CN214041315U

CN214041315U - Fixed pollution source VOC on-line monitoring system

Info

Publication number: CN214041315U
Application number: CN202022683391.5U
Authority: CN
Inventors: 罗云; 李彬华; 史承飞; 李扬
Original assignee: Nanjing Jiaze Environmental Consulting Co Ltd
Current assignee: Nanjing Jiaze Environmental Consulting Co Ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-08-24
Anticipated expiration: 2030-11-18

Abstract

The utility model relates to a fixed pollution sources VOC on-line monitoring system relates to environmental monitoring's field, and it includes monitoring mechanism and the supporting mechanism who is used for supporting monitoring mechanism, monitoring mechanism includes the VOC monitor, the supporting mechanism includes the backup pad, the VOC monitor can be dismantled with the connecting plate through the linkage unit and be connected, the linkage unit includes at least three spliced pole and is used for the cover to establish the connecting pipe on the spliced pole, spliced pole one end links to each other with the VOC monitor, and the other end is located the connecting pipe, connecting pipe one end links to each other with the backup pad, and another pot head is established on the spliced pole, threaded connection has first spacing ring on the spliced pole, threaded connection has the second spacing ring on the connecting pipe lateral wall, first spacing ring links to each other with the second spacing ring. This application has when the VOC monitor breaks down, and the operator can pull down the VOC monitor from the backup pad, conveniently repairs the effect or change the VOC monitor.

Description

Fixed pollution source VOC on-line monitoring system

Technical Field

The application relates to the field of environmental monitoring, in particular to a fixed pollution source VOC on-line monitoring system.

Background

At present, the pollution source refers to a pollutant generation source causing environmental pollution, and can be classified into a natural pollution source, an atmospheric pollution source, a human pollution source, an industrial pollution source and the like. VOC is an english abbreviation of volatile organic compounds (volatile organic compounds), and the definition in the environmental sense means an active class of volatile organic compounds, which can cause great harm to human health and environment and usually exist in the atmosphere.

Chinese patent with publication number CN211014198U discloses an atmosphere VOC on-line monitoring equipment, which comprises a VOC monitor, a bearing plate frame, a supporting leg and a supporting frame, wherein the supporting frame fixedly supports the bearing plate frame on the ground, one end of the supporting leg is fixedly connected with the bearing plate frame, and the other end is fixedly connected with the VOC monitor.

In view of the above-mentioned related art, the inventors have considered that there is a drawback that it is difficult to perform replacement or repair when the VOC monitor malfunctions.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect that when a VOC monitoring instrument breaks down, the VOC monitoring instrument is difficult to replace or repair, the application provides an on-line monitoring system for fixed pollution sources VOC.

The application provides a fixed pollution sources VOC on-line monitoring system adopts following technical scheme to obtain:

the utility model provides a fixed pollution sources VOC on-line monitoring system, includes monitoring mechanism and the supporting mechanism who is used for supporting monitoring mechanism, monitoring mechanism includes the VOC monitor, the supporting mechanism includes the backup pad, the VOC monitor can be dismantled with the connecting plate through the linkage unit and be connected, the linkage unit includes at least three spliced pole and is used for the cover to establish the connecting pipe on the spliced pole, spliced pole one end links to each other with the VOC monitor, and the other end is located the connecting pipe, connecting pipe one end links to each other with the backup pad, and another pot head is established on the spliced pole, threaded connection has first spacing ring on the spliced pole, threaded connection has the second spacing ring on the connecting pipe lateral wall, first spacing ring links to each other with the second spacing ring.

Through above-mentioned technical scheme, supporting mechanism supports monitoring mechanism in subaerial, when the VOC monitor goes wrong and needs repair or change, the operator can upwards rotate first spacing ring, and first spacing ring drives the upwards rotation of second spacing ring, and the second spacing ring breaks away from with the connecting pipe, can extract the spliced pole from the connecting pipe in, accomplishes the VOC monitor and for the dismantlement of backup pad, conveniently repairs or changes the VOC monitor. During the installation, the operator inserts the connecting column in the connecting pipe, then rotates first spacing ring downwards, and first spacing ring drives the second spacing ring and rotates downwards, and the installation of VOC monitor can be accomplished to second spacing ring and connecting pipe threaded connection for the VOC monitor is fixed in the backup pad.

Optionally, be equipped with the protection unit that is used for protecting the VOC monitor in the backup pad, the protection unit includes baffle and backup pad, the baffle is located one side that the VOC monitor deviates from the backup pad, the baffle passes through the connecting plate and links to each other with the backup pad, one side that the VOC monitor deviates from the connecting plate is equipped with the switch lid, switch lid one side is articulated with the baffle, one side that the switch lid deviates from the baffle can be dismantled with the backup pad through fixed subassembly and be connected.

Through above-mentioned technical scheme, baffle, connecting plate and switch cover can play the guard action to the VOC monitor, and the life of extension VOC monitor when the operator need pull down the VOC monitor from the backup pad, can pull open the switch cover from the backup pad dismantlement of one side that the switch cover deviates from the baffle, makes things convenient for the operator to dismantle the VOC monitor.

Optionally, the fixing assembly comprises a connecting rod and a fixing rod, the connecting rod is hinged to the supporting plate, the fixing rod is hinged to the switch cover, a fixing groove used for placing the connecting rod is formed in one side, facing the switch cover, of the fixing rod, the connecting rod extends out of the fixing groove, a connecting lug is arranged on the switch cover, a positioning rod penetrates through the connecting lug, and the positioning rod is connected with the fixing rod in a threaded mode.

Through above-mentioned technical scheme, when the operator need open the switch cover, can twist off the locating lever from the dead lever, then with dead lever and connecting rod separation, rotate the connecting rod towards the backup pad again, can open the switch cover. When needing to fix the switch cover, can rotate the connecting rod towards the switch cover for the connecting rod is contradicted with the switch cover, then rotates the dead lever towards the connecting rod, makes the connecting rod contradict with the cell wall of fixed slot, then passes the locating lever the connecting rod and with dead lever threaded connection, thereby accomplish the fixed of switch cover.

Optionally, the protection unit further comprises a breathable net, the breathable net is located on two sides of the VOC monitor, the baffle is provided with a hole for the breathable net to pass through, the connecting plate is provided with a chute, the chute penetrates through one side of the connecting plate, which is far away from the supporting plate, the chute is communicated with the hole, and one side of the breathable net, which faces the connecting plate, slides in the chute.

Through above-mentioned technical scheme, ventilative net can play the guard action in the both sides of VOC monitor to the VOC monitor, and simultaneously, ventilative net permeable air reduces the possibility that influences the air admission VOC monitor in. When ventilative net need be changed after using for a long time, the operator can follow the slide rail roll-off in the trompil with ventilative net, can accomplish the dismantlement of ventilative net, during the installation, the operator slides in ventilative net from the trompil and slides along the slide rail, and it can to contradict with the backup pad until ventilative net towards one side of backup pad.

Optionally, still including the solar panel that is used for supplying power for the VOC monitor, solar panel passes through the fixed column and links to each other with the backup pad, be connected with spacing piece on the fixed column, solar panel is connected with the backing sheet towards one side of fixed column, one side that solar panel was kept away from to the backing sheet is connected with the stationary blade, the stationary blade is worn to establish by the fixed column, the stationary blade is contradicted with spacing piece, the one end threaded connection that the backup pad was kept away from to the fixed column has the fixed block, the fixed block is contradicted with one.

Through above-mentioned technical scheme, when sunshine is better, solar panel changes solar energy into the electric energy and supplies power for the VOC monitor, environmental protection and energy-conservation more. When solar panel need change or repair, the operator can be unscrewed the fixed block from the fixed column, then with the stationary blade with the fixed column separation, can accomplish solar panel's dismantlement, convenient follow-up repair or change. During the installation, wear to establish the stationary blade with the fixed column, conflict with spacing piece until the stationary blade, then screw up the fixed block for the fixed block is contradicted with the stationary blade, can accomplish solar panel's installation.

Optionally, the supporting mechanism includes at least three bracing piece and the storage pipe that is used for placing the bracing piece, storage pipe one end links to each other with the backup pad, and other end threaded connection has the connection lid, the bracing piece can be dismantled with storage pipe through dismantling the unit and be connected, it includes the connecting cylinder to dismantle the unit, the connecting rod is pegged graft in the connecting cylinder.

Through the technical scheme, during the monitoring, in the operator can peg graft the bracing piece into the connecting cylinder, will accomodate pipe and monitoring mechanism through the bracing piece and support subaerial, the back that finishes in the monitoring, the operator can extract the bracing piece from the connecting cylinder, unscrew the joint cover, then accomodate the bracing piece into accomodate intraductally, will connect the cover at last and screw up, can accomplish accomodating of bracing piece, make things convenient for the operator to transport and carry.

Optionally, a plurality of adjusting holes are formed in the connecting cylinder, positioning holes are formed in the supporting rod, the positioning shaft penetrates through the adjusting holes and the positioning holes, and anti-falling blocks are connected to two ends of the positioning shaft in a threaded manner.

Through above-mentioned technical scheme, during the installation, the operator aligns adjustment hole and locating hole, passes adjustment hole and locating hole with the location axle, then screws up the anticreep piece at location axle both ends, can accomplish the fixed of bracing piece and connecting cylinder. If when will adjust monitoring mechanism height, the operator can twist off the anticreep piece, takes out the location axle in from regulation hole and locating hole, aligns locating hole and the regulation hole that corresponds again, then wears to establish regulation hole and locating hole with the location axle simultaneously, screws up the anticreep piece at location axle both ends at last and can accomplish the regulation, can satisfy the not co-altitude demand to monitoring mechanism when monitoring.

Optionally, the monitoring system further comprises an alarm for receiving the VOC monitor signal, a loudspeaker for alarming is arranged on the alarm, a supporting column is connected to the supporting mechanism, and the alarm is connected with the supporting column.

Through above-mentioned technical scheme, when the VOC concentration in the air exceeds standard, the VOC monitor signals, and alarm received signal sends the police dispatch newspaper through loudspeaker to remind the monitor.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of the connecting unit, when the VOC monitor breaks down, an operator can detach the VOC monitor from the supporting plate, so that the VOC monitor can be conveniently repaired or replaced;

2. the VOC monitor can be protected by the arrangement of the protection unit, and the service life of the VOC monitor is prolonged;

3. through the cooperation of connecting cylinder and bracing piece, the operator can adjust monitoring mechanism's height.

Drawings

Fig. 1 is a schematic overall structure diagram of an online monitoring system for fixed pollution sources VOC according to an embodiment of the present application.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is an enlarged view of a portion B in fig. 1.

Fig. 4 is a schematic overall structure diagram of an online monitoring system for fixed pollution sources VOC according to an embodiment of the present application.

Fig. 5 is an enlarged view of a portion C in fig. 4.

Fig. 6 is a schematic structural diagram for showing the connection relationship between the connecting cylinder and the supporting rod according to the embodiment of the present application.

Reference numerals: 1. a solar panel; 2. a monitoring mechanism; 21. a VOC monitor; 3. a support mechanism; 31. a support plate; 32. a support bar; 33. receiving a tube; 34. a connecting cover; 4. a connection unit; 41. connecting columns; 42. a connecting pipe; 43. a first limit ring; 44. a second stop collar; 5. a protection unit; 51. a baffle plate; 511. opening a hole; 52. a connecting plate; 521. a chute; 53. a switch cover; 54. a breathable net; 6. a fixing assembly; 61. a connecting rod; 62. fixing the rod; 63. fixing grooves; 64. connecting lugs; 65. positioning a rod; 7. a detaching unit; 71. a connecting cylinder; 72. an adjustment hole; 73. positioning holes; 74. an anti-drop block; 75. positioning the shaft; 10. fixed columns, 11 and limiting pieces; 12. a support sheet; 13. a fixing sheet; 14. a fixed block; 15. an alarm; 151. a horn; 152. and (4) a support column.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a fixed pollution source VOC on-line monitoring system.

Referring to fig. 1, an online monitoring system for fixed pollution sources VOC includes a monitoring mechanism 2 and a supporting mechanism 3, and the supporting mechanism 3 is used for supporting the monitoring mechanism 2 on the ground. One side that supporting mechanism 3 was kept away from to monitoring mechanism 2 is equipped with solar panel 1, and when sunshine was better, accessible solar panel 1 supplied power for monitoring mechanism 2.

Referring to fig. 1 and 2, monitoring mechanism 2 includes VOC monitor 21, and supporting mechanism 3 includes support plate 31, and support plate 31 level sets up, and support plate 31 passes through connecting element 4 with VOC monitor 21 and can dismantle the connection. The connection unit 4 includes three connection columns 41 and three connection pipes 42, one connection column 41 corresponding to one connection pipe 42. One end of the connecting column 41 is fixedly connected with the bottom of the VOC monitor 21, and the other end is inserted into the connecting tube 42. One end of the connecting tube 42 is fixedly connected with the supporting plate 31, and the other end is sleeved on the connecting column 41. The connecting column 41 is connected with a first limit ring 43 through a thread, the connecting tube 42 is connected with a second limit ring 44 through a thread, and the first limit ring 43 is fixedly connected with the second limit ring 44. The threads on the connecting tube 42 are in the same direction as the threads on the connecting post 41.

Referring to fig. 2, when the VOC monitor 21 breaks down and needs to be repaired or replaced, the operator rotates the first spacing ring 43 upward together with the second spacing ring 44, so that the second spacing ring 44 is separated from the connecting cylinder 71, the connecting cylinder 71 can be separated from the connecting column 41, and the VOC monitor 21 is separated from the support plate 31, thereby facilitating subsequent replacement and repair. During the installation, the operator is pegged graft the spliced pole 41 and is gone into in the connecting pipe 42, then rotates first spacing ring 43 and second spacing ring 44 downwards for second spacing ring 44 and connecting cylinder 71 threaded connection, thereby fixed spliced pole 41 and connecting pipe 42, thereby fix VOC monitor 21 on backup pad 31, accomplish the installation of VOC monitor 21.

Referring to fig. 1 and 3, a protection unit 5 is provided on the support plate 31, and the protection unit 5 is used for protecting the VOC monitor 21 so as to prolong the service life of the VOC monitor 21. The protection unit 5 includes a shutter 51, a support plate 31, and an opening and closing cover 53. Baffle 51 is located the one side that VOC monitor 21 deviates from support plate 31, through connecting plate 52 fixed connection between baffle 51 and the support plate 31, and switch cover 53 is located the one side that VOC monitor 21 deviates from support plate 31, and switch cover 53 deviates from one side of support plate 31 and is articulated with baffle 51, and switch cover 53 and support plate 31 pass through fixed subassembly 6 and connect. The fixing assembly 6 includes a connecting rod 61 and a fixing rod 62. Connecting rod 61 one end is articulated with backup pad 31, and dead lever 62 one end is articulated with switch cover 53, and fixed slot 63 has been seted up towards one side of switch cover 53 to dead lever 62, and fixed slot 63 is used for placing connecting rod 61, and the cell wall and the connecting rod 61 of fixed slot 63 are contradicted. The switch cover 53 is fixedly connected with a connecting lug 64, a positioning rod 65 penetrates through the connecting lug 64, and the positioning rod 65 is in threaded connection with the fixing rod 62.

Referring to fig. 3, when the opening and closing cover 53 needs to be opened, an operator unscrews the positioning rod 65 from the fixing rod 62, so that the positioning rod 65 is separated from the fixing rod 62, then the fixing rod 62 is rotated, the fixing rod 62 is separated from the connecting rod 61, the opening and closing cover 53 can be opened, and the operator can conveniently detach the VOC monitor 21 from the support plate 31. When closing switch cover 53, the operator rotates connecting rod 61 towards switch cover 53, then rotates dead lever 62 towards connecting rod 61, conflicts with connecting rod 61 until the cell wall of fixed slot 63, then passes connecting rod 61 with locating lever 65, is twisting connecting rod 61 into dead lever 62, can accomplish switch cover 53's fixing.

Referring to fig. 4 and 5, the protection unit 5 further includes two air permeable nets 54, one air permeable net 54 is correspondingly located on one side of the VOC monitor 21, and the air permeable net 54 can protect the VOC monitor 21 on the one hand, so as to reduce the possibility that the VOC monitor 21 is damaged by external impurities entering the protection unit 5. On the other hand, the air-permeable mesh 54 is permeable to air so that air can enter the VOC monitor 21 through the air-permeable mesh 54 to be monitored. The baffle 51 is provided with an opening 511 through which the ventilation net 54 passes, the connecting plate 52 is provided with a sliding chute 521, the sliding chute 521 passes through the connecting plate 52 and is communicated with the opening 511, and one side of the ventilation net 54, which is far away from the switch cover 53, slides in the sliding chute 521. When the ventilation net 54 needs to be cleaned or replaced after being used for a long time, an operator can slide the ventilation net 54 upwards along the sliding groove 521 and slide out of the opening 511, and then the ventilation net 54 can be detached. During installation, an operator can slide the ventilation net 54 into the opening 511 and slide downwards along the sliding groove 521 until one side of the ventilation net 54 facing the support plate 31 is abutted against the support plate 31, and then installation can be completed.

Referring to fig. 4, one side fixedly connected with support column 152 that VOC monitor 21 was kept away from to baffle 51, the vertical setting of support column 152, the horizontal fixedly connected with of one end that baffle 51 was kept away from to support column 152 receive VOC monitor 21 signal alarm 15, and the both ends of alarm 15 are equipped with loudspeaker 151. When the VOC concentration in the air exceeds the standard, the VOC monitor 21 sends a signal, and after the alarm 15 receives the signal, an alarm is sent out through the loudspeaker 151 to remind a monitor.

Referring to fig. 4, alarm 15 deviates from one side fixedly connected with fixed column 10 of support column 152, the vertical setting of fixed column 10, the one end that alarm 15 was kept away from to fixed column 10 is equipped with solar panel 1, and solar panel 1 is used for supplying power for VOC monitor 21. Solar panel 1 is equipped with backing sheet 12 towards one side of fixed column 10, and one side fixedly connected with stationary blade 13 of solar panel 1 is kept away from to backing sheet 12, and fixed column 10 passes stationary blade 13, and spacing piece 11 of fixedly connected with on the fixed column 10, stationary blade 13 contradicts with spacing piece 11, and the one end threaded connection that alarm 15 was kept away from to fixed column 10 has fixed block 14, and fixed block 14 contradicts with stationary blade 13.

Referring to fig. 4, solar panel 1 may convert solar energy into electrical energy to power VOC monitor 21 when sunlight is present. When the solar panel 1 breaks down and needs to be repaired or replaced, an operator can unscrew the fixing block 14 from the fixing column 10, lift the fixing block 13 upwards to be separated from the fixing column 10, and then detach the solar panel 1 from the fixing column 10, so that the solar panel 1 can be conveniently replaced or repaired subsequently. During the installation, pass fixed column 10 stationary blade 13 until fixed blade 13 and spacing piece 11 conflict, then twist fixed column 10 on fixed block 14, conflict until fixed block 14 and fixed blade 13, can accomplish the installation.

Referring to fig. 1 and 6, the supporting mechanism 3 includes three supporting rods 32, one side of the supporting plate 31 departing from the VOC monitor 21 is fixedly connected with a storage tube 33, the storage tube 33 is used for storing the supporting rods 32, and one end of the storage tube 33 far away from the supporting plate 31 is connected with a connecting cover 34 through threads. The storage tube 33 is detachably connected to the support rod 32 by the detaching unit 7. The disassembling unit 7 comprises three connecting cylinders 71, one connecting cylinder 71 corresponds to one supporting rod 32, the supporting rod 32 is inserted in the connecting cylinder 71, four adjusting holes 72 are formed in the connecting cylinder 71, the adjusting holes 72 penetrate through the connecting cylinder 71 along the radial direction of the connecting cylinder 71, positioning holes 73 are formed in the supporting rod 32, the positioning holes 73 penetrate through the supporting rod 32 along the radial direction of the supporting rod 32, a positioning shaft 75 penetrates through the positioning holes 73 and the adjusting holes 72 simultaneously, anti-disengaging blocks 74 are connected to the two ends of the positioning shaft 75 through threads, and the anti-disengaging blocks 74 abut against the connecting cylinder 71.

Referring to fig. 6, after the monitoring is completed, the operator can unscrew the anti-drop block 74 from the positioning shaft 75, remove the positioning shaft 75 from the positioning hole 73 and the adjusting hole 72, pull out the support rod 32 from the connecting cylinder 71, and remove the support rod 32 from the connecting cylinder 71. Then unscrew connecting cover 34, put into the containing barrel with bracing piece 32, screw up connecting cover 34 again, can accomodate bracing piece 32 in the containing barrel, make things convenient for operator's transportation or carry. During monitoring, an operator can unscrew the connecting cover 34, take the supporting rod 32 out of the accommodating pipe 33, insert the supporting rod 32 into the connecting cylinder 71, align the adjusting hole 72 with the positioning hole 73, simultaneously penetrate the adjusting hole 72 and the positioning hole 73 through the positioning shaft 75, and then screw on the anti-falling block 74, so that the anti-falling block 74 is abutted against the connecting cylinder 71, and installation can be completed. When the height of the VOC monitor 21 needs to be adjusted, the anti-falling block 74 can be unscrewed, then the positioning shaft 75 is taken off from the connecting cylinder 71, the positioning hole 73 is aligned with the appropriate adjusting hole 72, then the positioning shaft 75 penetrates through the adjusting hole 72 and the positioning hole 73, and finally the anti-falling block 74 is screwed on, so that the adjustment can be completed.

The implementation principle of the fixed pollution source VOC on-line monitoring system in the embodiment of the application is as follows: the VOC monitor 21 detects VOC in the air, and the support bar 32 and the support plate 31 support the VOC monitor 21 on the ground. For dismantling the connection between VOC monitor 21 and backup pad 31, the operator can pull down VOC monitor 21, conveniently overhauls or changes VOC monitor 21. The cooperation of the baffle 51, the switch cover 53, the ventilation net 54 and the switch cover 53 protects the VOC monitor 21. When the VOC in the air exceeds the standard, the alarm 15 gives an alarm through the horn 151. When sunlight exists, the solar panel 1 supplies power to the VOC monitor 21, so that the energy is saved and the environment is protected.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an online monitoring system of fixed pollution sources VOC which characterized in that: comprises a monitoring mechanism (2) and a supporting mechanism (3) used for supporting the monitoring mechanism (2), wherein the monitoring mechanism (2) comprises a VOC monitor (21), the supporting mechanism (3) comprises a supporting plate (31), the VOC monitor (21) is detachably connected with a connecting plate (52) through a connecting unit (4), the connecting unit (4) comprises at least three connecting columns (41) and a connecting pipe (42) used for being sleeved on the connecting columns (41), one end of each connecting column (41) is connected with the VOC monitor (21), the other end of each connecting column is positioned in the connecting pipe (42), one end of each connecting pipe (42) is connected with the supporting plate (31), the other end of each connecting pipe is sleeved on the corresponding connecting column (41), a first limiting ring (43) is connected to the connecting column (41) through threads, and a second limiting ring (44) is connected to the outer side wall of the connecting pipe (42) through threads, the first limit ring (43) is connected with the second limit ring (44).

2. The on-line monitoring system for fixed sources of pollutants VOC of claim 1, wherein: be equipped with protection unit (5) that are used for protecting VOC monitor (21) on backup pad (31), protection unit (5) are including baffle (51) and backup pad (31), baffle (51) are located one side that VOC monitor (21) deviate from backup pad (31), baffle (51) link to each other with backup pad (31) through connecting plate (52), one side that VOC monitor (21) deviate from connecting plate (52) is equipped with switch cover (53), switch cover (53) one side is articulated with baffle (51), one side that switch cover (53) deviate from baffle (51) is connected through fixed subassembly (6) can be dismantled with backup pad (31).

3. The on-line monitoring system for fixed sources of pollutants VOC of claim 2, characterized in that: fixed subassembly (6) include connecting rod (61) and dead lever (62), connecting rod (61) are articulated with backup pad (31), dead lever (62) are articulated with switch cover (53), dead lever (62) are equipped with fixed slot (63) that are used for placing connecting rod (61) towards one side of switch cover (53), connecting rod (61) extend fixed slot (63), be equipped with engaging lug (64) on switch cover (53), it is provided with locating lever (65) to run through on engaging lug (64), locating lever (65) and dead lever (62) threaded connection.

4. The on-line monitoring system for fixed sources of pollutants VOC of claim 2, characterized in that: the protection unit (5) further comprises a ventilation net (54), the ventilation net (54) is located on two sides of the VOC monitor (21), an opening (511) for the ventilation net (54) to penetrate through is formed in the baffle (51), a sliding groove (521) is formed in the connecting plate (52), the sliding groove (521) penetrates through one side, away from the supporting plate (31), of the connecting plate (52), the sliding groove (521) is communicated with the opening (511), and one side, facing the connecting plate (52), of the ventilation net (54) slides in the sliding groove (521).

5. The on-line monitoring system for fixed sources of pollutants VOC of claim 1, wherein: still including being used for solar panel (1) for supplying power for VOC monitor (21), solar panel (1) links to each other with backup pad (31) through fixed column (10), be connected with spacing piece (11) on fixed column (10), solar panel (1) is connected with backing sheet (12) towards one side of fixed column (10), one side that solar panel (1) was kept away from in backing sheet (12) is connected with stationary blade (13), stationary blade (13) are worn to establish in fixed column (10), stationary blade (13) are contradicted with spacing piece (11), the one end threaded connection that backup pad (31) were kept away from in fixed column (10) has fixed block (14), fixed block (14) are contradicted with one side that stationary blade (13) deviate from spacing piece (11).

6. The on-line monitoring system for fixed sources of pollutants VOC of claim 1, wherein: supporting mechanism (3) include at least three bracing piece (32) and be used for placing holding pipe (33) of bracing piece (32), holding pipe (33) one end and linking to each other with backup pad (31), another end threaded connection has connecting cover (34), bracing piece (32) can be dismantled with holding pipe (33) through dismantling unit (7) and be connected, it includes connecting cylinder (71) to dismantle unit (7), bracing piece (32) are pegged graft in connecting cylinder (71).

7. The on-line monitoring system for fixed sources of pollutants VOC of claim 6, wherein: the disassembling unit (7) further comprises a positioning shaft (75), a plurality of adjusting holes (72) are formed in the connecting cylinder (71), positioning holes (73) are formed in the supporting rod (32), the positioning shaft (75) penetrates through the adjusting holes (72) and the positioning holes (73), and anti-falling blocks (74) are connected to two ends of the positioning shaft (75) in a threaded mode.

8. The on-line monitoring system for fixed sources of pollutants VOC of claim 1, wherein: still including alarm (15) that is used for receiving VOC monitor (21) signal, be equipped with loudspeaker (151) that are used for the warning on alarm (15), be connected with support column (152) on supporting mechanism (3), alarm (15) link to each other with support column (152).