pipe 51 is continuously pressurized through the piston sheet 81, the water source in the water tank 300 is sucked into the metal pipe 51 through the hose, the water tank 300 needs to be manually added with water source regularly, the support is installed near the sewage, the photovoltaic panel is used for power supply of the entire data acquisition and transmission unit 200 and the online monitoring sensing unit 1, the upper end of the sensor 100 is connected with the control box through a transmission line, the transmission line and the water pipe need to pass through the sealing frame 11, and the contact parts of the transmission line and the water pipe with the sealing frame 11 are sealed through sealing glue.

[0052] The above description is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An online detection device for water quality indicators of pollution sources, comprising an online monitoring sensing unit (1), a data acquisition and transmission unit (200), and a telescopic rod (400), characterized in that: The online monitoring sensing unit (1) consists of a sealing frame (11), a detection frame (12), and multiple sensors (100) installed between the two. The telescopic rod (400) is connected to the top of the sealing frame (11). The bottom of the detection frame (12) is provided with a base plate (13). A rotating component (3) is provided inside the sealing frame (11) and the detection frame (12). The rotating component (3) is used to drive the base plate (13) to move back and forth in the vertical direction and rotate around its own axis. The rotating assembly (3) includes a driving component (4) installed in the inner wall of the sealing frame (11), a limiting component (5) installed between the sealing frame (11) and the detection frame (12), and a connecting component (6) connected to the base plate (13). The driving component (4) is used to drive the connecting component (6) to move along the limiting component (5). The driving component (4) includes a fixed block (41) fixedly installed on the inner wall of the sealing frame (11), a motor (42) fixedly installed on the fixed block (41), a turntable (43) fixedly installed at the output end of the motor (42), a drive shaft (44) fixedly installed on one side edge of the turntable (43), and a T-shaped drive rod (45) connected to the drive shaft (44). The limiting component (5) includes a metal tube (51) fixedly disposed at the center of the sealing frame (11) and the detection frame (12), and a fixing post (52) is fixedly disposed at the lower end of the metal tube (51). The connector (6) includes a connecting frame (63) sleeved on the fixed column (52). The lower end of the connecting frame (63) is fixedly connected to the center of the base plate (13). Connecting rods (62) are fixedly provided on both sides of the upper end of the connecting frame (63). A lifting plate (61) is fixedly provided on the upper end of the connecting rods (62). The lower end of the drive rod (45) is fixedly connected to the center of the upper surface of the lifting plate (61). A guide is provided between the connecting frame (63) and the fixed column (52). The guide includes a spiral groove (7) formed on the outer wall of the fixed column (52), and a slider (71) is fixedly provided on the inner side of the upper end of the connecting frame (63), and the slider (71) is located in the spiral groove (7).

2. The online detection device for water quality indicators of pollution sources according to claim 1, characterized in that: The base plate (13) includes a circular plate (2), both the upper and lower ends of which are conical in shape, and the outer wall of the circular plate (2) is symmetrically provided with multiple stirring blocks (21) along the circumference.

3. The online detection device for water quality indicators of pollution sources according to claim 2, characterized in that: A round rod (8) is inserted into the upper end of the metal pipe (51), and a piston plate (81) is fixedly provided at the lower end of the round rod (8). The piston plate (81) is in contact with the inner wall of the metal pipe (51). The upper end of the round rod (8) is fixedly connected to the lower surface of the lifting plate (61). A water supply component is provided on the metal pipe (51).

4. The online detection device for water quality indicators of pollution sources according to claim 3, characterized in that: The water supply component includes an inlet pipe (91) and four nozzles (9). The nozzles (9) are arranged circumferentially at the lower end of the metal pipe (51). The metal pipe (51) is directly opposite the detection end of the sensor (100). One-way valves are provided on both the inlet pipe (91) and the nozzles (9).

5. The online detection device for water quality indicators of pollution sources according to claim 4, characterized in that: The data acquisition and transmission unit (200) includes a bracket, a control box mounted on the bracket, and a photovoltaic panel. The sensor (100) is linearly connected to the control box. A water tank (300) is provided on the bracket, and the water tank (300) is connected to the water inlet pipe (91).

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